[go: up one dir, main page]

WO1997047561A1 - Procede biologique d'epuration de residus liquides a haute charge contaminante et/ou haute toxicite, en particulier des purins et de la lie d'olive - Google Patents

Procede biologique d'epuration de residus liquides a haute charge contaminante et/ou haute toxicite, en particulier des purins et de la lie d'olive Download PDF

Info

Publication number
WO1997047561A1
WO1997047561A1 PCT/ES1997/000146 ES9700146W WO9747561A1 WO 1997047561 A1 WO1997047561 A1 WO 1997047561A1 ES 9700146 W ES9700146 W ES 9700146W WO 9747561 A1 WO9747561 A1 WO 9747561A1
Authority
WO
WIPO (PCT)
Prior art keywords
biological
reactor
aerobic
bacteria
liquid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/ES1997/000146
Other languages
English (en)
Spanish (es)
Inventor
Joan Vila Reyes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BIO SPECIFIC SYSTEMS SL
Original Assignee
BIO SPECIFIC SYSTEMS SL
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BIO SPECIFIC SYSTEMS SL filed Critical BIO SPECIFIC SYSTEMS SL
Publication of WO1997047561A1 publication Critical patent/WO1997047561A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/06—Aerobic processes using submerged filters
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/30—Aerobic and anaerobic processes
    • C02F3/302—Nitrification and denitrification treatment
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Definitions

  • the present invention relates to a biological method of purification of liquid residues of high pollutant load and / or high toxicity.
  • the present invention relates to a biological method of purification of the type in which the elimination of contamination of the liquid residue is carried out by metabolic and physical-chemical, aerobic and / or anoxic action of bacteria adapted to the liquid residue. purifying and fixed to a support means for bacteria, and comprising one or more of the following steps:
  • the process of the present invention finds its main application in the purification of pig purines and olives apricots.
  • the quality of the water and the procedure to be used for its purification is usually determined based on the initial and final value of certain parameters, such as the Biological Oxygen Demand (BOD), the Chemical Oxygen Demand (COD), the concentration in phosphorus, in nitrogen - in its nitric, ammoniacal and organic forms -, in chlorides, in certain metals, such as copper, iron or chromium, among others.
  • BOD Biological Oxygen Demand
  • COD Chemical Oxygen Demand
  • concentration in phosphorus in nitrogen - in its nitric, ammoniacal and organic forms -, in chlorides, in certain metals, such as copper, iron or chromium, among others.
  • the values of these parameters are usually expressed in mg / 1 or parts per million (ppm). Parameters such as salt content, measured in units of conductivity or ⁇ Sv / cm, concentration in inhibitory materials, expressed in equitox / m 3 and Ph.
  • the residual liquid, coming from a process is subjected to a first treatment
  • Preliminary physical residue for the removal of coarse and sandy materials and bodies consisting of a roughing and / or a sieving and / or a centrifugation and / or a dewatering and / or a degreasing, among others.
  • the effluent from the previous stage is treated in another preliminary physical process, in which the suspended solids that have not been eliminated in the previous stage are eliminated by sedimentation, flocculation and / or coagulation.
  • the residue is subjected to a physical-chemical treatment for the elimination by precipitation and decantation of the decantable polluting substances, by means of the addition of flocculants and coagulants adapted for the formation of final sludges.
  • the so-called physico-chemical procedures usually have their end at this stage, obtaining a purified final effluent and a sludge containing the contaminants initially present in the wastewater, whose destination is generally its evacuation.
  • the residue as stated, has a high BOD and / or a content in organic materials miners so high that a physical-chemical treatment is insufficient, it must be treated in later stages, in what constitutes a biological purification procedure.
  • the effluent from the previous stage is treated in at least one aerobic biological reactor in which bacteria are inoculated and to which air is provided to acquire aerobic conditions.
  • the residual water can also be treated in an anoxic biological reactor, for the possible denitrification of the nitrogen compounds, and in at least one clarification raft, for the separation of the biomass contained in a biological sludge from the purified final effluent.
  • Biological purification procedures have basically three advantages. First, the degrading action is carried out only by a group of bacteria, which has the ability to grow and multiply using pollutants and self-perpetuating indefinitely. Consequently, the use of flocculants, chelants and thickeners is nil or very reduced, so that these types of procedures have a low cost in additives.
  • energy consumption is low. Indeed, the energy requirements are only caused by the need to keep the spill and the bacterial population in contact (homogenization), maintain a sufficient level of oxygen (aeration) and keep the process monitoring mechanisms in operation, pumping fluids and bacterial retroinoculation.
  • the biological purification procedures provide a purified final water more easily integrated into the natural environment than that resulting from physical-chemical procedures, since in reality they do nothing but imitate nature.
  • a discharge of wastewater, in non-excessive concentration, to a channel or to the land is naturally cleared by the bacteria existing in these media. Pollution occurs when the concentration or volume of discharges exceeds the natural purification capacity of the environment.
  • biological purification technology concentrates, intensifies and optimizes this natural system, adapting it to the concentration of the contaminant.
  • the microbial biomass produced in the purification process is easily reusable.
  • Effluent liquid waste from some industrial or livestock processes such as the raising of pigs or the production of olive oil
  • Effluent liquid waste from the raising of pigs known as purines and those from the pressing of olives, called alpechines, currently constitute two cases of purification not effectively solved and, consequently, two important capital problems which should be given a solution.
  • high pollutant load is used for COD values equal to or greater than 4,000 mg 0 2 / l.
  • the largest volume of wastewater that requires purification is produced by urban concentrations, whose typical pollutant concentration, measured in COD, ranges between 200 and 1,500 mg 0 2 / l, which is a low or medium pollutant load, per the general.
  • Market dynamics establish that the vast majority of wastewater treatment technologies have been developed to treat this type of wastewater, of basically domestic origin.
  • a typical yield of 95% reduction in pollutants is sufficient so that these purified urban wastewater can be discharged into a public channel without problems.
  • the initial contamination parameters of the treated wastewater are much lower than those previously mentioned between 20,000 and 100,000 mg 0 2 / l. COD, not being suitable for the treatment of such wastewater, as noted in usual practice.
  • a biological purification procedure is generically characterized by three component or functional facets, namely: - bacteria (and other microorganisms) that must degrade the organic matter present in the contaminated water;
  • the contact system of the bacteria with the environment there are basically two types of commercially used biological treatment systems, namely A) the activated sludge system, in which the bacteria are kept in suspension in the water and they go grouping forming flocs that are subsequently decanted to realign to the biological reactor or evacuate from the system as biological sludge; Y
  • the activated sludge system Due to the dynamics of the bacteria in suspension in the wastewater, the activated sludge system has great limitations when a large concentration of biomass is needed, which, in turn, is necessary when you want to degrade a wastewater with A high concentration in organic pollution.
  • the current biological purification technology suffers from the inconvenience of the necessary adaptation time of the bacterial culture to the environment in which the waste to be treated in the biological reactors is located, which results in a transitional period several months, obviously undesirable, during which the sewage station cannot operate at full capacity.
  • the present invention provides a biological method for the purification of liquid residues of high pollutant load and / or high toxicity, of novel concept, which is essentially characterized in that it comprises the additional stage of a liquid effluent feedback phase from the outlet of at least one of the aerobic biological reactors as influent inside the aerobic biological reactor itself, to dilute the feed with the stabilized liquid at its outlet, in order to dilute the contaminating component below the maximum concentration admitted by the bacteria.
  • the flow rate of said feedback phase is four to fifteen times greater than the feed rate of the aerobic biological reactor.
  • the adaptation of the bacteria to the liquid residue to be purified is carried out independently and externally to any of the biological reactors used in the process, the bacteria being inoculated to the biological reactors when their Biochemical characteristics are already adapted for the immediate action of biological purification on the liquid waste to be treated.
  • the adaptation time of the bacteria to the environment can be achieved, once inoculated, is zero, consequently eliminating the undesirable transitional period. In this way, the treatment plant can operate at full capacity from the moment it is started up.
  • said support medium for bacteria is completely submerged in at least one of the biological reactors used in the process, leaving a fraction of the population of bacteria suspended in the fluid. of the reactor, in equilibrium with the rest of the bacterial population anchored in the support medium. It has been found that the support form according to the present invention and the consequent balance between the bacteria anchored therein and those that remain in suspension, gives the bacteria a much greater resistance to toxicity than can be achieved currently with the procedures conventional.
  • a second stage of liquid effluent feedback is carried out from the exit of the first aerobic biological reactor as an influent inside an anoxic biological reactor, said aerobic reactor being adapted for the conversion of ammoniacal compounds into nitrates, while the anoxic reactor is adapted for denitrification of said nitrates with the obtaining of nitrogen gas.
  • pig manure highly contaminating and toxic, can be purified up to concentration values in pollutants much lower than the currently authorized maximum and the final purified water is suitable for being discharged into public channels with a high level of integration into the natural environment, which is not possible with conventional biological purification procedures.
  • the effluent liquid of said first aerobic biological reactor is introduced into a biological refining reactor, which operates alternatively under anoxic and aerobic conditions, in which biological sludge from other phases is re-dominated prior to the procedure, to compensate for the lack of organic matter, saving the need to add external organic matter, thanks to the endogenous operation of the refining reactor itself, a clarifier preferably being interposed between said aerobic reactor and said refining reactor.
  • the process of the present invention makes it possible to dispense with the organic additives that current procedures require, which is one of the causes of the high operating costs of the treatment plants Current biologicals.
  • Fig. 1 is an operation principle scheme of an embodiment according to the process of the present invention
  • Fig. 2 is another scheme, similar to that of Fig. 1, but of another embodiment of the process of the invention.
  • the present invention consists of a biological purification procedure applicable for wastewater of high pollutant load, based on the use of bacteria, specifically adapted to the biological reactors that intervene independently and externally to them, with submerged support for bacteria in said biological reactors and with internal recirculation systems or between anoxic-aerobic sections.
  • the biological method of purification of liquid residues 1 of high pollutant load and / or high toxicity of the present invention comprises, in a known manner, a first preliminary physical treatment 3 of the residue in order to remove materials and thick and sandy bodies.
  • This physical treatment Preliminary 3 may typically consist of roughing, sieving, centrifugation, sanding, degreasing, or a combination of these or other physical treatments.
  • a second preliminary physical treatment 4 which consists in the elimination by sedimentation and / or flocculation and / or coagulation of the suspended solids that have not been able to be eliminated in the first preliminary physical treatment 3.
  • One of the phases of the process is a physical-chemical treatment 5 of the residue, with which to obtain the elimination by precipitation and decantation of the decantable contaminant substances, by means of the addition of flocculants and coagulants adapted for the formation of final sludges 6
  • this physical-chemical treatment 5 is carried out as a phase immediately after the preliminary treatments 3, 4, while in the exemplary embodiment of Fig. 2 it is carried out carried out as the penultimate phase of the procedure.
  • phase of the procedure consist of a biological treatment of the effluent residue 7 of the immediate previous stage in an aerobic biological reactor 8, in which the bacteria are inoculated and to which air is provided so that it acquires aerobic conditions, thanks to means known aeration 21.
  • the baths are adapted to the liquid waste to be purified and a part of them are fixed to support means 2, while the other part is suspended in the middle of the biological reactor.
  • the examples shown in the drawings comprise a single aerobic reaction phase, carried out in one or several aerobic biological reactors 8, arranged in series and provided with aerators 21.
  • Another stage is a biological treatment of the effluent residue from the previous immediate stage 9, which is carried out in at least one anoxic biological reactor 10, intended for the possible denitrification of the nitrogenous compounds, arranged upstream of the first aerobic biological reactor 8 (Fig. 2).
  • the procedure also consists in a manner known per se of a final physical treatment of the effluent from the previous immediate stage in at least one clarification raft 20 for the separation of the biomass contained in a biological sludge 11 from the purified final effluent 12 .
  • a recirculation 13 of part of said biological sludge 11 to at least one of said biological reactors 8, 10 completes the phases of an anoxic / aerobic biological clearance of known type.
  • a first innovative feature of the process of the present invention is the fact that the adaptation of the bacteria to the liquid residue to be purified is carried out independently and externally to any of the biological reactors 8, 10 used in the process.
  • the metabolic properties of the bacteria have already been adapted for the immediate action of biological purification on the residual liquid waste to be treated, they are inoculated without more than the biological reactors 8, 10. Thanks to this, the transitional period of acquisition of the The nominal regime of the biological reactors 8, 10, as well as in general that of the global treatment plant, is significantly reduced, if not completely suppressed.
  • the type of culture or family of microbial flora most suitable for the particular waste to be treated is selected and its characteristics are optimized in an external process in which the microorganisms are subjected to a high oxygenation rate and fed with the own liquid residue 7, 9 to be purified by bacteria.
  • the adaptation of the latter is carried out in a reactor (not shown in the drawings), independent of the reactors 8, 10.
  • the period required to obtain an optimized bacterial culture varies between one and three months. From this moment the production of the specific and optimized crop is constant and is used continuously in the operation of the treatment plant in which the process of the invention is applied.
  • the biochemical characteristics of the crop that are obtained externally are: a high oxygen consumption, implying a high rate of oxidation of organic matter; a high exoproteolytic activity, which results in rapid hydrolysis of the protein material, which is a very important component in most of the spills to which this invention is applied; and a high content of cellular exopolysaccharides, which enhance the rapid absorption and flocculation of both colloidal matter and bacteria in suspension of the system.
  • Another essential feature of the process of the present invention is the fact that said support medium 2 for bacterial culture is completely immersed in at least one of the biological reactors 8, 10 used in the process, leaving a fraction of the population of bacteria in suspension in the reactor fluid 8, 10, in equilibrium with the remaining fraction anchored in the support medium 2.
  • solid support 2 preferably of plastic material resistant to the medium of the biological reactors, totally submerged therein
  • the microorganisms colonize the surface of the submerged support 2, being fixed by means of exopolymers (although structures called “pilli” and certain protein adhesins also intervene).
  • the set of microbial biomass that forms on top of a solid is called “biofilm”, “fixed biomass” or “adhered biomass”.
  • submerged solid support 2 in the Biological actor 8, 10 derive mainly from the fact that it is possible to produce more biomass, have greater degradation activity and more resistance to toxic products and that the space requirement is lower than in the same reactor without supports.
  • This greater biomass and activity is due to the fact that the microbial biofilm that forms in the liquid-solid interface contains higher bacterial density and the fixed bacteria are more active than those dispersed in the liquid phase.
  • the mechanisms of ecto-cellular degradation, substrate uptake, retention of enzymes and substrates and transport of substrates, are more effective because the exopolymer weft that constitutes the biofilm acts in the sense of facilitating the interaction between substrates ⁇ cough, ectoenzymes and bacteria.
  • the submerged support 2 has a high surface / volume ratio and a type of surface that facilitates the bacteria to be easily anchored.
  • the submerged support 2 of the present invention and its operating conditions allow to establish a dynamic of renewal of the biofilm bacteria anchored in the support 2 towards the suspension in the liquid (and vice versa), thanks to which the anchored bacteria are they find in balance with the suspended ones, favoring their degrading action notably.
  • the optimization of the active biofilm layer of the present invention - achieved thanks to the aforementioned renewal dynamics - has been shown to be much more important than the optimization of the surface ratio / volume of media, in view of the system's debugging capacity bacterial, recommended by current procedures, whereby the submerged support 2 of the present invention is much more effective than most known complex and therefore expensive supports, which only tend to optimize the surface / volume ratio.
  • Another characteristic and innovative feature of the process of the present invention is that it comprises the additional stage of a feedback phase 15 of the liquid effluent from the outlet 14 of at least one of the aerobic biological reactors 8 as influent inside the own aerobic biological reactor 8, as shown in the drawings.
  • This is intended to dilute the feed 7 of the aerobic reactor 8 with the liquid stabilized at its outlet, thanks to which the contaminating component is diluted below the maximum concentration admitted by the baths, with which they can develop its metabolic action.
  • the flow rate of said feedback phase 15 is four to fifteen times greater than the feed rate 7 of the aerobic biological reactor 8.
  • the invention For denitrification of ammoniacal components existing in very high concentrations in the liquid residue 2, such as pig slurries, the invention comprises the stage of a second feedback 16 of the liquid effluent from the outlet 14 of the first aerobic biological reactor 8 as influent inside said biological reactor anoxic 10.
  • the said aerobic reactor 8 is thus adapted for the conversion of the ammoniacal compounds into nitrates
  • the anoxic reactor 10 is adapted for denitrification of said nitrates with the obtaining of nitrogen gas.
  • the bacteria present in said reactor 10 have all the organic material of the feed 9 to produce the desired denitrification, and therefore the purification, which should be understood which is a significant advantage over known procedures, since it effectively allows the purification of liquid waste with a high content of ammonia contaminants, such as pig purines.
  • Another innovative and characteristic feature of the invention is the inclusion in the process of a stage consisting in the supply of the outgoing effluent from the first aerobic biological reactor 8 to a refining biological reactor 19.
  • the reactor 19 also comprises the submerged support 2, in which the bacteria obtained according to the present invention are inoculated.
  • This biological refining reaction carried out in the reactor 19 can alternatively be carried out under anoxic conditions, to obtain an additional denitrification, or aerobic, for the production of a further degradation of the organic matter or the additional nitrification of the residual ammonium
  • the alternation and duration of aerobic and anoxic sequences is determined based on the desired balance of the output parameters.
  • the refining reactor 19 comprises an air insufflation system 21, which can be identical to that of the reactor aerobic 8.
  • the maintenance of the necessary biomass concentration in the aforementioned refining reactor 19 is carried out by the continuous inoculation of biological active sludge 11 from reactors 8, 10. Thanks to this, the lack of organic matter is compensated, saving the need to add external organic matter, such as methanol or any other easily metabolizable substance, due to the endogenous functioning of the refining reactor 19. This allows considerable savings in nutrients for the bacteria and facilitates the formation of decantable flocs , which should be understood as an important advantage with respect to conventional biological purification procedures.
  • a second clarifier is interposed 22.
  • the forced aeration means 21 of the aerobic 8 and refining reactors 19 allow to keep the biomass not anchored in suspension and circulate the water through of the submerged supports 2, in order to achieve the dynamic renewal between the anchored biomass and the suspended biomass and a good contact of the nutrients of the residual water and the dissolved oxygen with the bacteria.
  • An alpine scrubber station was designed and built, based on the process of the present invention, for a capacity of 4 m 3 / day.
  • the process scheme responds to that shown in Fig. 1.
  • Alpechines arrive at the station in tank trucks or containers and empty and homogenize in a tank (not shown).
  • the process consists of roughing 3 and settling 4, followed by a physical-chemical treatment 5 with lime ((OH) 2 Ca), from which, after neutralization they are fed to an aerobic biological reactor 8.
  • the solids after passing through a thickener 20, are dried in a filter press (not shown) and are evacuated in containers for use as agricultural fertilizer or landfill.
  • the aerobic biological reactor 8 has the submerged support 2 according to the invention and is aerated by air insufflation means 21, also having a recirculation 15 of at least six times its feed flow 7.
  • the clarified residual liquid in 20 is evacuated to the drain (submarine emissary in this case).
  • the decanted biological sludge 11 is realigned to the aerobic biological reactor 8.
  • the extreme difficulty of the biological degradation of the alpechines derives from its content in phenols and polyphenols. Therefore, for the phase of specific adaptation of the bacteria according to the invention, commercial freeze-dried bacteria resistant to phenols were started, which were adapted externally to the plant. Given the toxicity of this residue, these bacteria must be re-harvested (in small quantities) periodically to the reactor 8.
  • Table 1 shows the analytical evolution of the main parameters at the entrance and exit of the procedure.
  • a research purification station was designed and built, also based on the process of the present invention, of industrial size, next to a breeding farm of 950 mothers (and the corresponding piglets), with a purification capacity of 25 - 30 m 3 / day of slurry.
  • the process scheme is the one corresponding to Fig. 2.
  • a first stage consists of a first preliminary physical treatment, specifically a sieve 3.
  • the turbid liquid separates It is mixed with a polyelectrolyte prepared in a tank and fed to a centrifuge 4, where it is subjected to the second preliminary stage of physical separation.
  • the effluent liquid part of the centrifuge 4 is fed to the anoxic biological reactor 10, from where it passes to the aerobic reactor 8, with a recirculation between reactors 8 to 10 four to fifteen times greater than the feed rate of the reactor 10, according to the present invention.
  • Reactors 8, 10 have a submerged support system 2 such as that described in the present invention.
  • the resulting treated liquid Downstream of the aerobic reactor 8, the resulting treated liquid is decanted in clarifier 22, from which biological sludge 11 is recirculated to reactors 8 and 10 in the form of sludge 13 and / or extracted from the system by 6, after dehydration in the centrifuge 4.
  • the effluent from the clarifier 22 is fed to a refining biological reactor 19, which also incorporates the bacterial culture anchored in the submerged support 2 according to the invention with the adapted bacteria as explained.
  • the refining reactor 19 can alternatively operate in aerobic or anoxic mode, depending on the parameter to be eliminated (COD, NH 4 + , N0 3 " ) •
  • a physical-chemical treatment is carried out in tank 5, where phosphorus derivatives are precipitated, the rest of suspension materials, and a part of the residual organic matter.
  • the precipitated solids are they decant in a third clarifier 20, whose effluent was found to be a purified and transparent liquid that could be poured into the river or reused.
  • Table 2 shows the typical analytical data of the main parameters and their evolution in the different phases of the process, obtained with the treatment of purmes in the purifier of Example 2, which applied the principles of the present invention.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
  • Activated Sludge Processes (AREA)
  • Treatment Of Sludge (AREA)

Abstract

La dépuration s'effectue par l'action de bactéries adaptées au résidu extérieurement aux réacteurs qui interviennent dans le procédé et fixées à des moyens de support immergés dans les réacteurs. Le procédé comprend des premier et second traitements physiques préliminaires, un traitement chimiophysique, un traitement dans au moins un réacteur biologique aérobie, un traitement dans au moins un réacteur biologique anoxique disposé en amont du premier réacteur aérobie, un traitement dans au moins une cuve de clarification, au moins une recirculation d'une partie de la boue générée dans les réacteurs biologiques vers au moins l'un de ces derniers, une rétroalimentation depuis au moins l'un des réacteurs biologiques aérobies vers ce même réacteur, une seconde étape de réalimentation depuis la sortie du premier réacteur aérobie vers l'intérieur du réacteur anoxique, et un traitement dans un réacteur d'affinage qui fonctionne alternativement dans des conditions anoxiques et aérobies.
PCT/ES1997/000146 1996-06-12 1997-06-06 Procede biologique d'epuration de residus liquides a haute charge contaminante et/ou haute toxicite, en particulier des purins et de la lie d'olive Ceased WO1997047561A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ESP9601316 1996-06-12
ES9601316A ES2108658B1 (es) 1996-06-12 1996-06-12 Procedimiento biologico de depuracion de residuos liquidos de alta carga contaminante y/o alta toxicidad, en especial purines y alpechines.

Publications (1)

Publication Number Publication Date
WO1997047561A1 true WO1997047561A1 (fr) 1997-12-18

Family

ID=8295138

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES1997/000146 Ceased WO1997047561A1 (fr) 1996-06-12 1997-06-06 Procede biologique d'epuration de residus liquides a haute charge contaminante et/ou haute toxicite, en particulier des purins et de la lie d'olive

Country Status (2)

Country Link
ES (1) ES2108658B1 (fr)
WO (1) WO1997047561A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1041044A1 (fr) * 1999-03-31 2000-10-04 Argus Umweltbiotechnologie GmbH Procédé pour la purification d'eaux usées contenant des phénols
CN103833135A (zh) * 2014-03-07 2014-06-04 浦华环保有限公司 活性污泥污水处理装置及污水处理工艺
CN104058558A (zh) * 2014-07-10 2014-09-24 南京农业大学 一种猪场污水的循环利用方法
CN106630388A (zh) * 2016-11-24 2017-05-10 天津市环境保护科学研究院 一种工业园区污水处理的整体节能方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2151389B1 (es) * 1998-04-08 2001-07-01 Ros Roca Sa Procedimiento biologico de degradacion de residuos liquidos especialmente purines de porcino y/o vacuno.
ES2371612B1 (es) * 2009-07-17 2012-11-21 Depuración Biológica Y Bacteriológica De Aguas Residuales S.L. Instalación para la depuración de purines.

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3928190A (en) * 1972-11-17 1975-12-23 Degremont Method of biological purification of sewage
EP0000006A1 (fr) * 1977-06-06 1978-12-20 Stamicarbon B.V. Procédé pour la nitrification d'eau résiduaire
GB2077712A (en) * 1980-06-13 1981-12-23 Saps Anticorrosion Process for aerobic biotreatment
EP0293521A2 (fr) * 1987-06-04 1988-12-07 GebràœDer Sulzer Aktiengesellschaft Procédé de purification biologique d'eau ou d'eau usée pour éliminer des impuretés organiques azotées
FR2620439A1 (fr) * 1987-09-14 1989-03-17 Sgn Soc Gen Tech Nouvelle Procede et dispositif de traitement par fermentation methanique d'eaux residuaires lipidiques
FR2674844A1 (fr) * 1991-04-03 1992-10-09 Omnium Traitement Valorisa Procede et installation de traitement d'epuration de lisiers d'animaux.
US5156742A (en) * 1992-02-25 1992-10-20 Smith & Loveless, Inc. Liquid treatment method and apparatus
US5288407A (en) * 1992-04-06 1994-02-22 Henderson And Bodwell Denitrification system
WO1995025695A1 (fr) * 1994-03-24 1995-09-28 Thames Water Utilities Limited Ameliorations apportees a des filtres biologiques aeres

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3928190A (en) * 1972-11-17 1975-12-23 Degremont Method of biological purification of sewage
EP0000006A1 (fr) * 1977-06-06 1978-12-20 Stamicarbon B.V. Procédé pour la nitrification d'eau résiduaire
GB2077712A (en) * 1980-06-13 1981-12-23 Saps Anticorrosion Process for aerobic biotreatment
EP0293521A2 (fr) * 1987-06-04 1988-12-07 GebràœDer Sulzer Aktiengesellschaft Procédé de purification biologique d'eau ou d'eau usée pour éliminer des impuretés organiques azotées
FR2620439A1 (fr) * 1987-09-14 1989-03-17 Sgn Soc Gen Tech Nouvelle Procede et dispositif de traitement par fermentation methanique d'eaux residuaires lipidiques
FR2674844A1 (fr) * 1991-04-03 1992-10-09 Omnium Traitement Valorisa Procede et installation de traitement d'epuration de lisiers d'animaux.
US5156742A (en) * 1992-02-25 1992-10-20 Smith & Loveless, Inc. Liquid treatment method and apparatus
US5288407A (en) * 1992-04-06 1994-02-22 Henderson And Bodwell Denitrification system
WO1995025695A1 (fr) * 1994-03-24 1995-09-28 Thames Water Utilities Limited Ameliorations apportees a des filtres biologiques aeres

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1041044A1 (fr) * 1999-03-31 2000-10-04 Argus Umweltbiotechnologie GmbH Procédé pour la purification d'eaux usées contenant des phénols
CN103833135A (zh) * 2014-03-07 2014-06-04 浦华环保有限公司 活性污泥污水处理装置及污水处理工艺
CN103833135B (zh) * 2014-03-07 2016-07-06 浦华环保股份有限公司 活性污泥污水处理装置及污水处理工艺
CN104058558A (zh) * 2014-07-10 2014-09-24 南京农业大学 一种猪场污水的循环利用方法
CN104058558B (zh) * 2014-07-10 2016-04-06 南京农业大学 一种猪场污水的循环利用方法
CN106630388A (zh) * 2016-11-24 2017-05-10 天津市环境保护科学研究院 一种工业园区污水处理的整体节能方法
CN106630388B (zh) * 2016-11-24 2020-05-22 天津市环境保护科学研究院 一种工业园区污水处理的整体节能方法

Also Published As

Publication number Publication date
ES2108658B1 (es) 1998-07-01
ES2108658A1 (es) 1997-12-16

Similar Documents

Publication Publication Date Title
CN103910463B (zh) 一种bc城市污水处理新工艺
JP3729332B2 (ja) アップフロー嫌気反応器を含む廃水処理装置、及び、それを利用した廃水処理方法
CN109761455A (zh) 一种合成及发酵类制药工业污水的处理方法
CN106746175A (zh) 一种餐厨垃圾废水处理方法
CN106430845A (zh) 餐厨垃圾废水处理装置
CN201864644U (zh) 一体化脱氮除磷污水处理池
CN105384302A (zh) 养殖废水的处理系统及其方法
CN106565017A (zh) 一种双循环的脱氮除磷废水处理系统及其方法
CN105174622A (zh) 适于处理高浓度有机废水的系统及其方法
CN105967435A (zh) 一种双循环的脱氮除磷废水处理系统及其工艺
CN217377658U (zh) 一种农业面源污染农田废水处理的集成式设备
RU2048457C1 (ru) Станция глубокой очистки сточных вод
CN105923763B (zh) 一种可渗透硫自养反硝化生物墙强化废水脱氮工艺
CN205035225U (zh) 高浓度氨氮有机废水的处理系统
CN105152330B (zh) 一种用于垃圾渗滤液的处理方法
WO1997047561A1 (fr) Procede biologique d'epuration de residus liquides a haute charge contaminante et/ou haute toxicite, en particulier des purins et de la lie d'olive
KR101489134B1 (ko) 하폐수 고도처리 방법
KR101074255B1 (ko) 활성화 조류를 이용한 하폐수 처리장치
CN111003816B (zh) 一种抑制非丝状菌膨胀的生化尾水生物脱氮方法
CN105152337A (zh) 油田钻井污水的无害化处理工艺和系统
KR100212198B1 (ko) 유기물 및 암모니아성 질소 제거용 메디아 충진형폐수처리 시스템
KR100530555B1 (ko) 소규모의 생물학적 오하수 고도 처리 장치 및 방법
CN210559922U (zh) 一种污水处理系统
KR19980043133A (ko) 산화구형 자연정화 처리방법
CN1296297C (zh) 一种城市污水深度净化处理工艺

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase