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WO2008039711A2 - Procédé et appareil pour le traitement des eaux usées - Google Patents

Procédé et appareil pour le traitement des eaux usées Download PDF

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Publication number
WO2008039711A2
WO2008039711A2 PCT/US2007/079274 US2007079274W WO2008039711A2 WO 2008039711 A2 WO2008039711 A2 WO 2008039711A2 US 2007079274 W US2007079274 W US 2007079274W WO 2008039711 A2 WO2008039711 A2 WO 2008039711A2
Authority
WO
WIPO (PCT)
Prior art keywords
wastewater
removal
agent
media
solid separation
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/US2007/079274
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English (en)
Other versions
WO2008039711A3 (fr
Inventor
William G. Smith
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.)
Individual
Original Assignee
Individual
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
Priority claimed from US11/534,770 external-priority patent/US7452468B2/en
Application filed by Individual filed Critical Individual
Priority to CA 2661942 priority Critical patent/CA2661942C/fr
Publication of WO2008039711A2 publication Critical patent/WO2008039711A2/fr
Publication of WO2008039711A3 publication Critical patent/WO2008039711A3/fr
Priority to IL197659A priority patent/IL197659A/en
Anticipated expiration legal-status Critical
Priority to IL210515A priority patent/IL210515A/en
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
    • C02F3/02—Aerobic processes
    • C02F3/10—Packings; Fillings; Grids
    • C02F3/101—Arranged-type packing, e.g. stacks, arrays
    • 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
    • C02F3/10—Packings; Fillings; Grids
    • 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
    • C02F3/12—Activated sludge processes
    • C02F3/1236—Particular type of activated sludge installations
    • C02F3/1263—Sequencing batch reactors [SBR]
    • 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
    • C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
    • C02F3/348—Biological treatment of water, waste water, or sewage characterised by the microorganisms used characterised by the way or the form in which the microorganisms are added or dosed
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/16—Nitrogen compounds, e.g. ammonia
    • 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 pertains to a method and apparatus for the treatment of wastewaters, more specifically, sanitary wastewaters, with a combination of materials, apparatus and equipment for both improvement of the treatment processes as well as the creation of additional treatment capacity. More particularly, the present invention pertains to a method and apparatus for retrofitting an activated sludge process, either anoxic or oxic with high surface area materials as well as either intermittently or continuously feeding of selected biological and zeolitic material.
  • a particular plant was experiencing wide variations in applied hydraulic and organic loadings due to seasonal/recreational activities, e.g. weekend vs. weekday flows. Superimposed on top of these varying loads was a large educational complex with its related variations in flows due to varying operation schedules as well as wastewater characteristics.
  • the educational complex generated wastewater that was high in ammonia which was transported to the wastewater treatment plant via an 18,000 foot long force main laid in bedrock which acted as a refrigeration unit for 5 months out of the year, assuring wastewater at temperatures in the 4 to 5°C (39.2 to 41.0° F) range.
  • the plant when purchased by a new owner, had to address the compliance issues inherited with the purchase of the facility.
  • the raw waste exhibited ammonia nitrogen levels in the range of 50 to 90+ mg/1 with Chemical Oxygen Demand (COD) levels as high as 1100+ mg/1 as well as temperatures of 4°C. Adjustment of the sequence times for longer aeration and mixing to address the reduction of these values was met with limited success.
  • COD Chemical Oxygen Demand
  • swings in food to organism ratios were incurred with the resulting decrease in the settleablilty of the sludge and subsequent loss of solids during the decant sequence of the plant.
  • the plant also had problems meeting its nitrate and nitrite requirements year round.
  • Zeolites have been successfully employed for improved wastewater treatment plant performance in accordance with the published literature and can provide a stabilizing effect during both long term and short term so fluctuations in sludge settleablilty and bacterial mass in the activated sludge process, especially SBR type of plants, are improved. It provides not only a weighting agent for increasing the sludge settling characteristics but also a platform for bacterial growth which performs a function similar to that of a suspended attached growth system.
  • Biological agents available from Organica Biotech Inc. have improved the performance of activated sludge processes, both aerobic and anoxic for the removal of carbonaceous as well as nitrogenous materials.
  • the materials take on many physical shapes and sizes primarily being constructed of plastic materials which provide a high surface area where biological growth can occur.
  • a number of patents describe methods and devices for using microbes to treat organic wastes in sewers and other similar environments. Several of these patents disclose processes which use containers that can be immersed or submerged directly into the waste-laden environments to be treated. Examples of such patents include U.S. Patent No. 4,670,149 to Francis; U.S. Patent No. 4,810,385 to Hater, et al.; U.S. Patent No. 4,925,564 to Francis; U.S. Patent No.
  • the present invention is a method and apparatus for treatment of wastewater, e.g. sanitary wastewater in an activated sludge process or a sequencing batch reactor (SBR) modification of the activated sludge process.
  • wastewater e.g. sanitary wastewater in an activated sludge process or a sequencing batch reactor (SBR) modification of the activated sludge process.
  • SBR sequencing batch reactor
  • the present invention is a method for improving a wastewater treating process, employing one of activated sludge or a sequencing batch reactor, comprising the steps of: introducing into one or more of the bioreactor tanks of an activated sludge treatment process or a sequencing batch reactor a quantity of synthetic biological growth support media together with a zeolitic material being one of clinoptilolite, mordenite, chabazite or phillipsite, and one or more biological agents to effect one or more of an increased production of extra cellular polysacharide for better liquid solid separation, removal of ammonia - nitrification, denitrification, removal of carbonaceous material, reduce surfactant interference with liquid solid separation, provide a balanced nutrient formulation in the wastewater, phosphate removal and odor removal.
  • the present invention is a method for improving a wastewater treating process, employing one of activated sludge or a sequencing batch reactor, comprising the steps of: introducing into one or more of the bioreactor tanks of an activated sludge treatment process or a sequencing batch reactor a quantity of at least two of the agents selected from the group consisting of synthetic biological growth support media, a zeolitic material being one of clinoptilolite, mordenite, chabazite or phillipsite, and biological agents to effect one or more of an increased production of extra cellular polysacharide for better liquid solid separation, removal of ammonia- nitrification, denitrification, removal of carbonaceous material, reduce surfactant interference with liquid solid separation, provide a balanced nutrient formulation in the wastewater, phosphate removal and odor removal.
  • the present invention is a method for improving a wastewater treating process, employing one of activated sludge or a sequencing batch reactor, comprising the steps of: introducing into one or more of the bioreactor tanks of an activated sludge treatment process or a sequencing batch reactor a quantity of synthetic biological growth support media together with a zeolitic material being one of clinoptilolite, mordenite, chabazite or phillipsite.
  • the present invention is a method for improving a wastewater treating process, employing one of activated sludge or a sequencing batch reactor, comprising the steps of: introducing into one or more of the bioreactor tanks of an activated sludge treatment process or a sequencing batch reactor a quantity of a zeolitic material being one of clinoptilolite, mordenite, chabazite or phillipsite, and one or more biological agents to effect one or more of an increased production of extra cellular polysacharide for better liquid solid separation, removal of ammonia- nitrification, denitrification, removal of carbonaceous material, reduce surfactant interference with liquid solid separation, provide a balanced nutrient formulation in the wastewater, phosphate removal and odor removal.
  • the present invention is a method for improving a wastewater treating process, employing one of activated sludge or a sequencing batch reactor, comprising the steps of: introducing into one or more of the bioreactor tanks of an activated sludge treatment process or a sequencing batch reactor a quantity of synthetic biological growth support media together with one or more biological agents to effect one or more of an increased production of extra cellular polysacharide for better liquid solid separation, removal of ammonia-nitrification, denitrification, removal of carbonaceous material, reduce surfactant interference with liquid solid separation, provide a balanced nutrient formulation in the wastewater, phosphate removal and odor removal.
  • FIG. 1 is a plot of solids retention against time for use of zeolitic material according to the present invention.
  • FIG. 2 is a side elevational view of a containment vessel according to the present invention.
  • FIG. 3 is a front elevational view of the vessel of FIG. 3.
  • FIG. 4 is a top plan view of the device of FIG. 3.
  • FIG. 5 is a fragmentary view of the perforation for the top, bottom and walls of the device of FIG. 3.
  • FIG. 6 is a plot of temperature against time for a sewage treatment facility prior to employing the processes and apparatus of the present invention.
  • FIG. 7 is a plot of temperature against time for a twelve hour period inside an SBR plant on a typical winter day.
  • a two train Sequencing Batch Reactor (SBR) plant with each train having a 50,000 gallon tank was out of compliance due to excessively high concentrations of COD and BOD, ammonia-nitrogen, low conversion of nitrate nitrogen, poor settling, low BOD5 removal and very low temperatures.
  • ReNuGen brand zeolites obtained from Daleco Resources Corporation of West Chester, Pennsylvania, were employed at a dosage of 20 parts per million based on the average daily flow to the plant. It should be noted that the SBR process employs a batch volume, in other words only a certain portion of the tank volume is removed and replaced with each batch. With two (2) trains and two (2) batches each treatment sequence would treat 12,500 gallons per batch (batch volume) for a daily treatment capacity of 50,000 gallons per day.
  • the zeolitic material addition operated as a weighting agent, substrate and structural unit for bacterial growth to occur.
  • BOD5 removal rates for BOD5 for the zeolitic material is equivalent to moving bed reactor material (MBBR) media also referred to as suspended attached growth media with a 1.25% effective surface area for the total amount of zeolitic material that is in the system at a steady state the BOD5 removal could be improved by approximately 6% as shown in the data of Table 1.
  • MBBR moving bed reactor material
  • Vessel 10 has a generally cylindrical body 12 and a top 14 and bottom 16.
  • An extended structural member 18 which can be used to place the vessel in a sewage treatment tank.
  • the structural member 18 can extend past the bottom 16 of the tank 10 in order to place the tank 10 a distance above the floor of the sewage treatment vessel. Additional legs 20 will be provided to balance the tank in a generally vertical position inside of the sewage treatment vessel.
  • the top 14, bottom 16 and body 12 of the vessel 10 are provided with a series of perforations 22 is a pattern such as shown in Fig. 5.
  • the perforations are of a size and are placed in a pattern so that there can be adequate fluid flow through the vessel 10.
  • vessel 10 can be fitted with a pipe 24 which can be fastened to structural number 18 as by a strap, the pipe extending into the vessel 10 and terminating in a diffuser 28 so that air or other oxidizing fluid can be introduced into the vessel 12 to aid in the biological process.
  • Vessel 12 has cover 14 fitted with a lifting device such as handle 30 to permit media to be disposed within the vessel or tank 10.
  • the media may be placed in bags which are inserted into the vessel or may be placed directly into the vessel in an area adapted, e.g. by screens, to contain and maintain in bulk quantities of one or more synthetic growth media, zeolitic compositions and or biological material in contact with the wastewater being treated.
  • Vessel 10 can also be fitted with spargers and/or mixers known in sewage treatment processing for aeration and/or mixing.
  • the SBR reactor tanks were retrofitted with three canisters each holding 0.6 cubic meters of AMB Bio Media media. The canisters were fitted with aeration diffusers that were aerated when the SBR sequence called for aeration.
  • the AMB Bio Media media had a surface area of 800 square meters per cubic meter of media.
  • the 50,000 gallon reactors were retrofitted with 1.8 cubic meters or 63.6 cubic feet of media for an additional installed surface area of 15,500 square feet of surface media (1 ,440 square meters).
  • the 50,000 gallon tanks then had an affective surface area over 1 ,440 + 2,672 square meters for 4,112 square meters of surface area or 44,245 square feet installed.
  • the AMB Bio Media media was sampled for growth of attached bacteria after approximately 45 days and found to have increased the total biomass by approximately 30%. It has been shown that adding surface area to a wastewater biological process will promote increased bacterial growth which allows for an increased biological activity and thus improvements in the process performance. This is valid for aerobic, anoxic and anaerobic processes.
  • canisters according to the invention were installed in a batch activated sludge treatment system containing plastic high surface media (AMB Bio Media media) to which is added on a regular basis bacterial agents obtained from Organica Biotech such as described and claimed in U.S. Patent 5,877,113, 6,057,278 and zeolites obtained from Daleco Resources Inc. such as described and claimed in U.S. Patent 5,387,378.
  • the canisters are equipped with both aeration and mixing equipment.
  • the plot of FIG. 6 shows the temperature profile of the SBR reactor as measured in the tank when samples were obtained. It should be noted that the process used in this facility was out of compliance until modification according to the present invention.
  • the temperature of the wastewater in the SBR reactor is at or below the temperature employed for storage of BOD samples as required by Standard Methods.
  • the facility produced effluent with ammonia nitrogen of 3 mg/L (3 ppm) in the summer or fall and 9 mg/L (9 ppm) in the colder winter months which results are consistent with the standards for the facility.
  • the method and apparatus of the present invention were used to retrofit an out of compliance 50,000 gallon per Sequencing Batch Reactor plant.
  • the plant was configured as a two (2) train, four (4) batches, per day treatment process.
  • the plant was receiving waste from several resort communities, as well as a high school that was serviced by a force main that was over 18,000 feet away.
  • the wastewater from both the resorts and high school employed long force mains, which during the winter caused the incoming wastewater to be at or near freezing temperatures.
  • wide swings in the wastewater composition were incurred especially with respect to the ammonia levels.
  • Table 2 sets forth wastewater composition data typical of the mixture of both wastewaters. It was not uncommon to have the volume of resort wastewater to be less than the volume of the school wastewater during part of the day or week while the conditions were reversed on the weekends and holidays.
  • FIG. 8 is a plot of water temperature against time from data taken from a temperature logger installed in the SBR reactor which logged the water temperature every 5 minutes during a typical winter day. The plot represents 12 hours during which one batch of wastewater was treated. Being a batch treatment process there was fill time as well as react time, settle time, and decant time and idle time. The rise in temperature coincides with the addition of the wastewater to the reactor. In a SBR usually only 20% to 30% total volume is decanted with each batch. [0056] The rising and falling of the temperature in the beginning is due to addition of wastewater while filling the reactor.
  • Table 4 shows the results of the sampling of decanted liquid from a number of typical batches of treated wastewater prior to employing the method and apparatus of the present invention.
  • Table 4 SBR Batch Effluent Without the Treatment Process Improvements
  • the parameter values are lower due to the raw wastewater being diluted by 70% to 80% by the liquid left in the reactor after the decanted liquid is removed.
  • the bottom row is the average values for the data.
  • the bacterial culture is supplied, on a daily basis, at a minimum, a starter culture of highly efficient bacteria specifically tailored for the removal of specific pollutants e.g. carbon, ammonia, nitrates, nitrites, and/or phosphorous.
  • the amount of bacteria can be adjusted for the conditions encountered at a specific installation.
  • Table 6 sets forth data taken from the same plant after implementation of the method and apparatus of the present invention. The plant was fitted with canisters containing 0.6 cubic meters of AMB Bio Media media, 1.0 lbs/day of cultivated bacteria and 4.0 lbs/day of zeolitic material.

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

Abstract

Introduction d'une combinaison de milieux de croissance attachés en suspension et de réactifs biologiques dans un processus de traitement des eaux usées, avec ou sans réaction supplémentaire, dans le but d'améliorer et d'augmenter la capacité d'un processus donné. Les milieux et les réactifs biologiques peuvent être disposés à l'intérieur d'un conteneur perforé ou d'un conteneur flexible qui peut être immergé dans un réacteur biologique séquentiel ou dans les réservoirs d'aération et / ou de mélange d'un processus de traitement activé des eaux usées.
PCT/US2007/079274 2006-09-25 2007-09-24 Procédé et appareil pour le traitement des eaux usées Ceased WO2008039711A2 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA 2661942 CA2661942C (fr) 2006-09-25 2007-09-24 Procede et appareil pour le traitement des eaux usees
IL197659A IL197659A (en) 2006-09-25 2009-03-17 A method and facility for effluent treatment
IL210515A IL210515A (en) 2006-09-25 2011-01-06 A method and facility for effluent treatment

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US11/534,770 US7452468B2 (en) 2006-09-25 2006-09-25 Method and apparatus for treatment of wastewater
US11/534,770 2006-09-25
US11/675,113 2007-02-15
US11/675,113 US7507342B2 (en) 2006-09-25 2007-02-15 Method and apparatus for treatment of wastewater

Publications (2)

Publication Number Publication Date
WO2008039711A2 true WO2008039711A2 (fr) 2008-04-03
WO2008039711A3 WO2008039711A3 (fr) 2008-07-10

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011031305A1 (fr) 2009-09-08 2011-03-17 Cambridge Water Technology, Inc. Système et procédé pour améliorer un procédé de traitement d'eaux usées
US8623205B2 (en) 2007-01-09 2014-01-07 Siemens Water Technologies Llc Ballasted anaerobic system
US8840786B2 (en) 2007-01-09 2014-09-23 Evoqua Water Technologies Llc System and method for removing dissolved contaminants, particulate contaminants, and oil contaminants from industrial waste water
CN104118936A (zh) * 2013-04-26 2014-10-29 魏亚中 使活性污泥稳定化的水处理方法
CN105645710A (zh) * 2014-11-19 2016-06-08 辽宁惠源生物环保科技有限公司 一种利用复合微生物制剂进行污泥减量的方法
US9651523B2 (en) 2012-09-26 2017-05-16 Evoqua Water Technologies Llc System for measuring the concentration of magnetic ballast in a slurry
US10023486B2 (en) 2007-01-09 2018-07-17 Evoqua Water Technologies Llc Ballasted sequencing batch reactor system and method for treating wastewater
US10919792B2 (en) 2012-06-11 2021-02-16 Evoqua Water Technologies Llc Treatment using fixed film processes and ballasted settling

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6277280B1 (en) * 1998-07-02 2001-08-21 E Z Flow, L.P. Septic tank effluent filtering apparatus and method
US6697740B2 (en) * 2002-02-19 2004-02-24 William G. Smith Method and system for real-time control of sampling instruments in a batch operation
US7201841B2 (en) * 2003-02-05 2007-04-10 Water Visions International, Inc. Composite materials for fluid treatment

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8623205B2 (en) 2007-01-09 2014-01-07 Siemens Water Technologies Llc Ballasted anaerobic system
US8673142B2 (en) 2007-01-09 2014-03-18 Siemens Water Technologies Llc System for enhancing a wastewater treatment process
US8702987B2 (en) 2007-01-09 2014-04-22 Evoqua Water Technologies Llc Methods for enhancing a wastewater treatment process
US8840786B2 (en) 2007-01-09 2014-09-23 Evoqua Water Technologies Llc System and method for removing dissolved contaminants, particulate contaminants, and oil contaminants from industrial waste water
US8845901B2 (en) 2007-01-09 2014-09-30 Evoqua Water Technologies Llc Ballasted anaerobic method for treating wastewater
US10023486B2 (en) 2007-01-09 2018-07-17 Evoqua Water Technologies Llc Ballasted sequencing batch reactor system and method for treating wastewater
WO2011031305A1 (fr) 2009-09-08 2011-03-17 Cambridge Water Technology, Inc. Système et procédé pour améliorer un procédé de traitement d'eaux usées
EP2475623A4 (fr) * 2009-09-08 2013-05-01 Siemens Industry Inc Système et procédé pour améliorer un procédé de traitement d'eaux usées
US10919792B2 (en) 2012-06-11 2021-02-16 Evoqua Water Technologies Llc Treatment using fixed film processes and ballasted settling
US9651523B2 (en) 2012-09-26 2017-05-16 Evoqua Water Technologies Llc System for measuring the concentration of magnetic ballast in a slurry
CN104118936A (zh) * 2013-04-26 2014-10-29 魏亚中 使活性污泥稳定化的水处理方法
CN105645710A (zh) * 2014-11-19 2016-06-08 辽宁惠源生物环保科技有限公司 一种利用复合微生物制剂进行污泥减量的方法

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