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WO2008071809A1 - Améliorations apportées à des stations de purification pour la régénération d'aquifères contaminés par des nitrates et leur procédé de fonctionnement - Google Patents

Améliorations apportées à des stations de purification pour la régénération d'aquifères contaminés par des nitrates et leur procédé de fonctionnement Download PDF

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Publication number
WO2008071809A1
WO2008071809A1 PCT/ES2006/000680 ES2006000680W WO2008071809A1 WO 2008071809 A1 WO2008071809 A1 WO 2008071809A1 ES 2006000680 W ES2006000680 W ES 2006000680W WO 2008071809 A1 WO2008071809 A1 WO 2008071809A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
regeneration
nitrates
contaminated
water treatment
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/ES2006/000680
Other languages
English (en)
Spanish (es)
Inventor
Josep Manel Lahuerta Sabanza
Josep Maria Gonzalez Fuentes
Alfons Lopez Salgueiro
Josep Ramon Santolalla Arbones
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
Application filed by Individual filed Critical Individual
Priority to PCT/ES2006/000680 priority Critical patent/WO2008071809A1/fr
Publication of WO2008071809A1 publication Critical patent/WO2008071809A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
    • B01D65/08—Prevention of membrane fouling or of concentration polarisation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
    • B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
    • B01D65/022—Membrane sterilisation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05C—NITROGENOUS FERTILISERS
    • C05C5/00—Fertilisers containing other nitrates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
    • B01D2321/16—Use of chemical agents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/30—Treatment of water, waste water, or sewage by irradiation
    • C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/008—Mobile apparatus and plants, e.g. mounted on a vehicle
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/05—Conductivity or salinity
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/06—Controlling or monitoring parameters in water treatment pH
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/40—Liquid flow rate
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/42—Liquid level

Definitions

  • the invention relates to a new type of water treatment plant designed for the regeneration of aquifers and their operating procedure with application of certain concepts of general water treatment as a preliminary phase of fine slabs and other methodologies that have not been applied to this.
  • technical sector which allow a perfect adaptation of the plant to the type of water to be purified according to the greater or lesser presence of foreign substances, or to the greater or lesser concentration of the same in said water, extracting mineral and organic loads, accompanied by abundant presence of nitrates that will be managed by formulating fertilizers for subsequent application in nearby arable land.
  • Via 2 is characterized by giving merely punctual responses to critical situations of scarcity, associated with the service, significantly increasing the real cost of the water supplied.
  • the binomial [hemoglobin - nitrated waters] easily leads to the fixation of oxygen during respiration. Especially sensitive population: children and the elderly. - About the digestive system:
  • nitrated waters in the digestive system favors the formation of nitrosamines (especially on protein bases).
  • a non-destructive method of nitrates is applied that leads to the obtaining of a saline concentrate, which has to be managed and treated in a different way; considering the reuse as a basic objective of its management.
  • the volumes of saline concentrate (between 10 and 20% of the total produced water) will present a concentration between 5 and 10 times higher than the concentration of the salts initially present in the water to make it drinkable.
  • it is necessary to carry out a refining of the salt making a mixture of deionized water from the membranes exit with raw water without osmotization, in order to recover those minimum saline content that must be present in the water for mouth consumption.
  • Another purpose of the invention is the reduction of the hardness of the water due to the presence of calcium and magnesium, in order to obtain drinking water of optimum characteristics so that its mineralization is weak, and therefore avoiding the serious problems that the lime deposit causes in the pipes and interior installations in the subscriber's house.
  • Another purpose of the invention is that the water treatment plant object of the invention will be manufactured on a container element or chassis easily transportable in the platform of a truck or in a trailer, with which it will be possible in the first place its rapid construction in an industrial warehouse equipped with all the means and protected from any adverse climatic situation, and in second place it will be able to move with great ease, being implemented almost instantaneous way to its taken to the vicinity of the aquifer.
  • the compact and confined structure of the plant protects it from possible vandalism, thus ensuring the functionality of it.
  • Stage n ° 1 Physical-chemical treatment
  • Stage n ° 2 Pre-treatment 1 of reverse osmosis
  • Stage n ° 3 Pre-treatment 2 of osmosis Reverse
  • Stage n ° 4 Reverse osmosis treatment
  • Stage n ° 5 Final chlorination and sanitization
  • Figure 1 is a flow chart illustrative of the operation of the water treatment plant (10), which includes the different stages.
  • Figure 2 is a schematic plan distribution of a possible water treatment plant (10) mounted in a container (11) of 20 feet, with its main elements written on it.
  • Figure 3 is a schematic layout of another possible water treatment plant (10) mounted in a container (12) of 10 feet, with its main elements written on it.
  • the water treatment plant (10) includes a container element (11-12), 10 or 20 feet in length respectively, which allows it to be moved by a simple truck, loading it as if it were a container, or said container placed on a platform with the conventional means for coupling to the tractor unit of the truck to allow its operation completely autonomous, as can be seen in figures n ° 2 and 3.
  • the water treatment plant (10) is equipped with an auxiliary generator (13) that supplies energy to the elements that drive the water flow, such as pumps
  • the waters to be treated will come from wells, rivers, aquifers, groundwater and similar.
  • the dosage of sodium hypochlorite includes the reservoir (24) and the dosing pumps (27-28), together with an automatic regulation and an injection system (29-30), not shown in the figures.
  • a by-pass (26) is provided so that it does not pass through the filter
  • the water is prepared for the reverse osmosis pre-treatment or to by-pass the membrane system and be added on the osmotized water, trying to get replacement saline in hygienic conditions.
  • stage 3 a a water homogenization process is followed, in which three families of different reagents will be applied:
  • the antifouling tank (37) equipped with a stirrer and metering pumps (38-39) is used, see figure 3, with an automatic control system (40) and a system of injection (41), not shown in the figures.
  • Products with antifouling effect are applied, such as:
  • the water mixture with reducer, acid and anti-fouling agent then passes to the tanks (20) and then to a safety micro-filter (42), see figure 2, equipped with the corresponding by-pass (43). at this point stage n ° 3.
  • the 4th stage in which the liquid passes by the pH meter (52) which regulates the metering pump acid (34) and can be sampled for external control, then passing water a pressure transducer (53) provided with its pressure gauge (54).
  • the function of the transducer (53) is to stop the delivery pump (55) if it runs out of water, then passing through the conductimeter (54), provided before the pump (55) a non-return valve (56) .
  • the impulse pump (55) incorporates a by-pass (57) with automatic and / or manual regulation, depending on the frequency inverter incorporated in the control panel (51).
  • the reverse osmosis membrane (58) Before the water enters the reverse osmosis membrane (58) it passes through the pressure transducer (59) which will regulate and inform the control panel (51) of the reading values.
  • the reverse osmosis membrane (58) there is a reverse phenomenon to normal osmosis, which is obtained by exerting a pressure above the osmotic pressure on the concentrated solution, so that nitrate and contaminant separation occurs in it. Well the water is rejected.
  • the purified water at the outlet of the membrane (58) passes through a conductimeter (59) and flow meter (60), finally passing through the sampling (61), or even a de-dosed water tank (47) equipped with a level game
  • the water goes through a conventional washing and displacement system formed by a tank, a pump, a stirrer, some low pressure connection pipes with the corresponding valves, equipped with the system flowmeters, thermometers, manometers.
  • the electrical control panel (51) controls for all stage 4 to work automatically, for this and as can be seen in figure n ° 3 is directly connected to a pH meter (52) and a flow meter (53) located at the inlet and outlet of the pressure switch and pressure gauge (43-44) respectively.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)

Abstract

L'invention concerne un nouveau type de station de purification conçue pour la régénération d'aquifères et son procédé de fonctionnement par application de concepts déterminés d'épuration générale des eaux en tant qu'étape préalable de dégrillage fin et d'autres méthodologies jusqu'à présent non utilisées dans ce secteur technique, qui permettent une adéquation totale entre la station et le type d'eau à traiter en fonction de la forte ou faible présence de substances étrangères, ou de la forte ou faible concentration desdites substances dans l'eau, par extraction de charges minérales et organiques, avec une présence abondante de nitrates qui seront traités par formulation d'engrais en vue d'une utilisation ultérieure dans des terres cultivables proches.
PCT/ES2006/000680 2006-12-05 2006-12-05 Améliorations apportées à des stations de purification pour la régénération d'aquifères contaminés par des nitrates et leur procédé de fonctionnement Ceased WO2008071809A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/ES2006/000680 WO2008071809A1 (fr) 2006-12-05 2006-12-05 Améliorations apportées à des stations de purification pour la régénération d'aquifères contaminés par des nitrates et leur procédé de fonctionnement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/ES2006/000680 WO2008071809A1 (fr) 2006-12-05 2006-12-05 Améliorations apportées à des stations de purification pour la régénération d'aquifères contaminés par des nitrates et leur procédé de fonctionnement

Publications (1)

Publication Number Publication Date
WO2008071809A1 true WO2008071809A1 (fr) 2008-06-19

Family

ID=39511290

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES2006/000680 Ceased WO2008071809A1 (fr) 2006-12-05 2006-12-05 Améliorations apportées à des stations de purification pour la régénération d'aquifères contaminés par des nitrates et leur procédé de fonctionnement

Country Status (1)

Country Link
WO (1) WO2008071809A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5059317A (en) * 1989-10-02 1991-10-22 Dietrich Marius Transportable apparatus for producing drinking water
FR2740129A1 (fr) * 1995-10-19 1997-04-25 F Tec Indus Procede de pretraitement d'eaux brutes
WO1998035912A1 (fr) * 1997-02-14 1998-08-20 Aw Creative Technologies Ltd. Separation et reutilisation de nitrates dans l'eau
US6113797A (en) * 1996-10-01 2000-09-05 Al-Samadi; Riad A. High water recovery membrane purification process
US20040050793A1 (en) * 2001-09-06 2004-03-18 Masaaki Ando Method of multi-stage reverse osmosis treatment

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5059317A (en) * 1989-10-02 1991-10-22 Dietrich Marius Transportable apparatus for producing drinking water
FR2740129A1 (fr) * 1995-10-19 1997-04-25 F Tec Indus Procede de pretraitement d'eaux brutes
US6113797A (en) * 1996-10-01 2000-09-05 Al-Samadi; Riad A. High water recovery membrane purification process
WO1998035912A1 (fr) * 1997-02-14 1998-08-20 Aw Creative Technologies Ltd. Separation et reutilisation de nitrates dans l'eau
US20040050793A1 (en) * 2001-09-06 2004-03-18 Masaaki Ando Method of multi-stage reverse osmosis treatment

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