EP2038224A2 - Mobile einheit zur behandlung von rohwasser - Google Patents

Mobile einheit zur behandlung von rohwasser

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Publication number
EP2038224A2
EP2038224A2 EP07788859A EP07788859A EP2038224A2 EP 2038224 A2 EP2038224 A2 EP 2038224A2 EP 07788859 A EP07788859 A EP 07788859A EP 07788859 A EP07788859 A EP 07788859A EP 2038224 A2 EP2038224 A2 EP 2038224A2
Authority
EP
European Patent Office
Prior art keywords
water
module
treated
raw 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.)
Withdrawn
Application number
EP07788859A
Other languages
English (en)
French (fr)
Inventor
Vladimir Grcevic
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
Publication of EP2038224A2 publication Critical patent/EP2038224A2/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/025—Reverse osmosis; Hyperfiltration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/145—Ultrafiltration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/58—Multistep processes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C02F9/20—Portable or detachable small-scale multistage treatment devices, e.g. point of use or laboratory water purification systems
    • 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
    • C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
    • 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
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/18—Transportable devices to obtain potable water
    • 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
    • C02F1/22—Treatment of water, waste water, or sewage by freezing
    • 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
    • C02F1/26—Treatment of water, waste water, or sewage by extraction
    • C02F1/265—Desalination
    • 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
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • 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
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • 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
    • 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
    • C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • 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
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • 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
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic 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
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • 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
    • C02F1/68—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
    • 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
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F2001/007—Processes including a sedimentation step
    • 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
    • C02F2101/006—Radioactive compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/001—Runoff or storm water
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/02—Non-contaminated water, e.g. for industrial water supply
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/06—Contaminated groundwater or leachate
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/08—Seawater, e.g. for desalination
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
    • 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
    • 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
    • C02F2209/11—Turbidity
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/04—Flow arrangements
    • C02F2301/046—Recirculation with an external loop
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/02—Odour removal or prevention of malodour
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00—Use of specific compounds during water treatment
    • C02F2305/06—Nutrients for stimulating the growth of microorganisms
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124—Water desalination
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124—Water desalination
    • Y02A20/131—Reverse-osmosis
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/20—Controlling water pollution; Waste water treatment
    • Y02A20/208—Off-grid powered water treatment

Definitions

  • the present invention relates to a mobile unit for the treatment of raw water and a method for producing drinking water.
  • Mobile units are known to operate autonomously and can be quickly transported and installed in a disaster area and allow the production of drinking water by ultrafiltration from raw water pumped into a borehole, into a river or into a well.
  • document FR 2,797,439 discloses a mobile unit for the production of drinking water by ultrafiltration comprising a transportable container containing suction means suitable for drawing raw water to be treated, a module for ultrafiltration fed raw water and clean to produce drinking water, a tank for storing drinking water and dispensing means fed from the storage tank.
  • This type of mobile unit is mainly used to treat raw water that is chemically potable, but bacteriologically non-potable. However, some areas may be affected by a nuclear, radioactive, biological and / or chemical (CBRN) accident. In such a case, the techniques ultrafiltration systems are not effective in providing water meeting the potability criteria required by IOMS (World Health Organization).
  • the only source of water available may be brackish water or seawater. Again, the ultrafiltration techniques used are ineffective.
  • the known mobile units of the prior art are suitable only for treating a single type of raw water.
  • the WHO guidelines recommend adapting the treatment of raw water according to their characteristics.
  • the conditioning of the treated water is an essential link that makes it possible to see the two previous steps succeed.
  • a conditioning of treated water that does not meet the same quality requirements as those existing for the analysis and treatment phases is likely to annihilate water purification efforts.
  • the invention also aims to provide a mobile unit capable of producing drinking water quality superior to that obtained by the techniques of the prior art and with a high hourly rate.
  • Another object of the invention is to provide a mobile unit capable of ensuring the conditioning and supply of drinking water meeting the potability criteria required by the WHO during the establishment of a hard infrastructure. .
  • the invention also aims to provide a mobile unit of low cost, easy to transport and able to be quickly implemented in the heart of disaster areas difficult to access.
  • the invention also aims to provide a method for producing drinking water of good quality regardless of the characteristics of the raw water to be treated.
  • the solution proposed by the invention is a mobile unit for the treatment of raw water, preferably by a filtration technique, comprising:
  • a means for pumping raw water to be treated connected to a supply circuit, a transportable container arranged with said feed circuit and containing: a system for analyzing the characteristics of the raw water to be treated,
  • a first treatment module for treating surface freshwater or drilling water for treating surface freshwater or drilling water
  • a third treatment module for the treatment of raw water contaminated with nuclear, radiological, biological and / or chemical agents is provided.
  • the first treatment module comprises hollow fiber filtration membranes. This filtration technique effectively ensures the stopping of particles of sizes greater than or equal to that of viruses.
  • a filtration module intended to improve the organoleptic characteristics of the raw water to be treated is arranged downstream of the first treatment module, a means being suitable for directing the raw water to be treated in said filtration module according to the analyzed organoleptic characteristics of said raw water.
  • the second processing module is a reverse osmosis unit.
  • the membranes traversed effectively ensure the desalination of brackish water or seawater.
  • the third treatment module is a double-stage reverse osmosis unit for treating raw water contaminated with NRBC agents.
  • the mobile unit comprises a means suitable for bypassing or bypassing one of the two stages of the reverse osmosis unit according to the nature of the NRBC agents analyzed.
  • a module for re-mineralization and adjustment of the pH of the treated water is placed downstream of the double-stage reverse osmosis unit to return, if necessary, to a compliant drinking water. to vital needs.
  • the mobile unit comprises a means of directing the treated water from the first treatment module towards the second or third treatment module, depending on the analyzed characteristics of the raw water.
  • a clarification module is arranged upstream of the treatment modules, a means being able to direct the raw water to be treated in said clarification module according to the turbidity analyzed.
  • the clarification module comprises:
  • a two-layer sand filtration module is arranged between the calcification module and the treatment modules, a means being capable of directing the raw water to be treated in said filtration module. on two-layer sand in the case of a water treatment with very high turbidity.
  • the mobile unit comprises a cooling system of the treated treated water.
  • the cooling system comprises:
  • a second tank cooperating with a cooling module so as to cool a determined quantity of treated water coming from said first buffer tank
  • a third storage tank for receiving the treated treated water from said second tank and for supplying the conditioning module.
  • the cooling module and / or the conditioning module are arranged in other transportable containers so as to facilitate the delivery and installation 'of the mobile unit in an area disaster difficult to access.
  • an injection module for a chlorinated agent is arranged upstream of the module of conditioning so as to maintain the residual effect of the chlorine in the bags and / or the bottles.
  • the invention also relates to a method using the mobile unit in accordance with the preceding characteristics to produce in a disaster area drinking water meeting the potability criteria required by WHO I 1 from a raw water.
  • This process consists of:
  • surface fresh water or drilling water having an NaCl concentration of less than about 5 g / L is treated by means of hollow fiber filtration membranes.
  • a backwash of the filtration membranes is carried out at the end of the filtration period, in order to maintain a constant filtration quality over time.
  • a brackish water or sea water having an NaCl concentration greater than or equal to about 5 g / L is treated by means of a reverse osmosis unit.
  • raw water contaminated with nuclear, radiological, biological or chemical (NRBC) agents is treated by means of a double-stage reverse osmosis unit.
  • NRBC nuclear, radiological, biological or chemical
  • a brackish water or a seawater having an NaCl concentration greater than or equal to about 5 g / L and / or a raw water contaminated with NRBC agents is pre-treated via hollow fiber filtration membranes.
  • raw water having a turbidity greater than about 150 NTU prior to the treatment step is first clarified.
  • the mobile unit consists of a transportable container 1 for the treatment of raw water, a transportable container 2 for cooling the treated water and transportable container 3 for the packaging of the water. 'potable water.
  • These containers are transportable by road, rail, sea and air.
  • the container 1 for the treatment of raw water and the container 3 for the conditioning of drinking water are 20-foot sea containers.
  • the container 2 for cooling is a 10-foot sea container.
  • Containers 1, 2 and 3 are interconnected by a pneumatic and electrical supply system with quick couplings and by flexible food grade piping connecting at the different interfaces via quick hydraulic connections.
  • all the elements are contained in a single transportable container.
  • the raw water to be treated 4 may come from surface fresh water, drilling, brackish water or seawater (up to 35 g / L of NaCl) which may be contaminated by nuclear or radioactive agents. biological and / or chemical (NRBC).
  • the mobile unit comprises a pumping means 5 intended to bring under pressure, via a feed circuit 6, the raw water in the various treatment modules.
  • a pumping means 5 intended to bring under pressure, via a feed circuit 6, the raw water in the various treatment modules.
  • it is a demountable centrifugal dewatering pump disposed near the source of raw water to be treated and connected to flexible food grade piping.
  • the container 1 is connected to the supply circuit 6 via one or more hydraulic connections type Storck firefighter.
  • the container 1 is conditioned and preferentially divided into two parts separated by a partition:
  • a laboratory room equipped with a system 8 for analyzing the characteristics of the raw water to be treated and possibly comprising an office with supervision of a PLC via a PC, a technical room containing: a first treatment module 9 for the treating a freshwater surface or drilling, ⁇ a second treatment module 10 for the treatment of brackish water or seawater,
  • the following openings and accesses are provided: two side doors on the same side equipped with a window for the entry and exit of the staff in the laboratory room and a double door flaps at the end of the container, technical room side.
  • the analysis and treatment of raw water are not successive stages, but are instead intrinsically linked. There is simultaneity and accurate monitoring during these two phases. Water is analyzed before and after the filtration steps.
  • a sample of raw water is taken upstream of the treatment modules 9, 10 and 11 and sucked to the analysis system 8 via a pipe 81.
  • a second analysis is performed downstream of the treatment modules, a sample of treated water being sucked to the analysis system 8 via a pipe 82.
  • the analysis system 8 includes an equipment for analyzing the organoleptic parameters (color, turbidity, odor, flavor), the physicochemical parameters (pH, temperature, conductivity), the microbiological parameters, the undesirable substances (nitrates, hydrocarbons, ...), toxic substances (arsenic, lead, %), pesticides, NRBC agents.
  • the analysis system 8 is further equipped with an electromagnetic plate flowmeter coupled to an ultrasound probe for determining the amount of NaCl contained in the raw water to be treated.
  • an electromagnetic plate flowmeter coupled to an ultrasound probe for determining the amount of NaCl contained in the raw water to be treated.
  • Other equivalent measuring devices can be envisaged.
  • the analysis system 8 is a portable laboratory in the form of a suitcase that can be adapted to its most integrated form. transportable container 1.
  • a device is provided to guide the flow of said raw water through the treatment modules 9, 10 and 11.
  • this is to a hydraulic circuit connecting the different processing modules and equipped with valves actuated automatically via a controller connected to the analysis system 8. It can also be provided to manually operate the valves.
  • the arrangement of the pipes and the actuation of the valves make it possible to circulate the raw water in one or more successive treatment modules.
  • the peak feed rate of the treatment modules 9, 10 and 11 is about 10 m 3 / h.
  • the production rate varies according to the origin of the water and the turbidity of the water. From fresh surface water or drilling, the average production flow is about 60 m 3 / d of drinking water for turbidity up to about 150 NTU. For the same turbidity values from brackish water or seawater, the average flow rate of drinking water is approximately 40 m 3 / d. Beyond about 150 NTU, additional pre-treatments are put in place to maintain the previous production rates.
  • a clarification pretreatment is provided in order to reduce the content of organic matter and suspended solids.
  • a clarification module 7 is disposed between the pumping means 5 and the processing modules 9, 10 and 11.
  • a means 70 is provided for, prior to the treatment step, directing the raw water into the clarification module 7.
  • it is a three-way valve controlled manually or automatically by via the PLC and arranged on the supply circuit 6.
  • the clarification module comprises:
  • a two-layer sand filtration step is installed between the clarification step and the treatment step.
  • a two-layer sand filtration module 13 is disposed between the clarification module 7 and the treatment modules 9, 10 and 11.
  • a means 130 is provided at the outlet of the clarification module 7 for directing the raw water to be treated in the two-layer sand filtration module 13 when the turbidity analyzed is greater than about 200 NTU.
  • it is a three-way valve controlled manually or automatically via the PLC and arranged on the supply circuit 6.
  • An automatic declogging pre-filter is preferably inserted upstream of the treatment modules 9, 10 and 11 to ensure the elimination of particles larger than 300 ⁇ m.
  • This first module advantageously uses an ultrafiltration technique using hollow fiber membranes 90.
  • These membranes make it possible to eliminate turbidity and suspended solids from the water, as well as to reduce the presence of microorganisms.
  • the chemical characteristics of the raw water are not modified, any dissolved form freely crosses the membranes.
  • the use of these membranes makes it possible to have a 6 log reduction on the total seeds, coliforms and Cryptosporidium, a viral reduction of 1 to 3 log, a turbidity lower than 0.1 NTU and a Fouling index lower than 3.
  • the membranes are made from hollow fibers of polyvinylidene fluoride (PVDF).
  • the nominal cutoff threshold of the membrane is 0.1 microns which achieves a complete elimination of all particles and microorganisms larger than this cutoff threshold.
  • the pressurized water passes through the wall of each fiber and exits through the free end thereof.
  • the duration of the filtration depends on the quality of the raw water: the lower the turbidity of the water, the longer the filtration time. In case of very high turbidity, the filtration time can decrease up to 15 minutes. Filtration accumulates particles and microorganisms outside and on the surface of the hollow fibers and it is necessary to regularly remove this deposit. At the end of the filtration period, therefore, a backwash is advantageously carried out in order to maintain a constant filtration quality over time. In practice, a backwash is performed every two hours.
  • Water from a backwash module 91 is passed under pressure in the opposite direction of filtration, permeate side through a centrifugal pump 92. At the same time air is blown on the concentrate side from de-oiled service air. Simultaneous injection of air and water improves the efficiency of the backwash. A small amount of reagent such as chlorine can be injected at the same time as the backwash water. The chlorine injection allows the oxidation of the organic matter deposited on the surface of the membrane and ensures the disinfection of the permeate side of the filtration module and the pipes. The backwash then continues with water alone and without the addition of reagent. During this phase, the flow rate of the pump 92 is increased.
  • Discharges of these different stages are collected in a specific tank or reprocessed directly by a chemical process or by heating.
  • a filtration module 93 is provided downstream of the first treatment module 9, for improving the organoleptic characteristics of the raw water to be treated (taste, odor, etc.).
  • This module is arranged upstream of the first treatment module 9.
  • the filtration module 93 is a grain activated carbon filter.
  • a three-way valve 94 controlled by the controller and associated with a Line 95 connecting the inlet of the filtration module 93 to the inlet of the first treatment module 9 by-pass said filtration module 93.
  • Brackish water or sea water (having an NaCl concentration greater than or equal to about 5 g / l) is directed to the second treatment module 10. Referring to FIG. 1, the valves 120 and 122 are then closed and the valve 121 is open. The treated water is then stored in the tank 14.
  • a reverse osmosis unit 100 is advantageously used, comprising a membrane capable of stopping the particles of the size of the molecules, or even dissolved inorganic salts. This technique ensures effective desalination of the raw water to be treated.
  • a three-way valve 123 is provided. by the PLC and associated with a pipe 15 connecting the outlet of the first module 9 to the inlet of the second module 10.
  • the feed water of the second module 10 can also be pumped via the tank 14 storing the filtered water by the first module 9.
  • Water contaminated with NRBC agents is directed to the third treatment module 11. Referring to Figure 1, the valves 120 and 121 are then closed and the valve 122 is open. The treated water is then stored in the tank 14.
  • each stage 111 and 112 advantageously comprising three membranes arranged in series capable of stopping the NRBC agents.
  • filtration through a single stage may be sufficient while for a nuclear agent, filtration through both stages is required.
  • a means is provided for bypassing one of the two stages 111 or 112 of the reverse osmosis unit according to the NRBC agent analyzed.
  • a module 115 for lime re-mineralization and for adjusting the pH of the osmosis water is placed downstream of the double-stage reversing stage in order to re-mineralize and de-acidify, if necessary, the water to return to neutral pH in accordance with drinking water requirements.
  • This module is triggered manually or automatically via the PLC connected to the analysis system 8.
  • a three-way valve 116 controlled by the PLC and associated with a pipe 117 connecting the output of the double-stage inverter reverse osmosis the input of the module 115 directs the water to said module.
  • the mobile unit comprises a cooling system 20 of treated water connected to a module 30 for packaging in the form of bags and / or bottles said treated and cooled water.
  • a module 17 for injecting a chlorinated agent is disposed upstream of the conditioning module so as to maintain the residual effect of the chlorine in the bags and / or the bottles.
  • a chlorine dioxide dosing and injection station is advantageously used, the point of injection of which is arranged at the outlet of the storage tank 14.
  • a pumping means 18 makes it possible to draw the treated water contained in the storage tank 14 to inject a portion of it to the cooling system 20 and the other part to a flexible open-air tank 19.
  • the tank 19 can ensure the water requirements of a surgical antenna, from 13 m 3 / d to 33 m 3 / d.
  • the pumping means 18 and the tank 19 are positioned outside the container during the production of drinking water. During the transport phases, this material can be stored in the free space inside one of the containers 1, 2 or 3.
  • a valve 21 makes it possible to circulate a determined quantity of water in the cooling system 20.
  • the latter consists of:
  • the buffer tank 22 has a capacity of 500 L. It is advantageously arranged in the transportable container 3.
  • a second tank 23 cooperating with a cooling module 24 so as to cool a given amount of treated water from the first buffer tank 22.
  • the second tank 23 has a capacity of 500 L. It is advantageously arranged in the transportable container 3.
  • a pump 220 makes it possible to circulate the treated water from the first tank 22 to the second 23.
  • the cooling module 24 is an exchanger capable of cooling 500 L of water in 20 minutes. It is advantageously arranged in the transportable container 2. Via a pump 230, the water circulates in a closed circuit between the second tank 23 and the cooling module 24 until complete cooling of the water.
  • a third storage tank 25 for receiving the treated treated water from the second tank 23 and for supplying the conditioning module 30.
  • the third tank 25 has a capacity of 2 m 3 . It is advantageously arranged in the transportable container 3.
  • the actuation of a valve 240 makes it possible to circulate the water from the second tank 23 to the third tank 25.
  • the cooled water contained in the third tank 25 is then sent via a pump 250 to the conditioning module 30.
  • the conditioning module 30 is preferably a bagger for packaging food products in the form of flexible bags.
  • the bagger is able to produce up to 1200 bags / h.
  • the sachets are in a format of 1, 5 L, are resistant and guarantee a food safety given by the analyzes and the preliminary treatment.
  • a recyclable product is used which can be incinerated without pollution in accordance with the ecological principles and directives in force. Final disinfection by UV lamp is performed.
  • a ramp 31 then makes it possible to bring the bags of drinking water into a storage refrigerator 32 before distribution to the populations.
  • the conditioning module 30 can also be declined in the form of a bottler for storing the treated water in plastic bottles. It is also possible to condition the treated water in the form of ice bars to meet specific local needs.
  • the conditioning module 30 is advantageously arranged in the transportable container 3, but it can be installed in a tent or on a platform.
  • the transportable container 2 comprises an electrogenic group 26 capable of supplying energy to. the mobile unit object of the invention for a completely independent operation as well as an air compressor 27.
EP07788859A 2006-06-12 2007-06-11 Mobile einheit zur behandlung von rohwasser Withdrawn EP2038224A2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0605180A FR2902026A1 (fr) 2006-06-12 2006-06-12 Unite mobile pour le traitement d'une eau brute
PCT/FR2007/000954 WO2007144491A2 (fr) 2006-06-12 2007-06-11 Unite mobile pour le traitement d'une eau brute

Publications (1)

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EP2038224A2 true EP2038224A2 (de) 2009-03-25

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EP07788859A Withdrawn EP2038224A2 (de) 2006-06-12 2007-06-11 Mobile einheit zur behandlung von rohwasser

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US (1) US20100307973A1 (de)
EP (1) EP2038224A2 (de)
JP (1) JP2009539597A (de)
BR (1) BRPI0712874A2 (de)
FR (1) FR2902026A1 (de)
MX (1) MX2008015796A (de)
WO (1) WO2007144491A2 (de)

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Also Published As

Publication number Publication date
JP2009539597A (ja) 2009-11-19
WO2007144491A2 (fr) 2007-12-21
WO2007144491B1 (fr) 2008-05-08
US20100307973A1 (en) 2010-12-09
MX2008015796A (es) 2009-02-05
BRPI0712874A2 (pt) 2012-09-04
FR2902026A1 (fr) 2007-12-14
WO2007144491A3 (fr) 2008-04-10

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