WO1997029994A1 - Usine d'epuration d'eaux contaminees - Google Patents

Usine d'epuration d'eaux contaminees Download PDF

Info

Publication number
WO1997029994A1
WO1997029994A1 PCT/DK1997/000063 DK9700063W WO9729994A1 WO 1997029994 A1 WO1997029994 A1 WO 1997029994A1 DK 9700063 W DK9700063 W DK 9700063W WO 9729994 A1 WO9729994 A1 WO 9729994A1
Authority
WO
WIPO (PCT)
Prior art keywords
plant
ion exchange
section
water
duct
Prior art date
Application number
PCT/DK1997/000063
Other languages
Danish (da)
English (en)
Inventor
Povl Kaas
Original Assignee
Aqua System A/S
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 Aqua System A/S filed Critical Aqua System A/S
Priority to AU17190/97A priority Critical patent/AU1719097A/en
Priority to PCT/DK1997/000063 priority patent/WO1997029994A1/fr
Publication of WO1997029994A1 publication Critical patent/WO1997029994A1/fr

Links

Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/04—Filters with filtering elements which move during the filtering operation with filtering bands or the like supported on cylinders which are impervious for filtering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/44—Regenerating the filter material in the filter
    • B01D33/46—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element
    • B01D33/461—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element brushes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/44—Regenerating the filter material in the filter
    • B01D33/46—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element
    • B01D33/463—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/44—Regenerating the filter material in the filter
    • B01D33/48—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
    • B01D33/50—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/58—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/70—Filters with filtering elements which move during the filtering operation having feed or discharge devices
    • B01D33/74—Filters with filtering elements which move during the filtering operation having feed or discharge devices for discharging filtrate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/80—Accessories
    • B01D33/804—Accessories integrally combined with devices for controlling the filtration
    • B01D33/807—Accessories integrally combined with devices for controlling the filtration by level measuring
    • 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
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/027—Nanofiltration
    • 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
    • B01D61/04—Feed pretreatment
    • 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
    • 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
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/38—Preventing rewetting of the filter cake on the filter media
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2311/00—Details relating to membrane separation process operations and control
    • B01D2311/04—Specific process operations in the feed stream; Feed pretreatment
    • 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
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • 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
    • C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
    • 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
    • C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
    • C02F1/56—Macromolecular compounds
    • 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
    • C02F2101/163—Nitrates

Definitions

  • the invention concerns a plant for purification of contamina ⁇ ted water, where solid substances mechanically are removed and particular and/or dissolved substances are removed by precipitation.
  • Purification of sewage from, for example, industries and households will normally take place in plants where the water runs through a number of process steps, which typically can comprise an initial mechanical purification in grates and/or sand traps, a preliminary treatment by precipitation, chemical precipitation or biosorption, a treatment in one or more acti ⁇ ve sludge plants and a finishing treatment by filtration and successive precipitation.
  • process steps typically can comprise an initial mechanical purification in grates and/or sand traps, a preliminary treatment by precipitation, chemical precipitation or biosorption, a treatment in one or more acti ⁇ ve sludge plants and a finishing treatment by filtration and successive precipitation.
  • the object of the invention is to provide a plant of the type mentioned in the opening paragraph, which is cheap to produce and with a modest need for space is capable of, quicker and more efficient than previously known, treating rather large amounts of sewage without simultaneous secondary reactions.
  • the new and unique whereby this is obtained according to the invention, is that the plant comprises a passage duct for the water, a number of endless bandpass filters placed in the duct for successively removal of solid substances and precipitated particular and/or dissolved substances, and one UV-section placed in the duct after the bandpass filters with at least one UV-lamp for photochemical treatment of the water.
  • the first section can thus be adapted to remove the more coar ⁇ se impurities.
  • the second section can particular substan ⁇ ces, which are precipitated with a polymer, be removed.
  • a removal of the remaining particular substan ⁇ ces, which are preticipated with a polymer, and dissolved sub ⁇ stances which are preticipated with chemicals, can take place.
  • the filter sections combi ⁇ ned is capable of purifying the water to such a degree, that the water in the UV-sections only will contain dissolved sub ⁇ stances and/or microparticles. Otherwise, the translucency of the water will be reduced and consequently the light from the UV-lamps will not efficiently be able to penetrate and perform the photochemical processes as presumed.
  • the lamps in the UV-section can advantageously be constructed in such a way that there in the UV-section is used light with wavelengths, which can decompose or convert those substances, which at this step are in the sewage in question.
  • the light from low pressure lamps in the UV-area 150 - 200 nm will thus be able to decompose hydrogen peroxide.
  • the light from low pressure lamps in the UV-area 200 - 280 nm will be able to decompose ozone and reduce bacterias, vira, amoebas and microfungi.
  • Medium pressure lamps in the UV-area 200 - 315 nm will primarily be able to convert nitrite and ammonia substances to nitrate and at the same time contribute to a reduction of bacteria, vira, amoebas and microfungi.
  • the highpressure lamps in the UV-area 200 - 400 nm will partly be able to convert hydrogen peroxide and ozone to OH-radicals, partly be able to decompose the remaining hydrogen peroxide and ozone.
  • the sewage does not contain salts, as e.g. chlorides, it can now, after passing the UV-section, be used for watering of agricultural soil or parks in the cities. If the water, on the other hand, is to be led out into a natural recipient, it is necessary first to remove the contents of nitrate, if any.
  • the nitrate and the salts can be removed in each their ion exchange unit which has been placed in the duct after the UV-section. If both processes is needed, the ion exchange unit for nitrate is placed first.
  • each ion exchange section will use a ion exchange mass, which is placed in an ion exchange area before an endless bandpass filter to keep the ion exchan ⁇ ge mass fixed in the duct and continuously lead a part of the mass up to a regeneration basin with a regeneration mean, which typically is an aqueous solution of sodium chloride.
  • the regenerated ion exchange mass can be recirculated to the ion exchange area by means of an air ejector or similar device.
  • an ozone purification section can be inserted,before the UV-section, in the duct for removing especially organic substances, chemical solvents and colour residues, which might remain in the sewage after the treatment in the previous filtering sections. It is therefore of great importance to the effective function of the UV-secti ⁇ on, that the light from the lamps will not have to penetrate turbid and coloured water.
  • the ozone section can be adapted in the way, which is descri ⁇ bed in the applicant's Danish Patent Application No. 145/96, to which is referred as a reference.
  • An ozone generator produces ozone, which under a high pressure is pumped into a reaction container with water.
  • a supersaturated aqueous solution of ozone is created with an enormous amount of very fine, suspended ozone bubbles, which are driven into the sewage of the section, via a set of nozzles.
  • a second ozonecon- taining current of water is driven into the sewage via a se ⁇ cond sets of nozzles, whereby coarse ozone bubbles are created in the water.
  • the ozone in the fine and the coarse bubbles are decomposing the said impurities, and the reaction products flocculate in collaboration between the two types of bubbles, then the floes are removed by means of a bandpass filter, which is placed in the duct.
  • the plant can be build on the basis of one long duct, which is produced on the spot, where it is used and can be made of e.g. concrete.
  • the individual sections can, however, advantageously be produced as prefabricated elements, which are assembled to a complete plant on the spot, where it is used.
  • the elements can be assembled in a row or placed on top of each other to save space.
  • Fig. 1 schematically shows a first embodiment of a plant ac ⁇ cording to the invention with sections build together in a long row
  • Fig. 2 shows a section after the line 11 - 11 in fig. l
  • Fig. 3 schematically shows a second embodiment of a plant ac ⁇ cording to the invention with sections build on top of each other.
  • Fig. 4 schematically shows an ozone purification section cor ⁇ responding to the plant shown in fig. 1 or 2, and
  • Fig. 5 schematically shows an ion exchange section correspon ⁇ ding to the plant shown in fig. l or 2.
  • the plant in fig. 1 is in full indicated with the reference number l.
  • the plant comprises in the embodiment shown a first filter section 2, a second filter section 3, a third filter section 4, a ozone purification section 5, a UV-section 6, a first ion exchange section 7 and a second ion exchance section 8.
  • the different sections are build together in a long row.
  • the sewage to be purified is led in the direction of the ar ⁇ row through an inlet 9 by means of a pump 11, and the purifi- cated water is led in the direction of the arrow out of the plant via an outlet 10.
  • the whole plant is based on one long duct 12, in which the sewage 14 flows, while it step by step is purified from impu ⁇ rities.
  • the duct is mainly Ushaped.
  • the duct furthermore can have a cover 13 for protection against wind and weather and for let ⁇
  • the said construction according to the invention is unique, because it functions without the many pumps, valves and pipe connections, which it is necessary to use by conventional pu ⁇ rification plants.
  • the investment in such a plant is therefore already for this reason substantially smaller than normal.
  • the first filter section 2's bandpass filter 15 is shown in fig. 21, and as shown it extends from side to side in the duct 12 and from its bottom to some place above the surface.
  • the sewage therefore is for ⁇ ced to pass the filter cloths of the bandpass filters when passing the duct.
  • the bandpass filters will by means of mesh widths, being smaller section by section, remove finer and finer particles from the water.
  • the bandpass filter 15's mesh width thus dependant of the quality of the sewage can be for example approximately between 0,5 and 5 mm.
  • the bandpass filter 16's mesh width can for example be approximately between 60 and 280.
  • a polymer is now used to flocculate fine particles, which then in floes are removed by the bandpass filter 16.
  • the bandpass filter 17's mesh width can for example be approximately between 30 and 120. Chemicals are added to react with dissolved substances, microparticles, bac ⁇ teria and vira in order to create primary particles. Further ⁇ more a polymer is added to flocculate the primary particles, which then in floes are removed by the bandpass filter 17.
  • the floes from the sections 3 and 4 will in the direction of the arrows be taken out of the plant and in the shape of slud ⁇ ge go to sludge treatment by, e.g. pressing and digestion.
  • the ozone is produced by an ozone generator 21 and pumped by a pressure pump 22 under a high pressure into a reaction contai ⁇ ner 23 containing water which, in the case shown, is a part of the sewage of the section, and which with a pump 24 also is pumped into a reaction container 23 under a high pressure.
  • a supersaturated aqueous solution of ozone with an endless number of very small fine bubbles with free ozone is thereby created, and this aqueous solution is driven via a first set of nozzles 25 into the section 4 close to the bottom 12 of the duct, whereby an area around the nozzles are filled with fine bubbles, which are manifested as a white fog in the waste water.
  • a cycle 27 the sewage is led from section 4 and back again via a second set of nozzles 26 by means of a pump 28 with a lower operation pressure than the pressure in the reaction container 23.
  • the cycle 27 is, as shown, connected to the ozo ⁇ ne source 21, and it consequently leads an aqueous solution of ozone in through the nozzles 26, where the ozone as a result of the loss of pressure is released in the sewage in the form of, in this case, rather large bubbles.
  • the ozone in both the finer and the coarse bubbles are for example decomposing organic substances, chemical solutions and colour residues, which might be in the sewage at this stage.
  • the ozone in the fine bubbles will react immediately and effi ⁇ ciently with the impurities due to the joint exceedingly large tangent surface of the fine bubbles with the impurities.
  • the fine bubbles which now each has been provided with a surroun ⁇ ding shell af reaction products, are caught by the rising large bubbles, whereby the reaction products gradually are formed into floes, which by the flowing waste water are led to the cloth of a bandpass filter 18, which takes the floes out of the ozone section.
  • the hydro ⁇ gen peroxide can convert hydrogen sulphides to sulphuric acid.
  • an addition of hydrogen peroxide and/of free ozo ⁇ ne serve to ensure that sufficient oxidations means for the succeeding photochemical process are provided.
  • Light with wavelengths from 150 to 200 nm will thus be capable of decomposing hydrogen peroxide.
  • Light with wavelengths from 200 to 280 nm will be capable of decomposing ozone and reduce of bacteria, vira, amoebas and microfungi.
  • Light with wave ⁇ lengths from 200 to 400 nm will furthermore be capable of con ⁇ vert hydrogen peroxide and ozone to OH-radicals and decompose remaining hydrogen peroxide and ozone, if any.
  • the purified waste water does not contain salts, it is, after the UV-section, ready to be used for watering of, for example crops within the agriculture. If the purified sewage is to be led out to a natural recipient, it must, however, first has to be releaved from nitrates.
  • ion exchange section 7 shown in fig. 1, and, in more detailes,in fig. 5.
  • a bandpass filter 19 is placed, and before this the sewage is filled with ion exchange mass 31.
  • Purified water from the other side of the bandpass filters 19 are via a cycle 32 with a pump 33 led, via a number o nozzles 34, to flow in below the ion exchange mass 31, which thereby will be creating a fluid bed in the sewage.
  • the bandpass filter 19 is stopping the ion exchange mass from being carried away with the flow in t e duct. At the same time the bandpass filter is bringing a par of the ion exchange mass up to a regeneration basin 35 with a aqueous solution of sodium chloride to regenerate the ion exchange mass. At the bottom of the regeneration basin 35 a grating 36 is placed, through which the sodium chloride runs to, after passing the ion exchange mass, be destructed or deposited. An air ejector 37 serves the purpose of via a pipeline 38 to recirculate the regenerated ion exchange mass to the fluid bed area before the bandpass filter 19. During this process the ion exchange mass will at the same time be freed from water with sodium chloride residues.
  • Salts are removed in a succeeding ion exchange section 8 with a bandpass filter 20.
  • the adaption of this section is similar to the construction shown in fig. 5, and will therefore not be described further here.
  • sodium hydroxide instead of sodium chloride for regene ⁇ ration of the ion exchange mass is sodium hydroxide used.
  • the plant shown schematically in fig. 1 is build of a row of prefabricated elements, which have been transported to the spot, where the plant is to be used and then assembled in a row.
  • Each element contains one of the sections 2 - 8 of the plant.
  • These elements can, however, also be placed on top of each other, as shown in fig. 2.
  • the sewage is, by mean of the pump 11, pumped up to the first section 2, which is placed at the top of the plant. From here the sewage runs successively through the other sections under the influence of the gravity force via pipelines 40, which, as shown, extend between two sections placed on top of each other.
  • the plant will furthermore be capable of purifying sewage to a very high quality. To this can be added, that water with a satisfactory quality for many purposes can be discharged wit ⁇ hout necessarily having been exposed to all of the process steps.
  • a particular remarkable quality of the plant is, that even with a very high capacity, it takes up negligible little space.
  • the plant according to the invention is suitable for purifica ⁇ tion of the sewage from households in cities and in rural areas, and from many different kinds of industries, a.o for example chemical factories, drug companies, food companies, industrial painting factories, and textile dyeworks. Opposite to the conventional plants this plant can furthermore operate perfectly even in geographical areas with frequently low tem ⁇ peratures, under which cercumstanees the bacteria cultures in the conventional plants to a greater or smaller degree will stop their activity.
  • the plant is furthermore suitable for working up for example brackish and fresh water to be used as process water within the industry and in foodstuff companies.
  • brackish and fresh water to be used as process water within the industry and in foodstuff companies.
  • cold storage plants desulphurizing plants, green ⁇ house and fish farms.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Hydrology & Water Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Nanotechnology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Physical Water Treatments (AREA)

Abstract

La présente invention concerne une usine (1) destinée à l'épuration des eaux de rejet contaminées, le principe en étant d'éliminer mécaniquement les substances solides et d'éliminer par précipitation les substances particulaires et/ou dissoutes. L'usine est constituée d'un conduit de circulation (12) d'eau épousant sensiblement la forme d'un U. Un certain nombre de filtres passe-bande (15, 16, 17) sans fin disposés dans le conduit servent à éliminer successivement les substances solides et les substances particulaires et/ou dissoutes précipitées. Après les filtres passe-bande, le conduit comporte un épurateur à l'ozone (5), plus particulièrement destiné à l'élimination des substances organiques, et un épurateur aux UV (6) destiné à réaliser, dans la foulée, le traitement photochimique de l'eau. Le conduit comporte ensuite un échangeur d'ions (7) de dénitration ainsi qu'un échangeur d'ions (8) de dessalage. L'eau ainsi épurée présente les qualités d'une eau potable. Il est possible, à différentes fins, de prélever de l'eau d'épuration qui n'a pas subi la totalité du processus. L'épuration se réalise dans l'usine si rapidement que les réactions secondaires n'ont pas le temps de se produire, lesquelles réactions pourraient être de celles qui dégagent du gaz ammoniac inopportun, des composés phosphorés et sulfures d'hydrogène. En outre, l'encombrement au sol de l'usine est remarquablement faible, en l'occurrence, une fraction seulement de l'encombrement d'une usine conventionnelle.
PCT/DK1997/000063 1996-02-12 1997-02-11 Usine d'epuration d'eaux contaminees WO1997029994A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU17190/97A AU1719097A (en) 1996-02-12 1997-02-11 Plant for purification of contaminated water
PCT/DK1997/000063 WO1997029994A1 (fr) 1996-02-12 1997-02-11 Usine d'epuration d'eaux contaminees

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DK0145/96 1996-02-12
DK14596 1996-02-12
PCT/DK1997/000063 WO1997029994A1 (fr) 1996-02-12 1997-02-11 Usine d'epuration d'eaux contaminees

Publications (1)

Publication Number Publication Date
WO1997029994A1 true WO1997029994A1 (fr) 1997-08-21

Family

ID=44583648

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1997/000063 WO1997029994A1 (fr) 1996-02-12 1997-02-11 Usine d'epuration d'eaux contaminees

Country Status (2)

Country Link
AU (1) AU1719097A (fr)
WO (1) WO1997029994A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2321782A1 (es) * 2006-08-09 2009-06-10 Jose Juan Sanmartin Ruano Procedimiento para la obtencion de agua salada esterilizada.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988001606A1 (fr) * 1986-09-03 1988-03-10 Povl Kaas Procede de nettoyage d'eau chloree et appareil permettant de realiser ledit procede
EP0317735A2 (fr) * 1987-11-25 1989-05-31 Katadyn Produkte AG Dispositif pour la désinfection d'eau résiduaire
DE4000082A1 (de) * 1988-07-07 1991-07-04 Sidney Ellner Verfahren und vorrichtung zum desinfizieren von abwasser
WO1992020625A1 (fr) * 1991-05-17 1992-11-26 Murasap Industries Ltd Procede et systeme d'epuration de l'eau
US5259972A (en) * 1990-08-01 1993-11-09 Nippon Rensui Company Apparatus and method for purifying water
WO1994026387A1 (fr) * 1993-05-14 1994-11-24 Salsnes Filter As Appareil de nettoyage de bandes de filtrage sans fin

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988001606A1 (fr) * 1986-09-03 1988-03-10 Povl Kaas Procede de nettoyage d'eau chloree et appareil permettant de realiser ledit procede
EP0317735A2 (fr) * 1987-11-25 1989-05-31 Katadyn Produkte AG Dispositif pour la désinfection d'eau résiduaire
DE4000082A1 (de) * 1988-07-07 1991-07-04 Sidney Ellner Verfahren und vorrichtung zum desinfizieren von abwasser
US5259972A (en) * 1990-08-01 1993-11-09 Nippon Rensui Company Apparatus and method for purifying water
WO1992020625A1 (fr) * 1991-05-17 1992-11-26 Murasap Industries Ltd Procede et systeme d'epuration de l'eau
WO1994026387A1 (fr) * 1993-05-14 1994-11-24 Salsnes Filter As Appareil de nettoyage de bandes de filtrage sans fin

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2321782A1 (es) * 2006-08-09 2009-06-10 Jose Juan Sanmartin Ruano Procedimiento para la obtencion de agua salada esterilizada.

Also Published As

Publication number Publication date
AU1719097A (en) 1997-09-02

Similar Documents

Publication Publication Date Title
US6641721B2 (en) Process and apparatus for treating wastewater
CA2095788A1 (fr) Systeme de regeneration autonome
EP1337478B1 (fr) Processus et appareil permettant de traiter des eaux usees
CN202016921U (zh) 一种车载式净水设备
US20140246388A1 (en) Method for the treatment of water and wastewater
CN213950682U (zh) 一种无加药、无动力反洗的饮用水超滤系统
KR101687571B1 (ko) 정수특성에 맞는 선택적 및 조립식 간이정수장치
RU2624709C1 (ru) Технический резервуар комплекса очистки сточных вод и способ его транспортировки, а также комплекс и способ очистки сточных вод аппаратного типа
US6395181B1 (en) Process and apparatus for treating wastewater
AU2007203398A1 (en) Process and Apparatus for Treating Wastewater
JP2009536577A (ja) 分離処理ユニットを用いたシーケンシャルフィルタ群から排出される排出物からの不純物を除去する方法及び装置
WO1997029994A1 (fr) Usine d'epuration d'eaux contaminees
KR100245775B1 (ko) 다중 병렬식 생물막 여과 오폐수 처리장치
Directo et al. Pilot plant study of physical-chemical treatment
CN210367325U (zh) 一种多级废水处理设备
JP4122957B2 (ja) 沈降性懸濁物含有水の濾過方法及び濾過設備
JPH11347595A (ja) 浄水処理設備およびその汚泥の濃縮方法
CN216191633U (zh) 一种湿法脱酸废水处理系统
CN217173508U (zh) 水处理消毒灭菌净化设备
RU190581U1 (ru) Мобильная станция очистки воды
RU2106897C1 (ru) Способ и устройство для очистки жидкостей
CN219585940U (zh) 地表水回收系统
CN220745615U (zh) 一种渔港油污综合治理系统
CN214115184U (zh) 可提供热网补给水的反渗透浓水回用处理系统
JP2003062410A (ja) 廃水処理装置、乾燥海苔製造装置及び濾過方法

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GE HU IL IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK TJ TM TR TT UA UG US UZ VN AM AZ BY KG KZ MD RU TJ TM

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): KE LS MW SD SZ UG AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG

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
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

NENP Non-entry into the national phase

Ref country code: JP

Ref document number: 97528906

Format of ref document f/p: F

122 Ep: pct application non-entry in european phase