EP1294647A1 - Method and device for purifying and treating waste water in order to obtain drinking water - Google Patents
Method and device for purifying and treating waste water in order to obtain drinking waterInfo
- Publication number
- EP1294647A1 EP1294647A1 EP01978239A EP01978239A EP1294647A1 EP 1294647 A1 EP1294647 A1 EP 1294647A1 EP 01978239 A EP01978239 A EP 01978239A EP 01978239 A EP01978239 A EP 01978239A EP 1294647 A1 EP1294647 A1 EP 1294647A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- filter
- wastewater
- waste water
- water
- treated
- 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- Withdrawn
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
- 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
-
- 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
- C02F1/28—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
- C02F1/44—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
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/06—Aerobic processes using submerged filters
-
- 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 invention relates to a method for cleaning wastewater and treating it into drinking water.
- the invention also relates to a device for carrying out this method.
- Waste water in the context of the invention is used water (dirty water) from households, residential complexes, hotels, housing estates up to 1000 people and small towns. Water is also meant with a dirt composition that is comparable or less.
- the known methods for cleaning wastewater are not suitable for leading drinking water for consumption and recycling into a direct cycle without introducing the water as an intermediate step into a body of water or treating it through a bottom passage.
- the known cleaning methods are not suitable for the treatment of water that is used in a relatively small consumption unit that is not connected to a public water supply network.
- the known methods cannot be used for the water supply of hotels, Residential complexes or small towns are used, which are built and operated in areas with little or no water suitable for drinking water supply.
- the invention has for its object to make hot water available in a manageable consumption unit such as a hotel independently of public water suppliers and to be able to reprocess it for renewed consumption.
- the invention combines for processing and immediate
- nanofiltration ensures that the concentration of water and in particular
- Bacteria and corresponding particles are preferably separated in several filter stages in the second treatment step provided according to the invention.
- Ultrafiltration completely retains all bacteria, viruses or other particles on the filter, which means a so-called sterile filtration.
- Nanofiltration downstream of ultrafiltration is a double safety system. It is also able to completely retain any particles and bacteria that may still be present. Only very small amounts of chemicals are required for the treatment and treatment of the wastewater.
- ultrafiltration is not absolutely necessary. Rather, in many cases it is also possible, according to the invention, to obtain biologically stabilized drinking water without ultrafiltration.
- nanofiltration is cheaper than reverse osmosis. If ultrafiltration is dispensed with, energy costs can be saved significantly. Antiscaling agents and also chlorine can be used for the chemical treatment.
- Antiscaling agent A few milliliters of the antiscaling agent per m 3 of water are used in the
- Nanofiltration added to e.g. B. to prevent limescale deposits on the membranes provided for nano-filtering.
- activated sludge is flaked with the. mixed to wastewater to be cleaned.
- the organic impurities contained in the wastewater are from the
- Activated sludge flakes are absorbed and largely biodegraded within a few hours.
- the oxygen required for this is introduced into the waste water to be cleaned by fans attached to the bottom of the aeration tank.
- a sedimentation tank which is hydraulically connected to it, borders on the activation tank described here. Set in this non-ventilated sedimentation tank the mud. The clarified, excess wastewater is pumped into a second aeration tank. The sludge slides down and from there back into the aeration tank. In this case, slats standing at an angle below the highest water level can be arranged as inclined clarifiers or lamella clarifiers in order to improve the separation of the
- this can also be used as a storage tank with a variable water level.
- Biodegradation in the wastewater to be treated is promoted in another basin.
- the basin provided for this purpose contains growth bodies with very high growth areas.
- the water-cleaning organisms grow on the surface of the fixed bed provided in the pool (solid body) and in particular eliminate components that are difficult to decompose, which have not yet been eliminated in the first pool. This water can also be aerated. Oxygen is also consumed here, albeit significantly less.
- another revitalized pool is also possible as another pool.
- a filter is provided in a second treatment stage provided according to the invention, for example a filter that constantly cleans itself.
- the water flowing out of the second basin is pumped into the lower third of a dynamic sand filter with a pump and flows through the sand in this filter upwards or from bottom to top.
- the sand in the dynamic sand filter is pumped upwards with air and water through a pipe inside the filter housing. The resulting swirling means that the sand is constantly washed.
- the sand emerging from the inner tube in the upper part of the dynamic sand filter trickles through a chicane onto the surface of the filling of the sand filter.
- the sand in the sand filter flows a small proportion of the already filtered or treated water and thus prevents dirt from penetrating into the drain of the filtrate.
- the water flowing in the dynamic sand filter is returned to the first activation tank together with the washing water of the sand.
- Sand circulation is preferably controlled by the air supply.
- the air supply is switched off by a solenoid valve when the system is at a standstill.
- the sand circulation should be regulated in such a way that sand extraction starts again even after the system has come to a standstill. Higher circulation speeds are not necessary.
- a static sand filter in which further biodegradation of the foreign substances in the waste water to be treated takes place.
- This biodegradation can lead to the top layer of sand filling becoming denser after some time.
- the wastewater is preferably also cleaned using an activated carbon filter.
- This activated carbon filter is used to remove part of the poorly biodegradable waste water contained substances.
- undesirable compression of the surface can also take place in the area of the activated carbon filter, which necessitates backwashing in a period of one to six months.
- Some surfactants are only biodegradable to a limited extent.
- the content of biodegradable surfactants can impair the absorption capacity of the activated carbon of the activated carbon filter until it is exhausted.
- the number of bacteria and organic constituents of the wastewater to be treated can be greatly reduced in the second treatment stage by means of several filters connected in series.
- the wastewater can also be treated by ultrafiltration in the second treatment stage.
- the last portions of organic constituents of the water to be treated such as salts, phosphates, sulfates, hardness formers (such as calcium, magnesium), but also a significant portion of sodium chloride, i.e. common salt, are removed.
- the concentrate with enriched salt and other ingredients can be discarded, partially returned to the reservoir or revitalized pool, or used for other purposes, such as flushing the toilet.
- an antiscaling agent is preferably added to the water flowing into the nanofiltration. The dosing is expediently carried out automatically.
- Fig. 1 is a schematic representation of one embodiment of the
- Fig. 2 is a schematic representation of the second embodiment of this device according to the invention.
- microbiologically pre-cleaned water is conveyed by means of a pump 1 through a line 2 into a basin 3, which serves as a further vitalizing basin.
- a filling 7 made of sand In the dynamic sand filter 6 there is a filling 7 made of sand.
- a pipe 8 runs centrally through this filling 7, into which the water to be treated which is conveyed through the line 5 flows in from above through an inlet 9.
- a conical or funnel-shaped extension 11 Near the lower end of the housing 10 of the dynamic sand filter 6, a conical or funnel-shaped extension 11 is arranged in the same, on which the flow through the tube 8 downward to be treated further
- the wastewater to be further purified is passed by means of a pump 16 through a line 17 into the upper end of a static sand filter 18.
- the wastewater to be treated passes into a further intermediate basin 19, in which a pump 20 is immersed, in order to convey the wastewater from this intermediate basin 19 through a line 21 into the upper end of an activated carbon filter 22.
- a common collecting line 27 serves to return sludge separated from the individual filter elements shown in FIG. 1 into the first activated pool of the plant, not shown in the drawing, for further treatment.
- the storage containers of the device i. H. the pools 15, 19 and 23 can be additionally ventilated in a manner not shown.
- the waste water further purified in the ultrafiltration 26 passes through a line 28 into a nanofiltration 29, in which the previously wastewater that has already been treated is post-treated in order to reliably separate foreign bodies that have not yet separated or unwanted ingredients that have not yet been removed, so that the treated wastewater is of drinking water quality and does not have to be discharged into water, but is available for direct reuse as drinking water stands.
- the wastewater largely pre-cleaned in the activated sludge and finally to be post-treated in the nanofiltration can be intermediate treated according to the invention in a single device and thus represents an alternative embodiment to the embodiment shown in FIG. 1.
- the device shown in FIG. 2 contains, in a housing 30 into which sewage water, which is biologically or microbiologically pretreated, flows from above through a line 31, a meandering filter 32 made of open-pore foam, including a grate 33 and underneath this a filter consisting of a sand filling Sand filter 34, through which the wastewater to be treated flows in succession from top to bottom.
- a meandering filter 32 made of open-pore foam, including a grate 33 and underneath this a filter consisting of a sand filling Sand filter 34, through which the wastewater to be treated flows in succession from top to bottom.
- An outlet valve 36 is connected to the sand filter 34 via an outlet line 35 and can optionally also be connected as an inlet valve in order to be able to backwash the sand in the sand filter 34 for cleaning.
- the outlet line 35 is designed within the housing 30 as a filter tube.
- a float 37 arranged in the upper end of the housing 30 is arranged on the outlet valve 36 via a reversing mechanism, with the aid of which the water level in the housing 30 can be adjusted and regulated.
- the filter 32 which is made of open-pore foam and has a meandering design, is used both for filtering the wastewater flowing through and as a bacterial carrier, so that further biological treatment of the wastewater can take place here.
- rinse water can flow back through at least one filter tube 39 with a connection piece 40 arranged under the grate 33 into the first activated pool for treatment.
- Sand filter 34 in a housing 30 is not only particularly powerful but also extremely inexpensive. Both can also be designed as separate units.
- the combined filter shown in Fig. 2 can be used only for the second treatment stage of the waste water.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Nanotechnology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Water Treatment By Sorption (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2000130984 DE10030984A1 (en) | 2000-06-30 | 2000-06-30 | Purification of waste water to produce drinking water comprises aerobic microbiological treatment, removing material which has not been broken down, followed by biological post-treatment and filtering |
DE10030984 | 2000-06-30 | ||
PCT/EP2001/007053 WO2002006168A1 (en) | 2000-06-30 | 2001-06-22 | Method and device for purifying and treating waste water in order to obtain drinking water |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1294647A1 true EP1294647A1 (en) | 2003-03-26 |
Family
ID=7646776
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01978239A Withdrawn EP1294647A1 (en) | 2000-06-30 | 2001-06-22 | Method and device for purifying and treating waste water in order to obtain drinking water |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1294647A1 (en) |
AU (1) | AU2002210412A1 (en) |
DE (1) | DE10030984A1 (en) |
WO (1) | WO2002006168A1 (en) |
ZA (1) | ZA200201560B (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2488786C (en) * | 2004-12-23 | 2006-07-11 | Envirogain Inc. | Process for treatment of heavy effluent |
WO2007118425A1 (en) * | 2006-04-13 | 2007-10-25 | Dawei Zhang | A method and an apparatus for treating wastewater |
DE102010044733B4 (en) * | 2010-09-08 | 2014-04-24 | Axel Baltzer | Water treatment device for medical purposes |
DE102011118752A1 (en) | 2011-04-21 | 2012-10-25 | Peter Weißbach | Drinking water production, comprises carrying out waste water purification by zeolite filtration, removing heavy metals from raw water with a zeolite based cation exchanger using natural adsorbent, and removing nitrate and nitrite |
CN102757147A (en) * | 2012-07-31 | 2012-10-31 | 中国航天建设集团有限公司 | Electroplating wastewater comprehensive treatment process |
FR3041342B1 (en) * | 2015-09-22 | 2017-10-27 | Woter Sas | WATER TREATMENT DEVICE AND BOAT COMPRISING SUCH A DEVICE |
CN108036730B (en) * | 2017-12-22 | 2019-12-10 | 福建和盛高科技产业有限公司 | Fire point distance measuring method based on thermal imaging |
CN108046504A (en) * | 2017-12-26 | 2018-05-18 | 城口县九龙洞矿泉水有限公司 | A kind of water process production line |
DE102018124744A1 (en) * | 2018-10-08 | 2020-04-09 | Niersberger Wohn- und Anlagenbau GmbH & Co. KG | Method for operating a pressure water filter and system with a pressure water filter |
CN111362496A (en) * | 2020-04-17 | 2020-07-03 | 莱特莱德(北京)环境技术股份有限公司 | Low-energy-consumption membrane-method antibiotic pharmaceutical wastewater recycling system and treatment process thereof |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3048479A1 (en) * | 1980-12-22 | 1982-07-15 | Friedrich 2000 Oststeinbek Schulenburg | Stagnant water clarification - through gravel filter and open-celled foam layer in enclosed basin |
US5458788A (en) * | 1993-03-01 | 1995-10-17 | Jet, Inc. | Plastic media filter |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2623794B1 (en) * | 1987-12-01 | 1991-07-26 | Sogea | CONTINUOUS BIOLOGICAL PURIFICATION DEVICE OF THE UPWATER CIRCULATION TYPE |
DE3829497A1 (en) * | 1988-08-31 | 1990-03-08 | Kernforschungsanlage Juelich | METHOD AND DEVICE FOR THE BIOTECHNOLOGICAL TREATMENT OF LIQUIDS IN A VERTICAL BOWL BED |
JPH04305300A (en) * | 1991-04-02 | 1992-10-28 | Toshiyasu Sato | Waste water treating device |
JP3468784B2 (en) * | 1992-08-25 | 2003-11-17 | 栗田工業株式会社 | Ultrapure water production equipment |
DE9410633U1 (en) * | 1994-07-01 | 1994-08-18 | Eberspächer, Kai, 73770 Denkendorf | Device for treating domestic wastewater |
DE19517473A1 (en) * | 1995-05-12 | 1996-11-14 | Henkel Ecolab Gmbh & Co Ohg | Process for wastewater treatment with recovery of drinking water in high product yields |
CN1255108A (en) * | 1997-04-03 | 2000-05-31 | 弗林斯再循环设备两合公司 | Method for treating waste water, especially from and malt houses and breweries |
EP1086929A1 (en) * | 1999-08-02 | 2001-03-28 | NOPA Ltd. | Process for recycling water in a at least partially closed water cycle |
-
2000
- 2000-06-30 DE DE2000130984 patent/DE10030984A1/en not_active Ceased
-
2001
- 2001-06-22 WO PCT/EP2001/007053 patent/WO2002006168A1/en active Application Filing
- 2001-06-22 AU AU2002210412A patent/AU2002210412A1/en not_active Abandoned
- 2001-06-22 EP EP01978239A patent/EP1294647A1/en not_active Withdrawn
-
2002
- 2002-02-25 ZA ZA200201560A patent/ZA200201560B/en unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3048479A1 (en) * | 1980-12-22 | 1982-07-15 | Friedrich 2000 Oststeinbek Schulenburg | Stagnant water clarification - through gravel filter and open-celled foam layer in enclosed basin |
US5458788A (en) * | 1993-03-01 | 1995-10-17 | Jet, Inc. | Plastic media filter |
Non-Patent Citations (1)
Title |
---|
See also references of WO0206168A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE10030984A1 (en) | 2002-01-10 |
WO2002006168A1 (en) | 2002-01-24 |
ZA200201560B (en) | 2003-05-26 |
AU2002210412A1 (en) | 2002-01-30 |
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