EP1421034A2 - Method for biologically treating waste water containing dye from the textile and leather industry - Google Patents
Method for biologically treating waste water containing dye from the textile and leather industryInfo
- Publication number
- EP1421034A2 EP1421034A2 EP02764557A EP02764557A EP1421034A2 EP 1421034 A2 EP1421034 A2 EP 1421034A2 EP 02764557 A EP02764557 A EP 02764557A EP 02764557 A EP02764557 A EP 02764557A EP 1421034 A2 EP1421034 A2 EP 1421034A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- stage
- waste water
- ozone
- treatment stage
- anaerobic
- 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- Withdrawn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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- 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
-
- 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
-
- 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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/22—Nature of the water, waste water, sewage or sludge to be treated from the processing of animals, e.g. poultry, fish, or parts thereof
- C02F2103/24—Nature of the water, waste water, sewage or sludge to be treated from the processing of animals, e.g. poultry, fish, or parts thereof from tanneries
-
- 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
- C02F2103/30—Nature of the water, waste water, sewage or sludge to be treated from the textile industry
-
- 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
- C02F2209/04—Oxidation reduction potential [ORP]
-
- 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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
Definitions
- the sedimentation of the activated sludge can take place in a separate sedimentation stage or by holding back the sludge in the facultative anaerobic or aerobic activation stage (2nd treatment stage).
- the known method is carried out with high efficiency and the lowest energy consumption.
- the object of the present invention is essentially to provide a method with which, with relatively little additional effort, to remove any residual color that may still be present from the wastewater obtained according to the prior art mentioned and to make it usable again as process water.
- the desired decolorization of the recycling water can be achieved by adding ozone alone.
- the combination of both oxidizing agents also leads to a significantly increased degree of mineralization, which up to a degree of mineralization of 30% results in a significantly increased degree of ozone utilization compared to the sole use of ozone.
- the procedure can be such that ozone and hydrogen peroxide are used in a substoichiometric H 2 O 2 / O 3 molar ratio of 3/8 to 7.8.
- an ozone mass flow of 1.0 to 16.0 g ozone / m 3 is used in the case of recycling waters with an average transparent color number> 4 ⁇ .
- the invention proposes that the recycling water be filtered after the aerobic aftertreatment and before the chemical-oxidative treatment stage.
- the recycling water is usually sent to the chemical-oxidative treatment stage and from there it is returned to the production plant as process water.
- the recycling water can be partially or, in a borderline case, after an aerobic aftertreatment fed directly to a municipal wastewater treatment plant.
- the dye-containing wastewater coming from a textile finishing or leather processing company first reaches a pretreatment tank 1.
- the pretreatment tank first serves as a mixing and equalizing tank.
- a mixing and equalizing basin is necessary anyway because of the uneven amount of waste water and because of their uneven nature.
- the size of the pretreatment container 1 depends on the type and amount of waste water and should be chosen, if possible, in such a way that a minimum stay of six hours is guaranteed.
- the pre-treatment tank 1 is followed by an activated sludge basin 2, in which a highly contaminated, optionally anaerobic or aerobically operated biology is maintained.
- the room load is at least 1.0 kg BOD / (m 3 xd) (biological oxygen demand per cubic meter of wastewater and day).
- BOD / (m 3 xd) biological oxygen demand per cubic meter of wastewater and day.
- optionally anaerobic bacterial strains can be grown with minimal oxygen supply.
- the process can be supported by adding lime with which the pH value of the waste water can be regulated.
- the wastewater-sludge mixture overflows after a certain period of time in the activated sludge basin 2 into a settling basin 3, in which the activated sludge settled is pumped out. This is partly returned after filtration in a fine rake system 4 into the activated sludge basin 2 and the pre-treatment tank 1, the ratio being approximately 2/3 (activated sludge tank 2) to 1/3 (pre-treatment tank 1). The rest goes to a sludge treatment plant, where it is thickened and can be removed for sludge disposal.
- a redox potential of ⁇ 0 mV is generated by the cultivated microorganisms and by maintaining an anaerobic environment in the pretreatment container 1, so that anaerobic cleavage (reduction) of the dyes sets in after sufficient contact time with the dye-containing waste water.
- the activated sludge from the highly loaded, optionally anaerobic activated sludge plant has a high oxygen consumption, so that the degradation of the substrates present in the textile waste water proceeds much faster and the redox potential in the pretreatment tank 1 can drop to as low as -600 mV.
- the redox potential is therefore measured in the pretreatment container 1 and adjusted to a redox potential between -50 mV and -550 mV, preferably less than -350 mV, by controlled ventilation or sludge introduction, with simultaneous vitalization of the microorganisms involved by the atmospheric oxygen entered in the pretreatment container 1 and in the optional anaerobic / aerobic activation system (activated sludge pool 2).
- the decolorization includes depending on the dry matter in the pretreatment tank 1. At the usual solids concentration, the dry matter content should be> 1g / l.
- a prerequisite for the growth of the microorganisms is also an adequate supply of nutrients, which can be added, for example, as a phosphorus and nitrogen-containing fertilizer and as readily available carbon in the pretreatment container 1, as indicated in the drawing.
- nutrients can also be added to the activated sludge basin 2. Since further waste water, for example from the sanitary area, is also produced in such an industrial company, it can also be used for nutrient input.
- the sanitary wastewater is advantageously added to the activated sludge before it passes through the fine rake system 4, so that the sanitary wastewater is removed at the same time as solids.
- the ingredients remaining in the wastewater after the reduction can be removed biologically with an aerobic aftertreatment.
- the wastewater is therefore fed from the sedimentation basin 3 to an aerobic post-treatment stage 5.
- the recycling water is filtered. Filters of known design can be used for this.
- the filtered recycling water can then be fed to the process via a buffer tank 8 if only low demands are placed on the process water. If, however, high demands are placed on the process water, then it is passed through a chemical-oxidative treatment stage 7, in which ozone or ozone in combination with hydrogen peroxide is added as the oxidizing agent.
- decolorization of the recycling water with an average transparent color number ⁇ 5m "1 in the wavelengths 436, 525 and 620 nm is achieved with an ozone mass flow of 6.0 to 15.0 g ozone / m 3 of biologically pretreated water.
- the removal can also be achieved by adding ozone alone, i.e. without hydrogen peroxide.
- the degree of mineralization is increased and in the range from 20 to 35% degree of mineralization, a much higher degree of ozone utilization is achieved than when using ozone alone.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10143600 | 2001-09-05 | ||
DE2001143600 DE10143600A1 (en) | 2001-09-05 | 2001-09-05 | Biological treatment of dye-containing waste water from the textile and leather industry comprises adding ozone and optionally hydrogen peroxide to the treated water and recycling it as process water |
PCT/DE2002/003156 WO2003024875A2 (en) | 2001-09-05 | 2002-08-27 | Method for the biological and chemical/oxidative treatment of waste water containing dye |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1421034A2 true EP1421034A2 (en) | 2004-05-26 |
Family
ID=7697864
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02764557A Withdrawn EP1421034A2 (en) | 2001-09-05 | 2002-08-27 | Method for biologically treating waste water containing dye from the textile and leather industry |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1421034A2 (en) |
AU (1) | AU2002328789A1 (en) |
DE (1) | DE10143600A1 (en) |
WO (1) | WO2003024875A2 (en) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6872313B1 (en) * | 2002-09-23 | 2005-03-29 | Agrimond Usa Corporation | Domestic wastewater treatment system |
CN100460042C (en) * | 2007-05-22 | 2009-02-11 | 龚先木 | Bidirectional flooding separator for treating waste water of hydraulic loom |
CN101638286B (en) * | 2009-09-10 | 2011-05-25 | 浦华控股有限公司 | Treatment method of sewage containing dyeing wastewater |
CN103508579A (en) * | 2012-06-15 | 2014-01-15 | 苏州腾辉环保科技有限公司 | Treatment process for waste water with washing agent |
CN103435217B (en) * | 2013-08-07 | 2014-12-03 | 广州博芳环保科技有限公司 | Treatment process for sulfuration printing and dyeing wastewater |
CN103880210B (en) * | 2014-03-14 | 2015-07-15 | 浙江迪邦化工有限公司 | Treating and recycling process of acid wastewater generated in disperse dye production |
CN103951105A (en) * | 2014-04-27 | 2014-07-30 | 唐山正元管业有限公司 | Method for recycling and treating hot galvanizing process waste water |
CN106007051A (en) * | 2016-05-24 | 2016-10-12 | 瓮福(集团)有限责任公司 | Sewage treatment method for low-quality lime |
CN106630472A (en) * | 2016-12-30 | 2017-05-10 | 四川亿龙环保工程有限公司 | Printing and dyeing waste water treatment process |
CN106865911A (en) * | 2017-04-07 | 2017-06-20 | 绍兴柯桥江滨水处理有限公司 | A kind of advanced treatment method for printing and dyeing wastewater and device |
CN108558133A (en) * | 2017-11-13 | 2018-09-21 | 南通东屹高新纤维科技有限公司 | A kind of waste water treatment process and system |
CN110282738A (en) * | 2019-05-16 | 2019-09-27 | 厦门大学 | A method of azo dyeing waste water is handled using biofilter |
CN110498560A (en) * | 2019-07-23 | 2019-11-26 | 广东莞绿环保工程有限公司 | A kind of textile printing and dyeing wastewater processing method |
CN113149343B (en) * | 2021-03-26 | 2022-05-17 | 北京城市排水集团有限责任公司 | Electrochemical nitrogen and phosphorus removal device and method |
CN114590974A (en) * | 2022-04-02 | 2022-06-07 | 詹长贵 | Coking wastewater advanced treatment process |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19716939C2 (en) * | 1997-04-23 | 2002-06-27 | Bernd Diering | Process and wastewater treatment plant for the biological treatment of dye-containing wastewater from the textile and leather industry |
JP2934617B2 (en) * | 1998-01-13 | 1999-08-16 | 株式会社共信 | Water reuse system for textile washing water |
-
2001
- 2001-09-05 DE DE2001143600 patent/DE10143600A1/en not_active Withdrawn
-
2002
- 2002-08-27 EP EP02764557A patent/EP1421034A2/en not_active Withdrawn
- 2002-08-27 AU AU2002328789A patent/AU2002328789A1/en not_active Abandoned
- 2002-08-27 WO PCT/DE2002/003156 patent/WO2003024875A2/en not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO03024875A3 * |
Also Published As
Publication number | Publication date |
---|---|
WO2003024875A3 (en) | 2003-07-03 |
WO2003024875A2 (en) | 2003-03-27 |
AU2002328789A1 (en) | 2003-04-01 |
DE10143600A1 (en) | 2003-03-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69202985T2 (en) | METHOD AND SYSTEM FOR BIOLOGICAL REMOVAL OF NITROGEN FROM SEWAGE. | |
DE68904598T2 (en) | WASTEWATER TREATMENT METHOD. | |
DE2715256A1 (en) | PRODUCTION OF ACTIVATED MUD WITH REDUCED VOLUME | |
EP1421034A2 (en) | Method for biologically treating waste water containing dye from the textile and leather industry | |
DE2640875B2 (en) | Two-stage activated sludge process for cleaning wastewater | |
DE2454426A1 (en) | PROCESS FOR TREATMENT OF RAW WASTEWATER AND INSTALLATION FOR CARRYING OUT THE PROCESS | |
EP1531123B1 (en) | Method and installation for the treatment of soiled water from ships | |
EP0019203B1 (en) | Process and apparatus for nitrification and denitrification of waste waters | |
DE3833185C2 (en) | ||
DE3412553A1 (en) | METHOD AND DEVICE FOR BIOLOGICAL AEROBIC PURIFICATION OF WASTE WATER | |
EP0396142A1 (en) | Process and apparatus for controlling biological processes for phosphor and nitrogen removal in activated sludge plants | |
DE19716939C2 (en) | Process and wastewater treatment plant for the biological treatment of dye-containing wastewater from the textile and leather industry | |
DE3706405A1 (en) | WASTE WATER TREATMENT METHOD | |
AT396684B (en) | Activated sludge process for the purification of waste water | |
DE60111939T2 (en) | PROCESS FOR BIOLOGICAL CLEANING OF WASTEWATER | |
EP0503546B1 (en) | Process for biological purification of water | |
DE102015002850A1 (en) | Sequence of wastewater treatment processes | |
DE3917415C2 (en) | Wastewater treatment processes | |
DE4138667A1 (en) | METHOD FOR DISCHARGING DRAIN CLEANER | |
DE19853906C2 (en) | Process and arrangement for cleaning leachate | |
DE102004023171B4 (en) | Process and plant for wastewater treatment | |
DE3150140A1 (en) | Process and equipment for biological effluent treatment | |
DE102010002339A1 (en) | Wastewater treatment plant comprises two biological purification units, from which aerobic purification step is carried out, at least one purification unit for carrying out wet-oxidation followed by additional biological purification unit | |
DE3508299C2 (en) | ||
DE2526095B2 (en) | Process for cleaning waste water, in particular oil and fat-containing waste water |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20040319 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO SI |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: DOEPKENS, ECKART Inventor name: KRULL, RAINER Inventor name: JUNG, THOMAS Inventor name: HEMPEL, DIETMAR, C. Inventor name: METZEN, PETER Inventor name: DIERING, ANDREAS Inventor name: DIERING, BERND |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: METZEN, PETER Owner name: DIERING, ANDREAS Owner name: DIERING, BERND |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: DIERING, BERND Inventor name: DOEPKENS, ECKART Inventor name: KRULL, RAINER Inventor name: JUNG, THOMAS Inventor name: HEMPEL, DIETMAR C. Inventor name: METZEN, PETER Inventor name: DIERING, ANDREAS |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: METZEN, PETER Owner name: DIERING, ANDREAS |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20090303 |