CN101549940B - Technique of treating textile dyeing waste water - Google Patents
Technique of treating textile dyeing waste water Download PDFInfo
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- CN101549940B CN101549940B CN2009101153802A CN200910115380A CN101549940B CN 101549940 B CN101549940 B CN 101549940B CN 2009101153802 A CN2009101153802 A CN 2009101153802A CN 200910115380 A CN200910115380 A CN 200910115380A CN 101549940 B CN101549940 B CN 101549940B
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- 239000002351 wastewater Substances 0.000 title claims abstract description 75
- 238000004043 dyeing Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000004753 textile Substances 0.000 title claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000010802 sludge Substances 0.000 claims abstract description 17
- 239000000126 substance Substances 0.000 claims abstract description 16
- 238000002156 mixing Methods 0.000 claims abstract description 9
- 239000002245 particle Substances 0.000 claims abstract description 4
- 238000005562 fading Methods 0.000 claims abstract description 3
- 238000005273 aeration Methods 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 10
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 10
- 229910052760 oxygen Inorganic materials 0.000 claims description 10
- 239000001301 oxygen Substances 0.000 claims description 10
- 239000000701 coagulant Substances 0.000 claims description 7
- 238000000354 decomposition reaction Methods 0.000 claims description 6
- 230000001112 coagulant Effects 0.000 claims description 5
- RUTXIHLAWFEWGM-UHFFFAOYSA-H Iron(III) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 4
- 235000014171 carbonated beverage Nutrition 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 4
- 229940032950 ferric sulfate Drugs 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 238000005188 flotation Methods 0.000 claims description 4
- 229910000360 iron(III) sulfate Inorganic materials 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 3
- 238000006065 biodegradation reaction Methods 0.000 claims description 3
- 230000015556 catabolic process Effects 0.000 claims description 3
- 230000004059 degradation Effects 0.000 claims description 3
- 238000006731 degradation reaction Methods 0.000 claims description 3
- 230000002906 microbiologic Effects 0.000 claims description 3
- 239000002244 precipitate Substances 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims description 3
- 239000006228 supernatant Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 abstract 1
- 239000005416 organic matter Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 8
- 244000005700 microbiome Species 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 230000001413 cellular Effects 0.000 description 2
- 230000001351 cycling Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 241000447394 Desmos Species 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 230000036740 Metabolism Effects 0.000 description 1
- 241000589651 Zoogloea Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive Effects 0.000 description 1
- 230000001464 adherent Effects 0.000 description 1
- 230000001580 bacterial Effects 0.000 description 1
- 238000002306 biochemical method Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 230000035786 metabolism Effects 0.000 description 1
- 230000000414 obstructive Effects 0.000 description 1
- 239000011146 organic particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
Abstract
The present invention relates to a technique for treating the textile dyeing waste water, integrating a physical, chemical and biological treatment method, by means of employing a plurality of programtreatment of removing rubbish deposition, adjusting pH value, fading, subsiding suspended particles, decomposing anaerobically organic large particles, mixing and agitating, decomposing aerobically, subsiding activated sludge floccule body, decomposing residual organic matter, removing suspended substance, filtrating and the like, to the waste water, thereby the waste water will meet the discharging standard after the treatment, also the waste water may be recovered into the department to reuse so as to circulate the water; the technique of the invention has the advantages of a stable and reliable operation, a low treatment cost and a simple operation.
Description
Technical field
The present invention relates to a kind of waste water treatment process, relate in particular to a kind of technique for the treatment of textile dyeing waste water.
Background technology
Can produce high pollution waste water in the printing and dyeing production process, pollution indexs such as the colourity of this class waste water, concentration of suspension, COD chemical oxygen demand (COD), BOD biochemical oxygen demand (BOD) are all very high, and because the water quality of waste water and the water yield are all unstable, more difficult.Usually biochemical method is adopted in the processing of dyeing waste water, but often treatment effect is undesirable in actual moving process, its major cause is that pollutant component complexity in the waste water, the water yield change greatly, more there is the additive that adopts in some waste water treatment process to be unfavorable for the growth of biological respinse bacterial classification, reaches reuse or emission standard so adopt these methods to be difficult to make waste water to be done.
Summary of the invention
The purpose of this invention is to provide a kind of effective technique for the treatment of textile dyeing waste water, overcome the deficiencies in the prior art.
The technical solution adopted in the present invention is to achieve the above object of the invention:
Technique for the treatment of textile dyeing waste water comprises the steps:
A, materialization are handled: the waste water that printing and dyeing workshop produces is disposed rubbish by grid, the pH value that drops into acid or alkali control waste water then is between 8～9, then add bodied ferric sulfate and carry out fade treatment, again the waste water after fading is left standstill processing, make wherein big suspended particle precipitation;
B, biochemical treatment: the organism in the dyeing waste water after with facultative anaerobe materialization being handled carries out anaerobic decomposition, makes to be difficult to biodegradable larger molecular organics in the waste water and to be converted into the small organic molecule that is easy to the biological biochemistry degraded; The waste water that then will hold concurrently behind the oxygen is introduced agitated pool, makes it stir, contact, adhere to the returnedactivatedsludge thorough mixing; Then waste water is introduced biochemical aeration tank, utilize the biofloculation bulk absorption in the pond, the organism in the decomposition waste water; Behind microbiological degradation, waste water is introduced second pond, the active sludge biological flocs unit that precipitates in the waste water is back in the agitated pool;
C, subsequent disposal: the thousandth dosing coagulant of pressing the clear liquid amount in the supernatant liquor after the biochemical treatment, make that remaining organism decomposition, water separate with mud in the clear water, use molten carbonated drink the suspended substance removal in the clear water then, it is standby after filtering clear water to be introduced the reuse water clean water basin again.
In the described biochemical treatment, waste water is stirred in the mixed once agitated pool with mixing of returnedactivatedsludge and carries out, and contact, stick in the secondary mixing agitated pool and carry out, and waste water residence time in two ponds is 10～20 minutes.
The envrionment conditions of described biochemical aeration tank is controlled at: 1) dissolved oxygen 2～4mg/L, 2) temperature is 35 ℃～40 ℃, 3) between the pH value 7.5～8.5,4) sludge settling ratio is controlled at about 28%～32%, 5) sludge concentration is controlled between 2～4g/L, 6) sludge volume index is controlled at 90～110ml/g; Wherein waste water is 40～60 hours in the biochemical aeration tank residence time.
Described coagulating agent is, in the described subsequent disposal, dosing coagulant carries out in the one-level air flotation pool in the clear liquid, its dissolved-air pressure is controlled in 4～4.5at scope, with molten carbonated drink a small amount of suspended substance removal in the clear water is carried out in the secondary air-floatation pond, its dissolved-air pressure is controlled in 3.5～4at scope.
The comprehensive physics of the present invention, chemistry, bioremediation adopt the multiple tracks handling procedure, and waste water not only reaches emission standard after treatment, also can be back to the workshop and utilize, to reach the purpose of cycling use of water; That the present invention also has is stable, reliable, processing cost is low, simple operation and other advantages.
Description of drawings
Fig. 1 is sewage treatment technology process figure of the present invention
Embodiment
Technique for the treatment of textile dyeing waste water comprises materialization processing, biochemical treatment and subsequent disposal three phases, referring to Fig. 1:
It mainly is by physics and chemical process waste water to be carried out preliminary treatment that materialization is handled, the waste water that printing and dyeing workshop is produced is flowed through and is introduced equalizing tank behind the grid, wherein the effect of grid is to remove a small amount of rubbish that produces in the production process, in order to avoid influence later process, drop into acid in the equalizing tank or alkali is controlled at about 8.5 the pH value of waste water; Waste water is guided to reaction tank again and added bodied ferric sulfate, add-on is every premium on currency 0.8 gram bodied ferric sulfate, and main effect is the colourity reduction with dyeing waste water; Then waste water is introduced preliminary sedimentation tank, because raw wastewater has a large amount of suspended substances, in order to reduce in the subsequent disposal program load to biochemical aeration tank, prevent that sedimentation of suspension from causing the obstruction of oxygen system in aeration tank inwall or bottom, allow waste water leave standstill for some time in preliminary sedimentation tank and make suspended substance precipitation, wastewater temperature also descends to some extent simultaneously.
Biochemical treatment mainly is to utilize microorganism that waste water is carried out core processing, to remove organism wherein.The steps include: the waste water after the materialization processing is introduced the oxygen compatibility pool that existence has facultative anaerobe, facultative anaerobe carries out incomplete decomposing to the larger molecular organics in the waste water under the anoxybiotic condition, make and be difficult to biodegradable larger molecular organics in the waste water and be converted into the small organic molecule that is easy to biological biochemistry degraded, improved the BOD/COD value of waste water, this autodigestion in the pond of mud decomposes a part; Waste water after the facultative anaerobe processing is flowed into the mixed once agitated pool, making returnedactivatedsludge after the biochemical treatment and the waste water behind the double oxygen obtain thorough mixing stirs, churning time is about 15 minutes, then waste water is incorporated into secondary mixing agitated pool, its effect is that the zoogloea with active sludge fully contacts, adheres to waste water, and the time also is about 15 minutes; Then waste water is introduced biochemical aeration tank and adopted Wastewater Treated by Activated Sludge Process waste water, biofloculation body by artificial culture is arranged in the biochemical aeration tank, it is made up of aerobic microorganism (comprising microfauna, bacterium and other mushrooms) and absorption, adherent organic substance and inorganic substance, the ability that has absorption and decompose organic substance in the waste water demonstrates chemical-biological activities; Wastewater Treated by Activated Sludge Process waste water, these biofloculation bodies are suspended in the biochemical aeration tank, organic substance in the waste water is fully contacted with active sludge microorganism, deliquescent organic substance is adsorbed and absorbs, the cytolemma that penetrates bacterium enters protoplasma, under the effect of desmo enzyme, carry out oxygenolysis, after the organic particle of colloidal state and suspended state is adsorbed in the waste water, resolve into the deliquescent organic substance of energy by the effect of bacterium exoenzyme earlier, and then enter cellular plasm, obtain to decompose by the organism in metabolism (comprising katabolism and anabolism) the one side waste water of microorganism, waste water also obtains handling, synthetic again on the other hand new cellular material, wherein the envrionment conditions of biochemical aeration tank is controlled at: 1) dissolved oxygen 2～4mg/L, 2) temperature is 35 ℃～40 ℃, 3) between the pH value 7.5～8.5,4) sludge settling ratio is controlled at about 30%, 5) sludge concentration is controlled between 2～4g/L, 6) sludge volume index is controlled at 100ml/g, and waste water is about 50 hours in the biochemical aeration tank residence time; Behind microbiological degradation, waste water introducing second pond delay for some time is precipitated, be back in the mixed once agitated pool active sludge biological flocs unit that precipitates standby.
Subsequent disposal is that the supernatant liquor after the biochemical treatment is further handled, make its allow compliance with emission standards, the steps include: clear liquid is introduced the one-level air flotation pool, and press the thousandth dosing coagulant of clear liquid amount, remaining organism in the clear liquid is decomposed, make mud and water sepn, its dissolved-air pressure is controlled in the 4-4.5at scope; Then clear liquid is imported the secondary air-floatation pond, with dissolved air water the suspended substance of emersion in the one-level air flotation pool is removed in this pond, dissolved-air pressure is controlled in the 3.5-4at scope; Clear liquid is flowed through respectively air supporting clean water basin, valveless filtering pool and reuse water clean water basin, wherein the effect of valveless filtering pool is that clear liquid is filtered, and at last clear water is offered printing and dyeing workshop production and uses, to reach the purpose of cycling use of water again.
Claims (2)
1. technique for the treatment of textile dyeing waste water comprises the steps:
A, materialization are handled: the waste water that printing and dyeing workshop produces is disposed rubbish by grid, the pH value that drops into acid or alkali control waste water then is between 8～9, then add bodied ferric sulfate and carry out fade treatment, again the waste water after fading is left standstill processing, make wherein big suspended particle precipitation;
B, biochemical treatment: the organism in the dyeing waste water after with facultative anaerobe materialization being handled carries out anaerobic decomposition, makes to be difficult to biodegradable larger molecular organics in the waste water and to be converted into the small organic molecule that is easy to the biological biochemistry degraded; Waste water after the oxygen of then will holding concurrently is handled is introduced agitated pool, makes it stir, contact, adhere to the returnedactivatedsludge thorough mixing; Then waste water is introduced biochemical aeration tank, utilize the biofloculation bulk absorption in the pond, the organism in the decomposition waste water; Behind microbiological degradation, waste water is introduced second pond, the active sludge biological flocs unit that precipitates in the waste water is back in the agitated pool;
C, subsequent disposal: the thousandth dosing coagulant of pressing the clear liquid amount in the supernatant liquor after the biochemical treatment, make that remaining organism decomposition, water separate with mud in the clear water, use molten carbonated drink the suspended substance removal in the clear water then, it is standby after filtering clear water to be introduced the reuse water clean water basin again;
In the described biochemical treatment, waste water is stirred in the mixed once agitated pool with mixing of returnedactivatedsludge and carries out, and contact, stick in the secondary mixing agitated pool and carry out, and waste water residence time in two ponds is 10～20 minutes;
The envrionment conditions of described biochemical aeration tank is controlled at: 1) dissolved oxygen 2～4mg/L, 2) temperature is 35 ℃～40 ℃, 3) between the pH value 7.5～8.5,4) sludge settling ratio is controlled at 28%～32%, 5) sludge concentration is controlled between 2～4g/L, 6) sludge volume index is controlled at 90～110ml/g; Wherein waste water is 40～60 hours in the biochemical aeration tank residence time.
2. technique for the treatment of textile dyeing waste water according to claim 1, it is characterized in that described coagulating agent is, in the subsequent disposal, dosing coagulant carries out in the one-level air flotation pool in the clear liquid, its dissolved-air pressure is controlled in 4～4.5at scope, with molten carbonated drink a spot of suspended substance removal in the clear water is carried out in the secondary air-floatation pond, its dissolved-air pressure is controlled in 3.5～4at scope.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101153802A CN101549940B (en) | 2009-05-18 | 2009-05-18 | Technique of treating textile dyeing waste water |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101153802A CN101549940B (en) | 2009-05-18 | 2009-05-18 | Technique of treating textile dyeing waste water |
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| CN101549940A CN101549940A (en) | 2009-10-07 |
| CN101549940B true CN101549940B (en) | 2011-10-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108658365A (en) * | 2018-03-16 | 2018-10-16 | 望江硕丰汇锦科技有限公司 | A kind of combined type technique for the treatment of textile dyeing waste water |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102557312A (en) * | 2011-09-06 | 2012-07-11 | 嘉兴市永祥环保设备有限公司 | Suspension removal method for chemical oxygen demand (COD) of printing and dyeing wastewater |
| CN104086047B (en) * | 2014-07-16 | 2015-11-25 | 绍兴水处理发展有限公司 | A kind of sewage sub-prime carries mark and deep treatment method |
| CN104973730A (en) * | 2015-06-19 | 2015-10-14 | 湖州石淙印染有限公司 | Dyeing wastewater treatment method |
| CN105967453B (en) * | 2016-06-24 | 2018-02-13 | 安徽国能亿盛环保科技有限公司 | A kind of combined type technique for the treatment of textile dyeing waste water |
| 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 |
| US11352275B2 (en) | 2018-03-14 | 2022-06-07 | Evoqua Water Technologies Llc | High solids dissolved air flotation system and methods |
| CN112694214A (en) * | 2020-11-23 | 2021-04-23 | 东莞市兆丰环保股份有限公司 | Washing process for wool fabric |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108658365A (en) * | 2018-03-16 | 2018-10-16 | 望江硕丰汇锦科技有限公司 | A kind of combined type technique for the treatment of textile dyeing waste water |
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| CN101549940A (en) | 2009-10-07 |
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Effective date of registration: 20180116 Address after: 317000 south side of Du Bei Road West Section of Duqiao Town, Linhai City, Zhejiang Patentee after: Taizhou donghaixiang Weaving Co., Ltd. Address before: Duqiao 317016 Zhejiang 317000 Du Bei Lu Xi Duan Haixiang Group Co. Ltd. South East Patentee before: Donghaixiang Group Co., Ltd. |
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