CN102358634A - Deep treatment method for coking waste water - Google Patents
Deep treatment method for coking waste water Download PDFInfo
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- CN102358634A CN102358634A CN201110261657XA CN201110261657A CN102358634A CN 102358634 A CN102358634 A CN 102358634A CN 201110261657X A CN201110261657X A CN 201110261657XA CN 201110261657 A CN201110261657 A CN 201110261657A CN 102358634 A CN102358634 A CN 102358634A
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Abstract
The present invention discloses a deep treatment method for coking waste water. The method comprises the following steps: (1) adding 0.08-0.2 g of a cationic surfactant and 0.25-1.0 g of bentonite to per liter of coking waste water, stirring for 30-60 minutes; (2) adding 0.05-0.2 g of a coagulating agent to the resulting solution from the step (1), stirring for 1 minute at a stirring speed of 200 r/min, then stirring for 15 minute at a stirring speed of 30 r/min; standing and settling for 30 minutes. The method of the present invention has advantages of available raw materials, high efficiency, convenient operation and the like. During the coking waste water treatment process, the bentonite provides a strong adsorption effect for the cationic surfactant, and is self-assembled into the organic bentonite; organic contaminants especially including hardly degradable toxic and organic materials (such as benzo(alpha)pyrene) in the waste water are efficiently removed, such that the discharge of the coking waste water meets the standard so as to protect the ecological environment and the human health.
Description
Technical field
The invention belongs to technical field of waste water processing, relate in particular to a kind of deep treatment method of coking chemical waste water.
Background technology
According to incompletely statistics, the coking chemical waste water of the annual discharging in the whole nation reaches 0.18 hundred million ton, accounts for 2% of industrial wastewater discharge total amount.Containing a large amount of hazardous contaminants in the coking chemical waste water, like prussiate, sulfide, phenolic cpd, nitrogenous, oxygen, thia lopps compound and polycyclic aromatic hydrocarbons, is a kind of poisonous and hazardous industrial organic waste water
[1]After traditional biochemical treatment, most of coking chemical waste water is failed qualified discharge and contain miscellaneous micro-difficult degradation toxic pollutant, as directly entering river, lake, or gets in the edatope, can impact ecotope.Therefore, the deep treatment method of coking chemical waste water has very important significance with human health to preserving the ecological environment.At present, the deep treatment method of coking chemical waste water mainly contains absorption method, advanced oxidation processes, Fenton reagent oxidation style, electrochemical oxidation process etc.But some method has shortcomings such as cost height, complicated operation, is difficult for popularization and application.Absorption method is one of simple and effective method of handling such organic waste water, and key is a high-efficiency adsorbent.
Wilkinite be a kind of be the tonstein of essential mineral with the smectite.Organobentonite after the cats product modification has excellent adsorption performance, in wastewater treatment, has a good application prospect.It is to synthesize organobentonite earlier that traditional organobentonite is handled waste water, uses it in the wastewater treatment again.This technical process is complicated, consuming time, power consumption, and can cause the secondary pollution of tensio-active agent; In the adsorption treatment process, because the organobentonite surface hydrophobicity is stronger, be difficult for evenly spreading in the water, solid-liquid separates difficult, thereby influences delivery turbidity.To above deficiency, utilize the strong ion exchange of wilkinite to cats product, assemble organobentonite voluntarily, efficient simultaneously organic pollutant, especially the difficult degradation toxic organic compound of removing in the coking chemical waste water.Adsorption process adds an amount of coagulating agent after finishing, and promotes the bentonite solid-liquid to separate, and realizes the coking chemical waste water qualified discharge, preserves the ecological environment and human health.
[1] Wei Chaohai etc. coking chemical waste water pollutes characteristic and control process and analysis of strategies. ACTA Scientiae Circumstantiae, 2007,27 (7): 1083-1097.
Summary of the invention
The objective of the invention is deficiency, a kind of deep treatment method of coking chemical waste water of simple and effective is provided to existing treatment technology.
The step of the deep treatment method of coking chemical waste water is following:
(1) adds 0.08 ~ 0.2 g cats product and 0.25 ~ 1.0 g wilkinite in every liter of coking chemical waste water, stirred 30 ~ 60 minutes;
(2) in step (1) gained solution, add 0.05 ~ 0.2 g coagulating agent, 200 r/min stirred 1 minute, and 30 r/min stirred 15 minutes again, and last standing sedimentation got final product in 30 minutes.
Described cats product is the long chain type quaternary surfactant.Described long chain type quaternary surfactant is TTAB, cetyl trimethylammonium bromide or octadecyl trimethylammonium bromide.Said bentonitic particle diameter is that 100 ~ 200 orders, 8 said coagulating agent are Tai-Ace S 150, Poly aluminum Chloride (PAC) or bodied ferric sulfate.
The present invention be directed to coke-oven plant's draining and fail qualified discharge and contain the practical situation of miscellaneous difficult degradation toxic organic compound, develop a kind of advanced treatment method for carbonization wastewater of simple and effective.The result shows that this method can efficiently be removed difficult degradation toxic organic compound in the waste water, makes its qualified discharge, thereby preserves the ecological environment and human health.
Embodiment
Embodiment 1:
In beaker, add 1L second pond coking chemical waste water, its initial COD
CrBe 212 mg/L.Add 0.12 g cetyl trimethylammonium bromide and 0.5 g particle diameter, 100 purpose wilkinites in the waste water, at 25 ℃, 200 r/min stirred 30 minutes; Add 0.1 g Poly aluminum Chloride (PAC) again, 200r/min stirred 1 minute, and 30 r/min stirred 15 minutes; Standing sedimentation 30 minutes is got supernatant and is measured.COD in the waste water
CrClearance greater than 55%, luxuriant and rich with fragrance, pyrene and benzo (a) pyrene clearance are all greater than 95%.Simple to operate, discharged wastewater met the national standard.
Embodiment 2:
In beaker, add 1L second pond coking chemical waste water, its initial COD
CrBe 212 mg/L.Add 0.12 g cetyl trimethylammonium bromide and 0.5 g particle diameter, 100 purpose wilkinites in the waste water; At 25 ℃, 200 r/min stirred 30 minutes, added 0.1 g Tai-Ace S 150 again; 200 r/min stirred 1 minute; 30 r/min stirred 15 minutes, and standing sedimentation 30 minutes is got supernatant and measured.COD in the waste water
CrClearance greater than 55%, luxuriant and rich with fragrance, pyrene and benzo (a) pyrene clearance are all greater than 95%.Simple to operate, discharged wastewater met the national standard.
Embodiment 3:
In beaker, add 1L second pond coking chemical waste water, its initial COD
CrBe 212 mg/L.Add 0.12 g cetyl trimethylammonium bromide and 0.5 g particle diameter, 100 purpose wilkinites in the waste water, at 25 ℃, 200 r/min stirred 30 minutes; Add 0.1 g bodied ferric sulfate again, 200r/min stirred 1 minute, and 30 r/min stirred 15 minutes; Standing sedimentation 30 minutes is got supernatant and is measured.COD in the waste water
CrClearance greater than 55%, luxuriant and rich with fragrance, pyrene and benzo (a) pyrene clearance are all greater than 95%.Simple to operate, discharged wastewater met the national standard.
Embodiment 4:
In beaker, add 1L second pond coking chemical waste water, its initial COD
CrBe 212 mg/L.Add 0.08 g cetyl trimethylammonium bromide and 1.0 g particle diameters, 200 purpose wilkinites in the waste water, at 25 ℃, 200 r/min stirred 60 minutes; Add 0.1 g Poly aluminum Chloride (PAC) again, 200r/min stirred 1 minute, and 30 r/min stirred 15 minutes; Standing sedimentation 30 minutes is got supernatant and is measured.COD in the waste water
CrClearance greater than 55%, luxuriant and rich with fragrance, pyrene and benzo (a) pyrene clearance are all greater than 95%.Simple to operate, discharged wastewater met the national standard.
Embodiment 5:
In beaker, add 1L second pond coking chemical waste water, its initial COD
CrBe 212 mg/L.Add 0.12 g TTAB and 0.5 g particle diameter, 100 purpose wilkinites in the waste water, at 25 ℃, 200 r/min stirred 30 minutes; Add 0.2 g Poly aluminum Chloride (PAC) again, 200r/min stirred 1 minute, and 30 r/min stirred 15 minutes; Standing sedimentation 30 minutes is got supernatant and is measured.COD in the waste water
CrClearance greater than 55%, luxuriant and rich with fragrance, pyrene and benzo (a) pyrene clearance are all greater than 95%.Simple to operate, discharged wastewater met the national standard.
Embodiment 6:
In beaker, add 1L second pond coking chemical waste water, its initial COD
CrBe 212 mg/L.Add 0.2 g cetyl trimethylammonium bromide and 0.5 g particle diameter, 100 purpose wilkinites in the waste water, at 25 ℃, 200 r/min stirred 30 minutes; Add 0.05 g Poly aluminum Chloride (PAC) again, 200r/min stirred 1 minute, and 30 r/min stirred 15 minutes; Standing sedimentation 30 minutes is got supernatant and is measured.COD in the waste water
CrClearance greater than 55%, luxuriant and rich with fragrance, pyrene and benzo (a) pyrene clearance are all greater than 95%.Simple to operate, discharged wastewater met the national standard.
Embodiment 7:
In beaker, add 1L second pond coking chemical waste water, its initial COD
CrBe 212 mg/L.Add 0.2 g octadecyl trimethylammonium bromide and 0.25 g particle diameter, 200 purpose wilkinites in the waste water; At 25 ℃, 200 r/min stirred 30 minutes, added 0.1 g Tai-Ace S 150 again; 200 r/min stirred 1 minute; 30 r/min stirred 15 minutes, and standing sedimentation 30 minutes is got supernatant and measured.COD in the waste water
CrClearance greater than 55%, luxuriant and rich with fragrance, pyrene and benzo (a) pyrene clearance are all greater than 95%.Simple to operate, discharged wastewater met the national standard.
Claims (5)
1. the deep treatment method of a coking chemical waste water is characterized in that its step is following:
(1) adds 0.08 ~ 0.2 g cats product and 0.25 ~ 1.0 g wilkinite in every liter of coking chemical waste water, stirred 30 ~ 60 minutes;
(2) in step (1) gained solution, add 0.05 ~ 0.2 g coagulating agent, 200 r/min stirred 1 minute, and 30 r/min stirred 15 minutes again, and last standing sedimentation got final product in 30 minutes.
2. the deep treatment method of a kind of coking chemical waste water according to claim 1 is characterized in that described cats product is the long chain type quaternary surfactant.
3. the deep treatment method of a kind of coking chemical waste water according to claim 2 is characterized in that described long chain type quaternary surfactant is TTAB, cetyl trimethylammonium bromide or octadecyl trimethylammonium bromide.
4. the deep treatment method of a kind of coking chemical waste water according to claim 1 is characterized in that said bentonitic particle diameter is 100 ~ 200 orders.
5. the deep treatment method of a kind of coking chemical waste water according to claim 1 is characterized in that said coagulating agent is Tai-Ace S 150, Poly aluminum Chloride (PAC) or bodied ferric sulfate.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103240051A (en) * | 2012-03-22 | 2013-08-14 | 武汉科梦环境工程有限公司 | Composite cation modified bentonite and sewage treatment method |
| CN104528899A (en) * | 2014-12-15 | 2015-04-22 | 刘树芹 | Coking wastewater purifying agent as well as preparation method and application thereof |
| CN104724897A (en) * | 2015-03-25 | 2015-06-24 | 广东粤科环保科技有限公司 | Sludge dewatering conditioning agent and use method thereof |
| CN105645635A (en) * | 2016-01-12 | 2016-06-08 | 浙江大学 | Physicochemical treatment method of disperse dye wastewater |
| CN105923684A (en) * | 2016-05-09 | 2016-09-07 | 南京科技职业学院 | Method for treating coking wastewater with microwaves cooperating with crosslinking cyclodextrin |
| CN108706832A (en) * | 2018-06-07 | 2018-10-26 | 广西壮族自治区环境保护科学研究院 | A kind of method of molasses alcohol waste liquid biological decolouring |
| CN112246216A (en) * | 2020-09-28 | 2021-01-22 | 池秀珠 | Preparation method of modified bentonite applied to antimony-containing wastewater treatment |
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| CN1223975A (en) * | 1999-02-05 | 1999-07-28 | 陈弓 | Process for treatment and reutilization of black liquor from paper making plant |
| JP2005046732A (en) * | 2003-07-29 | 2005-02-24 | Green Japan:Kk | Method for manufacturing phosphorus adsorbent |
| CN1196652C (en) * | 2003-04-07 | 2005-04-13 | 浙江大学 | Integral method of synthesizing organobentonite-treating wastewater |
| CN101015787A (en) * | 2006-12-28 | 2007-08-15 | 沈阳化工学院 | Ferrum-titanium modified alta-mud for water treatment and its preparation method |
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- 2011-09-06 CN CN201110261657XA patent/CN102358634A/en active Pending
Patent Citations (4)
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| CN1223975A (en) * | 1999-02-05 | 1999-07-28 | 陈弓 | Process for treatment and reutilization of black liquor from paper making plant |
| CN1196652C (en) * | 2003-04-07 | 2005-04-13 | 浙江大学 | Integral method of synthesizing organobentonite-treating wastewater |
| JP2005046732A (en) * | 2003-07-29 | 2005-02-24 | Green Japan:Kk | Method for manufacturing phosphorus adsorbent |
| CN101015787A (en) * | 2006-12-28 | 2007-08-15 | 沈阳化工学院 | Ferrum-titanium modified alta-mud for water treatment and its preparation method |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103240051A (en) * | 2012-03-22 | 2013-08-14 | 武汉科梦环境工程有限公司 | Composite cation modified bentonite and sewage treatment method |
| CN104528899A (en) * | 2014-12-15 | 2015-04-22 | 刘树芹 | Coking wastewater purifying agent as well as preparation method and application thereof |
| CN104528899B (en) * | 2014-12-15 | 2016-08-17 | 新昌县镜岭镇康柳电子元件厂 | A kind of coking chemical waste water cleanser and preparation method and application |
| CN104724897A (en) * | 2015-03-25 | 2015-06-24 | 广东粤科环保科技有限公司 | Sludge dewatering conditioning agent and use method thereof |
| CN105645635A (en) * | 2016-01-12 | 2016-06-08 | 浙江大学 | Physicochemical treatment method of disperse dye wastewater |
| CN105923684A (en) * | 2016-05-09 | 2016-09-07 | 南京科技职业学院 | Method for treating coking wastewater with microwaves cooperating with crosslinking cyclodextrin |
| CN108706832A (en) * | 2018-06-07 | 2018-10-26 | 广西壮族自治区环境保护科学研究院 | A kind of method of molasses alcohol waste liquid biological decolouring |
| CN112246216A (en) * | 2020-09-28 | 2021-01-22 | 池秀珠 | Preparation method of modified bentonite applied to antimony-containing wastewater treatment |
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Application publication date: 20120222 |