CN102701492A - Treatment method of coking wastewater - Google Patents
Treatment method of coking wastewater Download PDFInfo
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- CN102701492A CN102701492A CN2012102433499A CN201210243349A CN102701492A CN 102701492 A CN102701492 A CN 102701492A CN 2012102433499 A CN2012102433499 A CN 2012102433499A CN 201210243349 A CN201210243349 A CN 201210243349A CN 102701492 A CN102701492 A CN 102701492A
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Abstract
The invention discloses a treatment method of coking wastewater. The method is carried out by adsorbing and coagulating various organic matters which generate COD (Chemical Oxygen Demand) and chroma in the coking wastewater, wherein the coking wastewater undergoes biochemical treatment, the COD of the coking wastewater is less than or equal to 450mg/L, the chroma of the coking wastewater is less than or equal to 150 times and the suspended solid of the coking wastewater is less than or equal to 200mg/L; and the process of adsorbing and precipitating various organic matters which generate COD and chroma in the coking wastewater comprises the steps of: firstly adding activated carbon adsorbent in the coking wastewater to ensure that the organic matters which generate COD and chroma in the coking wastewater are fully adsorbed, then adding coagulant polymeric ferric sulfate to ensure that the adsorbed organic matters and the adsorbent condensed suspended matters are removed after precipitation, and finally adding coagulant aid polyacrylamide to ensure that the precipitation is complete. According to the method disclosed by the invention, the COD of the biochemically treated coking wastewater is less than or equal to 70mg/L, the chroma is less than or equal to 50 and the SS (suspended solid) is less than or equal to 70mg/L, so that the coking wastewater meets the level one discharge standard requirement newly enacted by the country.
Description
Technical field
The present invention relates to a kind of method of wastewater treatment, be specifically related to the treatment process of the coking chemical waste water after a kind of biochemical treatment.
Background technology
Coking chemical waste water is the extremely complicated waste water of a kind of composition that contains tens kinds of pollutents such as phenol, cyanogen, benzene, ammonia nitrogen, and it is a kind of organic waste water of typical, difficult degradation.The method of Treatment of Coking Effluent is a lot, generally adopt biochemical treatment at home after, again through precipitate and separate, it is NH as a result
3-N generally can be up to standard, and suspended substance is about 100mg/L, and COD at 100～150 times (extension rates), reaches the national grade one discharge standard requirement in 100～200mg/L, colourity far away.On this basis, after coagulating treatment, suspended substance can reach≤70mg/L, and COD, chromaticity index still do not reach the national grade one discharge standard requirement.This mainly is that the material that forms COD, colourity is due to the complicated organism, and these organism extremely are difficult to degrade.
Summary of the invention
The object of the present invention is to provide a kind of treatment process of the coking chemical waste water after biochemical treatment, so that its COD and chromaticity index reach the new first discharge standard requirement of formulating of country.
The present invention seeks to realize like this:
A kind of treatment process of coking chemical waste water; It is characterized in that: it is through producing the various organism of COD and colourity in absorption and the said coking chemical waste water of coagulation; Wherein said coking chemical waste water is the coking chemical waste water after biochemical treatment, its COD≤450mg/L, colourity≤150 times, suspended substance≤200mg/L; Said through absorption with precipitate in the said coking chemical waste water the various organism that produce COD and colourity and be meant at first and in said coking chemical waste water, add acticarbon; Fully adsorbed so that produce the various organism of COD and colourity in the said coking chemical waste water; And then the dosing coagulant bodied ferric sulfate removes the said various organism that are adsorbed and said sorbent material cohesion suspended substance post precipitation, adds the coagulant aids SEPIGEL 305 at last again and makes its said deposition complete; Wherein the add-on of activated carbon of sorbent is 0.15～0.18g by every liter of said coking chemical waste water; The add-on of said coagulant polymeric ferric sulfate is 0.1～0.6g by every liter of said coking chemical waste water, and the add-on of said coagulant aids SEPIGEL 305 is 0.03～0.05g by every liter of said coking chemical waste water.
Specific surface area>=the 1000m of above-mentioned gac
2/ g, surface density 450～520g/L, granularity>=150 orders, methylene blue adsorption rate>=100mg/g; Density>=the 1.05g/ml of above-mentioned SEPIGEL 305, and before use by 30～40 times of said add-on dilutions.Commodity bodied ferric sulfate outward appearance is the sorrel thick liquid; Basicity 8～16%; Total iron content >=11% (in the quality percentage composition); Density >=1.45g/ml, when in aforesaid method, using bodied ferric sulfate stoste being diluted to mass percentage concentration is that 20% the bodied ferric sulfate aqueous solution (as containing 200kg bodied ferric sulfate stoste in 1 ton of bodied ferric sulfate aqueous solution) adds in the coking chemical waste water and handles.
Adopt the coking chemical waste water water quality after aforesaid method is handled as clear as crystal, can reach the new first discharge standard of formulating of country fully, its COD≤70mg/L, colourity≤50 degree, SS≤70mg/L.
The contriver finds in R&D process; Adopt the gac of said amount that coking chemical waste water is handled in advance; Adopt bodied ferric sulfate as coagulating agent again, the SEPIGEL 305 that cooperates said amount is to Treatment of Coking Effluent, and formed alumen ustum is heavy, flco generates fast; Big and closely knit, the precipitate and separate effect is good especially.
Specifically, a kind of treatment process of coking chemical waste water, it may further comprise the steps:
A. in above-mentioned coking chemical waste water, add activated carbon of sorbent, its add-on is 0.15～0.18g by every liter of said coking chemical waste water; And stir with waste water with pressurized air and to mix or to mix through line mixer and waste water;
B. add coagulant polymeric ferric sulfate then, the add-on of bodied ferric sulfate is 0.1～0.6g by every liter of said coking chemical waste water, and mixes or mix through line mixer and waste water with waste water with the pressurized air stirring;
C. add the coagulant aids SEPIGEL 305 at last, its add-on is 0.03～0.05g by every liter of said coking chemical waste water, and mixes or mix through line mixer and waste water with waste water with the pressurized air stirring;
D. with the said coking chemical waste water after the above-mentioned processing through settling tank stop, liquid is carried out in sedimentation after 0.5～1.5 hour, get final product solid the separation.
Specific surface area>=the 1000m of the gac in the above-mentioned a step
2/ g, surface density 450-520g/L, granularity>=200 orders, methylene blue adsorption rate>=120mg/g; Before use bodied ferric sulfate stoste to be diluted to mass percentage concentration be 20% the bodied ferric sulfate aqueous solution to bodied ferric sulfate in the b step; Density>=the 1.05g/ml of SEPIGEL 305 in the c step, and before use by 30～40 times of said add-on dilutions.
Beneficial effect of the present invention:
(1) contriver handles the coking chemical waste water after biochemical treatment through using the present invention at Chongqing Iron & Steel Co. Ltd. Coking Plant Wastewater station; Guaranteed the coking chemical waste water COD≤70mg/L after biochemical treatment; Colourity≤50 degree; SS≤70mg/L, thus make said coking chemical waste water reach the new first discharge standard requirement of formulating of country, see table 1 in detail.
(2) simple, the not pollution of the present invention, amount of activated is less, cost of water treatment is low, its water treatment agent expense is 5.4 yuan/m
3Below, the sludge quantity that is produced simultaneously reduces, and the cost of press filtration mud has also reduced.
Embodiment
Further specify the present invention through embodiment below, but the present invention is not limited to these embodiment.
Embodiment 1
A kind of treatment process of coking chemical waste water, it may further comprise the steps:
A. in the coking chemical waste water after biochemical treatment, add activated carbon of sorbent, its add-on is 0.18g by every liter of said coking chemical waste water; And stir with waste water with pressurized air and to mix or to mix through line mixer and waste water;
B. add coagulant polymeric ferric sulfate then, the add-on of bodied ferric sulfate is 0.4g by every liter of said coking chemical waste water, and mixes or mix through line mixer and waste water with waste water with the pressurized air stirring;
C. add the coagulant aids SEPIGEL 305 at last, its add-on is 0.05g by every liter of said coking chemical waste water, and mixes or mix through line mixer and waste water with waste water with the pressurized air stirring;
D. with the said coking chemical waste water after the above-mentioned processing through settling tank stop, liquid is carried out in sedimentation after 1.0 hours, get final product solid the separation.
Specific surface area>=the 1000m of the gac in the above-mentioned a step
2/ g, surface density 450-520g/L, granularity>=200 orders, methylene blue adsorption rate>=120mg/g; Before use bodied ferric sulfate stoste to be diluted to mass percentage concentration be 20% the bodied ferric sulfate aqueous solution to bodied ferric sulfate in the b step; Density>=the 1.05g/ml of SEPIGEL 305 in the c step, and before use by 40 times of said add-on dilutions.
Embodiment 2
A kind of treatment process of coking chemical waste water, it may further comprise the steps:
A. in the coking chemical waste water after biochemical treatment, add activated carbon of sorbent, its add-on is 0.15g by every liter of said coking chemical waste water; And stir with waste water with pressurized air and to mix or to mix through line mixer and waste water;
B. add coagulant polymeric ferric sulfate then, the add-on of bodied ferric sulfate is 0.6g by every liter of said coking chemical waste water, and mixes or mix through line mixer and waste water with waste water with the pressurized air stirring;
C. add the coagulant aids SEPIGEL 305 at last, its add-on is 0.03g by every liter of said coking chemical waste water, and mixes or mix through line mixer and waste water with waste water with the pressurized air stirring;
D. with the said coking chemical waste water after the above-mentioned processing through settling tank stop, liquid is carried out in sedimentation after 1.5 hours, get final product solid the separation.
Specific surface area>=the 1000m of the gac in the above-mentioned a step
2/ g, surface density 450-520g/L, granularity>=200 orders, methylene blue adsorption rate>=120mg/g; Before use bodied ferric sulfate stoste to be diluted to mass percentage concentration be 20% the bodied ferric sulfate aqueous solution to bodied ferric sulfate in the b step; Density>=the 1.05g/ml of SEPIGEL 305 in the c step, and before use by 30 times of said add-on dilutions.
Handle COD 400mg/L, 128 times of colourities, suspended substance 120mg/L in the preceding coking chemical waste water; Handle COD 65mg/L in the water quality of back, 16 times of colourities, SS 30mg/L.
Embodiment 3
A kind of treatment process of coking chemical waste water, it may further comprise the steps:
A. in the coking chemical waste water after biochemical treatment, add activated carbon of sorbent, its add-on is 0.16g by every liter of said coking chemical waste water; And stir with waste water with pressurized air and to mix or to mix through line mixer and waste water;
B. add coagulant polymeric ferric sulfate then, the add-on of bodied ferric sulfate is 0.1g by every liter of said coking chemical waste water, and mixes or mix through line mixer and waste water with waste water with the pressurized air stirring;
C. add the coagulant aids SEPIGEL 305 at last, its add-on is 0.04g by every liter of said coking chemical waste water, and mixes or mix through line mixer and waste water with waste water with the pressurized air stirring;
D. with the said coking chemical waste water after the above-mentioned processing through settling tank stop, liquid is carried out in sedimentation after 0.5 hour, get final product solid the separation.
Specific surface area>=the 1000m of the gac in the above-mentioned a step
2/ g, surface density 450-520g/L, granularity>=200 orders, methylene blue adsorption rate>=120mg/g; Before use bodied ferric sulfate stoste to be diluted to mass percentage concentration be 20% the bodied ferric sulfate aqueous solution to bodied ferric sulfate in the b step; Density>=the 1.05g/ml of SEPIGEL 305 in the c step, and before use by 30 times of said add-on dilutions.
Handle COD 180mg/L, 64 times of colourities, suspended substance 82mg/L in the preceding coking chemical waste water; Handle COD 67mg/L in the water quality of back, 16 times of colourities, SS 42mg/L, water quality limpid bright, reach the current national first discharge standard fully.
The embodiment of the invention 1 treatment process is seen table 1 to the result of coking chemical waste water:
Table 1
Claims (3)
1. the treatment process of a coking chemical waste water; It is characterized in that: it is through producing the various organism of COD and colourity in absorption and the said coking chemical waste water of coagulation; Wherein said coking chemical waste water is the coking chemical waste water after biochemical treatment, its COD≤450mg/L, colourity≤150 times, suspended substance≤200mg/L; Said through absorption with precipitate in the said coking chemical waste water the various organism that produce COD and colourity and be meant at first and in said coking chemical waste water, add acticarbon; Fully adsorbed so that produce the various organism of COD and colourity in the said coking chemical waste water; And then the dosing coagulant bodied ferric sulfate removes the said various organism that are adsorbed and said sorbent material cohesion suspended substance post precipitation, adds the coagulant aids SEPIGEL 305 at last again and makes its said deposition complete; Wherein the add-on of activated carbon of sorbent is 0.15～0.18g by every liter of said coking chemical waste water; The add-on of said coagulant polymeric ferric sulfate is 0.1～0.6g by every liter of said coking chemical waste water, and the add-on of said coagulant aids SEPIGEL 305 is 0.03～0.05g by every liter of said coking chemical waste water.
2. treatment process as claimed in claim 1 is characterized in that: the specific surface area>=1000m of said gac
2/ g, surface density 450～520g/L, granularity>=150 orders, methylene blue adsorption rate>=100mg/g; Density>=the 1.05g/ml of above-mentioned SEPIGEL 305, and before use by 30～40 times of said add-on dilutions; During use bodied ferric sulfate stoste being diluted to mass percentage concentration is that 20% the bodied ferric sulfate aqueous solution adds in the coking chemical waste water and handles.
3. treatment process as claimed in claim 1, it may further comprise the steps:
A. in said coking chemical waste water, add activated carbon of sorbent, its add-on is 0.15～0.18g by every liter of said coking chemical waste water; And stir with waste water with pressurized air and to mix or to mix through line mixer and waste water;
B. add coagulant polymeric ferric sulfate then, the add-on of bodied ferric sulfate is 0.1～0.6g by every liter of said coking chemical waste water, and mixes or mix through line mixer and waste water with waste water with the pressurized air stirring;
C. add the coagulant aids SEPIGEL 305 at last, its add-on is 0.03～0.05g by every liter of said coking chemical waste water, and mixes or mix through line mixer and waste water with waste water with the pressurized air stirring;
D. with the coking chemical waste water after the said processing through settling tank stop, liquid is carried out in sedimentation after 0.5～1.5 hour, get final product solid the separation;
Specific surface area>=the 1000m of the gac in the said a step
2/ g, surface density 450-520g/L, granularity>=200 orders, methylene blue adsorption rate>=120mg/g; Before use bodied ferric sulfate stoste to be diluted to mass percentage concentration be 20% the bodied ferric sulfate aqueous solution to bodied ferric sulfate in the b step; Density>=the 1.05g/ml of SEPIGEL 305 in the c step, and before use by 30～40 times of said add-on dilutions.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103723853A (en) * | 2013-12-04 | 2014-04-16 | 江苏双净净化科技有限公司 | Intermittent comprehensive treating system for gas generating station and treating method of intermittent comprehensive treating system |
| CN104150574A (en) * | 2014-07-04 | 2014-11-19 | 安徽三环水泵有限责任公司 | Primary physical-chemical enhancing coagulant for coal mine sewage and treatment method of coagulant |
| CN104150573A (en) * | 2014-07-04 | 2014-11-19 | 安徽三环水泵有限责任公司 | Primary physicochemical enhanced coagulant and treatment method of papermaking wastewater |
| CN104355458A (en) * | 2014-11-21 | 2015-02-18 | 中冶赛迪工程技术股份有限公司 | Deep treatment method of coking wastewater |
| CN105016445A (en) * | 2015-07-31 | 2015-11-04 | 石家庄开发区德赛化工有限公司 | Coking wastewater coagulation adsorbent and application thereof |
| CN105060559A (en) * | 2015-08-05 | 2015-11-18 | 山东益源环保科技有限公司 | Coking wastewater depth treatment process |
| CN106277555A (en) * | 2015-05-27 | 2017-01-04 | 鞍钢股份有限公司 | The high efficiency, low cost processing method of a kind of coking chemical waste water and system |
| CN107117696A (en) * | 2017-06-26 | 2017-09-01 | 太原市淼洁环保技术有限公司 | A kind of preparation method and application of novel adsorption molysite composite flocculation agent |
| CN109384276A (en) * | 2018-10-22 | 2019-02-26 | 鞍山市鑫诚水处理有限公司 | A kind of efficient decolorizing, decyanation, the COD that degrades Waste water treatment medicament |
| CN111704190A (en) * | 2020-06-28 | 2020-09-25 | 南通大学 | Treatment method for decoloring biomass gasification tar wastewater |
| CN115093051A (en) * | 2022-06-28 | 2022-09-23 | 重庆市春园环保科技有限公司 | Method for deeply treating coking wastewater |
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| CN101508498A (en) * | 2009-03-25 | 2009-08-19 | 重庆市大渡口春园工贸公司 | Treatment process for carbonizing wastewater |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103723853A (en) * | 2013-12-04 | 2014-04-16 | 江苏双净净化科技有限公司 | Intermittent comprehensive treating system for gas generating station and treating method of intermittent comprehensive treating system |
| CN103723853B (en) * | 2013-12-04 | 2015-08-26 | 江苏双净净化科技有限公司 | Gas generating station intermittent type total system and treatment process thereof |
| CN104150573B (en) * | 2014-07-04 | 2015-10-28 | 安徽三环水泵有限责任公司 | A kind of one-level materialization enhanced coagulation agent of papermaking wastewater and treatment process thereof |
| CN104150574A (en) * | 2014-07-04 | 2014-11-19 | 安徽三环水泵有限责任公司 | Primary physical-chemical enhancing coagulant for coal mine sewage and treatment method of coagulant |
| CN104150573A (en) * | 2014-07-04 | 2014-11-19 | 安徽三环水泵有限责任公司 | Primary physicochemical enhanced coagulant and treatment method of papermaking wastewater |
| CN104150574B (en) * | 2014-07-04 | 2015-10-28 | 安徽三环水泵有限责任公司 | A kind of one-level materialization enhanced coagulation agent of coal mine sewage and treatment process thereof |
| CN104355458A (en) * | 2014-11-21 | 2015-02-18 | 中冶赛迪工程技术股份有限公司 | Deep treatment method of coking wastewater |
| CN106277555A (en) * | 2015-05-27 | 2017-01-04 | 鞍钢股份有限公司 | The high efficiency, low cost processing method of a kind of coking chemical waste water and system |
| CN106277555B (en) * | 2015-05-27 | 2023-04-07 | 鞍钢股份有限公司 | High-efficiency low-cost treatment method and system for coking wastewater |
| CN105016445A (en) * | 2015-07-31 | 2015-11-04 | 石家庄开发区德赛化工有限公司 | Coking wastewater coagulation adsorbent and application thereof |
| CN105060559A (en) * | 2015-08-05 | 2015-11-18 | 山东益源环保科技有限公司 | Coking wastewater depth treatment process |
| CN107117696A (en) * | 2017-06-26 | 2017-09-01 | 太原市淼洁环保技术有限公司 | A kind of preparation method and application of novel adsorption molysite composite flocculation agent |
| CN109384276A (en) * | 2018-10-22 | 2019-02-26 | 鞍山市鑫诚水处理有限公司 | A kind of efficient decolorizing, decyanation, the COD that degrades Waste water treatment medicament |
| CN111704190A (en) * | 2020-06-28 | 2020-09-25 | 南通大学 | Treatment method for decoloring biomass gasification tar wastewater |
| CN115093051A (en) * | 2022-06-28 | 2022-09-23 | 重庆市春园环保科技有限公司 | Method for deeply treating coking wastewater |
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Application publication date: 20121003 |