CN103979712B - A kind of coking wastewater pretreatment method - Google Patents
A kind of coking wastewater pretreatment method Download PDFInfo
- Publication number
- CN103979712B CN103979712B CN201410215337.4A CN201410215337A CN103979712B CN 103979712 B CN103979712 B CN 103979712B CN 201410215337 A CN201410215337 A CN 201410215337A CN 103979712 B CN103979712 B CN 103979712B
- Authority
- CN
- China
- Prior art keywords
- waste water
- add
- chemical waste
- coking chemical
- limit
- 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.)
- Active
Links
Landscapes
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The present invention relates to a kind of coking wastewater pretreatment method and system, belong to technical field of sewage.A pretreatment process for coking chemical waste water, comprises the steps: that (1) adds FeSO in coking chemical waste water
4solution, aeration agitation; (2) limit adds the stirring of polyacrylamide limit until mud, water stratification; (3) get upper solution and add hydrogen peroxide, stir; (4) Ca (OH) is added
2regulate pH to 11-13.5, after aeration stirs evenly, stir until mud, water stratification while add polyacrylamide limit; (5) isolate upper solution, regulate pH to 5.0-7.0, enter packing tower, add activated-carbon catalyst catalyzed reaction 2-4h.Method safety of the present invention, simple, efficient, working cost reduce greatly, and the high concentration wastewater treatment produced in coal chemical industry is with a wide range of applications.
Description
Technical field
The invention belongs to technical field of sewage, be specifically related to a kind of coking wastewater pretreatment method and system.
Background technology
Coal tar is the by product in coke production, is one of staple product of coking industry.Coal tar is the organic mixture based on aromatic hydrocarbon, and the main process of processing is distillation, and the products such as the light oil that deep processing obtains, phenol, naphthalene, washing oil, anthracene, carbazole, indoles, pitch are a kind of basic materials of the national economic development.
Pollutant levels in coking chemical waste water are high, composition is complicated, except containing except ammonia nitrogen, thiocyanide, prussiate, also containing the monocycle such as phenol, indoles, quinoline or polycyclc aromatic compound and nitrogenous, sulphur, oxygen heterocycle organic pollutant, belong to one of more unmanageable sewage.The fluctuation of this type of waste water quality, the water yield is comparatively large, extremely unstable; PH is generally 9-13, and COD is between 10000-52000mg/L, and volatile phenol is 3000-15000mg/L, BOD
5about 10000mg/L, petroleum-type≤10000mg/L.At present, the main treatment process used has extraction process, absorption method, steam dephenolize method, ammonia still process method, chemical oxidization method, catalytic oxidation, contact oxidation method, anaerobic process etc. both at home and abroad.From comprehensive angle, there is its limitation.Physical capital construction cost and working cost higher, colourity is more difficult, and biochemical process affects comparatively large by load and water quality, the water yield, colourity difficult degradation and not easily stably reaching standard.Both pretreated water COD are higher, have larger impact to the process of subsequent biochemical method.
Summary of the invention
The object of the invention is to provide a kind of coking wastewater pretreatment method and system.
Based on above-mentioned purpose, this invention takes following technical scheme:
A pretreatment process for coking chemical waste water, comprises the steps: that (1) adds FeSO in coking chemical waste water
4solution, aeration agitation; (2) limit adds the stirring of polyacrylamide limit until mud, water stratification; (3) get upper solution and add hydrogen peroxide, stir; (4) Ca (OH) is added
2regulate pH to 11-13.5, after aeration stirs evenly, stir until mud, water stratification while add polyacrylamide limit; (5) isolate upper solution, regulate pH to 5.0-7.0, enter packing tower, add activated-carbon catalyst catalyzed reaction 2-4h.
Described FeSO
4the concentration of solution is 25 ~ 30g/L, and add-on is 1%-3% of coking chemical waste water volume.
Described step (2) and (4) middle polyacrylamide are 1,200 ten thousand molecular weight cationic polyacrylamides.
The massfraction of described hydrogen peroxide is 10% ~ 20%, add-on be step (3) at the middle and upper levels liquor capacity 0.5%-1.5%.
In step (5), in 1L upper solution, the add-on of activated-carbon catalyst is 50-60mg.
Coking chemical waste water pretreatment system, comprises the water collecting basin, the first equalizing tank, the first settling tank, oxidation pond, the second equalizing tank, the second settling tank, the 3rd equalizing tank and the packing tower that are connected successively by pump.
First settling tank is all connected with sludge sump by pump with the second settling tank.
Method safety of the present invention, simple, efficient, working cost reduce greatly, and the high concentration wastewater treatment produced in coal chemical industry is with a wide range of applications; This process operation reduces than existing process energy consumption, anti-waste water impact load is larger, good stability, the sludge quantity produced is little, processing efficiency is high, the COD solving current Coal Tar Wastewater is greatly high, the unmanageable problem of colourity, is conducive to the economy of environmental improvement and enterprise, efficient, sustainable development.
Accompanying drawing explanation
Fig. 1 is the structural representation of coking chemical waste water pretreatment system in the present invention.
Embodiment
Below in conjunction with specific embodiment, technical scheme of the present invention is described in further detail, but protection scope of the present invention is not limited thereto.
Embodiment 1
As shown in Figure 1, coking chemical waste water pretreatment system, comprises water collecting basin 1, first equalizing tank 2, first settling tank 3, oxidation pond 4, second equalizing tank 5, second settling tank 6, the 3rd equalizing tank 7 and the packing tower 8 that are connected successively by pump.First settling tank 3 is all connected with sludge sump 9 by pump with the second settling tank 6.
Coking wastewater pretreatment method, comprise the steps: that (1) enters water collecting basin 1 through the coking chemical waste water of grid, volume amounts to 20 cubic metres, and waste water enters the first equalizing tank 2 by pump, add the copperas solution that 200L concentration is 30g/L, aeration agitation 10min; (2) the first settling tank 3 is entered by pump again, while adding molecular weight is that 1,200 ten thousand cationic polyacrylamides (50 ion degree) limit is stirred, until mud, the water stratification in the first settling tank 3; (3) by the solution suction oxidation pond 4 on upper strata, by the mud suction sludge sump 9 of lower floor, add in oxidation pond 4 account for liquor capacity in oxidation pond 4 1.5%, massfraction is the hydrogen peroxide of 10wt%, enters the second equalizing tank 5 after stirring 40min; (4) Ca (OH) is added
2, regulate pH to be 12, enter the second settling tank 6, while adding molecular weight is that 1,200 ten thousand cationic polyacrylamides (50 ion degree) limit is stirred, until mud, the water stratification in the second settling tank 6; (5) by solution suction the 3rd equalizing tank 7 on upper strata, by the mud suction sludge sump 9 of lower floor, in the 3rd equalizing tank 7, add the vitriol oil regulates pH to be 6.0, enter packing tower 8, add activated-carbon catalyst (purchased from Zhengzhou Yuan Ze Water Management Equipment Ltd., number of patent application is 2013102235990) catalyzed reaction 4h(is by the liquor capacity finally obtained, every 1L needs 50mg catalyzer), be clear, colorless from the color of packing tower 8 water out.
Embodiment 2
As shown in Figure 1, coking chemical waste water pretreatment system, comprises water collecting basin 1, first equalizing tank 2, first settling tank 3, oxidation pond 4, second equalizing tank 5, second settling tank 6, the 3rd equalizing tank 7 and the packing tower 8 that are connected successively by pump.First settling tank 3 is all connected with sludge sump 9 by pump with the second settling tank 6.
Coking wastewater pretreatment method: (1) enters water collecting basin 1 through the coking chemical waste water of grid, and volume amounts to 20 cubic metres, waste water enters the first equalizing tank 2 by pump, and the concentration adding 400L is the copperas solution of 27g/L, aeration agitation 15min; (2) the first settling tank 3 is entered by pump again, while adding molecular weight is that 1,200 ten thousand cationic polyacrylamides (50 ion degree) limit is stirred, until mud, the water stratification in the first settling tank 3; (3) by the solution suction oxidation pond 4 on upper strata, by the mud suction sludge sump 9 of lower floor, add in oxidation pond 4 account for liquor capacity in oxidation pond 4 1%, massfraction is the hydrogen peroxide of 15wt%, enters the second equalizing tank 5 after stirring 50min; (4) Ca (OH) is added
2, regulate pH to be 11, enter the second settling tank 6, while adding molecular weight is that 1,200 ten thousand cationic polyacrylamides (50 ion degree) limit is stirred, until mud, the water stratification in the second settling tank 6; (5) by solution suction the 3rd equalizing tank 7 on upper strata, by the mud suction sludge sump 9 of lower floor, in the 3rd equalizing tank 7, add 80wt% sulphur acid for adjusting pH is 5.0, enter packing tower 8, add activated-carbon catalyst (purchased from Zhengzhou Yuan Ze Water Management Equipment Ltd., number of patent application is 2013102235990) reaction 2h(is by the liquor capacity finally obtained, every 1L needs 60mg catalyzer), be clear, colorless from the color of packing tower 8 water out.
Embodiment 3
As shown in Figure 1, coking chemical waste water pretreatment system, comprises water collecting basin 1, first equalizing tank 2, first settling tank 3, oxidation pond 4, second equalizing tank 5, second settling tank 6, the 3rd equalizing tank 7 and the packing tower 8 that are connected successively by pump.First settling tank 3 is all connected with sludge sump 9 by pump with the second settling tank 6.
Coking wastewater pretreatment method: (1) enters water collecting basin 1 through the coking chemical waste water of grid, and volume amounts to 20 cubic metres, waste water enters the first equalizing tank 2 by pump, and the concentration adding 600L is the copperas solution of 25g/L, aeration agitation 20min; (2) the first settling tank 3 is entered by pump again, while adding molecular weight is that 1,200 ten thousand cationic polyacrylamides (80 ion degree) limit is stirred, until mud, the water stratification in the first settling tank 3; (3) by the solution suction oxidation pond 4 on upper strata, by the mud suction sludge sump 9 of lower floor, add in oxidation pond 4 account for liquor capacity in oxidation pond 4 0.5%, massfraction is the hydrogen peroxide of 20wt%, enters the second equalizing tank 5 after stirring 1h; (4) Ca (OH) is added
2, regulate pH to be 13.5, enter the second settling tank 6, stir, until mud, the water stratification in the second settling tank 6 while add 1,200 ten thousand cationic polyacrylamides (50 ion degree) limit; (5) by solution suction the 3rd equalizing tank 7 on upper strata, by the mud suction sludge sump 9 of lower floor, in the 3rd equalizing tank 7, add 30wt% sulphur acid for adjusting pH is 7.0, enter packing tower 8, add activated-carbon catalyst (purchased from Zhengzhou Yuan Ze Water Management Equipment Ltd., number of patent application is 2013102235990) reaction 3h(is by the liquor capacity finally obtained, every 1L needs 55mg catalyzer), be clear, colorless from the color of packing tower 8 water out.
In above-described embodiment, indices is as shown in the table before and after treatment:
As seen from the above table: after pre-treatment of the present invention, in waste water, the mean value of COD is 326mg/L, COD clearance reaches 98%, volatile phenol clearance reaches 93%, SS clearance is 94%, colourity is removed to clear, colorless by red-brown, and pretreated waste water can be washed waste water, sump oil water, circulating sewage etc. and enter biochemical system process by other sanitary sewage, flushing waste water, tank of mixed business.
Claims (5)
1. a pretreatment process for coking chemical waste water, is characterized in that, comprises the steps: that (1) adds FeSO in coking chemical waste water
4solution, aeration agitation; (2) limit adds the stirring of polyacrylamide limit until mud, water stratification; (3) get upper solution and add hydrogen peroxide, stir; (4) Ca (OH) is added
2regulate pH to 11-13.5, after aeration stirs evenly, stir until mud, water stratification while add polyacrylamide limit; (5) isolate upper solution, regulate pH to 6.0, enter packing tower, add activated-carbon catalyst catalyzed reaction 2-4h.
2. the pretreatment process of coking chemical waste water according to claim 1, is characterized in that, described FeSO
4the concentration of solution is 25 ~ 30g/L, and add-on is 1%-3% of coking chemical waste water volume.
3. the pretreatment process of coking chemical waste water according to claim 1, is characterized in that, described step (2) and (4) middle polyacrylamide are 1,200 ten thousand molecular weight cationic polyacrylamides.
4. the pretreatment process of coking chemical waste water according to claim 1, is characterized in that, the massfraction of described hydrogen peroxide is 10% ~ 20%, add-on be step (3) at the middle and upper levels liquor capacity 0.5%-1.5%.
5. the pretreatment process of coking chemical waste water according to claim 1, is characterized in that, in step (5), in 1L upper solution, the add-on of activated-carbon catalyst is 50-60mg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410215337.4A CN103979712B (en) | 2014-05-21 | 2014-05-21 | A kind of coking wastewater pretreatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410215337.4A CN103979712B (en) | 2014-05-21 | 2014-05-21 | A kind of coking wastewater pretreatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103979712A CN103979712A (en) | 2014-08-13 |
| CN103979712B true CN103979712B (en) | 2016-01-27 |
Family
ID=51271917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410215337.4A Active CN103979712B (en) | 2014-05-21 | 2014-05-21 | A kind of coking wastewater pretreatment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103979712B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104261615A (en) * | 2014-09-12 | 2015-01-07 | 柳州钢铁股份有限公司 | Treatment method for desorption liquid by process of deeply treating coking wastewater to adsorb resin |
| CN109806890B (en) * | 2019-03-30 | 2021-11-26 | 深圳市泰兴和环保实业有限公司 | Dephosphorization catalyst for chemical nickel plating wastewater, dephosphorization agent containing dephosphorization catalyst and use method of dephosphorization agent |
| CN115571970B (en) * | 2022-12-07 | 2023-03-21 | 河北协同水处理技术有限公司 | Intelligent integrated pretreatment device and process for coking wastewater |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101698550A (en) * | 2009-10-30 | 2010-04-28 | 华南理工大学 | Advanced treating method of landfill leachate |
| CN102267771A (en) * | 2010-06-07 | 2011-12-07 | 鞍钢股份有限公司 | Pretreatment method of coking wastewater |
| CN102515441A (en) * | 2011-12-27 | 2012-06-27 | 昆明钢铁控股有限公司 | Method for treating and recycling coking wastewater |
| CN103130379A (en) * | 2011-12-05 | 2013-06-05 | 鞍钢股份有限公司 | Processing method of coking steaming ammonia wastewater |
| CN103663788A (en) * | 2013-12-11 | 2014-03-26 | 山东华亚环保科技有限公司 | Acid and alkali wastewater treatment technology |
-
2014
- 2014-05-21 CN CN201410215337.4A patent/CN103979712B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101698550A (en) * | 2009-10-30 | 2010-04-28 | 华南理工大学 | Advanced treating method of landfill leachate |
| CN102267771A (en) * | 2010-06-07 | 2011-12-07 | 鞍钢股份有限公司 | Pretreatment method of coking wastewater |
| CN103130379A (en) * | 2011-12-05 | 2013-06-05 | 鞍钢股份有限公司 | Processing method of coking steaming ammonia wastewater |
| CN102515441A (en) * | 2011-12-27 | 2012-06-27 | 昆明钢铁控股有限公司 | Method for treating and recycling coking wastewater |
| CN103663788A (en) * | 2013-12-11 | 2014-03-26 | 山东华亚环保科技有限公司 | Acid and alkali wastewater treatment technology |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103979712A (en) | 2014-08-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107555701B (en) | Low-cost coking wastewater treatment method | |
| CN102701496B (en) | Process for treating high-concentration degradation-resistant organic wastewater | |
| CN101723485B (en) | Method for processing reverse osmosis concentrated water | |
| CN107487966A (en) | A kind of coking distilled ammonia wastewater deep treatment method | |
| CN102992453B (en) | Two-phase circulating catalytic oxidation device | |
| CN102139979A (en) | Method for treating coking waste water by electro-Fenton-coagulation combination process | |
| CN103466852A (en) | Sludge-reduction electrocatalytic reduction-oxidation pretreatment method for nitrotoluene production waste water | |
| CN102020350A (en) | Processing method of heterocatalysis persulfate Fenton oxidation water | |
| CN103539234B (en) | Integrated processing method of fracturing flow-back fluid | |
| CN107555641A (en) | A kind of preprocess method of coking chemical waste water | |
| CN103979712B (en) | A kind of coking wastewater pretreatment method | |
| CN106830487A (en) | A kind of comprehensive processing technique of the high-concentration ammonia nitrogenous wastewater containing organic matter thiocarbamide | |
| CN105254140A (en) | MBBR (moving bed biofilm reactor) and activated sludge process composited two-stage A/O enhanced biological denitrification process for coking wastewater | |
| CN102583879A (en) | High-concentration integrated chemical organic wastewater treatment process | |
| CN102659290A (en) | Method for advanced treatment of high-concentration chemi-mechanical pulp effluent by catalytic oxidation | |
| CN105293643B (en) | The method of catalytic and oxidative electrolysis technology treated sewage | |
| CN101348314B (en) | Method for cooperated industrial wastewater pretreatment by catalytic ion reduction and anaerobic hydrolytic acidification | |
| CN102730897A (en) | Technology for treating and recovering sewage obtained by crushed coal pressure gasification | |
| CN103086480A (en) | Device and method for treating organic waste water through combination of anode filter bed and cathode filter bed | |
| CN103787486A (en) | Organic-wastewater catalytic oxidation method | |
| CN102583679A (en) | Method for treating petrochemical waste water and biochemical tail water through recycled coagulant | |
| CN113402125A (en) | Coking wastewater advanced treatment and reclaimed water recycling method and system | |
| CN103819024A (en) | Pretreatment method for fluorenone production wastewater | |
| CN103043871A (en) | Phenol-contained wastewater treatment method and phenol-contained wastewater treatment system | |
| CN106746052A (en) | A kind of reverse-flow type iron-carbon micro-electrolysis couple Fenton treatment reaction devices |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |