CN100357193C - Deep technique for treating charking wastewater - Google Patents
Deep technique for treating charking wastewater Download PDFInfo
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- CN100357193C CN100357193C CNB2006100469109A CN200610046910A CN100357193C CN 100357193 C CN100357193 C CN 100357193C CN B2006100469109 A CNB2006100469109 A CN B2006100469109A CN 200610046910 A CN200610046910 A CN 200610046910A CN 100357193 C CN100357193 C CN 100357193C
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- waste water
- catalyst
- coking
- catalyzer
- chemical waste
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Abstract
The present invention relates to the technical field of waste water treatment, particularly to a deep technique for processing coking waste water via a heterogeneous catalysis oxidation method. The technique carries out deep processing to the coking waste water via a solid catalyst and an auxiliary oxidizing agent which does not generate secondary pollution. A catalyst carrier Al2O3 is firstly soaked in maceration extract Cu (NO3) 2 and is taken out, the Al2O3 is dried in a drier, the qualified catalyst carrier is roasted in a muffle furnace, and the prepared catalyst finished product is standby. The coking waste water is homogenized through a regulating reservoir and is pumped in a device for catalytic oxidation reaction via a water inlet on the upper part of a catalyst absorbing column by a waste water pump, and the coking waste water is discharged from a water outlet of the catalyst absorbing column after purified and reaching the standard. The present invention has the advantages of simple technical process and easy control and can process at normal temperature and normal pressure, and the present invention also has the advantages of few device, little investment, high efficiency, easy catalyst separation and no secondary pollution.
Description
Technical field
The present invention relates to technical field of waste water processing, particularly a kind of technology that adopts heterogeneous catalytic oxidation method Treatment of Wastewater in Coking to handle.
Background technology
Coking chemical waste water is mainly derived from sewage that produces in the outside water of mixed coal and pyrolysis water and gas purification and the Chemicals treating process etc.Belong to the bigger a kind of industrial organic waste water of intractability of high COD value, high phenol value, high ammonia nitrogen amount, endanger bigger.
Coking chemical waste water generally will pass through pre-treatment, and biochemical treatment and advanced treatment could realize qualified discharge.
Traditional deep treatment method mainly contains immobilized biotechnology, flocculence, absorption method etc., there is following shortcoming in these technology: though wherein immobilized biotechnology improves the clearance of COD, but increased sludge volume, increased the weight of the sludge treatment problem, easily caused secondary pollution and complicated operation; Though flocculence is inexpensive, often treatment effect is also not obvious; Active carbon adsorption can reach higher COD clearance, but gac itself costs an arm and a leg, and the regeneration loss of each gac surpasses 10% in the actual motion, and useless carbon needs could regenerate after the pickling, pickling installation easily is corroded, and transferpump also is worn easily, makes running cost very high.For this reason, people are seeking new technological approaches always and are solving above problem.
Summary of the invention
For solving the problem that prior art exists, can not realize qualified discharge at the present China secondary coking chemical waste water of some small-sized coke-oven plants after biochemical treatment, the invention provides a kind of technology of Treatment of Coking Effluent, this technology is with the solid catalyst post of secondary coking chemical waste water through preparing through biochemical treatment, catalytic oxidation purifies back up to standard discharging, reaches the purpose that reduces environmental pollution.
Purpose of the present invention realizes by following technical proposals:
A kind of technology of Treatment of Coking Effluent is characterized in that this technology is to utilize solid catalyst and oxygenant H
2O
2To the technology that coking chemical waste water is handled, its processing step is as follows:
1) Preparation of catalysts flow process; Its step is with support of the catalyst Al
2O
3, through steeping fluid Cu (NO
3)
2Take out dipping back, carries out drying in moisture eliminator, the support of the catalyst roasting in retort furnace after qualified, and it is standby to make the catalyzer finished product;
Processing parameter is: impregnation concentration 1%～5%, dipping time 20～26h.Support of the catalyst suction filtration after at room temperature will flooding, dry under 100～200 ℃ of temperature again, the carrier that will be soaked with catalyzer again in retort furnace with 500～650 ℃ of temperature roasting 3～5h;
2) heterogeneous catalytic oxidation is to the processing technological flow of coking chemical waste water; Its step be with through the secondary coking chemical waste water of biochemical treatment behind the equalizing tank homogeneous, in the water-in fastener driving device on catalyzer adsorption column top, carry out catalytic oxidation with sump pump, purify back up to standard by the discharging of catalyzer adsorption column water outlet, the water outlet bottom is a susceptor;
Processing parameter is: homogeneous sewage pH3～7, oxygenant H
2O
2Dosage 0.1～0.5ml/100ml waste water, reaction times 45～90min.
The present invention's beneficial effect compared with prior art is:
The present invention has good effect: COD to be removed to 26.9 by 328.2 to Treatment of Coking Effluent, and clearance can reach more than 90%; Colourity is removed to 6 by 220, and clearance is 97.0%.Handle back COD and colourity and all reach national grade one discharge standard.Advantage of the present invention be technical process simple, easy to control, can handle at normal temperatures and pressures; Equipment is few, investment is little, efficient is high; Catalyzer is easily separated, can not cause secondary pollution, is a kind of advanced treatment process of coking waste water that wide development prospect is arranged.
Description of drawings
Fig. 1 is the process flow sheet of Treatment of Coking Effluent.
Label is among Fig. 1: 1, evenly temper pond 2, lift pump 3, catalyzed oxidation adsorption column 4, adsorption column water inlet 5, adsorption column water outlet 6, susceptor
Embodiment
Embodiment 1:
1. Preparation of catalysts
Support of the catalyst Al
2O
3In concentration is 3% steeping fluid Cu (NO
3)
2In dipping 20h, the support of the catalyst suction filtration after at room temperature will flood, drying under 150 ℃ of temperature again, the carrier that will be soaked with catalyzer again in retort furnace with 500 ℃ of roasting 3h.
2. heterogeneous catalytic oxidation is to the processing of coking chemical waste water
See Fig. 1, its step be with coking chemical waste water behind equalizing tank 1 homogeneous, carry out catalytic oxidation with sump pump 2 in water-in 4 fastener driving devices on catalyzer adsorption column 3 tops, purify back up to standard by 5 dischargings of catalyzer adsorption column water outlet, water outlet 5 bottoms are susceptors 6;
To transfer its pH3～4, oxygenant H through the secondary coking chemical waste water homogeneous of biochemical treatment
2O
2Dosage 0.2ml/100ml waste water, reaction times 60min.The adsorption column COD for preparing in 1 is removed to 50 by 330, and clearance is 84.8%; Colourity is removed to 10 by 210, and clearance is 95.2%.
Embodiment 2:
1. Preparation of catalysts
Support of the catalyst Al
2O
3In concentration is 5% steeping fluid Cu (NO
3)
2In dipping 24h, the support of the catalyst suction filtration after at room temperature will flood, drying under 100 ℃ of temperature again, the carrier that will be soaked with catalyzer again in retort furnace with 600 ℃ of roasting 4h.
2. heterogeneous catalytic oxidation is to the processing of coking chemical waste water
See Fig. 1, its step be with coking chemical waste water behind equalizing tank 1 homogeneous, carry out catalytic oxidation with sump pump 2 in water-in 4 fastener driving devices on catalyzer adsorption column 3 tops, purify back up to standard by 5 dischargings of catalyzer adsorption column water outlet, water outlet 5 bottoms are susceptors 6;
To transfer its pH5～6, oxygenant H through the secondary coking chemical waste water homogeneous of biochemical treatment
2O
2Dosage 0.3ml/l00ml waste water, reaction times 45min.The adsorption column COD for preparing in 1 is removed to 20 by 330, and clearance is 93.9%; Colourity is removed to 8 by 210, and clearance is 96.1%.
Embodiment 3:
1. Preparation of catalysts
Support of the catalyst Al
2O
3In concentration is 1% steeping fluid Cu (NO
3)
2In dipping 26h, the support of the catalyst suction filtration after at room temperature will flood, drying under 200 ℃ of temperature again, the carrier that will be soaked with catalyzer again in retort furnace with 650 ℃ of roasting 5h.
2. heterogeneous catalytic oxidation is to the processing of coking chemical waste water
See Fig. 1, its step be with coking chemical waste water behind equalizing tank 1 homogeneous, carry out catalytic oxidation with sump pump 2 in water-in 4 fastener driving devices on catalyzer adsorption column 3 tops, purify back up to standard by 5 dischargings of catalyzer adsorption column water outlet, water outlet 5 bottoms are susceptors 6;
To transfer its pH6～7, oxygenant H through the secondary coking chemical waste water homogeneous of biochemical treatment
2O
2Dosage 0.5ml/l00ml waste water, reaction times 90min.The adsorption column COD for preparing in 1 is removed to 86 by 330, and clearance is 74.0%; Colourity is removed to 50 by 210, and clearance is 76.1%.
Claims (1)
1, a kind of technology of Treatment of Coking Effluent is characterized in that this technology is to utilize solid catalyst and oxygenant H
2O
2To the technology that coking chemical waste water is handled, its processing step is as follows:
1) Preparation of catalysts flow process; Its step is with support of the catalyst Al
2O
3, through steeping fluid Cu (NO
3)
2Take out dipping back, carries out drying in moisture eliminator, the support of the catalyst roasting in retort furnace after qualified, and it is standby to make the catalyzer finished product;
Processing parameter is: impregnation concentration 1%～5%, dipping time 20～26h.Support of the catalyst suction filtration after at room temperature will flooding, dry under 100～200 ℃ of temperature again, the carrier that will be soaked with catalyzer again in retort furnace with 500～650 ℃ of temperature roasting 3～5h;
2) heterogeneous catalytic oxidation is to the processing technological flow of coking chemical waste water; Its step be with through the secondary coking chemical waste water of biochemical treatment behind the equalizing tank homogeneous, in the water-in fastener driving device on catalyzer adsorption column top, carry out catalytic oxidation with sump pump, purify back up to standard by the discharging of catalyzer adsorption column water outlet, the water outlet bottom is a susceptor;
Processing parameter is: homogeneous sewage pH3～7, oxygenant H
2O
2Dosage 0.1～0.5ml/100ml waste water, reaction times 45～90min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100469109A CN100357193C (en) | 2006-06-16 | 2006-06-16 | Deep technique for treating charking wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100469109A CN100357193C (en) | 2006-06-16 | 2006-06-16 | Deep technique for treating charking wastewater |
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| Publication Number | Publication Date |
|---|---|
| CN1872730A CN1872730A (en) | 2006-12-06 |
| CN100357193C true CN100357193C (en) | 2007-12-26 |
Family
ID=37483359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100469109A Expired - Fee Related CN100357193C (en) | 2006-06-16 | 2006-06-16 | Deep technique for treating charking wastewater |
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| Country | Link |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101792224B (en) * | 2010-03-30 | 2012-06-27 | 上海华畅环保设备发展有限公司 | Method and device for processing emptied water of delayed coking |
| CN102070263B (en) * | 2010-11-25 | 2012-07-04 | 杭州诚洁环保有限公司 | Coking phenol cyanogen sewage treating method |
| CN109174098A (en) * | 2018-09-16 | 2019-01-11 | 天津大学 | A kind of optimization preparation method of loaded catalyst |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0397342A1 (en) * | 1989-05-09 | 1990-11-14 | Imperial Chemical Industries Plc | Catalysts |
| DE4431790A1 (en) * | 1994-09-08 | 1996-03-14 | Solvay Umweltchemie Gmbh | Removing bromate by=prod. formed during oxidative disinfection |
| CN1493399A (en) * | 2003-07-15 | 2004-05-05 | 浙江大学 | Catalyst for removing nitrate in water and its preparation method |
| CN1576244A (en) * | 2003-07-21 | 2005-02-09 | 中国科学院生态环境研究中心 | Reactor for efficient removing organic pollutanti in water by catalysis and ozonization |
| CN1693225A (en) * | 2005-04-15 | 2005-11-09 | 北京交通大学 | Multiphase catalysis oxydation sewage treatment method |
-
2006
- 2006-06-16 CN CNB2006100469109A patent/CN100357193C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0397342A1 (en) * | 1989-05-09 | 1990-11-14 | Imperial Chemical Industries Plc | Catalysts |
| DE4431790A1 (en) * | 1994-09-08 | 1996-03-14 | Solvay Umweltchemie Gmbh | Removing bromate by=prod. formed during oxidative disinfection |
| CN1493399A (en) * | 2003-07-15 | 2004-05-05 | 浙江大学 | Catalyst for removing nitrate in water and its preparation method |
| CN1576244A (en) * | 2003-07-21 | 2005-02-09 | 中国科学院生态环境研究中心 | Reactor for efficient removing organic pollutanti in water by catalysis and ozonization |
| CN1693225A (en) * | 2005-04-15 | 2005-11-09 | 北京交通大学 | Multiphase catalysis oxydation sewage treatment method |
Non-Patent Citations (1)
| Title |
|---|
| 非均相催化氧化处理焦化废水 邹东雷等.化工环保，第25卷第5期 2005 * |
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|---|---|
| CN1872730A (en) | 2006-12-06 |
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