CN204490573U - A kind of dry coke quenching coking dense salt waste water after-treatment system - Google Patents
A kind of dry coke quenching coking dense salt waste water after-treatment system Download PDFInfo
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- CN204490573U CN204490573U CN201520165560.2U CN201520165560U CN204490573U CN 204490573 U CN204490573 U CN 204490573U CN 201520165560 U CN201520165560 U CN 201520165560U CN 204490573 U CN204490573 U CN 204490573U
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- catalysis reactor
- waste water
- electric catalysis
- ozone
- tail gas
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Abstract
A kind of dry coke quenching coking dense salt waste water after-treatment system, comprises ozone storage tank, equalizing tank, ozone surge tank, sump pump, electric catalysis reactor, tail gas treatment device and separator; Electric catalysis reactor is connected with ozone storage tank by ozone surge tank; Equalizing tank is connected with electric catalysis reactor by sump pump, and the water port bottom electric catalysis reactor is connected with separator, and the venting port on electric catalysis reactor top is connected with tail gas treatment device.It is homogeneous that first coking after biochemical treatment dense salt waste water enter equalizing tank, then squeeze in electric catalysis reactor with sump pump and carry out electrocatalytic reaction, in electric catalysis reactor, ozone is passed into by ozone storage tank in reaction process, tail gas after process discharges after tail gas treatment device process, purify up to standard after waste water discharged by separator.This system is by the synergy of electrolysis, catalysis, oxidation, and process at normal temperatures and pressures, technical process is simple.
Description
Technical field
The utility model relates to the treatment system of the tail water after the process of a kind of dry coke quenching coking dense salt wastewater biochemical, belongs to technical field of sewage.
Background technology
Coking chemical waste water is the waste water produced in the Coal Chemical Industry production processes such as coal Pintsch process, gas purification, coke chemicals reclaim and refine.Along with differences such as raw coal, pyrolysis temperature and chemical by-product ways of recycling, great changes will take place for the composition of waste water, coking chemical waste water complicated component, and Pollutant levels are high, is a kind of poisonous unmanageable trade effluent.In coking chemical waste water, organic pollutant is based on phenols, accounts for the half of total amount of organic, is secondly the organic pollutants such as biphenyl, pyridine, indoles and quinoline; Inorganic pollutant is with NH
3-N, CN
-, S
2-and SCN
-be main, moreover the poisonous Recalcitrant chemicals (as condensed-nuclei aromatics, PCBs etc.) in coking chemical waste water can produce serious harm to HUMAN HEALTH.Therefore, the process of coking chemical waste water is the Tough questions that every country faces.
At present, namely coking chemical waste water great majority discharge after being through dephenolize pre-treatment, biochemical treatment, but the indexs such as chemical oxygen demand (COD) (COD), colourity generally exceed standard, and do not reach the emission standard of national requirements.Membrane separation process, photochemical catalytic oxidation and active carbon adsorption etc. effectively can remove the recalcitrant substance in biochemical treatment water outlet, but these methods exist, and construction investment is large, fouling membrane, high in cost of production problem, and application is restricted.
Therefore, seeking technique coking simple, with low cost dense salt waste water post-processing technology is current coking dense salt wastewater treatment problem in the urgent need to address.
Summary of the invention
For the present situation of the dense salt wastewater processing technology of current coking, the utility model proposes a kind of cost low, be convenient to realize, treatment effect obvious dry coke quenching coking dense salt waste water after-treatment system.
Dry coke quenching coking of the present utility model dense salt waste water after-treatment system, by the following technical solutions:
This system, comprises ozone storage tank, equalizing tank, ozone surge tank, sump pump, electric catalysis reactor, tail gas treatment device and separator; Electric catalysis reactor is connected with ozone storage tank by ozone surge tank; Equalizing tank is connected with electric catalysis reactor by sump pump, and the water port bottom electric catalysis reactor is connected with separator, and the venting port on electric catalysis reactor top is connected with tail gas treatment device.
The connecting pipeline of sump pump and electric catalysis reactor is provided with valve.
The connecting pipeline of electric catalysis reactor and ozone surge tank is provided with valve.
The bottom of electric catalysis reactor is provided with gas distributor.
It is homogeneous that first coking after biochemical treatment dense salt waste water enter equalizing tank, then squeeze in electric catalysis reactor with sump pump and carry out electrocatalytic reaction, in electric catalysis reactor, ozone is passed into by ozone storage tank in reaction process, tail gas after process discharges after tail gas treatment device process, purify up to standard after waste water discharged by separator.
The utility model less investment, efficiency is high, and by the synergy of electrolysis, catalysis, oxidation, process at normal temperatures and pressures, technical process is simple; After process, COD is down to 35mg/L by 430mg/L, and clearance can reach more than 91%.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model dry coke quenching coking dense salt waste water after-treatment system.
In figure: 1, ozone storage tank, 2, equalizing tank, 3, ozone surge tank, 4, sump pump, 5, valve, 6, positive electrode, 7, negative potential, 8, electric catalysis reactor, 9, gas distributor, 10, power supply, 11, tail gas treatment device, 12, tail gas treatment device, 13, separator.
Embodiment
As shown in Figure 1, dry coke quenching coking of the present utility model dense salt waste water after-treatment system, comprises ozone storage tank 1, equalizing tank 2, ozone surge tank 3, sump pump 4, electric catalysis reactor 8, gas distributor 9, tail gas treatment device 11, tail gas treatment device 12 and separator 13.Electric catalysis reactor 8 is existing general-purpose equipment, and be provided with positive electrode 6 and negative potential 7 in it, positive electrode 6 is connected with external power source 10 with negative potential 7.The bottom of electric catalysis reactor 8 is provided with gas distributor 9, and this gas distributor 9 is connected with ozone storage tank 1 by ozone surge tank 3.Equalizing tank 2 is connected with electric catalysis reactor 8 by sump pump 4, and sump pump 4 and the connecting pipeline of electric catalysis reactor 8 are provided with valve 5.The bottom discharge mouth of electric catalysis reactor 8 is connected with separator 13, and upper air vent is connected with tail gas treatment device 11 and tail gas treatment device 12.Two tail gas treatment devices are set and can improve processing efficiency and effect.Connecting pipeline between electric catalysis reactor 8 and ozone surge tank 3 is also provided with valve (not shown in FIG.).
First the dense salt waste water of coking after biochemical treatment enter equalizing tank 2, after equalizing tank 2 is homogeneous, open valve 5, squeeze in electric catalysis reactor 8 with sump pump 4 and carry out electrocatalytic reaction, ozone is passed into through ozone surge tank 3 and by the adjustment of valve to in the electric catalysis reactor 8 of gas distributor 9 by ozone storage tank 1 in reaction process, and the positive electrode 6 controlled with power supply 10 and negative potential 7 carry out concerted catalysis oxidizing reaction, the tail gas produced in reaction process enters tail gas treatment device 11 and tail gas treatment device 12, discharges after treatment; Purify up to standard after waste water enter separator 13, process rear discharge by separator 13.
Processing parameter when whole system is run is: homogeneous rear adjustment pH is 3, and the intake as oxidant, ozone is 5.0g/ hour, catalyst cupport type potassium permanganate add-on 4g/L, and in 80 minutes reaction times, voltage is 12V, and current density is 50mA/cm
2.After treatment and purification, COD is down to 35mg/L by 430mg/L, and clearance is 91.8%.
Claims (4)
1. a dry coke quenching coking dense salt waste water after-treatment system, comprises ozone storage tank, equalizing tank, ozone surge tank, sump pump, electric catalysis reactor, tail gas treatment device and separator; It is characterized in that, electric catalysis reactor is connected with ozone storage tank by ozone surge tank; Equalizing tank is connected with electric catalysis reactor by sump pump, and the water port bottom electric catalysis reactor is connected with separator, and the venting port on electric catalysis reactor top is connected with tail gas treatment device.
2. dry coke quenching coking according to claim 1 dense salt waste water after-treatment system, is characterized in that, the connecting pipeline of described sump pump and electric catalysis reactor is provided with valve.
3. dry coke quenching coking according to claim 1 dense salt waste water after-treatment system, is characterized in that, the connecting pipeline of described electric catalysis reactor and ozone surge tank is provided with valve.
4. dry coke quenching coking according to claim 1 dense salt waste water after-treatment system, it is characterized in that, the bottom of described electric catalysis reactor is provided with gas distributor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520165560.2U CN204490573U (en) | 2015-03-24 | 2015-03-24 | A kind of dry coke quenching coking dense salt waste water after-treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520165560.2U CN204490573U (en) | 2015-03-24 | 2015-03-24 | A kind of dry coke quenching coking dense salt waste water after-treatment system |
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|---|---|
| CN204490573U true CN204490573U (en) | 2015-07-22 |
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| CN201520165560.2U Active CN204490573U (en) | 2015-03-24 | 2015-03-24 | A kind of dry coke quenching coking dense salt waste water after-treatment system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104724793A (en) * | 2015-03-24 | 2015-06-24 | 山东中移能节能环保科技股份有限公司 | Dry quenching coking strong salt wastewater post treatment process and system |
-
2015
- 2015-03-24 CN CN201520165560.2U patent/CN204490573U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104724793A (en) * | 2015-03-24 | 2015-06-24 | 山东中移能节能环保科技股份有限公司 | Dry quenching coking strong salt wastewater post treatment process and system |
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| GR01 | Patent grant |