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Coking wastewater treatment device and coking wastewater posttreatment method

A technology of coking wastewater and treatment equipment, which is applied in the field of water treatment and wastewater treatment, can solve problems such as excessive chromaticity indicators, and achieve the effects of protecting the water environment and saving water resources

Inactive Publication Date: 2011-03-23
SHANGHAI WEILAI ENTERPRISE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a kind of coking wastewater treatment device, said coking wastewater treatment device should solve the problem of COD, total phenol, NH 3 ~N, chromaticity, ss and other indicators exceed the technical problems

Method used

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  • Coking wastewater treatment device and coking wastewater posttreatment method
  • Coking wastewater treatment device and coking wastewater posttreatment method
  • Coking wastewater treatment device and coking wastewater posttreatment method

Examples

Experimental program
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Effect test

Embodiment 1

[0036] like figure 1 , figure 2 As shown, (1) Put the coking wastewater A after ordinary biochemical treatment in the coking plant into the flocculation reaction tank 1, add 1000mg / L high-efficiency composite flocculant 6, and the aluminum sulfate and ferrous sulfate in the composite flocculant 6 are based on the ratio of 1: Prepare at a ratio of 1.5, then add 5mg / L coagulant 7 cationic polyacrylamide and 5g / L mineral adsorbent 8 fly ash, and mix for 15 minutes;

[0037] (2) The coking wastewater after the mixed reaction is connected to the flocculation sedimentation tank 2, and the sedimentation residence time is 1.5h;

[0038](3) The water outlet of the flocculation sedimentation tank 2 is pumped into the sand filter 4 by the booster pump 3;

[0039] (4) the sand filter 4 outlet is connected to the active carbon filter 5;

[0040] (5) After the activated carbon filter 5 is tested, discharge it up to the standard or connect it to a reuse pool for reuse.

[0041] Coking w...

Embodiment 2

[0045] like figure 1 , figure 2 As shown, (1) Put the coking wastewater A of a coking plant after ordinary biochemical treatment into the flocculation reaction tank 1, and add 1500 mg / L high-efficiency composite flocculant 6, and the aluminum sulfate and ferrous sulfate in the composite flocculant 6 are based on 1 : 4 ratio preparation, then add 7mg / L coagulation aid 7 cationic polyacrylamide and 5g / L mineral powder adsorbent 8 fly ash, mixed reaction 20min;

[0046] (2) The coking wastewater after the mixed reaction is connected to the flocculation sedimentation tank 2, and the settlement residence time is 2h;

[0047] (3) The water outlet of the flocculation sedimentation tank 2 is pumped into the sand filter 4 by the booster pump 3;

[0048] (4) the sand filter 4 outlet is connected to the active carbon filter 5;

[0049] (5) After the activated carbon filter 5 is tested, discharge it up to the standard or connect it to a reuse pool for reuse.

[0050] Coking wastewate...

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Abstract

The invention relates to a coking wastewater treatment device which comprises a flocculation reaction tank, wherein the flocculation reaction tank is connected with a flocculation settling pond, the flocculation settling tank is connected with a sand filter, and the sand filter is connected with an active carbon filter. A coking wastewater posttreatment method comprises the steps of: adding an efficient composite flocculating agent, a polymer coagulant aid and a mineral powder absorbing agent into the coking wastewater subjected to common treatment; regulating the pH value to be 8-9 with alkali, wherein the flocculation reaction settling time is 1-2.5h; and then carrying out sand leaching and active carbon filtration, wherein the effluent quality fully reaches the standard for emission or recycling. The COD (Chemical Oxygen Demand), the total phenol, the ammonia nitrogen, SS (Suspended Substances) and the chromaticity in the coking wastewater subjected to the treatment with the method are respectively reduced by above 80 percent, 90 percent, 60 percent, 90 percent and 95 percent; and by treating the coking wastewater according to the invention, the purposes of good effect, simple operation and convenience in management are achieved.

Description

Technical field: [0001] The invention relates to water treatment technology, in particular to waste water treatment, in particular to a coking waste water treatment device and a coking waste water post-treatment method. Background technique: [0002] Coking wastewater is a large amount of high-concentration organic wastewater mainly containing phenols produced in the process of coal coke, gas purification and coking product recovery. Its composition is complex and contains many aromatic organic substances, heterocyclic and polycyclic compounds that are difficult to biodegrade , is a kind of industrial wastewater that is difficult to treat. In the prior art, coking enterprises adopt common coking wastewater treatment methods, which include oil removal, phenol removal, ammonia distillation, and biological treatment. This method has a good treatment effect on phenol and cyanide, and the removal rate of phenolic substances can reach 99%. %, the concentration of phenol and cyani...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/02C02F9/04C02F1/52C02F1/66C02F1/28
Inventor 刘昕诸育德周国平
Owner SHANGHAI WEILAI ENTERPRISE
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