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Recycle system and recycle method of coked wastewater

A technology of coking wastewater and treatment methods, which is applied in chemical instruments and methods, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc., can solve difficult and high-cost problems, reduce treatment costs, improve The effect of wastewater recovery

Inactive Publication Date: 2012-07-04
KAILUAN GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still problems such as difficulty and high cost in reusing coking wastewater after treatment

Method used

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  • Recycle system and recycle method of coked wastewater
  • Recycle system and recycle method of coked wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1: After 280 t / h of coking wastewater is biochemically treated in the biochemical treatment section A, it is mixed with concentrated water and backwash water 28 t / h from the ultrafiltration equipment 12 in the advanced treatment section B in the coagulation reaction tank 7 Then directly enter the advanced treatment section B. Part of the effluent from the advanced treatment section B is sent to the A / O / O reaction tank 5 as dilution water, and the other part (about 110 t / h) directly enters the reclaimed water reuse section C. Reclaimed water such as advanced treatment effluent, circulating water effluent, desalination station reverse osmosis concentrated water, boiler effluent, etc. is mixed in the regulating tank 17 of reclaimed water reuse section C. After the mixed solution is subjected to lime + flocculation sedimentation and multi-media filtration, about 200 t / h of water is directly discharged to the circulating water system D, and the remaining about 100 t / ...

Embodiment 2

[0032] Example 2: After 280 t / h of coking wastewater is biochemically treated in the biochemical treatment section A, it is mixed with concentrated water and backwash water 28 t / h from the ultrafiltration equipment 12 in the advanced treatment section B in the coagulation reaction tank 7 Then directly enter the advanced treatment section B. Part of the water produced in the advanced treatment section B is sent to the A / O / O reaction tank 5 as dilution water, and the other part (about 110 t / h) directly enters the reclaimed water reuse section C. Reclaimed water such as advanced treatment effluent, circulating water effluent, desalination station reverse osmosis concentrated water, boiler effluent, etc. is mixed in the regulating tank 17 of reclaimed water reuse section C. After the mixed solution is subjected to lime + flocculation sedimentation and multi-media filtration, about 200 t / h of water is directly discharged to the circulating water system D, and the remaining about 10...

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Abstract

The invention discloses a recycle system and a recycle method of coked wastewater. The system consists of a biochemical treatment workshop section, a deep treatment workshop section and a recycled water recycling workshop section; the biochemical treatment workshop section adopts a nitration method and a denitrification method; the deep treatment workshop section adopts a sand filtering treatmentmethod, an ultra-filtering treatment method and a nano-filtering membrane treatment method; and the recycled water recycling workshop section comprises lime+flocculation treating, multi-medium filtering, filtering by active carbon, softening by a softener, ultra-filtering and performing two-level reverse osmosis treatment. The steps of membrane treating, wastewater deep purifying and chroma removing are added based on the normal treatment of the wastewater, so that the defect of the biochemical treatment is made up. The method is used for treating the recycled water such as nano-filtered water, circulating water wastewater, reverse osmosis concentrated water, boiler wastewater and the like, so that the wastewater yield is improved, and the treatment cost is reduced. The quality of the water discharged out of the recycle system meets the requirement of circulating cooling water, and the water can be used for compensating a water source of the circulating water, so that the problem thatthe coked wastewater is difficult in treating and recycling is solved.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment engineering, in particular to a recycling system and method for coking wastewater. Background technique [0002] Based on the current situation of water shortage in my country, solving the water problem in some cities with serious water shortage is an urgent problem at present, and the reclaimed water project is the only way to quickly solve the problem of water shortage. Therefore, reclaimed water projects will play an increasingly important role related to people's livelihood in my country, especially in water-scarce cities. Coal chemical projects consume a lot of water and discharge a lot of wastewater. It is understood that the production water of each ton of methanol is 10-15 tons, and the methanol plant with an annual output of 200,000 tons discharges hundreds of tons of wastewater per hour; a set of annual production of 180,000 tons of synthetic ammonia and 300,000 tons of ure...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
Inventor 张文学曹玉忠徐贺明李建华王亚涛李国忠谷志强梁刚郭学华
Owner KAILUAN GRP
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