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Treatment method of coking wastewater

A technology for coking wastewater and treatment methods, applied in chemical instruments and methods, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of high cost of biological methods and restrict application development, and achieve reduction of phenol and the effect of xylenol content

Inactive Publication Date: 2013-12-18
SUZHOU FUQINUO WATER TREATMENT EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high cost of biological method restricts its extensive application development

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0007] (1) Pretreatment of coking wastewater, passing through the natural sea sand filter material with a mesh number of 300; (2) Adding polyamide resin with a mesh number of 200 to the coking wastewater passing through the natural sea sand filter material, the weight of the polyamide resin 6.5wt% of the weight of coking wastewater; (3) slowly stir the wastewater for 40 minutes; (4) separate the polyamide resin from the wastewater after stirring; (5) add graphite powder, graphite The weight of the powder is 3.3wt% of the weight of the coking wastewater; (6) After standing for 6 hours, take the supernatant, which is the treated coking wastewater.

Embodiment 2

[0009] (1) Pretreatment of coking wastewater, passing through the natural sea sand filter material with a mesh number of 400; (2) Adding polyamide resin with a mesh number of 300 to the coking wastewater passing through the natural sea sand filter material, the weight of the polyamide resin It is 5.7wt% of the weight of coking wastewater; (3) slowly stir the wastewater for 60 minutes; (4) separate the polyamide resin from the wastewater after stirring; (5) add graphite powder, graphite The weight of the powder is 3.7wt% of the weight of the coking wastewater; (6) After standing for 6 hours, take the supernatant, which is the treated coking wastewater.

Embodiment 3

[0011] (1) Pretreatment of coking wastewater, passing through the natural sea sand filter material with a mesh number of 300; (2) Adding polyamide resin with a mesh number of 200 to the coking wastewater passing through the natural sea sand filter material, the weight of the polyamide resin 5.2wt% of the weight of coking wastewater; (3) slowly stir the wastewater for 80 minutes; (4) separate the polyamide resin from the wastewater after stirring; (5) add graphite powder and graphite to the wastewater after separation The weight of the powder is 3.5wt% of the weight of the coking wastewater; (6) After standing for 6 hours, take the supernatant, which is the treated coking wastewater.

[0012] Example 1 Example 2 Example 3 Phenol content (mg / L) 19 24 17 Total amount of xylenol (mg / L) 12 16 19

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PUM

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Abstract

The invention discloses a treatment method of coking wastewater. The treatment method comprises the following treatment steps: (1) pre-treating the coking wastewater and filtering by natural sea sand filtering material; (2) adding polyamide resin to the coking wastewater filtered by the natural sea sand filtering material, wherein the weight of the polyamide resin is 5.2-6.5wt% of the weight of the coking wastewater; (3) slowly stirring the wastewater for 40-80min; (4) separating the polyamide resin from the wastewater after the stirring step; (5) adding graphite powder into the wastewater after the separating step, wherein the weight of the graphite powder accounts for 3.3-3.7wt% of the weight of the coking wastewater; and (6) taking supernatant after standing for 6h, and the supernatant is treated coking wastewater. After the coking wastewater is treated by the method, the phenol content is decreased from 749mg / L to 17-24mg / L and the xylenol content is decreased from 232mg / L to 12-19mg / L.

Description

technical field [0001] The invention relates to a treatment method for waste water, in particular to a treatment method for coking waste water. Background technique [0002] Coking wastewater is the cooling, washing and other wastewater generated by coking enterprises when they produce coke, gas and other products. There are many toxic substances and refractory substances in these wastewaters, such as phenol, xylenol, ammonia nitrogen compounds, etc. These substances together constitute the main source of coking wastewater. How to effectively reduce the content of phenol and xylenol therein is a difficult problem in current research. Usually the industry uses biological methods to degrade and absorb harmful substances, while chemical methods have little effect. The high cost of the biological method restricts its development in a large number of applications. Contents of the invention [0003] Technical problem to be solved: high content of phenol and xylenol in coking...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/02C02F101/34
Inventor 吴彦
Owner SUZHOU FUQINUO WATER TREATMENT EQUIP
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