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Sewage treatment technology of chemical engineering plant

A sewage treatment and chemical plant technology, applied in the field of chemical plant sewage treatment process, can solve the problems of high treatment cost, unsatisfactory nitrogen and phosphorus removal effect, cumbersome process, etc., to improve removal efficiency, simplify sewage treatment steps, and increase resources The effect of utilization

Inactive Publication Date: 2019-01-18
陈志
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of high processing cost, cumbersome process and unsatisfactory nitrogen and phosphorus removal effect of the existing chemical plant sewage treatment process, and propose a chemical plant sewage treatment process

Method used

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  • Sewage treatment technology of chemical engineering plant

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Experimental program
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Effect test

Embodiment 1

[0021] A kind of chemical plant sewage treatment process that the present invention proposes comprises the following steps:

[0022] S1. Initial adjustment of the pH value of sewage: the sewage is stored in the sewage collection tank, and then transported from the sewage collection tank to the initial pH value adjustment tank, and then the pH value is adjusted in the initial pH value adjustment tank by sulfuric acid solution with a mass concentration of 20%. 5.5, the treatment time of sewage in the initial pH adjustment tank is 5 minutes;

[0023] S2. Primary sedimentation of sewage: The sewage treated by the primary pH adjustment tank is introduced into the primary sedimentation tank, and 3PPM polyferric sulfate and 10PPM polystyrene divinyl styrene resin microspheres are put into the primary sedimentation tank, and the water is mixed with 100r Stir for 20 minutes at a speed of 1 / min, then settle, transfer the settled clear water to the nitrogen and phosphorus removal tank, a...

Embodiment 2

[0029] A kind of chemical plant sewage treatment process that the present invention proposes comprises the following steps:

[0030] S1. Initial adjustment of the pH value of sewage: the sewage is stored in the sewage collection tank, and then transported to the initial pH value adjustment tank by the sewage collection tank, and then the pH value is adjusted in the initial pH value adjustment tank by a sulfuric acid solution with a mass concentration of 15%. 6. The treatment time of sewage in the initial pH adjustment tank is 7 minutes;

[0031] S2. Primary sedimentation of sewage: The sewage treated by the pH adjustment tank is introduced into the primary sedimentation tank, and 5PPM polyferric sulfate and 12PPM polystyrene divinyl styrene resin microspheres are put into the primary sedimentation tank, and the water is charged at 150r Stir for 30 minutes at a speed of 1 / min, then settle, transfer the settled clear water to the nitrogen and phosphorus removal tank, and dischar...

Embodiment 3

[0037] A kind of chemical plant sewage treatment process that the present invention proposes comprises the following steps:

[0038] S1. Initial adjustment of the pH value of sewage: the sewage is stored in the sewage collection tank, and then transported to the initial pH value adjustment tank by the sewage collection tank, and then the pH value is adjusted in the pH value initial adjustment tank by a sulfuric acid solution with a mass concentration of 10%. 6.5, the treatment time of sewage in the initial pH adjustment tank is 8 minutes;

[0039] S2. Primary sedimentation of sewage: The sewage treated by the primary pH adjustment tank is introduced into the primary sedimentation tank, and 6PPM polyferric sulfate and 15PPM polystyrene divinylbenzene resin microspheres are put into the primary sedimentation tank, and the water is mixed with 200r Stir for 40 minutes at a speed of 1 / min, then settle, transfer the settled clear water to the nitrogen and phosphorus removal tank, an...

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Abstract

The invention provides a sewage treatment technology of a chemical engineering plant. The sewage treatment technology comprises the following steps of S1, primary adjusting of the pH (potential of hydrogen) value of the sewage; S2, primary settling of the sewage: adding polyferric sulfate and polystyrenedivinylbenzene resin microspheres to settle, transferring the clean water into a nitrogen and phosphor removal tank, and discharging the sludge; S3, nitrogen and phosphor removal of the sludge: adding a nitrogen and phosphor removal agent, wherein the nitrogen and phosphor removal agent comprises the following raw materials of polyaluminum ferric silicate, aluminum potassium dodecahydrate, ceramic powder, hydroxyethyl-beta-cyclodextrin, minocycline hydrochloride, and carrageenan selenide; stirring and aerating, adding polyaluminum ferric silicate, settling, transferring the clean water into a pH final conditioning tank, and transferring the sludge into a sludge re-processing collectingtank; S4, post-treatment of the clean water: adjusting the pH value of the clean water, discoloring, filtering and detecting, and draining after the clean water is qualified in detection, so as to complete the sewage treatment technology of the chemical engineering plant. The sewage treatment technology has the advantages that the treatment cost is low, the operation is simple, the nitrogen and phosphor removal effect is good, and the utilization rate of resources is high.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a chemical plant sewage treatment process. Background technique [0002] The physical or chemical properties of pure water will cause the disease after use, and become waste water containing different types of impurities. Chemical wastewater is the process wastewater, cooling water, exhaust gas washing water, equipment and site washing water and other wastewater discharged in chemical production. If the waste water is discharged directly without treatment, it will cause different properties and different degrees of pollution of the water body, such as excessive nitrogen and phosphorus, high suspended solids, and high chemical oxygen demand (COD), which will endanger human health and affect industrial and agricultural production. . Therefore, the wastewater produced by chemical plants needs to be treated to meet the GB8978-1996 "Integrated Wastewater Discharge Standard"...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F101/10C02F101/16C02F101/20
CPCC02F1/5245C02F1/56C02F1/66C02F9/00C02F2001/007C02F2101/105C02F2101/16C02F2101/20C02F2301/08
Inventor 陈志
Owner 陈志
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