Waste water treatment method in process of waste water glass process casting used sand treatment

A technology of glass technology and used sand treatment, which is applied in ceramic wastewater treatment, water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problems of unsatisfactory use effect, high cost of wastewater treatment, complicated process, etc., and achieve Ideal use effect, low waste water treatment cost and simple process

Inactive Publication Date: 2019-02-01
中机铸材科技(福建)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The wastewater treatment method using the above technologies can certainly be used, but the process is

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0023] Example 1. Waste water treatment method in the process of waste water glass process foundry sand treatment. The sewage treatment agent is made by mixing the following raw materials by weight: 15 parts of bentonite, 5 parts of polyaluminum chloride, 1 part of aluminum sulfate, chlorinated 0.5 part of zinc, 0.5 part of chitosan, 1 part of sodium polyacrylate, 2 parts of starch; the viscosity average molecular weight of the sodium polyacrylate is 2000-4000, the molecular weight of the chitosan is 8000-12000, and the starch is Water-soluble; treatment steps are:

[0024] A. Quantitatively introduce the sewage in the sewage collection tank into the treatment tank;

[0025] B. The quantitative sewage in the treatment tank is adjusted by pH to make the pH value of the quantitative sewage greater than 8.5;

[0026] C. Then add sewage treatment agent to the treatment tank, and use 0.95 parts by weight of sewage treatment agent for every 1000 parts by weight of sewage;

[0027] D. Stir ...

Example Embodiment

[0030] Example 2, Waste water treatment method in the process of waste water glass process foundry sand treatment. The sewage treatment agent is made by mixing the following raw materials by weight: 40 parts of bentonite, 15 parts of polyaluminum chloride, 3 parts of aluminum sulfate, and chlorinated 1.5 parts of zinc, 1.5 parts of chitosan, 2.5 parts of sodium polyacrylate, 6 parts of starch; the viscosity average molecular weight of the sodium polyacrylate is 2000-4000, the molecular weight of the chitosan is 8000-12000, and the starch is Water-soluble; treatment steps are:

[0031] A. Quantitatively introduce the sewage in the sewage collection tank into the treatment tank;

[0032] B. The quantitative sewage in the treatment tank is adjusted by pH to make the pH value of the quantitative sewage greater than 8.5;

[0033] C. Then add sewage treatment agent to the treatment tank, and use 1.05 parts by weight of sewage treatment agent for every 1000 parts by weight of sewage;

[003...

Example Embodiment

[0037] Example 3, the waste water treatment method in the waste water glass process casting used sand treatment process, the sewage treatment agent is made by mixing the following raw materials by weight: 22 parts of bentonite, 10 parts of polyaluminum chloride, 2 parts of aluminum sulfate, chlorinated 1 part of zinc, 1 part of chitosan, 1.8 parts of sodium polyacrylate, 4 parts of starch; the viscosity average molecular weight of the sodium polyacrylate is 2000-4000, the molecular weight of the chitosan is 8000-12000, and the starch is Water-soluble; treatment steps are:

[0038] A. Quantitatively introduce the sewage in the sewage collection tank into the treatment tank;

[0039] B. The quantitative sewage in the treatment tank is adjusted by pH to make the pH value of the quantitative sewage greater than 8.5;

[0040] C. Then add sewage treatment agent into the treatment tank, and use 1 part by weight of sewage treatment agent for every 1000 parts by weight of sewage;

[0041] D. ...

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PUM

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Abstract

The invention discloses a waste water treatment method in a process of waste water glass process casting used sand treatment. A waste water treatment agent is prepared by mixing the following raw materials in parts by weight: 15-40 parts of bentonite, 5-15 parts of polyaluminum chloride, 1-3 parts of aluminum sulfate, 0.5-1.5 parts of zinc chloride, 0.5-1.5 parts of chitosan, 1-2.5 parts of sodiumpolyacrylate, and 2-6 parts of starch. The viscosity-average molecular weight of sodium polyacrylate is 2000-4000, the molecular weight of chitosan is 8000-12000, and starch is water-soluble. The method comprises the steps: introducing the waste water quantitatively into a treatment tank; adjusting the pH value of the waste water to be more than 8.5; adding 0.95-1.05 parts by weight of the sewagetreatment agent to per 1000 parts by weight of waste water; stirring for 10-30 min; carrying out static precipitation for 30-60 min, discharging flocs, and pumping out treated water for reuse; and after emptying, treating next batch of quantitative waste water. The process is relatively simple and the cost of waste water treatment is relatively low.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and relates to a waste water treatment method in the process of treating waste water glass process casting old sand. Background technique [0002] China is the largest casting production country in the world today. There are more than 20,000 foundry sites, and the annual consumption of water glass quartz sand is more than 30 million tons. A large amount of waste water glass process casting old sand is discharged, which pollutes the environment (water Glass sand contains alkali) and waste resources. At present, high-quality and low-cost recycling of waste water glass casting sand has been realized. Water consumption is large in the process of wet treatment of used foundry sand in the waste water glass process. Sewage is mainly generated by the silica gel falling off the surface of the waste foundry sand, with high concentration, turbidity and stability. Wastewater treatment methods spe...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F1/56
CPCC02F1/5263C02F1/56C02F2001/007C02F2103/12
Inventor 陈先富叶永肖旺钏
Owner 中机铸材科技(福建)有限公司
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