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Method for treating waste water containing high concentration of organosilicon

A high-concentration wastewater treatment method technology, applied in the direction of heating water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve high treatment costs, large consumption of chemicals, and sludge volume Major problems, to achieve the effect of reducing operating costs and low costs

Active Publication Date: 2009-10-07
ZHEJIANG SHUANGLIANG SUNDA ENVIRONMENTAL PROTECTION CO LTD
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  • Claims
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Problems solved by technology

[0011] (1) The consumption of medicine is large and the processing cost is high;
[0012] (2) COD effluent exceeds the standard, and the amount of sludge is large;
[0014] There is also a reaction using Fenton’s reagent in China (Fenton’s reagent is composed of hydrogen peroxide and ferrous sulfate). But the cost of reagents is higher

Method used

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  • Method for treating waste water containing high concentration of organosilicon
  • Method for treating waste water containing high concentration of organosilicon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The total daily discharge of high-concentration organic silicon wastewater from an organic silicon company is 600 tons, and the highest CODcr is 30000mg / L. figure 2 The process flow is processed, and the structure of the continuous evaporative condenser used is shown in figure 1 .

[0042] A three-effect continuous evaporation condenser, including a first-effect evaporator 1 and a first-effect separation chamber 2 connected by a circulation pipeline, the first-effect evaporator 1 is provided with a raw steam inlet 3, and the raw steam inlet 3 is connected to a pressure regulator Valve, the rear of the first-effect separation chamber 2 is sequentially connected to the second-effect evaporator 4, the second-effect separation chamber 5, the third-effect evaporator 6, and the third-effect separation chamber 7, the second-effect evaporator 4 and the second-effect separation chamber 5 Connected by a circulation pipeline, the three-effect evaporator 6 is connected with the t...

Embodiment 2

[0063] The total daily discharge of high-concentration organic silicon wastewater from an organic silicon company is 1,500 tons, and the highest CODcr is 27,500 mg / L. figure 1 The process flow is processed, and the structure of the continuous evaporative condenser used is shown in figure 2 (workflow is the same as embodiment 1).

[0064] 1. Silicone high-concentration wastewater enters the sump after oil separation, and 6.1% lime is added for solidification to enhance the water permeability of the sludge filter press;

[0065] 2. Use the sludge pump to pump into the filter press for solid-liquid separation. After solid-liquid separation, the moisture content of the filter residue is 78%;

[0066] 3. Collect the filter residue and the filtrate separately, and add flocculant PAC (polyaluminum chloride) 180mg / L and coagulant PAM (polyacrylamide) 1.8mg / L to the filtrate, so that the waste water has not been removed, And the pollutants, metal cations and a small amount of silico...

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Abstract

The invention provides a new method for treating waste water containing high concentration of organosilicon. The method comprises: solidifying the waste water containing high concentration of organosilicon; conditioning sludge characteristic to increasing the press filtering water penetration of the sludge, and performing solid-liquid separation; adding flocculating agent into the filtrate to remove the residual salts in the waste water; performing sludge-water separation to the flocculated filtrate, and pumping the obtained supernatant into a condenser to cause the volatile pollutants and waste water to separate from the waste water in gas mode; removing all the salts in the waste water to improve the biodegradability of the waste water, and create conditions for the subsequent low concentration waste water treatment. The invention provides a high efficient, energy saving technical approach with low cost to the treatment of waste water containing high concentration of organosilicon; can recover useful resources such as salts; has great application prospect.

Description

(1) Technical field [0001] The invention relates to a method for treating waste water with high concentration of organic silicon. (2) Background technology [0002] Organosilicon material is a new synthetic chemical material based on organosilicon compound. It has been widely used in various sectors of the national economy such as military, aerospace, electronics, architectural decoration, and daily chemical industry. It plays a very important role. effect. Silicone products have become one of the fastest-growing varieties of new chemical materials, and are known as "industrial vitamins" or "industrial monosodium glutamate". The development level of the organic silicon industry reflects the industrialization level of a country to a certain extent, and it is also a new material that my country focuses on. At present, there are many organic silicon products, with as many as 10,000 varieties and grades, and more than 4,000 kinds are commonly used, which are roughly divided in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F1/40C02F1/52C02F1/04C02F3/30F23G7/00C02F101/30
Inventor 郑展望周联友徐甦舒婕周晓云
Owner ZHEJIANG SHUANGLIANG SUNDA ENVIRONMENTAL PROTECTION CO LTD
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