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Sewage biological purification agent

A sewage biological and purifying agent technology, applied in biological water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. problems, to achieve the effect of improving settling performance, preventing sludge loss and improving flocculation performance

Inactive Publication Date: 2016-01-27
严兴扬
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the back end of the reactor, since the easily biodegradable substances have been fully degraded, the concentration of substrates available to microorganisms is reduced, the activity of microorganisms is deteriorated, and the degradation ability is deteriorated.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A biological purification agent for sewage, comprising the following components in parts by weight: 80 parts of diatomaceous earth, 10 parts of biological growth stimulator (a mixture of lanthanum chloride and ferric chloride in a weight ratio of 1:5), 90 parts of biological nutrient parts (a mixture of glucose and acetate in a weight ratio of 10:50, the weight of glucose and acetate is based on the weight of carbon element);

[0018] Preparation:

[0019] (1) Lanthanum chloride and ferric chloride are mixed in a ratio of 1:5 by weight to form a biological growth stimulant, and 10 parts of biological growth stimulants are dissolved in water to make a total concentration of 0.1mol / L solution;

[0020] (2) immerse 80 parts of diatomaceous earth in the solution obtained in step (1) for 5 hours, dry at 80°C to constant weight, and then roast at 600°C for 5h to make the primary product of the purifying agent;

[0021] (3) the mixture of glucose and acetate in a weight rati...

Embodiment 2

[0024] A biological purification agent for sewage, comprising the following components in parts by weight: 60 parts of activated carbon, 20 parts of a biological growth stimulator (a mixture of cerium nitrate and ferric nitrate in a weight ratio of 1:5), 120 parts of a biological nutrient (glucose, A mixture of acetate and phosphate in a weight ratio of 1:10:5, the weight of glucose and acetate is based on the weight of carbon, and the weight of phosphate is based on the weight of phosphorus);

[0025] Preparation:

[0026] (1) Mix cerium nitrate and ferric nitrate in a ratio of 1:5 by weight to form a biological growth stimulator, dissolve 20 parts of the biological growth stimulant in water, and prepare a solution with a total concentration of 0.05mol / L;

[0027] (2) immerse 120 parts of activated carbon in the solution obtained in step (1) for 2 hours, dry at 100°C to constant weight, and then roast at 500°C for 3h to make the primary product of the purifying agent;

[002...

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PUM

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Abstract

The invention discloses a sewage biological purification agent comprising the following components, by weight: 50-100 parts of a carrier, 1-20 parts of a biological growth stimulant, and 10-150 parts of a biological nutritional agent. The carrier is any one or more selected from diatomaceous earth, activated carbon and zeolite powder. The biological growth stimulant is a mixture of a rare earth element compound and iron salt with a weight ratio of 1: (1-10). The biological nutritional agent is a mixture of glucose and acetate with a weight ratio of (1-20): (1-60), wherein the rights of glucose and sodium acetate are respectively calculated according to the weight of carbon element. The rare earth element compound is one or more selected from nitrate or chloride of lanthanum, cerium and rubidium. The sewage biological purification agent is used in the middle-late section of an active sludge treatment structure, and is used for improving active sludge activity and thus improving the purification effect.

Description

technical field [0001] The invention relates to a medicament for purifying sewage, in particular to a biological purifying agent for sewage. Background technique [0002] Activated sludge process is the mainstream method of wastewater purification. The process is simple, the operation and control are more convenient, and it is widely used in wastewater purification. With the development of modern industry in recent years, the wastewater containing various toxic organic pollutants is increasing, and it is very difficult to purify. Especially in the development of industrial parks, the collected wastewater has complex components and great differences in biochemical properties. Taking printing and dyeing comprehensive wastewater as an example, the wastewater contains not only easily biodegradable pollutants such as starch, but also difficult biodegradable pollutants such as dyes. In the activated sludge purification process (including traditional plug-flow activated sludge m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34
Inventor 严兴扬
Owner 严兴扬
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