Compound denitrification agent

A chemical and denitrification technology, applied in water/sludge/sewage treatment, biological water/sewage treatment, chemical instruments and methods, etc. Effect

Inactive Publication Date: 2019-04-12
天津市雍泉水务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Glucose is the cheapest but produces a large amount of mud. Sodium acetate and acetic acid are more effective but more expensive. Methanol is a dangerous chemical. Many factories do not have storage conditions. Ethanol is also a dangerous chemical and is more expensive.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] At present, the discharge standard of Tianjin sewage treatment plant has higher requirements for total nitrogen, which has been reduced from 15 mg / L to 10 mg / L. Therefore, the requirements for denitrification agents have also been increased accordingly.

[0030] The invention provides a compound denitrification agent, which comprises the following raw materials in parts by weight: 15 parts of modified zeolite powder, 5 parts of modified bentonite, 11 parts of Thiobacillus denitrification bacteria liquid, 7 parts of Steineria liquid, 5 parts of nitrite reductase enzyme liquid, 13 parts of carbon source liquid, 11 parts of ferric sulfate, 5 parts of ethanol, and 10 parts of fruit juice fermentation liquid.

[0031] Wherein, the carbon source liquid is a mixed liquid of glucose and straw fermentation liquid, and the weight ratio of the glucose to the straw fermentation liquid is 1:4.

[0032] The preparation method of the above-mentioned modified zeolite powder is as follo...

Embodiment 2

[0039] A compound denitrification agent, comprising the following raw materials in parts by weight: 15 parts of modified zeolite powder, 5 parts of modified bentonite, 5 parts of Thiobacillus denitrifica bacteria liquid, 10 parts of Steineria liquid, nitrous acid reduction 10 parts of enzyme liquid, 10 parts of carbon source liquid, 7 parts of iron sulfate, 8 parts of ethanol, 4 parts of fruit juice fermentation liquid.

[0040] Wherein, the carbon source liquid is a mixed liquid of glucose and straw fermentation liquid, and the weight ratio of the glucose to the straw fermentation liquid is 1:4.

[0041] The preparation method of the above-mentioned modified zeolite powder is as follows: heat the zeolite powder for ball milling, add 6.8% NaCl solution dropwise to the reaction kettle at a rate of 1mL / s, add dropwise for 5 hours, and at the same time keep the temperature at 30°C at a speed of 200r / min Shake in a water-bath shaker for 10 hours, dry and grind to obtain modified z...

Embodiment 3

[0048] A compound denitrification agent, comprising the following raw materials in parts by weight: 13 parts of modified zeolite powder, 7 parts of modified bentonite, 9 parts of Thiobacillus denitrifica bacteria liquid, 8 parts of Steineria liquid, nitrous acid reduction 6 parts of enzyme liquid, 12 parts of carbon source liquid, 10 parts of iron sulfate, 6 parts of ethanol, 7 parts of fruit juice fermentation liquid

[0049] Wherein, the carbon source liquid is a mixed liquid of acetic acid and straw fermentation liquid, and the weight ratio of the acetic acid to the straw fermentation liquid is 1:4.

[0050] The preparation method of the above-mentioned modified zeolite powder is as follows: heat the zeolite powder for ball milling, drop 6.4% NaCl solution into the reaction kettle at a rate of 1.5mL / s, add dropwise for 5.2 hours, and at the same time rotate at 170r / min at 33 °C in a constant temperature water-bath shaker for 12 hours, dried and ground to obtain modified zeoli...

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PUM

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Abstract

The invention provides a compound denitrification agent, and relates to the field of environmental protection. The compound denitrification agent comprises the following raw materials by weight: 10 to15 parts of modified zeolite powder, 5 to 9 parts of modified bentonite, 5 to 11 parts of a thiobacillus denitrificans liquid, 7 to 10 parts of a mycobacterium szulgai liquid, 5 to 10 parts of a nitrite reductase liquid, 10 to 13 parts of a carbon source liquid, 7 to 11 parts of ferric sulfate, 5 to 8 parts of ethanol and 4 to 10 parts of a fruit juice fermentation liquid. According to the invention, through combination of chemical agents and biological enzyme agents, denitrification purification of industrial wastewater is realized; meanwhile, through compound selection of a carbon source, the yield of sludge can be flexibly adjusted according to different user conditions.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a compound denitrification agent. Background technique [0002] During the production process of the factory, a large amount of industrial wastewater is often produced, which is rich in elements such as N and P, and these chemical trace elements are required for the reproduction of algae. The large-scale reproduction of algae will cause the lake water bloom and seawater The red tide has affected the survival of aquatic organisms such as fish. [0003] At the same time, the proliferation of algae will also reduce the number of other microorganisms that maintain water quality. Therefore, industrial wastewater and domestic sewage must be denitrified before discharge to reduce the impact of sewage discharge on the environment and aquatic organisms. [0004] A compound denitrification agent with the publication number CN103145206A, which consists of the following components by...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34
CPCC02F3/341C02F3/342
Inventor 李浩然王超柳昊
Owner 天津市雍泉水务有限公司
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