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Sewage treating agent

A sewage treatment agent and sewage technology, applied in water/sewage treatment, biological water/sewage treatment, water/sewage multi-stage treatment, etc., can solve the problems of large energy consumption and increased treatment costs, and reduce energy consumption and demand Oxygen reduction effect

Inactive Publication Date: 2017-05-31
GUILIN SHIHUAN WASTE GAS TREATMENT EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Not only that, the traditional biological denitrification process, such as A / O method, A 2 Aeration in the nitrification stage such as the / O method usually consumes a lot of energy. In order to neutralize the acidity generated during the nitrification process, alkali needs to be added to neutralize it, which increases the treatment cost.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] After the sewage is pretreated by the coarse grid and the aeration grit chamber, it is treated in turn through the primary sedimentation tank, the biological tank and the secondary sedimentation tank. The biological tank includes an aerobic section and an anoxic section; The well flows into the aerobic section and the anoxic section at the same time, 60% is allocated to the anoxic section, and the remaining 40% is allocated to the aerobic section; section, the reflux rate is 40%, the remaining effluent enters the secondary settling tank for sedimentation and separation, and the effluent is discharged through the discharge port; the sewage treatment agent is added in the aerobic section, and the dosage is 5kg / ton of sewage, zeolite powder and persimmon The weight ratio of tannin was 1:0.5; the DO of the aerobic section was 0.8mg / L; the DO of the anoxic section was 0.2mg / L.

Embodiment 2

[0026] After the sewage is pretreated by the coarse grid and the aeration grit chamber, it is treated in turn through the primary sedimentation tank, the biological tank and the secondary sedimentation tank. The biological tank includes an aerobic section and an anoxic section; The well flows into the aerobic section and the anoxic section at the same time, 80% is allocated to the anoxic section, and the remaining 20% ​​is allocated to the aerobic section; section, the reflux rate is 50%, the remaining effluent enters the secondary settling tank for sedimentation and separation, and the effluent is discharged through the discharge port; the sewage treatment agent is added in the aerobic section, and the dosage is 0.5kg / ton of sewage, of which zeolite The weight ratio of powder and persimmon tannin is 3:1.8. The DO in the aerobic section was 1.0mg / L; the DO in the anoxic section was 0.5mg / L.

Embodiment 3

[0028] After the sewage is pretreated by the coarse grid and the aeration grit chamber, it is treated in turn through the primary sedimentation tank, the biological tank and the secondary sedimentation tank. The biological tank includes an aerobic section and an anoxic section; The well flows into the aerobic section and the anoxic section at the same time, 70% is allocated to the anoxic section, and the remaining 30% is allocated to the aerobic section; Section, the reflux rate is 45%, the remaining effluent enters the secondary settling tank for sedimentation and separation, and the effluent is discharged through the discharge port; the sewage treatment agent is added in the aerobic section, and the dosage is 2.5kg / ton of sewage, of which zeolite The weight ratio of powder and persimmon tannin was 1:1.8; the DO in the aerobic section was 0.9mg / L; the DO in the anoxic section was 0.4mg / L.

[0029] The sewage treatment agent and sewage treatment process of the embodiment of th...

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PUM

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Abstract

The invention discloses a sewage treating agent. The sewage treating agent consists of zeolite powder and persimmontannin, and the weight ratio of the zeolite powder to persimmontannin is (1 to 3): (0.5 to 1.8). The sewage treating agent is put into the aerobic stage of a biological tank. When the concentration of influent ammonia nitrogen is greater than 100 mg / L, the putting quantity of the sewage treating agent is 4 to 5 kg in one ton of sewage; when the concentration of influent ammonia nitrogen is greater than or equal to 50 mg / L and smaller than or equal to 100 mg / L, the putting quantity of the sewage treating agent is 3 to 4 kg in one ton of sewage; when the concentration of influent ammonia nitrogen is smaller than 50 mg / L, the putting quantity of the sewage treating agent is 0.5 to 5 kg in one ton of sewage. According to the sewage treating agent, ammonia nitrogen in the sewage can be quickly and effectively removed.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a sewage treatment agent. Background technique [0002] Nitrogen is a very important pollution factor in the water environment. With the development of petrochemical, food and pharmaceutical industries and the improvement of people's living standards, the nitrogen content in urban sewage, industrial sewage and garbage permeate has risen sharply. Nitrogen in sewage The main forms of nitrogen are molecular nitrogen, organic nitrogen, ammonia nitrogen, nitrite nitrogen and nitrate nitrogen, and in the untreated raw wastewater, organic nitrogen and ammonia nitrogen are the main forms of nitrogen; Ammonia nitrogen and nitrate nitrogen are the main forms of nitrogen in the effluent after secondary biochemical treatment. According to reports, urban domestic sewage, industrial wastewater, and livestock and poultry breeding wastewater all contain a large amount of ni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30C02F9/14
CPCC02F1/00C02F1/52C02F3/301C02F9/00C02F2301/08
Inventor 莫显坤
Owner GUILIN SHIHUAN WASTE GAS TREATMENT EQUIP
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