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Special phosphate removing agent for phosphorus-containing wastewater treatment

A technology of wastewater treatment and phosphorus removal agent, which is applied in water/sewage treatment, adsorption water/sewage treatment, oxidized water/sewage treatment, etc. To avoid problems such as large dosage, to achieve the effect of low cost, stable effect and good removal rate

Inactive Publication Date: 2018-10-26
PUYANG VOCATIONAL & TECHN COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Biological methods such as A / O, A 2 / O and UCT processes are mainly suitable for the treatment of low-concentration and organic phosphorus-containing wastewater. The biological phosphorus removal process has poor operational stability, strict operation, and is greatly affected by the temperature and pH of the wastewater.
Chemical methods mainly include coagulation precipitation method, crystallization method, ion exchange adsorption method, electrodialysis, reverse osmosis and other processes, which are mainly suitable for treating inorganic phosphorus-containing wastewater. Chemical precipitation method has become a commonly used phosphorus removal method due to its high phosphorus removal rate. It mainly refers to the method of using metal ions produced by iron salt, aluminum salt and lime to form insoluble phosphate precipitates with phosphate to remove phosphorus in wastewater. Most of them have the disadvantage of large dosage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A special phosphorus removal agent for phosphorus-containing wastewater treatment, which is composed of the following raw material components in parts by weight: 15 parts of α-alumina, 18 parts of activated carbon, 30 parts of red mud, 13 parts of polyacrylamide, and 18 parts of copper-loaded montmorillonite , 40 parts of polyferric sulfate, 30 parts of sodium peroxide.

[0016] Treat the simulated high-concentration phosphorous-containing wastewater with the special phosphorus-removing agent in Example 1, the phosphorus content is 1800 mg / L, and the addition amount of the special-purpose phosphorus-removing agent is 0.003% of the phosphorus-containing wastewater quality. The treatment process is as follows: take wastewater with a phosphorus content of 1800mg / L, add α-alumina, activated carbon, and red mud according to the above weight components, stir at room temperature and 150r / min for 4 minutes, then add sodium peroxide, load Copper montmorillonite was stirred at ro...

Embodiment 2

[0018] A special phosphorus removal agent for phosphorus-containing wastewater treatment, made of the following raw material components in parts by weight: 20 parts of α-alumina, 23 parts of activated carbon, 35 parts of red mud, 18 parts of polyacrylamide, and 18 parts of copper-loaded montmorillonite 40 parts, 40 parts of polyferric chloride, 35 parts of hydrogen peroxide.

[0019] Treat the simulated high-concentration phosphorous-containing wastewater with the special phosphorus-removing agent in Example 2, the phosphorus content is 2500 mg / L, and the addition amount of the special-purpose phosphorus-removing agent is 0.005% of the phosphorus-containing wastewater quality. The treatment process is as follows: take wastewater with a phosphorus content of 2500mg / L, add α-alumina, activated carbon, and red mud according to the above weight components, stir for 4 minutes at room temperature and at a speed of 150r / min, then add sodium peroxide, load Copper montmorillonite was s...

Embodiment 3

[0021] A special phosphorus removal agent for phosphorus-containing wastewater treatment, made of the following raw material components in parts by weight: 25 parts of α-alumina, 20 parts of activated carbon, 30 parts of red mud, 20 parts of polyacrylamide, and 23 parts of copper-loaded montmorillonite 18 parts of ferric chloride, 30 parts of ferrous sulfate, 12 parts of sodium hypochlorite, 25 parts of hydrogen peroxide.

[0022] The special phosphorus removal agent in Example 3 was used to treat simulated high-concentration phosphorus-containing wastewater, the phosphorus content was 3200 mg / L, and the addition amount of the special phosphorus removal agent was 0.005% of the phosphorus-containing wastewater quality. The treatment process is as follows: take wastewater with a phosphorus content of 3200mg / L, add α-alumina, activated carbon, red mud according to the above weight components, stir at room temperature and 150r / min for 4min, then add sodium peroxide, load Copper mo...

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Abstract

The invention discloses a special phosphate removing agent for phosphorus-containing wastewater treatment. The formula comprises the following raw material components according to the parts by weight:10-30 parts of Alpha-aluminum oxide, 8-25 parts of activated carbon, 15-45 parts of red mud, 5-25 parts of polyacrylamide, 15-25 parts of copper-bearing montmorillonite, 25-60 parts of ferric salt, and 15-50 parts of an oxidizing agent. The ferric salt is one or more of ferric sulfate, ferric chloride, ferrous sulfate, polyferric sulfate and polymerization ferric chloride. The oxidizing agent isone or more of sodium hypochlorite, hydrogen peroxide, and sodium peroxide. The phosphate removing agent has a high removal rate to high-concentration phosphorus in phosphorus-containing wastewater inthe presence of any forms of the phosphorus, and is rapid, efficient, lower in cost, and stable in effect. After detection, the phosphorus-containing wastewater in 800-3200 mg / L of a high-concentration is treated by the method, the phosphorus removal rate reaches 99% or more.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment in environmental protection, and relates to a phosphorus-removing agent specially used for phosphorus-containing wastewater treatment. Background technique [0002] Eutrophication of water body refers to that under the influence of human activities, a large amount of nutrients such as nitrogen and phosphorus required by organisms enter slow-flowing water bodies such as lakes, estuaries, and bays, causing algae and other plankton to multiply rapidly, and the dissolved oxygen in water bodies decreases. Deterioration of water quality, massive death of fish and other organisms. Phosphorus and nitrogen are the main elements that cause water eutrophication. Phosphorus is one of the key components. If phosphorus in the water exceeds a certain amount, it will quickly cause excessive algae reproduction, resulting in severe hypoxia in the water body, death of aquatic organisms, and deterioratio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/00C02F1/28C02F1/52C02F1/72C02F101/10C02F101/30
CPCC02F1/00C02F1/281C02F1/283C02F1/52C02F1/72C02F1/725C02F2101/105C02F2101/30
Inventor 王国庆方娜张丽丽张传周李晨赵元鑫杨玉娟原超毅
Owner PUYANG VOCATIONAL & TECHN COLLEGE
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