Water phosphorus control technology and phosphorus locking agent

A phosphorus-locking agent, water body technology, applied in water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., to achieve the effects of simple operation, cheap raw materials and chemicals, and elimination of eutrophication

Inactive Publication Date: 2010-04-28
路林茫
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In order to make up for and overcome the misunderstandings and deficiencies in the existing phosphorus removal technology and application, better solve the problem of eutrophication in water bodies, and control the outbreak of cyano

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A factory puts the acidic phosphating wastewater containing about 50mg / L phosphorus into the wastewater purification tank equipped with phosphorus locking agent (water plant sludge). The wastewater enters from the bottom and passes through the sludge layer, and the first reaction zone contacts phosphorus removal. After about 2 hours of reaction and precipitation, it is discharged from the top. The pH of the wastewater is 6.5-7, the phosphate phosphorus in the wastewater is less than 0.5mg / L, the pH of the second reaction zone is 8, the total zinc in the effluent is less than 1mg / L, and the total aluminum is less than 0.01mg / L. When the effluent is turbid or phosphorus rises, a part of sludge is discharged from the bottom of the tank, and the tank is replenished with water plant sludge and aluminum salt to improve the sludge coagulation performance.

[0029] Use a colorless and transparent PET mineral water bottle to take a bottle of waste water before and after treatment...

Embodiment 2

[0031] A domestic sewage treatment plant with AB method added 20g / m to the adsorption aeration tank 3 Alkali-activated phosphorus-locking agent (dry basis containing Al 2 o 3 About 50% of the 800-mesh bauxite powder), the sludge backflow, the total phosphorus of the factory water and the total phosphorus of the digested sludge supernatant are all less than 0.5mg / L, and the total aluminum is less than 0.01mg / L.

[0032] Use a colorless and transparent PET mineral water bottle to take two bottles of clarified domestic sewage. One of the bottles is added with bauxite powder and shaken intermittently for a day, and the two bottles are placed in a bright place outside. After more than ten days, it can be found that no bauxite is added. The water in the bottle with the bauxite powder is green and has a lot of green algae, but the water bottle with the bauxite powder is still clear.

Embodiment 3

[0034] The landscape lake water in a city park is polluted, the lake water is eutrophic, and the lake water turns green, which is unsightly. The measured lake water is about 10,000 cubic meters, and the phosphorus content is 0.1mg / L. After 10 vehicles of about 50 cubic meters of phosphorus-locking agent (water plant sludge with a water content of 98%) are evenly sprayed on the lake surface of 1 hectare, it is stirred intermittently by cruise ships and motor boats for a week. Adding 1000 kg of polyaluminum chloride (PAC) as a phosphorus-locking agent, the lake water became clear, no green algae was seen for more than a year, and the phosphorus concentration in the lake water was below 0.05 mg / L.

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PUM

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Abstract

The invention discloses water phosphorus control technology and a phosphorus locking agent, and relates to the environment-friendly field of water pollution control and ecological restoration technology. Inorganic salt and hydrolysate thereof capable of releasing aluminum ions and the phosphorus locking agent for other aluminum-containing active sludge are thrown into the water, the phosphorus locking agent can slowly release the aluminum ions, and the aluminum ions are combined with phosphorus dissolved in the water and released in the bottom mud to generate more insoluble aluminium phosphate to permanently lock the active phosphorus in the natural water bottom so that the active phosphorus cannot be utilized by algae and aquatic animals and plants and the aim of permanently eliminating eutrophication is achieved. The water phosphorus control technology of the invention has the advantages of simple operation, quick response, little sludge, stable and durable effect and broad application. The phosphorus locking agent of the invention has the advantages of cheap, broad and readily available raw materials and medicaments, low cost, and safety, has no toxicity or pollution, also can be used for treating pollution by using waste, and is convenient for popularization and application.

Description

Technical field [0001] The invention relates to the field of environmental protection, and belongs to water pollution control and ecological restoration technology, in particular to a water body phosphorus control technology and a phosphorus locking agent. Background technique [0002] Since the industrial revolution, the development and utilization of minerals has aggravated environmental pollution, and the increase and accumulation of nitrogen and phosphorus discharged from industrial and agricultural production have caused eutrophication of water bodies, causing explosive reproduction of algae and other plankton, causing fish and other biological abundance die. Polluted drinking water will pose a great threat to human health and even cause cancer. In recent years, many lakes, reservoirs and rivers in my country have been frequently polluted, including large-scale outbreaks of blue-green algae, frequent occurrence of red tides in coastal waters, and emergence of Enteromor...

Claims

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Application Information

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IPC IPC(8): C02F1/58
Inventor 路林茫
Owner 路林茫
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