A composite coagulant for the treatment of watershed sewage with high phosphorus content

Abstract

The invention discloses a composite coagulant for treating sewage in river basins with high phosphorus content, and relates to the technical field of phosphorus removal composite coagulants, specifically, the composite coagulant ingredients include dilute sulfuric acid, phosphorus removal agent A, phosphorus removal agent B, Ammonia nitrogen remover A, ammonia nitrogen remover B, water, calcium hydroxyphosphate, activated carbon particles and sodium peroxide, the dilute sulfuric acid, phosphorus remover A, phosphorus remover B, ammonia nitrogen remover A, ammonia nitrogen remover B and water The content ratio between them is 2:1:1:1:1:4, and the content ratio among the calcium hydroxyphosphate, activated carbon particles and sodium peroxide is 1:2:1. The composite coagulant for wastewater treatment in high phosphorus-containing river basins organically combines biological phosphorus removal and chemical phosphorus removal, and part of chemical phosphorus removal can consume part of the phosphorus in wastewater through chemical reactions, and part of it can be used with dilute sulfuric acid solution, the phosphorus element is acidified to generate phosphate ions, which provide abundant phosphate ions for biological phosphorus removal.

Description

Technical field [0001] The present invention relates to a technical field phosphorus compound coagulant, in particular a high phosphorous compound coagulant sewage treatment basin. Background technique [0002] Sewage treatment is a very modern one focus of the project, due to the development of industry, more and more pollutants discharged into the natural environment, especially in water pollution and air pollution is most serious, is more and more sewage treatment the importance of the country, into the capital and technology of sewage treatment has become increasingly abundant in many wastewater treatment technology, the use of sewage treatment means application coagulant to the broader, often rich in substances in wastewater wherein the phosphorus compound is more common and phosphorus in the sewage. [0003] Existing coagulants and phosphorus in the wastewater for phosphorus to phosphorus purification, often ignoring the biological activity of wastewater treatment, use of b...

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Problems solved by technology

[0003] When the existing phosphorus removal coagulants are used to dephosphorize and purify phosphorus-containing wastewater, the biochemical activity of wastewater treatment is often ignored. Compared with chemical phosphorus removal, biological phosphorus removal technology is not widely used, and simple The method of using phosphorus accumulating bacteria for phosphorus removal is not applicable to all situations or volumes of wastewater. Biological phosphorus removal technology is mostly used in the treatment of phosphorus-containing wastewater in small-scale enterprises. The agent did not play a role in assisting the generation of phosphate ions, resulting in the biological phosphorus removal effect of phosphorus accumulating bacteria to be improved

[0004] A compound dephosphorization coagulant and treatment method for secondary effluent of sewage treatment plants disclosed in Chinese invention patent application publication CN101891287A method, although the production method is simple and the cost is low, it can effectively remove phosphorus and suspended matter, and the removal rate of phosphorus and turbidity is more than 30% higher than that of the commonly used polyaluminum chloride at present. However, it should be used in sewage The compound phosphorus removal coagulant and treatment method of the secondary effluent of the treatment plant did not solve the problems of how to make better use of biological phosphorus removal technology and how to improve the effect of biological phosphorus removal