Biological phosphorus remover used in biochemical treatment of sewage

Abstract

The invention discloses a biological phosphorus remover used in biochemical treatment of sewage. The biological phosphorus remover comprises a shell (2) and a cover (1), wherein the cover (1) is connected with the shell (2) in a matching manner; a mixed liquid inlet (12) is formed in the shell (2); a sludge filter (3) is arranged inside an inner cavity of the shell (2); a cavity is formed between the sludge filter (3) and the shell (2); an inlet of an ejector (11) is formed inside the sludge filter (3); an outlet tube (4) of the ejector (11) is connected with an outlet (6) through a first valve (5), and is connected with a high-phosphorus water outlet (10) through a second valve (9); the ejector (11) is connected with a compressed air tube (8); a third valve (7) is mounted on the compressed air tube. The biological phosphorus remover is capable of ensuring a phosphorus removal effect, is free of residual sludge discharge, is free of phosphorus removal water treatment drug and is used in the biochemical treatment of sewage.

Description

technical field [0001] The invention relates to a phosphorus remover, in particular to a biological phosphorus remover used in sewage biochemical treatment. Background technique [0002] Phosphorus is an essential nutrient element for all living organisms, and at the same time it is the "culprit" of eutrophication in water bodies. In sewage, especially for domestic sewage, there is a large amount of phosphorus. Therefore, phosphorus needs to be removed during sewage treatment. [0003] At present, the methods for phosphorus removal are mainly biological phosphorus removal method and chemical precipitation phosphorus removal method. The so-called chemical precipitation phosphorus removal is to remove phosphorus in sewage (mainly in the form of orthophosphate) by forming chemical precipitation with aluminum salts and iron salts (such as aluminum phosphate or magnesium phosphate). The biological phosphorus removal is by setting anaerobic pond and aerobic pond in the treatment ...

AI Technical Summary

Problems solved by technology

[0004] The disadvantages of the chemical precipitation phosphorus removal method are: 1. It can only remove phosphorus in the form of orthophosphate and cannot remove phosphorus in other forms (such as organic phosphorus); 2. Need to add water treatment chemicals (such as aluminum salts and iron salts) ), and these agents will bring certain troubles to some special biological treatment processes (such as fouling of MBR membranes); 3. The treatment process is long and the investment is large

[0005] However, biological phosphorus removal also has the following disadvantages: a large amount of activated sludge needs to be lost, which affects the stability of the biological treatment system, and the concentration of activated sludge in the system decreases.

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