Chemical phosphorus removal medicament adding device for sewage treatment

Abstract

The invention relates to a chemical phosphorus removal medicament adding device for sewage treatment. The device comprises a chemicals adding host machine, a chemicals storage tank and a chemicals conveying pipe connecting the chemicals adding host machine and the chemicals storage tank, wherein the chemicals adding host machine comprises a motor, a main shaft hood and a main shaft which is connected to the motor and placed in the main shaft hood; a spiral impeller is arranged at the lower end of the main shaft, the motor output end is connected with a host machine installation base and is fixed on a pool wall through a frame, the lower end of the main shaft hood is open and the upper end of the main shaft hood is fixedly connected with the host machine installation base in an airtight manner, so that the inner cavity of the main shaft hood becomes a chamber with the upper end closed and the lower end open; a chemicals suction opening is arranged at the lower half section of the main shaft hood; both ends of the medicament conveying pipe are respectively connected with a chemicals outlet of the chemicals storage tank and the lower semi-section of the main shaft hood on the main shaft hood, and chemicals are correctly added through adjustment by virtue of a vacuum degree control valve and a dosage control valve. Different from conventional chemical phosphorus removal methods, the device has the advantages that the chemicals are directly added and the liquid chemicals exported by a plant is added, so that the system for preparing and conveying the liquid chemicals is omitted. The device is simple, convenient and reliable and has a high practical value.

Description

technical field [0001] The invention relates to auxiliary equipment in the sewage treatment process, in particular to a chemical phosphorus removal agent dosing device. Background technique [0002] Due to the extensive use of pesticides, chemical fertilizers and phosphorus-containing detergents, the content of nitrogen and phosphorus in water bodies has increased. Phosphorus is one of the main factors leading to eutrophication of water bodies, which leads to rapid reproduction of algae and plankton in rivers and lakes. Cause water quality to deteriorate, seriously endangering the living environment of human beings. my country's "Urban Wastewater Treatment Common Pollutants Discharge Standard" (GB18918-2002) clearly stipulates that since January 1, 2006, the first-level A discharge standard for the total phosphorus index of sewage treatment plants is 0.5mg / L. Therefore, Phosphorus removal is necessary in sewage treatment. [0003] There are mainly two methods of phosphorus ...

AI Technical Summary

Problems solved by technology

This kind of dosing device has a huge system and complex operation. If there is a failure in one place, the system will stop working, which will bring trouble to the normal phosphorus removal.

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