Heavy metal sewage treatment system and heavy metal sewage treatment method

Abstract

The invention discloses a heavy metal sewage treatment system and a heavy metal sewage treatment method. The heavy metal sewage treatment system comprises a water inlet pipe, a reaction tank, a transition tank and a drainage pipe, wherein the water inlet pipe communicates with the reaction tank, the transition tank is arranged around the outer wall of the reaction tank and communicates with the drainage pipe, a feeding control table is arranged in the middle of the reaction tank and is a cylindrical cement column, the bottom end of the feeding control table is fixed to the bottom of the reaction tank, the bottom of the reaction tank communicates with a sludge storage tank, the bottom of the sludge storage tank is connected to a sludge treatment system through a pipeline, a feeding device is arranged in the table top of the feeding control table, a stirrer is arranged on a column body, close to the tank bottom, of the feeding control table, and the stirrer rotates around the feeding control table. The heavy metal sewage treatment system is more convenient to put chemicals and more uniform in chemical distribution, heavy metal elements in sewage are effectively removed, impurities in sludge are less, and subsequent treatment and resource recovery are facilitated.

Description

technical field [0001] The invention relates to the neighborhood of sewage treatment, in particular to a heavy metal sewage treatment system and a heavy metal sewage treatment method. Background technique [0002] The heavy metal wastewater treatment methods commonly used in China, including legalization in lime and sulfidation, etc. Although these traditional treatment processes can remove heavy metals in wastewater, the treatment effect is not stable, and it is still difficult to ensure that the quality of clean water after treatment is stable. discharge, and will also produce secondary pollution, and it is also difficult to realize the recycling of heavy metals, which makes the subsequent sludge treatment difficult. Contents of the invention [0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a heavy metal sewage treatment system and a heavy metal sewage treatment method, which are more convenient to ...

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Problems solved by technology

[0002] The heavy metal wastewater treatment methods commonly used in China include legal and sulfuration methods in lime. Although these traditional treatment processes can remove heavy metals in wastewater,...

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