Device for rapidly removing heavy metal in sludge and removal method of device

Abstract

The invention discloses a device for rapidly removing heavy metal in sludge and a removal method of the device. The device comprises a cathode and an anode which are used for forming an electric field after voltage is applied, and an electrolytic chamber located between the cathode and the anode; the cathode and the anode work in a manner of rotary electrodes; a rotary direction of the rotary electrode of the anode is a clockwise direction and the rotary direction of the rotary electrode of the cathode is an anticlockwise direction; the electrolytic chamber is pressurized by adopting one of a filter pressing manner of a sludge belt type filter press or a rotary circular disc manner of a sewage treatment biological rotary table process, so that the distance between the cathode and the anode is 1mm to 3mm; electrolyte in the electrolytic chamber is a digested solution of the sludge so that electrically deposited matters are concentrated in the digested solution.

Description

technical field [0001] The invention relates to the treatment technology of heavy metals in sludge in the field of environmental protection, in particular to an electrolysis / electrodialysis treatment device for removing heavy metals and cyanide and recovering phosphorus, in particular to a device for rapidly removing heavy metals in sludge and its removal method. Background technique [0002] There are about 15,000 electroplating factories in my country, and the average annual discharge of electroplating wastewater is as high as 4 billion tons, accounting for 1 / 6 of the total industrial wastewater discharge, but about 50% of the electroplating wastewater does not meet the national discharge standards. Therefore, how to remove or reduce the heavy metal content in electroplating sludge has become a problem that must be solved for municipal sludge disposal and resource utilization. At the same time, the annual output of municipal sludge in my country is about 60 million tons, ...

AI Technical Summary

Problems solved by technology

However, although electrodynamic restoration technology can be applied to the treatment of heavy metal-polluted water bodies, the research on this technology needs to be further improved when it comes to the removal of heavy metals in electroplating sludge and municipal sludge.

[0005] In the application process of electrodynamic repair technology, it is easy to be limited by factors such as low efficiency of electric field, so it is difficult to achieve rapid and effective removal from sludge

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