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

A technology for heavy metals and sludge, applied in sludge treatment, electrochemical sludge treatment, chemical instruments and methods, etc., can solve the problems of low electric field action efficiency, fast and effective removal of difficult sludge, etc.

Active Publication Date: 2016-12-14
宁波市海智材料产业创新研究院 +1
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  • Application Information

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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

Method used

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

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Embodiment Construction

[0022] Embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0023] figure 1 It is a schematic diagram of the principle of the embodiment of the present invention.

[0024] The reference signs are as follows: 1 is the anode, N1 indicates the direction of rotation of the anode, 2 is the cathode, N2 indicates the direction of rotation of the cathode, 3 is the spacer, W indicates the direction of entry of sludge containing electroplating wastewater, W1 indicates the direction of dehydration The direction of sludge discharge, S represents the water extracted from the sludge.

[0025] figure 1 It is a schematic diagram of the working principle of the present invention. As shown in the figure, a device for quickly removing heavy metals in sludge of the present invention includes a cathode 2 and an anode 1 that are used to form an electric field after applying a voltage and between the cathode 2 and the anode...

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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, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/00C02F11/12C02F101/20C02F101/18C02F103/16
CPCC02F11/006C02F11/121C02F2101/105C02F2101/18C02F2101/20C02F2103/16C02F2201/46115
Inventor 巨东英滨本修松浦宏昭李宁李建农
Owner 宁波市海智材料产业创新研究院
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