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Device and method for simultaneously recycling heavy metal in wastewater of electroplating industrial park and treating sludge and sewage in park

An industrial park and simultaneous processing technology, applied in the field of bioelectrochemistry, can solve problems such as difficult recovery of heavy metals, and achieve the effects of stable power output, expanded configuration, strong stability and anti-interference ability

Active Publication Date: 2017-11-17
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the technical problem that the existing microbial fuel cell treatment method for electroplating wastewater is difficult to recover heavy metals, and provides a device and method for recovering heavy metals in electroplating industrial park wastewater and simultaneously treating park sludge sewage

Method used

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  • Device and method for simultaneously recycling heavy metal in wastewater of electroplating industrial park and treating sludge and sewage in park

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specific Embodiment approach 1

[0021] Specific embodiment 1: The device for recovering heavy metals in wastewater from electroplating industrial parks and simultaneously treating sludge wastewater in the park includes a first biological anode chamber 1, a biological cathode chamber 2, a precipitation zone 3, and a chemical cathode chamber 4 arranged in sequence. And the second bioanode compartment 5; also includes two external storage appliances or appliances 6; the first bioanode compartment 1 and the biocathode compartment 2 are separated by a proton exchange membrane, and the biocathode compartment 2 and the precipitation zone 3 are used between The anion exchange membrane is separated, the precipitation zone 3 and the chemical cathode chamber 4 are separated by a cation exchange membrane, and the chemical cathode chamber 4 and the second biological anode chamber 5 are separated by a proton exchange membrane; the first biological anode chamber 1 is provided with a Chamber vent 1-1, a graphite brush electro...

specific Embodiment approach 2

[0022] Second embodiment: This embodiment is different from the first embodiment in that: the first bioanode chamber 1 is a cuboid or a cylinder; the biocathode chamber 2 is a cuboid or a cylinder; the chemical cathode chamber 4 is a cuboid or a cylinder; The two bioanode chambers are cuboid or cylindrical; the others are the same as the first embodiment.

[0023] The rectangular parallelepiped electrode chamber has a regular structure and simple preparation, which is convenient to arrange neatly in groups and batches; the advantage of the cylindrical electrode chamber is that it can reduce the dead zone range generated in the corner of the electrode chamber and make the liquid concentration in the electrode chamber even. The configuration of the precipitation zone 3 is suitable and convenient.

specific Embodiment approach 3

[0024] Specific embodiment three: This embodiment is different from specific embodiment one or two in the bottom of the first bioanode chamber 1, the biocathode chamber 2, the precipitation zone 3, the chemical cathode chamber 4 and / or the second bioanode chamber 5. A magnetic stirrer is provided or a stirrer is added in the room; the others are the same as the first or second embodiment.

[0025] The agitator is used to enhance the mixing of liquids in each chamber and reduce the inhibition of microbial activity caused by the accumulation of local substances.

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Abstract

The invention relates to a device and a method for simultaneously recycling heavy metal in wastewater of an electroplating industrial park and treating sludge and sewage in the park, relates to a method for simultaneously recycling heavy metal and treating sludge and sewage, and aims to solve the technical problem that the existing method for processing electroplating wastewater by microbial fuel cells is difficult to recycle heavy metal. The device comprises a first biological anode chamber, a biological cathode chamber, a sedimentation area, a chemical cathode chamber and a second biological anode chamber which are sequentially arranged; the device also comprises an external electric storage device or an electric appliance; each chamber is provided with a graphite brush electrode, a vent hole and a water outlet hole; in addition to the graphite brush electrode of the chemical cathode chamber, the graphite brush electrodes of other chambers are provided with functional bacteria, the electrodes are connected through the electric storage device or the electric appliance into a closed loop. The method comprises the following steps of putting sludge in the first biological anode chamber and the second biological anode chamber and sealing, putting a cathode medium into the biological cathode chamber, adding the electroplating wastewater into the chemical cathode chamber, and adding clear water to the sedimentation area; performing aeration in the biological cathode chamber and replacing the cathode medium, sludge and electroplating wastewater timely to complete the treatment.

Description

Technical field [0001] The invention relates to a method for recovering heavy metals and simultaneously processing sludge sewage, belonging to the field of bioelectrochemistry, in particular to a method for realizing the recovery of heavy metals in electroplating wastewater in an electroplating industrial park, while realizing the resource and stabilization of sludge and simultaneously generating electricity. Background technique [0002] Due to the large amount of pollution in the electroplating industry, in order to protect the environment and facilitate management, all provinces and cities have concentrated electroplating enterprises to form a unified operation and management of electroplating industrial parks. A large amount of wastewater generated during the operation of the electroplating plant comes from various tank liquids and water that are caused by electroplating pre-treatment, coating rinsing, post-treatment, washing the workshop floor, plating tank leakage, or improp...

Claims

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Application Information

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IPC IPC(8): C02F3/00C25C7/00C02F101/20C02F101/22C02F103/16
CPCC02F3/005C02F2101/20C02F2101/22C02F2103/16C02F2201/46C25C7/00
Inventor 赵庆良于航梁柱元董全胜姜珺秋王琨
Owner HARBIN INST OF TECH
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