An electrolysis device for efficiently recovering heavy metal ions
A technology of heavy metal ions and electrolytic cells, applied in the direction of electrolytic components, electrolytic processes, cells, etc., can solve the problems of small metal electrolytic deposition area, complex operation and maintenance, and large cell volume, so as to facilitate collection, improve deposition efficiency, The effect of increasing the deposition area
Active Publication Date: 2011-12-21
深圳龙澄高科技环保股份有限公司
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Problems solved by technology
However, the cathode of this type of electrolysis device is mostly a two-dimensional flat plate structure, and the metal electrolytic deposition area of a single group of electrodes is small, resulting in low electrolysis efficiency and high energy consumption; while the electrolysis device composed of multiple sets of diaphragms and cathode and anode electrodes has a large tank volume. High manufacturing cost and complex operation and maintenance; generally, this type of device requires a high concentration of heavy metal ions in the wastewater, and the wastewater needs to be concentrated before electrolysis
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[0017] use Figure 1 to Figure 3 The structure of the electrolysis device disclosed by the present invention is explained. The electrolytic cell 1 is composed of a cell body 1a and an upper cover 1b; the bottom of the cell body 1a is conical, and is provided with a metal powder storage bucket 2 and butterfly valves 2a and 2b, the butterfly valve 2a is a normally open valve, and the butterfly valve 2b is a normally closed valve. The cathode 3 is a multi-dimensional network structure, supported by the cathode support 4 and placed in the tank 1a in a fixed shape, the cathode support 4 is a PVC pipe, and is provided with a plurality of symmetrically distributed high-pressure nozzles 4a with openings facing the cathode 3 (such as image 3 shown). The anion-exchange membrane module 6 is placed between the cathode 3 and the anode 5 to form the cathode chamber 3a and the anode chamber 5a; the anion-exchange membrane module 6 uses a PVC pipe 6a with fine pores as the skeleton, and is ...
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Abstract
An electrolytic device for efficiently recovering heavy metal ions disclosed by the present invention consists of an electrolytic cell, a cathode, a cathode support, an anode, an anion exchange membrane module, a deionized water inlet pipe, an anolyte outlet pipe, a catholyte outlet, an extraction (electrolysis) liquid storage tank and high pressure pump. The shape of the tank is cylindrical, the bottom is conical and there is a metal powder storage bucket. The cathode and the anion exchange membrane module are distributed in concentric circles; the anode is placed in the center of the electrolytic cell and surrounded by the anion exchange membrane module to form an anode chamber, and the outer periphery of the anion exchange membrane module, the cathode, and the inside of the electrolytic cell together form the cathode chamber. The cathode is a multi-dimensional mesh structure composed of stainless steel wires and supported by a cathode support (backwashing system) composed of PVC pipes. The entire device uses an online detection device to control the treatment and discharge of the heavy metal-containing liquid, which can realize the automation of the electrolysis process.
Description
technical field [0001] The present invention relates to an electrolytic recovery device for heavy metal ions, more precisely, relates to an electro-wet metallurgy device for recovering heavy metal ions and acetic acid / citric acid in the acetic acid / citric acid extract of municipal solid waste incinerator fly ash . Background technique [0002] The heavy metals in the fly ash of municipal solid waste incinerators are extremely harmful to the environment. Because the fly ash contains heavy metals such as lead, mercury, chromium, silver, cadmium, copper, manganese, tin, zinc, arsenic, etc., it is clearly designated as hazardous waste by the national standard (GB 18485-2001), and must be treated before final disposal. stabilization treatment. Heavy metals usually exist in the form of oxides. If not treated, they will enter the environment, enter the ecosystem with the ingestion of organisms, gather in the human food chain, and finally enter the human body, causing chronic poi...
Claims
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IPC IPC(8): C25C7/00
Inventor 张涉马辉文汪春霞卿惠广
Owner 深圳龙澄高科技环保股份有限公司