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Device for cooperatively treating high-arsenic high-fluorine lead-zinc tailing wastewater

A high-fluorine lead-zinc, synergistic treatment technology, applied in mining wastewater treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. Achieve the effect of high recovery rate, high processing efficiency and simple process flow

Pending Publication Date: 2022-07-05
KUNMING UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, the existing patents and technologies can only remove arsenic or fluoride independently, and the technology of synergistic arsenic and fluorine removal has not been reported

Method used

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  • Device for cooperatively treating high-arsenic high-fluorine lead-zinc tailing wastewater
  • Device for cooperatively treating high-arsenic high-fluorine lead-zinc tailing wastewater
  • Device for cooperatively treating high-arsenic high-fluorine lead-zinc tailing wastewater

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: adopt the above-mentioned device to deal with high arsenic and high fluorine pollutants in the lead-zinc tailings wastewater of a certain lead-zinc factory, and the processing steps are as follows:

[0034] In the first step, the composition of lead-zinc mine tailings wastewater is: COD 51mg / L, total nitrogen 7.21mg / L, fluoride 2.45mg / L, arsenic 0.17mg / L, total cadmium: 0.01mg / L, hexavalent chromium: 0.004mg / L, total lead: 0.05mg / L, the influent water volume is 4m³ / h. The tailings wastewater enters the raw water tank 1 of the magnetic flocculation system, and the hydraulic retention time is 10 hours. The testing instruments set up in the raw water tank are used to detect various parameters of the tailings water, and the tailings water is homogenized and adjusted. The first conveying pipe 3 enters the coagulation tank 4, and 800mg / L polyaluminum chloride is added to the coagulation dosing tank 7. The concentration of the PAC solution reaches 10%, which has ...

Embodiment 2

[0040] Embodiment 2: Process high arsenic and high fluorine pollutants in the lead-zinc tailings wastewater of a certain lead-zinc factory, and the process steps are as follows:

[0041] In the first step, the composition of lead-zinc mine tailings wastewater is: COD 75mg / L, total nitrogen 11.23mg / L, fluoride 3.65mg / L, arsenic 0.48mg / L, total cadmium: 0.023mg / L, hexavalent chromium: 0.008mg / L, total lead: 0.09mg / L, the influent water volume is 6m³ / h. The tailings wastewater enters the raw water tank 1 of the magnetic flocculation system, and the hydraulic retention time is 12 hours. The detection instruments set up in the raw water tank are used to detect various parameters of the tailings water, and the tailings water is homogenized and adjusted. Enter the water inlet of the coagulation tank 4 through the original tank lift pump 2 and the first conveying pipe 3, and add 1200 mg / L polyaluminum chloride to the coagulation dosing tank 7, and the concentration of the PAC solution...

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Abstract

The invention discloses a device for simultaneously treating high-arsenic high-fluorine lead-zinc tailing wastewater. The device comprises a magnetic flocculation system, a multi-medium filtration system, an ultrafiltration system, a reverse osmosis system and a wastewater pool, the device provided by the invention can synergistically remove high-arsenic and high-fluorine pollutants in wastewater, and achieves the goals of comprehensive utilization of resources, energy conservation, emission reduction, protection of ecological environment and harmony of mine land; the process flow is simple, the recovery rate of the added flocculant is high, the occupied area of equipment is small and is only 1 / 2 of that of a traditional tailing water treatment process, and operation is convenient and fast.

Description

technical field [0001] The invention relates to a device for synergistically treating high-arsenic and high-fluorine lead-zinc tailings wastewater, in particular to a method for treating tailings water containing arsenic and fluorine elements, and belongs to the technical field of sewage treatment. Background technique [0002] The total reserves of lead and zinc mines in the country are 129.5692 million tons, which are widely distributed, but the reserves are mainly concentrated in Yunnan, Inner Mongolia, Gansu, Guangdong, Hunan and Guangxi. The wastewater containing a large amount of fine tailings particles produced in the process of beneficiation of lead-zinc ore has a serious impact on the environment, and the pollution of Pd, Cd and As is particularly serious. In natural waters, heavy metals are not easily released, but under acidic conditions, heavy metals are easily released. [0003] The mining industry will produce a large amount of waste water during mining and be...

Claims

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Application Information

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IPC IPC(8): C02F9/12C02F1/56C02F1/48C02F1/44B01D36/04C02F101/20C02F101/14C02F101/36C02F103/10
CPCC02F9/00C02F1/56C02F1/488C02F1/441C02F1/444B01D36/04C02F2101/20C02F2101/14C02F2101/36C02F2103/10C02F2209/08C02F2209/16
Inventor 郜华萍杨天宇杨友良
Owner KUNMING UNIV OF SCI & TECH