Cyanide-containing wastewater treatment system and method

A treatment system and technology for cyanide wastewater, applied in the directions of metallurgical wastewater treatment, multi-stage water treatment, water/sewage treatment, etc., can solve the problem that the CN- removal rate needs to be further improved, and achieve the effect of enhancing the removal effect and improving the recovery rate.

Inactive Publication Date: 2020-03-24
广州市真爱环保科技股份有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

This method can detoxify CN in copper-bearing gold ore cyanidation wastewater - for removal, but CN - The removal rate needs to be further improved

Method used

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  • Cyanide-containing wastewater treatment system and method
  • Cyanide-containing wastewater treatment system and method
  • Cyanide-containing wastewater treatment system and method

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Embodiment 1

[0080] This embodiment provides a treatment system for cyanide-containing wastewater, and the structural schematic diagram of the treatment system for cyanide-containing wastewater is as follows figure 1 As shown, it includes an ozone supply unit, an acid adjustment unit, a first sedimentation tank 2 and a second sedimentation tank connected in sequence.

[0081] The acid adjustment unit includes a static mixer 4, an air compressor 5 and an acid adjustment tank 1 provided with a stirring paddle, the top in the acid adjustment tank 1 is provided with a spray pipe, and the outlet of the static mixer 4 passes through the acid adjustment tank 1. The liquid inlet on the top of the tank 1 is connected to the spray pipe; the bottom of the acid adjustment tank 1 is provided with a gas distributor, and the gas outlet of the air compressor 5 is connected to the gas distributor through the air inlet at the bottom of the acid adjustment tank 1; the gas distributor The gas outlet is toward...

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Abstract

The invention provides a cyanide-containing wastewater treatment system and method. The cyanide-containing wastewater treatment system comprises an ozone supply unit, an acid regulation unit, a firstprecipitation device and a second precipitation device, the acid regulation unit, the first precipitation device and the second precipitation device are connected in sequence, the acid adjusting unitcomprises a mixing device, a gas conveying device and an acid adjusting device; a discharge hole of the mixing device is connected with a top liquid inlet of the acid adjusting device; a gas outlet ofthe gas conveying device is connected with a bottom gas inlet of the acid adjusting device; an oxidant adding port, a precipitant adding port and a pH regulator adding port are independently formed in the top of the first precipitation device respectively; a pH regulator adding opening is formed in the top of the second precipitation device; and the ozone supply unit is independently connected with bottom air inlets of the first precipitation device and the second precipitation device respectively. According to the method, Cu < 2 + > and Zn < 2 + > in the cyanide-containing wastewater can beeffectively recycled, CN <-> in the cyanide-containing wastewater is reduced to meet the requirements of Integrated Wastewater Discharge Standard, and good economic benefits are brought to enterprises.

Description

technical field [0001] The invention belongs to the field of sewage treatment and relates to a waste water treatment system and method, in particular to a cyanide-containing waste water treatment system and method. Background technique [0002] Cyanide-containing wastewater refers to wastewater containing cyanide. Cyanide is a compound with a strong complexing ability with hydrogen radicals. It is widely used in ore smelting, electroplating industry, pesticide synthesis and other industries, resulting in always producing A certain scale of cyanide-containing wastewater. [0003] Most of the inorganic cyanides are highly toxic substances. People and animals will be threatened with death if they come into contact with a small amount of cyanide in a short period of time. The water of the compound will also die. [0004] Mine cyanide-containing wastewater contains not only cyanide, but also a variety of heavy metal elements, such as Cu, Zn, Pb, etc. Due to the refractory natur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F101/18C02F103/16C02F103/34C02F101/20
CPCC02F9/00C02F2101/18C02F2103/16C02F2103/343C02F1/66C02F1/5281C02F2001/007C02F2301/08C02F1/78C02F2101/20
Inventor 刘春培
Owner 广州市真爱环保科技股份有限公司
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