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Method and device for treating acid mine wastewater

A mine acid wastewater and hydrochloric acid technology, applied in mining wastewater treatment, flocculation/sedimentation water/sewage treatment, etc., can solve problems such as poor stability, inconvenient storage, hydrogen sulfide transportation cost and unfavorable application for safe use, and achieve simple operation methods , The effect of simple device structure and safe operation

Inactive Publication Date: 2012-06-27
ZIJIN MINING GROUP
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Problems solved by technology

Since these industries are far away from metal mines, factors such as the transportation cost and safe use of hydrogen sulfide are not conducive to its application in the field of mine water treatment
In addition, sodium hydrosulfide is also an option to replace hydrogen sulfide, but its stability is poor, it will deteriorate in dry air, and it is inconvenient to store. Therefore, the use of metal sulfide to produce hydrogen sulfide is a better choice for mine acid wastewater treatment process

Method used

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  • Method and device for treating acid mine wastewater
  • Method and device for treating acid mine wastewater

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Embodiment Construction

[0015] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0016] As shown in the figure, according to the water treatment dosing device proposed by the present invention, its dosing method is to prepare solid sodium sulfide in the sodium sulfide solution tank (1) according to the required concentration, and dilute the hydrochloric acid according to the required concentration. In the hydrochloric acid solution box (2). Fill the tube (7) with high-pressure air from the Venturi tube inlet (10), and check whether the pipeline of the dosing device is unblocked. Control the medicine regulating valve, successively let dilute hydrochloric acid solution and sodium sulfide solution flow into the medicine reactor (6) through the hydrochloric acid dosing port (4) and the sodium sulfide dosing port (5) respectively. Adjust the pressure of the air jet until the reactor solution can flow into the Venturi tube su...

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Abstract

The invention discloses a method and a device for treating acid mine wastewater. The device consists of a sodium sulfide solution box, a hydrochloric acid solution box, a drug reactor, a venture tube, a plurality of chemical industry valves and a plurality of corresponding pipelines, wherein a sodium sulfide solution adding port, a hydrochloric acid solution adding port and an air vent are arranged at the top of the drug reactor, a diluted hydrochloric acid solution adding port is arranged right above an automatically-flowing outlet at the bottom of the reactor, and the sodium sulfide solution adding port and the air vent are distributed at two sides of the top of the reactor. The device is simple in structure, the operation method is easy and convenient, and the operation is safe..

Description

1. Technical field [0001] The invention relates to the technical field of mine wastewater treatment, in particular to a method and device for treating acid mine wastewater. 2. Background technology [0002] In order to meet the needs of the rapid development of my country's social economy, a large number of mining resources have produced a large amount of acid wastewater containing heavy metal ions. In mine acid wastewater treatment technology, sulfide precipitation method is widely used in mining enterprises because of its simple process, cheap chemicals, insoluble metal sulfides in acid and alkali, and comprehensive recovery of valuable metals. In this treatment process, sodium sulfide, calcium sulfide, barium sulfide, sodium hydrosulfide, hydrogen sulfide and other sulfides can be used as water treatment agents, and the S2- generated after dissolving in water reacts with heavy metal ions to form metal sulfide precipitates . The use of hydrogen sulfide as a water treatme...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F103/10
Inventor 林炜徐先龙黄宇林沈泉生邹来昌
Owner ZIJIN MINING GROUP
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