Odor pollutant control method for evaporation pond of in-situ leaching uranium mine

A control method and in-situ leaching uranium mining technology, which can be used in mining wastewater treatment, chemical instruments and methods, and neutralized water/sewage treatment. Effect

Active Publication Date: 2019-07-05
中核通辽铀业有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to provide a method for controlling odorous pollutants in evaporation pools of uranium mining mines by in-si

Method used

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  • Odor pollutant control method for evaporation pond of in-situ leaching uranium mine
  • Odor pollutant control method for evaporation pond of in-situ leaching uranium mine

Examples

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Embodiment 1

[0041] A method for controlling odorous pollutants in evaporation pond solution of in-situ leaching uranium mining mines, suitable for CO 2 +O 2 In-situ leaching of uranium mines, including the following steps:

[0042] Step 1: Install a circulation pump, reagent preparation tank and circulation pipeline on the edge of the evaporation pool;

[0043] Step 2: Add the mixed solution of dodecyl dimethyl benzyl ammonium chloride and sodium dichloroisocyanurate prepared in the preparation tank into the evaporation pool with a circulating pump;

[0044] The mass concentration of the mixed solution is 32 mg / L, and the mass ratio of dodecyldimethylbenzyl ammonium chloride to sodium dichloroisocyanurate is 3.5:1;

[0045] When the concentration of free chlorine in the evaporation pool reaches 6.5mg / L, stop adding the mixed solution, and the circulation pump continues to run for 24 hours to stir the wastewater in the evaporation pool evenly;

[0046] Step 3: Add the sodium hydroxide s...

Embodiment 2

[0049] A method for controlling odorous pollutants in evaporation pond solution of in-situ leaching uranium mining mines, suitable for CO 2 +O 2 In-situ leaching of uranium mines, including the following steps:

[0050] Step 1: Install a circulation pump, reagent preparation tank and circulation pipeline on the edge of the evaporation pool;

[0051] Step 2: Add the mixed solution of dodecyl dimethyl benzyl ammonium chloride and sodium dichloroisocyanurate prepared in the preparation tank into the evaporation pool with a circulating pump;

[0052] The mass concentration of the mixed solution is 43mg / L, and the mass ratio of dodecyldimethylbenzyl ammonium chloride to sodium dichloroisocyanurate is 4.2:1;

[0053] When the concentration of free chlorine in the evaporation pool reaches 7.2mg / L, stop adding the mixed solution, and the circulation pump continues to run for 24 hours to stir the wastewater in the evaporation pool evenly;

[0054] Step 3: Add the sodium hydroxide so...

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Abstract

The invention relates to the technical field of wastewater odor pollutant control, and specifically discloses an odor pollutant control method for an evaporation pond of an in-situ leaching uranium mine. The method comprises the following steps: (1) adding a mixed solution of dodecyl dimethyl benzyl ammonium chloride and sodium dichloroisocyanurate into the evaporation pond to kill bacteria and green plankton in the solution; (2) adding a sodium hydroxide solution into the evaporation pond to adjust the pH value of the wastewater in the evaporation pond; and (3) adding a flocculant into the evaporation pond to make suspended solids in the evaporation pond quickly settle and make the solution be clear and transparent. The method realizes the green and harmony of the evaporation pond ecological environment, and has relatively high social value, environmental protection value and ecological value.

Description

technical field [0001] The invention belongs to the technical field of waste water stench pollutant control, and in particular relates to a method for controlling stench pollutants in an evaporation pool of an in-situ leaching uranium mining mine. Background technique [0002] In-situ leaching uranium mining technology is an environmentally friendly uranium deposit mining process that integrates mining, dressing, and smelting. The prepared leaching agent is injected into the underground ore layer through liquid injection drilling, and the uranium ore under natural burial conditions A chemical reaction is carried out to dissolve the uranium in the ore into the solution to form a uranium-containing solution, which is then lifted to the new surface treatment process through the pumping hole. [0003] In the process of production and operation, the method of discharging part of the adsorption tail liquid into the evaporation pool is used to control the proportion of the pumping ...

Claims

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Application Information

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IPC IPC(8): C02F9/10C02F103/10
CPCC02F1/50C02F1/56C02F1/66C02F9/00
Inventor 阮志龙原渊张勇汤庆四廖天伟胥建军滕飞曹俊鹏杨少武黄发定
Owner 中核通辽铀业有限责任公司
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