Method for treating high-salt-content wastewater by atomization method

A high-salt, atomization technology, used in chemical instruments and methods, water/sewage treatment, water/sewage multi-stage treatment, etc. Easy to corrode and block, high processing efficiency and low operating cost

Pending Publication Date: 2021-10-22
洛阳双瑞万基钛业有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The incineration method has the advantage of high COD removal rate, but the tail gas in the incineration process needs to be treated, which is difficult and expensive
The three-effect evaporation method not only has a complicated process, but also has a large equipment investment cost and high treatment cost. At the same time, the concentrated water and sludge generated in the process need further crystallization or drying treatment.

Method used

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Examples

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Embodiment Construction

[0015] The present invention will be described in further detail below in conjunction with the examples, but not as the basis for any limitation on the invention.

[0016] A method for treating high-salt wastewater by atomization, comprising the steps of:

[0017] Step 1: Use the water pump to pump the high-salt wastewater to be treated to the atomization nozzle of the atomizer. Under the action of the high-speed airflow of the atomization nozzle, the high-salt wastewater is atomized into small droplets of 25-200 μm, sprayed into the cyclone;

[0018] Step 2, the ascending cyclone in the cyclone makes the atomized water mist rise, the salt in the water mist is separated from the water mist, and the separated salt particles adhere to the wall of the cyclone and fall into the collection device below;

[0019] Step 3: The rising water mist leaves the cyclone and enters the third-stage condensation system. The first-stage condensation system has a coolant with a temperature of 15...

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PUM

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Abstract

The invention relates to a method for treating high-salt-content wastewater by an atomization method.Wastewater to be treated is atomized and sprayed into a cyclone, water mist in rising airflow is refined again, and due to different densities of the water mist and salt, heavier salt gradually falls on the inner wall of the cyclone and then falls on a collecting device below; the water mist continues to rise along with the air flow until entering a multi-stage condensation system, and concentrated saline water with different salt contents, trace saline water and water without salt are condensed and separated stage by stage; the separated concentrated saline water flows back to the raw water tank with high saline water content through a return pipe for next separation; the trace salt-containing water is discharged or recycled according to the discharge standard; and the salt-free water is directly recycled as process water. The atomization evaporation technology is used for treating the high-concentration salt-containing industrial wastewater, so that the energy consumption can be reduced, the treatment efficiency can be improved, and meanwhile, the salt can be directly dried into particles.

Description

technical field [0001] The invention belongs to the technical field of industrial wastewater treatment, and in particular relates to the treatment of high-concentration saline industrial wastewater, in particular to a method for treating high-salt wastewater by atomization. Background technique [0002] High-concentration saline wastewater refers to wastewater with a total saline mass fraction greater than 1%. High-concentration saline industrial wastewater mainly comes from chemical, pharmaceutical, paper, leather, petrochemical, explosives and other industries. Due to its poor biodegradability, high-concentration saline industrial wastewater is a difficult problem in wastewater treatment. At present, the treatment methods of high-concentration saline industrial wastewater mainly include three-effect evaporation method and incineration method. The incineration method has the advantage of high COD removal rate, but the tail gas in the incineration process needs to be treat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10C02F1/38
CPCC02F1/38C02F1/00
Inventor 李亚军刘正红魏治中
Owner 洛阳双瑞万基钛业有限公司
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