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Technology for treating desulfurization waste water

A desulfurization wastewater and treatment process technology, applied in the direction of gaseous effluent wastewater treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problem of large floor area, high production cost, and many devices, etc. problem, to achieve the effect of small footprint, low production cost and reasonable design

Inactive Publication Date: 2015-12-30
TAICANG DONGNENG ENVIRONMENTAL PROTECTION EQUIP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the desulfurization device and method provided by this patent are too complicated in process, use more devices, have high production cost, and occupy a large area

Method used

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Examples

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Embodiment Construction

[0023] The following examples are used to illustrate the present invention, but should not be used to limit the scope of the present invention. The implementation conditions used in the examples can be further adjusted according to the manufacturer's conditions, and the unspecified implementation conditions are usually conventional experimental conditions.

[0024] A kind of desulfurization wastewater treatment process provided by the present invention comprises the following steps:

[0025] 1) Pass the desulfurization waste water into the reaction tank, add sodium hypochlorite and hydrochloric acid to decompose the organic matter in the desulfurization waste water respectively in the reaction tank under stirring condition;

[0026] 2) Send the desulfurization wastewater treated in step 1) into the primary reaction tank, and add sodium sulfate, lime, NaCl and NaCl to the primary reaction tank under agitation. 2 SO 4 Mix salt, adjust the pH value of desulfurization wastewater...

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Abstract

The invention provides a technology for treating desulfurization waste water. The technology comprises steps as follows: 1) the desulfurization waste water is introduced into a reaction tank, and sodium hypochlorite and hydrochloric acid are added with stirring; 2) desulfurization waste water treated in Step 1) is sent into a first-stage reaction tank; 3) desulfurization waste water subjected to reaction in Step 2) is sent into a second-stage reaction tank; 4) desulfurization waste water treated in Step 3) is sent into a third-stage reaction tank, flue gas of 30-100Nm<3> / h is introduced into the third-stage reaction tank with stirring, precipitate is produced, and a clear liquid is sent to a waste water pool for storage through a delivery pipeline. According to the technology, treatment steps are reasonably designed, a flocculant and a chelating agent are added, fluoride and suspended solids in the desulfurization waste water are agglomerated and precipitated, the suspended solids and the precipitate are discharged through gravitational separation, the treatment efficiency is high, the production cost is low, the occupied area is small, and treated waste water cannot cause pollution and is environment-friendly.

Description

technical field [0001] The invention relates to a desulfurization wastewater treatment process. Background technique [0002] In recent years, the construction scale of thermal power plants in my country has continued to expand, SO 2 The continuous increase of emissions is one of the important pollution sources of the atmosphere, which has caused great harm to the natural environment, buildings and human health. [0003] The "Acid Rain Control Area and Sulfur Dioxide Pollution Control Area Division Plan" formulated by the National Environmental Protection Agency requires thermal power plants in the "two control areas" to meet the emission standards by 2000; Newly built coal-fired thermal power plants in urban areas and suburban areas; newly built and renovated power plants with coal-fired sulfur content greater than 1% must build desulfurization facilities; existing power plants with coal-fired sulfur content greater than 1% must adopt emission reduction measures before 200...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F103/18
Inventor 和晓刚
Owner TAICANG DONGNENG ENVIRONMENTAL PROTECTION EQUIP
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