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Wet desulfurization wastewater treatment method

A treatment method, wet desulfurization technology, applied in the direction of gaseous effluent wastewater treatment, water/sewage treatment, special compound water treatment, etc., can solve the problem of low removal rate

Inactive Publication Date: 2019-02-19
XIANGTAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The so-called triple box is an integrated wet desulfurization wastewater treatment equipment, including a neutralization tank (neutralization tank), a sedimentation tank (sedimentation tank) and a flocculation tank (flocculation tank). , Suspended solids and other pollutants have a significant effect, but the removal rate of COD and ammonia nitrogen and other pollutants is low

Method used

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  • Wet desulfurization wastewater treatment method

Examples

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Effect test

Embodiment 1

[0039] (1) Pretreat the raw water of magnesium sulfite wet desulfurization wastewater, and then adjust the pH value of the pretreated wastewater to 3.5.

[0040] GC-MS detection was carried out on the wastewater after pH adjustment, and the results were as follows: figure 1 as shown, figure 1 It is the GC-MS spectrum of the desulfurization wastewater provided by Example 1 of the present invention. pass figure 1 It can be seen that the pretreated desulfurization wastewater contains octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, dodecylsiloxane, cyclooctylsiloxane alkane, cycloheptasiloxane.

[0041] Quantitative analysis of the pollutant components contained in the wastewater that has completed pH adjustment is performed, and the results are shown in the following table:

[0042] index

value

COD

1280mg / L

Ammonia nitrogen

226.7mg / L

Magnesium ions

2.98×10 4 mg / L

Zinc ions

0....

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Abstract

The invention belongs to the field of wastewater treatment, and particularly relates to a wet desulfurization wastewater treatment method. The wet desulfurization wastewater treatment method comprisesthe following steps that 1, the pH value of desulfurization wastewater is regulated to 2.25-4.5, then, the desulfurization wastewater is mixed and reacts with hydrogen peroxide and ferrite, and oxidized wastewater is obtained; 2, the oxidized wastewater and calcium peroxide are subjected to a mixed reaction, precipitates are removed, and a clear solution is obtained; 3, in the presence of Mg2+, the clear solution and diphosphate are subjected to a mixed reaction, precipitates are removed, and processed wastewater is obtained; the source of Mg2+ is additionally added Mg2+ and / or Mg2+ containedin the clear solution. By combining Fenton oxidation, calcium and silicon composite precipitates and zinc and magnesium phosphate precipitation technology, desulfurization wastewater is treated, andCOD and ammonia nitrogen in the wet desulfurization wastewater can be efficiently removed.

Description

[0001] This application claims the priority of the Chinese patent application with the application number 201811338535.4 and the title of the invention "a treatment method for wet desulfurization wastewater" submitted to the China Patent Office on November 12, 2018, the entire contents of which are incorporated herein by reference Applying. technical field [0002] The invention belongs to the field of waste water treatment, and in particular relates to a treatment method for wet desulfurization waste water. Background technique [0003] Sintering flue gas desulfurization is the key to energy saving and emission reduction in non-power industries such as iron and steel. During the wet desulfurization process of sinter flue gas, a large amount of Cl will be enriched in the absorption tower and the circulating slurry absorption liquid system - , SO 4 2- and heavy metal ions, it is necessary to reduce the harm to the wet desulfurization operation system by discharging / replaci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F101/30C02F103/18
CPCC02F1/5236C02F1/66C02F1/722C02F9/00C02F2101/30C02F2103/18C02F2305/026
Inventor 戴友芝杨涵童陈敏行刘丹妮彭亮平翟亚丽
Owner XIANGTAN UNIV
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