Process for treating desulfurization wastewater of power plant

A technology for desulfurization sewage and power plants, which is applied in biological water/sewage treatment, water/sludge/sewage treatment, gaseous discharge wastewater treatment, etc. It can solve the problems of secondary pollution, difficult desulfurization sewage treatment and high treatment cost. Achieve the effect of reducing operating costs, improving biological treatment efficiency and high activity

Active Publication Date: 2015-04-22
YANCHENG LANFENG ENVIRONMENTAL ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a process for treating desulfurization sewage from power plants to solve the problem of difficult treatment of desulfurization sewage, and overcome the shortcomings of traditional physical and chemical methods such as high processing costs and easy to cause secondary pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A process for treating desulfurization sewage from a power plant, comprising the steps of:

[0022] Preparation of biological agents: Culture Thiobacillus denitrificans, Bacillus cereus, Acinetobacter baumannii, Rhodococcus and Pseudomonas fluorescens to concentrations of 1×10 8 Bacteria solution per ml, mixed according to the volume ratio of 3:2:2:1:1, then mixed with the carrier according to the mass ratio of 1:2 and stirred evenly, stirred at 100 rpm for 3 minutes, and finally dried at low temperature, the drying temperature It is 20 ℃, and the water content after drying is 6%, and it is obtained; the carrier is prepared according to the following method: firstly, the particle diameter of diatomite and chitosan is controlled to be 100 mesh, and then the diatomite and chitosan The sugar is mixed evenly according to the mass ratio of 1:1, and it is ready.

[0023] Sewage treatment: adjust the pH of the sewage to 7.0; then add 20 grams of biological agent per cubic met...

Embodiment 2

[0025] A process for treating desulfurization sewage from a power plant, comprising the steps of:

[0026] Preparation of biological agents: Culture Thiobacillus denitrificans, Bacillus cereus, Acinetobacter baumannii, Rhodococcus and Pseudomonas fluorescens to concentrations of 1×10 8 Bacteria solution per ml, mixed according to the volume ratio of 3:2:2:1:1, then mixed with the carrier according to the mass ratio of 1:2 and stirred evenly, stirred at 100 rpm for 3 minutes, and finally dried at low temperature, the drying temperature It is 22 ℃, and the water content after drying is 8%, and it is obtained; the carrier is prepared according to the following method: firstly, the particle diameter of diatomite and chitosan is controlled to be 200 mesh, and then the diatomite and chitosan The sugar is mixed evenly according to the mass ratio of 1:1, and it is ready.

[0027] in,

[0028] The Thiobacillus denitrificans is ATCC 25259 (eg APPLIED AND ENVIRONMENTAL MICROBIOLOGY, Ma...

Embodiment 3

[0035] Taking the desulfurization sewage from a power plant in this city as an example, the sewage treatment effect of the process in Example 2 was tested, and all indicators reached the ideal discharge standard. The detection indicators of sewage are shown in Table 1:

[0036] Table 1

[0037] Before treatment (mg / L) After treatment (mg / L) Removal rate (%) COD 912 59 93.5 SO 4 2- , SO 3 2- 337 7.5 97.8 Sulfide 53 6.1 88.5

[0038] Conclusion: The biological preparation of the present invention can effectively remove sulfate radicals, sulfides and industrial COD substances in sewage, and fully meet the emission standards.

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Abstract

The invention belongs to the field of wastewater treatment and specifically disclosesrocess for treating desulfurization wastewater of a power plant. The process comprises the steps of preparing a biological preparation and treating the wastewater, wherein thiobacillus denitrificans, bacillus cereus, baumanii, rhodococcus and pseudomonas fluorescens are used. The process disclosed by the invention is suitable for treating the desulfurization wastewater of the power plant and can be used for effectively removing sulfur-containing compounds and industrial COD.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and in particular relates to a process for treating desulfurization sewage of a power plant. Background technique [0002] A thermal power plant, referred to as a thermal power plant, is a factory that uses coal, oil, and natural gas as fuel to produce electric energy. Its basic production process is: the fuel is burned in a boiler to heat water to make steam, and the chemical energy of the fuel is converted into heat. The steam pressure The steam turbine is driven to rotate, the heat energy is converted into mechanical energy, and then the steam turbine drives the generator to rotate, which converts the mechanical energy into electrical energy. Among various flue gas desulfurization processes, limestone or gypsum wet flue gas desulfurization process has a high utilization rate in practical engineering applications due to its mature technology, wide range of coal types, and high desulfurization ef...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C02F103/18
CPCC02F3/341C02F2101/101C02F2103/18
Inventor 邵晓东管莉张永超黄倩相京霞王英山吴学进顾恩光郑大伟
Owner YANCHENG LANFENG ENVIRONMENTAL ENG TECH
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