Technique method for processing desulphurization waste water

A technology of desulfurization wastewater and process methods, applied in the direction of energy wastewater treatment, water/sewage treatment, chemical instruments and methods, etc., can solve the problems of large consumption of electric energy or other thermal energy, limited weather conditions, and difficult operation control, etc., to achieve Avoid corrosion and scaling problems, improve wastewater reuse rate, and mature equipment and products

Active Publication Date: 2009-04-29
CHENGDU RAISE ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. Exposure and solidification of desulfurization wastewater requires a large site and is limited by climatic conditions;
[0006] 2. The use of heaters to evaporate and solidify desulfurization wastewater has serious corrosion and scaling problems, requires expensive anti-corrosion materials, and is difficult to contr

Method used

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  • Technique method for processing desulphurization waste water
  • Technique method for processing desulphurization waste water

Examples

Experimental program
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Effect test

Embodiment 1

[0041] A process for treating desulfurization wastewater, such as figure 1 shown, including:

[0042] Drying tower 1, nozzle 2, smoke pipeline 3, concentrated waste box 14, output pipeline 5, filter press separation device 7, circulation pool 10, circulation pipeline 12;

[0043] Wherein, the upper part of the drying tower 1 is connected to the flue gas outlet pipe 13, and the flue gas outlet pipe 13 may be the inlet part of the flue gas input pipe to be desulfurized in the limestone-gypsum wet flue gas desulfurization technology system;

[0044]The waste water spraying device 2 is fixedly installed inside the drying tower 1. The nozzle 2 can be a long pipe with many small holes, or a nozzle with many small holes, or it can be a common technology. Various mature spraying devices, the desulfurization wastewater is sprayed into fine mist droplets through the nozzle 2;

[0045] The flue gas pipeline 3 is connected to the bottom of the drying tower 1, so that the hot flue gas of...

Embodiment 2

[0062] A process for treating desulfurization wastewater, as shown in Figure 2, includes:

[0063] Drying tower 1, smoke pipe 3, waste water pipe 20, output pipe 5, dust collector 21, exhaust fan 22, flue gas outlet pipe 13, solid outlet 8;

[0064] The drying tower 1 is a spray dryer 1, and the spray dryer 1 is a general technical product available on the market. The spray dryer 1 is equipped with a hot air inlet, a raw material liquid inlet, a material outlet, and a waste gas outlet;

[0065] Among them, the nozzles on the spray dryer 1 that are in contact with the desulfurization wastewater should be made of anti-corrosion materials.

[0066] The dust remover 21 is also a general technical product available on the market, and the dust remover 21 is provided with an inlet, an ash discharge port and an exhaust port;

[0067] Smoke exhaust fan 22 is also a general-purpose technical product available on the market. One end is the fan inlet, and the other end is the fan outlet....

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Abstract

The invention discloses a technology method for treating desulfurization wastewater, which are applicable to treating the wastewater generated from limestone-plaster wet flue gas desulfurization and other wastewater with high salt content. The method uses the flue gas of heat-engine plants to carry out evaporation and solidification treatment to the desulfurization wastewater or other wastewater with high slat content which is hard to be recovered. The method is characterized by low cost, little area occupation and low energy consumption, which can provide help to the original limestone-plaster wet flue gas desulfurization treatment technology and realize zero discharge of the wastewater of the limestone-plaster wet flue gas desulfurization technology.

Description

technical field [0001] The invention discloses a process method for treating desulfurization wastewater, which is suitable for treating wastewater with high salt content, and is particularly suitable for treating wastewater produced after limestone-gypsum wet flue gas desulfurization. Background technique [0002] There are more than 200 desulfurization technologies studied internationally, which are divided into three forms, namely desulfurization before combustion, desulfurization during combustion, and desulfurization after combustion. Only the third type is the only large-scale commercial application technology in the world. The third form is divided into wet method, dry method and semi-dry method according to the form of desulfurizer; and the most important flue gas desulfurization technology in wet method is the wet limestone / lime method in the United States and the wet limestone / gypsum method in Japan. [0003] China's power plant flue gas desulfurization technology s...

Claims

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Application Information

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IPC IPC(8): C02F1/12
CPCY02W10/37
Inventor 余乐
Owner CHENGDU RAISE ENVIRONMENTAL PROTECTION TECH CO LTD
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