Boiler exhaust gas and wastewater treatment technology

A technology for treating process and boiler waste gas, which is applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. Large quantity and other problems, to achieve the effect of small maintenance, long service life and low operating cost

Inactive Publication Date: 2014-02-05
ANHUI GREEN TITAN ENVIRONMENTAL TECH
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Problems solved by technology

[0003] After the waste gas produced by the boiler is dedusted by the water film, although the pollution of sulfide is removed, the turbidity, suspended solids and COD c

Method used

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  • Boiler exhaust gas and wastewater treatment technology
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Embodiment Construction

[0018] A treatment process for boiler waste gas and wastewater includes the following steps:

[0019] (1) The wastewater enters the coagulation reaction tank 1. Sodium hydroxide is first added, and then the coagulant polyaluminum chloride and the coagulant polyacrylamide are added to the wastewater. The particulate and colloidal pollutants in the wastewater are first Under the action of polyaluminum chloride, a large number of small granular solid suspensions are formed, and then the solid suspensions formed in the wastewater are further polymerized under the action of polyacrylamide to form larger particles of flocs; among them, the inside and outside of the coagulation reaction tank The air compressor is connected, so that the input coagulant polyaluminum chloride and coagulant polyacrylamide can achieve rapid stirring in the wastewater;

[0020] (2) The effluent from the coagulation reaction tank 1 enters the sedimentation tank 2 for solid-liquid separation, and the effluent fro...

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Abstract

The invention discloses a boiler exhaust gas and wastewater treatment technology. The boiler exhaust gas and wastewater treatment technology is characterized in that firstly wastewater enters a coagulation reaction tank, a coagulant, namely aluminium polychlorid and a coagulant aid, namely polyacrylamide are added to the wastewater, granular and colloid pollutants in the wastewater form lots of small granular suspended solids under the effect of the aluminium polychlorid, and the suspended solids formed in the wastewater further polymerize and form larger granular flocs under the effect of the polyacrylamide; yielding water of the coagulation reaction tank enters a sedimentation tank and is subjected to solid-liquid separation, and finally yielding water of the sedimentation tank flows into a sand filter, so that tiny suspended matters and impurities in water are further removed, and yielding water in the sand filter can be discharged after reaching the standard. The boiler exhaust gas and wastewater treatment technology has the advantages that a coagulating sedimentation and sand filtration treatment combined technology is adopted, the treated wastewater can be recycled, lots of resources are saved, the green production can be realized, and a famous clean production environment is created.

Description

[0001] Technical field [0002] The invention involves the field of industrial wastewater treatment, which is specifically a processing process of boiler waste gas wastewater. Background technique [0003] After the exhaust gas generated by the boiler was removed through the water film, although the pollution of sulfide was removed, the turbidity, suspension and COD concentration were still high in the wastewater of the waste gas of the boiler waste gas, and the emissions were large, which seriously affected the environment.It is urgent to need a low -cost, continuous and fast -growing dust removal and wastewater, so that it can meet the national regulations. Invention content [0004] The technical problem to be solved by the present invention is to provide a processing process of boiler waste gas wastewater. It adopts a combination of concrete precipitation + sand filter treatment.Famous clean production environment. [0005] The technical solution of the present invention is:...

Claims

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Application Information

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IPC IPC(8): C02F9/04
Inventor 姚明李双建胡召堂赵晓刚
Owner ANHUI GREEN TITAN ENVIRONMENTAL TECH
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