Purification device and process of sludge drying and granulation waste gas

Abstract

The invention discloses a purification device and process of sludge drying and granulation waste gas. The purification device comprises a waste gas collection module, a dust removing module, a biological purification module, a high-energy ion purifier, an adsorption purifier and an exhausting module which are connected through an air pipe in series and in sequence; the high-energy ion purifier and the adsorption purifier are connected with a bypath in parallel through a switching valve connected with an odor sensor; the bypath is used for directly connecting the switching valve and the exhausting module. According to the purification device and process disclosed by the invention, the waste gas generated by sludge drying and granulation is treated in a combined manner through dust removal, biological purification and high-energy ion purification; the purification efficiency is high and the cost is low; primary dust removal is carried out through a cyclone dust remover; before the biological purification is carried out, spraying cooling and dust removal are carried out; an applicable waste gas temperature range is wide; after the device and the process, disclosed by the invention, are used for treating the waste gas generated in a sludge drying and granulation process, the emission concentration of dust and odorous gas in the waste gas is much lower than National Emission Standard Limit, so that the environment is protected and physical and mental health of common people is effectively maintained.

Description

technical field [0001] The invention belongs to the field of sludge drying and granulation waste gas purification, and in particular relates to a sludge drying and granulation waste gas purification device. Background technique [0002] With the development of society and the progress of mankind, people's awareness of environmental protection and improvement has been continuously strengthened. At the same time, the state has continuously strengthened the implementation of environmental protection policies, which has continuously increased the sewage treatment rate nationwide. Every city has built sewage treatment plants. There are hundreds of large, medium and small sewage treatment plants, and the number is still increasing rapidly. Every sewage treatment plant is faced with the problem of how to dispose of a large amount of excess sludge generated every day, and the amount of sludge accounts for about 0.3% to 0.5% of the treated water (water content is about 97%). [0003...

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Problems solved by technology

[0006] The technical problem solved by the present invention is to provide a novel sludge drying and granulation waste gas purification device and process in view of the defects of low efficiency and high cost in existing sludge drying and granulation waste gas purification

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