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Introduction
With the rapid development of China's national economy and the construction of municipal infrastructure, especially the sewage treatment plant and other environmental protection projects are increasing, which has a considerable number of sewage treatment plant of the anaerobic tank, sludge thickening pool, biological flocculation pool, built in residential areas, the environment, style and sewage smell, etc., directly affect people's lives and health. Many cities have been required to put the sewage treatment plant (station) of the sewage treatment pool, the collection and management of waste gas. Because of the harmful gases in sewage pool easy for metal component has strong resistance to corrosion, effectively extend the service life of metal components, the use of membrane material tensile characteristics, using reverse hanging membrane process, steel is above the membrane material, harmful gases in the direct damage Co., greatly improving the the service life of the steel body, welcomed by the manufacturers of pollution.
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