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Snow China Resources Snow Beer (China) Co., Ltd
Browse: Release date: January 29, 2019 Tel: 13335258116

Snow China Resources Snow Beer (China) Co., Ltd

Urban sewage treatment equipment As a branch of environmental science, technology has made great progress on the whole, but it still lags behind the level of urban development in China. In recent years, although research and development of some equipment and technology, but on the whole is mainly to learn from and introduce some foreign advanced technology, experience and equipment.
Primary treatment process and its development trend
There are two types of primary enhanced treatment technologies: one focuses on physicochemical mechanism, and the other focuses on microbial flocculation and adsorption principle. At present, the primary treatment technologies studied at home and abroad are mainly as follows.
1
Activated sludge process is based on the flocculation kinetics and biosorption theory, which is an enhanced primary treatment process of municipal wastewater. The enhanced effects of the process on pollutant removal mainly include sludge flocculation, adsorption and biological metabolism, and the former two are the main functions.
The characteristics of this process are that the raw water of domestic sewage without sedimentation and biological sludge enter the mixing reactor (flocculation adsorption tank) at the same time, and the two are fully mixed under the action of mechanical stirring. After full flocculation and adsorption reaction, a large number of pollutants are flocculated and absorbed into the sludge flocs, and the effluent of the sedimentation tank enters the sedimentation tank to realize solid-liquid separation. The effluent from the sedimentation tank is the final effluent (see Figure 1). In order to restore the biological flocculation and adsorption activity of the saturated sludge in the sedimentation tank, the precipitated sludge is activated by aeration for a short time to partially degrade the adsorbed organic matter and produce appropriate amount of microbial flocculant, so as to improve the sedimentation performance of the sludge, and maintain the aerobic state of the sludge to avoid blackening and stinking. The energy consumption of this process is much lower than that of the secondary biological oxidation reaction. However, it is a new technology that needs to be improved in this area.

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