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Typical sludge treatment process
2015-04-17 Reads : 31
Welcome to the needs of those who call to order! Typical sludge treatment process, including four treatment or disposal stage. The first phase of sludge thickening, the main purpose is to make the initial sludge volume reduction, reduce the volume of post-processing structures or equipment capacity; the second stage of sludge digestion, sludge decomposition of organic matter; the third stage of sludge dewatering, sludge volume reduction further; the fourth stage of sludge disposal, the use of sludge in some way will eventually be consumptive. Above supernatant or filtrate produced stage still contains large amounts of pollutants, and should be sent back to the sewage treatment system. After more than a typical sludge treatment process, the treated sludge can achieve the "four modernizations": (1) reduction: Due to the high water content of the sludge, the volume is large, and there was liquidity. After treatment by the above process, the sludge volume was reduced to one of the original dozen points, and the transformation from liquid to solid, easy to transport and consumptive. (2) Stabilization: high organic content of the sludge, and can easily generate the stench of corruption. After digestion stage processing by the above flow, partially decomposed organic matter is converted perishable, non-perishable, the stench is greatly reduced, easy to transport and disposal. (3) harmless: sludge, especially in primary sludge, containing a large number of pathogens, parasites and viruses eggs, could easily lead to a large area of ??the spread of infectious diseases. After the above process of digestion phase, marriage can kill most of the eggs, pathogenic bacteria and viruses, greatly improving the health indicators of sludge. (4) resources: sludge is a resource, which contains a lot of heat, the heat value between 10000 ~ 15000kJ / kg (dry mud), higher than coal and coke. In addition, the sludge is also rich in NPK, organic fertilizer with a higher fertility. Through the above process of digestion phase, the organic matter can be converted into biogas, making them able to take advantage of the heat, but also to further improve its fertility. Sludge thickening process often used gravity concentration, centrifugal concentration and flotation concentrate and so on. Anaerobic sludge digestion can be divided into two categories digestion and aerobic digestion. Sludge dewatering and drying can be divided into natural and mechanical dewatering two categories. Conventional mechanical dewatering processes are frame filter press dewatering, belt filter press dewatering, centrifugal dehydration. Sludge disposal many ways, mainly forestry use, sanitary landfill, incineration and production of building materials and so on.
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Droit d'auteur © GuangDong ICP No. 10089450, Changzhou City, un rouge séchage Equipment Co. Tous droits réservés.
Support technique: ShenZhen AllWays Technologie Développement Co., Ltd.
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Vous êtes le 21112 visiteur
Droit d'auteur © GuangDong ICP No. 10089450, Changzhou City, un rouge séchage Equipment Co. Tous droits réservés.
Support technique: ShenZhen AllWays Technologie Développement Co., Ltd.
AllSources réseau's désistement: La légitimité de l'information de l'entreprise ne s'engage pas à toute responsabilité de garantie