首页>
外国专利>
EXCESSIVE SLUDGE DECOMPOSITION TREATMENT METHOD AND APPARATUS COMBINED WITH SOIL COVERING TYPE SEWAGE TREATING APPARATUS
EXCESSIVE SLUDGE DECOMPOSITION TREATMENT METHOD AND APPARATUS COMBINED WITH SOIL COVERING TYPE SEWAGE TREATING APPARATUS
展开▼
机译:污泥过剩分解处理方法及装置与土壤覆盖式污水处理装置组合
展开▼
页面导航
摘要
著录项
相似文献
摘要
PURPOSE:To perfectly treat excessive sludge, by a relatively simple and small sewage treating apparatus wherein excessive sludge adhered to the pebble layer on a perforated plate is released by forcibly feeding air from an air diffusion pipe provided to the bottom part of a sewage treating tank and decomposed in an aqueous system filter material layer provided the upper part of the tank wall. CONSTITUTION:Sewage is supplied into a sewage treating tank 1 so as to bring the variable surface of sewage to the highest level with respect to excessive sludge adhered to pebbles 3 and, at the same time, air is sent to an air diffusion pipe 6 in an amount of several times as compared with a usual amount to generate a water stream in the tank 1 and the excessive sludge adhered to the pebbles 3 is forcibly released. As a result, a liquid mixture of released sludge and sewage filling the tank 1 is sent into an aqueous system filter material 9 under pressure by a pump P2 through a conduit T and a ceramic pipe 9 provided to the upper part of the tank 1. In this case, moisture is recirculated into the tank 1 from the recessed part of a mountain shaped net 4 and sludge holding a proper amount of moisture remaining in the filter material 9 is subjected to biological decomposition (soil animals, soil microorganisms and plant roots).
展开▼