Combined apparatus for the biological purification of waste waters
专利汇可以提供Combined apparatus for the biological purification of waste waters专利检索，专利查询，专利分析的服务。并且Combined apparatus for the biological purification of waste waters by means of activated sludges, which comprises at least two coupled clarification tanks which are in communication with an aerator tank as well as means for recycling the settled sludges coming from the clarification tanks into the aerator tank, characterized by the fact that the means for recycling the settled sludges consist of air pumps of the ''''air-lift'''' type which discharge into the aerator from each of the clarifiers and which are fed with air with a pulsating intermittent flow, alternating in each of the clarifiers, which causes a pulsating recirculation of the settled sludges, alternately from each of the clarifiers towards the aerator. The air-lifts are so developed that they have a base which is flared with respect to their top, said base constituting the orifice thereof for the drawing in of settled sludges which are to be recycled.，下面是Combined apparatus for the biological purification of waste waters专利的具体信息内容。
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