COMBINED TYPE PRIVATE SEWAGE TREATMENT PURIFICATION EQUIPMENT

PROBLEM TO BE SOLVED: To facilitate the maintenance and management of a combined type private sewage treatment purification equipment. SOLUTION: The combined type private sewage treatment purification equipment is provided with a flow regulation vessel a, a metering vessel b, a biological treatment vessel d, a precipitation vessel e, and a sludge thickening storage tank c. In the equipment, the sewage accepted in the regulation vessel a is adjusted to a prescribed flow rate by the metering vessel b and successively transferred to the biological treatment vessel 4, and the sewage subjected to biological treatment in the treatment vessel d is transferred to the precipitation vessel e where the sewage is precipitated. The supernatant liquid is discharged therefrom and the precipitated sludge is drawn therefrom and is transferred to the storage tank c where the sludge is stored and thickened. The storage tank c is provided with a return pipe f for returning the desorption liquid separated and formed to the intermediate between the heavy sludge precipitated therein and the light sludge containing gas to the treatment vessel d such that the sewage circulates to the storage tank c, the treatment tank d and the precipitation tank e. COPYRIGHT: (C)2004,JPO