一种生活污水处理系统及方法

Domestic sewage treatment system and method

Abstract

本发明属于污水处理领域,尤其涉及一种生活污水处理系统及方法。本发明提供的系统包括:格栅;与格栅的出水口相连的第一过滤设备;第一过滤设备的滤网孔径≤500μm;与第一过滤设备的出水口相连的活性污泥处理设备,用于对污水进行活性污泥处理;与活性污泥处理设备的出水口相连的第二过滤设备,第二过滤设备上设置有进水口、出水口、回流污泥排出口和剩余污泥排出口,回流污泥排出口与活性污泥处理设备的进水口相连;第二过滤设备的滤网孔径≤1000μm;与第一过滤设备的污泥排出口和第二过滤设备的剩余污泥排出口相连的水解酸化设备,水解酸化设备上设置有污泥回流口,污泥回流口与活性污泥处理设备的进水口相连。
The invention belongs to the field of sewage treatment, and particularly relates to a domestic sewage treatment system and method. The system comprises a grid, first filter equipment connected with the water outlet of the grid, active sludge treatment equipment which is connected with the water outlet of the first filter equipment and is used for treating active sludge of sewage, second filter equipment which is connected with the water outlet of the active sludge treatment equipment and is provided with a water inlet, a water outlet, a reflux sludge outlet and a remained sludge outlet, and hydrolytic acidification equipment connected with the sludge outlet of the first filter equipment and the remained sludge outlet of the second filter equipment, wherein the pore diameter of the filter screen of the first filter equipment is less than or equal to 500mu m; the reflux sludge outlet is connected with the water inlet of the active sludge treatment equipment; the pore diameter of the filter screen of the second filter equipment is less than or equal to 1000mu m; and a sludge reflux port is formed in the hydrolytic acidification equipment, and is connected with the water outlet of the active sludge treatment equipment.

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