Continuous up-flow type active sand filter treatment device and filter method

Abstract

The invention discloses a continuous up-flow type active sand filter treatment device and filter method. A coagulation pond and a sedimentation pond in a traditional three-section type treatment process are used in a conventional secondary biochemical treatment, active sand is arranged indirectly behind a secondary sedimentation pond and is used for deep treatment of effluent of the secondary sedimentation pond, and the coagulation pond, a clarifying pond and other process facilities require to be arranged dedicatedly; a coagulant cannot be directly added in a water inlet pipeline or channel, the active sand technology project amount and investment are relatively high, and operation and maintenance costs are high. The continuous up-flow type active sand filter treatment device comprises a housing (1); the housing is respectively connected with a raw water inlet (2), a sand washing sewage outlet (3) and a purified water outlet (9); the housing is internally provided with dirty sand (11), a sand bed (5) and a sand pouring hopper (7); and the sand pouring hopper is welded by a fan-shaped structural member and a tapered structural member. The continuous up-flow type active sand filter treatment device and filter method are applied to the fields of deep treatment of drinking water, industrial water and sewage, and reclaimed water reuse treatment.

Description

[0001] Technical field: [0002] The invention relates to a continuous flow-type active sand filtration treatment device and a filtration method, adopting the principle of upflow fluidized bed filtration and a single homogeneous filter material, and performing filtration and sand washing at the same time. [0003] Background technique: [0004] The coagulation tank and sedimentation tank in the traditional three-stage treatment process. In the conventional secondary biochemical treatment, the active sand should be installed indirectly after the secondary sedimentation tank. For advanced treatment of the effluent of the secondary sedimentation tank, a special coagulation tank, Process facilities such as clarification tanks. The coagulant cannot be directly added to the water inlet pipeline or channel, and the engineering quantity and investment of the active sand process are relatively high, and the operation and maintenance cost is high. [0005] Invention content: [0006] T...

AI Technical Summary

Problems solved by technology

The coagulant cannot be directly added to the water inlet pipeline or channel. The engineering volume and investment of the active sand process are relatively high, and the operation and maintenance costs are high.

Images