Continuous filtering device adopting up-flow type flowing bed and filtering method

Abstract

The invention relates to a continuous filtering device adopting an up-flow type flowing bed and a filtering method. In a conventional three-phase treatment process, for a coagulating basin and a sedimentation basin in conventional two-stage biochemical treatment, deep treatment is performed on effluent of the secondary sedimentation basin after active sand is indirectly arranged behind a secondarysedimentation basin, and then process facilities such as the coagulating basin and the sedimentation basin need to be specifically arranged. Coagulant cannot be directly fed in a water inlet pipelineor channel, active sand process work amount and investment are relatively high, and operation and maintenance cost are high. The continuous filtering device adopting an up-flow type flowing bed comprises a shell, wherein the shell is connected with a raw water inlet (2), a sand washing sewage outlet (3) and a pure water outlet (9) respectively, dirty sand (11), a sand bed (5) and a sand pouring hopper (7) are arranged in the shell, and the sand pouring hopper is formed by welding a sector structural member and a conical structural member. The device and the method are applied to the field ofdrinking water, industrial water, advanced sewage treatment and reclaimed water reuse treatment.

Description

Technical field: [0001] The invention relates to a continuous filtering device and filtering method using an upflow fluidized bed, adopting the upflow fluidized bed filtration principle and a single homogeneous filter material, and filtering and sand washing are performed simultaneously. Background technique: [0002] 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. Invention content: [0003] The purpose of the present invent...

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.

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