Intelligent zero-discharge drainage method and drainage sedimentation tank applying same

Abstract

The invention discloses an intelligent zero-discharge drainage method. The method comprises the following steps: S1, setting the maximum value H<set> / t of the water taking depth of an undisturbed settling zone of a drainage pump, S2, metering the time t when the first-stage supernatant depth H1 of water sedimentation in the tank body reaches H<set>, wherein the initial sedimentation velocity V<sedimentation> of particles in the tank body is equal to H<set> / t, S3, when the depth H1 of the supernatant reaches H<set>, starting the drainage pump, S4, setting the water outlet speed V<water> equal to V<sink>-A, wherein A is a safety value, S5, setting the flow Q1 of the drainage pump equal to V<water>*S, wherein S is the sedimentation area of the tank body, and setting Q1 during initial operation equal to (H <set> / t-A)*S, and S6, with the time t as a period, monitoring the supernatant depth of the second stage to be H2 and the particle settling velocity V<settling>2 in the second stage to beH2 / t, and repeating the steps S3 to S5, so that dynamic control is achieved, and water outflow can be intelligently controlled. The invention further provides a drainage sedimentation tank applying the intelligent zero-discharge drainage method, and the sedimentation tank is small in occupied area and high in sedimentation efficiency.

Description

Technical field

[0001] The invention relates to an intelligent zero-discharge drainage method, which belongs to the technical field of sewage treatment. Background technique

[0002] The sedimentation tank is a treatment structure that uses gravity sedimentation to remove suspended particles with a density greater than water from the water. It is one of the most widely used treatment institutions in sewage treatment. It can be used for wastewater treatment, biological treatment post-treatment and advanced treatment Wait.

[0003] At present, the commonly used sedimentation tanks on the market include inclined tube sedimentation tanks, advection sedimentation tanks, vertical flow sedimentation tanks, and amplitude-flow sedimentation tanks. There are some problems in these types of sedimentation tanks: the maintenance and management of the inclined tube sedimentation tank is difficult, and the inclined tube needs to be replaced after a period of use; the advection sedimentation tank...

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