Unpowered fixed-water-level automatic drainer and drainage method thereof

Abstract

The invention discloses an unpowered fixed-water-level automatic drainer and a drainage method thereof, and mainly relates to the field of sludge precipitation drainage. Comprising a water decanting short pipe, a water decanting main pipe and a U-shaped water storage pipe, the top of the water decanting short pipe is communicated with a water decanting main pipe, one end of the water decanting main pipe is communicated with one end of a U-shaped water storage pipe, and the other end of the U-shaped water storage pipe is a water outlet end. A plurality of water decanting short pipes can be arranged according to needs. And the water outlet end of the U-shaped water storage pipe is lower than the lowest end of the water decanting short pipe. The device has the beneficial effects that the device is applied to a UniFedSBR (Sequencing Batch Reactor) tank, namely a sewage treatment tank, the problem of overflow of a mixed solution is solved, and the device can immediately enter a water inlet precipitation stage after aeration is finished, so that the working time can be effectively saved, and the working period can be shortened. The device is free of electric equipment, pneumatic equipment and operating parts, simple in structure, reliable in operation and free of faults; and full-automatic operation can be realized according to a set water level without additional operation. The device is formed by bonding UPVC pipes and pipe fittings, and is easy and convenient to manufacture and low in cost.

Description

technical field [0001] The invention relates to the field of sludge sedimentation drainage, in particular to a non-powered automatic drainer with fixed water level and a drainage method thereof. Background technique [0002] The UniFedSBR process is a new simultaneous denitrification and phosphorus removal process developed by Australia in 1998 and successfully applied to actual domestic sewage treatment plants. The UniFedSBR process is still a sequencing batch activated sludge process (SBR) in essence, but it is different from the traditional SBR process in terms of water intake and operation. A typical UniFedSBR operation cycle includes water intake / drainage, aeration and sedimentation. stages, as shown in the accompanying drawings Figure 7 shown. [0003] The working process of UniFedSBR is: in a single SBR tank, after the aeration phase of the previous cycle ends and the sludge settles for a certain period of time, the water intake and drainage process of the next cycl...

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to provide a non-powered automatic water level drainer and its drainage method, which is applied to the UniFedSBR tank, that is, the sewage treatment tank, which not only solves the problem of mixed liquid overflow, but also enters the water for sedimentation immediately after the aeration is completed stages, which can effectively save working time and shorten the working cycle

Images