Waste liquid treatment device

Abstract

The invention provides a liquid waste treatment device. By the use of the liquid waste treatment device, capacity of treating radioactive liquid waste is increased, simplicity in replacement of soaking membranes is improved and quantity of radiation to operators is decreased when the soaking members for treatment equipment of nuclear station radioactive liquid waste are used in a solid-liquid separating tank serving as the liquid waste treatment device. The liquid waste treatment device comprises a water tank allowing for inflow of liquid waste and outflow of filtered infiltration water, a liquid waste inflow part allowing for inflow of the liquid waste into the water tank, a plurality of soaking members, an infiltration water intake part, an air supply part, and a porous support board, wherein the soaking members are distributed in circles in the water tank and are mutually isolated to filter foreign matters included in the liquid waste which flows in through the liquid waste inflow part, the infiltration water intake part is used for taking in infiltration water of the liquid waste from the soaking membranes and supplying the infiltration water out of the water tank, the air supply part is used for supplying compressed air to the soaking membranes to prevent the foreign matters from adhering to the surface of the soaking membranes, and the porous support board is used for supporting the bottoms of the soaking membranes and is provided with a plurality of pores on the surface.

Description

technical field [0001] The present invention relates to a waste liquid treatment device, in particular to a method of adding a soaked hollow fiber membrane (hereinafter referred to as "soaked membrane") installed in the solid-liquid separation tank of the pretreatment equipment of the liquid radioactive waste treatment system of the nuclear power plant Set the quantity to increase the processing capacity, improve the convenience of operation and reduce the radiation risk of the operator when replacing the used immersion membrane. Background technique [0002] The submerged membrane is used in the pretreatment equipment of some nuclear power plant liquid radioactive waste treatment systems (Liquid Radwaste System). [0003] These immersion membranes are set in the solid-liquid separation tank to perform primary treatment on the incoming radioactive waste liquid. [0004] The immersion membrane has the function of removing turbid substances, organic and inorganic suspended so...

AI Technical Summary

Problems solved by technology

However, at this time, the height of the immersion membrane that can be installed is limited, so it is not possible to install immersion membranes of various heights, and it takes a lot of time to attach and detach the immersion membrane, which has the problem of inconvenient work.

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