Dynamic micro filter membrane assembly and water treatment process method

Abstract

The invention discloses a dynamic microfiltration membrane module for water treatment technique, which comprises: a filter chamber contained a micropore on wall, a recoil inlet pipe and a filter outlet pipe both on side surface, and an air-exhaust pipe on top; and a filter network folded into a concave-convex curve to fix on the front and back walls of the filter chamber. Wherein, connecting the filter chamber lower end to a backwash gas-distribution system with an aeration header and a distributing pipe connected to the gas inlet pipe; connecting supporting parts with concave-convex surface on upper and lower ends of the filter chamber to lay the filter network, fixing the firmware for concave-convex surface on the network, and setting both the outside of supporting part and firmware inside with the opposite curves as the network. The opposite water treatment technique comprises: hanging the membrane, filtering, outputting water, and clearing the dynamic membrane. This invention enhances the membrane packing density, reduces cost, and prolongs membrane service lifetime.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a dynamic microfiltration membrane module and a water treatment process. Background technique [0002] At present, in the sewage treatment industry, the process of using microfiltration membrane to filter and separate the mixed liquid in the biochemical tank to obtain higher quality effluent is called the MBR (Membrane Biological Reactor) process. Compared with the traditional process, it has the advantages of less land occupation and better effluent effect, and the treated effluent can meet the water quality standard for direct reuse. At present, the materials of microfiltration membranes in the MBR process are mostly polyethylene, polypropylene, polyvinylidene fluoride and other materials, the price is high, the life is short (about 5 years for imported membranes, and about 3 years for domestic membranes), and the project investment is relatively high (membrane The investment a...

AI Technical Summary

Problems solved by technology

The current process of filtering and separating the mixed liquid in the reactor with dynamic membrane modules is limited to the small-scale test stage, because the filtering surface is mostly planar (lower volume ratio, higher production cost), and it is difficult to realize online cleaning after being polluted (in The filter surface is cleaned in the reactor to remove pollutants), so it has not yet been marketed and industrialized

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