MOFs mixed matrix filtering material for sewage treatment and preparation method thereof

Abstract

The invention discloses an MOFs mixed matrix filtering material for sewage treatment and a preparation method thereof, and belongs to the technical field of advanced sewage treatment. The filtering material is composed of fiber yarns made of a polymer material and an MOFs material; the mass fraction of the polymer material is 97% or above, and the MOFs material is 3% or less; the pore diameter ofthe filtering material is 0.04-0.6 [mu]m, and the void ratio range is 45%-75%. The filtering material is fixedly mounted in a filtering tank, and efficient integrated water purifying equipment is built. The equipment is used for treating domestic sewage and industrial wastewater, the turbidity and suspended solids are reduced by 92% or above, the CODCr, BOD5 and ammonia nitrogen contents are reduced by about 23%, the filtering speed is six times that of sand filtration, and the effluent quality is superior to that of a micro-filtration membrane. When the filtering material is applied to the efficient integrated water purification equipment, the equipment has the outstanding advantages of being good in effluent quality, small in occupied area, low in investment cost, low in operation cost and the like, and has wide application prospects.

Description

technical field [0001] The invention belongs to the technical field of advanced sewage treatment, and in particular relates to a MOFs mixed matrix filter material and a preparation method for sewage treatment. Background technique [0002] With the growth of urban population and the development of industrial and agricultural production, the amount of sewage discharge is increasing day by day, and the national environmental protection supervision department has increasingly strict standards for sewage discharge. At present, the advanced treatment of sewage often requires ultra- and microfiltration membrane technology, but the investment cost of this technology is relatively high. For reclaimed water reuse and "zero discharge" treatment, it is necessary to protect the membrane system to reduce fouling of membrane materials. Sand filter + carbon filter + ultrafiltration pretreatment units are often installed at the front end of nanofiltration and reverse osmosis. The process i...

AI Technical Summary

Problems solved by technology

At present, the advanced treatment of sewage often requires ultra- and microfiltration membrane technology, but the investment cost of this technology is relatively high

For reclaimed water reuse and "zero discharge" treatment, it is necessary to protect the membrane system to reduce fouling of membrane materials. Sand filter + carbon filter + ultrafiltration pretreatment units are often installed at the front end of nanofiltration and reverse osmosis. The process is long, the sand filter and carbon filter are easy to harden and difficult to clean, and the ultrafiltration membrane is easy to be fouled, which directly leads to a series of practical problems such as the failure of the subsequent nanofiltration and reverse osmosis treatment units.

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