Active carbon-dynamic membrane two-stage compound sewage direct filtering technology

Abstract

The invention relates to an active carbon-dynamic membrane two-stage compound technology which is used for municipal sewage treatment and recycling. The technology depends on two stages of reactors which are connected in series; each stage of the reactor is formed by compounding active carbon and a dynamic membrane and the difference between the two stages of reactors is that the grain diameters of the active carbon and the pore diameters of dynamic membrane base materials are different. In the first-stage reactor, the active carbon with the large grain diameter is added in one step; after theactive carbon is uniformly stirred and mixed with sewage, the mixture is filtered and separated through a dynamic membrane assembly, concentrated organic matters are intercepted and stable first-stage output water is generated; in the second-stage reactor, the active carbon with the small grain diameter is added in one step; after the active carbon is uniformly stirred and mixed with the first-stage output water, the mixture is filtered and separated through the dynamic membrane assembly; the output water is sucked and collected by a pump and enters a second-stage water production box; furthermore, the interception and recycling of the organic matters are strengthened and stable recycled water is generated. According to the active carbon-dynamic membrane two-stage compound technology, anactive carbon strengthened dynamic membrane filtering technology is utilized and effective concentration of the organic matters in the sewage can be realized; the recycled water suitable for afforesting, irrigating and the like is generated and the technology has the characteristics of occupied land saving, short flow, economical efficiency and high efficiency.

Description

technical field [0001] The invention relates to a sewage resource treatment and reuse process, in particular to an activated carbon-dynamic membrane two-stage composite sewage direct filtration process. Background technique [0002] With the rapid development of economy and society, the discharge of urban sewage is increasing day by day. The current water pollution problem seriously restricts the sustainable development of economy, society and environment. The existing sewage treatment technology, especially the activated sludge method, mainly realizes the transformation and transfer of pollutants in the way of high energy consumption such as aeration. The sewage treatment process has high cost, high energy consumption, large carbon emissions, and resources The recovery rate is low, which is a process of "energy consumption" and a great waste of potential resources such as organic matter (COD). Therefore, how to "turn waste into treasure", maximize the recovery of resources...

AI Technical Summary

Problems solved by technology

In this context, researchers use microfiltration / ultrafiltration membranes to directly filter sewage, obtain concentrated liquid rich in organic matter and permeate rich in nutrients, and realize simultaneous sewage treatment and resource recovery. High cost of membrane modules, serious membrane fouling and frequent operation and maintenance

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