Integrated sequencing-batch method for treating sewage by plant micro-net dynamic membrane and apparatus therefor

Abstract

The invention relates to a method for treating sewage and a device thereof.The method for treating the sewage by integrative sequencing batch botanical bench-scale dynamic membrane is characterized in that the method comprises the following steps: (1) preparation of the device comprises the processes that: a separation bucket is arranged in cavity of a membrane bioreactor; the botanical bench-scale dynamic membrane is arranged in a dynamic membrane filter room which is between a fixed support of the up and under dynamic membrane; (2) sludge is poured into the cavity of the membrane bioreactor to a height of 45 percent to 50 percent of the height of the cavity from an entrance which is on the top of the separation bucket; (3) an outlet valve on a water pipe is closed, and then the sewage is poured into the cavity of the membrane bioreactor to a height of 90 percent to 98 percent of the height of the cavity from the entrance which is on the top of the separation bucket through a sewage inlet pipe; (4) after stirred for 2.0 to 4.0h, aeration is injected into the membrane bioreactor and stirring is kept for 2.0 to 4.0h; (5) after stopping stirring for 1.0 to 2.0h, the outlet valve on the outlet pipe is opened to drain water and aeration supply is stopped; (6) steps (3) to (5) are repeated to carry out the sequencing batch sewage treatment.The invention is characterized by good sewage treatment effect.

Description

technical field [0001] The invention relates to a sewage treatment method and its equipment, in particular to a method and equipment for treating sewage with an integrated sequencing batch type plant micro-network dynamic membrane. Background technique [0002] Membrane bioreactor (MBR) has been widely used in sewage treatment process due to its efficient sewage treatment effect and flexible operation mode. MBR process technology has been maturely applied in various sewage treatment projects. However, MBR also has technical problems such as relatively high cost of membrane module materials, and some integrated and separated MBRs rely on suction pumps to suck out water, resulting in high energy consumption in operation. In view of this, the development of new high-efficiency membrane bioreactors is one of the development directions of MBR technology. In 1966, Mardinkowsky found that the sludge layer trapped on the surface of the membrane would cause an increase in the pressu...

AI Technical Summary

Problems solved by technology

[0005] Although DMBR has several advantages over MBR, there are still several problems that need to be further studied

The process of DMBR generation is easy to cause sludge leakage, and its initial effluent often cannot meet the standard; although domestic and foreign experiments have been carried out on the effect of DMBR on sewage treatment and its influencing factors, the results of the dynamic membrane filter layer on the removal mechanism of pollutants with different particle sizes need to be unified; At the same time, there is a lack of detailed analysis of the economics of DMBR in order to provide a reference for the practical application of DMBR in the future; the reported DMBR membrane base materials mainly include non-woven fabrics, filter cloths, nylon screens, stainless steel wire meshes and other materials, and the development of new high-efficiency and economical The film base material is also an aspect to improve the research and application of DMBR; at present, the DMBR process is single in the experimental stage, and there is a lack of DMBR and other processes, such as SBR, A / O, A 2 / O, EBPR, etc. to improve the removal effect of DMBR on nitrogen and phosphorus in sewage, and to enhance the application value of DMBR process and DMBR combined process in sewage treatment

Images