The effect of operation conditions of flat-sheet MBR on self-formed secondary membrane and the removal efficiency of pollutants by self-formed secondary membrane were studied.

The system used MBR membrane process and ozone process.

Study was made on the chemical removal of phosphorus in membrane bioreactor (MBR),because insoluble metal phosphate is hard to permeate ultrafiltration membrane.

Recently, with the development of auto-control and membrane production technology, Cyclic Activated Sludge System(CASS) and Membrane Bioreactor(MBR) are given more and more attention because of their particular advantages.

Factors affecting critical flux in submerged flat membrane bioreactor;

Furthermore,when the laminar flow boundary layer thickness on the surface of flat membrane came up to the thickness of precoated dynamic membrane(PDM),the steady aeration intensity was calculated by using the boundary layer theory in the Newtonian hydrodynamics.

The optimal run/off time of PVDF flat membrane with cut-MW 140000 and metal flat membrane with 300-mesh was analyzed through theoretical calculation and the calculated results were verified through test.

PVDF hollow fiber membrane module and PTFE flat membrane module were compared in the vacuum membrane distillation processes for brine from SWRO desalination process.

Optimized study on operational conditions of flat sheet membrane coupled sludge thickening;

In the experiment, the effect of dosing diato maceous earth on the flux of flat sheet membrane was studied under the conditions of different sludge concentration.

In order to solve the problems of the conventional gravity sludge thickening,the process of flat sheet membrane for sludge thickening(MST) was used to thicken aerobic activated sludge.