Lixiviation type film separating system for sewage and waste water high treatment

Abstract

The leaching membrane separating system has settling basin, fine filtering net tank, etc. and includes also anaerobic tank outside the fine filtering net tank for eliminating pollutant and leaching phosphate; aerobic separating membrane tank with separating membrane unit outside the anaerobic tank for eliminating pollutant, phosphate and suspended matter; oxygen-free tank outside the aerobic separating membrane tank for separating nitrogen and oxygen via denitrification reaction and returning the mixed liquid to the fine filtering net tank by means of the returning pump and returning pipe; and distributing pipe connected to the fine filtering net tank for distributing sewage to the anaerobic tank and the oxygen-free tank. The system can prevent impurity from being concentrated and eliminate various suspended matter, organic matter, nitrogen and phosphate and has high sewage and waste water treating efficiency.

Description

technical field [0001] The invention relates to a leaching-type membrane separation system, in particular to a leaching-type membrane separation system for improving sewage and wastewater treatment efficiency. Background technique [0002] Generally speaking, the leaching membrane separation system is a system that filters the particles of sewage and waste water, and at the same time thoroughly purifies the above-mentioned sewage and waste water. [0003] Such as figure 1 As shown, the above-mentioned general leaching type membrane separation system, its grit chamber 10 blocks the inflow of sewage and the rapid flow of waste water, and at the same time, makes the sand or pebbles contained in the sewage settle, and transports the sewage to many The filter screen groove 20 of each filter screen 21, in each filter screen 21, filter out the coarse impurity that contains in the sewage, have removed the sewage of described coarse impurity from described filter screen groove 20 wi...

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Problems solved by technology

[0035] Although this leaching membrane separation system is very effective in removing suspended solids and organic pollutants by means of a separation membrane device, due to the improvement of the water quality standard of the effluent, when the system is used, it cannot fully remove the impurities contained in the mixed solution. A variety of nitrogen or phosphorus, the discharged treated water cannot meet the stated standards, which is not satisfactory

[0036] That is, when only the separation membrane device is used, there are limitations in removing nitrogen or phosphorus contained in sewage and wastewater. Since the nitrogen cannot be completely eliminated, only nitrification is caused, which becomes a form that is easily absorbed by microorganisms in the water. As for the phosphorus, microorganisms can only absorb a small amount of phosphorus, so there is a problem that it cannot be completely removed.

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