Integrated water purification processing method and device of ultrafiltration membrane coagulation/bioreactor

Abstract

The invention discloses an integrated water treatment method of ultrafiltration membrane coagulation / biological reactor and a device thereof. The invention, the coagulation, and the biological reaction is combined and completed in a same reaction cell. Raw water enters the ultrafiltration membrane coagulation / biological reactor; activated sludge microorganism in the reactor biologically degrades ammonia nitrogen and organic matters with low molecular weight in the water; a coagulant adding system adds coagulant and adsorbent in the reactor to remove the organic matters with high molecular weight and phosphorus; at last, the immersion ultrafiltration membrane components arranged in the reactor carries out the solid-liquid separation to prepare drinking water with excellent quality. A perforated aeration pipe is arranged on the lower part of the reactor to be connected with a sludge discharge pip to discharge the residual sludge in the reactor regularly. In order to ensure the membrane flux, a membrane reverse washing system carries out the reverse washing for the ultrafiltration membrane components regularly. The invention combines the coagulation effect and the biological effect with the ultrafiltration physical interception effect so that the manufacturing cost and the operation cost are remarkably reduced, while the invention is a novel advanced purification process of the drinking water with the advantages of high efficiency, energy saving, convenient maintenance and management.

Description

technical field [0001] The invention belongs to water treatment technology, and in particular relates to a drinking water advanced purification technology, in particular to an ultrafiltration membrane coagulation / bioreactor integrated drinking water advanced treatment method and a device thereof. Background technique [0002] Since the protection of water sources has not received enough attention for a long time, drinking water sources are generally polluted by nitrogen, phosphorus and organic matter, and many types of trace organic pollutants that are toxic to human body have been found in drinking water, such as carcinogenic, teratogenic, Mutagenic substances, etc. and chlorinated disinfection by-products. This makes conventional drinking water treatment processes, such as coagulation, sedimentation, filtration, and disinfection treatment processes, face severe challenges, and it is increasingly difficult for the effluent to meet the requirements of drinking water quality ...

AI Technical Summary

Problems solved by technology

However, the ability of ultrafiltration alone to remove dissolved organic matter in water is very limited, especially small molecular weight and easily biodegradable organic matter, which can hardly be removed by ultrafiltration

However, this part of small molecular weight organic matter will cause water biological stability problems, causing bacteria to multiply in the pipe network again, deteriorating water quality

At the same time, ultrafiltration cannot remove nitrogen and phosphorus.

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