Integrated reactor and method for removing ammonia nitrogen and organic matter from drinking water

Abstract

The invention relates to an integrated reactor and a method for removing ammonia nitrogen and organic matter from drinking water. The integrated reactor comprises a biological oxidation area and an ultrafiltration membrane filtering area; a tube type static mixer is arranged before the biological oxidation area and the ultrafiltration membrane filtering area which are positioned in the same reaction tank; and the biological oxidation area is positioned between the tube type static mixer and the ultrafiltration membrane filtering area. Organic matter with medium molecular weight or volatile organic matter is adsorbed by activated carbon; ammonia nitrogen and organic matter with small molecular weight is removed by microorganisms on the surface of biofilm packing and powdered activated carbon; and bacteria, microbial films and the like are removed by filtering and an ultrafiltration membrane to ensure safety of the microorganisms. Particulate matter with high density in water, microbialfilms falling off, powdered activated carbon and the like enter a sludge chamber under the gravity action, and are discharged by a sludge discharge pipe. The integrated reactor can be used for drinking water treatment of a polluted water source, and can also be applied to treatment of municipal sewage and recycled water.

Description

technical field [0001] The invention belongs to the field of drinking water purification, and in particular relates to an integrated reactor for removing ammonia nitrogen and organic matter in drinking water that strengthens microbial nitrification, adsorption and membrane separation, and a method for using the integrated reactor to purify drinking water. Background technique [0002] Many urban drinking water sources in my country have persistent or seasonal organic matter, ammonia nitrogen and other pollutants exceeding the standard. Conventional drinking water treatment processes, namely coagulation, sedimentation, filtration and disinfection processes, have limited ability to remove organic matter, especially for medium or small molecular weight organic matter, and have almost no ability to remove ammonia nitrogen. On the other hand, the latest national drinking water standard (GB5749-2006) will be enforced in 2012. How to ensure that the factory water meets the standard...

AI Technical Summary

Problems solved by technology

However, this method still has the following defects: when the concentration of colloidal particles or alum flowers in the raw water is high, the sludge in the reactor needs to be discharged, and the powdered activated carbon will inevitably be discharged during the sludge discharge process. It is difficult to effectively control the process operation, and the adaptability to the process operation of the raw water quality with different turbidity is poor, and the management is complicated; the cost of powder activated carbon Higher; powdered activated carbon particles gather on the surface of the membrane, and may cause physical damage to the membrane surface under the condition of membrane negative pressure suction, affecting the life of the membrane filament; once the membrane filament in the membrane module is broken, the powdered activated carbon with microorganisms on the surface can easily penetrate Ultrafiltration barriers and possible water supply accidents

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