Improved MUCT technology and device

A technology of a process device and a stirring device, applied in the field of biological sewage treatment, can solve the problems of increased water treatment cost and low reaction speed, and achieve the effects of preventing further harm, high nitrous acid accumulation rate, and maintaining nitrous acid accumulation rate.

Active Publication Date: 2007-01-31
JIANGSU YULONG ENVIRONMENTAL PROTECTION
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Problems solved by technology

Oxygen consumption in the whole process of nitrification causes a significant in

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  • Improved MUCT technology and device

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[0037] The improved MUCT process operation steps refer to the appendix figure 1 . This process method is based on the order of phosphorus removal and nitrification reactions in the traditional MUCT nitrogen and phosphorus removal system, and controls the nitrosation and nitrification that occur sequentially in the aerobic nitrification process in two reactors, forming a two-stage process. Aerobic nitrification process. In order to prevent the influence of dissolved oxygen on anoxic phosphorus uptake, a deoxygenation reactor is set up after the first aerobic reactor, and the dissolved oxygen in the reflux liquid is reduced to the minimum. At the same time, the reflux of the aerobic nitrification liquid originates from the deoxygenation reactor. The device adopted in the technical solution of the invention is a denitrification phosphorus removal process device capable of simultaneously realizing short-range nitrification and using nitrite as an electron acceptor.

[0038] The...

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Abstract

The present invention relates to an improved MUCT process and equipment, belonging to the field of sausage treatment technology. It is characterized by that the aerobic reactor is divided into two stages, between two aerobic reactors a deoxygenation reactor is set,and every aerobic reactor is equipped with an independent gas flow controller. In first aerobic tank it can control low dissolved oxygen to implement short range nitrification and make ammoniac nitrogen be oxidated into nitrite, in second aerobic tank it applies high dissolved oxygen to ensure that the residual nitrite can be oxidated into nitrate. Said equipment also includes a second an aerobic reactor. Besides, said invention also provides the concrete function and action of the deoxygenation reactor and said second anaerobic reactor.

Description

technical field [0001] The invention relates to a sewage biological treatment process method and device, which can simultaneously realize short-range nitrification and denitrification phosphorus removal with nitrite as an electron acceptor, belonging to the field of sewage biological treatment. Background technique [0002] The innovative Modified University of Cape Town process in South Africa, referred to as the MUCT process, which appeared in 1990, is one of the earliest processes for simultaneous biological nitrogen and phosphorus removal, and is currently the most widely used process in various countries. [0003] The MUCT process has an anaerobic zone, two anoxic zones, an aerobic zone and a sedimentation zone in sequence, and activated sludge exists in each zone. The process is equipped with three return pipelines, which are: the return of the mud-water mixture from the first anoxic zone to the anaerobic zone, the return of the mud-water mixture from the aerobic zone ...

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Application Information

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IPC IPC(8): C02F3/30
Inventor 彭永臻崔有为叶柳
Owner JIANGSU YULONG ENVIRONMENTAL PROTECTION
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