Treatment method for wastewater in low-temperature region by using ultrasonic membrane assembly, and device thereof
A sewage treatment device, ultrasonic technology, applied in chemical instruments and methods, aerobic and anaerobic process treatment, membrane technology, etc., can solve the problems of poor operation of traditional sewage treatment facilities, achieve excellent membrane filtration effect, improve enzyme Promoting reactions and microbial growth and metabolic activity, promoting the effect of pollutant potency
Active Publication Date: 2015-11-25
CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD
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[0004] The purpose of the present invention is to solve the problem of poor operation of traditional sewage treatment facilities in low-temperature areas, and provide a method and device for treating sewage in low-temperature areas with ultrasonic membrane modules with low operating costs, convenient operation, easy maintenance, and high disposal efficiency
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[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0017] look first figure 1 , figure 1 The structure of the sewage treatment device in which the ultrasonic treatment and the membrane reactor are combined with each other of the present invention is shown. As can be seen from the figure, the structural main body of the device of the present invention mainly includes the regulating tank 2 and the membrane reactor 10, and the sewage passes through the The water pipe 1 enters the regulating tank, and then is lifted and transported into the membrane reactor 10 by the lift pump 3. The membrane reactor 10 is a membrane tank structure, and a membrane module 5 is arranged inside, and an aeration and backwashing pipeline is arranged at the bottom of the membrane reactor. The blower 8 and the backwash water pump 9 are provided with an outlet pipe behind the membrane reactor 10, and an outlet pump 11 is...
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The invention discloses a treatment method for wastewater in a low-temperature region by using an ultrasonic membrane assembly, and a device thereof. The method in the invention adopts mutual combination of ultrasonic treatment and a membrane reactor for treating the wastewater. The method comprises the following steps: introducing the wastewater into a microorganism-filled membrane pool and carrying out microbiological treatment, then intermittently aerating the membrane pool from the bottom part of the membrane pool via an air blower so as to form shortcut denitrification, and discharging the treated wastewater through lifting by a water pump; subjecting the membrane assembly in the membrane pool to air-water backwashing via the air blower and a backwashing pump when wastewater outlet rate is not up to standard; carrying out ultrasonic radiation through opening of an ultrasonic generator in operation process so as to reduce membrane pollution; and real-timely detecting pH and ORP values of the wastewater, and timely adjusting the pH and ORP values in a normal range through adjustment of the air blower and the backwashing pump. The treatment method provided by the invention employs ultrasonic wave to reinforce the treatment effects of the treatment membrane bioreactor at the same time. Meanwhile, ultrasonic treatment can improve activity of enzyme and is favorable for growth of microorganisms at the same time, thereby reinforcing degration efficiency of the microorganisms to pollutants.
Description
technical field [0001] The invention relates to a method and a device for treating sewage in a low-temperature area with an ultrasonic membrane module, belonging to the technical field of water treatment in environmental engineering. Background technique [0002] At present, sewage treatment facilities generally adopt the activated sludge method. A large number of microorganisms in the activated sludge assimilate at a suitable temperature to decompose the organic matter in the sewage to obtain energy to achieve the purpose of self-reproduction. However, in low-temperature areas, the temperature is low and the microbial activity of activated sludge is low, which will greatly reduce the effect of nitrification, and the NH in the effluent will 4 + -N and total nitrogen cannot reach the standard; the temperature of domestic sewage is low, the viscosity becomes larger, the diffusion and sedimentation of organic matter in sewage are slow, and it is easy to cause sludge swelling o...
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IPC IPC(8): C02F3/30B01D65/08
Inventor 张奎
Owner CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD