MBR integrated wastewater treatment equipment process principles and characteristics summarized with process flow diagrams

MBR integrated wastewater treatment equipment is a solid-liquid separation of sewage through the membrane module, the sludge back to the bioreactor, and then discharged through the water.MBR wastewater treatment process is also known as the membrane bioreactor, is a new type of wastewater treatment technology by the combination of the membrane separation unit and biological treatment unit. Through the use of membranes, the role of the bioreactor is strengthened, so the application of membranes occupies an important position in MBR integrated wastewater treatment equipment. According to the structure of the membrane can be divided into flat membrane, tubular membrane and hollow fiber membrane, etc., according to the pore size of the membrane can be divided into microfiltration membrane, ultrafiltration membrane, nanofiltration membrane, reverse osmosis membrane and so on. It uses the membrane to intercept macromolecular organic matter in the biochemical reaction pool and activated sludge, eliminating the second sedimentation tank this step, reducing the footprint.

MBR integrated wastewater treatment equipment operation flow diagram:

MBR membrane bioreactor wastewater treatment equipment features:

1, efficient removal of pollutants, capable of removing ammonia and nitrogen and difficult to degrade organic matter, the treatment of good effluent water quality;

2, high sludge concentration, residual sludge production is low, the device has a large volumetric load, occupies a large area Small;

3, conducive to the proliferation of slow or efficient microbial retention, improve the nitrification effect of the system and the ability to treat difficult to degrade organic matter;

4, high degree of automation and control, easy to operate and manage;

5, after treatment, the discharge of water SS and turbidity is close to zero, join the reuse of water reuse equipment can be realized

6, the equipment's The shape of the equipment adopts steel structure, anti-corrosion paint, so the whole equipment is rugged and durable, life expectancy of up to 20 years or more

7, the equipment has a wide range of applications, such as: municipal wastewater treatment and construction of water reuse, industrial wastewater treatment, micro-pollution of drinking water purification, landfill, fertilizer leachate treatment, fecal wastewater treatment, and so on.

MBR (Membrane Bioreactor) process characteristics:

1, the organic matter in the sewage degradation, nitrifying bacteria will be nitrified Nspan-N NO3-, the removal rate of organic matter in more than 95%; ammonia nitrogen removal rate of more than 97%.

2, the pretreatment process is simple, does not require a large number of chemicals, the operation process is simple;

3, high recovery rate, the water recovery rate can reach more than 99%, this flexibility allows the operator to inflow of unpurified water quality deterioration through the reduction of the recovery rate to reduce the diaphragm of the "pressure", but the same amount and quality of purified water. This flexibility allows the operator to reduce the "pressure" on the diaphragm by decreasing the recovery rate if the quality of the incoming unpurified water deteriorates, but at the same time produces the same total quantity and quality of purified water;

4. The system utilizes a logical process monitoring system, including flow transmitters, pressure transmitters, etc. This highly controlled system approach can be used to design a flexible system and improve the low operator interface requirements;

5, air flushing to ensure reliable operation in a variety of inflow conditions;

6, automatic backwash to ensure that the lower over-membrane pressure to improve the overall membrane flux;

7, small footprint, only 10-20% of the traditional process;

8, a long life cycle, but the same total amount and quality of purified water;

6, the system uses a logical process monitoring system, including flow transmitters and pressure transmitters and so on. p> 8, long life cycle, continuous operation time of up to 70,000 hours, wire breakage rate of less than 1%.

MBR process disadvantages:

1, the high cost of the membrane, increasing the cost;

2, the membrane is prone to contamination, to the operation and management of the inconvenience;

3, energy consumption is slightly higher: first of all, the MBR sludge-water separation process must maintain a certain degree of membrane drive pressure; secondly, the MBR pool MLSS concentration is very high, to maintain a sufficient rate of oxygen transmission. Must increase the aeration intensity; and in order to increase the membrane flux, reduce membrane contamination, must increase the flow rate, flush the membrane surface, resulting in MBR energy consumption than the traditional biological treatment process is slightly higher.