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High-salinity wastewater treatment device and method combining bacteria-algae symbiosis method and membrane biofilm reactor

A membrane reactor and high-salt wastewater technology, applied in the field of sewage treatment and high-salt wastewater treatment, can solve the problems of low operating energy consumption and small process area, and achieve low operating energy consumption, low infrastructure cost, nitrogen and phosphorus Strong removal effect

Inactive Publication Date: 2020-06-09
GUANGDONG UNIV OF TECH
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AI Technical Summary

Problems solved by technology

At present, there is no report on the combination of bacteria and algae symbiosis with membrane biofilm reactor (Membrane Biofilm Reactor, MBfR) applied to high-salt wastewater. Therefore, a process with high nitrogen and phosphorus removal rate, low operating energy consumption, and The new bacteria and algae symbiotic membrane biofilm reactor high-salt wastewater treatment process and equipment with a small footprint have important research significance and broad application prospects

Method used

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  • High-salinity wastewater treatment device and method combining bacteria-algae symbiosis method and membrane biofilm reactor
  • High-salinity wastewater treatment device and method combining bacteria-algae symbiosis method and membrane biofilm reactor
  • High-salinity wastewater treatment device and method combining bacteria-algae symbiosis method and membrane biofilm reactor

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Experimental program
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Effect test

Embodiment 1

[0028] Such as figure 1 Shown is a high-salt wastewater treatment device that combines the bacteria and algae symbiosis method with the membrane biofilm reactor. Mainly consists of membrane biofilm reactor (MBfR) 1, gas separation membrane 2, biofilm 3, water storage tank 4, pressure regulator valve 5, air pressure gauge 6, pressure relief valve 7, LED light 8, outlet pipe 9, water inlet pump 10 , Outlet pump 11 and circulating pump 12. Membrane biofilm reactor 1 is a hollow cylindrical cavity made of transparent plexiglass, with a cylindrical support liner inside the cavity, an inlet pipe and a water outlet pipe on the top of the chamber, and a water inlet pipe and a water outlet pipe on the bottom of the chamber. The air outlet pipe, the pressure stabilizing valve 5 and the air pressure gauge 6 are arranged on the air inlet pipe, the pressure relief valve 7 is arranged on the air outlet pipe, and the water inlet pipe is provided with a valve and a circulation pump 12; the g...

Embodiment 2

[0037] Such as figure 2 As shown, a high-salt wastewater treatment device combining the symbiosis method of bacteria and algae with the membrane biofilm reactor has basically the same structure as that of Example 1, the only difference is that there is no cylinder inside the chamber of the membrane biofilm reactor. Shaped support liner, the gas separation membrane 2 is arranged in a direction parallel to the water flow direction; the working principle and operation method of the device are the same as in the specific implementation 1.

[0038] This embodiment still uses high-salt wastewater, the removal rate of COD can reach 91±4.2%, the removal rate of total nitrogen can reach 85±4.5%, and the removal rate of phosphorus can reach 81±2.3%, which is 15-25% higher than that of the traditional activated sludge method. %.

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Abstract

The invention discloses a high-salinity wastewater treatment device and method combining a bacteria-algae symbiosis method and a membrane biofilm reactor. The device comprises a membrane biofilm reactor, a gas separation membrane, a bacteria-algae symbiotic bio-membrane and a light source. The membrane biofilm reactor is a cavity made of a transparent material, an air inlet pipe and a water outletpipe are respectively arranged at the top of the cavity, and a water inlet pipe and an air outlet pipe are respectively arranged at the bottom of the cavity. The gas separation membrane is casted into a membrane assembly and is arranged in the cavity, and the two ends of the membrane assembly are connected with the air inlet pipe and the air outlet pipe respectively. The bacteria-algae symbioticbiological membrane grows on the surface of the gas separation membrane. The light source is arranged outside the cavity and is used for uniformly irradiating the membrane biofilm reactor. According to the invention, a bacteria-algae symbiotic system is combined with a membrane biological process, so that the technical defects of poor salt tolerance of bacteria, low nitrogen and phosphorus removalrate, high operation energy consumption and the like when the high-salt wastewater is treated by a traditional process are overcome, an economic and efficient treatment technology is provided for high-salt wastewater treatment, and the device and the method have a relatively great application prospect.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to the technical field of high-salt wastewater treatment, and more specifically, to a high-salt wastewater treatment device and method that combines a bacteria and algae symbiosis method with a membrane biofilm reactor. Background technique [0002] With the continuous increase of my country's population and the rapid development of the economic system, the discharge of wastewater from various industries in society is increasing. The latest data from the National Bureau of Statistics shows that in 2017, my country's total wastewater discharge was about 69.966 billion tons, of which total nitrogen and total phosphorus discharges reached 2.1646 million tons and 118,400 tons respectively. The water body will accelerate the deterioration of the environment of the receiving water body and increase the chance of eutrophication of the water body. The "China Water Resources Bulleti...

Claims

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Application Information

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IPC IPC(8): C02F3/10C02F3/32C02F3/34
CPCC02F3/102C02F3/325Y02W10/10
Inventor 何頔廖怀玉孙丽马金星
Owner GUANGDONG UNIV OF TECH
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