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막 생물 반응기 MBR의 공정 및 새로운 공정

시간 : 2020-04-16 조회수 : 42

Membrance Bioreactor Reactor (MBR로 약칭)는 막 분리 및 생물학적 처리 기술로 구성된 새로운 폐수 생물학적 처리 프로세스입니다.

 

There are many types of membranes, which are classified according to the separation mechanism, including reaction membranes, ion exchange membranes, and permeable membranes; according to the nature of the membranes, there are natural membranes (biological membranes) and synthetic membranes (organic membranes and inorganic membranes); Structural types are classified into flat type, tube type, spiral type and hollow fiber type.

 

1980 년대 이후, 막 생물 반응기는 점점 더 많은 관심을 받아 연구 핫스팟 중 하나가되었습니다. 현재이 기술은 6m3 / d에서 13000m3 / d 범위의 규모로 미국, 독일, 프랑스 및 이집트와 같은 XNUMX 개 이상의 국가에서 사용되었습니다.


 

MBR에 대한 중국의 연구는 XNUMX 년도 채 안되지만 진전은 매우 빠르다. MBR에 대한 국내 연구는 크게 여러 측면으로 나눌 수 있습니다.

 

(1) Explore the combination of different biological treatment processes and membrane separation units. The biological reaction treatment process extends from the activated sludge method to the contact oxidation method, biofilm method, the combined benchtop process and two-phase combination of activated sludge and biofilm Anaerobic process;

 

(2) Research on factors, mechanisms and mathematical models that affect the treatment effect and membrane fouling, explore suitable operating conditions and process parameters, reduce membrane fouling as much as possible, and improve the processing capacity and operational stability of membrane modules;

 

(3) Expand the application scope of MBR. The research object of MBR expands from domestic sewage to high-concentration organic wastewater (food wastewater, beer wastewater) and refractory industrial wastewater (petrochemical wastewater, printing and dyeing wastewater, etc.), but the treatment of domestic wastewater is the Lord.

 

What are the characteristics of the MBR process?

 

전통적인 생화학 수처리 기술과 비교하여 MBR에는 다음과 같은 주요 기능이 있습니다.

 

1. Efficient solid-liquid separation, the separation effect is much better than the traditional sedimentation tank, the effluent water quality is good, the effluent suspended matter and turbidity are close to zero, can be directly reused, realizing the recycling of sewage.

 

2. The high-efficiency interception function of the membrane allows microorganisms to be completely trapped in the bioreactor, achieving complete separation of the reactor hydraulic residence time (HRT) and sludge age (SRT), and the operation control is flexible and stable.

 

3. Since MBR combines the aeration tank and the secondary settling tank of traditional sewage treatment into one, and replaces all the process facilities of tertiary treatment, it can greatly reduce the area and save the investment in civil engineering.

 

4. Conducive to the interception and reproduction of nitrifying bacteria, the system has high nitrification efficiency. It can also have the functions of deamination and dephosphorization by changing the operation mode.

 

5. Since the mud age can be very long, the degradation efficiency of refractory organics is greatly improved.

 

6. The reactor is operated under high volume load, low sludge load and long sludge age. The remaining sludge output is extremely low. Since the sludge age can be infinitely long, in theory, zero sludge discharge can be achieved.