MBR (Membrane Bioreactor) sewage treatment equipment combines membrane separation technology with biological treatment technology to construct an efficient sewage treatment system. The process flow is divided into three stages:
1、 Technical principles and process flow
MBR (Membrane Bioreactor) sewage treatment equipment combines membrane separation technology with biological treatment technology to construct an efficient sewage treatment system. The process flow is divided into three stages:
Pre treatment: The sewage is intercepted by a grid to remove large particles and impurities before entering the regulating tank, completing the homogenization of water quality and quantity.
Biodegradation: Wastewater enters a bioreactor and undergoes microbial degradation of organic matter in both the aerobic zone (A zone) and the aerobic zone (O zone), completing the denitrification process.
Membrane separation purification: Ultrafiltration membrane components (usually made of PVDF material) intercept activated sludge and large molecular pollutants, achieving efficient solid-liquid separation, and the effluent turbidity can be reduced to below 0.5NTU.
This technology replaces traditional secondary sedimentation tanks with membrane components, increasing sludge concentration to over 10g/L and significantly enhancing treatment efficiency.
2、 Core technology innovation
Membrane materials and anti pollution technology
By using modified PVDF hollow fiber membranes combined with pulse aeration cleaning technology, the membrane flux attenuation rate is reduced by 60%, and the operating cycle is extended to 3-5 years.
The aeration system has both oxygen supply and membrane surface cleaning functions, reducing fouling and blockage by rubbing the membrane fibers with airflow.
Intelligent control
The integrated online monitoring system tracks more than 20 parameters such as dissolved oxygen and membrane flux in real-time, and remotely regulates the aeration intensity and reflux ratio through a cloud platform.
Realize full process automation operation, with an annual failure rate of less than 0.5 times, and reduce operation and maintenance costs by 45% compared to traditional processes.
Efficiency improvement
COD、 The removal rate of ammonia nitrogen exceeds 95%, and the effluent quality meets the Class IV surface standard. It can be directly reused for industrial cooling, landscape water replenishment, and other scenarios.
The reduction of sludge load results in a 30% -50% decrease in excess sludge production, solving the problem of traditional sludge disposal processes.
3、 Application scenarios and practical cases
Industrial wastewater treatment
The case study of oily wastewater treatment in an automobile manufacturing park shows that the effluent COD is stable below 30mg/L, and the shock load resistance capacity reaches 50% of water fluctuation.
Medical wastewater treatment
After the application of MBR in tertiary hospitals, the number of fecal coliforms is less than 10/L. Combined with a dual disinfection system of UV and sodium hypochlorite, it meets strict hygiene standards.
Rural distributed governance
A county in Zhejiang province has adopted buried MBR equipment, reducing the construction cost per ton of water to 6500 yuan and consuming only 0.6 kWh/m³of electricity, achieving integration with the surrounding landscape.
Municipal upgrading and renovation
A sewage treatment plant in a certain city has replaced traditional processes with MBR, resulting in a two-fold increase in treatment scale, a 70% reduction in land area, and a leap in water quality from Class B to Class IV.
4、Future Development Trends
Breakthrough in Materials Science: Nano coating technology enhances membrane flux and anti pollution performance, and research and development of new ceramic membrane materials expands high-temperature wastewater treatment scenarios.
Energy optimization: coupling photovoltaic power generation with energy-saving aeration systems to promote the transformation of sewage treatment plants towards energy self-sufficiency.
Intelligent upgrade: AI algorithm predicts membrane fouling cycle, blockchain technology realizes water quality data traceability, and builds a full lifecycle management system.
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