Efficient Wastewater Treatment with Advanced MBR System

With increasing pressure from population growth, changing weather patterns, and pollution, the global issue of water scarcity is becoming more severe. Membrane BioReactor (MBR) technology offers an excellent solution to address this challenge and provides the potential to reuse treated wastewater.

MBR system combines bioremediation and the use of membranes to remove solids and bacteria during treatment. This technology uses biofilms to prevent solids and bacteria from passing through, creating clean water to be treated.

Structure

Bar screen. Remove large debris from wastewater, such as plastic bags, leaves, and stones and extend membranes' service life.
Anoxic tank. Used for denitrification, primarily to remove nitrates and nitrites from wastewater. In this tank, denitrifying bacteria convert nitrates and nitrites into nitrogen gas in an oxygen-deprived environment, aiding in nitrogen removal.
Aerobic tank. Used for aerobic biological treatment, mainly to degrade organic pollutants in the wastewater. This tank contains aerobic microorganisms that decompose organic matter into carbon dioxide and water with the help of aeration equipment, thus reducing the organic content in the wastewater.
MBR tank. Integrates biological treatment and membrane separation. In this tank, wastewater undergoes biological degradation, and membrane modules are used for solid-liquid separation, resulting in high-quality effluent.
MBR module. It has hollow fiber, flat sheet and multi-tube three types. Used for solid-liquid separation. The membrane module filters out suspended solids, bacteria, and other tiny particles from the wastewater, producing very clear treated water.
Clean water tank. Stores the treated water from the MBR process. The water quality here is usually high, and it can be further treated for reuse or discharged.
Control Room. Used to monitor and control the entire MBR system's operation. The control room is equipped with various instruments and control devices, allowing operators to monitor real-time status, adjust parameters, and handle faults, ensuring stable system operation.

Advantage Of MBR Process

Highest degree treated water in terms of low turbidity, TSS, BOD, and bacteria
More robust process. Ability to absorb shock loads
Reusable quality treated water, saves freshwater requirement. Treated water can be directly reused for many applications
Efficient in Biological Nutrient Removal. Eliminates environmental hazard of surrounding due algae growth
Smaller Footprint. Low hydraulic retention time and hence low foot (area) requirement.
Low Maintenance. Automated operation, minimum chances of human error.
Retrofit/Upgrade. Due to high MLSS system can be upgraded to high capacity.
Reduced Disinfection Requirements. Membrane barrier separates bacteria and virus up to log 4

Working Principle

The wastewater goes through a fine screen for the removal of big objects that might cause damage to the downstream equipment.
Then it enters an Anoxic Zone for the treatment of nitrogenous matter and phosphate following an Aerobic Zone where microorganisms with the help of the oxygen coming out of the FBD will digest the organics matter in the wastewater and clump together as they do so, producing a sludge.
This sludge will enter the Immersed Membrane Bioreactor where the membrane will separate the solids and microorganisms from water.
The reflux pump designed Q=2 times of output, from MBR Tank to Anoxic tank and excess sludge will be discharged.
The treated water will be added as chemicals to provide more cleaner water quality (optional).

Applications

Industrial Wastewater Treatment. Industrial wastewater may include high organic loadings and chemical substances that are particularly difficult to handle or degrade, MBR system can effectively remove pollutants and discharge qualified and standard wastewater.
Municipal Wastewater Treatment. MBR systems were originally developed for municipal wastewater treatment applications, with a focus on water reuse and recycling. MBR system are effective and provide qualified reuse water for irrigation, cooling, landscaping, street cleaning, building dust suppression, or other purpose. This can help to utilize water resources and solve scarcity challenges.
Landfill leachate treatment. Landfill leachates usually contain high concentrations of organic and inorganic compounds. MBR systems can be used combined with nanofiltration and reverse osmosis system for inorganics and heavy metal removal, such as nanofiltration and reverse osmosis processes.
Seawater treatment. MBR technology can also be applied to treat seawater and turn it into domestic water.

Related Projects

The MBR system site of china urban domestic sewage treatment.

MBR System for China Urban Domestic Sewage Treatment