Is MABR technology working well in India?
The membrane aerated biofilm reactor (MABR) process is a cutting-edge technology that allows conventional activated sludge plants to be upgraded for nitrogen removal and capacity expansion in existing tank volumes while significantly reducing aeration energy requirements.
MABR technology uses self-respiring membranes to achieve aeration, resulting in "significantly lower energy usage for wastewater treatment because air is not required to be blown into the depths of the water to provide oxygen for the process." The MABR module effectively works like the human lung, operating at atmospheric pressure, and is thus extremely energy efficient. This is in comparison to activated sludge, in which high-pressure air is forced through fine bubble diffusers, or MBR, in which great force is used to achieve successful treatment. The fixed film treatment process has the advantages of longer sludge ages, avoidance of washout due to increased hydraulic load, and enhanced process resilience.
Unique biological process:
Activated sludge treatment has long been used for aerobic wastewater treatment, but the aeration stage is particularly energy-intensive and thus costly. MABR is a self-respiring and an energy-efficient option that produces high-quality effluent. The MABR technology is based on passive aeration, or the diffusion of oxygen across membranes.
Throughout the process, oxygen is constantly delivered to the fixed nitrifying biofilm that forms on the wastewater side of the membrane, while de-nitrification occurs in the anoxic bulk liquid. The MABR process is unique in that it provides highly efficient biological nutrient removal, resulting in operational savings and minimal footprint requirements, making decentralised treatment more feasible.
MABR technology in India:
MABR Technology has proven to be effective in the treatment of industrial wastewaters from the food and beverage, landfill leachate, pharmaceutical, and semi-conductor industries. It has the ability to incrementally increase the capacity of an operating wastewater treatment plant without the need for additional tanks, allowing operators to increase capacity as needed while avoiding lengthy planning and construction periods.
MABR technology can provide following benefits:
Nitrification and de-nitrification
A biofilm that formed on the spirally wound membrane allows for high nutrient removal via simultaneous nitrification de-nitrification (SND).
MABR modules use low-pressure passive aeration, which reduces aeration energy consumption by up to 90%. Because of the low energy consumption, decentralised treatment can take place away from the power grid.
High effluent quality
The efficient nutrient removal of MABR results in high-quality water suitable for irrigation or discharge into the environment.
Low maintenance and operation costs
MABR's simple design results in low maintenance and operation costs, and the systems can be operated and controlled remotely. MABR also lessens the need for additional carbon.
Low odour and noise
Passive aeration not only saves energy, but it also reduces noise and odour levels for a more neighbourly operation.
Flexibility and scalability
MABR solutions are available as upgrades for existing plants as well as decentralised, scalable, and easily portable systems packaged in standard shipping containers.
MABR DELIVERS SIMPLE, ENERGY-EFFICIENT WASTEWATER TREATMENT
Netsol Water is also working to provide such technologies from small- to medium-capacity systems that save up to 90% of the energy used for aeration. Also, because of its energy efficiency, MABR can be operated using alternative energy sources off the grid, making it ideal for decentralised treatment.