Treatment Process Technology
Activated Sludge Process – Extended aeration
- Widely accepted.
- Based on the concept of suspended growth.
- Aeration either by Surface Aerators or Diffused Aeration System.
- Requires sludge recycling and Sludge monitoring.
- Augmentations are possible with addition of media
SEQUENCING BATCH REACTOR – SBR
- Collection, Equalization, biological treatment, and secondary clarification can be achieved in a single reactor.
- Operating flexibility and control.
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Achieved by varying the number of cycles and levels.
- Minimal footprint.
- Potential capital cost savings by space saving and eliminating clarifiers and other equipment.
Moving Bed Bio-Reactor (MBBR)
- Compact and Modular
- Being used where space is a real constraint
- Attached growth process utilizes special plastic media for retaining more biomass in the attached form.
- However media needs to be changed / Topped up on an average of 4 – 6 years depending upon the operational characteristics.
- The units shall be either in MS or in RCC based on customer need.
FBBR
- No recycle of sludge and
- monitoring of MLSS except during start up
- Retention time : 6 – 8 hours
- Reduced power consumption
- Low sludge production
- High organics loading is possible
- Compact Tube / Inclined plate settlers used in place of huge clarifiers.
Membrane Bio-Reactor (MBR)
- Superior Treated water quality
- Improves down stream RO performance ( longer life for RO membranes, higher flux, fewer cleaning)
- Best suited for plant capacity augmentation where space is a constraint.
- Unlike ASP it does not require clarifier, and filtration system
- Increase volumetric loading
- Easy sludge handling (Less sludge wasting due to higher Sludge age)
- Removal of micro nutrients possible.
