SG Watertech Design, Manufacture, Supply, do Erection and Commissioning, Repair/Refurbish, take AMC (annual maintenance contract) of STP (Sewage Treatment Plant) for treating sewage discharged from commercials buildings, IT Parks, Housing Societies, Hotels, Malls/Shopping complexes, Hospitals.
Major processes/technologies related to STP design and operations are:
- Moving Bed Bio-reactor – MBBR
- Membrane Bio-reactor - MBR
- Sequential Bio-reactor – SBR
- Activated Sludge Process – ASP
- Treatment process includes -
- Biological processes.
- Physical equipment.
- Chemical treatment.
Physical water treatment typically consists of sedimentation, filtration techniques that involve the use of screens, sand filtration/ cross flow filtration membranes.
- Screens: Typically used as a pretreatment method to remove larger suspended material.
- Sand and/or Multi Media Filtration: Frequently used to filter suspended solids. Smaller suspended solids and dissolved solids are often able to pass through these filters, requiring secondary filtration like Activated Carbon treatment for absorption of further impurities.
- Membrane Filtration: Utilizes barrier (microfiltration, ultra-filtration-UF) or semi-permeable (nano or reverse osmosis-RO) membranes to remove suspended solids and total dissolved solids, respectively.