SEWAGE TREATMENT PLANT (STP)
Wastewater from sinks, baths, washing machines, toilets and other appliances has to go somewhere. After traversing miles of sewer network, it ends up in sewage treatment plants whose job is to treat and discharge it.
Sewage treatment plants collect, treat, and discharge wastewater, providing a service essential to environmental and public health.
Without adequate treatment, sewage will leach into the environment and contaminate ecosystems. For example, sewage contains bacteria and chemicals that break down using oxygen in the water. In doing so, they use oxygen that fish and aquatic life needs to survive, so it needs treatment to preserve the ecosystem.
Returning sewage/wastewater to a specified quality for safe discharge is the most crucial role of the sewage treatment plant.
Need of an STP
- To clean industry effluent and recycle it for further use.
- To reduce the usage of fresh/potable water in Industries.
- To cut expenditure on water procurement.
- To meet the Standards for emission or discharge of environmental pollutants from various Industries set by the Government and avoid hefty penalties
- To safeguard environment against pollution and contribute in sustainable development.
Process in ETPs
Process in ETPs
- Ratio of COD/BOD
- Monitoring of ETP
- Oxidation and Reduction
- Chemical Coagulation and Precipitation
- Settling Treatment
- Segregation
- Thermal Processes
- Activated Carbon
- Stripping
- Disinfection
- Adsorption
- Sewage Tertiary Treatment
- Solid waste disposal, and
- Colour removal
Types of STPS
Aerobic Reactors
- Activated Sludge Process
- Moving Bio Bed Reactor (MBBR)
- Membrane Bio Reactor (MBR)
- Electro Coagulation System
- Sequential Bio Reactor (SBR)
- Rotating Bio Reactor (RBC)
Anaerobic Reactors
- Anaerobic Lagoons
- Anaerobic filter reactors
- Upflow anaerobic sludge blanket (UASBs)
- Expanded granular sludge beds (EGSBs)
- Anaerobic baffled reactors (ABRs)
We are dealing with Sewage Treatment of industries, residential complexes, hotels, hospitals by providing tailor made solutions. We are designing, manufacturing and commissioning Effluent Treatment Plants/Sewage Treatment Plants. We are also into renovation and reengineering of the existing treatment plants. Chemtech evaluates the client’s facilities and customizes accurate, complaint solutions. The purpose of this step is to ensure efficient, stable operations of treatment facilities. Our customization is available as per require volume from 1KLD to 1000 KLD considering the norms of Pollution Control Board (PCB).