• CSIR - Central Salt & Marine Chemicals Research Institute
  • G20
Membranes, Resins & Materials for water desalination, water purification and separation processes

Title of Process/ Know-how/ Product/Design/Equipment

Decentralized Multistage Constructed Wetland (DMCW) for Sewage/Greywater Treatment, Use & Circular Economy

  • IPR
    IPR Status & Details:
  • IN 202111001294
Application/Uses/Problem being addressed
  • The technology can be used in sectors like  municipalities, urban development units, real estate, small to medium scale residential communities, apartments for sewage/grey water treatment; and agricultural & storm water treatment & use.
  • Using the treated wastewater for horticulture, gardening, floriculture, aquaculture, indirect potable use etc.
  • Reducing dependency on fresh water resources
  • Protecting the environment from contamination due to untreated discharge of sewage.
    • Salient Technical Features including Competing Features/ Impact
  • The system is free from clogging
  • An antibacterial device filled with antibacterial granules is used finally to kill the residual bacteria from the treated wastewater 
  • Running life: >15 years
  • Minimal electrical/mechanical inputs
  • Pulling carbon out of the atmosphere
  • Treated water quality follows CPCB standards
    • TRL Level & Scale of Development:
    TRL 6

    Technology demonstrated in relevant environment (3600 LPD plant at CSIR-CSMCRI office campus; 3000 LPD plant at CSMCRI Scientist apartment colony); economic model prepared for full scale validation.

    Business scope & opportunity (in terms of scale, cost, market etc.):
    • The technology can be used in following sectors:  Municipalities, urban development units, real estate, small to medium scale residential communities, apartments for sewage/grey water treatment; and agricultural & storm water.
    • Capability: CSMCRI can design for small to medium scale i.e. 2 to 100 KLD plants
    • Market:  The system design is made based on Indian climatic conditions, therefore, it can be installed in any part of India, which are facing water scarcity problems.
    Environmental Considerations:
    • Protecting the environment from contamination due to untreated discharge of sewage, grey water etc.
    • The DMCW technology focuses on UN SDGs like clean water & sanitation, sustainable communities and cities, sustainable production and consumption and food security
    • The DMCW technology achieves national mission like Swachh Bharat
    Status of Licensing:
    Ready for licensing
    Status of Commercialization:
    Not applicable
    Major Raw Materials Needed

    Specific plants species, media/substrate, antibacterial granules, etc.

    Major Plant Equipment and Machinery Required

    Civil works (optional), Media/substrate, Plants, Antibacterial granules

    Techno-Economics

    Approximate cost: 5-10 KLD = ₹5 lakhs; Cost will be reduced for larger ones.

    Technology Package

    Know how & design of the system;  Plants species & antibacterial granules

    DMCW