Water & Waste Waster Engineering

Salvaging Water In All Forms, By All Means

Felix Industries offers a comprehensive range of Water Cycle Management Solutions, covering every aspect from the production and supply of drinking water to the collection, treatment, recovery, and recycling of wastewater. Our expertise in Waste Water Treatment enables us to provide tailored solutions that meet the needs of municipalities, industrial houses, and other organizations, including:

  • Engineering, designing, and building treatment plants
  • Drinking water and industrial process water production plants
  • Wastewater decontamination plants
  • Recycling plants for wastewater and industrial effluents
  • Operation, maintenance, and optimization of treatment plants
  • Plants producing ‘green’ energy from wastewater and sludge (e.g., anaerobic digestion, cogeneration, micro turbines)
  • Product recovery plants from effluents
  • Zero Liquid Discharge (ZLD) standard achievement plants

Sewage Treatment Plants

Sewage treatment involves removing contaminants from wastewater, primarily from household sewage, through physical, chemical, and biological processes. The treated wastewater (effluent) is environmentally safer, while the by-product, sewage sludge, undergoes further treatment before disposal or land application.

Sewage Treatment Phases:

  1. Pre-Treatment:

    • Large solids and grit are removed by screening and disposed of in landfills.
    • Fat and grease are also removed before primary treatment.

  2. Primary Treatment:

    • Solids sink to the bottom, and oil and grease float to the surface.
    • The combined solids and scum form sludge, which is removed.

  3. Secondary Treatment:

    • Sludge undergoes chemical decomposition in heated tanks with micro-organisms, producing biogas used for electricity generation.
    • Liquid is treated by bacteria and then sent to oxidation ponds for further breakdown of organic matter and destruction of harmful bacteria through solar UV light.

Sewage Treatment Technologies

  1. MBBR (Moving Bed Bio Reactor) Technology:

    • Activated sludge aeration systems use inert media to enhance contact between bacteria, oxygen, and influent water, significantly reducing BOD and COD levels.
    • Advantages include efficient carbonaceous matter reduction, lower energy consumption, and consistent outlet quality.

  2. Solido Treatment System:

    • A Sequencing Batch Reactor system with two treatment stages: primary treatment and the SBR phase.
    • Advantages include adaptable operation, efficient biological treatment, and minimized excess sludge.

  3. DAF (Dissolved Air Flotation) Technology:

    • Uses coagulants and flocculants to aggregate particles, which are then floated to the surface by air bubbles for removal.
    • Advantages include low capital investment, continual self-cleaning, minimal maintenance, and high-quality clarified water.

  4. MBR (Membrane Bio Reactor) Technology:

    • Submerged hollow tube membranes separate treated water from activated sludge, resulting in high-quality purified water.
    • Advantages include elimination of clarifiers, reduced sludge generation, and long service life of membranes.

  5. Trickling Filters:

    • A fixed-bed biological reactor where pre-settled wastewater is sprayed over a filter, allowing biofilm to degrade organics aerobically.
    • Advantages include resistance to shock loadings, efficient nitrification, and high-effluent quality.

The Role of the Laboratory

We use a variety of analytical tests to ensure the purity of wastewater at different treatment stages, minimizing harm to people and the environment.