Effluent Treatment Plant

Approx. Rs 1,80,000 / PieceGet Latest Price

Product Details:

Car-wash wastewater contains:

• Oil & grease

• Suspended solids (sand, dirt)

• Detergents & surfactants

• Chemical additives / wax

• Heavy metals (minor)

An efficient ETP removes these contaminants and allows safe discharge or water reuse (up to 80–90% recovery).

⭐ Typical Treatment Process Flow1. Collection & Screening

• The wastewater from washing bays flows into a collection pit.

• Screening removes large debris (plastic, leaves).

2. Grit Chamber / Sand Trap

• Removes coarse particles like sand, silt, gravel.

• Prevents clogging of downstream equipment.

3. Oil–Water Separator (O/W Separator)

• Removes free-floating oils and grease.

• Options:

  • API separator

  • Coalescing plate separator

  • Skimmer-based separator

4. Equalization Tank (EQ Tank)

• Balances flow and wastewater concentration.

• Provides stable feed to the treatment system.

• Equipped with:

  • Air diffusers for mixing

  • Level sensors

5. Chemical Treatment (Coagulation–Flocculation)

• Removes emulsified oil and fine colloids.

• Common chemicals:

  • Alum or PAC (coagulant)

  • Polymer (flocculant)

  • pH adjustment chemicals

6. Clarifier / Settling Tank

• Flocs settle to the bottom.

• Clear water overflows to next stage.

• Sludge collected and sent to sludge drying bed.

7. Filtration

Multi-stage filtration may include:

• Sand filter (pressure filter) – removes suspended solids

• Activated carbon filter – removes surfactants, detergents, odor

• Micron / Bag filter (optional) – for finer polishing

8. Disinfection (Optional)

• UV or chlorination if water is reused.

9. Treated Water Storage

• For reuse in:

  • High-pressure washing

  • Floor cleaning

  • Gardening

Treated water quality typically meets discharge norms for car wash facilities.

10. Sludge Handling

• Sludge drying beds

• Dewatering filter press (for larger plants)

Typical Design Capacities

Car-wash ETPs are usually sized as:

 

Approx. Rs 1,80,000 / PieceGet Latest Price

Product Details:

A Car Washing Effluent Treatment Plant (ETP) is a system designed to treat wastewater generated from car washing operations—removing oil, grease, detergents, suspended solids, and other contaminants so the water can be safely discharged or reused.

Car Washing ETP:  Why it’s needed

Car wash wastewater contains:

• Oil & grease

• Detergents and surfactants

• Mud, sand, suspended solids

• Heavy metals (from brake dust, engine residue)

• High Chemical Oxygen Demand (COD) and Biological Oxygen Demand (BOD)

Discharging this untreated is prohibited in most regions due to environmental laws.

Basic Process Flow of a Car Wash ETP1. Screening & Grit Removal

• Removes large solids, plastic pieces, leaves, sand.

• Equipment: Bar screen, grit chamber.

2. Oil & Grease Separation

• Uses gravity separation to remove floating oil.

• Equipment: Oil–water separator (API/parallel plate interceptor).

3. Equalization Tank

• Balances flow and stabilizes wastewater quality.

• Often includes coarse air diffusers for mixing.

4. Coagulation–Flocculation

• Chemicals like alum, PAC, or ferric chloride added to bind fine particles.

• Floc becomes heavy and settles out.

5. Primary Settling / Lamella Clarifier

• Suspended solids settle at the bottom.

• Cleaner water moves forward.

6. Filtration

Types:

• Sand filter (removes turbidity)

• Activated carbon filter (removes odors, dissolved organics, detergent residues)

7. Disinfection

Chlorine, UV, or ozone to kill microbes.

8. Optional: RO or UF for Water Recycling

If the car wash wants to reuse water:

 

• Ultrafiltration (UF) removes fine particles & microbes

• Reverse osmosis (RO) removes TDS for high-purity water

Approx. Rs 5,25,000 / PieceGet Latest Price

Product Details:

DAF removes suspended contaminants by floating them to the surface using microbubbles. Air is dissolved in water under pressure and then released at atmospheric pressure, forming fine bubbles (20–80 microns). These bubbles attach to particles, making them buoyant.

Why DAF Is Used in Textile Wastewater

Textile wastewater often contains:

• Dyes (reactive, disperse, direct dyes)

• Suspended solids (fibers, lint)

• Surfactants and detergents

• Oils and greases

• Finishing chemicals (softeners, sizing agents)

• COD/BOD from dyeing and finishing

DAF is ideal because it can quickly remove insoluble or poorly settling contaminants that sedimentation cannot.

Typical DAF Process Flow for Textile Effluent

1. Screening
   Removes large solids, lint, threads.

2. Equalization tank
   Balances pH, temperature, and flow.

3. Chemical dosing (critical step)

   • Coagulant (Alum, PAC, FeCl₃)

   • Coagulant aid / flocculant (polymer)

   • Adjust pH (often 6–8 depending on dye chemistry)

4. DAF unit

   • Pressurized recycle stream (4–6 bar)

   • Dissolving air → saturation → rapid decompression

   • Bubble–particle attachment

   • Float layer is removed by skimmer

5. Sludge handling
   Thickening or dewatering (belt press/filter press).

6. Post-treatment (optional)

   • Biological treatment (MBR, SBR, ASP)

   • Advanced oxidation (ozone, Fenton) for color removal

   • Sand/activated carbon filters

🔷 Expected Removal Efficiencies

Typical performance from a well-optimized DAF:

 

Color and COD removal depend strongly on coagulation–flocculation chemistry.