Client
Automobile Industry
Location
Andhra Pradesh
Capacity
STP 900 m³/day · ETP 2,050 m³/day
THE CHALLENGE
Treat varied wastewater streams while maximising recovery
The plant needed to treat sewage and multiple industrial wastewater streams with varying characteristics while achieving high recovery, reducing freshwater dependence and meeting CPCB, APPCB and ZLD requirements.
ENGINEERING APPROACH
Engineering approach
Separate STP and ETP systems integrate physico-chemical and biological treatment, UF, three-stage RO and MEE, supported by PLC/SCADA-based monitoring.
INTEGRATED SOLUTION
Treatment designed for recycle and reuse
STP
- 01
Primary treatment
- Bar screen
- Oil & grease trap
- 02
Biological treatment
- INDION MBR
ETP + Recycle + ZLD
- 01
Primary treatment
- Collection tank
- Reaction tanks
- DAF
- 02
Biological treatment
- Aeration pond
- Secondary reaction / DAF
- 03
Tertiary treatment
- UF
- RO-1 / RO-2 / RO-3
- 04
ZLD
- Multi-effect evaporator
- ATFD
Project success metrics · STP
Treatment, recycling and reuse
- 01
Water reuse
Treated water reuse for horticulture.
- 02
Freshwater reduction
No freshwater required for horticulture.
- 03
Circularity
Sewage wastewater converted into a reliable, reusable resource.
Project success metrics · ETP
Recovery and reuse at every stage
- 01
ZLD compliance
Zero liquid discharge achieved; CPCB/APPCB norms met.
- 02
Process reuse
Treated water reused for process requirements.
- 03
Freshwater reduction
Approximately 92% overall recovery lowers external freshwater demand.
- 04
Reject management
RO reject concentrated through MEE to meet ZLD compliance.
- 05
Circularity
Wastewater converted into a reliable, reusable resource.