Complex Effluent Treatment & Recycling
WABAG has set up a plant to treat a cocktail of PTA process effluent streams generated from expansion of the PTA and PET plants in Dahej, Gujarat. It is the largest recycling plant for PTA Effluent in India. A tailor-made, advanced process design was employed, combining the activated sludge process (MBR) and anaerobic treatment (UASB) in a single unit.
The recycling plant comprises ultrafiltration and reverse osmosis technologies; purified water is reused as utility water (80% recovery rate). The biogas generated during anaerobic treatment (34,000 m3/d) is used as flue gas for plant utility purposes providing about 40% savings in heating costs.
Package
- Module 1 – Converting effluent streams like process effluents from Polyester Staple Fibre plant, oily water stream, sanitary wastewater and treated effluent from existing effluent treatment plant & cooling tower blow down to reuse quality with 80% recovery.
- Module 2&3 – Process effluents from Poly Terephthalate Acid (PTA) and Poly Ethylene Terephthalate (PET) production & demineralisation water effluent treated to reuse quality with Up-flow Anaerobic Sludge Blanket Reactor (UASB), Membrane Bio Reactor (MBR), Ultra Filtration and Reverse Osmosis.
Refurbishment and Upgrade
Update of an existing plant to state-of-the-art ETP (30,000 m3/d) implementing a comprehensive technological optimisation and upgrading programme. The modernisation process commenced in 2010 and was realised in two phases during continuous plant operation. In addition, a self-washing filtration system was installed for enhanced water reuse.
Package
- Slop Oil Recovery – API
- Dissolved Air Flotation – DAF
- Activated Sludge Process
- Slop and Sludge Tri-canters
- VOC Odour Treatment
Compact Effluent Treatment Solutions
To meet more stringent environmental standards a containerized solution comprising multi treatment steps was designed and built. Commissioning was completed on site.
Package
- Oil separators (CPI)
- DAF (Dissolved Air Flotation)
- Low footprint Lamella separators
- Activated sludge treatment
High Salinity Raw Water Treatment
The project acted as a solution to the issues faced by the client due to salinity in the intake water from Narmada river. The project was completed in a record breaking time of 8 ¾ months including engineering, supply, construction, testing and commissioning.
Package
- Basket Strainer
- Ultrafiltration
- Reverse Osmosis
- Reject Reverse Osmosis, achieving high recovery rate of 80 – 85%
Madinat Salman WWTP
Building a state of the art WWTP for a new township located on reclaimed land in Bahrain. Purified water will be reused to cater for the entire irrigation water requirements for all 13 islands.
Project Highlights
- Highly challenging civil component on reclaimed area
- Mechanical pre-treatment
- Biological treatment
- Wastewater filtration
- Sludge treatment
- EPC Contract with 5 Years O&M
Beni Messous WWTP
Two wastewater treatment lines followed by a common tertiary treatment plant (5,500 m3/h) for water reuse for irrigation purposes.
Project Highlights
- Mechanical pre-treatment
- Biological treatment
- Wastewater filtration
- Final disinfection odour treatment
- Sludge treatment: aerobic digestion, dewatering
Madinaty WWTP
Water reclamation plant for a new and exclusive satellite city near Cairo. Purified water is directly pumped into a special service water network for irrigation purposes. DBO-contract incl. 12 months O&M.
Project Highlights
- Mechanical pre-treatment
- Biological treatment
- Wastewater filtration
- Final disinfection
- Sludge treatment: aerobic digestion, dewatering
The new Goreangab WTP
Turning municipal wastewater into drinking water. World’s first advanced water treatment plant for direct potable water reuse.
Project Highlights
- Pre-ozonation
- Coagulation & flocculation
- Dissolved air flotation (DAF)
- Dual media filtration
- Main ozonation
- Biologically activated carbon filter
- Adsorption/ activated activated carbon filter (GAC)
- Ultrafiltration
City Wastewater Management
24 x 7 management of the wastewater of 16 million inhabitants – on 2 continents.
Project Highlights
- Integrated Management Model- Maintaining over 120 units
- 9 pre-treatment plants: 4,200,000 m3/d
- 52 biological wastewater treatment plants: 980,000 m3/d
- 64 pumping stations: 2,300,000 m3/d
- 3 main WWTPs clean the bulk of the city’s wastewater volume based on energy-optimized designs.
Integrated Water Management
Sustaining the water supply of Chennai through efficient operational management of drinking water and wastewater treatment plants for over a decade.
Project Highlights
- Ensuring water security & enhanced sanitation coverage for Chennai
- 2 Drinking Water Treatment plants: Red Hills and Veranam (480, 000 m3/d)
- 2 Power neutral STPs (Kodungaiyur & Perungudi) and 1 WWTP (Alandur): 188,000 m3/d
- 1 SWRO Plant (Nemmeli): 110,000 m3/d