IndianOil currently controls ten of India’s twenty refineries. The group refining capacity is 60.2 MMTPA or 1.2 million barrels per day gives it the largest share among refining companies in India. It accounts for 33.8% share of national refining capacity. Its Panipat refinery is located in the historic district of Panipat in the state of Haryana.

In 1996, in order to contribute towards a cleaner environment, Indian Oil commissioned a 600 m3/hr (14.4 MLD) Wastewater treatment plant for its Panipat refinery. The entire EPC contract was awarded to HDO on a turnkey basis.

The plant comprised of:

• Tilted Plate Interceptor (TPI)
• Dissolved Air Floatation (DAF)
• Bio-Tower
• Aeration
• Clarifier
• Filtration
• Pressure Sand Filter
• Dual Media filter
• Gravity Thickener
• Centrifuge

The plant was successfully commissioned in June 1996 and is in satisfactory operation since then.

Accomplishments:

• HDO’s first turnkey refinery ETP project
• HDO installed Archimedean screw pumps for the first time