Raw Water Treatment Plants

UEM has installed several Raw Water Treatment Plants including one of the largest - a 10,800 M3/hr. capacity (260 MLD) treatment plant for seawater at Jamnagar Refinery of Reliance Petroleum in India. Bechtel (U.K.) were the overall project consultants for this project which was awarded to UEM against very stiff global competition. This treatment system is automated, with PLC based controls. The process units include Flash Mixers, Flocculators, Lamella Clarifiers / Sludge Thickeners, and Duel Media Automatic Backwashing Gravity Filters. This treatment scheme reduces suspended solids levels of up to 250 mg/l in raw seawater to less than 5 mg/l in the treated water. The treated water is used it as a feed to the desalination plant and the fire water system.

Recycle/Reuse Systems

UEM has provided Recycle / Reuse solutions to many of its reputed clients. These include a MBR System (Membrane Bio-Reactor) followed by UF/RO for a Minute Maid project in Florida and a SBR system followed by UF/RO for Elementis Specialties Inc., West Virginia, USA. Generally, the wastewater is first treated in biological treatment systems and then passed through the UF/RO stages to make it suitable for recycle / reuse applications. These systems have a very large potential market considering the scarcity of fresh water and problems associated with disposal of untreated water.

Common Effluent Treatment Plants for Industrial Areas/Zones

UEM has installed several CETPs for industrial areas in Delhi for the DSIDC, including the Mangolpuri Industrial Area (2.4 MLD), the Badli Industrial Area (12 MLD), the Narela Industrial Area (22.5 MLD), and the Mayapuri Industrial Area (12 MLD) among others. These plants incorporate physio-chemical treatment, biological treatment, tertiary treatment with duel media filters and activated carbon filters, sludge thickening and mechanical sludge dewatering steps. Some of these plants incorporate only physio-chemical treatment and tertiary treatment steps with sludge dewatering. All these plants have been working very well since commissioning.

Common Effluent Treatment Plants for 136 Tanneries

One of the prestigious installations for UEM is a CETP for 136 Tanneries effluent at Pallavaram in Tamil Nadu (India) which was conceptualized by UNIDO and coordinated by the Tamil Nadu Pollution Control Authority. This CETP is designed for a 3,000 M3/day capacity with wastewater characteristics of 1,600 mg/l BOD, 3,000 mg/l COD and 2,000 mg/l TSS. The CETP is designed to achieve a final BOD of less than 30 mg/l. The treatment system includes a pumping station (300 M3/hr), coarse and fine screens, grit removal, equalization with ejector type aerators, clariflocculation, high efficiency diffused aeration / clarification, sludge thickening / drying, mechanical dewatering & PLC based operation.