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A view of MFL Tertiary Treatment Plant at Kodungaiyur

MFL receives water from Panjetti Well-fields & Tamaraipakkam through the Chennai Metropolitan Water Supply & Sewerage Board (CMWSSB), which also supplies Secondary Treated Sewage Water. Water requirement is around 3.5 IMGD.

Tamil Nadu Electricity Board is the source of electrical power supply.

Capital Additions in Utilities - Water Treatment

Well before venturing in for a revamp, MFL initiated capital additions in the area of Utilities in line with the changing scenario. After experiencing acute water shortage in the earlier years, the company commissioned Tertiary Treatment Plant (630 M3/hr capacity) for treating the Secondary Treated Sewage Water supplied by CMWSSB in September 1992 and Reverse Osmosis Plant (480 M3/hr capacity) for polishing the tertiary treated water in May 1993.


Tertiary Treatment Plant

Tertiary treatment of the secondary treated domestic sewage is done in two steps at MFL sewage reuse facility. They are Biological and Chemical treatment. The biological treatment employs the conventional activated sludge process with surface aerators. The chemical treatment involves the water treatment step and finally breakpoint chlorination which kills microorganisms and removes the last traces of ammoniacal nitrogen. The tertiary treated water is pumped for further desalination to the Reverse Osmosis Plant. The TTP receives Sewage Water to the tune of about 71% of the total water requirement of plant thereby contributing to save the precious ground water.

Reverse Osmosis Plant

The tertiary treated water is given chemical pre-treatment and pressure delivered to reverse osmosis trains with permeable membrane units. RO Plant has got three streams of 160 M3/hr capacity each.

Captive Power

Two different genre of Captive Power Generators and  two numbers  of Gas Turbine Generators (2.32 MW each) with Heat Recovery Systems (HRS) and 8 nos. of Diesel Gensets(0.8 MW each) and both fuelled by high speed diesel (HSD)  were installed in the year 1983 and 1991 respectively.

Environment & Pollution Control

Effluent treatment systems, Hydrolyser Stripper for treating Ammonia/Urea effluents and Effluent Treatment Plant for liquid effluents from NPK Plants, are in place as part of environment protection / pollution control measures in tune with our environment policy.

A demister system is provided at the top of the Urea Prilling Tower to reduce the quantity of entrained urea in the air stream leaving the Evaporators and the PrillingTower.

Cooling Water Blow-down Treatment Plant was commissioned in March 2004 which is both a pollution abatement mechanism and a cost saving through water-recycling.

Current Performance

Our Ammonia & Urea Plants are performing very well. Urea Plant is being operated at over 100% load factor & Ammonia Plant load is operated to match Urea Plant requirement. For NPK Plant, ammonia is outsourced to the required level. Presently, NPK production is on a low key to financial constraints.

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