Bhubaneswar : Tata Steel BSL has established the world’s first UV Oxidation Plant
in the steel industry, at its Narendrapur plant in Dhenkanal district of Odisha for treatment of
coke oven wastewater.
The plant has a capacity to treat 80 cubic metres of waste water per hour .
The world class technology for commercialization has been jointly developed by the R & D
team of Tata Steel and Environment and Coke Oven teams of Tata Steel BSL.
Tata Steel R&D team has protected the technology through patents on the key formula and
novelty of the process.
The conventional method of treating cyanide in coke oven wastewater, one of the most toxic
and potentially deadly pollutants, is called solid sludge separation technology which may lead towards cyanide toxicity by secondary means of toxic sludge decomposition. However, the new technology will address this issue.
Tata Steel BSL Chief Operating Officer Subodh Pandey, said one of the best ways to handle cyanide is complete destruction of it by oxidation.
The UV Oxidation plant helps us achieve that and thus no footprint is left for further
contamination of the environment.
This unique initiative is one of the series of sustainable interventions the organisation is undertaking after takeover of the company. “
With sustainability at the core of its operational process, Tata Steel BSL has made many
other technological interventions ensuring no untreated water is discharged from the plant.
It has set up six Effluent Treatment Plants (ETPs) and three Gas Cleaning Plants (GCPs)
for treatment of waste water from different units like two Coke Ovens, Cold Rolling Mill, Blast Furnace, Steel Melting Shop.
Similarly, it has also established five Sewage Treatment Plants (STPs) having a total
treatment capacity of 4900 cubic metres of water per day in the plant and its housing
colony.
It has increased the quantity of water recycled from 2 million gallon per day (MGD) in
the Financial Year (FY) 2019-20 to 3 MGD in FY 2020-21.
The steel major has also commissioned Coke Dry Quenching plants with implementation
of dry quenching process instead of wet quenching of water, which saves around 65 cubic
metres of water per hour.
It has established a scientifically designed High-density polyethylene (HDPE) lined rain
water harvesting pond of capacity 50,000 cubic metres, first of its kind in Tata Steel group
for utilization of surface run-off available in the Coke Oven and raw material handling
system area.
The company has established a full-fledged environment laboratory for daily monitoring
of quality of the discharged water which is well below the stipulated limit of the statutory
authorities to ensure the water quality always remains as per parameters set by the
regulatory bodies
Tata Steel BSL plant in Dhenkanal has been honoured with CII National Award for
Excellence in Water Management 2020 as a noteworthy water efficient unit.
UNI
