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Modified rinsing system reduces load on RSP effluent treatment plant

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OST Business Bureau
Rourkela, Nov 4:
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A modified rinsing system installed at the Anneal and Pickle line at the Silicon Steel Mill of Rourkela Steel Plant (RSP) last month has improved strip surface quality and acid recovery and has reduced load on effluent treatment plant.

Continuous flow of acidic rinsed water had put extra load on the acid treatment plant.

During summer and rainy seasons, the supply rinse water from the plant reservoir used to contain lots of mud and dust that resulted in brown stain marks on the strip, thereby affecting its surface quality.

The modified closed-loop hot and cold rinsing system is equipped with pumping unit consisting of 6 acid rinsing pump-sets.

Each rinsing tank is being catered to by an individual pump and the rinse water of the tank is continuously re-circulated in the same tank through close loop system to prevent overflow of rinse water from one tank to another and thereby averts mixing of acidic water.
The plant authorities have installed a self cleaning filter to improve input water quality of the rinse tanks.