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Table 5 - Potential Water Savings
JISICO
MELTSHOP
Watcr Conscnation Tcchnique Currcnt Projccted Projected Percent
Watcr Water Watcr Decrcase in
Consumption Consumption Savings Total Water
(m J /d) (mJ/d) (mJ/d) Consumption
1. Radiator closed-loop cooling system for all 60 8 52 20
generators
2. Treat and reuse all blowdowns: oxygen 30 3 27 10
plant, power station, and meltshop
3. Sand filter backwa.c;h reuse 28 8 20 8
4. Softener regeneration wastewater reuse 20 2 18 7
5. Cooling water segregation for continuous 20 2 18 7
casting \\ith reuse of rolling m;n cooling
water or treated blowdown
6. Eliminate water cooling in the oxygen plant 10 0 10 4
7. Water conservation ion-exchange resin 20 10 10 4
I\ystem
8. Closed-loop cooling system for power 1-2 1 1 negligible
station .
Total Savings 150 5 - 26 37· 100 25-66
ROLLING MI ~L
'Vatcr Conscn'ation Tcchniquc Current Projected Projected Percent
-
W:ltcr 'Vater Watcr Dccreasc'in
Consumption Consumption Savings Total \Vater
(m 3 /d) (m 3 /d) (mJjd) Consumption
1. Eliminate discharges from wastcwatcr 1'4 7 77 30.0
treatment system
2. Install water conservation devices to deliver 100 1'5 15 6.0
cooling water to roll stands
3.a. Eliminate once-through cooling of 10 0 10 4.0
flying shears
3.b. Recycle cooling water of flying shears 10 1 9 35
4. Reuse reheating furnace cooling water 2.5 0 25 1.0
blowdo\\ll
5. Install water conservation dC\;ces for 10 8.5 1.5 0.6
sanitary water
Total S;l\'ings 110 17 - 94 27 - 90 25 - 82
lilt Ii_ iii.