Watcr Q!!alit\1 lmprovcmct1t at1() COf1scrvatiof1l'rojcct
Watcr Q!!alit\1 lmprovcmct1t at1() COf1scrvatiof1l'rojcct
Watcr Q!!alit\1 lmprovcmct1t at1() COf1scrvatiof1l'rojcct
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Water used should be soft water and is brought from the softener ofthe scrap melting.<br />
Pool volume is 50 m3. ,\1ake UlJ Watt( as a result of evaporation is 10m:; in summer and<br />
6 m 3 .<br />
Water is replaced and the pool is cleaned every three month from sediments. Sediments is<br />
disposed on nearby soil were infiltrating occurs to. groundwater.<br />
Electricity Generation Unit<br />
The power station consists of four generation units: one 3.0 MVA, and three 3.6 MYA<br />
where MYA is Mega Volt Ampere.<br />
Water is used for cooling the engines. Sometimes, diesel leaks and cause water pollution.<br />
These leaks are the only anticipated source ofwater pollution.<br />
Scrap Melting Unit<br />
The raw material used:<br />
• Scrap<br />
• Calcium Florid<br />
.. Manganese<br />
• Silicon<br />
• Carbon<br />
Tlte manufacturing process:<br />
• The scrap is melt in an arch furnace at a temperature of 1700°C.<br />
• A sample is taken from molten iron for examination and determination ofmissing<br />
ingredient so they can be added later.<br />
• Using a crane the molten iron is moved to the casting machine.<br />
• The molten steel is cast into rectangular moulds that is cut later on to billets.<br />
Water Use in Industry<br />
The main water use is cooling to solidify the molten iron. This is done in the casting<br />
machine. The water discharged from the casting machine i~ sent to cyclones to remove<br />
suspended iron oxides and then to a sand filter. Water is then collected in a pool with a<br />
capacity of500 m 3 . This pool is fed from well water after softening. Softened water<br />
hardness is less than 15 ppm. A cooling tower is placed near the pool to cool the pool<br />
water so it can be used for cooling iron in casting machine. Thus cooling water is in a<br />
closed loop system.<br />
Some substances are added for different purposes:
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