CVS MACHINERY / TOSYALI HOLDING
Sector: Iron and steel industry
Location: Algeria
Raw water source:Municipal water
Capacity:1. Plant: 2400 m3/day
2. Plant: 4080 m3/day
Water for cooling in the 1st and 2nd steel mills which belong to Tosyali Holding and established in Algeria by CVS Machinery who is active in steel and iron industry, is obtained from well water which is treated for open and closed circulation systems.
Cooling water used for cooling machinery is carried by open and closed loops which are fed by makeup water treated in the 1st mill; in the process designed for this mill water after disinfection by chlorination is fed into the reverse osmosis system with 108 membranes and 100 m3/hour capacity to supply water for mould loop. Product water is fed into the mould loop after pH adjustment. In the process which is designed for the 2nd mill, reverse osmosis system is installed as two parallel lines with 90 membranes and 170 m3/hour total capacity fed with 227m3 water hourly. Cartridge filters just before reverse osmosis systems provide 5 micron sensitive filtration.
On the same chassis, there are 2 high pressure service pumps made from 316 stainless steel and with 56.6 m3/hour capacity each, are 50% backuped and provide reverse osmosis system with pressurized water. Reverse osmosis is designed to clean and rinse automatically without performance drop thanks to its automatic cleaning and rinsing units. RO product water is stored after pH adjustment to provide open and closed loops.
In the project, tower blow down is also taken into account. Cooling tower loops are controlled by biocide dosing, corrosion inhibitor dosing and solid-liquid emulsion breaking units. As a result, besides chemical control of cooling tower blow downs, water losses from evaporating is also compensated and cooling water treatment is realized by reverse osmosis method.
