Assessing use the chemicals for water and wastewater treatment and conservation in industries
Student name: Mr Parag Malhotra
Guide: Dr Nandini Kumar
Year of completion: 2009
Host Organisation: Ion Exchange India Limited
Supervisor (Host Organisation): Mr Manish Verma
Abstract: Water reuse after treatment is considered to be a solution to water scarcity problem. As
industries are also now taking into consideration environmental values, reduction in
water consumption minimization have became important. Due to beneficial properties of
water as heat conveyer, major industrial water consumption is for heat exchangers,
steam generation and running turbine. Water in its raw state is not suitable for direct
use and needs proper pre-treatment to enter delicate heat exchanger systems. To tackle
problems such as corrosion, scaling, depositions and biological growth in heat
exchangers, chemical treatment of water had been a most reliable choice for industries.
Modern water treatment technologies not only increase life of heat exchangers but also
let them operate efficiently at higher values of impurities. Wastewater being generated
at industries, if given proper treatment can be utilized for reuse and increasing concern
to be a zero discharge industry can be addressed. A combination of good internal
chemical treatment (in-line) and external chemical treatment (pre-treatment and
wastewater treatment) is must for most of industries economically as well
environmentally. Proper chemical treatment of water ensures minimum water wastage,
system failures, leakages, choking problem and provides best system efficiency.
Environmental concerns have also lead to exploration of application of green chemistry
in industrial water chemistry. Thus, industries not just look for most efficient and cheap
water treatment rather most efficient, cheap and environmentally sustainable water
treatment option.
Keywords: Water treatment chemicals, boilers, cooling towers, green chemistry, water
balance
