Presently conventional coagulants (i.e. salts of Aluminium or Iron) are used to remove turbidity in water. These pose problems of carry over finely divided flocs of aluminum hydroxide or ferric hydroxide into the clarified water and also produce bulky sludge having a high water content.
During monsoon season when turbidity suddenly increases, numerous problems are faced in treatment of water with conventional chemicals e.g. Alum and Lime.
Rishlyte range of coagulants for industrial raw water treatment consists of 'nontoxic' cationic polymers which replace inorganic coagulants (viz Alum, lime, Ferric salts) and also reduce cost of treatment. Numerous other benefits include -
a) Reduction in sludge volume and desludge frequency.
b) Reduction in Aluminium ion carryover which is a health hazard.
c) Reduced load on DM plant and negligible drop in pH of treated water.
d) Reduction in corrosion in alum addition pipeline and pump.
e) Automated dosing & controlling of turbidity and suspended solids in plants
f) Savings in labour and electricity costs
g) Reduced requirement for storage space
Rishfloc Range of flocculants consists of polymers & copolymers of Acrylamide. These are water soluble polyelectrolytes and have very high molecular weights. The range includes Anionic, Nonionic and Cationic polymers in powder, emulsion as well as in solution form.
Flocculation is the agglomeration of tiny particles into large units. It therefore, finds application in many different industries and helps in achieving clear supernatant, results in fast settling and increases capacity of clarifiers and clariflocculators apart from noticeable cost reduction.
These products also find application in dewatering applications in centrifuges, decanters, filters etc.
In open and closed cooling systems micro-organisms cause disturbances in industrial processes and damage to the material through corrosion. Slime forming and corrosive type of bacteria are the main causes of the following detrimental effects :
- Contamination of heat exchanger surfaces or blockage of pipes
- Corrosion under micro-biological deposits.
In order to inhibit or destroy the micro-biological growth, highly active but toxic and ecologically suitable biocides are often used.
Rishlyte 8094 overcomes these toxicity problems and prevents shutdown losses of equipment and results in dispersing of slime deposits and further prevents formation and growth of slime deposits in pipelines.
The flocs formed when alum or PAC are used as coagulants for raw water treatment, are weak in nature, fluffy and have high moisture content. When some of these flocs carry over along with the clarified supernatant on to the sand bed filter, the flocks break up and clog the flow channels resulting in frequent backwashes.
On use of Rishlyte for the treatment of raw water, the flocs formed are stronger and compact and add to the filter bed, thereby increasing the clarity of filtered water. These flocs do not break nor clog the filter, thus improving efficiency of filtration and increasing the filter run. Increase in filter run upto 3 to 4 times have been observed, resulting in huge savings of water, labour and electricity.