Introduction
Challenge
Solution Offered
An in depth study of the incoming water prompts Sparkle to suggest a membrane based clarification system, which not only brings down the water to safe disposal limits but also makes it good enough to be used in the boilers. Modification in the operating parameters suggested for achieving better quality at the outlet. This ETP outlet water is further sent for post treatment as given below.
An extensive system for water treatment is suggested with the following flow scheme, Bag Filter – Activated Carbon Filter – Pressure Sand Filter – Ultra Filtration – Reverse Osmosis. A gradual reduction in the suspended impurity load is effected in each successive stage. The Ultra Filtration system brings down the turbidity and fine suspension levels drastically so as to make the water quality appropriate for feeding to Reverse Osmosis. The Reverse Osmosis system effectively brings down the Total Dissolved Solid levels in the final permeate less than 80 parts per million which is good enough for boiler water intake.
Result Achieved
The treated water is
- Flow – 5 cum per hr
- Turbidity < 1 Nephlometric Turbidity Units
- Total Suspended Solids < 1 ppm
- Total Dissolved Solids < 80 ppm
Benefits to client
- Treated water well within the safe limits as prescribed in the surface water discharge standards
- Higher flux because of better membrane selection and thus lower capital costs
- Superior pre treatment and better membrane quality leading to lower operating cost of the UF –RO system
- Fully automatic UF system with zero manual intervention
- Pollution Control Board and Government clearances
- High quality water being reused in boilers thereby reducing the fresh water intake volumes and the associated costs
- Consistent water quality with high degree of purity
- Small footprint