Integrated System to increase solar salt yield by enhancing evaporation rate of brine using Innovative methods

The salt production in India faces challenges such as reduced sunny days, unseasonal rains, brine dilution, and damage to harvested salt. Due to the drastic climate change in last four years salt production reduced up to 30 %. Land under salt production is limited to ~ 5lac acres in India. Salt production in additional land will lead to salinity ingress. The developed system address the above mentioned challenges by increasing the salt yield from 60 to 85 tons per acres land area by applying a heat exchanger assisted by solar energy devices.

Annual salt demand in India is rising by 5-6%, driven largely by rise in industrial consumption, particularly for caustic soda and soda ash and exports. The salt demand is increasing and feasible coastal land is limited for salt production, which leads to the consistent increase in demand of salt and rise the salt price. The present system is to increase the salt yield by enhancing evaporation rate of brine in existing salt pond area. The salt production quality can be increased by reducing salt cycle duration by 30-40 % compared to natural solar evaporation. 

• Simple processing steps
• Minimized energy consumption
• Continuous process
• Yield and quality can be increased
• Environmentally friendly
• Short payback period of 3.5 years