SPIC urea biohydrolysis (UBH) process.

The effluents containing urea are generally treated by conventional thermal hydrolysis involving nitrification and denitrification. These process are energy consuming and have drawbacks. UBH process evolved by SPIC is simple and economically viable. It involves the use of ureolytic and non-ureolytic bacterial species, which can tolerate upto 28,000 ppm of urea or 30,000 ppm of ammoniacal nitrogen.

This process was commissioned during 1987 at SPIC fertilizer complex at Tuticorin. It can treat 20m3 of effluent containing 10,000ppm urea nitrogen. The plant is running satisfactorily and has set new standards for effluent treatment. It has earned international reputation and won several awards