Citation:

Garg, A., V. Namboodiri, B. Smith, A. Al-Anazi, B. Murugesan, AND T. Bowman. Disinfection of Wastewater with Peracetic Acid (PAA) and UV Combined Treatment: A Pilot Study. Proceedings of the Water Environment Federation. Water Environment Federation, Alexandria, VA, 2018(6):76-89, (2018). https://doi.org/10.2175/193864718824828344

Impact/Purpose:

Municipal waste water treatment is aimed at protecting the environment through improved effluent treatment practices, eliminating toxic treatment byproducts, and reducing treatment cost. Metropolitan Sewer District of Greater Cincinnati (MSD) and NRMRL has been investigating the use of peracetic acid (PAA) alone and in combination with UV to increase the disinfection efficiency, energy conservation and reduce the cost of disinfection treatment. The results from this field pilot study brings out a valuable information that just by combining PAA(1ppm) and UV we will be able to cut the UV energy into half or PAA alone can achieve the treatment goal. This municipal field study reveals that energy conservation, treatment cost reduction and low DBPs are possible by using PAA alone or in combination with UV.

Description:

UV irradiation is one of the most commonly used wastewater disinfection methods. Significant advantages of using the UV-based disinfection are that it leaves no residual and does not form any disinfection by products (DBPs) in the treated wastewater. However, the high-energy cost is the major downside of the UV-based disinfection. For the past three years, Metropolitan Sewer District of Greater Cincinnati (MSD) and EPA has been investigating the use of peracetic acid (PAA) alone and in combination with UV to increase the disinfection efficiency and reduce the cost of disinfection treatment.

URLs/Downloads:

Record Details: