Evoqua installs ETS-UV systems to treat storm water overflows in Rushville, Indiana

Evoqua has installed and commissioned two ETS-UV systems to support a “Living Greener” initiative of Rushville, Indiana.

The supply of two ETS-UV SW-1250-20 ultraviolet (UV) disinfection systems will complete the Rushville’s Combined Sewer Overflow (CSO) Long Term Control Plan.

This equipment will treat the plant’s wastewater and respond to CSO, which occur when flows grow beyond the hydraulic capacity of the combined stormwater and wastewater to the treatment plant.

Rushville’s plan intends to safeguard the Flatrock River by making a safe release of excess water through filtration and disinfection methods.

CSO water is traditionally disinfected through chlorination method; however, the byproducts of chlorination are not environmentally friendly. On the other hand, UV disinfection is efficient, low cost and an environmentally friendly and chemical-free method and does not leave any residual while disinfecting water.

Further, UV disinfection method can inactivate pathogens such as Giardia and Cryptosporidium. Discharged wastewater containing these pathogens can be hazardous for drinking water supplies and recreational water.

ETS-UV systems were chosen due to compact design, least number of components and unique product features. These systems are designed in a small footprint with an access hatch to remove flow disruptions and air pockets.

Evoqua aquatics and disinfection research, development and engineering vice president Jon McClean said: “Applying UV disinfection technology is an environmentally friendly option for cities to meet the challenges associated with combined sewer overflow. The process protects wetlands, aquatic species and supports a healthy ecological habitat."