Severn Trent Services, a leading global supplier of water and wastewater solutions, will present four technical papers at the upcoming New York Water Environment Association (NYWEA) 85th Annual Meeting & Exhibition. NYWEA hosts this annual conference attended by engineers, licensed operators, consulting engineers, public officials, educators and students interested in the water environment in New York State. The papers are centered on trending industry topics: ultraviolet technology, on-site hypochlorite generation, chlorine safety and deep bed denitrification. This event will take place Feb. 4-6, 2013, in New York, N.Y. 

Ultraviolet (UV) Disinfection

Stanley Shmia, UV product manager, will present his paper titled, “Three Wastewater Facilities’ Operational Experiences with Microwave-Powered UV Disinfection.” The paper will review the design, commissioning and operation experiences of three recently commissioned wastewater treatment plants’ MicroDynamics microwave-powered UV systems. The presentation will highlight the operating and cost advantages of microwave-powered UV disinfection through real case study examples. 

On-site Hypochlorite Generation

Greg Gaffney, technical sales manager, will present his paper titled, “On-site Sodium Hypochlorite Generation: 5.75-year Case Study.” This paper provides an overview of a full-scale ClorTec on-site hypochlorite generation system design and its benefits to water utility operators. The Florida water treatment facility referenced reduced salt consumption from 3.5 to 2.8 lbs/lb of chlorine equivalent, significantly lowering their operating costs as a result.   

Chlorine Safety

“Not Just Your Father’s Chlorine Safety: A Lesson in Modern Chemical Safety Techniques,” will be presented by Gary Lohse, regional sales manager. Chlorine has been used as a disinfectant of wastewater effluent for many decades and the basic safety issues associated with the delivery and handling of chlorine gas are well established. This paper reviews these procedures but focuses on more site-specific safety measures required for sodium hypochlorite and sulfur dioxide. The paper also addresses more sophisticated methods of increasing safety utilizing monitoring, detection and scrubber technology. 

Deep Bed Filtration

Ken Wineberg, technical sales manager, will present his paper titled, “Deep Bed Denitrification Performance: Cold Weather Operations for Two Northeast Plants.” The presentation will cover an interesting find on the performance of TETRA DeepBed down flow filters under cold weather conditions. Deep bed down flow filters have proven to be as reliable as tertiary treatment to remove suspended solids and achieve lower effluent nitrogen levels. The majority of wastewater treatment plants using these filters are operating up and down the Eastern Seaboard of the United States where wastewater temperatures range from 20 degrees C in the Southeast to 8 degrees C in the Northeast during cold weather. Wastewater treatment plants in Scituate, Mass., and Warrenton, Va., are both operating in year-round denitrification mode with excellent performance during cold weather temperatures. This paper will highlight the system’s ability to achieve the effluent objectives for nitrate removal under cold weather operations. 

About Severn Trent Services
Severn Trent Services with global headquarters in Fort Washington, Pa., is a leading supplier of water and wastewater solutions. The company’s broad range of products and services is concentrated around disinfection, instrumentation and filtration technologies and contract operating services.