Severn Trent Services to Present Four Papers at NYWEA 2013 Annual Conference

Jan. 28, 2013
Technical papers will feature ultraviolet disinfection, on-site sodium hypochlorite generation, chlorine safety & deep bed denitrification

Severn Trent Services will present four technical papers at the New York Water Environment Assn. (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 to 6, 2013 in New York, N.Y.

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.

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 lb per lb of chlorine equivalent, significantly lowering their operating costs as a result.

“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.

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 a 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 (WWTP) using these filters are operating up and down the Eastern Seaboard of the United States where wastewater temperatures range from 20°C in the Southeast to 8°C in the Northeast during cold weather. Scituate, Mass., and Warrenton, Va., WWTPs 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.

Source: Severn Trent Services

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