The City of Taylorsville sewer department owns and operates a POTW (wastewater and collection system) that serves approximately 575 customers located within the city boundaries. The wastewater collection and treatment system provides sewer service to four subdivisions, an industrial park and the residential/business district of the downtown area via a network of sewer collection lines. Due to the rapid population growth in the past 15 years and the request for additional sewer service, improvements to the Wastewater Treatment Facility and collection system were required to continue providing the necessary service for the community. In January 2011 additional employees were hired and the necessary equipment was purchased to perform in-house repairs and corrections to reduce inflow and infiltration to the collection system. In January 2012 the City started operating the newly upgraded WWTP with a capacity of 0.750 MGD. The City’s sewer system is a vital part of our health and a safe environment. What we take from our natural resources, we return cleaner for the next generation.
The WWTP is located at 101 Lee Stevens Road, Taylorsville, KY. It has a permitted discharge of 750,000 gallons per day at Outfall #001 located at Mile Point 54.8 on the Salt River (receiving stream) downstream of Taylorsville Lake.
Wastewater Treatment Plant Expansion:
The expansion established the ability to treat an average of 750,000 gallons of wastewater per day by implementing the use of a treatment system know as the “Lemna System”. This treatment process utilizes an improved treatment technique which operates in conjunction with a large covered lagoon, mixers, blowers and a network of lines to supply forced air systematically to provide adequate and uniform aeration. The covered lagoon increases the water temperature to allow for a more efficient treatment in less time. The Lemna System utilizes less space to treat more volume, achieving a higher quality of effluent to the receiving stream. It makes use of one of three lagoons which is divided by the use of baffles to separate the treatment process. Each process of treatment has its own unique characteristic to achieve sufficient BOD and Suspended Solids removal. Additional treatment includes ammonia removal by utilizing forced aeration, elimination of bacteria with the use of ultra-violet and post aeration to increase the dissolved oxygen content before entering the receiving stream.
The expansion also included the replacement of the sewer pump station located at 520 Taylorsville Road that was undersized, outdated, and having constant repair. The existing pumps were too small to handle the added volume of wastewater from the new subdivisions. Replacement of the pump station will allow future growth of the City of Taylorsville.
Wastewater Collection System Improvements:
Along with the Wastewater Treatment expansion, improvement to the wastewater collections was implelmented. The collection system was in need of repair; two additional employees were hired, and equipment was purchased to perform a Sanitary Sewer Evaluation Survey (SSES). The evaluation included smoke and dye testing, flow monitoring to determine the location of I & I, close-circuit imaging of the sewer lines in addition to other observations. The SSES is an ongoing commitment and a vital portion of our operation. Through the SSES the City sewer task force was able to reduce I & I more than 50%. Other equipment has been purchased to enhance a maintenance program. A viable maintenance program is essential to lengthen the life of the collection system and is cost effective. (Note: it cost an average 1.5 to 2 times more to collect and treat wastewater than to treat and distribute potable water. In some cases it may be 5 times more depending on the pollutants in the wastewater.)
What is I & I? I & I is short for Inflow & Infiltration. It is when unpolluted surface or ground water such as rain water enters through cracks or openings in the sewer system. The elimination of line and manholes fractures and apertures such as broken clean-out caps, gutters connection, roof and floor drain connections, and storm drain connections has reduced I & I tremendously.
The collection system maybe considered similar to the veins in the body. Blood veins return used or polluted blood back to be cleaned, revitalized, then used again. The same holds true with a collection system. It collects and returns used or polluted water back to be cleaned and revitalized to be used again. On the other hand like veins can become clogged and cause problems, this holds true with a collection system. A collection system is designed to convey wastewater, but it is not design to dispose of paper towels, disposable diapers of any sort, feminine products, impenetrable material, flammable liquids, liquids with a high or low ph, chemicals, cooking grease and the list goes on.
The collection system consists of gravity collection lines mainly 8″ PVC and re-lined clay pipe, manholes, sewer pump/lift stations and force mains. The sewer manholes are comprised of brick built from the ground-up or precast concrete manholes. Of the seven pump/lift stations, 4 stations piggyback from one to another and the remaining three pump directly to the Wastewater Treatment Plant (WWTP) via force mains. The force mains consist of steel, ductile iron and PVC piping ranging from 2″ to 12″ conveying sewer directly and indirectly to the WWTP. Other information can be obtained by calling 502-477-3235.
See the link below for City Ordinance #368 which has the newest sewer rates, connection charges, and requirement. Section #2 deals with the new monthly sewer rates for all customers. Section #4 deals with Sewer Connection charges.