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_Ti 5 <br /> tYTtRNA7"lUIYAL <br /> Because the on-site disinfectant generation system operates at a set amperage point, the <br /> solution is generated at a consistent concentration. Shelf life is not an issue since the systems <br /> are designed to utilize all disinfectant generated during a 24-hour period. The mixed-oxidant <br /> models are fully enclosed in stainless steel cabinets, protecting both the operator and the <br /> equipment. Modularity means that the system can be easily expanded upon by adding more <br /> cabinets, with each cell having its own dedicated brine pump, power supply, and controller. The <br /> systems support external communications for remote display, data logging, remote control, or <br /> interface with a SCADA system. <br /> The on-site generated chlorine is injected to the treated effluent pipeline of OF membranes. <br /> There is a high energy inline mixer right after the chlorine application point to make sure <br /> effective initial mixing of chlorine and water occurs. <br /> The disinfected water can be used for irrigation, landscaping, and any other Disinfected Tertiary <br /> Recycling Water application. <br /> 3.6 SLUDGE DISPOSAL <br /> The tankage of the aerobic sludge digester is 2,674 gallons. The aeration period is 16 days and <br /> the sludge retention time is 30 days. The stabilized sludge is trucked to the local sludge disposal <br /> site on a regular basis. <br /> DETERMINATION OF AEROBIC SLUDGE DIGESTER VOLUME <br /> The aerobic sludge digester is sized based upon (WEF,1998) <br /> VQi(Xi +YS;) <br /> = <br /> X(kdpv +1/SRT) <br /> Where V = volume of aerobic digester, ft, <br /> Q; = influent average flowrate to digester, ft3/d <br /> X, = influent SS, mg/L <br /> Y = fraction of the influent BODS consisting of raw primary solids <br /> S, = influent BODS <br /> kd = reaction rate constant, 1/d <br /> Pv = volatile fraction of digester SS <br /> SRT = solids retention time, d <br /> 4 CONTROL AND INSTRUMENTATIONS <br /> The control system for the WCMCRWWTP consists of a Programmable Logic System (PLC) that <br /> monitors the processes and instrumentation of the plant. In the event of a total PLC failure, it is <br /> designed to be able to be run manually if needed. An optional UPS can be installed to maintain <br /> the system's status during extended power outages. <br /> Wine Cup Motor Coach Resort WWTP Page 9 of 10 8/22/2007 <br /> Preliminary Design Report <br />