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Design and Specifications Complete installation drawings and operating instructions shall be provided for all equipment +. furnished. OPERATING CONDITIONS ODORS. The treatment plant shall produce no objectionable odors. PLANT STARTUP. During the plant startup phase, the influent will enter the buffer-tank pumpwell for transfer directly to the aeration chamber. Generally, a 10-day period at near-maximum design flows is sufficient to achieve system stabilization. A longer period may be required under reduced flow conditions. PLANT BIOLOGIC LOADING. The calculated per capita biologic loading for this project follows EPA guidelines and is 9.5 lbs of BOD. The plant is capable of a maximum biologic loading of 10.8 lbs of BOD. TERTIARY DISCHARGE. This plant shall be capable of removing, as a minimum, 90% of the biochemical oxygen demand (BOD) and suspended solids (SS) from 5,000 gpd of raw domestic 4- sanitary sewage or waste with a maximum organic loading of 10.8 pounds of BOD per 24-hour day. The tertiary filter is an Everfilt Model SMH24-2A in dual configuration. The filters are so de- signed that they use the filtrate of one filter to backwash the other, automatically reversing this cycle to backwash the first filter. The filters are capable of reducing suspended solids peak ,+ loadings of 50 mg/L or less and average loadings of 30 mg/1, or less to 10 mg/L or less. " SLUDGE GENERATION AND WASTING �- The batch reactor shall achieve long periods of efficient operation without wasting sludge due to the holding/digestion aeration batch concept. Influent shall be reseeded by 100% of RAS 14.7 times in every 24-hour period. Mixed liquor shall be held without runoff, thus allowing digestion without dilution with a stabilized background. As long as bulking does not occur within the settling cycle (common to old sludge), and the SSV-60 test maintains less than 500 ml, wasting shall not be required. Sludge wasting, when SSV-60 tests indicate the need, shall be performed from the clarifier. The amount of sludge generated within the aeration chamber (MISS) is controlled by the operator's +r proper use of the clarifier. Plant design is based on concentrated wastes received, which average between 90 and 300 mg/L. Poor collection system integrity, while hydraulically loading the plant to maximum flows, will generate less sludge over the same retention time and produce lesser volatility (MLVSS) in the mixed liquor/suspended solids (MLSS). The F:M ratio is important in determining plant fine-tuning procedures to maintain good effluent quality. Sludge age is also an important factor, especially if sludge concentrations are minimal. 9