PROJ00156 - Laserfiche WebLink

Home Browse Search

I I I I I I I I I I I I I I I I I I I Backwash water and clarifier sludge are drained to a reclamation pond on the plant site. Operators report that: Sludge was removed from this site in 1988 by Town staff. A small amount of supernatant water is pumped to the clarifier for reuse. The clarifier is purged of sludge using a drain valve once per shift on high- production days. In light of the above information, sludge production and handling was not addressed in this preliminary evaluation. It should be pointed out, however, that due to the increased emphasis on Giardia cyst removal in modern water treatment facilities, the reuse of backwash water which may contain concentrated amounts of cysts should be carefully considered. (Note: The Town has a discharge permit in effect for the WTP) Plant Operations and Staffinll Condition of equipment, piping, controls, and instrumentation was observed during the field visit. Knowledge of the operator with regard to experience, understanding of the plant's capabilities, and level of effort was also observed on the plant tour and in subsequent discussions . In summary, the following was noted: 1. Instrumentation, such as storage tank level indicator and certain flow meters, were inoperative. Chemical feed equipment, chemical dosage instrumentation, and chemical storage space needed improvement. Some water sampling points need to be added and/or relocated. In general, chemical addition process control could be improved. 2. The operator reported that they try to keep key system components and problem equipment in stock and that they note in a separate log form when preventative maintenance is done. Corrosion of piping and valves in the pipe room near the clearwell was noted. Corrosion control of existing piping and valves could be done by using a repainting program. In general, maintenance needs improvement to preserve facilities already in place. There seems to be no plan to operate the WTP during equipment failure, or during interruptions in electric power. 3. Personnel are well aware of most deficiencies. All personnel interviewed are cross- trained and have responsibilities for operation and maintenance of the water distribution system, the sewer collection system, and the wastewater treatment plant, as well as the water treatment plant. Lack of manpower and funding are primary concerns. 23