34 Sampson Street * P.O. Box 128 * Winterport, Maine 04496
Telephone / Fax: (207) 223-5028
Email: wwd@winterportmaine.org
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34 Sampson Street * P.O. Box 128 * Winterport, Maine 04496 Telephone / Fax: (207) 223-5028 Email: wwd@winterportmaine.org |
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With Quality and Assurance |
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Winterport Maine - Winterport Water and Sewer Districts |
        
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Why Wastewater Treatment Is So Important
A network of underground pipes collects the millions of gallons of waste material created by a community. When the waste and water arrive at the wastewater treatment plant, large objects are filtered out with screening devices. The flow of the wastewater is then slowed to allow the sludge to settle. Oils and grease are skimmed off the surface of the effluent sewage. The effluent is then treated with chlorine to kill specific microorganisms that cause disease before the water is returned to the waterways. This process is called primary treatment. This treatment removes about 50 percent of the pollutants found in wastewater. Sludge from the primary treatment process is pumped into a drying unit and then hauled away. This processed sludge is often used as a fertilizer or as fuel. Sludge contaminated with toxic material must be incinerated or buried in a landfill. One way or the other, water returns to the environment. That is why
wastewater treatment is so important. Winterport Wastewater Treatment Facility
The Winterport Wastewater Treatment Facility is a 301(H) waiver primary treatment plant utilizing unit processes of influent pumping, grit removal, clarification, and disinfection for normal flow conditions and swirl concentrations (for removable of readily settleable solids and floatables) and pumping for high flow conditions. The treatment plant went online in 1986 and serves a population of 900. It was originally designed for an average daily flow of 110,000 gallons with a peak flow of 128,000 gallons. The current average daily flow to the facility is 50,000 gallons. Solids removed via clarification accumulate in an Imhoff chamber below the clarifier for storage and digestion. Periodically sludge is withdrawn from the chamber, dewatered and trucked to Plymouth, Maine for composting. The Districts sanitary sewage collection system is many decades old and in some areas repairs / replacement of portions of the system is needed. These areas are subject to a wide range of seasonably variable non-sewage flows often referred to as Inflow & Infiltration. For the most part it is the high non-sewage flows, which cause the most problems, which arise at the facility. The Main Pumping Station is located behind the wastewater treatment plant towards the Penobscot River. It consists of a swirl concentrator, high flow wetwell, normal flow wet wells, drywell high flow pumps, normal flow pumps and associated controls. The pump station receives flow from 2 interceptor sewer lines, one from each side of town, and pumps it to the wastewater treatment plant for primary treatment and then discharges it to the Penobscot River.
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In Winterport, Maine clean water is one of our most precious natural resources. Yet every
time we flush a toilet, pour oil down the drain or clean with strong
household chemicals, we contaminate our supply. Before wastewater can be
released into our waterways, it must go through a process called
wastewater treatment to be decontaminated. 
