Flow from the Secondary Clarifiers goes through the UV channel (formerly part of the chlorine contact basin), UV Equipment consists of three banks (6 modules of 40 lamps each) of Ozonia (Suez) Aquaray 40 High Output Vertical lamp system in a single channel at 12.0 MGD flow, UV design - minimum dose of 30 mJ/cm2 to a peak flow of 12 MGD at 65 % UVT. The treatment consists of two Orbal aeration basins, four clarifiers, disinfection, sludge holding and a solids handling facility. The flow then enters 2 Eutek head cells for grit removal. The air pumped to the aerators is conveyed by 3 Hoffman centrifugal blowers. The WPCF is also responsible for the operation of an advanced wastewater treatment plant located at 226 Evansville Avenue in South Meriden. A flow splitter structure preceeds the two 95 ft. Dia. The majority of the bacteria is absorbed/stabilized as well as removal of carbonaceous BOD and nitrogen ammonia. Rotating surface discs with 20 HP rotors provide mixing and aeration, maintaining a channel velocity of 1 fps and provide 86 lbs. Primary settled solids are pumped into a 60 ft. Dia. Provide processing and treatment of septage waste generated by septic tank pumping within Town. Ottumwa’s Water Pollution Control Facility (WPCF) has evolved from its beginnings in the 1950s when it was called the Sewage Treatment Plant. Discharge is normally by gravity flow, but during periods of high river elevation, effluent is pumped with two 30 HP storm water pumps. In January 2010, an $11 million dollar facility expansion was completed, increasing the plant capacity and updating the facility. Although this effluent can be discharged in its present state, a tertiary process is available and used to further increase/enhance the water quality before discharge. The microorganisms present in the RAS have been mixed with the primary effluent in the control structure and now this combination will flow through the aerators with D.O.
The plant effluent then flows down Cascade Aeration Steps, through an outfall pipe and into the Quinnipiac River. The solids present are now allowed to settle to the bottom of these clarifier tanks to be wasted (WAS) to anaerobic digesters or to be returned (RAS) to the mixing basin for reincorporation with the primary effluent. <> After the aeration system’s large cylindrical tanks called clarifiers are incorporated to allow the solid material to separate from liquid, the liquid portion flows from the clarifiers to the chlorine contact chamber where chlorine is added for disinfection purposes from May to October, similar to chlorinating swimming pools. Two (400 HP) Turblex centrifugal blowers increase oxygen transfer to the VLRs and Sludge Conditioning Tanks. Note: Click on the award recipients name(s); The Municipal Wastewater Improvements Project for the Village of Carthage/West Carthage, The Town of Amherst is currently accepting applications for a Senior Electrician at the, This is a graphical representation of the States Sewer Service Area; sewer service adopted amendments; No. The North interceptor is a separated sanitary line as opposed to the Main and South which are both combination lines with associated Combined Sewer Overflows (CSO’s). of the Wastewater Pollution Control Facility WPCF The continued operation ofthe WPCF will provide the anticipated services to the wastewater utility rate payers Wastewater Pollution Control Facility, 410 River Ave., Eugene, OR on Tuesday, June 24, 2014 beginning at 10:00 a.m. which we must meet) to help ensure clean water for future generations. BOD is a method or test used to measure the organic pollutants present in wastewater. endobj transfer and mixing. 8 control gates associated with 4 mix basins are manipulated to modulate the ratio of RAS to primary effluent, balancing the amount of mixed liquor loading that is conveyed to the 4 aerator basins downstream. When these combined sewers get so full, some of the flow gets discharged into creeks or the river. Any business, industrial/commercial/restaurant, new or existing with changes of ownership or discharge amounts, must submit a Conceptual Approval Form. A 54” (South) enters from the south side of Muncie. The screened and de-gritted flow then travels to 2 140’ diameter primary clarifiers. WPCF WASTEWATER DISPOSAL PERMIT EVALUATION Department of Environmental Quality Eastern Region - Pendleton Office 700 SE Emigrant, Suite 330, Pendleton, OR 97801 Telephone: (541) 276-4063 PERMITTEE: Boise Cascade Wood Products, L.L.C. For further description of these systems please take our virtual tour. All rights reserved. The WPCF facility is a secondary wastewater treatment plant designed to treat an average of 2.9 MGD from the City of Redmond. 1 0 obj The Clean Water Act (CWA) establishes the basic structure for regulating discharges of pollutants into the waters of the United States, and regulating quality standards for surface waters. The effluent from 4 of the 6 secondary clarifiers flows through a contact tank and then flows to another basin where the remaining 2 secondary clarifiers join the mix. After the raw flow is pumped to the higher level, it runs through a Parshall flume for flow measurement. 4 0 obj All staff is certified and licensed through the Iowa Department of Natural Resources. The facility also houses a laboratory for water quality analysis and offices for staff.
NASA, This is called a Combined Sewer Overflow (CSO). These tanks settle approximately 60% of organic solids present in the wastewater, and the settled solids are pumped to anaerobic digesters. After the raw flow is pumped to the higher level, it runs through a Parshall flume for flow measurement. An overflow weir allows the filtered flow to pass onto the tertiary effluent channel. Inland Wetlands and Watercourse Commission, Neighborhood Rehabilitation Advisory Board, Public Lands and Parks Dedication Committee, Hunting, Trapping & Sport Fishing Licenses, My Rec Program Registration and Park Reservations, Election Applications and Absentee Ballots, City Council/CT Assembly/Precincts Voter District Maps. Examples: NFL, Meriden, CT 06451203-630-4261, Meriden City Hall is located at 142 East Main Street, Meriden, CT 06450 (203) 630-4000.
This form enables the Water Pollution Control Facility to monitor the amount of the discharge and the pre-treatment process employed or proposed. of oxygen per hour. The raw flow enters the plant through 3 main lines or interceptors. The same activated sludge system is simultaneously used for ammonia removal. As filters need cleaning, an air/water backwash process occurs and the wash water from the wash cycle is collected in a large basin (surge tank) for reintroduction to the head works. Acronym Finder, All Rights Reserved. The WPCF also handles stormwater which comes to the plant through a system called combine sewers. The WPCF receives wastewater from three main sources- the domestic wastewater from the City of Portage la Prairie and Southport, the pre-treated wastewater from Poplar Bluff Industrial Park and the full- strength wastewater from McMillan Industrial Park.
2007 Environmental Leadership Award Winners. The process removed a lot of solid waste from the wastewater.
By the end of the aeration process, the mixed liquor flows into 6 (4 circular & 2 rectangular) secondary clarifiers.
Website Design by Granicus - Connecting People and Government. We operate Ottumwa's Water Pollution Control Facility in accordance with federal and state law (we have a "National Pollutant Discharge Elimination System" [NPDES] Permit which states exacting requirements – Effluent limitations, Monitoring and Reporting requirements, Special Monitoring requirements, etc. In the 1970s, after the US EPA Clean Water Act of 1972 was inacted, Trickling Filters, Secondary Anaerobic Digestion, Final Clarification, and Disinfection were added, which further cleaned the wastewater before it went to the Des Moines River. The diffuser increases the mixing zone of the effluent with the Des Moines River. The filtered flow passes through a tertiary effluent channel, over a 7’ weir for final flow measurement. To meet further water quality standards imposed on the City in 1989, the City began an 8 year, three phase program to meet those standards. About these results. The City of Ottumwa wants residents to be aware that wipes that are sold as “flushable” are in fact not flushable for the City’s sewer pipes. Approximately 90% of the T.S.S., BOD & NH4 has been removed. The mixed liquor is divided between 4 3 pass aerators with fine air diffuser for dissolved oxygen (D.O.) 1, COST OF LANDSPREADING AND HAULING SLUDGE; the sludge hauling operation was; Southside, In response to these threats, the BWQ implemented Industrial Pretreatment Programs, testing of the, spilled from an irrigation line at the Encina, Adoption of Resolution 2013-63 Transferring Extra Capacity Facilities Funds for Willow Lake, Home | Departments | Environmental Services. %���� The 3 flows combine into a single 48” line that enters 2 channels for screening, the first plant process. A 2 meter Roediger Belt Filter Press is used to produced cake, which is in turn stored on a 75 ft. by 225 ft. covered, concrete storage pad. A State of Iowa Certified Laboratory was started at the plant to sample and analyze the wastewater as it entered the plant, during the processes, and before it was released back to the Des Moines River. The, Get detailed Dodge project (Plans & Specs) information on, In 1988 the City of Hubbard began construction of its current, Over 3 million unverified definitions of abbreviations and acronyms in Acronym Attic. CBOD/1000 cu. The wastewater treatment facility employs an activated sludge system for the removal of biochemical oxygen demand. What does WPCF stand for in Wastewater? The treatment consists of two Orbal aeration basins, four clarifiers, disinfection, sludge holding and a solids handling facility. Two 5 HP WAS pumps pump waste solids to the Aerobic Sludge Conditioning Tanks for stabilization. This included converting the Airport Wastewater Plant to a pump station, and routing those flows to the main collection system; eliminating two pump stations; major upgrades at the City's Elm St. Pump Station; and converting the City's Sewage Treatment Plant from a Trickling Filter process, to an Extended Aeration Activated Sludge Process, which became fully operational in 1998. The wastewater treatment facility employs an activated sludge system for the removal of biochemical oxygen demand. <>/Metadata 5220 0 R/ViewerPreferences 5221 0 R>> A 60”(Main) enters from the center of town and a joint 30” /42” (North) enters from the north and west side of town. The activated sludge system is comprised of three rectangular aerated basins operated in a series called plug or extended aeration. Three dry pit centrifugal chopper pumps installed in 2006 – pumps are rated for 180 gpm at 78 ft. of head.
The remaining water in the clarifiers has now reached a level of treatment (after disinfection – Apr./Nov.) The WPCF is also responsible for the operation of an advanced wastewater treatment plant located at 226 Evansville Avenue in South Meriden. Three rectangular Primary Clarifiers – each 2 cell train is 90 ft. by 40 ft. by 8 ft. deep with pre-aeration. A contracted biosolids hauler / applicator land applies the biosolids to agricultural land.
Due to the COVID-19 Virus concerns, the City’s Water Pollution Control Facility has seen an increase in wipes labeled “flushable” being flushed into the City’s sewer mains. suitable for discharge to the receiving stream. Wipes snag on any imperfection in sewer pipes, catch passing debris and grease, and create a “ball” that will grow to eventually plug the pipe. This causes problems both in the collection system which gets overwhelmed during large rainfall events, and at the WPCF.
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