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Author: Ross Nebolsine
Publisher:
ISBN:
Category : Combined sewer overflows
Languages : en
Pages : 356
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Book Description
Pilot plant studies were conducted to develop and demonstrate the capabilities of the deep bed, dual media, high rate filtrate treatment process for storm caused combined sewer overflows. The treatment system is comprised of a drum screen with a 40 mesh screening element (420 microns opening) followed by a deep bed, dual media, high rate filter of five feet of No. 3 anthracite (effective size 4 mm) over three feet of No. 612 Sand (effective size 2 mm). The results show suspended solids removals of 93 percent, with polyelectrolyte addition, at a filtration rate of 24 gpm/sq ft at an average influent suspended solids of 411 mg/l. Reductions in biochemical oxygen demand averaged 65 percent. Capital costs and operating costs for a high rate filtration plant are given. Principal advantages of the proposed system are: high treatment efficiencies, automated operation, and limited space requirements as compared with alternate flotation or sedimentation systems.
Author: Ross Nebolsine
Publisher:
ISBN:
Category : Combined sewer overflows
Languages : en
Pages : 356
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Book Description
Pilot plant studies were conducted to develop and demonstrate the capabilities of the deep bed, dual media, high rate filtrate treatment process for storm caused combined sewer overflows. The treatment system is comprised of a drum screen with a 40 mesh screening element (420 microns opening) followed by a deep bed, dual media, high rate filter of five feet of No. 3 anthracite (effective size 4 mm) over three feet of No. 612 Sand (effective size 2 mm). The results show suspended solids removals of 93 percent, with polyelectrolyte addition, at a filtration rate of 24 gpm/sq ft at an average influent suspended solids of 411 mg/l. Reductions in biochemical oxygen demand averaged 65 percent. Capital costs and operating costs for a high rate filtration plant are given. Principal advantages of the proposed system are: high treatment efficiencies, automated operation, and limited space requirements as compared with alternate flotation or sedimentation systems.
Author: United States Environmental Protection Agency (EPA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722199593
Category :
Languages : en
Pages : 342
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Book Description
High Rate Filtration of Combined Sewer Overflows
Author: Municipal Environmental Research Laboratory
Publisher:
ISBN:
Category : Combined sewer overflows
Languages : en
Pages : 124
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Book Description
![High Rate Filtration of Combined Sewer Overflows [with List of References] PDF](https://books.google.com/books/content/images/frontcover/LPdLAQAACAAJ?fife=w80-h100)
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 339
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Book Description
Author: C. B. Murphy
Publisher:
ISBN:
Category : Combined sewers
Languages : en
Pages : 80
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Book Description
Author: Hydrotechnic Corporation
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Richard Field
Publisher: CRC Press
ISBN: 0203502981
Category : Science
Languages : en
Pages : 270
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Book Description
There are approximately 10,000 combined sewer overflow (CSO) locations in the United States. During peak storm events they can release about 1.2 trillion gallons of waste and up to 95% of a municipality's raw sewage into surface waters. Although many cities have initiated programs, the CSO problem remains largely unsolved and continues to be a majo
Author: Municipal Environmental Research Laboratory
Publisher:
ISBN:
Category : Combined sewer overflows
Languages : en
Pages : 105
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Book Description
Author: Richard Field
Publisher:
ISBN:
Category : Combined sewers
Languages : en
Pages : 44
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Book Description
Control and/or treatment of stormwater discharges and combined sewage overflows from urban areas are problems of increaseing importance in the field of water quality management. Over the past decade much research effort has been expended and a large amount of data has been generated, primarily through the actions and support of the U.S. Environmental Protection Agency's (EPA) Storm and Combined Sewer Research and Development Program. Presented in this text are selected results of a comprehensive investigation and assessment of promising, completed and ongoing projects, representative of the state-of-the-art in abatement theory and technology; a look at recent legislation; and the identification of program needs and emphasis. Combined sewer overflows are major sources of water pollution problems, but even discharges of stormwater alone can seriously affect water quality. Current approaches involve control of overflows, treatment and combinations of the two. Control may involve maximizing treatment with existing facilities, control of infiltration and extraneous inflows, surface sanitation and management, as well as flow regulation and storage. A number of treatment methods have been evaluated including high rate screening and microstraining, ultra high rate filtration, dissolved air flotation, physical/chemical treatment, and modified biological processes. A swirl flow regulator/solids separator of anular shape construction with no moving parts has been developed. High rate disinfection methods including new disinfectants have been applied. Promising approaches involve integrated use of controls and treatment. The most disappointing have generally lacked flexibility in their operation and design. Mathematical models have been developed and successfully applied at multiple levels of sophistication and complexity.
Author: Peter E. Moffa
Publisher:
ISBN:
Category : Combined sewers
Languages : en
Pages : 200
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Book Description
