Investigation Of Passive Nitrogen Removal Strategies For Onsite Septic Systems At The Massachusetts Alternative Septic System Test Center
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Investigation Of Passive Nitrogen Removal Strategies For Onsite Septic Systems At The Massachusetts Alternative Septic System Test Center
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Author : George R. Heufelder
language : en
Publisher:
Release Date : 2017
Investigation Of Passive Nitrogen Removal Strategies For Onsite Septic Systems At The Massachusetts Alternative Septic System Test Center written by George R. Heufelder and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with Septic tanks categories.
Continued Operation Of The Massachusetts Alternative Septic System Test Center And The Investigation Of Passive Nitrogen Removal Strategies For Onsite Septic Systems
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Author : George R. Heufelder
language : en
Publisher:
Release Date : 2017
Continued Operation Of The Massachusetts Alternative Septic System Test Center And The Investigation Of Passive Nitrogen Removal Strategies For Onsite Septic Systems written by George R. Heufelder and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with Land treatment of wastewater categories.
Nitrogen Removal From Septic Effluent Utilizing On Site Wastewater Treatment Systems
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Author : Michael A. Urynowicz
language : en
Publisher:
Release Date : 1995
Nitrogen Removal From Septic Effluent Utilizing On Site Wastewater Treatment Systems written by Michael A. Urynowicz and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with categories.
Impact Of Recirculating Nitrified Effluent On The Performance Of Passive Onsite Hybrid Adsorption And Biological Treatment Systems
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Author : Amulya Miriyala
language : en
Publisher:
Release Date : 2018
Impact Of Recirculating Nitrified Effluent On The Performance Of Passive Onsite Hybrid Adsorption And Biological Treatment Systems written by Amulya Miriyala and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with Effluent quality categories.
Approximately 25% of households in the U.S. treat their wastewater onsite using conventional onsite wastewater treatment systems (OWTS). These systems typically include a septic tank or a series of septic tanks followed by a soil absorption system. They effectively remove biochemical oxygen demand (BOD), total suspended solids (TSS), fats and grease but are not designed to remove significant amounts of nitrogen. High nitrogen loading to coastal and ground waters can be dangerous to aquatic life and public health. Hence, there is a need for advanced onsite wastewater treatment systems that can effectively remove nitrogen. Making enhanced nitrogen removal for OWTS as our primary goal, a laboratory scale Hybrid Adsorption and Biological Treatment Systems (HABiTS) was developed and upon observation of its effective nitrogen removal capacity, a pilot demonstration study with two side-by-side HABiTS, one with recirculation and one without recirculation (only forward flow) were constructed and tested at the Northwest Regional Water Reclamation Facility in Hillsborough County (Florida). HABiTS employ biological nitrogen removal and ion exchange for effective nitrogen removal. HABiTS is a two-stage process which uses nitrification for the oxidation of ammonium to nitrate and ion exchange for ammonium adsorption that helps buffer transient loading and also acts as a biofilm carrier in its stage 1 biofilter and it uses tire-sulfur hybrid adsorption denitrification (T-SHAD) in its stage 2 biofilter. These sulfur pellets help promote sulfur oxidation denitrification (SOD) and tire chips are used for nitrate adsorption during transient loading conditions, as biofilm carriers for denitrifying bacteria, and can also be used as organic carbon source to promote heterotrophic denitrification because they leach organic carbon. For this research, HABiTS without recirculation is considered as the control system and the performance of HABiTS with recirculation was tested for its ability to further enhance nitrogen removal from HABiTS. Nitrified effluent recirculation is a common strategy employed in wastewater treatment for enhanced nitrogen removal. It is the reintroduction of semi-treated wastewater to pass through an anoxic pre-treatment chamber to achieve better quality effluent. Recirculation is said to improve and consistently remove nitrogen at any hydraulic loading rate and/or nitrogen concentration. This is because of the dilution of high BOD septic tank effluent with nitrified effluent which lowers COD:TKN ratio and also improves mass transfer of substrates in the stage 1 biofilter. Recirculation also provides some pre-denitrification in the pre-treatment chamber, thereby reducing nitrogen load on the system. The HABiTS with recirculation (R) was run at 1:1 ratio of nitrified effluent recirculation rate to the influent flow rate for 50 days, and at 3:1 ratio for the remaining period of this research (200 days). The forward flow system (FF) was run under constant conditions throughout the research and comparisons between the two systems were made for different water quality parameters (pH, DO, conductivity, alkalinity, TSS, chemical oxygen demand (COD), total nitrogen (TN), total phosphorus (TP) and various nitrogen species). The final effluent ammonium results showed that the system with recirculation removed consistently > 80% NH4+-N during 1:1 and 3:1 recirculation ratios whereas the forward flow system achieved 57% removal. Further, an average of 81% total inorganic nitrogen (TIN) removal from the system influent was seen in the recirculation systems final effluent when compared to an average of 55% in forward flow systems final effluent. This research explains in detail, the impact of nitrified effluent recirculation on enhanced nitrogen removal in onsite systems and the results presented in this thesis proved that nitrified effluent recirculation provides promising enhanced nitrogen removal in an onsite wastewater treatment system.
Position Paper From The Conference
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Author : Waquoit Bay National Estuarine Research Reserve
language : en
Publisher:
Release Date : 1992
Position Paper From The Conference written by Waquoit Bay National Estuarine Research Reserve and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Conservation of natural resources categories.
Development Of A Best Management Practice For Passively Removing Nitrogen From Onsite Septic Systems
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Author : George R. Heufelder
language : en
Publisher:
Release Date : 2019
Development Of A Best Management Practice For Passively Removing Nitrogen From Onsite Septic Systems written by George R. Heufelder and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with Best management practices (Pollution prevention) categories.
On Site Wastewater Treatment Systems For Nitrogen Removal From Septic Tank Effluent
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Author : Brian B. Endter
language : en
Publisher:
Release Date : 1996
On Site Wastewater Treatment Systems For Nitrogen Removal From Septic Tank Effluent written by Brian B. Endter and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with categories.
Soil Based Wastewater Treatment
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Author : Jose A. Amador
language : en
Publisher: John Wiley & Sons
Release Date : 2020-01-22
Soil Based Wastewater Treatment written by Jose A. Amador and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-01-22 with Technology & Engineering categories.
Our book addresses the needs of practitioners, engineers, scientists, regulators, resource managers, planners, and others with a need to know about septic systems. It arose after discussions about the need for a text that integrated current understanding of the hydrologic, physical, chemical, and biological processes involved in the treatment of wastewater using soil. In our experience, people working with septic systems – ourselves included – have a fragmented understanding of what these systems are, how they function, how wastewater moves through soil, how and which pollutants are removed, and how these systems impact the environment and public health. The relevant information is scattered across disciplines, information sources and audiences. This book is an attempt to collect and integrate this information in one place, and provide a scientific framework for understanding soil-based wastewater treatment.
Onsite Wastewater Treatment Systems Manual
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Author :
language : en
Publisher:
Release Date : 2002
Onsite Wastewater Treatment Systems Manual written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Sewage categories.
"This manual contains overview information on treatment technologies, installation practices, and past performance."--Introduction.
Onsite Wastewater Treatment And Disposal Systems
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Author :
language : en
Publisher:
Release Date : 1980
Onsite Wastewater Treatment And Disposal Systems written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Septic tanks categories.
