Showing results for: on-site wastewater Articles
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Common Regulatory Practices in Onsite Wastewater Programs: A Willing Suspension of Disbelief
The phrase “a willing suspension of disbelief,” coined by Samuel Taylor Coleridge in his Biographia Literaria published in 1817, refers to the willingness of a person to accept as true the premises of a work of fiction, even if those premises are fantastic or impossible. Prescriptive codes regulating onsite wastewater often carry forward the relics of previous generations even as new ...
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Cryptosporidium infection, onsite wastewater systems and private wells in the arid SouthwestFew prior studies have examined the potential health risks from transmission of enteric parasites via aquifers contaminated by wastewater from onsite systems. A cross-sectional study of 600 residents in households served with either onsite wastewater systems and private wells or city sewer/water systems in three different sites in central New Mexico compared serological responses to ...
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Tennessee - Development 2 case study
Site: Emory Pointe Subdivision Location: Kingston, Tennessee In 2002, development began on a 63-lot subdivision along the banks of the Watts Barr Lake in East Tennessee. Due to very poor soil conditions along the lake, the developers were faced with losing many of their best lots because the ground was not suitable for onsite wastewater disposal. To overcome these site limitations the ...
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Reevaluating onsite wastewater systems: expert recommendations and municipal decision-making
Onsite wastewater treatment systems (OWTS) serve 20–25% of the households in the USA, and large parts of rural Canada, Australia, and Europe. Urbanization and newer environmental standards are leading many communities that currently rely on OWTS to think of alternatives. We study this decision-making in 19 municipalities across the USA through the unique lens of feasibility reports ...
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KSFA Onsite Systems Classroom Training - Case Study
Installer: Kansas Small Flows Association Participants Instructor: Allison Biodig, REHS In August of 2009, around 40 participants were able to take part in the KSFA (Kansas Small Flows Association) "Classroom Training" workshop that taught the fundamentals of Drip Irrigation and Sand Filter onsite wastewater septic systems. The workshop, designed as an introduction to onsite systems, is taught ...
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Evapotranspiration Bed System for the Wastewater from Scenic and Environmentally Sensitive Areas
The Onsite Wastewater Treatment (OWT), also commonly known as Septic Tank System, is supposedly to provide adequate treatment for individual private dwellings. In reality, because of its poor efficiency and lack of sound engineering design, the OWT has become a modern façade to pollute the land and groundwater resource. The evapotranspiration ...
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Particle removal in a novel sequential mechanical filter system loaded with blackwater
A novel sequential mechanical filter system was developed as an alternative primary treatment method for onsite wastewater treatment. The filter combines traditional screening with a novel type of counter-flow filter using wood-shavings as a biodegradable filter matrix. This study tested the system in a batch loading regime simulating high frequency toilet flushing using blackwater from a ...
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Public health risk assessment tool: strategy to improve public policy framework for onsite wastewater treatment systems (OWTS)
Public health risk assessment of onsite wastewater treatment systems (OWTS) in the city of Port Harcourt, Nigeria and its environs was carried out between the period of August 2012 and April 2013. The objective of the study was to show how the public health risk assessment tool can be used to improve public policies on OWTS. The study involved desk study reviews of the related literature on ...
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Septic tank additive impacts on microbial populations
Environmental health specialists, other onsite wastewater professionals, scientists, and homeowners have questioned the effectiveness of septic tank additives. This paper describes an independent, third-party, field scale, research study of the effects of three liquid bacterial septic tank additives and a control (no additive) on septic tank microbial populations. Microbial populations were ...
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Survey of the Home Sewage Disposal Systems in Northeast Ohio
This article reports on failure rates in onsite sewage treatment systems (STS) that were found as part of a comprehensive seven-county survey that was performed under the auspices of the Northeast Ohio Areawide Coordinating Agency (NOACA) during the summer of 2000. The goal was to determine the percentage of onsite, individual home wastewater systems that were “failing.” A system was identified ...
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Onsite Wastewater Treatment for an On Point Budget - Case Study
The Challenge A global manufacturer of key chemical ingredients used in a wide array of products including clothing, carpeting, automobile thermoplastics, computer cases, and sporting equipment, was planning a facility relocation and expansion that presented a significant wastewater treatment challenge. At their previous location, the manufacturer was using a perozone system to treat their ...
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Enhanced nitrogen removal with an onsite aerobic cyclic biological treatment unit
Coastal Zone Act Reauthorization Amendments (CZARA, Section 6217) necessitate the requirement that onsite wastewater disposal units located near impaired surface waters or groundwater to provide at least 50% nitrogen removal. Approximately 38% of Hawaii households use onsite systems including septic tanks and cesspools that cannot meet this requirement. Upgrades to aerobic ...
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Evapotranspiration bed system for the wastewater from scenic and environmentally sensitive areas
The Onsite Wastewater Treatment (OWT), also commonly known as Septic Tank System, is supposedly to provide adequate treatment for individual private dwellings. In reality, because of its poor efficiency and lack of sound engineering design, the OWT has become a modern façade to pollute the land and groundwater resource. The evapotranspiration bed (ET-bed) system can effectively treat ...
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Wastewater Treatment Plant Bangkok Thailand - Case Study
Situation In 2018, Genesis Environmental Service Company completed an onsite wastewater treatment plant for a multinational retailer with a flagship store in Bangkok, Thailand. To reach the government standard, BOD in the effluent had to be below 20 mg/L, and TSS below 30 mg/L prior to environmental discharge.The existing wastewater treatment plant was under-performing and undersized, and with ...
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Functional and Theoretical Overview
Introduction The Advanced Enviro-Septic™ Treatment System (AES), available exclusively from Presby Environmental (PEI), is an innovative, alternative onsite wastewater treatment system that utilizes natural, non-mechanical processes to treat and disperse effluent that has received primary treatment in a conventional septic tank. Expected effluent quality after treatment in an AES System ...
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Onsite wastewater nitrogen reduction with expanded media and elemental sulfur biofiltration
A passive biofiltration process has been developed to enhance nitrogen removal from onsite sanitation water. The system employs an initial unsaturated vertical flow biofilter with expanded clay media (nitrification), followed in series by a horizontal saturated biofilter for denitrification containing elemental sulfur media as electron donor. A small-scale prototype was operated continuously over ...
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Decentralized Treatment: A Modern Approach to Water Management
Water management is waking up to attractive decentralized options In 2013, the National Onsite Wastewater Recycling Association described decentralized wastewater treatment systems as “the redheaded stepchildren of the wastewater industry,” despite their advantages. In general, water management has not yet fully appreciated decentralization’s ability to sidestep problems ...
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Summer Camp Experience - The Minnesota onsite association installs technology to bring wastewater treatment at a Girl Scout camp into the 21st century
After several weeks of preparation by James Brothers Construction, six advanced treatment systems were installed on June 22 and 23 at the Singing Hills Girl Scout Camp near Elysian, Minn., during the Minnesota Onsite Wastewater Association (MOWA) 2007 summer seminar. The event was an opportunity for onsite professionals to get hands-on training and experience installing new technologies while ...
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Barona Resort & Casino, California - Case Study
In mid 2007, AdEdge was contacted by Pacific Advance Civil Engineering group (PACE) to assist a Native American Tribe in Southern California near San Diego to provide a packaged treatment system for uranium removal. The Barona Band of Indians owns and operates the water system serving the Barona Resort and Casino. Water from three existing wells combines together with an average uranium ...
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Groundwater and stream E. coli concentrations in coastal plain watersheds served by onsite wastewater and a municipal sewer treatment system
The goal of this study was to determine if onsite wastewater treatment systems (OWS) were influencing groundwater and surface water Escherichia coli concentrations in a coastal plain watershed. Piezometers for groundwater monitoring were installed at four residences served by OWS and five residences served by a municipal wastewater treatment system (MWS). The residences were located in two ...
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