scholarly journals Assessing the Socio-Environmental Risk of Onsite Wastewater Treatment Systems to Inform Management Decisions

2020 ◽  
Vol 54 (23) ◽  
pp. 14843-14853
Author(s):  
Krista A. Capps ◽  
Jacob M. Bateman McDonald ◽  
Nandita Gaur ◽  
Rebecca Parsons
Keyword(s):  
Wastewater Treatment ◽  
Environmental Risk ◽  
Management Decisions ◽  
Onsite Wastewater ◽  
Onsite Wastewater Treatment Systems ◽  
Onsite Wastewater Treatment ◽  
Wastewater Treatment Systems

Modeling the Effects of Onsite Wastewater Treatment Systems on Nitrate Loads Using SWAT in an Urban Watershed of Metropolitan Atlanta

2017 ◽  
Vol 46 (3) ◽  
pp. 632-640 ◽  
Author(s):  
Nahal Hoghooghi ◽  
David E. Radcliffe ◽  
Mussie Y. Habteselassie ◽  
Jaehak Jeong
Keyword(s):  
Wastewater Treatment ◽  
Urban Watershed ◽  
Onsite Wastewater ◽  
Onsite Wastewater Treatment Systems ◽  
Onsite Wastewater Treatment ◽  
Wastewater Treatment Systems

scholarly journals Efficiency of Iron- and Calcium-Impregnated Biochar in Adsorbing Phosphate From Wastewater in Onsite Wastewater Treatment Systems

2020 ◽  
Vol 8 ◽  
Author(s):  
Sahar S. Dalahmeh ◽  
Ylva Stenström ◽  
Mohamed Jebrane ◽  
Lars D. Hylander ◽  
Geoffrey Daniel ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Adsorption Capacity ◽  
Loading Rate ◽  
Maximum Adsorption Capacity ◽  
Phosphate Solution ◽  
Onsite Wastewater ◽  
Onsite Wastewater Treatment Systems ◽  
Onsite Wastewater Treatment ◽  
Iron And Calcium ◽  
Wastewater Treatment Systems

This study evaluated the potential of biochar impregnated with Fe3+ or Ca2+, or mixed with Polonite®, as a filter material for removal of phosphate (PO4-P) from wastewater in onsite wastewater treatment systems (OWTS). Four treatments with biochar were investigated: unimpregnated biochar (UBC), biochar impregnated with iron Fe3+ (FBC), biochar impregnated with calcium oxide (CBC), and biochar mixed with Polonite® (PBC). In a batch experiment using phosphate solution at concentrations 0.5, 3.3, 6.5, 13, and 26 mg PO4-P L–1, adsorption of PO4-P in the different treatments was modeled using Langmuir and Freundlich isotherms. Column filters (5 diameter × 55 cm height) packed with UBC, FBC, CBC, and PBC were then furnished with raw wastewater over 148 weeks. During this experiment, adsorption of PO4-P was investigated in response to increasing hydraulic loading rate (HLR; 56, 74, and 112 L m–2 day–1) and increasing phosphate loading rate (PLR; 195, 324, 653, and 1715 mg PO4-P m–2 day–1). Among the materials, FBC had the highest maximum adsorption capacity (Qm) based on Langmuir isotherms (3.21 ± 0.01 mg g–1). FBC and CBC showed robust performance with increasing HLR, while increasing PLR increased the amount of PO4-P retained in all filters. After 148 weeks of operation, removal of PO4-P (averaged over the last 18 weeks of operation) was 13 ± 16% for UBC, 40 ± 20% for CBC, 88 ± 12% for FBC, and 30 ± 18% for PBC. The PO4-P amount retained in filters over the 148 weeks was 84.75, 221.75, 358.38, and 152.36 g m–2 in UBC, CBC, FBC, and PBC, respectively. The adsorption capacity of the filters after 148 weeks was 1.50, 4.02, 6.41, and 2.75 mg g–1 for UBC, CBC, FBC, and PBC, respectively. The adsorption capacity values and breakthrough curves showed that low concentrations (i.e., <2.6 mg L–1) of PO4-P in wastewater would allow the FBC filter to remain active for 58 months and the CBC filter for 15 months, before PO4-P removal declined to <70%. In conclusion, biochar impregnated with iron and calcium is a promising solution for removal of PO4-P from wastewater in OWTS.

Nitrifying and Denitrifying Bacterial Communities in Advanced Nitrogen‐Removal Onsite Wastewater Treatment Systems

2018 ◽  
Vol 47 (5) ◽  
pp. 1163-1171 ◽  
Author(s):  
Sara Wigginton ◽  
Elizabeth Brannon ◽  
Patrick J. Kearns ◽  
Brittany Lancellotti ◽  
Alissa Cox ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Nitrogen Removal ◽  
Bacterial Communities ◽  
Onsite Wastewater ◽  
Onsite Wastewater Treatment Systems ◽  
Onsite Wastewater Treatment ◽  
Advanced Nitrogen Removal ◽  
Wastewater Treatment Systems

Community management of onsite wastewater treatment systems- what they want in Mount Gambier, South Australia

2010 ◽  
Vol 5 (1) ◽  
Author(s):  
K. S. Alexander ◽  
K. J. Levett ◽  
J. L. Vanderzalm
Keyword(s):  
Wastewater Treatment ◽  
Management Strategies ◽  
South Australia ◽  
Human Consumption ◽  
Wastewater Management ◽  
Consultation Process ◽  
Onsite Wastewater ◽  
Onsite Wastewater Treatment Systems ◽  
Onsite Wastewater Treatment ◽  
Wastewater Treatment Systems

Effective management of onsite wastewater treatment systems (OWTS) is important in preventing contamination of ecologically sensitive receiving environments, such as surface water and groundwater used for human consumption or contact. Householders play a key role in OWTS management, therefore inadequate householder knowledge of system function, inability to recognise signs of system failures and lack of understanding of maintenance requirements can increase the risk of system failure. A householder survey and community consultation process have been undertaken in conjunction with a biophysical effluent sampling program to reveal community understanding of OWTS, opinions on preferred management strategies, institutional arrangements and possible reactions to future financial costs to householders. Opinions from workshop participants and other stakeholders suggested their community wanted knowledge regarding OWTS functioning and maintenance, in particular, information on the use of suitable household chemicals to maintain treatment performance and continued research into contamination of groundwater sources by wastewater systems to better inform wastewater management strategies. Community participants were divided on the preferred administration and cost of maintenance, with some wanting to retain responsibility for maintenance arrangements by contracting specialised personnel and others suggesting local authorities should take responsibility.

MANAGEMENT PRINCIPLES FOR ONSITE WASTEWATER TREATMENT SYSTEMS

2002 ◽  
Vol 2002 (2) ◽  
pp. 404-411
Author(s):  
Stephen Hogye ◽  
Joyce Hudson ◽  
Robert Rubin ◽  
Barry Tonning
Keyword(s):  
Wastewater Treatment ◽  
Onsite Wastewater ◽  
Onsite Wastewater Treatment Systems ◽  
Onsite Wastewater Treatment ◽  
Wastewater Treatment Systems

scholarly journals Assessment of Nitrogen Inputs into Hunt River by Onsite Wastewater Treatment Systems via SWAT Simulation

Water ◽  
2017 ◽  
Vol 9 (8) ◽  
pp. 610 ◽  
Author(s):  
Supria Paul ◽  
Michaela Cashman ◽  
Katelyn Szura ◽  
Soni Pradhanang
Keyword(s):  
Wastewater Treatment ◽  
Onsite Wastewater ◽  
Onsite Wastewater Treatment Systems ◽  
Nitrogen Inputs ◽  
Onsite Wastewater Treatment ◽  
Wastewater Treatment Systems
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