Constructed Wetlands for Wastewater Management

2014 ◽  
pp. 336-349 ◽  
Author(s):  
Kate V. Heal
Keyword(s):  
Constructed Wetlands ◽  
Wastewater Management

Constructed wetlands for livestock wastewater management

2000 ◽  
Vol 15 (1-2) ◽  
pp. 41-55 ◽  
Author(s):  
Robert L Knight ◽  
Victor W.E Payne ◽  
Robert E Borer ◽  
Ronald A Clarke ◽  
John H Pries
Keyword(s):  
Constructed Wetlands ◽  
Wastewater Management ◽  
Livestock Wastewater

scholarly journals EVALUATION OF TWO-STAGE SUBSURFACE FLOW CONSTRUCTED WETLANDS FOR ABATTOIR WASTEWATER MANAGEMENT

2021 ◽  
Vol 19 (1) ◽  
pp. 101-111
Author(s):  
A.A. BADEJO ◽  
J. M. NDAMBUKI ◽  
W. K. KUPOLATI ◽  
S. ADEYEMO ◽  
D. O. OMOLE ◽  
...  
Keyword(s):  
Growth Rate ◽  
Constructed Wetlands ◽  
Subsurface Flow ◽  
Oxygen Demand ◽  
Organic Content ◽  
Wastewater Management ◽  
Two Stage ◽  
Adequate Treatment ◽  
Untreated Wastewater ◽  
Abattoir Wastewater

Abattoir wastewater is high in organic content, the waste recovery and treatment facility is expensive and this results in indiscriminate dumping into streams without adequate treatment. The effectiveness of using a two-stage subsurface flow constructed wetland to treat abattoir effluent was examined in this study. Diluted abattoir wastewater from Lafenwa Abattoir, Abeokuta, Ogun State, Nigeria was fed into a two-stage Vegetated Subsurface Bed Constructed Wetlands (VSBCW). The VSBCW consisted of 500 mm deep 10-15 mm diameter granite with 150 mm thick overlay of well graded sand planted with locally available Vetiveria nigritana. Grab samples were collected at selected points along Ogun river and measurement of physico-chemical parameters such as: Chemical Oxygen Demand (COD), Biochemical Oxygen Demand (BOD5), Electrical Conductivity (EC), Total Dissolved Solids (TDS) and Total Suspended Solid (TSS) of the influent and effluent from the VSBCW were carried out. Irrigation with water and diluted abattoir wastewater to examine the variation in plant growth rate was also investigated. The results revealed a pollution load reduction as the wastewater moves away from the discharge point but inadequate to meet the FEPA (1991) standard for wastewater discharge into rivers. The VSBCW was observed to reduce the concentration of BOD5, COD, EC, TDS and TSS in the abattoir wastewater by 88.71, 87.28, 45.72, 56.89 and 72.27 % respectively. The growth rate of the V. nigritana reduced by 1.9% when irrigated with abattoir wastewater. The study revealed that locally available V. nigritana in VSBCW is effective in abattoir wastewater treatment and could be use to curtail the pollution caused by discharge of untreated wastewater into rivers.      

scholarly journals Analisis Keberlanjutan Pengendalian Pencemaran Air Limbah Domestik Menggunakan Constructed Wetlands Teknik Surface Flow (SF)

2021 ◽  
Vol 17 (1) ◽  
pp. 13-24
Author(s):  
Iga Maliga ◽  
Chay Asdak ◽  
Efan Yudha Winata
Keyword(s):  
Constructed Wetlands ◽  
Quantitative Methods ◽  
Domestic Wastewater ◽  
Surface Flow ◽  
Social Dimension ◽  
Wastewater Management ◽  
Management Process ◽  
Economic Dimension ◽  
Qualitative And Quantitative Methods ◽  
River Contamination

Along with the significant increase of population in Bandung City at the moment, domestic wastewater management process must be considered to avoid river contamination, which one of the causes is domestic wastewater disposal without any prior management process. This study is located in Bandung City, which the research was performed in Research Center for Water Resources Office (PUSAIR) Bandung by involving residents of RW 09 Kelurahan Dago as respondents. The method used in this research is a combination of qualitative and quantitative methods. This study aims to analyze the sustainability of the domestic wastewater management process which is carried out using constructed wetlands by considering the economic, environmental, social, and technological aspects. The result shows that the sustainability value of the domestic wastewater management process conducted in the PUSAIR office is approximately 65.2% with the status of moderate sustainability. The detail result of each aspects is economic dimension 62.5%; ecological dimension 75%; social dimension 33.3%; and technological dimension 90%.Keywords: Domestic wastewater, Constructed wetlands, Surface flow techniques, Sustainability analysis

scholarly journals Potential Use and Challenges of Constructed Wetlands for Wastewater Treatment and Conservation in Game Lodges and Resorts in Kenya

2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
Richard O. B. Makopondo ◽  
Laban K. Rotich ◽  
Cynthia G. Kamau
Keyword(s):  
Wastewater Treatment ◽  
National Parks ◽  
Constructed Wetlands ◽  
Constructed Wetland ◽  
Wastewater Reuse ◽  
Environmental Conservation ◽  
Conservation Strategy ◽  
Management Systems ◽  
Wastewater Management ◽  
Remote Areas

Constructed wetlands are cost-effective wastewater treatment alternatives that receive worldwide acceptance. For the Kenyan hospitality industry, in particular, constructed wetlands (CWs) provide opportunities for wastewater reuse and recovery of resources, as well as improvements in local environmental conditions. Hospitality establishments produce large volumes of wastewater that is sometimes discharged to the environment without being treated. This is not only harmful to communities living downstream of these rivers but also to the flora and fauna which are the main attraction for most who visit these lodges. This study used qualitative methods to collect and analyze published official government documents, peer-reviewed research articles, and professional reports including leading international and Kenyan case studies to explore how constructed wetlands can be effectively used in game lodges and resorts situated in arid and remote areas of Kenya. The study investigated wastewater management systems adopted by remote game lodges and resorts in Kenya and the potential role, as well as the challenges to adopting constructed wetland (CW) technology. The results indicated that hotels, game lodges, and resorts both internationally and locally are adopting different types of CWs including surface and subsurface flow as alternative nature-oriented wastewater management systems. The study identified opportunities in the use of CWs as a wastewater management and conservation strategy. The results suggest that there are potential challenges which include inadequate expertise and technical support; low volume of discharge during off-seasons; limited space or land; and the attitude of hospitality managers towards constructed wetlands. Based on these preliminary findings, one may conclude that game lodges, ecolodges, and resorts in remote areas are prime candidates for constructed wetland establishment. The study makes specific recommendations with implications for policy and practice to promote sustainable hospitality operations and environmental conservation. It is suggested that future studies test the efficacy and efficiency of CW technology as wastewater management systems in the Kenyan wilderness areas including national parks, game reserves, and forests.

scholarly journals Upflow anaerobic sludge blanket and aerated constructed wetlands for swine wastewater treatment: a pilot study

2017 ◽  
Vol 76 (1) ◽  
pp. 68-78 ◽  
Author(s):  
F. Masi ◽  
A. Rizzo ◽  
N. Martinuzzi ◽  
S. D. Wallace ◽  
D. Van Oirschot ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Constructed Wetlands ◽  
Oxygen Demand ◽  
High Volume ◽  
Upflow Anaerobic Sludge Blanket ◽  
Swine Wastewater ◽  
Classical Solutions ◽  
Anaerobic Sludge ◽  
Wastewater Management ◽  
Anaerobic Sludge Blanket

Swine wastewater management is often affected by two main issues: a too high volume for optimal reuse as a fertilizer and a too high strength for an economically sustainable treatment by classical solutions. Hence, an innovative scheme has been tested to treat swine wastewater, combining a low cost anaerobic reactor, upflow anaerobic sludge blanket (UASB), with intensified constructed wetlands (aerated CWs) in a pilot scale experimental study. The swine wastewater described in this paper is produced by a swine production facility situated in North Italy. The scheme of the pilot plant consisted of: (i) canvas-based thickener; (ii) UASB; (iii) two intensified aerated vertical subsurface flow CWs in series; (iv) a horizontal flow subsurface CW. The influent wastewater quality has been defined for total suspended solids (TSS 25,025 ± 9,323 mg/l), organic carbon (chemical oxygen demand (COD) 29,350 ± 16,983 mg/l), total reduced nitrogen and ammonium (total Kjeldahl nitrogen (TKN) 1,783 ± 498 mg/l and N-NH4+ 735 ± 251 mg/l) and total phosphorus (1,285 ± 270 mg/l), with nitrates almost absent. The overall system has shown excellent performances in terms of TSS, COD, N-NH4+ and TKN removal efficiencies (99.9%, 99.6%, 99.5%, and 99.0%, respectively). Denitrification (N-NO3− effluent concentration equal to 614 ± 268 mg/l) did not meet the Italian quality standards for discharging in water bodies, mainly because the organic carbon was almost completely removed in the intensified CW beds.

Can constructed wetlands treat wastewater for reuse in agriculture? Review of guidelines and examples in South Europe

2016 ◽  
Vol 73 (11) ◽  
pp. 2616-2626 ◽  
Author(s):  
Stevo Lavrnić ◽  
Maurizio L. Mancini
Keyword(s):  
Climate Change ◽  
Constructed Wetlands ◽  
Wastewater Treatment Plants ◽  
Wastewater Reuse ◽  
Domestic Wastewater ◽  
Water Shortage ◽  
National Standards ◽  
Wastewater Management ◽  
Microbiological Parameters ◽  
South Europe

South Europe is one of the areas negatively affected by climate change. Issues with water shortage are already visible, and are likely to increase. Since agriculture is the biggest freshwater consumer, it is important to find new water sources that could mitigate the climate change impact. In order to overcome problems and protect the environment, a better approach towards wastewater management is needed. That includes an increase in the volume of wastewater that is treated and a paradigm shift towards a more sustainable system where wastewater is actually considered as a resource. This study evaluates the potential of constructed wetlands (CWs) to treat domestic wastewater and produce effluent that will be suitable for reuse in agriculture. In South Europe, four countries (Greece, Italy, Portugal and Spain) have national standards that regulate wastewater reuse in agriculture. Wastewater treatment plants (WWTPs) that are based on CWs in these four countries were analysed and their effluents compared with the quality needed for reuse. In general, it was found that CWs have trouble reaching the strictest standards, especially regarding microbiological parameters. However, their effluents are found to be suitable for reuse in areas that do not require water of the highest quality.

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