scholarly journals Potential of local plant Eleocharis dulcis for wastewater treatment in constructed wetlands system: review

2021 ◽  
Vol 896 (1) ◽  
pp. 012030
Author(s):  
L F Santosa ◽  
Sudarno ◽  
B Zaman
Keyword(s):  
Wastewater Treatment ◽  
Constructed Wetlands ◽  
Constructed Wetland ◽  
Vital Role ◽  
Pollutant Loads ◽  
Local Plant ◽  
System Review ◽  
Eichornia Crassipes ◽  
Tidal Swamps ◽  
Phragmites Sp

Abstract Plants have a vital role in constructed wetlands because they provide oxygen in removing pollutants, as a medium of microorganisms, as absorbers of nutrients and other pollutants, must be resistant to high levels of pollutant loads and stressful conditions. Several plants have potential for constructed wetland, namely Phragmites sp., Typha sp., Canna indica, Colocasia esculenta, Eichornia crassipes, Eleocharis dulcis, and others. Eleocharis dulcis is a local plant commonly found in South Kalimantan. Eleocharis dulcis in the local, namely Purun tikus, grows in tidal swamps and grows in areas of high soil acidity (pH 2.5 – 3.5). Eleocharis dulcis can be used in tackling reclamation waste of acid sulfate soil which can absorb 1.45% of N elements; Cu 15 ppm; P 0.08%; Zn 48 ppm; Mg 0.16%; Fe 1.386 ppm; S 0.18%; Mn 923 ppm; K 2.05%; and Ca 0.22%. According to several studies that have been carried out, Eleocharis dulcis have been shown to reduce several pollutant loads such as Hg 99.84%; Pb; Cd; Fe 85.68%; SO4; Mn 78.94%; BOD 98.74%; COD 98.73%; and turbidity 80% also. The local plant Eleocharis dulcis can be potentially used as wastewater treatment, especially in a constructed wetland systems.

Enhancement of the performance of constructed wetlands for wastewater treatment in winter: the effect of Tubifex tubifex

RSC Advances ◽  
2016 ◽  
Vol 6 (41) ◽  
pp. 34841-34848 ◽  
Author(s):  
Yan Kang ◽  
Jian Zhang ◽  
Huijun Xie ◽  
Zizhang Guo ◽  
Pengfei Li ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Constructed Wetlands ◽  
Constructed Wetland ◽  
Water Purification ◽  
Tubifex Tubifex ◽  
Batch Systems ◽  
Potential Use

An improved constructed wetland (CW) with the addition ofTubifex tubifexin winter was studied in laboratory batch systems. The outcomes of this study indicate that the potential use ofTubifex tubifexcould improve the ecosystem and water purification by CWs in winter.

Constructed wetland for water quality improvement: a case study from Taiwan

2010 ◽  
Vol 62 (10) ◽  
pp. 2408-2418 ◽  
Author(s):  
C. Y. Wu ◽  
J. K. Liu ◽  
S. H. Cheng ◽  
D. E. Surampalli ◽  
C. W. Chen ◽  
...  
Keyword(s):  
Water Quality ◽  
Wastewater Treatment ◽  
Constructed Wetlands ◽  
Constructed Wetland ◽  
Water Reuse ◽  
Oxygen Demand ◽  
Sediment Oxygen Demand ◽  
Nucleotide Sequence Analysis ◽  
Sediment Samples ◽  
Wetland System

In Taiwan, more than 20% of the major rivers are mildly to heavily polluted by domestic, industrial, and agricultural wastewaters due to the low percentage of sewers connected to wastewater treatment plants. Thus, constructed or engineered wetlands have been adopted as the major alternatives to clean up polluted rivers. Constructed wetlands are also applied as the tertiary wastewater treatment systems for the wastewater polishment to meet water reuse standards with lower operational costs. The studied Kaoping River Rail Bridge Constructed Wetland (KRRBCW) is the largest constructed wetland in Taiwan. It is a multi-function wetland and is used for polluted creek water purification and secondary wastewater polishment before it is discharged into the Kaoping River. Although constructed wetlands are feasible for contaminated water treatment, wetland sediments are usually the sinks for organics and metals. In this study, water and sediment samples were collected from the major wetland basins in KRRBCW. The investigation results show that more than 97% of total coliforms (TC), 55% of biochemical oxygen demand (BOD), and 30% of nutrients [e.g. total nitrogen (TN), total phosphorus (TP)] were removed via the constructed wetland system. However, results from the sediment analyses show that wetland sediments contained high concentrations of metals (e.g. Cu, Fe, Zn, Cr, and Mn), organic contents (sediment oxygen demand = 1.7 to 7.6 g O2/m2 d), and nutrients (up to 18.7 g/kg of TN and 1.22 g/kg of TN). Thus, sediments should be excavated periodically to prevent the release the pollutants into the wetland system and causing the deterioration of wetland water quality. Results of polymerase chain reaction (PCR), denaturing gradient gel electrophoresis (DGGE), and nucleotide sequence analysis reveal that a variation in microbial diversity in the wetland systems was observed. Results from the DGGE analysis indicate that all sediment samples contained significant amounts of microbial ribospecies, which might contribute to the carbon degradation and nitrogen removal. Gradual disappearance of E. coli was also observed along the flow courses through natural attenuation mechanisms.

Application of constructed wetlands for wastewater treatment in Nepal

2001 ◽  
Vol 44 (11-12) ◽  
pp. 381-386 ◽  
Author(s):  
R.R. Shrestha ◽  
R. Haberl ◽  
J. Laber ◽  
R. Manandhar ◽  
J. Mader
Keyword(s):  
Wastewater Treatment ◽  
Constructed Wetlands ◽  
Constructed Wetland ◽  
Wastewater Treatment Plants ◽  
River System ◽  
Present Condition ◽  
Successful Implementation ◽  
Urban Centers ◽  
Untreated Wastewater ◽  
Under Construction

Surface water pollution is one of the serious environmental problems in urban centers in Nepal due to the discharge of untreated wastewater into the river-system, turning them into open sewers. Wastewater treatment plants are almost non-existent in the country except for a few in the Kathmandu Valley and even these are not functioning well. Successful implementation of a few constructed wetland systems within the past three years has attracted attention to this promising technology. A two-staged subsurface flow constructed wetland for hospital wastewater treatment and constructed wetlands for treatment of greywater and septage is now becoming a demonstration site of constructed wetland systems in Nepal. Beside these systems, five constructed wetlands have already been designed and some are under construction for the treatment of leachate and septage in Pokhara municipality, wastewater in Kathmandu University, two hospitals and a school. This paper discusses the present condition and treatment performance of constructed wetlands that are now in operation. Furthermore, the concept of the treatment wetlands under construction is also described here. With the present experience, several recommendations are pointed out for the promotion of this technology in the developing countries.

scholarly journals A Study to Assess the Effectiveness of Constructed Wetland Technology for Polluted Surface Water Treatment

2019 ◽  
Vol 35 (2) ◽  
Author(s):  
Nguyen Cong Manh ◽  
Phan Van Minh ◽  
Nguyen Tri Quang Hung ◽  
Phan Thai Son ◽  
Nguyen Minh Ky
Keyword(s):  
Wastewater Treatment ◽  
Surface Water ◽  
Phragmites Australis ◽  
Constructed Wetlands ◽  
Constructed Wetland ◽  
Environmental Science ◽  
Ecological Engineering ◽  
Pilot Scale ◽  
Vertical Flow ◽  
Surface Water Treatment

Abstract: The study aims to assess the applying effectiveness of constructed wetland technology for polluted surface water treatment. The experimental models were operated with 2 hydraulic loadings of 500mL/min/m2 (T1) and 1500mL/min/m2 (T2). The reed grass (Phragmites australis) was selected for the studying process. The surface water resource was removed from the pollutant components (TSS, BOD5, COD) and harmful microorganisms (fecal coliform) which aim to protect the water quality and aquatic ecosystems. The results showed the treatment effectiveness of loading of 500mL/min/m2 is higher than the loading of 1500mL/min/m2, especially in the reed planting trial. In particular, the treatment efficiency of pollutants such as TSS, BOD5, COD reached a high rate of 85%, 90%, and 87%, respectively. In addition, ANOVA statistical analysis showed the effectiveness of water quality parameters belong to two loadings were statistically significant (P<0.05). Thus, the surface water pollutant removal by subsurface vertical flow constructed wetland technology could be contributed to promoting the sustainable agricultural development. Keywords: Constructed wetland, removal, surface water, Phragmites australis, pollution. References: [1] Z. ElZein, A. Abdou, I.A. ElGawad, Constructed Wetlands as a Sustainable Wastewater Treatment Method in Communities, Procedia Environmental Sciences, 34 (2016) 605-617. https://doi.org/10. 1016/j.proenv.2016.04.053. [2] R.H. Kadlec, S.D. Wallace, Treatment Wetlands, CRC Press/Lewis Pucblishers, Boca Raton, FL, 2009.[3] J. Vymazal, Constructed Wetlands for Wastewater Treatment, Water, 2(3) (2010) 530-549. https://doi. org/10.3390/w2030530. [4] L. Volker, E. Elke, L.W. Martina, L. Andreas, M.G. Richard, Nutrient Removal Efficiency and Resource Economics of Vertical Flow and Horizontal Flow Constructed Wetlands, Ecological Engineering, 18(2) (2001) 157-171. https://doi.org/ 10.1016/S0925-8574(01)00075-1. [5] M. Ilda, F. Daniel, P. Enrico, F. Laura, M. Erika, Z. Gabriele, A cost-effectiveness analysis of seminatural wetlands and activated sludge wastewater-treatment systems, Environmental Management, 41(1) (2007) 118-129. https://doi.org /10.1007/s00267-007-9001-6. [6] J. Vymazal, The use of constructed wetlands with horizontal sub-surface flow for various types of wastewater, Ecological Engineering, 35 (2009) 1-17. https://doi.org/10.1016/j.ecoleng.2008.08.016. [7] S. Katarzyna, H.G. Magdalena, The use of constructed wetlands for the treatment of industrial wastewater, Journal of Water and Land Development, 34 (2017) 233–240. https://doi.org /10.1515/jwld-2017-0058. [8] S. Dallas, B. Scheffe, G. Ho, Reedbeds for greywater treatment-case study in Santa Elena-Monteverde, Costa Rica, Central America. Ecol. Eng. 23 (2004) 55-61. https://doi.org/10.1016/ j.ecoleng.2004.07.002. [9] Tổng cục Thống kê, Niên giám thống kê Việt Nam, NXB Thống kê, Hà Nội, 2018.[10] Bộ Tài nguyên và Môi trường, Báo cáo hiện trạng môi trường quốc gia – Môi trường nước mặt, Hà Nội, 2012.[11] UBND tỉnh Bình Dương, Quyết định số 3613/QĐ-UBND về việc Quy hoạch tài nguyên nước tỉnh Bình Dương giai đoạn 2016 - 2025, tầm nhìn đến năm 2035, Bình Dương, 2016.[12] M. Mirco, T. Attilio, Evapotranspiration from pilot-scale constructed wetlands planted with Phragmites australis in a Mediterranean environment, Journal of Environmental Science and Health, 48(5) (2013) 568-580. https://doi.org/ 10.1080/10934529.2013.730457. [13] K.J. Havens, H. Berquist, W.I. Priest, Common reed grass, Phragmites australis, expansion into constructed wetlands: Are we mortgaging our wetland future? Estuaries, 26 (2003) 417-422. https://doi.org/10.1007/BF02823718. [14] S. Aboubacar, R. Mohamed, A. Jamal, A. Omar, E. Samira, Exploitation of Phragmites australis (Reeds) in Filter Basins for the Treatment of Wastewater, Journal of Environmental Science and Technology, 11 (2018) 56-67. https://doi.org/10. 3923/jest.2018.56.67. [15] S.I. Abou-Elela, M.S. Hellal, Municipal wastewater treatment using vertical flow constructed wetlands planted with Canna, Phragmites and Cyprus, Ecol. Eng. 47 (2012) 209-213. https://doi.org/10.1016/j. ecoleng.2012.06.044.[16] H. Brix, A.C. Arias, The use of vertical flow constructed welands for on-site treatment of domestic wastewater: New Danish guidelines, Ecological Engineering, 25 (2005) 491-500. https://doi.org/10.1016/j.ecoleng.2005.07.009. [17] J. Puigagut, J. Villasenor, J.J. Salas, E. Becares, J. Garcia, Subsurface-flow constructed wetlands in Spain for the sanitation of small communities: A comparison study, Ecological Engineering, 30 (2007) 312-319. https://doi.org/10.1016/j.ecoleng. 2007.04.005. [18] R. Kadlec, R. Knight, Treatment Wetlands, CRC Press, 1996.[19] L. Yang, H.T. Chang, M.N.L. Huang, Nutrient removal in gravel-and soil-based wetlands microcosms with and without vegetation, Ecological Engineering, 18 (2001) 91-105. https://doi.org/10.1016/S0925-8574(01)00068-4. [20] D. Steer, L. Fraser, J. Boddy, B. Seibert, Efficiency of small constructed wetlands for subsurface treatment of single-family domestic effluent, Ecological Engineering, 18 (2002) 429-440. https://doi.org/10.1016/S0925-8574(01)00104-5. [21] J. Vymazal, The use of subsurface constructed wetlands for wastewater in Czech Republic: 10 years experience, Ecological Engineering, 18 (2002) 633-646. https://doi.org/10.1016/S0925-8574(02)00025-3. [22] C.S. Akratos, V.A. Tsihrintzis, Effect of temperature, HRT, vegetation and porous media on removal efficiency of pilot-scale horizontal subsurface flow constructed wetlands, Ecological Engineering, 29 (2007) 173-191. https://doi.org/ 10.1016/j.ecoleng.2006.06.013.

Using a constructed wetland for non-point source pollution control and river water quality purification: a case study in Taiwan

2010 ◽  
Vol 61 (10) ◽  
pp. 2549-2555 ◽  
Author(s):  
C. Y. Wu ◽  
C. M. Kao ◽  
C. E. Lin ◽  
C. W. Chen ◽  
Y. C. Lai
Keyword(s):  
Water Quality ◽  
Wastewater Treatment ◽  
Quality Improvement ◽  
Point Source ◽  
River Water ◽  
Constructed Wetlands ◽  
Constructed Wetland ◽  
River Water Quality ◽  
Water Quality Improvement ◽  
Wetland System

The Kaoping River Rail Bridge Constructed Wetland, which was commissioned in 2004, is one of the largest constructed wetlands in Taiwan. This multi-function wetland has been designed for the purposes of non-point source (NPS) pollutant removal, wastewater treatment, wildlife habitat, recreation, and education. The major influents of this wetland came from the local drainage trench containing domestic, agricultural, and industrial wastewaters, and effluents from the wastewater treatment plant of a paper mill. Based on the quarterly investigation results from 2007 to 2009, more than 96% of total coliforms (TC), 48% of biochemical oxygen demand (BOD), and 40% of nutrients (e.g. total nitrogen, total phosphorus) were removed via the constructed wetland system. Thus, the wetland system has a significant effect on water quality improvement and is capable of removing most of the pollutants from the local drainage system before they are discharged into the downgradient water body. Other accomplishments of this constructed wetland system include the following: providing more green areas along the riversides, offering more water assessable eco-ponds and eco-gardens for the public, and rehabilitating the natural ecosystem. The Kaoping River Rail Bridge Constructed Wetland has become one of the most successful multi-function constructed wetlands in Taiwan. The experience obtained from this study will be helpful in designing similar natural treatment systems for river water quality improvement and wastewater treatment.

Application of Constructed Wetland to Rural Domestic Wastewater Treatment in China

2014 ◽  
Vol 1073-1076 ◽  
pp. 1011-1014
Author(s):  
Fang Chen ◽  
Qiang Yao
Keyword(s):  
Wastewater Treatment ◽  
Constructed Wetlands ◽  
Constructed Wetland ◽  
Rural Economy ◽  
Domestic Wastewater ◽  
Treatment Technology ◽  
Domestic Wastewater Treatment ◽  
The One ◽  
Low Nitrogen

Constructed wetland is a new wastewater treatment technology. It not only is more effective in wastewater treatment, but also has good eco-landscapes value. According to the characteristics of domestic wastewater discharge in rural, constructed wetlands is a key technology to solving this problem in China. Application of constructed wetland to Chinese rural domestic wastewater treatment was reviewed in this paper. On this basis, the issues in the application of constructed wetland encountered, and future trends are discussed. On the one hand, constructed wetlands were prone to clogging and low nitrogen removal efficiency. On the other hand, some existing constructed wetlands were abandoned due to poor maintenance and management. Therefore, in order to play better the role of wastewater treatment, anti-blocking ability and denitrification efficiency of constructed wetlands should be improved. Meanwhile, the maintenance and management of constructed wetlands should be strengthened. Application of constructed wetlands in the rural area provides a strong guarantee for sustainable development of rural economy.

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 Integrating MFT-qPCR techniques in constructed wetland faecal bacterial purification monitoring; a case of a typical tropical hybrid constructed wetland system

2018 ◽  
Vol 78 (9) ◽  
pp. 2008-2018 ◽  
Author(s):  
Donde Oscar Omondi ◽  
Muia Anastasia Wairimu ◽  
Makindi Stanley Maingi ◽  
Onyango Godfrey Otieno ◽  
Kibet Caroline Jepkorir ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Constructed Wetlands ◽  
Constructed Wetland ◽  
Membrane Filtration ◽  
Pathogenic Bacteria ◽  
Quantitative Polymerase Chain Reaction ◽  
Health Concern ◽  
Human Pathogens ◽  
Purification Efficiency ◽  
Wetland System

Abstract The sanitation control of pathogens in the tropical effluents needs much more attention to ensure ecosystem health integrity and the safety of human health. The common use of chemicals in achieving this in wastewater treatment has remained unsustainable due to much health concern. Indeed, based on the numerous challenges associated with faecal pathogenic bacteria in wastewaters, the focus is now on achieving higher purification efficiencies in the elimination of the human pathogens from wastewater through eco-sustainable systems such as constructed wetlands (CWs). Hence, the need to explore the application of constructed wetlands in wastewater treatment under specific local environmental conditions for accurate understanding and improved treatment efficiency. This study therefore aimed at monitoring constructed wetlands faecal bacteria purification efficiency through integrated non-molecular membrane filtration technique and molecular quantitative polymerase chain reaction (MFT-qPCR) technique. The results showed some shortfall in the treatment system and also proved that integrating MFT-qPCR in faecal bacterial purification monitoring within a constructed wetland system provides a more accurate and reliable outcome. Additionally, the wetland purification efficiency was low (&lt;80%) with the dissolved oxygen posing the strongest influence on faecal pathogenic bacterial purification trend across the wetland. Hence, the need to regularly carry out dredging and macrophyte harvesting as well as the use of holistic and more integrative approaches such as MFT-qPCR in managing and monitoring the performance of CWs in faecal pathogen eradication for improved CWs purification efficiency.

Biota participating in wastewater treatment in a horizontal flow constructed wetland

2001 ◽  
Vol 44 (11-12) ◽  
pp. 211-214 ◽  
Author(s):  
J. Vymazal ◽  
V. Sládeček ◽  
J. Stach
Keyword(s):  
Wastewater Treatment ◽  
Constructed Wetlands ◽  
Constructed Wetland ◽  
Horizontal Flow ◽  
Municipal Sewage ◽  
Wastewater Filtration ◽  
Oxygen Conditions ◽  
Cyanobacteria And Algae ◽  
Different Levels ◽  
Inflowing Water

During the period 1996-1997, three constructed wetlands with sub-surface horizontal flow were investigated. All systems are designed to treat municipal sewage from small villages (150, 200 and 300 PE). The survey included microscopical identification of organisms in both wastewater and filtration substrate. The organisms were used as an indication of oxygen conditions (aerobic, anoxic and anaerobic) in the particular microenvironment. Saprobiological terms characterizing different levels of saprobity were employed to characterize inflowing wastewater, filtration bed and outflowing water. The occurrence of organisms was correlated with BOD5 values in particular profiles. It has been found that the biocenosis in the inflowing wastewater differs from those found in the filtration bed and water outflowing from the vegetated beds. The organisms were grouped into those living under anaerobic and anoxic conditions and those living under aerobic conditions. More than 70 species of bacteria, amoebae, ciliates, rotifers, colorless flagellates, cyanobacteria and algae were found and the most important 45 species were figured in a plate together with saprobiological information for each species. Biota of the inflowing water is usually restricted to bacteria, ciliata and colorless flagellata while the organisms found in outflowing water as well as in periphyton growing on outflow structures indicate 2-3 levels better quality.

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