scholarly journals A Constructed Wetland System for Rural Household Sewage Treatment in Subtropical Regions

Water ◽  
2018 ◽  
Vol 10 (6) ◽  
pp. 716 ◽  
Author(s):  
Xinxi Fu ◽  
Xiaofu Wu ◽  
Sangyang Zhou ◽  
Yonghua Chen ◽  
Mingli Chen ◽  
...  
Keyword(s):  
Constructed Wetland ◽  
Sewage Treatment ◽  
Rural Household ◽  
Wetland System

Seasonal and annual performance of a full-scale constructed wetland system for sewage treatment in China

2006 ◽  
Vol 26 (3) ◽  
pp. 272-282 ◽  
Author(s):  
Zhiwen Song ◽  
Zhaopei Zheng ◽  
Jie Li ◽  
Xianfeng Sun ◽  
Xiaoyuan Han ◽  
...  
Keyword(s):  
Constructed Wetland ◽  
Sewage Treatment ◽  
Full Scale ◽  
Wetland System

scholarly journals Sewage Treatment through Constructed Wetland System Tailed by Nanocomposite Clay Filter: A Clean Green Initiative

2021 ◽  
Vol 83 ◽  
pp. 32-54
Author(s):  
Boopathy Usharani ◽  
Namasivayam Vasudevan
Keyword(s):  
Constructed Wetland ◽  
Sewage Treatment ◽  
Vital Role ◽  
First Order Kinetics ◽  
Control Units ◽  
Novel Approach ◽  
Wetland System ◽  
Pathogen Reduction ◽  
And Control

Sewage treatment through constructed wetland is an ecofriendly and sustainable approach proven effective worldwide. Constructed wetland with appropriate species is capable of eliminating all pollutants in sewage, except pathogen removal. An additional polishing treatment is required to eliminate pathogen. Optimization of HLR in CWS was executed by applying first order kinetics. Nanocomposite clay filter with economically viable materials was synthesized and disinfection ability was evaluated. A novel approach integrating constructed wetland system tailed by nanocomposite clay filter was designed. Control was setup with constructed wetland system devoid of plants integrated with clay filter devoid of nanoparticles. The constructed wetland system devoid of plants was used as plants play a vital role in the removal of pollutants. The quality of the influent for (n=20) BOD, COD, TKN, TP, TSS, TDS, SO4, Cl, lead and iron were 248, 345, 26, 4.8, 350, 450, 50, 48, 0.2, 5 mg/L respectively. The quality of effluent in the control was 145, 225, 18, 3.8, 185, 345, 31, 30, 0.6, 2 mg/L for BOD,COD, TKN, TP, TSS, TDS, SO4, Cl, lead and iron respectively. While in the test, 10, 30, 2, 1, 30, 128, 13, 12, BDL, BDL mg/L for BOD, COD, TKN, TP,TSS, TDS, SO4, Cl, lead and iron respectively. The inlet concentration of T.C, F.C and E.coli were 42.1x106-6.3x108, 4.9x105-14.4x106 and 7.8x103-3.8x105 respectively. The pathogen reduction in log removal for test and control units were 5.4 and 1.1 for T.C, 4.4 and 1.2 for F.C and 3 and 1 for E.coli.  Thus it is a clean green initiative combating the limitations of disinfection surpassing the existing barriers.

The efficiency and risk to groundwater of constructed wetland system for domestic sewage treatment - A case study in Xiantao, China

2020 ◽  
Vol 277 ◽  
pp. 123384 ◽  
Author(s):  
Haipeng Wu ◽  
Xiufang Gao ◽  
Meng Wu ◽  
Yi Zhu ◽  
Rongwei Xiong ◽  
...  
Keyword(s):  
Constructed Wetland ◽  
Sewage Treatment ◽  
Domestic Sewage ◽  
Wetland System

Combined biochar vertical flow and free-water surface constructed wetland system for dormitory sewage treatment and reuse

2020 ◽  
Vol 713 ◽  
pp. 136404 ◽  
Author(s):  
X. Cuong Nguyen ◽  
T.C. Phuong Tran ◽  
V. Hoan Hoang ◽  
T. Phuong Nguyen ◽  
Soon Woong Chang ◽  
...  
Keyword(s):  
Constructed Wetland ◽  
Water Surface ◽  
Sewage Treatment ◽  
Free Water ◽  
Vertical Flow ◽  
Free Water Surface ◽  
Wetland System

scholarly journals Performance of constructed wetland system using different species of macrophytes in the treatment of domestic sewage treatment

2021 ◽  
Vol 29 ◽  
Author(s):  
Delvio Sandri ◽  
Ana Paula Reis
Keyword(s):  
Surface Area ◽  
Constructed Wetland ◽  
Potential Evapotranspiration ◽  
Sewage Treatment ◽  
Oxygen Demand ◽  
Continuous Variable ◽  
Ammonium Nitrogen ◽  
Total Phosphate ◽  
In Series ◽  
Wetland System

The objective is to assess the initial performance of a constructed wetland system and the development of the macrophyte species cattail(Typha spp.) (CWt), piripiri (Cyperus giganteus) (CWp), and white garland lily (Hedychium coronarium Koehne) (CWl) and an suncultivated (UNc) on the treatment of sewage from toilets and from a restaurant. Changes in hydrogen potential, electrical conductivity, total suspended solids, total solids, biochemical oxygen demand, chemical oxygen demand, turbidity, nitrate, ammonium nitrogen, total phosphate, hydraulic retention time (HRT), and potential evapotranspiration (PET) and the development and adaptation of macrophytes were measured. The surface area of ??each constructed wetland (CW) had a surface area of 16.25 m2 and average volume treated of 0.40 m3 d-1, with continuous variable horizontal subsurface flow equally fed with sewage previously treated in three septic tanks in series, with an individual useful volume of 5.100 L. The PET in CWt, CWp and CWl was higher than that of UNc. The highest pH values were obtained in the effluent of CWp, CWt, and CWl. The use of macrophytes did not influence the EC, TS, BOD5,20, COD, and nitrate were lower and ammonium nitrogen and total phosphate were higher in the effluent of CWs and UNc in relation to the influent. The efficiency indexes that showed a very strong Pearson correlations (> 90%) were pH correlated with N-NH4+, turbidity correlated with COD, TS correlated with EC, and BOD5,20 and COD correlated with NO3-.Piripiri and cattails showed the best development of plants in the second half of CW.

Water Budget of Constructed Wetland System with Subsurface Vertical Flow in Sub-Humid Tropical Climate

2015 ◽  
Vol 1 (5) ◽  
pp. 235-242
Author(s):  
Édio Damásio da Silva Júnior ◽  
Rogério de Araújo Almeida ◽  
Elisa Rodrigues Siqueira ◽  
Ábio Roduvalho da Silva
Keyword(s):  
Constructed Wetland ◽  
Water Budget ◽  
Tropical Climate ◽  
Vertical Flow ◽  
Humid Tropical Climate ◽  
Wetland System

Municipal wastewater treatment with pond–constructed wetland system: a case study

2005 ◽  
Vol 51 (12) ◽  
pp. 325-329 ◽  
Author(s):  
X. Wang ◽  
X. Bai ◽  
J. Qiu ◽  
B. Wang
Keyword(s):  
Constructed Wetland ◽  
Municipal Wastewater ◽  
Municipal Wastewater Treatment ◽  
Oxidation Pond ◽  
System A ◽  
Treated Effluent ◽  
Wetland System ◽  
Oxidation Ponds ◽  
Better Than

The performance of a pond–constructed wetland system in the treatment of municipal wastewater in Kiaochow city was studied; and comparison with oxidation ponds system was conducted. In the post-constructed wetland, the removal of COD, TN and TP is 24%, 58.5% and 24.8% respectively. The treated effluent from the constructed wetland can meet the Chinese National Agricultural and Irrigation Standard. The comparison between pond–constructed wetland system and oxidation pond system shows that total nitrogen removal in a constructed wetland is better than that in an oxidation pond and the TP removal is inferior. A possible reason is the low dissolved oxygen concentration in the wetland. Constructed wetlands can restrain the growth of algae effectively, and can produce obvious ecological and economical benefits.

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