Synergistic Effects of High Rate Algal Pond and Submerged Macrophyte Pond on Constructed Wetland for Water Purification

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.

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Porous ZnO/Co3O4/N-doped carbon nanocages synthesized via pyrolysis of complex metal–organic framework (MOF) hybrids as an advanced lithium-ion battery anode

Acta Crystallographica Section C Structural Chemistry ◽

10.1107/s2053229619008222 ◽

2019 ◽

Vol 75 (7) ◽

pp. 969-978 ◽

Cited By ~ 4

Author(s):

Erbo Cheng ◽

Shoushuang Huang ◽

Dayong Chen ◽

Ruting Huang ◽

Qing Wang ◽

...

Keyword(s):

Metal Oxides ◽

Synergistic Effects ◽

Metal Organic Framework ◽

Lithium Ion ◽

Reversible Capacity ◽

Structural Features ◽

High Rate ◽

Discharge Process ◽

Retention Capacity ◽

Metal Organic

Metal oxides have a large storage capacity when employed as anode materials for lithium-ion batteries (LIBs). However, they often suffer from poor capacity retention due to their low electrical conductivity and huge volume variation during the charge–discharge process. To overcome these limitations, fabrication of metal oxides/carbon hybrids with hollow structures can be expected to further improve their electrochemical properties. Herein, ZnO-Co3O4 nanocomposites embedded in N-doped carbon (ZnO-Co3O4@N-C) nanocages with hollow dodecahedral shapes have been prepared successfully by the simple carbonizing and oxidizing of metal–organic frameworks (MOFs). Benefiting from the advantages of the structural features, i.e. the conductive N-doped carbon coating, the porous structure of the nanocages and the synergistic effects of different components, the as-prepared ZnO-Co3O4@N-C not only avoids particle aggregation and nanostructure cracking but also facilitates the transport of ions and electrons. As a result, the resultant ZnO-Co3O4@N-C shows a discharge capacity of 2373 mAh g−1 at the first cycle and exhibits a retention capacity of 1305 mAh g−1 even after 300 cycles at 0.1 A g−1. In addition, a reversible capacity of 948 mAh g−1 is obtained at a current density of 2 A g−1, which delivers an excellent high-rate cycle ability.

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High rate algal pond treatment for water reuse in a marine fish recirculation system: Water purification and fish health

Aquaculture ◽

10.1016/j.aquaculture.2005.11.053 ◽

2006 ◽

Vol 252 (1) ◽

pp. 92-101 ◽

Cited By ~ 35

Author(s):

E. Metaxa ◽

G. Deviller ◽

P. Pagand ◽

C. Alliaume ◽

C. Casellas ◽

...

Keyword(s):

Marine Fish ◽

Water Purification ◽

Water Reuse ◽

High Rate ◽

Fish Health ◽

Recirculation System ◽

System Water

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High Rate Nitrogen Removal in an Alum Sludge-Based Intermittent Aeration Constructed Wetland

Environmental Science & Technology ◽

10.1021/es204105h ◽

2012 ◽

Vol 46 (8) ◽

pp. 4583-4590 ◽

Cited By ~ 116

Author(s):

Yuansheng Hu ◽

Yaqian Zhao ◽

Xiaohong Zhao ◽

Jeyakumar L. G. Kumar

Keyword(s):

Nitrogen Removal ◽

Constructed Wetland ◽

High Rate ◽

Intermittent Aeration ◽

Alum Sludge

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Design of Portable Hybrid Constructed Wetland Reactor for the Treatment of Wastewater

International Journal for Research in Applied Science and Engineering Technology ◽

10.22214/ijraset.2021.34937 ◽

2021 ◽

Vol 9 (VI) ◽

pp. 53-58

Author(s):

Swapnil Hiwrale

Keyword(s):

Wastewater Treatment ◽

Constructed Wetland ◽

Water Purification ◽

Water Solution ◽

Water Shortage ◽

Pilot Scale ◽

General Term ◽

Pollutant Removal ◽

Treated Wastewater ◽

The Way

The idea of the project is predicated on the methodology of preventing the wastewater and the way to form the water pure by using various techniques to form water purification. Nowadays the matter of water shortage increases especially we face the water problem in summer seasons only. we are designing and portable hybrid water solution for the treatment of wastewater during this study, pilot-scale hybrid constructed wetlands (CWs) and multistage horizontal subsurface flow CWs (HF CWs) are studied and compared for the treatment of raw urban wastewater. Additionally, the sand became clogged, while the mulch failed to. The effect of water height on the average pollutant removal wasn't determined but HF10 performed better regarding compliance with legal regulations. With this idea of the project, we could see how we will purify the wastewater and the way much we can see the index of the water purification. A survey of the magnitude of water-related stress at villages on the subject of a college campus or Maharashtra villages affects rural life. Especially in the summer seasons. Problems of availability, accessibility, and quality of Water In Maharashtra 17 districts are that which is laid low with water crises. Maharashtra had approved over R.s 7000 corer to complete the potable project in the scarcity hit area. In India 4% of water resources available from 18% water available in word. Wetland technology can provide cheap and effective wastewater treatment in both temperature and tropical climates and is suitable for adoption in both industrialized likewise as in developing nations this method is utilized for the removal of a range of pollutants and a broad verity of wastewater worldwide. it's one of the simplest methods to treated wastewater at source premises, effectively and economically. This general term accustomed describe different degrees of treatment, so as of skyrocketing treatment levels are preliminary, primary, secondary, and tertiary or advance wastewater treatment. Disinfection to get rid of pathogens sometimes follows the last treatment steps. After treatment of wastewater from constructed wetland reactor, 90 to 95% BOD is going to be satisfied than 85 to 90% Turbidity is going to be removed, and 70 to 80% Nutrient are going to be removed by phytoremediation method. Constructed wetland technology has played a vital role in achieving the changes in wastewater.

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Screening the retention of thirteen pesticides in a small constructed wetland

Water Science & Technology ◽

10.2166/wst.2003.0332 ◽

2003 ◽

Vol 48 (5) ◽

pp. 267-274 ◽

Cited By ~ 33

Author(s):

B.C. Braskerud ◽

K. Haarstad

Keyword(s):

Organic Matter ◽

Redox Potential ◽

Constructed Wetlands ◽

Constructed Wetland ◽

Water Purification ◽

Aquatic Life ◽

Retention Factors ◽

Relative Retention ◽

Hydraulic Load ◽

High Redox Potential

When pesticides are used in arable watersheds, residues are usually found in the recipients. However, small constructed wetlands (CWs) in first and second order streams can reduce the loss of pesticides, since water purification processes are stimulated. This paper presents the results of adding 13 pesticides to a CW in Norway. The relative retention increased between 0 and 67% for the pesticides fluroxypyr, bentazone, dicamba, mecoprop, propiconazole, MCPA, dichlorprop, linuron, fenpropimorph, metalaxyl, metribuzin, metamitron and propachlor. In many cases, the CW reduced the peak concentrations to values regarded as non-toxic for aquatic life, even though the wetland covered less than 0.4% of the watershed surface area, and the average hydraulic load often was above 0.8 m d-1. Possible retention factors were adsorption to soil particles and organic matter, sedimentation of particles, low or high redox-potential, and biodegradation of nitrogen-rich pesticides. However, the retention processes are complex, and are not fully understood.

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