Investigation of the water purification efficiency of land treatment system by using microbial community as an index

2011 ◽  
Vol 32 (1-3) ◽  
pp. 153-160 ◽  
Author(s):  
Yu-Kang Yuan ◽  
Chih-Min Huang ◽  
Jung-Han Cheng
Keyword(s):  
Microbial Community ◽  
Water Purification ◽  
Treatment System ◽  
Purification Efficiency ◽  
Land Treatment

scholarly journals Development of New Compact Water Treatment System for Flue-Gas Condenser for Households

2021 ◽  
Vol 25 (1) ◽  
pp. 563-573
Author(s):  
Oskars Svedovs ◽  
Mikelis Dzikevics ◽  
Vladimirs Kirsanovs ◽  
Ivars Veidenbergs
Keyword(s):  
Particulate Matter ◽  
Water Treatment ◽  
Water Purification ◽  
Flue Gas ◽  
Treatment System ◽  
Physical Parameters ◽  
Water Treatment System ◽  
Purification Efficiency ◽  
Efficiency Rate

Abstract This work is a continuation of the article “Methods for Determining the Performance and Efficiency Parameters of the Flue-gas Condenser Sedimentation Tank”. During the experimental determination of Particulate Matter (PM) physical parameters, a described methodology was used. The results obtained affected the choice of water purification technology. Sedimentation technology was selected but provided that a filter element should be present in the installation. The article describes the types of industrial sedimentation tanks used more often. In condition that the system should be compact, while at the same time the purification efficiency rate should be high, the new suitable design of the water treatment system was developed.

Purification Efficiency of Eight Aquatic Plant Species in an Artificial Floating Island System in Relation to Extracellular Enzyme Activity and Microbial Community

2021 ◽  
Author(s):  
Qingfeng Chen ◽  
You Feng ◽  
Jinye Li ◽  
Qing Li ◽  
Ting Liu
Keyword(s):  
Enzyme Activity ◽  
Microbial Community ◽  
Plant Species ◽  
Aquatic Plant ◽  
Extracellular Enzyme ◽  
Purification Efficiency ◽  
Floating Island ◽  
Oenanthe Javanica ◽  
Island System ◽  
Thalia Dealbata

Abstract An artificial floating island is an ecological restoration technology that aims to create sustainable ecosystems and improve biodiversity. Aquatic plants play an important role in wastewater purification. The floating island system exploits the combination of aquatic plants, microorganisms, and extracellular enzymes to purify wastewater. We investigated the purification efficiency of eight aquatic plant species (Ceratophyllum demersum, Elodea nuttallii, Eichhornia crassipes, lris pseudacorus, lris sibirica, Myriophyllum verticillatum, Thalia dealbata and Oenanthe javanica) cultured in wastewater. The relationships of plant purification capacity with extracellular enzyme activity and microbial community were analyzed to explore the crucial factors that affect the plant purification capacity and the mechanism of pollutants removal in different plant systems. Three plant species, namely Oenanthe javanica, Thalia dealbata, and lris pseudacorus, were the most effective for purification of ammonium-nitrogen (NH4+-N), total phosphate (TP), and chemical oxygen demand (COD) with maximum efficiencies of 76.09%, 85.87%, and 89.10%, respectively. Urease, alkaline phosphatase (AP), and β-glucosidase activities were significantly and positively correlated with root system development (P < 0.05). Activities of urease and AP were positively correlated with NH4+-N and TP removal, respectively. The magnitude of urease and AP activity was generally consistent with the plant’s capacity to remove NH4+-N and TP. β-Glucosidase activity and COD removal were not significantly correlated. The dominant microbial phylum in each species treatment was Proteobacteria. Alphaproteobacteria and Bacteroidia showed > 1% relative abundance and greater involvement in degradation of pollutants in the experimental system. The results provide a scientific and theoretical basis for improvement of the plant purification efficiency of artificial floating island systems.

16S rRNA gene-based comprehensive analysis of microbial community compositions in a full-scale leachate treatment system

2016 ◽  
Vol 122 (6) ◽  
pp. 708-715 ◽  
Author(s):  
Hoang T.N. Dao ◽  
Kyohei Kuroda ◽  
Nozomi Nakahara ◽  
Tsuyoshi Danshita ◽  
Masashi Hatamoto ◽  
...  
Keyword(s):  
Microbial Community ◽  
16S Rrna ◽  
16S Rrna Gene ◽  
Comprehensive Analysis ◽  
Full Scale ◽  
Treatment System ◽  
Rrna Gene ◽  
Leachate Treatment
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