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

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.

Download Full-text

Response to shock load of engineered nanoparticles in an activated sludge treatment system: Insight into microbial community succession

Chemosphere ◽

10.1016/j.chemosphere.2015.10.084 ◽

2016 ◽

Vol 144 ◽

pp. 1837-1844 ◽

Cited By ~ 18

Author(s):

Jing Zhang ◽

Qian Dong ◽

Yanchen Liu ◽

Xiaohong Zhou ◽

Hanchang Shi

Keyword(s):

Microbial Community ◽

Activated Sludge ◽

Engineered Nanoparticles ◽

Treatment System ◽

Shock Load ◽

Community Succession ◽

Sludge Treatment ◽

Insight Into ◽

Microbial Community Succession

Download Full-text

A physical model to make short-term management decisions at effluent-irrigated land treatment system

Agricultural Water Management ◽

10.1016/s0378-3774(02)00077-x ◽

2003 ◽

Vol 58 (1) ◽

pp. 55-65 ◽

Cited By ~ 4

Author(s):

B Mahmood ◽

G.L Wall ◽

J.M Russell

Keyword(s):

Physical Model ◽

Treatment System ◽

Short Term ◽

Management Decisions ◽

Land Treatment ◽

Term Management

Download Full-text

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

10.21203/rs.3.rs-381642/v1 ◽

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.

Download Full-text