Remediation effect of pond–ditch circulation on rural wastewater in southern China

Ma, Lin; He, Feng; Jian, Sun; Wang, Long; Xu, Dong; Wu, Zhenbin

doi:10.1016/j.ecoleng.2014.11.036

Cited by 15 publications

(4 citation statements)

References 48 publications

(52 reference statements)

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“…In order to solve this problem, many types of wastewater treatment systems have been developed and widely used, such as constructed wetland system (Childers, 2020;Torrens et al, 2021), high-rate algal ponds (Evans et al, 2005), mineralbased small-scale active filter system (Gustafsson et al, 2008), sequencing batch reactor-biofilm system (Yin et al, 2015). Recently, our group have developed a new rural wastewater treatment system, pond-ditch circulation system (PDCS), which exhibits the advantages of high efficiency, cheap, and simple management and is an appropriate alternative for rural wastewater remediation (Ma et al, 2015a;Ma et al, 2015b).…”

Section: Introductionmentioning

confidence: 99%

Response of Sediment Microbial Communities to the Rural Wastewater in the Pond-Ditch Circulation System

Pan

Liu

et al. 2021

Front. Environ. Sci.

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Microorganisms played important roles in nutrient removal in Pond-ditch circulation system (PDCS). However, dynamics of microbial community in the PDCS, and responses of rhizosphere and non-rhizosphere microbial community to rural wastewater remains unclear. In this paper, average operational taxonomic units numbers of sediment microbial varied from 10,254 to 17,112, and values in rhizosphere were higher than those of the non-rhizosphere (p < 0.05). Bacillus, Clostridium sensu stricto 1, and Geobacter were the predominant genera in PDCS sediment with relative abundances of 0.52–17.61%, 0.26–8.08%, and 0.20–4.58%, respectively. However, Bacillus, Clostridium sensu stricto 1, and Geobacter genera in rhizosphere were more abundant than those in non-rhizosphere at day 30. Chao 1 index ranged from 10,225 to 17,033 and showed significant positive correlations with all sediment properties (p < 0.05). Chao 1 and Shannon indices in rhizosphere were significant positively related to tartaric acid and total organic carbon, respectively; while significant correlation between Shannon and Simpson indices in non-rhizosphere and oxidation-reduction potential were detected (p < 0.05). Redundancy analysis suggested that lactic acids, proteins, and amino acids had strong positive effects on Geobacter and Clostridiu sensu stricto 12 in the rhizosphere; while Bacillus and Clostridium in non-rhizosphere were significantly affected by sediment ammonia nitrogen and nitrate nitrogen. Environmental variables accounted for 66.9 and 60.3% of the total variation for the microbial community of non-rhizosphere and rhizosphere sediments, respectively. Our results highlight that root exudates and sediment available N alter predominant genera in the rhizosphere and non-rhizosphere, respectively, which is benefit for optimizing removal efficiency of PDCSs in large-scale applications.

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Section: Introductionmentioning

confidence: 99%

Response of Sediment Microbial Communities to the Rural Wastewater in the Pond-Ditch Circulation System

Pan

Liu

et al. 2021

Front. Environ. Sci.

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“…Thereafter, the wetland restoration and reconstruction has become a common concern and a research hotpot for scientists. The current research of wetland restoration and reconstruction concentrated on the wetland types of swamps, lakes, rivers and coastal wetlands (Mitsch 2005;Nakamura et al 2006;Tweel and Turner 2012;Li et al 2014b;Ma et al 2015;Moreno-Mateos et al 2015;Cui et al 2018).…”

Section: Development Stage Of Degraded Wetland Ecological Restorationmentioning

confidence: 99%

“…After then, the wetland restoration research successively developed in Taihu of Jiangsu, Chaohu in Anhui, East Lake in Wuhan and coastal wetland. Since 1998 when the catastrophic flood occurred in Yangtze River Basin, the "Returning farmland to lake" has been regarded as an important content of sustainable development and ecological reconstruction in China (Liu et al 2004;Ma et al 2015). In recent years, the coastal wetland restoration research mainly based on the fresh water resources regulation and the nutrient biogeochemstry in the Yellow River Delta, has become one of the core technologies for ecological restoration in degraded coastal wetland (Cui et al 2009;Wang et al 2012;Guan et al 2013).…”

Section: Development Stage Of Degraded Wetland Ecological Restorationmentioning

confidence: 99%

A Comparison of the Development of Wetland Restoration Techniques in China and Other Nations

Zhou

Guan

et al. 2020

Wetlands

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Based on retrieved results of literature and patents related to international wetland ecological restoration, the current status and development of ecological restoration techniques for degraded wetlands in both China and international states were analyzed synthetically. The results showed that the United States was the pioneering country in studies on the wetland ecological restoration, while China began to pay widespread attention from 2000. Compared to the international developed countries, the start time of concern for wetland ecological restoration in China was about 10 years later. The phytoremediation and engineering restoration were the most popular among all the wetland ecological restoration techniques. Besides the United States, the number of publications increased most quickly in China since 2004. The Louisiana State University published most of the researching findings among the international institutions related to wetland ecological restoration. The Chinese Academy of Sciences was the most important institution for wetland restoration study in China. The analysis of the wetland ecological restoration practice in China and international states indicated that the study and application of combined bioremediation techniques would receive more attention for wetland ecological restoration in the future.

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“…During the water demand period of agriculture, the water resources in the ditches, which were derived from precipitation and surface runoff, can be used as the irrigation water source and returned to the farmland. Therefore, ditches maintain the health of the rural water environment and the balance of the ecosystem through regulation of water supply [1].…”

Section: Introductionmentioning

confidence: 99%

Spatial Effects of Urban-Rural Ditch Connectivity Gradient Changes on Water Quality to Support Ditch Optimization and Management

Qiu

Wright

et al. 2021

Sustainability

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Ditch networks play crucial roles in regulating water fluxes with their surroundings. The connectivity of ditches can have great impacts on nutrient migration and transformations. However, connectivity patterns related to ditch networks have rarely been studied, especially the relationships with water quality assessed through spatial analysis. This paper considered ditch connectivity and water quality indicators comprehensively, using spatial autocorrelation and geographically weighted regression (GWR) models, to analyze the impact of ditch connectivity on water quality from urban to rural gradients. The results suggested that water quality in rural areas and towns was better than in suburbs and transition zones, and the different areas exhibited variable spatial ditch connectivity. The Moran’s I index of the connectivity indicators showed the clustering state of spatial distribution, with ditch connectivity explaining 61.06% of changes in water quality. The circularity and network connectivity of the ditches had the most influence on water quality. However, the degree of influence varied with region. Circularity had the greatest impact on water quality in urban areas, and network connectivity had the greatest impact on water quality in township areas. Therefore, future water improvement projects, based on ditch optimization and management, need to consider the more related influencing factors and their spatial differences.

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Remediation effect of pond–ditch circulation on rural wastewater in southern China

Cited by 15 publications

References 48 publications

Response of Sediment Microbial Communities to the Rural Wastewater in the Pond-Ditch Circulation System

Response of Sediment Microbial Communities to the Rural Wastewater in the Pond-Ditch Circulation System

A Comparison of the Development of Wetland Restoration Techniques in China and Other Nations

Spatial Effects of Urban-Rural Ditch Connectivity Gradient Changes on Water Quality to Support Ditch Optimization and Management

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