Paradigms of mangroves in treatment of anthropogenic wastewater pollution

Ouyang, Xiaoguang; Guo, Fen

doi:10.1016/j.scitotenv.2015.12.013

Cited by 89 publications

(32 citation statements)

References 32 publications

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“…The main part of TP was removed by the CW. The processes that can remove nitrogen in constructed wetlands are nitrification, denitrification, nitrogen fixation, NH3 volatilization, plant and microbial uptake, nitrate reduction to ammonium (nitrate-ammonification), mineralization (ammonification), anaerobic ammonia oxidation (ANAMMOX), sorption, fragmentation, desorption, burial, and leaching, whereas phosphorus removal processes in constructed wetland are adsorption, desorption, dissolution, precipitation, plant and microbial uptake, leaching, fragmentation, sedimentation, and mineralization [45,46]. Figure 7 illustrates the removal efficiencies of the bio-ecological system for tested parameters in different stages of the A2O-wetland system.…”

Section: Overall Reactor Performancementioning

confidence: 99%

A Modified Bio-Ecological Process for Rural Wastewater Treatment

2017

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Limited water resources and ensuring access to clean water are critical environmental challenges, especially for the developing world. In particular, rural domestic wastewater has become a significant source for the pollution of freshwater bodies. A modified bio-ecological A2O-wetland system for rural wastewater treatment consisting of a biological unit (anaerobic baffled reactor, anoxic tank and oxic unit, A2O) and an ecological unit (horizontal flow constructed wetland) was developed, and key performance indicators were identified. The bio-ecological treatment system showed high removal efficiency for pollutants, successfully achieving 91%, 85%, 78%, and 92% removal efficiencies for chemical oxygen demand (COD), ammonium (NH 4 -N), total nitrogen (TN), and total phosphorus (TP), respectively. The concentrations of pollutants in the effluent from the system were lower than the Class 1 A regulated values of the Chinese National Standard GB18918-2002. The system offered high removal efficiency, simple operation, and low energy consumption. The A2O-wetland is a good alternative for rural wastewater treatment systems.

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Section: Overall Reactor Performancementioning

confidence: 99%

A Modified Bio-Ecological Process for Rural Wastewater Treatment

2017

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“…Mangrove also receives sewage or aquaculture wastewater in coastal regions. The pollutants in water are removed mainly by tidal scour, plant assimilation, or microbial metabolism (Ouyang & Guo, ). Thus, mangroves are often considered as an economical alternative to sewage treatment plants because of their potential in removing and tolerating pollution.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, mangroves are often considered as an economical alternative to sewage treatment plants because of their potential in removing and tolerating pollution. However, previous studies have not taken into account their potential in removing ARGs (Leung, Cai, & Tam, ; Ouyang & Guo, ; Wong, Tam, & Lan, ; Wu, Tam, & Wong, ). To our knowledge, some literatures reported that novel compounds as potential new antibiotics (Azman, Othman, Velu, Chan, & Lee, ) produce from Actinobacteria and antibiotic resistance microbes (Cabral et al, ; Ghaderpour et al, ; Jalal et al, ; Le, Munekage, & Kato, ) in the mangrove sediments, but few research study on distribution pattern of ARGs in the mangrove ecosystem.…”

Section: Introductionmentioning

confidence: 99%

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Prevalence and proliferation of antibiotic resistance genes in the subtropical mangrove wetland ecosystem of South China Sea

Zhao

Yan

et al. 2019

MicrobiologyOpen

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The emerging pollutants antibiotic resistance genes (ARGs) are prevalent in aquatic environments such as estuary. Coastal mangrove ecosystems always serve as natural wetlands for receiving sewage which always carry ARGs. Currently, the research considering ARG distribution in mangrove ecosystems gains more interest. In this work, we investigated the diversity of ARGs in an urban estuary containing mangrove and nonmangrove areas of the South China Sea. A total of 163 ARGs that classified into 22 resistance types and six resistance mechanisms were found. ARG abundance of the samples in the estuary is between 0.144 and 0.203. This is within the general range of Chinese estuaries. The difference analysis showed that abundances of total ARGs, six most abundant ARGs (mtrA, rpoB, rpoC, rpsL, ef‐Tu, and parY), the most abundant resistance types (elfamycin, multidrug, and peptide), and the most abundant resistance mechanism (target alteration) were significantly lower in mangrove sediment than that in nonmangrove sediment (p < 0.05). Network and partial redundancy analysis showed that sediment properties and mobile genetic elements were the most influential factors impacting ARG distribution rather than microbial community. The two factors collectively explain 51.22% of the differences of ARG distribution. Our study indicated that mangrove sediments have the capacity to remove ARGs. This work provides a research paradigm for analysis of ARG prevalence and proliferation in the subtropical marine coastal mangrove ecosystem.

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“…The growing production of household waste is a challenge, where much of it, destined for unsuitable sites, has a negative impact on ecosystems [10]. Ouyang et al [11], called for the elaboration of methodologies that combine waste disposal and the reduction of environmental impacts, to make a balanced and sustainable system. Agricultural irrigation is one of the most established applications of the reuse of wastewater in the world [9].…”

Section: Introductionmentioning

confidence: 99%

Production Indicators in Cowpea as a Function of the Water–Fertiliser Nexus

et al. 2019

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The bean is an important crop in feeding the global population. In the northeast of Brazil, it is of particular importance, since it is a staple food, which also generates employment and income. The low productivity of the northeast in recent years due to the water crisis combined with the cost of energy has compromised technical and economic viability. This study aimed to evaluate production parameters of cowpea (Vigna unguiculata (L.) Walp.) under different alternative production systems in the northeast of Brazil. The study was carried out in the experimental area of the sewage treatment plant (STP) in the district of Tianguá, Ceará. The experiment comprised six production systems (treatments) divided into split plots distributed in a completely randomised design with fifteen replications. The systems irrigated with wastewater and amended with different of fertilisers were no fertiliser (S2A0), mineral fertiliser (S2A1) and organic fertiliser (S2A2), as well as systems irrigated with drinking (S1A0, S1A1 and S1A2). It was found that under the systems irrigated with wastewater, the average productivity was 1468.8 kg ha−1, whereas under the systems irrigated with drinking water, it was 984.1 kg ha−1. The production systems that used wastewater (S2A0, S2A1 and S2A2) resulted in greater productivity compared to the production models irrigated with drinking water with organic fertiliser (S1A2) and with no fertiliser (S1A0). All the production models irrigated with wastewater yielded similar results to the conventional system with mineral fertiliser, showing that treated wastewater contains sufficient nutrients to potentially replace mineral fertilisers in cowpea production in the northeast of Brazil. The use of treated domestic effluent increases the productivity of irrigated crops.

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Paradigms of mangroves in treatment of anthropogenic wastewater pollution

Cited by 89 publications

References 32 publications

A Modified Bio-Ecological Process for Rural Wastewater Treatment

A Modified Bio-Ecological Process for Rural Wastewater Treatment

Prevalence and proliferation of antibiotic resistance genes in the subtropical mangrove wetland ecosystem of South China Sea

Production Indicators in Cowpea as a Function of the Water–Fertiliser Nexus

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