Effect of first-stage aeration on treatment of domestic sewage in different hybrid constructed wetlands

Yan, Fei-Long; Wang, Yi; Wang, Wen-Huai; Zhang, Heng; Zheng, Yucong; Kou, Xiaomei; Wu, Shizhang; Shao, Tian

doi:10.1007/s11356-021-12449-0

Cited by 3 publications

(2 citation statements)

References 39 publications

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“…At present, some untreated domestic waste and sewage are directly discharged into rivers, lakes, and other surface water bodies in certain underdeveloped rural areas in China, which considerably affects the living environment and the water bodies [8]. Due to their high operational management requirements, high costs, and water quality standards [9], there are some challenges to using integrated treatment processes in these relatively dispersed areas (such as townships).…”

Section: Introductionmentioning

confidence: 99%

How Do Network Embeddedness and Environmental Awareness Affect Farmers’ Participation in Improving Rural Human Settlements?

Xie

Gang-qiao

Wang

et al. 2021

Land

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Based on social embeddedness theory, this paper aims to explore the influence mechanism of network embeddedness and environmental awareness on farmers’ participation in improving rural human settlements (IRHS). This research applies the Logit model and the Bootstrap method, using survey data from 495 farmers in Hubei Province, China. The results show that: (1) relational embeddedness has a significant negative impact on the centralized treatment of farmers’ domestic sewage, implying that strengthening the relationship between farmers and households helps to provide them with centralized treatment for domestic sewage; (2) environmental awareness has a significant positive impact on the centralized treatment of farmers’ domestic sewage, implying that the enhancement of farmers’ environmental awareness increases the promotion centralized treatment for domestic sewage; and (3) structural embeddedness can further affects farmers’ environmental awareness and then affects their participation in the centralized treatment of domestic sewage, implying that environmental awareness has a mediating effect between structural embeddedness and the centralized treatment of farmers’ domestic sewage. Overall, it is necessary not only to encourage the establishment of extension and discussion networks for farmers (relational embeddedness) to participate in IRHS but also to improve environmental education for farmers, especially by increasing their access to environmental knowledge and information (environmental awareness in mountainous areas, and, finally to support farmers. The relationship between the members and the village cadres (structural embeddedness) can further improve farmers’ awareness of participation in IRHS to better guide them in the centralized treatment of domestic waste and domestic sewage.

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Section: Introductionmentioning

confidence: 99%

How Do Network Embeddedness and Environmental Awareness Affect Farmers’ Participation in Improving Rural Human Settlements?

Xie

Gang-qiao

Wang

et al. 2021

Land

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“…The average effluent concentrations are 2.59 mg/L (1#MBR) and 2.32 mg/L (2#MBR) based on the intermittent aeration mode. These findings indicated that intermittent aeration mode does not affect the NH 4 +-N removal efficiency[36]. The effluent of COD and NH 4 + -N concentrations based on continuous and intermittent aeration modes can reach the required "Discharge standard of pollutants for municipal wastewater treatment plant"(GB 18918-2002)[37].…”

mentioning

confidence: 99%

The effect of aeration mode on the operational effectiveness and membrane bioreactors for greywater treatment and membrane fouling

Shi

Yan

Zuo

et al. 2022

Environmental Engineering Research

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This study aims to investigated the effect of aeration mode on membrane bioreactors (MBRs) using a self-designed integrated hollow fiber MBR and flat sheet organic MBR for rural greywater treatment. The pollutant removal efficiency, characteristics of activated sludge and mixed liquor, and mechanisms of membrane fouling were systematically analyzed under intermittent aeration and continuous modes. The results indicate that the permeability of MBRs in intermittent aeration mode is higher than that in the continuous aeration mode when operating at the same aeration rate. Due to the higher extracellular polymeric substance (EPS) and soluble microbial product (SMP) concentrations. The removal rates of TN and TP by both MBRs at the intermittent aeration mode were higher than those in the continuous aeration mode due to the difference in the aeration environment. Compared to the flat-sheet organic membrane, the hollow-fiber membrane surface was more likely to form biofilms, which cause biological fouling.The relative abundance of Thermomonas showed a positive correlation with the EPS concentration, indicating that Thermomonas participates in EPS synthesis. This study provides a theoretical basis for evaluating the influence of aeration modes on MBRs,and would be a useful guide for the better control of membrane fouling and treatment of rural greywater.

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A study on hybrid treatment system for domestic wastewater (sewage) through constructed wetlands for India: A review

Jethwa,

Mishra,

Ray

et al. 2024

Biocatalysis and Agricultural Biotechnology

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Effect of first-stage aeration on treatment of domestic sewage in different hybrid constructed wetlands

Cited by 3 publications

References 39 publications

How Do Network Embeddedness and Environmental Awareness Affect Farmers’ Participation in Improving Rural Human Settlements?

How Do Network Embeddedness and Environmental Awareness Affect Farmers’ Participation in Improving Rural Human Settlements?

The effect of aeration mode on the operational effectiveness and membrane bioreactors for greywater treatment and membrane fouling

A study on hybrid treatment system for domestic wastewater (sewage) through constructed wetlands for India: A review

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