Nitrogen removal from rural domestic wastewater by subsurface wastewater infiltration system: A review

Yang, Ping; Hou, Rongrong; Li, Danping; Yuan, Rongfang; Wang, Fei; Chen, Zhongbing; Zhou, Beihai; Chen, Huilun

doi:10.1016/j.psep.2022.01.012

Cited by 26 publications

(5 citation statements)

References 92 publications

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“…According to Yang et al [ 51 ], nitrogen removal mechanisms depend on wastewater composition, environmental and operating conditions, such as nitrification and denitrification processes and the possible coexistence of partial nitrification to nitrite or nitrate. Nitrate content in the unpurified wastewater (S1) was 0.5 mg/L while the nitrite was absent.…”

Section: Resultsmentioning

confidence: 99%

The Potential Application of Natural Clinoptilolite-Rich Zeolite as Support for Bacterial Community Formation for Wastewater Treatment

et al. 2022

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The aim of this study was to investigate the use of natural zeolite as support for microbial community formation during wastewater treatment. Scanning electron microscopy (SEM), thermal decomposition and differential thermogravimetric curves (TGA/DGT) techniques were used for the physicochemical and structural characterization of zeolites. The chemical characterization of wastewater was performed before and after treatment, after 30 days of using stationary zeolite as support. The chemical composition of wastewater was evaluated in terms of the products of nitrification/denitrification processes. The greatest ammonium (NH4+) adsorption was obtained for wastewater contaminated with different concentrations of ammonium, nitrate and nitrite. The wastewater quality index (WWQI) was determined to assess the effluent quality and the efficiency of the treatment plant used, showing a maximum of 71% quality improvement, thus suggesting that the treated wastewater could be discharged into aquatic environments. After 30 days, NH4+ demonstrated a high removal efficiency (higher than 98%), while NO3+ and NO2+ had a removal efficiency of 70% and 54%, respectively. The removal efficiency for metals was observed as follows (%): Mn > Cd > Cr > Zn > Fe > Ni > Co > Cu > Ba > Pb > Sr. Analysis of the microbial diversity in the zeolite samples indicated that the bacteria are formed due to the existence of nutrients in wastewater which favor their formation. In addition, the zeolite was characterized by SEM and the results indicated that the zeolite acts as an adsorbent for the pollutants and, moreover, as a support material for microbial community formation under optimal conditions. Comparing the two studied zeolites, NZ1 (particle size 1–3 mm) was found to be more suitable for wastewater treatment. Overall, the natural zeolite demonstrated high potential for pollutant removal and biomass support for bacteria community growth in wastewater treatment.

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Section: Resultsmentioning

confidence: 99%

The Potential Application of Natural Clinoptilolite-Rich Zeolite as Support for Bacterial Community Formation for Wastewater Treatment

et al. 2022

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“…Pollutant removal and greenhouse gas emission processes in SWIS are significantly affected by external and internal environmental conditions, as well as design and operation parameters (P. Yang, Hou, Li, et al, 2022). Specifically, the microbially driven N transformation process can be influenced by factors such as nutrient availability, hydraulic conditions, DO content, substrate materials, and plant species (H. M. Wu et al, 2023).…”

Section: Factors Affecting N Removal and N 2 O Emissionmentioning

confidence: 99%

“…The Niimi system incorporates an impermeable anaerobic tank filled with sand or other fillers below the distribution pipe, as illustrated in Figure 3. The pipe is surrounded by gravel, wrapped in synthetic fibers, and topped with surface soil (P. Yang, Hou, Li, et al, 2022). Upon sewage discharge from the pipe, it initially accumulates in the anaerobic tank and then rises to the soil under capillary force.…”

Section: Intensification Of Treatment Performancementioning

confidence: 99%

Subsurface wastewater infiltration systems for nitrogen pollution control

Zhou,

Li,

Wang

et al. 2024

Water Environment Research

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Subsurface wastewater infiltration systems (SWISs) are suggested to be a cost‐effective and environmentally friendly method for sewage treatment. However, a comprehensive summary of the relevant mechanisms and optimization methods for nitrogen (N) removal in SWIS is currently lacking. In this review, we first summarize the N transformation mechanisms in SWIS. The impact of operational parameters on the N removal efficiency is then delineated. To enhance pollutant removal and minimize resource wastage, it is advisable to maintain a wet–dry ratio of 1:1 and a hydraulic loading rate of 8–10 cm/day. The organic load should be determined based on influent characteristics to optimize the balance between sewage treatment and nitrous oxide (N2O) emission. Finally, various strategies and modifications have been suggested to enhance pollutant removal efficiency and reduce N2O emissions in SWIS, such as artificial aeration, supply electron donors, and well‐designed structures. Overall, greater emphasis should be placed on the design and management of SWIS to optimize their co‐benefits while effectively controlling N pollution.Practitioner Points SWISs are often considered black boxes with their efficiency depending on hydraulic characteristics, biological characteristics, and substrate properties. Biological nitrification coupled with denitrification is considered to be the major N removal process. Increasing the reduction of N2O to the inert N2 form is a potential mechanism to mitigate global warming. Strategies such as artificial aeration, supply electron donors, and well‐designed structures are suggested to improve N removal performance.

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“…Thus, the research and development of efficient decontamination treatments based on the local situation has become an important scientific subject. At present, the main treatment technologies for rural domestic sewage include biological approaches (such as anaerobic–anoxic–oxic, membrane bioreactors, anaerobic digestion, and septic tanks) [ 75 ], ecological approaches (such as constructed wetland, ponds, and soil infiltration systems) [ 76 ], and combined treatment approaches [ 77 , 78 ]. Zhong et al used bibliometric software to analyze 512 relevant papers between 1991 and 2022, and concluded that constructed wetlands are the most widely used option in treating rural domestic sewage due to the ease of combination with other treatment technologies [ 77 ].…”

Section: The Eco-agricultural Industrial Chain Of “Crop Farming Breed...mentioning

confidence: 99%

The Eco-Agricultural Industrial Chain: The Meaning, Content and Practices

Liu

Yang

Zhu

et al. 2023

IJERPH

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Lucid waters and lush mountains are invaluable assets. Resource-saving and environmentally friendly industrial structures, production, and living modes are pursued continuously for sustainable ecological development. According to the Second National Pollution-Source Survey, agricultural non-point pollution is still the most important source of the current water pollution. In order to improve the water environment and control the pollution, the meaning and content of the eco-agricultural industrial chain was introduced. Based on this conception, the eco-agricultural industrial chain, integrating a whole circular system with different sessions of crop farming, animal breeding, agricultural product processing, and rural living, was innovatively put forward to control the agricultural non-point pollution and protect the water environment systematically for the first time in this paper. The sustainable development was realized at a large scale from the reduction and harmlessness at the source, resource utilization in the process, and ecological restoration in the end. Core techniques were innovated based on the integration of agricultural industries to achieve the high-quality and green development of agriculture. The system included ecological breeding technologies, ecological cultivation technologies, as well as rural sewage treatment and recycling technologies, in the principle of reduce, reuse, and resource. Based on this, the agricultural production changed from the traditional mode of “resources–products–wastes” to the circulation pattern of “resources–products–renewable resources–products”. Thus, the final aim could be achieved to realize the material’s multilevel use and energy conversion in the system. The eco-agricultural industrial chain technology was proven to be efficient to achieve both the good control of agricultural non-point pollution and an effective improvement in the water quality.

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Nitrogen removal from rural domestic wastewater by subsurface wastewater infiltration system: A review

Cited by 26 publications

References 92 publications

The Potential Application of Natural Clinoptilolite-Rich Zeolite as Support for Bacterial Community Formation for Wastewater Treatment

The Potential Application of Natural Clinoptilolite-Rich Zeolite as Support for Bacterial Community Formation for Wastewater Treatment

Subsurface wastewater infiltration systems for nitrogen pollution control

The Eco-Agricultural Industrial Chain: The Meaning, Content and Practices

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