A simple anaerobic system for onsite treatment of domestic wastewater

Lohani, Sunil Prasad; Chhetri, A. B.; Khanal, Sanjay Nath

doi:10.5897/ajest2014.1848

Cited by 7 publications

(4 citation statements)

References 44 publications

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“…The approach to a circular economy and bio-economy resonates with AD systems such as a waste treatment plant or biogas plant and closes the loop of these concepts. AD enables upcycling of disposable waste material into high-end outcomes such as biogas, primarily consisting of methane (55-60%) and carbon dioxide (40%), and nutrient-rich digestate that can be used as fertilizer [13][14][15]. Both biogas as clean energy and digestate as fertilizer could be the sustainable future replacement for energy sources dependent on fossil fuel and fossil fuel-intensive chemical fertilizer, and is an excellent solution for the reduction of the carbon footprint in the environment [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Anaerobic Co-Digestion of Food Waste with Livestock Manure at Ambient Temperature: A Biogas Based Circular Economy and Sustainable Development Goals

2022

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A shift from a linear economy to a circular economy of resource consumption is vital for diverting the value from lost resources to resource-efficient products towards developing a sustainable system. Household digesters provide one opportunity to create a biogas-based circular economy. Because household digesters are typically fed a wide and variable range of substrates, it is important to determine the ideal mixing ratios for them. In this study, an anaerobic digester startup process was analyzed and an assessment of anaerobic co-digestion of food waste with different livestock manures was carried out at ambient temperatures. Food waste (FW), cow manure (CM), poultry litter (PL) and goat manure (GM) were co-digested at mixing ratios (FW:PL:CM) of 2:1:1, 2:2:1, 1:1:2, 1:1:1 (wt/wt) and FW:PL:GM at mixing ratios of 2:1:1 and 1:1:2, at an organic loading rate of 1 g volatile solid (VS)/L/day, and 8% total solids. A maximum methane yield was obtained from co-digestion of FW:PL:GM at a mixing ratio of 2:1:1 in autumn-to-winter conditions, 21–10 °C, while the mixing ratio of FW:PL:CM at 2:2:1, showed negligible methane production under the same temperature condition. This study suggests that co-digestion of food waste and poultry litter with goat manure yields more biogas than other substrate combinations. Therefore, selecting suitable co-substrates with an optimized mixing ratio can promote several key indicators of a biogas-based circular economy towards achieving sustainable development goals 2, 3, 5, 6, 7, 9, 13 and 15.

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Section: Introductionmentioning

confidence: 99%

Anaerobic Co-Digestion of Food Waste with Livestock Manure at Ambient Temperature: A Biogas Based Circular Economy and Sustainable Development Goals

2022

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“…The existing septic tank under normal conditions in 2019 had a wastewater load of almost four times the load during the Covid19 pandemic with a performance at HRT of ± 30 hours capable of achieving the target removal efficiency of COD, TSS, and NH3-N of 54%, 96%, 69 %, respectively, exceeded the target removal efficiency research results, Nasr and Mikhaeil (2013) (Table 2.) [10], Lesmana (2018) which is only 24-40% COD removal efficiency [5], Lohani et al (2015) 30-50% COD removal and 60% TSS removal efficiency [13]. The frequency of desludging is once in 0.5 years because the available mud space is only ± 0.312 m 3 .…”

Section: Performance Evaluation and Problem Solvingmentioning

confidence: 99%

Modification of Septic Tank for Sedimentation Optimization in the Public Toilet (Case Study at Wisdom Park UGM)

Syafira

Ahmad

Saraswati

2021

IOP Conf. Ser.: Earth Environ. Sci.

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Septic tank with sedimentation and anaerobic processes in the same tank is commonly used as a domestic wastewater treatment technology in individual households and communal systems. Although simple to construct, such a system has some problems, such as effluent not meeting the quality requirement and blocking by trash and suspended solid before the second treatment chamber. This research aims to develop a new septic tank design that is simpler to construct and improve performance. The new design uses HDPE material, which is easier to build and standardized compared to the conventional concrete structure. The performance of the new design was compared to the conventional septic tank. The start-up process was monitored for flowrate, COD, TSS, NH3N, PO4-P parameters and evaluated against effluent standards. The study was conducted at public toilet facilities at Wisdom Park UGM and Sunday Morning Market. Results from the study show that the new design effectively improves effluent quality and overcomes the trash problem.

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“…However, its application is still limited to industrial wastewater treatment. Despite its efficiency in wastewater treatment, the UASB reactor has not gained acceptance in developing countries [7].…”

Section: Introductionmentioning

confidence: 99%

Innovation for New Anaerobic Domestic Wastewater Treatment Recycling System in Developing Countries

Fd¹,

Toyoda²,

Matsubara³

2019

Int J Water Wastewater Treat

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Over the years, the spate of water pollution has assumed an alarming dimension globally because of rapid urbanization, aggressive economic development and geometric population growth. This has given rise to acute shortage of freshwater resources. The need for appropriate and efficient treatment technologies to achieve effluent quality that complies with acceptable standard has become imperative. Conventional wastewater treatment technologies are not only costly to build, but also have combined functional and maintenance problem. As a result, forward-looking innovative technologies which are cost effective such as Domestic Multi-Recycler (DMR) is desperately needed to restore poor water pollution that poses serious health threat to most people in developing countries and to improve the soundness of water and wastewater recycling system. Also enhance the quality of treated water discharged from the source to the municipal in a wastewater treatment method anaerobically without requiring electricity and the sludge generated is utilize as fertilizer. Since functional wastewater collection and treatment are of vital importance from the perspective of both environmental and public health. In this paper, the technology application is aimed at contributing immensely to attain goal 6 of sustainable development goals (SDGs). "Ensuring availability and sustainable management of clean water and sanitation for all."

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A simple anaerobic system for onsite treatment of domestic wastewater

Cited by 7 publications

References 44 publications

Anaerobic Co-Digestion of Food Waste with Livestock Manure at Ambient Temperature: A Biogas Based Circular Economy and Sustainable Development Goals

Anaerobic Co-Digestion of Food Waste with Livestock Manure at Ambient Temperature: A Biogas Based Circular Economy and Sustainable Development Goals

Modification of Septic Tank for Sedimentation Optimization in the Public Toilet (Case Study at Wisdom Park UGM)

Innovation for New Anaerobic Domestic Wastewater Treatment Recycling System in Developing Countries

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