Performance of co-composting sewage sludge and organic fraction of municipal solid waste at different proportions

Zhang, Difang; Luo, Wenhai; Li, Yun; Wang, Guoying; Li, Guoxue

doi:10.1016/j.biortech.2017.08.136

Cited by 132 publications

(42 citation statements)

References 35 publications

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“…PH is one of the most important factors affecting microbial activity. The average PH of DWS in the four seasons was 7.41, which was consistent with the results of another study (37), it was in the range of manure grade 1 of standard 10716 of Iran. So, DWS of Sari WWTP in terms of Electrical Conductivity and PH is good for agriculture.…”

Section: Potassiumsupporting

confidence: 90%

An investigation of agricultural use potential of dewatered sewage sludge

Aghili

Mehrdadi

Aminzadeh

et al. 2019

Environ Health Eng Manag

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Background: One of the useful applications of Dewatered sludge (DWS) of municipal wastewater treatment plants (WWTPs) is its use as manure in agriculture; therefore, its quality characteristics should be specified. The aim of this research was to determine biological and physicochemical characteristics of DWS of Sari WWTP and compare them with standards, and also to investigate its potential use in agriculture. Methods: Sludge samples were taken from the sewage sludge of Sari WWTP. Sampling and analysis of samples parameters including fecal coliform, salmonella, helminth ova, carbon, nitrogen, C/N, phosphorus, organic matter, potassium, moisture, electrical conductivity, and PH, were performed during four seasons with three replications based on the standard method. Results: The fecal coliform, salmonella, and helminth ova of the DWS were 2.37×106 ± 1.06×106 MPN/1 g d.s weight, 47±12.92 MPN/4 g d.s weight, and 466±61.85 number/4 g d.s weight, respectively, therefore, the DWS of Sari WWTP was categorized in the class B of the EPA standard. The amounts of C/N, organic matter, carbon, nitrogen, phosphorus, potassium, moisture, electrical conductivity, and PH were obtained to be 12.7±1.15, 42.4±3.27%, 24.6±1.89%, 1.94±0.13%, 2.35±0.6%, 0.57±0.13%, 82±3.12%, 1.34±0.21 ds/m, and 7.41± 0.45, respectively. Conclusion: The DWS of Sari WWTP has a good fertility value but it cannot be safely used in agriculture and should be improved for class A by the Processes to Further Reduce Pathogens (PFRP), especially by composting.

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Section: Potassiumsupporting

confidence: 90%

An investigation of agricultural use potential of dewatered sewage sludge

Aghili

Mehrdadi

Aminzadeh

et al. 2019

Environ Health Eng Manag

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“…A similar EC increase observed by Zhang et al [43] was attributed to water evaporation. The increased content of soluble salts indicated the progressive mineralization of OM [42].…”

Section: Ec Variationsupporting

confidence: 82%

Evaluation of the performance of encapsulated lifting system composting technology with a GORE(<sup>R</sup>) cover membrane: Physico-chemical properties and spectroscopic analysis

Al-Alawi

Fels

Benjreid

et al. 2019

Environmental Engineering Research

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Composting is among the most effective integrated waste management strategies used to recycle sewage sludge (SS) waste and generate a useful product. An encapsulated lifting system is a relatively new industrial-scale composting technology. The objective of this study was to evaluate the effectiveness of composting dewatered stabilized SS mixed with green waste using this new technology. The composting process was monitored by changes in the physico-chemical properties, UV-visible spectra, and fourier transform infrared (FTIR) spectra. The composting temperature was steady in the thermophilic range for 24 and 12 d in the intensive and maturation phases, respectively, which fulfilled the disinfection requirement. Moreover, the temperature increased rapidly to 76.8°C within three days, and the thermophilic temperatures peaked twice and lasted longer than in traditional composting, which accelerated SS degradation and decreased the composting period necessary to obtain mature compost. FTIR spectroscopic analysis showed a diminished in methyl group derived from methylene C-H aliphatic groups because of organic matter degradation by microorganisms and an increased number of aromatic chains. The new technology may be a viable and sustainable alternative for SS management that converts waste into compost that is useful as a soil amendment.

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“…Results showed there was no meaningful effect of various turning repetitions on the temperature changes and the quality of compost. Other researchers studied the cocomposting performance of sewage sludge (SS) and organic fraction of municipal solid waste (OFMSW) at various proportions [5]. Results revealed that higher SS proportion could quickly initialize the process; while raising OFMSW prolonging the thermophilic period and expanding the humification degree.…”

Section: Research Backgroundmentioning

confidence: 99%

Nutrient Resources Recovery by a Creative Co-Composting Method of Municipal Solid Wastes and Wastewater Treatment Plant Sludge

Nemati¹,

Samali²,

Tahmoorian³

et al. 2019

Preprint

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The purpose of this study is nutrient resources recovery by achieving the optimal chemical oxygen demand (COD) and carbon to nitrogen ratio (C/N) in co-composting wastewater treatment plant sludge with Municipal Solid Wastes (MSW). In this effort, the co-composting has been conducted in form of a case study in the northern region of Iran. In this research, 192 tests were carried out on four series of samples examined in terms of waste to sludge ratio, different aeration period, the percent of porous materials and the moisture content. This study was carried out at a temperature of 50 °C for a 15 day period by application of the in-vessel system and shows that the best ratio for waste to sludge is 2:1, while the 8 hour period is the best aeration period. The porous material which can be added to the composting process is limited to 15% in weight. In other words, any more or less amount of this material will adversely impact the process. Moreover, this research suggests that the sludge dewatering is not required in such processes. In Addition, the efficiency of both COD and C/N reductions equals to about 40%.

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Performance of co-composting sewage sludge and organic fraction of municipal solid waste at different proportions

Cited by 132 publications

References 35 publications

An investigation of agricultural use potential of dewatered sewage sludge

An investigation of agricultural use potential of dewatered sewage sludge

Evaluation of the performance of encapsulated lifting system composting technology with a GORE(<sup>R</sup>) cover membrane: Physico-chemical properties and spectroscopic analysis

Nutrient Resources Recovery by a Creative Co-Composting Method of Municipal Solid Wastes and Wastewater Treatment Plant Sludge

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