Anaerobic co-digestion of municipal sludge with fat-oil-grease (FOG) enhances the destruction of sludge solids

Chemosphere ◽  
2022 ◽  
Vol 292 ◽  
pp. 133530
Madan Tandukar ◽  
Spyros G. Pavlostathis
1986 ◽  
Vol 16 (4) ◽  
pp. 295-308 ◽  
M. M. Varma ◽  
W. Wade Talbot

2020 ◽  
Vol 12 (23) ◽  
pp. 9950
Eyob Habte Tesfamariam ◽  
Zekarias Mihreteab Ogbazghi ◽  
John George Annandale ◽  
Yemane Gebrehiwot

Municipal sludge has economic value as a low-grade fertilizer as it consists of appreciable amounts of the macro and micronutrients. When using sludge as fertilizer, the economic aspect should be taken into account. In this study, the following specific objectives were identified: (a) to investigate the economic feasibility of using sludge as a fertilizer; (b) to estimate the maximum economic distance sludge can be transported as a fertilizer; and (c) to test the economic feasibility of selling sludge using commercial inorganic fertilizer as a bench mark. The study showed that for anaerobically digested, paddy dried, municipal sludge consisting of 3% N, 2% P, and 0.3% K the economic feasibility of transporting the sludge was limited to a diameter of 20 km in the arid zone, 28 km in the semi-arid zone, 51 km in the sub humid zone, 66 km in the humid zone, and 75 km in the super-humid zone. Therefore, the economic feasibility of using sludge as a substitute for or complementary to commercial inorganic fertilizer is dictated by the distance between the wastewater care work and the farm, sludge nutrient concentration, agro-ecological zone (rain and temperature), and the real-time commercial inorganic fertilizer price.

2006 ◽  
Vol 132 (6) ◽  
pp. 638-644 ◽  
Jesús A. Cacho Rivero ◽  
Narain Madhavan ◽  
Makram T. Suidan ◽  
Philippe Ginestet ◽  
Jean-Marc Audic

2021 ◽  
Vol 194 ◽  
pp. 116926
Hui Yun ◽  
Bin Liang ◽  
Yangcheng Ding ◽  
Si Li ◽  
Zhenfei Wang ◽  

2021 ◽  
Vol 13 (6) ◽  
pp. 796-800
Ting Zhao ◽  
Zhanbo Hu ◽  
Xin-Sheng Chai ◽  
Yukai Zheng ◽  
Binxin Xu ◽  

This paper reports a new method for the determination of sludge water content by a multiple headspace extraction gas chromatographic (MHE-GC) method. It is based on the water vapor signals in the sample vial from the first five extractions.

2009 ◽  
Vol 55 (No. 2) ◽  
pp. 62-68 ◽  
J. Kára ◽  
Z. Pastorek ◽  
J. Mazancová ◽  
I. Hanzlíková

The basis of the biogas production in agriculture is the processing of waste agricultural products (particularly excrements of farm animals but also phytomass). Different but rather similar is the biogas production from biologically degradable municipal waste (BDMW) and biologically degradable industrial waste (BDIW) coming mainly from food industry. The processing of these wastes in agricultural biogas stations could significantly improve their economy. It is necessary to note that all these biogas stations differ from the wastewater cleaning plants where municipal sludge water from public sewers is processed. The municipal sludge water processing to biogas by anaerobic fermentation is a classical technology introduced all over the world. At present, about 100 wastewater cleaning plants operate in the Czech Republic using regular sludge processing into biogas. Electricity produced is utilised mainly for the needs of own operation of waste water treatment plant (WWTP), partly it is sold into public power net. The heat energy is used for heating in the process and its surplus is utilised for operational and administrative facilities. Usually, the heat and electricity quantities produced do not cover the wastewater cleaning plant operation. Agricultural biogas stations and biogas stations for BDMW processing provide considerably higher gas yields because they work with higher dry matter contents in substratum, i.e. 8–12% (compared with waste water treatment plants – 2–6%), and are able to produce high gas surpluses for following applications. Frequently discussed issue are the processing of slaughter waste and grass (or public green areas at biogas stations).

2019 ◽  
Vol 99 ◽  
pp. 163-171 ◽  
Bo Ma ◽  
Lijuan Liu ◽  
Yazhou Zhao ◽  
Chengliang Zhang ◽  
Zenghui Hu ◽  

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