Anaerobic Co-Digestion of Sewage Sludge and Waste in High Solid State

被引:3
作者
Aboulfotoh, Ahmed [1 ]
Marie, Ahmed [2 ]
El-hefny, Rehab [2 ]
机构
[1] Zagazig Univ, Fac Engn, Environm Engn Dept, El Zakaz Rd, Zagazig 44519 2, Ash Shargia Gov, Egypt
[2] Benha Univ, Environm Engn Dept, Fac Engn Shubra, Fareed Nada St, Banha, Qalubiya Govern, Egypt
关键词
anaerobic co-digestion; thermal pretreatment; hydrolysis; waste; food waste; sludge; FOOD WASTE; ACTIVATED-SLUDGE; THERMAL PRETREATMENT; ORGANIC FRACTION; METHANE PRODUCTION; BIOGAS PRODUCTION; WATER SLUDGE; OPTIMIZATION; HYDROLYSIS; SOLUBILIZATION;
D O I
10.12911/22998993/147835
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
In this study, the effect of thermal pre-treatment (TP) on the physical characteristics and co-digestion of a mixture of food waste and sludge was investigated. The food waste (FW) to sewage sludge (SS) ratio used in this research is 1:2 (VS-based) to form a final concentration of 11.20%. The inoculum to substrate ratio was set at 1:1 (volume-based). Undoubtedly, the results show that TP has changed the physical characteristics of the food waste to sewage sludge mixture. The results show that the pretreatment increased the biogas production from 4385 ml for the untreated reactor to 5685 for the reactor R2(140) at 140 degrees C and the improvement in biogas production reaches 29.65% in the reactor R2(140) and the removal of volatile solids was 58.90%. Therefore, after the biomethane potential test, the temperature of 140 degrees C was found to be optimal in the production of biogas. The optimal condition is to use a mixture of pre-treated SS at the temperature of 140 degrees C and untreated FW, so TP is recommended to be used in anaerobic digestion of the mixture of food waste and sewage sludge.
引用
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页码:1 / 13
页数:13
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