Co-digestion of food waste in a municipal wastewater treatment plant: Comparison of batch tests and full-scale experiences

被引：115

作者：

Koch, Konrad ^{[1
]}

Plabst, Markus ^{[1
]}

Schmidt, Andreas ^{[2
]}

Helmreich, Brigitte ^{[1
]}

Drewes, Joerg E. ^{[1
]}

机构：

[1] Tech Univ Munich, Chair Urban Water Syst Engn, D-85748 Garching, Germany

[2] Wastewater Treatment Plant Garching Alz, D-84518 Garching, Germany

来源：

WASTE MANAGEMENT | 2016年 / 47卷

关键词：

Co-digestion; Food waste; Sewage sludge; Synergistic effect; Energy autarky; ANAEROBIC-DIGESTION; ORGANIC FRACTION; SEWAGE-SLUDGE; POTENTIAL BMP; SOLID-WASTE; METHANE PRODUCTION; BIOGAS PRODUCTION; PROCESS FAILURE; HYDROLYSIS; ENERGY;

D O I：

10.1016/j.wasman.2015.04.022

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The effects of co-digestion of food waste in a municipal wastewater treatment plant (WWTP) were studied in batch tests. The results obtained were compared with the mass balance of a digester at a full-scale WWTP for a one-year period without and with the addition of co-substrate. The specific methane yield calculated from the balance was 18% higher than the one in the batch tests, suggesting a stimulation of methane generation by co-digestion. It was hypothesized that this increase was caused by shifting the C/N ratio of raw sludge (8.8) to a more favourable ratio of the added food waste (17.7). In addition, potential benefits by adding food waste for energy autarky was investigated. While just 25% of the total energy demand of the plant could be recovered by biogas generation when no co-substrate was fed, this percentage has more than doubled when food waste was added at a ratio of 10% (w/w).(c) 2015 Elsevier Ltd. All rights reserved.

引用

页码：28 / 33

页数：6

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