Anaerobic digestion challenge of raw olive mill wastewater

被引：65
作者：
Sampaio, M. A. [1 ]
Goncalves, M. R. [1 ]
Marques, I. P. [1 ]
机构：
[1] Natl Lab Energy & Geol IP LNEG, Bioenergy Unit, P-1649038 Lisbon, Portugal
来源：
BIORESOURCE TECHNOLOGY | 2011年 / 102卷 / 23期
关键词：
Raw olive mill effluent; Biogas; Anaerobic hybrid digester; Phenolic compounds; Organic shocks operation; BIOGAS PRODUCTION; CO-DIGESTION; WASTEWATERS; EFFLUENTS; BIOREMEDIATION; MANURE;
D O I：
10.1016/j.biortech.2011.09.001
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
Olive mill wastewater (OMW) was digested in its original composition (100% v/v) in an anaerobic hybrid. High concentrations (54-55 kg COD m(-3)), acid pH (5.0) and lack of alkalinity and nitrogen are some OMW adverse characteristics. Loads of 8 kg COD m(-3) d(-1) provided 3.7-3.8 m(3) biogas m(-3) d(-1) (63-64% CH4) and 81-82% COD removal. An effluent with basic pH (8.1) and high alkalinity was obtained. A good performance was also observed with weekly load shocks (2.7-4.1, 8.4-10.4 kg COD m(-3) d(-1)) by introducing piggery effluent and OMW alternately. Biogas of 3.0-3.4 m(3) m-(3) d(-1) (63-69% CH4) was reached. Developed biomass (350 days) was neither affected by raw OMW nor by organic shocks. Through the effluents complementarity concept, a stable process able of degrading the original OMW alone was obtained. Unlike what is referred, OMW is an energy resource through anaerobiosis without additional expenses to correct it or decrease its concentration/toxicity. (C) 2011 Elsevier Ltd. All rights reserved.
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收藏
页码：10810 / 10818
页数：9
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