Technical and economic feasibility of a solar-bio-powered waste utilization and treatment system in Central America

JOURNAL OF ENVIRONMENTAL MANAGEMENT

卷:184

Article

Alvarez, Ronald Esteban Aguilar^1,2  Roman, Mauricio Bustamante^1,2  Kirk, Dana¹  Chavarria, Jose Alberto Miranda³  Baudrit, Daniel²  Pereira, Jose Francisco Aguilar²  Montero, Werner Rodriguez³  Reinhold, Dawn¹  Liao, Wei¹ 

[1] Michigan State Univ, Anaerob Digest Res & Educ Ctr, Biosyst & Agr Engn, E Lansing, MI 48824 USA

[2] Univ Costa Rica, Agr Engn, San Jose, Costa Rica

[3] Univ Costa Rica, Fabio Baudrit Expt Stn, San Jose, Costa Rica

关键词: Solar thermal collector;    Anaerobic digestion;    Constructed treatment wetland;    Reclaimed water;    Methane;   

DOI  :  10.1016/j.jenvman.2016.10.007

来源: Elsevier

【 摘 要 】

The purpose of this study was to implement and evaluate a pilot-scale and closed-loop system that synergistically combines solar thermal collector, anaerobic digester, and constructed treatment wetland to simultaneously treat and utilize organic wastes. The system utilizes 863 kg of mixed animal and food wastes to generate 263 MJ renewable energy, produced 28 kg nitrogen and phosphorus fertilizer, and reclaimed 550 kg water per day. The net revenue considering electricity and fertilizer was $2436 annually. The payback period for the system is estimated to be 17.8 years for a relatively dilute waste stream (i.e., 2% total solids). The implemented system has successfully demonstrated a self-efficient and flexible waste utilization and treatment system. It creates a win-win solution to satisfy the energy needs of the community and address environmental concerns of organic wastes disposal in the region. (C) 2016 Elsevier Ltd. All rights reserved.

【 授权许可】

Free