Chemical and Materials Engineering Department, University of Auckland, New Zealand.
National Institute of Water and Atmospheric Research Ltd. (NIWA), PO Box 11-115, Hamilton 3200, New Zealand.
Bioresour Technol. 2015 May;184:202-214. doi: 10.1016/j.biortech.2014.11.004. Epub 2014 Nov 13.
Growing energy demand and water consumption have increased concerns about energy security and efficient wastewater treatment and reuse. Wastewater treatment high rate algal ponds (WWT HRAPs) are a promising technology that could help solve these challenges concurrently where climate is favorable. WWT HRAPs have great potential for biofuel production as a by-product of WWT, since the costs of algal cultivation and harvest for biofuel production are covered by the wastewater treatment function. Generally, 800-1400 GJ/ha/year energy (average biomass energy content: 20 GJ/ton; HRAP biomass productivity: 40-70 tons/ha/year) can be produced in the form of harvestable biomass from WWT HRAP which can be used to provide community-level energy supply. In this paper the benefits of WWT HRAPs are compared with conventional mass algal culture systems. Moreover, parameters to effectively increase algal energy content and overall energy production from WWT HRAP are discussed including selection of appropriate algal biomass biofuel conversion pathways.
日益增长的能源需求和耗水量增加了人们对能源安全和高效废水处理及再利用的关注。废水处理高负荷藻类塘（WWT HRAPs）是一种很有前途的技术，如果气候条件适宜，它可以同时帮助解决这些挑战。WWT HRAPs 具有作为废水处理副产品生产生物燃料的巨大潜力，因为藻类培养和生物燃料生产收获的成本可以由废水处理功能覆盖。一般来说，从 WWT HRAP 中可以以可收获生物质的形式生产 800-1400 GJ/ha/year 的能量（平均生物质能量含量：20 GJ/吨；HRAP 生物质生产力：40-70 吨/公顷/年），可用于提供社区级能源供应。本文比较了 WWT HRAP 与传统大规模藻类培养系统的优势。此外，还讨论了有效提高 WWT HRAP 中藻类能量含量和整体能源产量的参数，包括选择合适的藻类生物质生物燃料转化途径。
