Effect of Nutrient Removal and Resource Recovery on Life Cycle Cost and Environmental Impacts of a Small Scale Water Resource Recovery Facility

被引：16

作者：

Morelli, Ben ^{[1
]}

Cashman, Sarah ^{[1
]}

Ma, Xin ^{[2
]}

Garland, Jay ^{[3
]}

Turgeon, Jason ^{[4
]}

Fillmore, Lauren ^{[5
]}

Bless, Diana ^{[2
]}

Nye, Michael ^{[3
]}

机构：

[1] Eastern Res Grp, 110 Hartwell Ave, Lexington, MA 02421 USA

[2] US EPA, Natl Risk Management Res Lab, 26 West Martin Luther King Dr, Cincinnati, OH 45268 USA

[3] US EPA, Natl Exposure Res Lab, 26 West Martin Luther King Dr, Cincinnati, OH 45268 USA

[4] US EPA, Region 1,5 Post Off Sq,Suite 100,OEP 5-2, Boston, MA 02109 USA

[5] Water Res Fdn, 1199 N Fairfax St,Suite 900, Alexandria, VA 22314 USA

来源：

SUSTAINABILITY | 2018年 / 10卷 / 10期

关键词：

LCA; LCCA; wastewater treatment; anaerobic digestion; biogas; resource recovery; nutrient removal; water-energy-nutrient nexus; NITROUS-OXIDE EMISSIONS; WASTE-WATER; SEWAGE-SLUDGE; FOOD WASTE; TRACE GASES; SUSTAINABILITY; DIGESTION; METHANE; SYSTEMS; PLANTS;

D O I：

10.3390/su10103546

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

To limit effluent impacts on eutrophication in receiving waterbodies, a small community water resource recovery facility (WRRF) upgraded its conventional activated sludge treatment process for biological nutrient removal, and considered enhanced primary settling and anaerobic digestion (AD) with co-digestion of high strength organic waste (HSOW). The community initiated the resource recovery hub concept with the intention of converting an energy-consuming wastewater treatment plant into a facility that generates energy and nutrients and reuses water. We applied life cycle assessment and life cycle cost assessment to evaluate the net impact of the potential conversion. The upgraded WRRF reduced eutrophication impacts by 40% compared to the legacy system. Other environmental impacts such as global climate change potential (GCCP) and cumulative energy demand (CED) were strongly affected by AD and composting assumptions. The scenario analysis showed that HSOW co-digestion with energy recovery can lead to reductions in GCCP and CED of 7% and 108%, respectively, for the upgraded WRRF (high feedstock-base AD performance scenarios) relative to the legacy system. The cost analysis showed that using the full digester capacity and achieving high digester performance can reduce the life cycle cost of WRRF upgrades by 15% over a 30-year period.

引用

页数：19

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