Unintended nutrient imbalance induced by wastewater effluent inputs to receiving water and its ecological consequences

Yindong Tong, Xuejun Wang, James J. Elser

Research output: Contribution to journalArticlepeer-review

Abstract

Eutrophication is the most widespread water quality issue globally. To date, most efforts to control eutrophication have focused on reductions of external nutrient inputs, yet importance of nutrient stoichiometry and subsequent shift in plankton composition in aquatic ecosystem has been largely neglected. To address eutrophication, improved sanitation is one of the United Nations Sustainable Development Goals, spurring the constructions of wastewater treatment facilities that have improved water quality in many lakes and rivers. However, control measures are often targeted at and effective in removing a single nutrient from sewage and thus are less effective in removing the others, resulting in the changes of nutrient stoichiometry. In general, more effective phosphorus removal relative to nitrogen has occurred in wastewater treatment leading to substantial increases in N/P ratios in effluent relative to the influent. Unfortunately, high N/P ratios in receiving waters can impose negative influences on ecosystems. Thus, long-term strategies for domestic wastewater management should not merely focus on the total reduction of nutrient discharge but also consider their stoichiometric balances in receiving waters.

Original languageEnglish (US)
Article number149
JournalFrontiers of Environmental Science and Engineering
Volume16
Issue number11
DOIs
StatePublished - Nov 2022
Externally publishedYes

Keywords

  • Ecosystem functioning
  • Nutrient stoichiometry
  • Wastewater treatment
  • Water quality management

ASJC Scopus subject areas

  • Environmental Science(all)

Fingerprint

Dive into the research topics of 'Unintended nutrient imbalance induced by wastewater effluent inputs to receiving water and its ecological consequences'. Together they form a unique fingerprint.

Cite this