Sediment sampling data from wastewater treatment plant outfalls (NESP MaC 2.4)

This project determined the ecological effect of coastal wastewater treatment plant (WWTP) outfalls in two different coastal settings. Treated effluent, seawater, and marine sediments were collected from two WWTP outfalls located in South Australia (Glenelg & St Kilda). This is a shallow and retentive receiving environment and may accumulate effluent contaminants. Additionally, sediments were collected from another WWTP outfall in New South Wales (Malabar). This deep-water outfall discharges into a highly dispersive environment and offers a point of comparison for contaminant retention with the outfalls located in South Australia.Work focused on five contaminants that water quality managers had identified in previous NESP MaC work (Project 1.16) as being highly important: nutrients and metals (traditional effluent pollutants); and antibiotics, per- and poly-fluoroalkyl substances (PFAS), and microplastics (contaminants of emerging concern). This record describes the results from the sediment sampling component of this study. Results from the effluent and seawater sampling are described separately by the record 'Effluent and seawater sampling data from wastewater treatment plant outfalls' (https://doi.org/10.25959/648J-HR45).本研究明确了两种不同海岸环境下沿海污水处理厂（wastewater treatment plant, WWTP）排污口的生态影响。研究人员从南澳大利亚州的两座WWTP排污口（格莱内尔格与圣基尔达）采集了处理后出水、海水与海洋沉积物样品。该受纳环境为浅水环境且水体滞留性强，易累积排污口排放的污染物。此外，研究人员还从新南威尔士州的另一座WWTP排污口（马拉伯）采集了沉积物样品。该深水排污口向高扩散性海域排放污染物，可作为南澳大利亚州排污口污染物滞留情况的对照点位。本研究聚焦于水质管理方在先前NESP MaC项目（项目1.16）中认定的五类关键污染物：营养盐与重金属（传统出水污染物），以及抗生素、全氟和多氟烷基物质（PFAS）与微塑料（新兴关注污染物）。本数据集记录了本次研究沉积物采样环节的全部结果。污水处理厂排污口出水与海水采样的相关结果已由另一数据集《污水处理厂排污口出水及海水采样数据》（https://doi.org/10.25959/648J-HR45）单独发布。