Optimizing ballast water management: An evaluation of ballast water treatment system performance in challenging water conditions

The movement of ballast water is a major pathway for introducing aquatic invasive species. Ballast water management systems (BWMS) aim to reduce species introductions, but their performance varies under challenging water quality conditions. This study assessed BWMS performance in a freshwater port with impaired water quality by comparing harbour conditions to challenge water criteria for type approval testing defined by the International Maritime Organization and U.S. Environmental Protection Agency, and by analyzing paired harbour uptake and ballast discharge samples. Of 18 harbour samples, 67% approached or exceeded challenge water criteria for ≥50 μm organism abundance, while 22% and 11% exceeded criteria for dissolved organic carbon and total suspended solids. All nine discharge samples met limits for small organisms (≥10 to <50 μm), but eight exceeded limits for larger organisms (≥50 μm) despite >99% reduction from uptake levels. Abundance of larger organisms in discharge was..., Monitoring of environmental water quality in Hamilton Harbour, Lake Ontario, Canada, was conducted by long-term deployment of a YSI EXO multiparameter water quality sonde (YSI Incorporated, Yellow Springs, Ohio, USA) and semi-monthly collection of water samples for more comprehensive laboratory analysis. The sonde was installed at a depth of 5 meters inside a perforated PVC housing attached to the pier wall at Pier 25 (Agrico Canada L.P., Hamilton, Ontario, Canada, 43.272881, -79.786398) from April to December 2022 to take in situ measurements of temperature, pH, dissolved oxygen, salinity, turbidity, chlorophyll a (chl a), and fluorescent dissolved organic matter (fDOM) at hourly intervals.
Discrete samples of harbour water were collected semi-monthly (18 sample collection events) for assessment of live organism abundances and water chemistry. Briefly, a 4-liter Van Dorn bottle (Halltech Environmental and Aquatic Research Inc., Guelph, Ontario, Canada) was repeatedly deployed to a dept..., # Optimizing ballast water management: An evaluation of ballast water treatment system performance in challenging water conditions

File Names: table_1.csv, table_2.csv, table_2.csv, table_4.csv, table_5.csv, table_6.csv, table_7.csv

File Version: 1.0.0

File Format: Comma separated values (CSV)

Data Custodians: Sean Yardley, Oscar Casas-Monroy

Security Use Limitation: none

Primary Investigator: Sarah A. Bailey; [[e-mail]](mailto:[e-mail])

Data Contributors: Sean Yardley, Oscar Casas-Monroy, Robin Rozon, Jocelyn Kydd, Dawson Ogilvie, Sarah A. Bailey

## Description of data and file structure:

This dataset includes measurements of physical, chemical and biological water quality parameters collected in Hamilton Harbour, Lake Ontario during 2022 and 2023. Environmental water quality measurements were taken by long-term deployment of a YSI EXO multiparameter water quality sonde (YSI Incorporated, Yellow Springs, Ohio, USA) and semi-monthly collecti...,

# 优化压载水管理：挑战性水质条件下压载水处理系统性能评估

压载水的移动是水生外来物种入侵的主要传播途径。压载水管理系统（Ballast Water Management Systems, BWMS）旨在减少物种入侵，但在水质恶劣的条件下其性能表现存在差异。本研究针对水质受损的淡水港口，通过将港口实际水质与国际海事组织（International Maritime Organization, IMO）及美国环境保护署（U.S. Environmental Protection Agency, EPA）定义的型式批准测试挑战水质标准进行比对，并分析成对的港口取水与压载水排放样本，评估了压载水管理系统的性能。在18份港口水样中，67%的样本达到或超过了≥50μm粒径生物丰度的挑战水质标准，另有22%和11%的样本分别超出了溶解性有机碳与总悬浮固体的标准限值。全部9份排放样本均满足小型生物（≥10μm且<50μm）的限值要求，但尽管相较于取水样本的丰度已实现99%以上的去除率，其中8份样本仍超出了大型生物（≥50μm）的限值。排放样本中大型生物的丰度为……；本研究通过长期部署YSI EXO多参数水质探头（YSI Incorporated, 美国俄亥俄州耶洛斯普林斯市），并每半月采集水样开展更全面的实验室分析，对加拿大安大略湖汉密尔顿港的环境水质进行了监测。2022年4月至12月期间，该探头被安装于加拿大安大略省汉密尔顿市25号码头（Agrico加拿大有限合伙公司，坐标43.272881, -79.786398）的码头墙面附着的穿孔PVC防护壳内，水深5米处，以每小时1次的频率原位测量水温、pH值、溶解氧、盐度、浊度、叶绿素a（chlorophyll a, chl a）以及荧光溶解性有机质（fluorescent dissolved organic matter, fDOM）。

研究人员每半月采集1次港口离散水样（共18次采样事件），以评估活体生物丰度与水化学指标。简要而言，研究人员使用4升范多恩采水器（Halltech Environmental and Aquatic Research Inc., 加拿大安大略省圭尔夫市）反复下放至指定深度……

文件名：table_1.csv、table_2.csv、table_2.csv、table_4.csv、table_5.csv、table_6.csv、table_7.csv
文件版本：1.0.0
文件格式：逗号分隔值（Comma Separated Values, CSV）
数据保管人：Sean Yardley、Oscar Casas-Monroy
安全使用限制：无
首席研究员：Sarah A. Bailey；邮箱：[e-mail]
数据贡献者：Sean Yardley、Oscar Casas-Monroy、Robin Rozon、Jocelyn Kydd、Dawson Ogilvie、Sarah A. Bailey

## 数据与文件结构说明
本数据集包含2022年至2023年期间在安大略湖汉密尔顿港采集的物理、化学与生物水质参数测量数据。环境水质测量通过长期部署YSI EXO多参数水质探头（YSI Incorporated, 美国俄亥俄州耶洛斯普林斯市）以及每半月采集……