Characterizing the biologically available phosphorus fraction of fish farm wastewater and optimizing systems for its removal

水产养殖--在孵化场和养鱼场生产鱼类--是安大略省的一项主要经济活动，具有相当大的扩张潜力。安大略省的鲑鱼生产是加拿大淡水水产养殖业的最大组成部分，每年产生超过5500吨，价值超过3100万美元。磷是水产养殖设施产生的废水中的一种关键营养物质，不幸的是，这与环境退化有关。因此，它必须在加拿大和全球范围内受到监管。Cedar Crest鱼场是安大略省最大的陆上水产养殖设施，正在寻求有效和经济上可行的磷管理和处理策略，特别是考虑到围绕水资源保护的更严格的环境法规。为了促进该部门采取节水措施，并帮助扩大安大略省的水产养殖，有必要确定并投资于实用、有效的技术和战略，以管理鱼类养殖废水中的磷。本研究旨在描述不同磷吸附介质的有效性，并评估它们在雪松养鱼场减磷方面的潜在用途。这项研究的结果将确保雪松佳洁士的长期经济可行性和市场竞争力，同时通过应对该行业可持续增长的重大挑战，使安大略省和加拿大的陆上水产养殖业务受益。

Aquaculture-the production of fish in hatcheries and fish farms-is a major economic activity in Ontario with considerable potential for expansion. Ontario trout production is the largest component of the Canadian freshwater aquaculture sector, generating more than 5,500 tonnes annually with a value of more than $31 million. Phosphorus is a key nutrient found in the wastewaters generated by aquaculture facilities which, unfortunately, is associated with environmental degradation. As such, it must be regulated both in Canada and globally. Cedar Crest Fish Farms, the largest land-based aquaculture facility in Ontario, is seeking effective and economically viable phosphorous management and treatment strategies, particularly in light of more stringent environmental regulations around water conservation. To facilitate the adoption of water conservation in the sector and to help with the expansion of aquaculture in Ontario, it is necessary to identify and invest in practical, effective technologies and strategies to manage phosphorus in fish culture effluent. This study aims to characterize the efficacy of various phosphorus sorption media and assess their potential use in phosphorus reduction at Cedar Crest Fish Farms. The outcomes of this research will ensure Cedar Crest's long-term economic viability and market competitiveness, while simultaneously benefitting land-based aquaculture operations throughout Ontario and Canada by addressing a significant challenge to the sustainable growth of the industry.