A balanced approach to nutrient management and water reuse for the livestock industry

该研究旨在为畜牧业开发新的废物管理和水再利用工艺，以帮助控制污染，提高营养物质的利用和水的再利用。这种方法将有助于最大限度地减少环境恶化，防止生态系统健康退化，同时寻求从乳制品废物中回收营养物质，并重新利用处理过的废水。将开发一种创新的新的废水处理工艺，它将寻求保存营养物质，如氮、磷和钾，而不是去除它们。粪肥管理系统中的营养物质保存，以及随后从流出物中提取营养物质作为肥料再利用，将对动物粪肥管理方案产生重大影响。工艺废水中的氮、磷和钾将通过UBC开发的新结晶工艺作为鸟粪石回收，鸟粪石是一种有价值的缓释肥料。在实验工作的第一阶段，将开发和测试一种使用实验室规模的测序批式反应器的新型生物工艺。除了生物工艺外，还将研究一种创新的微波强化高级氧化工艺，以确定其处理和释放生牛粪中的营养物质的适用性。在实验室测试完成后，将在UBC乳制品教育和研究中心设计并建造一个紧凑的废水处理设施。在这项工作中开发的技术将在乳制品研究中心的中试规模研究中进行全面测试和评估。预计在这项研究中开发的技术将对畜牧业的经济和环境可持续性产生实质性的积极影响。在这些研究过程中开发的知识和技术也应该对加拿大的工程公司有直接的应用和好处。它还具有在卑诗省以及加拿大其他地方发展新的动物废物管理第二产业的潜力。该项目还将为研究生和本科生的培训提供独特的机会。

The research proposed aims to develop new waste management and water reuse processes for the livestock industry to help control pollution and enhance nutrients utilization ans water reuse. Such an approach will help minimize environmental deterioration and prevent ecosystem health degradation at the same time as it seeks to recovery nutrients from dairy wastes and reuse of the treated wastewater effluent. An innovative new wastewater treatment process train will be developed, which will seek to conserve nutrients, such as nitrogen, phosphorus and potassium, rather than remove them. Nutrients conservation in manure management systems, and their subsequent extraction from the effluent for reuse as fertilizer will have a major impact on the schemes of animal manure management. Nitrogen, phosphorus and potassium in process wastewaters will be recovered as struvite, a valuable, slow-release, fertilizer via a new crystallization process developed at UBC. A novel biological process using lab-scale sequencing batch reactors will be developed and tested during the first phase of experimental work. In addition to the biological process, an innovative microwave enhanced, advanced oxidation process will be examined for its suitability for treating and releasing nutrients from raw dairy manure. Upon the completion of the laboratory testing, a compact wastewater treatment facility will be designed, constructed at the UBC Dairy Education and Research Centre. The technology developed in this work will be fully tested and evaluated in pilot-scale studies at the dairy research centre. It is anticipated that the technologies developed during this research will have substantial positive impacts on both the economic and environmental sustainability of the livestock industry. The knowledge and technology developed during the course of these studies should also have immediate applications and benefits to Canadian engineering companies. It also has the potential to develop new secondary industry for animal waste management in B.C., as well as elsewhere in Canada. This project will also offer unique opportunities for the training of both graduate and undergraduate students.