传统氧化沟工艺城镇污水厂全流程微塑料去除率变化特征 |
摘要点击 777 全文点击 94 投稿时间:2024-05-17 修订日期:2024-07-21 |
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中文关键词 城镇污水处理 氧化沟 微塑料(MPs) 去除率 赋存特征 |
英文关键词 urban sewage treatment oxidation ditch microplastics(MPs) removal rate occurrence characteristics |
作者 | 单位 | E-mail | 魏静凯 | 河北工程大学能源与环境工程学院, 邯郸 056038 河北省水污染控制与水生态修复技术创新中心, 邯郸 056038 | wjk3149@163.com | 王伟 | 河北金融学院, 保定 071051 | | 孟鑫 | 河北工程大学能源与环境工程学院, 邯郸 056038 河北省水污染控制与水生态修复技术创新中心, 邯郸 056038 中国科学院生态环境研究中心环境水质学国家重点实验室, 北京 100085 | xinmeng@rcees.ac.cn | 齐杰 | 河北工程大学能源与环境工程学院, 邯郸 056038 河北省水污染控制与水生态修复技术创新中心, 邯郸 056038 | | 王兵帅 | 河北工程大学能源与环境工程学院, 邯郸 056038 河北省水污染控制与水生态修复技术创新中心, 邯郸 056038 | | 孙广垠 | 河北工程大学能源与环境工程学院, 邯郸 056038 河北省水污染控制与水生态修复技术创新中心, 邯郸 056038 | |
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中文摘要 |
城市污水处理厂(WWTPs)被认为是微塑料进入自然水体的主要来源,且在发展中国家对于微塑料的研究仍处于初级阶段. 以中国典型北方城市邯郸为对象,对该市一污水处理厂一期工程和扩建工程中全流程微塑料形状和粒径的去除率变化特征进行相关研究. 结果表明:①污水处理厂进水中形状上以纤维状微塑料为主,粒径上以小于0.5 mm的微塑料为主;②各级处理中,二级处理对微塑料的去除起关键作用;③夏季一期工程和扩建工程的去除率分别达到90.20%和84.75%,冬季一期工程和扩建工程去除率分别达到93.75%和82.50%. 尽管有如此高的去除效率,但由于庞大的日处理能力,仍有大量微塑料排放到最终水域. 研究旨在为污水处理厂提升微塑料去除率的运行管理提供理论指导. |
英文摘要 |
Wastewater treatment plants (WWTPs) are considered to be the major source of microplastics entering natural water bodies, and research on microplastics in developing countries is still in its infancy. Taking Handan, a typical city in northern China, as the object, the characteristics of the removal rate of microplastics in the whole process of the first phase of a sewage treatment plant and the expansion project were studied. The results showed that: ① The shape of the wastewater microplastics was mainly fibrous microplastics, and the size of the wastewater microplastics was less than 0.5 mm. ② Among all levels of treatment, secondary treatment played a key role in the removal of microplastics. ③ The total removal rate of the first phase project and the expansion project in summer reached 90.20% and 84.75%, and the total removal rate in winter reached 93.75% and 82.50%, respectively. Despite such high removal efficiency, large amounts of microplastics were discharged into the final waters due to the large daily processing capacity. The purpose of this study is to provide theoretical guidance for the operation management of wastewater treatment plants to improve the removal rate of microplastics. |