School of Environmental Science and Engineering, Tianjin University, Tianjin, 300350, China; Center for Green Buildings and Sponge Cities, Georgia Tech Tianjin University Shenzhen Institute, Shenzhen, Guangdong, 518071, China.
Institute of Blue and Green Development, Shandong University, Weihai, 264209, China; College of Management and Economics, Tianjin University, Tianjin, 300072, China.
Chemosphere. 2022 Feb;288(Pt 2):132483. doi: 10.1016/j.chemosphere.2021.132483. Epub 2021 Oct 5.
Globally, 80% of wastewater, among which 28% came from industry, returned to the ecosystem without treatment or reuse. The discharge of industrial wastewater poses public health and environmental concerns. The necessity and urgency of industrial wastewater treatment (IWT) will bring great challenges to most countries. This paper conducted the patent analysis combined with text mining to quantitatively analyze 11,840 patents related to IWT in the Derwent Innovations Index database. The results showed that: From 1973 to 2020, the number of patents related to IWT annually was increasing consistently. China ranked first in the number of patent publications. In contrast, the United States and some patent organizations, such as World Intellectual Property Organization, produced fewer patents, while they played more important roles in knowledge transfer. The core technology analysis suggested that method, device, material and related industry were hot topics. From activated sludge treatment technology, industrial wastewater treatment technology had gone through a development process from single technology treatment to combined technologies treatment. In the foreseeable future, research on devices for physical treatment, advanced oxidation processes, automated and energy-saving treatment systems were the promising directions.
全球范围内，80%的污水未经处理或再利用就返回了生态系统，其中 28%来自工业。工业废水的排放引发了公众健康和环境方面的担忧。工业废水处理（IWT）的必要性和紧迫性将给大多数国家带来巨大挑战。本文结合文本挖掘对德温特创新索引数据库中与 IWT 相关的 11840 项专利进行了专利分析，以定量分析。结果表明：从 1973 年到 2020 年，每年与 IWT 相关的专利数量持续增长。中国在专利出版物数量方面排名第一。相比之下，美国和世界知识产权组织等一些专利机构的专利数量较少，但在知识转移方面发挥了更重要的作用。核心技术分析表明，方法、设备、材料和相关产业是热点话题。从活性污泥处理技术开始，工业废水处理技术已经经历了从单一技术处理到组合技术处理的发展过程。在可预见的未来，对物理处理设备、高级氧化工艺、自动化和节能处理系统的研究将是有前途的方向。
