化学工厂附近水环境质量时空变化特征提取研究

Study on Temporal and Spatial Variation Characteristics of Water Environment Quality around Chemical Plants

现代化工园区的健康、有序发展将越来越重视环境和生态问题。探究化学工厂附近水环境质量时空变化特征规律,为利用和保护水资源、改善水环境质量提供一定参考。选取pH、高锰酸盐指数、化学需氧量、生化需氧量、氨氮、总氮和总磷等7种水质指标分析某化工园区附近水环境质量的时空变化特征,包括年度指标变化特征、月度指标变化特征和空间分布特征。结果表明,某化工园区附近水质指标较往年有大幅改善,五处水质监测点指标月度变化特征总体相似,局部时段略有差异;靠近化工园区的综合水质指标较差,远离化工园区且经技术措施改善后的指标较好。

The healthy and orderly development of modern chemical parks will pay more and more attention to environmental and ecological issues.Exploring the temporal and spatial variation characteristics of water environment quality near chemical plants provides a reference for utilizing and protecting water resources and improving water environment quality.In this paper,seven water quality indicators including pH,permanganate index,chemical oxygen demand,biochemical oxygen demand,ammonia nitrogen,total nitrogen and total phosphorus were used to analyze the temporal and spatial variation characteristics of water environment quality near a chemical park,including the characteristics of annual indicators,monthly indicator change characteristics and spatial distribution characteristics.The results show that the water quality index near a chemical park has been greatly improved compared with previous years.The monthly changes of the five water quality-monitoring points are generally similar,with slight differences in local time periods.The water quality indicators near the chemical park are poor,far from the chemical park and improved by technical measures.The latter indicator is better.