滩涂非正规垃圾填埋场污染物垂向扩散规律研究  

Research on the vertical diffusion rules of pollutants in tidal informal landfills

作　　者：徐斌 蔡玲 付高平 张蔚 XU Bin;CAI Ling;FU Gaoping;ZHANG Wei(Zhejiang Environmental Technology Co.,Ltd.,Hangzhou Zhejiang 310013)

机构地区：[1]浙江省环境科技有限公司,浙江杭州310013

出　　处：《环境污染与防治》2025年第2期78-81,共4页Environmental Pollution & Control

基　　金：浙江省生态环境科研和成果推广项目(No.2021HT0054)。

摘　　要：由于历史原因,受限于当时处置能力,大量垃圾被露天倾倒或简易填埋,加之防渗措施不足,对土壤和地下水造成了潜在危害,特别是在沿海地区,因工业产业起步早使得沿海工业园区内滩涂非正规垃圾填埋场遗留问题突出。选取了浙江省沿海两个典型滩涂非正规垃圾填埋场为研究对象,通过对地下水和土壤分层采样检测,分析了污染物垂向扩散规律,并进行模拟和预测。结果表明,填埋场A地下水耗氧量和氨氮污染主要集中在2.5~4.0 m段,填埋场B土壤污染随着深度增加逐步降低。采用HYDRUS-1D软件模拟填埋层以下污染物的垂向迁移特征发现,滩涂区土层结构紧密,渗透性低,是限制污染物下渗的主要原因。Throughout the history,due to limited disposal and impermeable capacity,a large amount of waste was disposed in an uncontrolled manner,either by open dumping or by simple landfill,leading to potential hazard to soil and groundwater.Especially in coastal areas,early industrialization have made the soil and groundwater pollution extraordinary in coastal industrial parks with tidal informal landfills.In this study,two typical tidal informal landfills were selected in Zhejiang,and underground water and soil were sampled in different layers to analyze the soil and groundwater pollution vertical diffusion.And the rules were simulated and predicted.Results showed that oxygen consumption and ammonia nitrogen of underground water in landfill A were polluted mainly at depth of 2.5-4.0 m,and the pollution of soil in landfill B decreased with depth.The vertical diffusion characteristics of pollutants below the landfill were simulated by the HYDRUS-1D software,and it was found that the tidal area had dense soil layers and poor permeability,thus limiting the downward infiltration of pollutants.

关 键 词：非正规垃圾填埋场 污染扩散 土壤污染 地下水污染 污染物模拟与预测 

分 类 号：X70[环境科学与工程—环境工程]