Groundwater pollution monitoring natural attenuation restoration prediction method, system and device

Abstract

The invention provides a groundwater pollution monitoring natural attenuation restoration prediction method, system and device. The system comprises a standard building module which is used for building an MNA conceptual model of a polluted site, and determining a monitoring target and an MNA control standard of the polluted site, an on-site monitoring network which is used for determining a monitoring position, a monitoring object, a monitoring index and a monitoring frequency based on the conceptual model so as to realize on-site monitoring of the polluted site; and an evaluation module which is used for evaluating the feasibility of the MNA repair technology through an indoor simulation test and on-site monitoring; if the MNA repair technology is not feasible, natural attenuation is strengthened, and if the MNA repair technology is feasible, a final MNA effectiveness evaluation result is outputted. According to the method, system and device, effective prediction for groundwater pollution monitoring natural attenuation restoration is achieved, the method, system and device are easy to execute, achieve medium-and-long-term accurate prediction, and greatly reduce the time cost of evaluation.

Description

technical field [0001] 本发明属于环境修复领域,尤其涉及一种地下水污染监测自然衰减修复预测方法、系统及装置。 Background technique [0002] 监测自然衰减技术(Monitored natural attenuation,MNA)是指通过实施有计划的监控策略,依据污染场地自然发生的物理、化学及生物等自然衰减作用,使得土壤和地下水中污染物的浓度、总量、毒性和迁移性等在合理的时间范围内降低到风险可接受水平的一种修复方法。与其他“主动”修复技术(物理、化学或生物修复)相比,由于监测自然衰减具有对地下环境干扰性小、修复费用相对较低等优势,被广泛采用,尤其是地下水污染修复。 [0003] 污染物在地下水中自然衰减过程包括:①地下水污染物的溶质物理迁移过程;②地下水污染物的物理化学作用转化过程;③微生物降解作用的转化过程。MNA需开展长期的自然衰减效果跟踪监测,以确保污染物的自然衰减效果与预测一致。过程中,可证实MNA技术可行性及有效性的评估依据包括:(1)污染物质量的减少;(2)表征微生物降解的地球化学指标(电子受体供体、特征产物、碱度等)的变化;(3)微生物降解菌群的变化。这3个方面可以单独或联合为污染物的自然衰减提供直接或有力的证据,目前主要通过污染物质量计算、地球化学指标分析、稳定同位素分析、微生物分子技术等方法手段来获取证据,但上述手段均是基于现状数据做出的趋势分析,而缺少长远修复效果的科学预测,因此进行数值模拟对于指导开展MNA至关重要。 [0004] 目前,在环境修复领域中,通常只是根据测得的某些重点指标来对水污染状况进行研判,并未形成有效的水环境修复监测方法。 Contents of the invention [0005] 有鉴于此,本发明具体提供了如下技术方案: [0006] 一方面,本发明提供了一种地下水污染监测自然衰减修复预测方法,所述方法包括: [0007] S1、建立污染场地的MNA概念模型,确定污染场地的监测目标和MNA控制标准; [0008] S2、基于所述概念模型,构建现场监测网络,进行污染场地的现场监测;该监测网络的建立,至少要确定污染场地实地监测中的监测位置、监测对象、监测指标、监测频率等,以便于后续实测数据的采集,以及基于采集数据的趋...

AI Technical Summary

Problems solved by technology

These three aspects can provide direct or strong evidence for the natural attenuation of pollutants alone or in combination. At present, the evidence is mainly obtained through methods such as pollutant mass calculation, geochemical index analysis, stable isotope analysis, and microbial molecular technology. However, the above The means are all trend analysis based on current data, but lack of scientific prediction of long-term repair effect, so numerical simulation is very important to guide the development of MNA

[0004] At present, in the field of environmental remediation, water pollution status is usually judged based on some key indicators measured, and no effective monitoring method for water environment remediation has been formed.

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