地下水修复详解
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Groundwater remediation 地下水修复
Contents
1
Introduction
2
Physical Remediation
3 Chemical Remediation
4
Bioremediation
5
Combined remediat来自on6Discussion and Summary
Section header
Advantages and influencing factors
Section header
Section header
simple equipment
easy to operate
Short treatment time and high speed（1-3years）
• Being used to remove the heavy metals • suEcRhias saAn resnevniirco(砷nm）en、t-fcraiednmdiluyman（d镉）、 c（hhr铅iogmh）liy.uemff（ici铬en）t i、n-smituertceucrhyn（iq汞ue）、lead •Tthhaetrmemakoevaulseeffoifcieelnecctyr：ok8i0n%esi～s t9o5%.
Section header
Air sparging (AS) is an innovative groundwater remediation technology which has been firstly used in Germany in the middle 1980s to remove volatile organic compounds( VOCs). (挥发性有机物）
1.Introduction
Classification of groundwater remediation technology
❖ Physical method ❖ Chemical method ❖ Biological method（Bioremediation） ❖ Combined remediation technology
1. Introduction
Reasons for Groundwater pollution
❖Industrial waste water discharged
❖Contaminated surface water invades underground aquifer
❖ polluted water
1.Introduction
Components in the polluted groundwater
• Phenol（酚） • chromium（铬） • mercury（汞） • arsenic（砷） • radioactive substances（放射性物质） • bacteria and organic matters
Small investment
Advantages
Section header
Section header
Hydro geological characteristics of groundwater Aeration operating characteristics aeration patterns Components and nature of pollutants
Physical remediation
(物理修复技术)
Air Sparging (AS)(曝气修复技术）
1
2
Electrokinetic Remediation(ER)(电动修复技术）
Air Sparging，AS (曝气修复技术）
Definition
Section header
Section header
Because of its properties of in-situ, efficiency and economy , AS has becoming an important technology to remediate organic pollution.
Section header
AS system
As the air rise to the surface, dissolved and nonaquousphase organic chemicals volatilize into the air and are removed from the groundwater. （挥发、迁移扩散、生物降解）
Models:
➢Lumped parameter models （集中参数模型） ➢multiphase fluid flow models （分布式多相流流动模型）
Electrokinetic Remediation
（电动修复）
Section header
Section header
Section header
Research Situations
Section header
Section header
Section header
resear ch
Section header
Key technique research: Three approaches are employed in the existing models to predict the fates of VOCs in the gas and liquid phases during air sparging of groundwater in the saturate zone. (AS 多相流动过程中气液流动以及污染物传质过程的 模型研究是AS 技术的关键因素)
Definition
System
Section header
Section header
Two Processes: Aeration曝气 : Air is injected into the saturated zone below or near a contaminant plume. Mass transfer 传质 :
Contents
1
Introduction
2
Physical Remediation
3 Chemical Remediation
4
Bioremediation
5
Combined remediat来自on6Discussion and Summary
Section header
Advantages and influencing factors
Section header
Section header
simple equipment
easy to operate
Short treatment time and high speed（1-3years）
• Being used to remove the heavy metals • suEcRhias saAn resnevniirco(砷nm）en、t-fcraiednmdiluyman（d镉）、 c（hhr铅iogmh）liy.uemff（ici铬en）t i、n-smituertceucrhyn（iq汞ue）、lead •Tthhaetrmemakoevaulseeffoifcieelnecctyr：ok8i0n%esi～s t9o5%.
Section header
Air sparging (AS) is an innovative groundwater remediation technology which has been firstly used in Germany in the middle 1980s to remove volatile organic compounds( VOCs). (挥发性有机物）
1.Introduction
Classification of groundwater remediation technology
❖ Physical method ❖ Chemical method ❖ Biological method（Bioremediation） ❖ Combined remediation technology
1. Introduction
Reasons for Groundwater pollution
❖Industrial waste water discharged
❖Contaminated surface water invades underground aquifer
❖ polluted water
1.Introduction
Components in the polluted groundwater
• Phenol（酚） • chromium（铬） • mercury（汞） • arsenic（砷） • radioactive substances（放射性物质） • bacteria and organic matters
Small investment
Advantages
Section header
Section header
Hydro geological characteristics of groundwater Aeration operating characteristics aeration patterns Components and nature of pollutants
Physical remediation
(物理修复技术)
Air Sparging (AS)(曝气修复技术）
1
2
Electrokinetic Remediation(ER)(电动修复技术）
Air Sparging，AS (曝气修复技术）
Definition
Section header
Section header
Because of its properties of in-situ, efficiency and economy , AS has becoming an important technology to remediate organic pollution.
Section header
AS system
As the air rise to the surface, dissolved and nonaquousphase organic chemicals volatilize into the air and are removed from the groundwater. （挥发、迁移扩散、生物降解）
Models:
➢Lumped parameter models （集中参数模型） ➢multiphase fluid flow models （分布式多相流流动模型）
Electrokinetic Remediation
（电动修复）
Section header
Section header
Section header
Research Situations
Section header
Section header
Section header
resear ch
Section header
Key technique research: Three approaches are employed in the existing models to predict the fates of VOCs in the gas and liquid phases during air sparging of groundwater in the saturate zone. (AS 多相流动过程中气液流动以及污染物传质过程的 模型研究是AS 技术的关键因素)
Definition
System
Section header
Section header
Two Processes: Aeration曝气 : Air is injected into the saturated zone below or near a contaminant plume. Mass transfer 传质 :