| ABSTRACT | 第1-12页 |
| 摘要 | 第12-15页 |
| R(?)SUME (?) | 第15-19页 |
| 1 Literature review | 第19-50页 |
| ·Research background and significance | 第19-24页 |
| ·Overview of groundwater pollution | 第19-20页 |
| ·Sources and harmfulness of heavy metals and chlorinated organic compounds in water | 第20-24页 |
| ·The treatment technology of Cr(Ⅵ) and chlorine-containing organic compounds in water | 第24-30页 |
| ·The treatment technology of Cr(Ⅵ) | 第24-29页 |
| ·Treatment of chlorinated organic compounds | 第29-30页 |
| ·Development and limitations of the metallic reducing-remediation technology | 第30-39页 |
| ·The existence and nature of humic acid | 第33-35页 |
| ·Impact of Humic Acid on the dechlorination by zero-valent iron | 第35-38页 |
| ·Impacts of HA on Cr(Ⅵ) removal by zero-valent iron | 第38-39页 |
| ·Improvement of metallic reducing-remediation technology | 第39-47页 |
| ·History of CMC development | 第39-40页 |
| ·Structure and charactersitics of CMC | 第40-42页 |
| ·The Progress of the CMC Applications | 第42-44页 |
| ·The application of CMC in the Preparation of nanoscale Fe~0 | 第44-46页 |
| ·Existence of Magnetite, Characteristics and applications | 第46-47页 |
| ·Choice of the present Topic | 第47-49页 |
| ·Conclusion of this chapter | 第49-50页 |
| 2 Experimental part | 第50-57页 |
| ·Principles of the Experiments | 第50-51页 |
| ·The mechanism of the removal of Cr(Ⅵ) by zerc-valent iron in wastewater water | 第50页 |
| ·Analysis of the mechanism of the catalytic reduction of 2,4-DCP by the bi-metallic | 第50-51页 |
| ·Main reagents and equipments of the experiment | 第51-53页 |
| ·Main experimental equipments | 第51-52页 |
| ·Main Experimental reagents | 第52-53页 |
| ·Experimental methods and devices | 第53-56页 |
| ·Preparation methods | 第53-55页 |
| ·The preparation of HA reserve Solution | 第55页 |
| ·Equipments of the batch reaction | 第55-56页 |
| ·Methods of Analysis | 第56页 |
| ·Characterization of iron filings and nanoscale Fe~0 particles | 第56页 |
| ·Conclusion of this chapter | 第56-57页 |
| 3 Impacts of humic acid on the removal of 2,4-DCP by nanoscale Pd/Fe and Ni/Fe | 第57-72页 |
| ·Impacts of Humic acid on the removal of 2,4-DCP by nanoscale Ni/Fe in water | 第57-61页 |
| ·The inhibition of HA to reductive dechlorination of nanoscale Ni-Fe | 第58-60页 |
| ·Impacts of HA dosage on the catalytic reductive-dechlorination by nanoscale Ni-Fe | 第60-61页 |
| ·Impacts of HA on the removal of 2,4-DCP by nanoscale Pd-Fe | 第61-70页 |
| ·Inhibition of nanoscale Pd-Fe catalytic reductive-dechlorination by HA | 第62-63页 |
| ·Impacts of HA dosage on the catalytic reductive-dechlorination by nanoscale Pd-Fe | 第63-65页 |
| ·Effects of Pd content on 2,4-DCP dechlorination in the presence of humic acid | 第65-68页 |
| ·Effects of NO_3~- on 2,4-DCP dechlorination in the presence of humic acid | 第68-70页 |
| ·Conclusion of this Chapter | 第70-72页 |
| 4 Impacts of HA on the removal of the Cr(Ⅵ) by nanoscale Fe~0 | 第72-86页 |
| ·Impacts of HA on the removal of Cr(Ⅵ) by nanoscale Fe~0 | 第72-74页 |
| ·Effect of the initial Fe~0 concentrations removal of Cr(Ⅵ) | 第74-75页 |
| ·Effect of the initial pH values on the removal of Cr(Ⅵ) | 第75-77页 |
| ·Effects of Cr(Ⅵ) concentrations removal of Cr(Ⅵ) | 第77页 |
| ·Effect of the reaction temperatures on the removal of Cr(Ⅵ) | 第77-79页 |
| ·Comparison of Fe~0 type | 第79-80页 |
| ·Reduction mechanism of Cr(Ⅵ) | 第80-82页 |
| ·Impacts of p-benzoquinone on the reduction of Cr(Ⅵ) by nanoscale Fe~0 | 第82-84页 |
| ·Conclusion | 第84-86页 |
| 5 Study of the coating mechanism on the agglomeration of nanoscale particles and HA on thesurface area of nanoscale Fe~0 | 第86-91页 |
| ·The agglomeration of nanoscale particles | 第86-89页 |
| ·Behavior of the agglomeration of nanoscale Fe~0 particles at micro-level | 第86-87页 |
| ·Behavior of the agglomeration of nanoNi-Fe at micro-level | 第87-89页 |
| ·Coating mechanism of HA on the surface area of nanoscale Fe~0 | 第89-90页 |
| ·Conclusion | 第90-91页 |
| 6 Studies on the preparation, anti-inhibition effects of CMC and pollutants removal | 第91-100页 |
| ·Study on the preparation of CMC-Fe and pollutants removal | 第91-93页 |
| ·The preparation of stable nanoscale Fe~0 by CMC | 第91-92页 |
| ·Impacts of CMC dosage on the removal efficiency by nanoscale Fe~0 | 第92-93页 |
| ·Study on the anti-inhibitory effects of CMC on the inhibition by HA | 第93-97页 |
| ·Effects of different concentrations of CMC on the elimination of the inhibition by HA | 第94-95页 |
| ·Effects of CMC on the elimination of HA inhibition | 第95-96页 |
| ·The analysis of the mechanism of the HA anti-inhibition by CMC | 第96-97页 |
| ·Conclusion | 第97-100页 |
| 7 Studies on the preparation, anti-inhibition effects of Fe_3O_4-nanoscale Fe~0 and pollutantsremoval | 第100-111页 |
| ·Study of the preparation of Fe_3O_4-nanoscale Fe~0 and the pollutants removal | 第100-105页 |
| ·The preparation of Fe_3O_4-nanoscale Fe~0 | 第100-101页 |
| ·Comparison of chromium removal results by different systems | 第101-102页 |
| ·Impacts of magnetite dosage on the nano-Fe~0 reactivity | 第102-103页 |
| ·Impacts of the initial pH value | 第103-104页 |
| ·Impacts of the temperature | 第104-105页 |
| ·Study on the anti-inhibitory effects of Fe_3O_4 on the inhibition by HA | 第105-109页 |
| ·Effects of different dosages of Fe_3O_4 on the elimination of HA inhibition | 第105-107页 |
| ·Fe_3O_4 versus the elimination of the HA inhibition | 第107-108页 |
| ·The analysis of the mechanism of the HA anti-inhibition by Fe_3O_4 | 第108-109页 |
| ·Conclusion | 第109-111页 |
| 8 Conclusion and prospects | 第111-116页 |
| ·Conclusion | 第111-114页 |
| ·Innovation points | 第114页 |
| ·Prospects | 第114-116页 |
| References | 第116-126页 |
| Presentation of the Candidate | 第126-127页 |
| Acknowledgments | 第127-128页 |
