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3 AOP法应用
表3列举了国外高度氧化法的应用研究实例。
表3 高度氧化法的应用研究实例[1，13～16]
|
AOPs |
处理对象 |
处理效果 |
|
O3/UV |
制药废水 |
COD 680→400mg/L AOX 3→1 mg/L |
|
DBS |
TOC 20.5→2.0mg/L | |
|
苯酚 |
TOC 28.1→1.8mg/L | |
|
乙烯醇 |
TOC 18.0→1.5mg/L | |
|
阳离子交换树脂洗涤水 |
TOC 15.2→0.6 mg/L | |
|
阳离子交换树脂洗涤水 |
TOC 21.6→0.6mg/L | |
|
阿特拉津 |
30min 10→1mg/L | |
|
H2O2/O3 |
氯苯类 |
40→20.5μg/L |
|
二恶英 |
6500→3000pg/L | |
|
阿特拉津 |
10min内去除91% | |
|
ZrO2/Fe3+/ UV/H2O2 |
PVA |
TOC去除率95.6% |
|
聚乙烯醇 |
TOC去除率61.3% | |
|
腐殖酸 |
TOC去除率84.3% | |
|
LAS |
TOC去除率72.6% | |
|
石油贮槽清洗水 |
TOC去除率93.2% | |
|
固体废物填埋渗透水 |
TOC去除率40.6% | |
|
UV/TiO2 |
纤维工业废液 |
20～30min分解成CO2 |
|
UV/H2O2/O3 |
BOD=0的废水 |
处理60min BOD/COD 0→0.4 |
|
H2O2/O3 |
氯丁烷 |
分解率93% |
|
UV/TiO2 |
偶氮染料 Rema201, BlackB |
偶氮染料300→0 μm TOC 2633→7 μm |
近年来，AOP法在一定范围内已投入应用。美国密西根州从1994年开始将该法用于处理受有机氯化物污染的地下水， Mont-Valerien水处理厂就采用O3/UV来氧化处理来自Seine River原水中所含的阿特拉津，在南加州建造了世界上最大的H2O2/O3法净水设施，已于2000年正式运行。在法国已经将O3/H2O2过程同活性炭过滤结合，应用于水处理厂中。英国、荷兰等国为了去除和分解水中的农药，准备在普通净水厂中增加H2O2/O3法净水设施；德国、澳大利亚、法国和荷兰已采用O3/UV和H2O2/O3法来处理垃圾填埋渗透废水[1～4]。
4 结语
AOP法虽有其独特的优点，但目前处理成本较高，对含大量自由基清除剂(Scavenger)，如碳酸根离子和重金属离子的废水氧化效果差。废水中有悬浮颗粒物存在时，必须预先去除，否则也会影响氧化效果。这些问题均有待深入研究解决。
5 参考文献
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作者孙贤波，男，1973年生，1999年毕业于复旦大学环境与工程系硕士、助教。上海市科委资助项目，编号002312029。
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