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1、第38卷第9期同济大学学报(自然科学版)Vol.38No.92010年9月JOURNALOFTONGJIUNIVERSITY(NATURALSCIENCE)Sep.2010文章编号:0253374X(2010)09130905DOI:10.3969/j.issn.0253374x.2010.09.010饮用水臭氧生物活性炭净化效果与传统工艺比较黎雷,高乃云,张可佳,徐飞飞(同济大学污染控制与资源化研究国家重点实验室,上海200092)++摘要:高浓度有机物,高NH4N的黄浦江原水经预臭氧∀materialandNH4Ninw
2、ater.Theremovalefficienciesof+高密度澄清池∀砂滤∀后臭氧∀生物活性炭组合处理工艺CODMnandNH4NbythepostozonationBACprocesswereup后,水质明显优于传统处理工艺.其中臭氧生物活性炭部分to30.4%and18.9%respectively.Andasthepreozonation对CODMn(高锰酸盐指数)和NH+4N的去除率分别达到processplayedabetterrolethanprechlorinationprocessinaidcoagulati
3、on,theremovalefficienciesofCOD+30.4%和18.9%.由于预臭氧相对预氯化能更好地发挥其氧MnandNH4化助凝作用,组合工艺中常规工艺部分对COD+Nwereupto29.6%and81%respectivelyintraditionalpartMn和NH4Nofcombinationprocess.However,theremovalefficienciesof的去除率分别达29.6%和81.0%,而传统工艺对CODMn和++CODMnandNH4Nwereonly22.3%and61.5%inth
4、eNH4N的去除率仅分别为22.3%和61.5%.考察了2种工conventionalprocess.Inaddition,theconcentrationsofalgae艺出水藻毒素,溴酸盐浓度、三卤甲烷生成潜能以及相对分toxins,trihalomethanes,bromate,molecularweight子质量分布等指标,表明组合处理工艺更容易去除小分子有distributionandtherelatedparametersoftheBACeffluent机物(臭氧生物活性炭部分对小于<1kD的有机物去除率大werealsoin
5、vestigated.Theresultsshowthattheorganic于70%),三卤甲烷生成潜能比传统工艺降低41%,且藻毒materialwithlowmolecularweightcanbemoreeasily素和溴酸盐指标均低于我国饮用水标准.由于组合处理工艺removedbythepostozonationBACprocesses(removal+能基本去除NH4N,可以采用自由氯消毒用以解决传统氯efficiencyoforganicmaterialwithmolecularweightlessthan胺消毒带来的亚
6、硝胺等消毒副产物风险和氯胺的气味问题.1kDismorethan70%).Tihalomethanesformationpotential在高温季节组合工艺澄清池中出现藻类大量生长的现象,可is41%lessthanthatoftheconventionalprocess.Besides,the能与臭氧持续消毒时间较短有关,可通过联合预臭氧和预氯microcystinandbromateconcentrationsarelowerthan化工艺对组合处理工艺中预处理方式进行改造.drinkingwaterstandardsinChina.M
7、oreover,thefreechlorinedisinfectioncanbeusedbecausetheNH++4Ncanbe关键词:臭氧;生物活性炭;NH4N;有机物mostlyremovedbythecombinationprocess,whichcanavoid中图分类号:X703.1文献标识码:Athegenerationofnitrosamineaswellastheodorandtestproblembychloraminedisinfection.However,thecombinationComparisonofO
8、3BACCombinationandprocessalsohassomedisadvantagessuchasthegrowthofConventionalProcesseso
