摘要
针对南方某地区含氨氮的微污染原水,采用聚氨酯泡沫悬浮填料生物预处理与纳米氧化石墨烯改性沸石等3种滤料联合工艺(简称工艺1、工艺2、工艺3)进行强化处理效果实验研究。结果表明,优化工况条件为:工艺1和工艺2,填料体积填充率10%,COD_(Mn)/ρ(TN)=1:1,气水体积比0.5:1,滤速6 m/h;工艺3,填料体积填充率10%,COD_(Mn)/ρ(TN)=2:1,气水体积比0.75:1,滤速6 m/h。在优化运行条件下,3种工艺的强化处理效果,NH_4^+-N的去除率分别为86.6%、94.2%和94.4%,TN的去除率分别为18.6%、21.8%和31.4%,COD_(Mn)的去除率分别为81.4%、83.2%和85.1%。纳米氧化石墨烯改性沸石表面含有大量活性官能团,比表面积大,表面生物量是其它2种滤料的1.3~1.8倍,工艺3更易实现同步硝化反硝化。
Aimed at the N4＋-N containing micro-polluted raw water in some southern region, the enhanced treatment efficiency by the experiment of polyurethane foam filler biological pretreatment combined with nano graphene oxide modified zeolite （N-GOMZ） and other three kinds of filter materials （Technology. 1, Technology.2, Technology.3 for short respectively） were studied. The results showed that, the optimum operation conditions were as follow, for Technology. 1 and Technology.2, the volume filling rate of fillers, CODMn/ρ（TN）, air to water volume ratio and filtering velocity was 10%, 1：1, 0.5：1 and 6 m/h respectively; for Technology.3, the volume filling rate of fillers, CODMn/ρ（TN）, air to water volume ratio and filtering velocity was 10%, 2：1, 0.75：1 and 6 m/h respectively. The removal rate of NH4＋-N by three combined technology was 86.6%, 94.2% and 94.4% respectively under optimum operation conditions, and the TN removal rate was 18.6%, 21.8% and 31.4% respectively and CODMn removal rate was 81.4%, 83.2% and 85.1% respectively. The N-GOMZ had a large specific surface area and been covered with a large amount of active functional groups on its surface, the surface biomass on the N-GOMZ was 1.3-1.8 times of that of the other two filter materials, so the Technology.3 was more likely to achieve simultaneous nitrification and denitrification （SND） than the other two combined technology.
作者
李冬梅
黄俊
吴翠如
梁金玲
黄明珠
王子熙
LI Dongmei;HUANG Jun;WU Cuiru;LIANG Jinling;HUANG Mingzhu;WANG Zixi(Faculty of Civil and Transportation Engineering Construction,Guangdong University of Technology,Guangzhou 510006,China;The Ethel Walker School,Simsbury United States,06070)
出处
《水处理技术》
CAS
CSCD
北大核心
2018年第9期124-128,131,共6页
Technology of Water Treatment
基金
国家自然科学基金(51378129
51108094)
广东省自然科学基金(2017A030313321
2015A030313494)
广东省高教厅-普通高校特色创新类项目(2016KTSCX035)
