首页 | 本学科首页   官方微博 | 高级检索  
     检索      

复合填料地下渗滤系统的强化脱氮研究
引用本文:严群,吴一蘩,杨健,董卫华.复合填料地下渗滤系统的强化脱氮研究[J].同济大学学报(自然科学版),2010,38(5):697-703.
作者姓名:严群  吴一蘩  杨健  董卫华
作者单位:1. 同济大学,环境科学与工程学院,上海,200092;江西理工大学,建筑与测绘工程学院,江西,赣州,341000
2. 同济大学,环境科学与工程学院,上海,200092
3. 杭州市市政设施监管中心,浙江,杭州,310003
基金项目:国家重大水专项资助项目,上海市科委资助项目 
摘    要:为有效提高地下渗滤系统的运行水力负荷并强化其脱氮效果,建立了由55%煤渣、25%土壤与20%草炭全混合装填的地下渗滤装置,运行水力负荷为10cm·d-1,每天进水4次,通过改变不同运行条件来促进TN的去除.研究结果表明该装置对COD,NH4+-N,TN的平均去除率,在正常出水水位条件下运行,分别为73.4%,98.2%和20.1%;在提高出水水位条件下运行,分别为75.4%,79.1%和26.9%;在添加碳源条件下运行,分别为88.9%,88.5%和55.7%.说明草炭的添加并不能明显提高TN的去除率,而出水水位的提高,可促进系统内厌氧环境的形成从而有利于TN的去除,但同时也会降低氨氮的去除效果;添加碳源可明显提高TN的去除效果,使系统出水TN质量浓度由正常出水水位条件下的22.8mg·L-1下降到14.2mg·L-1,且对COD和NH4+-N去除效果的影响不大.因此,影响该系统去除TN的关键因素是碳源的缺乏.

关 键 词:地下渗滤系统  煤渣  草炭  生活污水
收稿时间:2/12/2009 9:59:40 PM
修稿时间:3/26/2010 1:11:20 PM

Denitrification intensified of compound mixed subsurface wastewater infiltration system
yanqun,Wu Yi-fang,Yang Jian and Dong Wei-hua.Denitrification intensified of compound mixed subsurface wastewater infiltration system[J].Journal of Tongji University(Natural Science),2010,38(5):697-703.
Authors:yanqun  Wu Yi-fang  Yang Jian and Dong Wei-hua
Institution:Tongji University,Tongji University,Tongji University,the Watch and Control Center of Public Utilities Hangzhou City
Abstract:In order to improve the hydraulic permeability and intensify denitrification of subsurface wastewater infiltration system, one apparatus was established in a pilot laboratory with the mediums of 55% cinder, 25% soil and 20% grass carbon mixed completely. The apparatus was dosed 4 times daily with domestic wastewater at 10 cm•d-1. Operating conditions were changed in order to improve the removal efficiency of TN. The average removal efficiency of COD, NH4+-N, TN were 73.3%, 98.2%, 20.1%, respectively, when outlet location was at normal position; The average removal efficiency of COD, NH4+-N, TN were obtained 75.4%, 79.1%, 26.9%, respectively, When outlet location was heightened 30 cm, the bottom of apparatus was submerged so that anaerobic environment was formed; The average removal efficiency of COD, NH4+-N, TN were obtained 88.9%, 88.5%, 55.7%, respectively, when the apparatus was conducted in glucose added in domestic wastewater. The results showed that the removal of TN was not been improved by adding grass carbon in apparatus; outlet location raised could increased TN removal efficiency from 20.1% to 26.9%, but the action was limited; the glucose added could increased TN removal efficiency from 26.9% to 55.7%, and TN concentration of effluent decreased from 22.8 mg•L-1 to 14.2 mg•L-1; at the same time, the removal of COD, NH4+-N had not been affected. So the critical factor of the TN removal blocked was carbon absent.
Keywords:
本文献已被 CNKI 万方数据 等数据库收录!
点击此处可从《同济大学学报(自然科学版)》浏览原始摘要信息
点击此处可从《同济大学学报(自然科学版)》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号