初沉单元中净化材料的筛选及运行参数研究

王钰钦; 郑尧; 钱信宇; 杨晓曦; 陈家长; 吴伟

文章摘要

王钰钦,郑尧,钱信宇,杨晓曦,陈家长,吴伟.初沉单元中净化材料的筛选及运行参数研究[J].农业环境科学学报,2020,39(11):2621-2630.

初沉单元中净化材料的筛选及运行参数研究

Selection of the purification material and its operating parameters for primary precipitation units

投稿时间：2020-03-13

DOI：10.11654/jaes.2020-0272

中文关键词: 养殖尾水初级沉淀单元水质净化材料火山石改性凹凸棒土

英文关键词: aquaculture wastewater primary precipitation unit water purification materials volcanic stone modified attapulgite

基金项目:中央级公益性科研院所基本科研业务费专项资金项目“典型养殖池塘尾水集中处理关键技术及要素优化研究”（2019JBFZ06）；现代农业产业技术体系专项（CARS-46）

作者	单位	E-mail
王钰钦	南京农业大学无锡渔业学院, 江苏无锡 214081
郑尧	南京农业大学无锡渔业学院, 江苏无锡 214081 中国水产科学研究院淡水渔业研究中心, 江苏无锡 214081	zhengy@ffrc.cn
钱信宇	南京农业大学无锡渔业学院, 江苏无锡 214081
杨晓曦	南京农业大学无锡渔业学院, 江苏无锡 214081
陈家长	南京农业大学无锡渔业学院, 江苏无锡 214081 中国水产科学研究院淡水渔业研究中心, 江苏无锡 214081
吴伟	南京农业大学无锡渔业学院, 江苏无锡 214081 中国水产科学研究院淡水渔业研究中心, 江苏无锡 214081	wuw@ffrc.cn

摘要点击次数: 1614

全文下载次数: 1437

中文摘要:

为了对养殖尾水处理系统中沉淀单元净化能力进行优化，以净化前后养殖尾水总氮（TN）、总磷（TP）和高锰酸钾指数（COD_Mn）为检测指标，对除磷型改性凹凸棒土（Al@TCAP-P）、除氮型改性凹凸棒土（Al@TCAP-N）、陶粒砂、细菌屋、火山石、吸氨石和活性炭等7种净化材料进行筛选，以研究其最佳添加量和最佳分布方式。结果表明：从整体上看，Al@TCAP-N对TN去除，火山石对TP、COD_Mn去除效果较好。Al@TCAP-N可在正常沉淀基础上提升36% TN去除率，平铺时去除效果最佳；火山石可提升34%的TP去除率和15%的COD_Mn去除率，堆积时净化效果最佳。Al@TCAP-N和火山石有利于提升沉淀单元净化效能，最佳添加量分别为5.24 g·L^-1和5.02 g·L^-1。

英文摘要:

In order to optimize the purification capacity of the primary precipitation unit of aquaculture wastewater treatment systems, the efficiency of seven purification materials based on three water quality indices, their optimal values, and their distribution was assessed. The three water quality indices included total nitrogen (TN), total phosphorus (TP), and the permanganate index (COD_Mn). The seven purification materials included phosphorus and nitrogen removal-type Al-impregnated thermally treated calcium-rich attapulgites (Al@TCAP-P and Al@TCAP-N, respectively), ceramsite sand, bacterial house, volcanic stone, ammonia absorption stone, and activated carbon. The results showed that Al@TCAP-N and volcanic stone exhibited overall suitable removal rates TN, TP, and COD_Mn. Under normal precipitation, the efficiency of Al@TCAP-N to remove TN was 36%, with tiling as the best treatment type. The efficiencies of volcanic stone to remove TP and reduce COD_Mn were 34% and 15%, respectively, with accumulation as the best treatment type. The additive amounts of Al@TCAP-N and volcanic stone were 5.24 g·L^-1 and 5.02 g·L^-1, respectively, when they were used in the primary precipitation unit to improve purification efficiency.

HTML 查看全文查看/发表评论下载PDF阅读器