摘要
筛选获得一株高效产絮凝剂菌株WX-7，通过16srDNA鉴定，该菌株隶属于微杆菌属。在pH为8．0、接种量1％、30℃、170r／min条件下，添加蔗糖、玉米浆干粉，培养16～24h生长最佳。WX-7菌株的絮凝活性主要分布于菌体．最佳助凝剂为Ca2＋。在pH〉11条件下，向0．5％的高岭土悬液投加3mL菌液和3m．L1％的CaCl2溶液，絮凝活性最高可达98％。絮凝剂成分对热处理不敏感。WX-7菌株所产絮凝剂能有效去除印染废水的色度和COD，脱色率和COD去除率分别为81％、42％。在废水处理中具有一定的应用前景。
An efficiently flocculant-producing bacterial strain WX-7 has been screened out and obtained as Microbacterium sp. ,through 16s rDNA determination. It grows best under the following conditions ：pH is 8.0,inoculum concentration 1%, temperature 30 ℃, and rotational powder and culturing for 16-24 h. The flocculating speed 170 r/min ,by adding sucrose and dried corn steep liquor activity of Strain WX-7 mainly distributes on thallus. The best coagulant aid is Ca2＋. When pH is higher than 11, and 3 mL of bacterial liquid, and 3 mL of CaC12 solution （ 1% ） are added to kaolin suspension （0.5%）, the maximum flocculating activity can reach 98%. The flocculant ingredient is not sensitive about heat treatment. The flocculant produced from Strain WX-7 can effectively remove the chroma and COD from dyeing wastewater. The decolorization rate and COD removing rate are 81% and 42%, respectively. It indicates that this strain has certain application prospect in wastewater treatment fields.
作者
许尤厚
周洪波
Xu Youhou Zhou Hongbo(Key Laboratory ofGuangxi Beibu（Northern） Gulf Marine Biodiversity Conservation, Qinzhou University, Qinzhou 535000, China School of Resource Processing and Bioengineering, Central South University, Changsha 410083, China)
出处
《工业水处理》
CAS
CSCD
北大核心
2016年第12期59-63,共5页
Industrial Water Treatment
基金
广西自然科学基金项目(2013GXNSFBA019104)
广西高校优秀人才资助计划项目
钦州学院博士启动经费
关键词
微生物絮凝剂
絮凝活性
印染废水处理
microbial flocculants
flocculation activity
dyeing wastewater treatment
作者简介
许尤厚（1980-），博士，副教授。电话：0777-2807282，E-mail：36714447@qq．com
