摘要
将3株从天津市某海水养殖场底泥中分离到的好氧反硝化菌按照3∶2∶1的比例组合成好氧反硝化复合菌剂,并采用5%聚乙烯醇、2%海藻酸钠和3%硅藻土将好氧反硝化复合菌剂包埋形成固定化生物硅藻土小球。将其投加到循环式活性污泥(CAST)反应器中,考察固定化生物硅藻土小球强化CAST工艺对海水养殖废水化学需氧量(COD)、无机氮和磷酸盐的去除效果。结果表明,在相同运行条件下,投加固定化生物硅藻土小球的CAST工艺对海水养殖废水中COD、无机氮和磷酸盐的去除率维持在83%、99%和96%以上,与传统CAST工艺相比分别提高了30、28和55个百分点左右。
The three aerobic denitrifier isolated from sediment of one marine aquaculture farm in Tianjin city were made into aerobic denitrification microbial agent in a ratio of 3∶2∶1,and 5%polyvinyl alcohol,2%sodium alginate and 3%diatomite was used to em⁃bed the aerobic denitrification microbial agent to form immobilized bio-diatomite.The immobilized bio-diatomite was added to the cy⁃clic activated sludge technology(CAST)reactor to investigate the treatment capability of COD,inorganic nitrogen and phosphate in marine aquaculture wastewater by the cyclic activated sludge technology reactor with immobilized bio-diatomite.The results showed that under the same operation condition,the reduction rate of COD,inorganic nitrogen and phosphate by the cyclic activated sludge technology reactor with immobilized bio-diatomite can keep above 83%,99%and 96%,respectively.It was 30 pecentage points,28 pecentage points and 55 pecentage points higher than that of the traditional cyclic activated sludge technology reactor,respectively.
作者
陈进斌
曹军瑞
苗英霞
谢宝龙
马晓蕾
CHEN Jin-bin;CAO Jun-rui;MIAO Ying-xia;XIE Bao-long;MA Xiao-lei(Institute of Seawater Desalination and Multipurpose Utilization,Ministry of Natural Resources of the People’s Republic of China,Tianjin 300192,China)
出处
《湖北农业科学》
2020年第11期62-64,共3页
Hubei Agricultural Sciences
基金
中央级公益性科研院所基本科研业务费专项资金项目(K-JBYWF-2018-QR01)。
关键词
固定化生物硅藻土
循环式活性污泥法
海水养殖废水
immobilized bio-diatomite
cyclic activated sludge technology
marine aquaculture wastewater
