摘要
以阿维菌素废水为处理对象，在工业化中温上流式厌氧污泥床（UASB）反应器中研究了污泥无载体颗粒化过程中的污泥特性。研究表明，接种絮状污泥，经过189d运行成功实现污泥无载体颗粒化。在污泥颗粒化过程中污泥特性发生了显著变化：挥发性悬浮固体（VSS）与悬浮固体（SS）的质量比由接种时的0．45提高到0．8；最大比产甲烷速率由57．3提高到299mL／（gVSS·d）；胞外聚合物（ECP）与污泥质量比由31．4提高到58．3mg／g，同时发现ECP含量的增加对于促进污泥无载体颗粒化起到了关键作用。成熟颗粒污泥以灰黑色为主，粒径为1．0～2．0mm，密度为1．082g／cm^3，平均沉降速度为65．3m／h。颗粒污泥表面以丝状菌和杆菌为主，内部多为球菌和短杆菌。
The sludge characteristics in a full-scale upflow anaerobic sludge blanket（UASB） reactor treating avermectin wastewater are investigated in the process of sludge granulation without carrier. The results show that： inoculated with floc sludge, sludge granulation without carrier can be realized successfully after running for 189 d in the bioreactor. The characteristics of sludge varies remarkably during the sludge granulation. The ratio of VSS/SS increases from 0. 45 to 0.8. The settling velocities are significantly improved. The methanogenic activity increases from 57.3 to 299 mL/（ gVSS·d） and the content of extra cellular polymers（ECP） varies from 31.4 to 58.3 mg/g. The ECP increase plays a key role in the process of granular sludge formation without carrier. The mature granular sludge is grey-black with the diameter of 1.0 to 2.0 mm, the specific gravity of 1. 082 g/cm^3 and the average settling velocity of 65.3 m/h. The bacilliform and filamentous fungi are dominant on the surface of the granular sludge and the rod-type and shortly bacillary fungi are dominant inside the granular sludge.
出处
《南京理工大学学报》
EI
CAS
CSCD
北大核心
2008年第5期655-660,共6页
Journal of Nanjing University of Science and Technology
基金
河北省自然科学基金(E2008000694)
河北省科技厅科技攻关项目(06276705)
关键词
上流式厌氧反应器
工业化反应器
阿维菌素废水
无载体颗粒化
污泥特性
upflow anaerobic sludge blankets
full-scale reactors
avermectin wastewater
granulation without carrier
sludge characteristics
