摘要
天然橡胶加工废水具有水质、水量变化大的特点,冲击负荷下厌氧生物处理通常效果不佳。针对这一问题,利用海藻酸钙(SA)、聚乙烯醇(PVA)复合材料对本实验室筛选到的同步脱硫除氮菌B16进行包埋,利用包埋固定化后的菌处理天然橡胶加工废水。结果表明:14 d后包埋菌株对实际废水氨氮、总氮及硫酸盐的去除效果分别为44.05%、46.29%和26.06%,并且氨氮去除速率最高可达110.59 mg/(L·d),硫酸盐平均去除速率为13.8 mg/(L·d),均高于游离菌株。包埋小球存在一个物料内外传递的时间差,可提供细菌对环境变化适应的一个缓冲的时间,使得包埋固定化后的菌对于水质的变化具有更好的适应性,非常适用于处理天然橡胶加工废水。
Natural rubber processing wastewater has large changes in quality and quantity. The anaerobic biological treatment of wastewater is often ineffective under shock load conditions. Aimed at this, the practicability of immobilized bacterium for natural rubber processing wastewater treatment was studied in this paper. After immobilized by polyvinyl alcohol（PYA）-sodium alginate（SA）, the bacterium B16 with simultaneous desulfurization and denitrification was used to treat the fresh wastewater collected from natural rubber processing factory. After 14 days, in the immobilized bacteria beads treatment, the removal efficiency of nitrogen, total nitrogen and sulfate was 44.05%, 46.29%, 26.06%, respectively, and the maximum removal rate of nitrogen was l10.59mg/（L-d） while the average removal rate of sulfate was 13.8 mg/（L.d）, which were higher than that treated by bacterium itself. The material transfer time of immobilized bacteria beads could provide buffer time for bacteria adapting to environmental change, so that the immobilized bacterium have better adaptability to the change of water quality, and it is very suitable for the treatment of natural rubber processing wastewater.
出处
《热带作物学报》
CSCD
北大核心
2015年第9期1714-1718,共5页
Chinese Journal of Tropical Crops
基金
海南省自然科学基金(No.312035)
中国热带农业科学院橡胶研究所基本科研业务费专项(No.1630022012012)
关键词
包埋固定化
同步脱硫除氮菌
天然橡胶加工废水处理
Immobilize
Bacterium with simultaneous desulfurization and denitrification
Natural rubber processing wastewater treatment
