固定化藻菌对去除珍珠蚌养殖废水氮磷的效果分析

研究了固定化EM藻菌（CEMI）、固定化活性污泥藻菌（CAMI）、固定化EM-活性污泥协联藻菌（CEAMI）对珍珠蚌养殖废水中氮磷的去除效果以及光照强度、温度对三者脱氮去磷的影响。以无包埋藻菌胶球（NM）作为对照组进行96h持续去N、P实验,结果表明在设计条件下CEAMI、CAMI和CEMI的去N峰值（最高值）分别为91.16、88.07、80.45,去P峰值（最高值）分别为84.67、76.28、77.81,CAMI去N峰值出现在持续处理56h处,CAMI去P峰值和CEAMI、CEMI的去N、P峰值均出现在64h处;CEMI前40h处于低N、P去除率的适应期,此期间CEMI与CEAMI、CAMI的去N效果具有显著性差异。研究还表明,光照强度与温度是该三者去N、P的重要环境因子,CEAMI的去N峰值所需光强为4000lx,其去P和CAMI、CEMI的去N、P峰值均为5000lx;三者的最适去N温度为25℃,最适去P温度为30℃。

Analysis About Effect of Algae-bacteria Immobilized Treat Nitrogen and Phosphorus of Pearl Mussel Aquaculture Wastewater

Effects of EM bacteria-algae immobilized（CEMI）,Activated sludge bacteria-algae immobilized（CAMI） and EM-Activated sludge-bacteria federation algae immobilized（CEAMI） on the removal of nitrogen and phosphorus in pearl mussel aquaculture wastewater were studied,as well as light intensity and temperature affected on the removal efficiency of nitrogen and phosphorus.Experiment with non-embedded algae bacteria ball（NM） as the control group were conducted 96 hour successively.Results showed that CEAMI,CAMI and CEMI＇s removal N peak（maximum value） were 91.16%,88.07%,80.45% in the design condition,and removal P peak（maximum value） were 84.67%,76.28%,77.81%.Removal N of CAMI reach peak after continuous treatment 56 hours,but CAMI removal P peak,CEAMI and CEMI＇s removal N,P peak were found after continuous treatment 64 hours;CEMI was in a low N,P removal rate in prior 40 hours,which was the idiographic adaptation period.During this period CEMI,CEAMI and CAMI＇s removal N effects were significant differences.The study also indicated that light intensity and temperature were the important environmental factors which affect the N,P removal rate.CEAMI＇s N removal rate went peak at 4 000 lx of intensity,removal P peak and CAMI,CEMI＇s removal N,P peak were at 5 000 lx;The optimum removal N temperature of them was 25 ℃,the optimum removal P temperature was 30 ℃.The contribution rate of NM ball removal N,P were approximately 1.16%,0.47%.