滇池富藻水静置分离特性影响因素的初步研究

A Preliminary Study of Impact Factors on Separation Characteristics of Algae from Algae-laden Water Sample of Dianchi Lake under the Static Condition

本文研究了滇池富藻水静置分离效果,初步探明了水样深度、体积、温度、光照等因素对其静置分离速度的影响.研究发现,在体积相同时,水样高度对最大清水比例指标没有影响.不同高度的水样藻、水分离程度(即清水比例)均随静置时间的延长有逐渐增加的趋势.在水样高度相同时,水样体积大小的差异对藻、水分离速度的影响总体较小,具体影响大小与体积差异大小有关,体积差异越大,影响越大,但主要影响发生在静置后30~40 min内.水温对水样藻、水分离速度具有显著影响,水温越高,藻、水分离速度越快.温差越大,藻、水分离速度差异越大.水样中藻密度大小对静置藻、水分离速度具有明显影响.密度越低,藻、水分离速度越快,最终完成分离的时间越短.太阳光照对静置条件下的藻、水分离速度有明显的影响.

To purify the algae-laden water（ ALW） more effectively,the separation characteristics of algae from ALW sample of Dianchi Lake under the static condition are studied. Especially,the effects of depth,volume,temperature of ALW sample and the light density on the separation characters are investigated. It is shown that the sample depth has no significant effect on the final volume of separated clean water under the condition of the same sample volume. And the separated clean water volume increases with time increasing. For the ALW sample under the same depth,the volume has a little effect on the separation speed of water and algae. The greater difference of the volume is,the greater the difference of the separation speed is,and the main difference is found after standing for 30—40 minutes. The sample temperature has significant effect on the separation speed. The higher temperature is,the higher separation speed is. The individual density of algae affects the separation speed obviously. The lower the density is,the higher the separation speed is. And the solar light density also has great positive effect on the separation speed.