椎实螺是原水生物预处理填料上易大量生长的一种软体动物。试验研究表明 :当其个体数量少而且体小时 ,对原水生物预处理的影响较小 ;当其大量生长且个体在 5～ 10mm大小时 ,对原水生物预处理的危害较大。采用静置、水力冲洗法清除池内的椎实螺简单、易行 ,可作为工程的控制措施。淡水壳菜在填料的中轴附近大量生长会减少填料的总表面积 ,预过滤可防止其进入池内 The spinella is a kind of mollusk that is easy to grow on the raw water pretreatment fillers. Experimental studies have shown that: when the number of individuals is small and the body is small, the biological pretreatment of raw water has little effect; when it is grown in large quantities and the individual is in the range of 5 to 10 mm, the pretreatment of raw water is more harmful. The use of standing, hydraulic flushing method to clear the pool of spinella Simple, easy to use, as engineering control measures. Freshwater shelled cabbage in the filler near the central axis of the growth will reduce the total surface area of ​​the filler, pre-filter to prevent it into the pool