本文係以聚丙烯熱壓不織布廢邊製成之混合密度與單一密度之濾材，比較其對於水質過濾之影響。實驗結果顯示混合濾料具有較小粒徑分佈、最大的過濾量、水頭損失分佈均勻、過濾濾程較長與反沖洗效果佳殘留雜質量較少等優點。
This paper is study filter of polypropylene waster which makes of singer-density and mix-density to compare of filter the result show that combined filter have many advantages, such as smaller distance of particle size, bigger filter amount, well distribute of water flow, longer distance of filter, well effect of wash and fewer quantity of residentance.
