測定方法參照CJ/T 43-2005《水處理用濾料》編寫。
操作方法:
稱取干燥石英砂濾料樣(yang)品500g,置(zhi)于(yu)1000mL洗砂(sha)筒(tong)中,加入(ru)(ru)水(shui)(shui),充(chong)(chong)分攪拌(ban)(ban)5min,浸泡2h,然(ran)后在水(shui)(shui)中攪拌(ban)(ban)淘洗樣(yang)品,約1min后,把渾水(shui)(shui)慢慢倒入(ru)(ru)孔徑(jing)為0.08mm的篩(shai)中。測定前,篩(shai)的兩面(mian)先用水(shui)(shui)濕潤。在整個(ge)操(cao)作過程中,應避(bi)免石(shi)英砂(sha)顆粒損失。再(zai)向筒(tong)中加入(ru)(ru)水(shui)(shui),重復(fu)上(shang)述操(cao)作,直至筒(tong)中水(shui)(shui)清(qing)澈為止。用水(shui)(shui)沖洗截(jie)留在篩(shai)上(shang)的石(shi)英砂(sha)顆粒,并將(jiang)篩(shai)放在水(shui)(shui)中來回搖動,以充(chong)(chong)分洗除小(xiao)于(yu)0.08mm的石(shi)英砂(sha)顆粒。然(ran)后將(jiang)篩(shai)上(shang)截(jie)留的石(shi)英砂(sha)顆粒和(he)筒(tong)中洗凈的石(shi)英砂(sha)樣(yang)品一并倒入(ru)(ru)已恒重的搪瓷盤中,置(zhi)于(yu)105-110℃的干燥箱中干燥至恒量。
計(ji)算(suan)方法:
石英砂濾料(liao)含泥量按下(xia)式(shi)計(ji)算(suan)。
C=(G-G1)/G×100
式中:
C—含泥(ni)量,%;
G—淘洗前(qian)樣品的質量,g;
G1—淘洗后樣品(pin)的質量,g。