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土(tu)工膜(mo)和復(fu)(fu)合土(tu)工膜(mo)的區別總體可以概括為(wei)：產(chan)品(pin)形態不同——一(yi)種是單一(yi)的防滲產(chan)品(pin)一(yi)種是復(fu)(fu)合型的防滲產(chan)品(pin)。產(chan)品(pin)外觀(guan)的不同——土(tu)工膜(mo)的外觀(guan)一(yi)般為(wei)黑色(se)、藍色(se)、綠色(se)、白色(se)、而復(fu)(fu)合土(tu)工膜(mo)的外觀(guan)一(yi)般為(wei)白色(se)。
產(chan)品的原料(liao)和生產(chan)工(gong)(gong)藝(yi)不同——土工(gong)(gong)膜(mo)(mo)是(shi)由(you)塑料(liao)樹脂顆粒通(tong)過三層共(gong)擠工(gong)(gong)藝(yi)或(huo)者平板壓延工(gong)(gong)藝(yi)生產(chan)而成(cheng)而復合土工(gong)(gong)膜(mo)(mo)一般由(you)土工(gong)(gong)布和土工(gong)(gong)膜(mo)(mo)通(tong)過熱復合工(gong)(gong)藝(yi)生產(chan)而成(cheng)。

執(zhi)行標準不同，復(fu)合土工(gong)膜和土工(gong)膜是兩種不同的(de)產品(pin)，復(fu)合土工(gong)膜執(zhi)行國標GB/T17642-2008，而土工(gong)膜執(zhi)行國標GB/T17643-2011或者CJ/T234-2006標準。

適用范(fan)圍不同，復(fu)(fu)(fu)(fu)合土(tu)(tu)(tu)工(gong)膜(mo)(mo)(mo)是一(yi)(yi)(yi)種復(fu)(fu)(fu)(fu)合型(xing)產品，復(fu)(fu)(fu)(fu)合土(tu)(tu)(tu)工(gong)膜(mo)(mo)(mo)一(yi)(yi)(yi)般分為兩(liang)布一(yi)(yi)(yi)膜(mo)(mo)(mo)和一(yi)(yi)(yi)布一(yi)(yi)(yi)膜(mo)(mo)(mo)，兩(liang)布一(yi)(yi)(yi)膜(mo)(mo)(mo)就是土(tu)(tu)(tu)工(gong)膜(mo)(mo)(mo)的(de)(de)上下兩(liang)面(mian)均復(fu)(fu)(fu)(fu)合了土(tu)(tu)(tu)工(gong)布，而一(yi)(yi)(yi)布一(yi)(yi)(yi)膜(mo)(mo)(mo)就是土(tu)(tu)(tu)工(gong)膜(mo)(mo)(mo)的(de)(de)上面(mian)或者下面(mian)（只有一(yi)(yi)(yi)面(mian)）復(fu)(fu)(fu)(fu)合了土(tu)(tu)(tu)工(gong)布。復(fu)(fu)(fu)(fu)合土(tu)(tu)(tu)工(gong)膜(mo)(mo)(mo)因(yin)為中間的(de)(de)防(fang)(fang)水層（土(tu)(tu)(tu)工(gong)膜(mo)(mo)(mo)）是由(you)土(tu)(tu)(tu)工(gong)布進行保護，故可(ke)以(yi)用于施工(gong)環境較為復(fu)(fu)(fu)(fu)雜的(de)(de)野(ye)外防(fang)(fang)滲(shen)(shen)(shen)工(gong)程。一(yi)(yi)(yi)般復(fu)(fu)(fu)(fu)合土(tu)(tu)(tu)工(gong)膜(mo)(mo)(mo)可(ke)以(yi)用于各種水利工(gong)程的(de)(de)防(fang)(fang)滲(shen)(shen)(shen)，比如說河道(dao)防(fang)(fang)滲(shen)(shen)(shen)、江(jiang)河治理防(fang)(fang)滲(shen)(shen)(shen)、人工(gong)湖防(fang)(fang)滲(shen)(shen)(shen)、景觀湖防(fang)(fang)滲(shen)(shen)(shen)、堤壩(ba)防(fang)(fang)滲(shen)(shen)(shen)、水渠(qu)防(fang)(fang)滲(shen)(shen)(shen)等。

而(er)常規的(de)土(tu)工(gong)(gong)(gong)膜(mo)是一(yi)種由樹脂顆(ke)粒通過高(gao)溫融化、擠出生產而(er)成的(de)塑料產品，土(tu)工(gong)(gong)(gong)膜(mo)根據材質一(yi)般可以(yi)分為(wei)HDPE土(tu)工(gong)(gong)(gong)膜(mo)，LDPE土(tu)工(gong)(gong)(gong)膜(mo)，LLDPE土(tu)工(gong)(gong)(gong)膜(mo)和(he)PVC土(tu)工(gong)(gong)(gong)膜(mo)，土(tu)工(gong)(gong)(gong)膜(mo)除了具(ju)有良好的(de)防滲(shen)效(xiao)果外(wai)，還具(ju)有較(jiao)高(gao)的(de)抗拉性能、較(jiao)高(gao)的(de)耐酸堿性能以(yi)及較(jiao)高(gao)的(de)使用(yong)壽命等(deng)。土(tu)工(gong)(gong)(gong)膜(mo)多用(yong)于市政防滲(shen)工(gong)(gong)(gong)程、養(yang)殖防滲(shen)工(gong)(gong)(gong)程、填(tian)埋(mai)場防滲(shen)工(gong)(gong)(gong)程、尾(wei)礦(kuang)處(chu)理場防滲(shen)工(gong)(gong)(gong)程、反應(ying)池防滲(shen)工(gong)(gong)(gong)程、雨(yu)水收集(ji)池防滲(shen)等(deng)工(gong)(gong)(gong)程。