
椰(ye)殼活(huo)性(xing)(xing)炭(tan)(tan)*早用(yong)于(yu)去(qu)除(chu)生活(huo)用(yong)水(shui)的臭(chou)味(wei)。沼澤水(shui)常(chang)帶(dai)土(tu)味(wei),湖泊和(he)(he)水(shui)庫水(shui)常(chang)帶(dai)藻類形成的臭(chou)味(wei),用(yong)活(huo)性(xing)(xing)炭(tan)(tan)處理(li)*為有(you)(you)效,并且只需在(zai)出(chu)現臭(chou)味(wei)時(shi)使用(yong)。大(da)多用(yong)粉狀活(huo)性(xing)(xing)炭(tan)(tan),直接投入(ru)混凝(ning)沉淀(dian)池(chi)(chi)或(huo)曝氣池(chi)(chi)內,隨污泥排除(chu),不再回收利用(yong)。椰(ye)殼活(huo)性(xing)(xing)炭(tan)(tan)能去(qu)除(chu)水(shui)中產生臭(chou)味(wei)的物(wu)質和(he)(he)有(you)(you)機物(wu),如酚、苯(ben)、氯、農藥、洗滌劑、三鹵(lu)甲烷(wan)等。此外,對銀、鎘、鉻酸根、氰(qing)、銻、砷、鉍、錫、汞、鉛、鎳等離子(zi)也有(you)(you)吸附能力。
近年來(lai),國外(wai)在新產品(pin)開發方面,一是采用多(duo)種原料,多(duo)種工(gong)藝研制出(chu)(chu)具(ju)有特殊性(xing)能(neng)(neng)(neng)的活(huo)(huo)性(xing)炭(tan)。二是采用對椰(ye)殼(ke)活(huo)(huo)性(xing)炭(tan)進行(xing)二次加工(gong)的方法研制出(chu)(chu)多(duo)種高效能(neng)(neng)(neng)、多(duo)功能(neng)(neng)(neng)的活(huo)(huo)性(xing)炭(tan)制品(pin),使椰(ye)殼(ke)活(huo)(huo)性(xing)炭(tan)呈現新的活(huo)(huo)力。
吸(xi)(xi)附(fu)(fu)(fu)值越(yue)(yue)(yue)高(gao)(gao)(gao)椰殼活(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)性(xing)(xing)(xing)(xing)能(neng)就(jiu)越(yue)(yue)(yue)好嗎?在(zai)生產(chan)過程中,提(ti)高(gao)(gao)(gao)活(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)吸(xi)(xi)附(fu)(fu)(fu)性(xing)(xing)(xing)(xing)能(neng)的(de)(de)(de)**辦法就(jiu)是(shi)控制生產(chan)工(gong)藝,使(shi)單位體積內盡可能(neng)多地增加活(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)的(de)(de)(de)孔隙結構。因(yin)(yin)此(ci)吸(xi)(xi)附(fu)(fu)(fu)性(xing)(xing)(xing)(xing)越(yue)(yue)(yue)高(gao)(gao)(gao)的(de)(de)(de)活(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)由于含有大量的(de)(de)(de)孔隙,使(shi)得其(qi)本身的(de)(de)(de)密度變得越(yue)(yue)(yue)來(lai)越(yue)(yue)(yue)小(xiao),這(zhe)就(jiu)是(shi)為什么吸(xi)(xi)附(fu)(fu)(fu)性(xing)(xing)(xing)(xing)越(yue)(yue)(yue)好的(de)(de)(de)活(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)手(shou)感越(yue)(yue)(yue)輕的(de)(de)(de)原因(yin)(yin)(前提(ti)是(shi)使(shi)用(yong)同一(yi)種原料生產(chan),沒有浸過水或吸(xi)(xi)附(fu)(fu)(fu)過其(qi)他物質)。同時(shi)隨著吸(xi)(xi)附(fu)(fu)(fu)性(xing)(xing)(xing)(xing)的(de)(de)(de)提(ti)高(gao)(gao)(gao)活(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)的(de)(de)(de)生產(chan)成本也就(jiu)越(yue)(yue)(yue)高(gao)(gao)(gao),而且是(shi)呈幾(ji)何級數增長(chang),這(zhe)就(jiu)是(shi)市(shi)場上有用(yong)低吸(xi)(xi)附(fu)(fu)(fu)活(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)冒充高(gao)(gao)(gao)吸(xi)(xi)附(fu)(fu)(fu)活(huo)(huo)性(xing)(xing)(xing)(xing)炭(tan)(tan)(tan)銷售的(de)(de)(de)動機。
為了(le)統一(yi)標準(zhun),使(shi)生產可控制(zhi)化,在活(huo)性炭(tan)行業中通常用碘吸附值(zhi)或四(si)氯化碳(tan)吸附值(zhi)(CTC)來標定(ding)活(huo)性炭(tan)的吸附值(zhi),吸附值(zhi)越高,活(huo)性炭(tan)的吸附能力就越強。
椰殼活(huo)性(xing)(xing)炭(tan)生產(chan)之所(suo)以有如此迅速的發展,這應(ying)歸功于應(ying)用領域(yu)的擴(kuo)大(da)和活(huo)性(xing)(xing)炭(tan)本身的不(bu)可(ke)替代性(xing)(xing)。活(huo)性(xing)(xing)炭(tan)被廣(guang)泛用于液相和氣相中起吸附、脫色、精制、分(fen)離(li)、催化及催化劑(ji)載(zai)體等。在發達(da)國家活(huo)性(xing)(xing)炭(tan)在環境治理方面用量約占(zhan)總量的1/3,主要是水源、飲水凈化及工業廢水、生活(huo)廢水處(chu)理。
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