活(huo)(huo)(huo)性(xing)炭(tan)(tan)的(de)(de)(de)再(zai)生是(shi)將已使用(yong)過(guo)的(de)(de)(de)活(huo)(huo)(huo)性(xing)炭(tan)(tan)經(jing)過(guo)一定方式的(de)(de)(de)處理(li)(li),使其恢復吸附能力的(de)(de)(de)過(guo)程。對活(huo)(huo)(huo)性(xing)炭(tan)(tan)進行(xing)再(zai)生處理(li)(li)可(ke)以節約運行(xing)成本,減(jian)少(shao)活(huo)(huo)(huo)性(xing)炭(tan)(tan)資源(yuan)的(de)(de)(de)浪費(fei),并且還可(ke)以回收其所吸附的(de)(de)(de)某(mou)些具(ju)有(you)利用(yong)價值的(de)(de)(de)物質,避免了因丟棄未處理(li)(li)的(de)(de)(de)活(huo)(huo)(huo)性(xing)炭(tan)(tan)而造成二(er)次污(wu)染的(de)(de)(de)風險。因此對活(huo)(huo)(huo)性(xing)炭(tan)(tan)進行(xing)再(zai)生處理(li)(li)無論(lun)從環境保(bao)護還是(shi)經(jing)濟、資源(yuan)節約角度來(lai)考慮(lv)都具(ju)有(you)非常重要的(de)(de)(de)意義。
活性(xing)(xing)(xing)(xing)(xing)炭(tan)(tan)本身具有(you)耐熱性(xing)(xing)(xing)(xing)(xing)、耐酸(suan)堿性(xing)(xing)(xing)(xing)(xing)、耐氧化性(xing)(xing)(xing)(xing)(xing),還具有(you)一(yi)定(ding)的強度(du),因此(ci)再生(sheng)(sheng)(sheng)處理除了應(ying)盡量保證活性(xing)(xing)(xing)(xing)(xing)炭(tan)(tan)的以上性(xing)(xing)(xing)(xing)(xing)質以外,還要(yao)使(shi)再生(sheng)(sheng)(sheng)后活性(xing)(xing)(xing)(xing)(xing)炭(tan)(tan)的吸附性(xing)(xing)(xing)(xing)(xing)能(neng)(neng)達到(dao)原炭(tan)(tan)的90%以上,同時(shi)盡可(ke)能(neng)(neng)降低再生(sheng)(sheng)(sheng)處理過程中(zhong)炭(tan)(tan)的機械磨損和破碎,使(shi)再生(sheng)(sheng)(sheng)得(de)率達到(dao)90%以上。另外,必須考慮再生(sheng)(sheng)(sheng)過程的經濟(ji)性(xing)(xing)(xing)(xing)(xing),以現在(zai)廣泛使(shi)用的加熱再生(sheng)(sheng)(sheng)法為例,據(ju)報道每天(tian)活性(xing)(xing)(xing)(xing)(xing)炭(tan)(tan)的使(shi)用量大致在(zai)100kg以上時(shi),進行再生(sheng)(sheng)(sheng)才有(you)利。因此(ci),再生(sheng)(sheng)(sheng)經濟(ji)性(xing)(xing)(xing)(xing)(xing)能(neng)(neng)方面也是考察活性(xing)(xing)(xing)(xing)(xing)炭(tan)(tan)再生(sheng)(sheng)(sheng)得(de)一(yi)個重要(yao)因素。
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