摘要:

城市污(wu)(wu)泥(ni)中(zhong)(zhong)重金(jin)(jin)屬(shu)(shu)(shu)(shu)含(han)量及其(qi)生(sheng)(sheng)(sheng)(sheng)物(wu)有(you)(you)效(xiao)(xiao)性(xing)是限制(zhi)污(wu)(wu)泥(ni)農(nong)用的(de)(de)(de)(de)主(zhu)(zhu)要(yao)(yao)(yao)因(yin)素之一，研究(jiu)污(wu)(wu)泥(ni)堆(dui)肥(fei)過(guo)程(cheng)中(zhong)(zhong)重金(jin)(jin)屬(shu)(shu)(shu)(shu)形(xing)(xing)態(tai)(tai)(tai)(tai)及其(qi)生(sheng)(sheng)(sheng)(sheng)物(wu)遷移規(gui)律具有(you)(you)重要(yao)(yao)(yao)意義。用BCR順序(xu)提取(qu)法浸提堆(dui)體(ti)中(zhong)(zhong)各(ge)種(zhong)形(xing)(xing)態(tai)(tai)(tai)(tai)重金(jin)(jin)屬(shu)(shu)(shu)(shu)，研究(jiu)堆(dui)肥(fei)過(guo)程(cheng)中(zhong)(zhong)不(bu)同(tong)形(xing)(xing)態(tai)(tai)(tai)(tai)重金(jin)(jin)屬(shu)(shu)(shu)(shu)的(de)(de)(de)(de)變化(hua)規(gui)律以及主(zhu)(zhu)要(yao)(yao)(yao)影響(xiang)因(yin)素。結果表明：除Zn、Cd外，城市污(wu)(wu)泥(ni)中(zhong)(zhong)Cu、Ni、Cr、Pb主(zhu)(zhu)要(yao)(yao)(yao)以可(ke)氧化(hua)態(tai)(tai)(tai)(tai)及殘渣態(tai)(tai)(tai)(tai)存(cun)在，生(sheng)(sheng)(sheng)(sheng)物(wu)有(you)(you)效(xiao)(xiao)性(xing)較低；堆(dui)肥(fei)處理(li)改變了(le)重金(jin)(jin)屬(shu)(shu)(shu)(shu)的(de)(de)(de)(de)形(xing)(xing)態(tai)(tai)(tai)(tai)分(fen)(fen)布,使污(wu)(wu)泥(ni)中(zhong)(zhong)的(de)(de)(de)(de)酸溶態(tai)(tai)(tai)(tai)及可(ke)還原態(tai)(tai)(tai)(tai)的(de)(de)(de)(de)重金(jin)(jin)屬(shu)(shu)(shu)(shu)向(xiang)更(geng)穩定(ding)的(de)(de)(de)(de)可(ke)氧化(hua)態(tai)(tai)(tai)(tai)及殘渣態(tai)(tai)(tai)(tai)轉(zhuan)變，顯(xian)著(zhu)降低了(le)重金(jin)(jin)屬(shu)(shu)(shu)(shu)的(de)(de)(de)(de)生(sheng)(sheng)(sheng)(sheng)物(wu)有(you)(you)效(xiao)(xiao)性(xing)；堆(dui)肥(fei)結束時Cu、Zn、Ni、Cd、Cr、Pb六(liu)種(zhong)重金(jin)(jin)屬(shu)(shu)(shu)(shu)殘渣態(tai)(tai)(tai)(tai)含(han)量比堆(dui)肥(fei)初始均有(you)(you)所(suo)增(zeng)加，增(zeng)幅分(fen)(fen)別達6.3%、6.7%、22.0%、15.2%、11.0%、40.5%；不(bu)同(tong)形(xing)(xing)態(tai)(tai)(tai)(tai)重金(jin)(jin)屬(shu)(shu)(shu)(shu)含(han)量與(yu)(yu)DOC含(han)量相關性(xing)顯(xian)著(zhu)，而(er)與(yu)(yu)OM相關性(xing)不(bu)強；pH主(zhu)(zhu)要(yao)(yao)(yao)影響(xiang)可(ke)還原態(tai)(tai)(tai)(tai)及生(sheng)(sheng)(sheng)(sheng)物(wu)有(you)(you)效(xiao)(xiao)態(tai)(tai)(tai)(tai)重金(jin)(jin)屬(shu)(shu)(shu)(shu)的(de)(de)(de)(de)分(fen)(fen)布，與(yu)(yu)其(qi)他形(xing)(xing)態(tai)(tai)(tai)(tai)相關性(xing)不(bu)強。

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