偉斯重金屬廢水處理設備，電鍍廢水處理設備
國(guo)內(nei)通常采(cai)用的(de)(de)重(zhong)(zhong)金(jin)(jin)(jin)屬(shu)廢(fei)水(shui)處(chu)(chu)(chu)理(li)(li)方法，包括石灰(hui)中(zhong)(zhong)和法和硫化法等(deng)。這些傳(chuan)(chuan)統的(de)(de)處(chu)(chu)(chu)理(li)(li)工藝，雖然可以(yi)將廢(fei)水(shui)中(zhong)(zhong)的(de)(de)重(zhong)(zhong)金(jin)(jin)(jin)屬(shu)去除掉，但(dan)是處(chu)(chu)(chu)理(li)(li)效(xiao)果(guo)并不穩(wen)定(ding)(ding)，處(chu)(chu)(chu)理(li)(li)后(hou)(hou)(hou)回收的(de)(de)清水(shui)水(shui)質(zhi)仍(reng)難以(yi)確保(bao)穩(wen)定(ding)(ding)達標排(pai)(pai)放(fang)(fang)，而且(qie)(qie)還會(hui)產生(sheng)(sheng)二次污染。納(na)米(mi)(mi)重(zhong)(zhong)金(jin)(jin)(jin)屬(shu)水(shui)處(chu)(chu)(chu)理(li)(li)技(ji)(ji)術不僅能使處(chu)(chu)(chu)理(li)(li)后(hou)(hou)(hou)的(de)(de)出水(shui)水(shui)質(zhi)優于(yu)國(guo)家規定(ding)(ding)的(de)(de)排(pai)(pai)放(fang)(fang)標準(zhun)且(qie)(qie)穩(wen)定(ding)(ding)可靠(kao)，投資(zi)成(cheng)(cheng)本和運行成(cheng)(cheng)本較(jiao)低，與水(shui)中(zhong)(zhong)重(zhong)(zhong)金(jin)(jin)(jin)屬(shu)離子(zi)反應快，吸(xi)附、處(chu)(chu)(chu)理(li)(li)容量是普通材料的(de)(de)10倍到(dao)1000倍，而且(qie)(qie)使沉淀的(de)(de)污泥量較(jiao)傳(chuan)(chuan)統工藝降(jiang)低50%以(yi)上，污泥中(zhong)(zhong)雜(za)質(zhi)也(ye)少，有利于(yu)后(hou)(hou)(hou)續(xu)處(chu)(chu)(chu)理(li)(li)和資(zi)源回收。有數據(ju)顯示，同樣是每(mei)日處(chu)(chu)(chu)理(li)(li)300立方米(mi)(mi)重(zhong)(zhong)金(jin)(jin)(jin)屬(shu)污水(shui)量，傳(chuan)(chuan)統工藝每(mei)天要(yao)產生(sheng)(sheng)25噸石灰(hui)渣污泥，而采(cai)用納(na)米(mi)(mi)技(ji)(ji)術后(hou)(hou)(hou)每(mei)月(yue)只(zhi)產生(sheng)(sheng)25噸納(na)米(mi)(mi)金(jin)(jin)(jin)屬(shu)泥。尤其(qi)值得關(guan)注的(de)(de)是，這種(zhong)污泥中(zhong)(zhong)的(de)(de)重(zhong)(zhong)金(jin)(jin)(jin)屬(shu)單(dan)位含量提高了30倍。若以(yi)銅(tong)冶煉(lian)廠(chang)的(de)(de)廢(fei)水(shui)處(chu)(chu)(chu)理(li)(li)為例，其(qi)回收的(de)(de)納(na)米(mi)(mi)銅(tong)泥品位已達到(dao)20%，完全可以(yi)作為銅(tong)礦資(zi)源再生(sheng)(sheng)利用。
無害化處理
重(zhong)金(jin)屬(shu)(shu)廢(fei)水經(jing)處(chu)(chu)理(li)(li)形成(cheng)的(de)(de)濃縮(suo)產物(wu)，如(ru)因(yin)技術、經(jing)濟等(deng)原因(yin)不(bu)能回收利用，或者經(jing)回收處(chu)(chu)理(li)(li)后(hou)仍有較(jiao)高濃度(du)的(de)(de)金(jin)屬(shu)(shu)物(wu)未達到(dao)排放標準時，不(bu)能任意棄置(zhi)，而應進行無害化(hua)處(chu)(chu)理(li)(li)。常用方法是不(bu)溶(rong)(rong)(rong)化(hua)和固(gu)化(hua)處(chu)(chu)理(li)(li)，就是將污泥(ni)等(deng)容易溶(rong)(rong)(rong)出重(zhong)金(jin)屬(shu)(shu)的(de)(de)廢(fei)物(wu)同(tong)一些重(zhong)金(jin)屬(shu)(shu)的(de)(de)不(bu)溶(rong)(rong)(rong)化(hua)劑、固(gu)定劑等(deng)混合(he)，使其中(zhong)的(de)(de)重(zhong)金(jin)屬(shu)(shu)轉(zhuan)變成(cheng)難(nan)溶(rong)(rong)(rong)解的(de)(de)化(hua)合(he)物(wu)，并且加入(ru)如(ru)水泥(ni)、瀝青等(deng)膠結劑，將廢(fei)物(wu)制(zhi)成(cheng)形狀有規則、有一定強度(du)、重(zhong)金(jin)屬(shu)(shu)浸(jin)出率(lv)很低(di)的(de)(de)固(gu)體(ti)；還可用燒結法將重(zhong)金(jin)屬(shu)(shu)污泥(ni)制(zhi)成(cheng)不(bu)溶(rong)(rong)(rong)性固(gu)體(ti)。
