欧美日韩精品久久久久_成熟丰满熟妇高潮XXXXX视频_伊人一本到本勒蕉在线_性一交一乱一伦一色一情丿按摩

鋼鐵行業從(cong)煉(lian)(lian)焦、燒(shao)結、煉(lian)(lian)鐵、煉(lian)(lian)鋼到軋鋼整(zheng)個冶煉(lian)(lian)工藝均涉及不同類型污染物(wu)，涵蓋(gai)著(zhu)廢氣、廢水和(he)廢渣(zha)三種類型。

具體(ti)而(er)言，燒(shao)結和煉(lian)(lian)焦環(huan)節(jie)(jie)主要(yao)產生(sheng)(sheng)(sheng)硫(liu)化(hua)(hua)物(wu)、氮氧化(hua)(hua)物(wu)和煙塵等(deng)(deng)廢氣，煉(lian)(lian)鐵及(ji)煉(lian)(lian)鋼環(huan)節(jie)(jie)主要(yao)產生(sheng)(sheng)(sheng)爐渣等(deng)(deng)固體(ti)廢棄物(wu)，而(er)軋(ya)鋼環(huan)節(jie)(jie)產生(sheng)(sheng)(sheng)的污(wu)染(ran)物(wu)則(ze)主要(yao)是冷卻(que)水等(deng)(deng)廢水污(wu)染(ran)，其中，燒(shao)結和煉(lian)(lian)焦環(huan)節(jie)(jie)產生(sheng)(sheng)(sheng)的硫(liu)化(hua)(hua)物(wu)、氮氧化(hua)(hua)物(wu)和煙粉塵等(deng)(deng)氣體(ti)污(wu)染(ran)物(wu)最為嚴重(zhong)。

鋼(gang)鐵(tie)行業產生的廢(fei)氣以硫化物(wu)、氮(dan)氧(yang)化物(wu)及煙(yan)塵等為(wei)主(zhu)，主(zhu)要(yao)來(lai)自(zi)(zi)(zi)焦化、燒(shao)結、球(qiu)團(tuan)(tuan)等鐵(tie)前環(huan)節。以某長流程(cheng)的大型鋼(gang)鐵(tie)企業(970萬噸規模(mo))的廢(fei)氣污染物(wu)排(pai)放(fang)為(wei)例，該企業排(pai)放(fang)的煙(yan)/粉塵主(zhu)要(yao)來(lai)自(zi)(zi)(zi)原料系統(tong)(tong)(占(zhan)(zhan)(zhan)(zhan)19.5%)、煉(lian)鐵(tie)系統(tong)(tong)(焦化+燒(shao)結+球(qiu)團(tuan)(tuan)+煉(lian)鐵(tie)，占(zhan)(zhan)(zhan)(zhan)62.3%)和(he)煉(lian)鋼(gang)系統(tong)(tong)(占(zhan)(zhan)(zhan)(zhan)13.5%)，三者合計約占(zhan)(zhan)(zhan)(zhan)鋼(gang)鐵(tie)行業煙(yan)/粉塵總(zong)排(pai)放(fang)總(zong)量(liang)的95.3%。具體而言，SO2主(zhu)要(yao)來(lai)自(zi)(zi)(zi)球(qiu)團(tuan)(tuan)(占(zhan)(zhan)(zhan)(zhan)34.1%)、燒(shao)結(占(zhan)(zhan)(zhan)(zhan)25.1%)和(he)自(zi)(zi)(zi)備電站(zhan)(占(zhan)(zhan)(zhan)(zhan)27.5%)，約占(zhan)(zhan)(zhan)(zhan)總(zong)排(pai)放(fang)量(liang)的86.7%;NOX主(zhu)要(yao)來(lai)自(zi)(zi)(zi)燒(shao)結(占(zhan)(zhan)(zhan)(zhan)30.9%)、自(zi)(zi)(zi)備電站(zhan)(占(zhan)(zhan)(zhan)(zhan)23%)、球(qiu)團(tuan)(tuan)(占(zhan)(zhan)(zhan)(zhan)15.1%)和(he)焦化(占(zhan)(zhan)(zhan)(zhan)9.9%)，約占(zhan)(zhan)(zhan)(zhan)總(zong)排(pai)放(fang)量(liang)的78.9%。