汙泥加鈣幹化的成本體現在什麼地方?

  (1)減量化：xiangduiyuwunideqitachulifangfa，wunidejixietuoshuijianliangshifeichangjingjiyouxiaodeyizhongfangfa。kecaiyongbutongdejixietuoshuifangshi，shichunihangulvtigao，bianyuhouxuchuli。

  (2)無害化
、穩定化：堿性穩定化是在汙泥中加入石灰或水泥窯灰等堿性物質，使汙泥pH>12並保持一段時間
，利用強堿性和石灰放出的大量熱能殺滅病原體、jiangdiechouhedunhuazhongjinshu，chulihouwunikezhijieshiyongyunongtian。jianxingwendinghuadelianggezhuyaochulifangfa
，yishizaijianxingwendinghoutongguojixiefanduihuoqitafangfashiwunikuaisuganzao
，yishizaihunhejianxingwuliaohoujinxingduifei。

  (3)熱幹化：熱幹化是利用熱能將汙泥烘幹。幹化後的汙泥呈顆粒或粉末狀，體積僅為原來的1/5～1/4，而且由於含水率在10%以yi下xia微wei生sheng物wu活huo性xing完wan全quan受shou到dao抑yi製zhi而er避bi免mian了le產chan品pin發fa黴mei發fa臭chou
，利li於yu儲chu藏zang和he運yun輸shu。熱re幹gan化hua過guo程cheng的de高gao溫wen滅mie菌jun作zuo用yong很hen徹che底di，產chan品pin可ke完wan全quan達da到dao衛wei生sheng指zhi標biao並bing使shi汙wu泥ni性xing能neng全quan麵mian改gai善shan，產chan品pin可ke作zuo替ti代dai能neng源yuan也ye可ke土tu地di利li用yong。泰tai達da熱re幹gan化hua設she備bei自zi動dong化hua程cheng度du高gao、安全性能好、熱轉化效率較高。

  (4)焚燒：tongguofenshaokeliyongwunizhongfengfudeshengwunenglaifadianbingshiwunidadaozuidachengdudejianrong。jinnianlaifenshaofayouyucaiyongleheshideyuchuligongyihefenshaoshouduan，dadaolewunirenengdezichi，bingnengmanzuyuelaiyueyangedehuanjingyaoqiuhechongfendichulibushiyiyuziyuanhualiyongdebufenwuni。youyuqizaieliedetianqitiaojianxiabuxucunchushebei
，duiyudachengshiyinyuanlitianmaichangzaochengyunshufeiyonggaodechanghe，shiyongfenshaofachuzhishijingjiyouxiaode。fenshaoguochengzhongsuoyoudebingjun、病原體均被徹底殺滅、有you毒du有you害hai的de有you機ji殘can餘yu物wu被bei氧yang化hua分fen解jie。焚fen燒shao灰hui可ke用yong作zuo生sheng產chan水shui泥ni的de原yuan料liao
，使shi重zhong金jin屬shu被bei固gu定ding在zai混hun凝ning土tu中zhong而er避bi免mian其qi重zhong新xin進jin入ru環huan境jing，不bu足zu之zhi處chu在zai於yu焚fen燒shao過guo程cheng中zhong會hui產chan生sheng二er惡e英ying等deng空kong氣qi汙wu染ran物wu。目mu前qian應ying用yong最zui廣guang的de焚fen燒shao設she備bei是shi流liu化hua床chuang焚fen燒shao爐lu
，當dang汙wu泥ni的de含han水shui率lv達da到dao38%以上時就可不需要輔助燃料直接燃燒，汙泥焚燒在日本和歐美較為普遍，在歐盟，1992年汙泥焚燒的比例為11%，比1984年增加了38%;日本有61%的汙泥采用焚燒處理。