風(feng)(feng)(feng)(feng)(feng)機(ji)(ji)是水泥廠大的噪(zao)聲(sheng)(sheng)污(wu)染(ran)源之一。尤(you)其(qi)(qi)是熟料篦式冷卻機(ji)(ji)風(feng)(feng)(feng)(feng)(feng)機(ji)(ji)和窯(yao)尾排(pai)風(feng)(feng)(feng)(feng)(feng)機(ji)(ji)，機(ji)(ji)房(fang)降噪(zao)工(gong)程，其(qi)(qi)噪(zao)聲(sheng)(sheng)可高達100dB(A)以(yi)上。若能通(tong)過有(you)效措施(shi)減小(xiao)風(feng)(feng)(feng)(feng)(feng)機(ji)(ji)的噪(zao)聲(sheng)(sheng)，將會(hui)為水泥廠噪(zao)聲(sheng)(sheng)污(wu)染(ran)治(zhi)理(li)(li)工(gong)作帶來的效果(guo)。在(zai)風(feng)(feng)(feng)(feng)(feng)機(ji)(ji)的進出風(feng)(feng)(feng)(feng)(feng)管(guan)道(dao)處裝(zhuang)置(zhi)(zhi)消(xiao)(xiao)聲(sheng)(sheng)器(qi)(qi)。將礦渣(zha)棉(mian)、超細礦渣(zha)棉(mian)、玻(bo)璃絲以(yi)及(ji)(ji)工(gong)業毛(mao)氈等(deng)多孔(kong)消(xiao)(xiao)聲(sheng)(sheng)材料放置(zhi)(zhi)在(zai)空氣(qi)流通(tong)的管(guan)道(dao)內，并將其(qi)(qi)緊貼在(zai)管(guan)道(dao)內側，以(yi)便更好(hao)的吸(xi)收噪(zao)聲(sheng)(sheng)。根據(ju)噪(zao)聲(sheng)(sheng)的頻(pin)率決定(ding)消(xiao)(xiao)聲(sheng)(sheng)材料的厚度。高頻(pin)噪(zao)聲(sheng)(sheng)應選用較(jiao)厚的消(xiao)(xiao)聲(sheng)(sheng)材料。消(xiao)(xiao)聲(sheng)(sheng)材料厚度小(xiao)時(shi)對低頻(pin)聲(sheng)(sheng)的吸(xi)收效果(guo)較(jiao)好(hao)。根據(ju)消(xiao)(xiao)聲(sheng)(sheng)量確定(ding)消(xiao)(xiao)聲(sheng)(sheng)器(qi)(qi)長(chang)度和消(xiao)(xiao)聲(sheng)(sheng)彎(wan)頭(tou)的數(shu)量。消(xiao)(xiao)聲(sheng)(sheng)器(qi)(qi)有(you)效長(chang)度長(chang)，采用消(xiao)(xiao)聲(sheng)(sheng)彎(wan)頭(tou)時(shi)，消(xiao)(xiao)聲(sheng)(sheng)效果(guo)好(hao)，但壓力損(sun)失大，較(jiao)高的氣(qi)流速(su)度又(you)會(hui)產(chan)生新的噪(zao)聲(sheng)(sheng)。風(feng)(feng)(feng)(feng)(feng)管(guan)用阻尼材料外包扎減少(shao)通(tong)風(feng)(feng)(feng)(feng)(feng)風(feng)(feng)(feng)(feng)(feng)管(guan)傳播噪(zao)音，使用阻尼涂料粉刷風(feng)(feng)(feng)(feng)(feng)機(ji)(ji)、風(feng)(feng)(feng)(feng)(feng)管(guan)。增大增重風(feng)(feng)(feng)(feng)(feng)機(ji)(ji)、電機(ji)(ji)基礎及(ji)(ji)采用橡膠隔(ge)振墊等(deng)隔(ge)振措施(shi)，也可用密封罩密封風(feng)(feng)(feng)(feng)(feng)機(ji)(ji)等(deng)。風(feng)(feng)(feng)(feng)(feng)機(ji)(ji)房(fang)屋采用吸(xi)聲(sheng)(sheng)的墻體(ti)，安慶降噪(zao)工(gong)程，如多孔(kong)混凝土砌塊、內貼吸(xi)聲(sheng)(sheng)材料，或(huo)采用雙(shuang)墻隔(ge)聲(sheng)(sheng)墻處理(li)(li)等(deng)。

隔音屏障噪(zao)(zao)聲(sheng)(sheng)(sheng)控(kong)制的(de)(de)標(biao)準(zhun)，是在(zai)各種條(tiao)件下和(he)為各種目的(de)(de)判斷允許(xu)噪(zao)(zao)聲(sheng)(sheng)(sheng)級的(de)(de)標(biao)準(zhun)。評價標(biao)準(zhun)，可(ke)以是人對(dui)振(zhen)動的(de)(de)容忍程度，暴(bao)露于(yu)強噪(zao)(zao)聲(sheng)(sheng)(sheng)下對(dui)于(yu)聽(ting)力損傷的(de)(de)危險性，噪(zao)(zao)聲(sheng)(sheng)(sheng)下的(de)(de)可(ke)靠(kao)語(yu)言通訊，各種建筑物(wu)的(de)(de)允許(xu)噪(zao)(zao)聲(sheng)(sheng)(sheng)級，居民對(dui)于(yu)噪(zao)(zao)聲(sheng)(sheng)(sheng)的(de)(de)反應等(deng)(deng)等(deng)(deng)。固(gu)體(ti)聲(sheng)(sheng)(sheng)能(neng)傳(chuan)播(bo)到很(hen)遠(yuan)的(de)(de)地方(fang)，消(xiao)音降噪(zao)(zao)工程施(shi)(shi)工，即隨(sui)著距(ju)離的(de)(de)增(zeng)加(jia)(jia)衰(shuai)減很(hen)小。對(dui)于(yu)因基礎向(xiang)(xiang)外傳(chuan)遞振(zhen)動而產生的(de)(de)固(gu)體(ti)聲(sheng)(sheng)(sheng)可(ke)采取隔振(zhen)方(fang)法加(jia)(jia)以控(kong)制，而對(dui)于(yu)機組表面(mian)振(zhen)動向(xiang)(xiang)外輻射的(de)(de)噪(zao)(zao)聲(sheng)(sheng)(sheng)可(ke)以利(li)用(yong)(yong)阻尼(ni)減振(zhen)的(de)(de)辦(ban)法加(jia)(jia)以控(kong)制。降噪(zao)(zao)處理措施(shi)(shi)：吸聲(sheng)(sheng)(sheng)：使用(yong)(yong)多孔材料如玻(bo)璃棉、三聚qing胺、碳纖維等(deng)(deng)吸聲(sheng)(sheng)(sheng)材料，裝飾在(zai)室內墻壁、空間上部等(deng)(deng)，或(huo)者制成(cheng)吸聲(sheng)(sheng)(sheng)體(ti)。

按噪(zao)(zao)(zao)聲(sheng)(sheng)源的(de)物(wu)理特(te)性分類①氣(qi)體(ti)動(dong)(dong)力噪(zao)(zao)(zao)聲(sheng)(sheng)：葉片(pian)高速旋(xuan)轉(zhuan)(zhuan)或高速氣(qi)流通過葉片(pian)，屋面設(she)備降噪(zao)(zao)(zao)工程，會使葉片(pian)兩(liang)側的(de)空氣(qi)發(fa)生壓(ya)力突變(bian)(bian)(bian)，激發(fa)聲(sheng)(sheng)波，如通風機、鼓風機、壓(ya)縮機、發(fa)動(dong)(dong)機迫使氣(qi)體(ti)通過進、排(pai)氣(qi)口時發(fa)出的(de)聲(sheng)(sheng)音即為氣(qi)體(ti)動(dong)(dong)力噪(zao)(zao)(zao)聲(sheng)(sheng)。②機械(xie)噪(zao)(zao)(zao)聲(sheng)(sheng)：物(wu)體(ti)間(jian)的(de)撞擊、摩擦、交(jiao)變(bian)(bian)(bian)的(de)機械(xie)力作(zuo)用下的(de)金屬板，旋(xuan)轉(zhuan)(zhuan)的(de)動(dong)(dong)力不(bu)平(ping)衡，以(yi)及運轉(zhuan)(zhuan)的(de)機械(xie)零件軸承、齒輪等都(dou)會產生機械(xie)性噪(zao)(zao)(zao)聲(sheng)(sheng)。 ③電磁性噪(zao)(zao)(zao)聲(sheng)(sheng)：由于電機等的(de)交(jiao)變(bian)(bian)(bian)力相(xiang)(xiang)互作(zuo)用產生的(de)聲(sheng)(sheng)音。如電流和(he)磁場的(de)相(xiang)(xiang)互作(zuo)用產生的(de)噪(zao)(zao)(zao)聲(sheng)(sheng)，發(fa)動(dong)(dong)機、變(bian)(bian)(bian)壓(ya)器的(de)噪(zao)(zao)(zao)聲(sheng)(sheng)均屬此類。