廢堿(jian)處(chu)理壹(yi)般是(shi)采用(yong)酸(suan)性(xing)物質進(jin)行中(zhong)和，並回(hui)收(shou)其(qi)生成(cheng)的(de)有(you)用(yong)物質。廢(fei)堿(jian)處(chu)理的(de)中(zhong)和法有(you)：
　　1、投(tou)酸(suan)中(zhong)和法
　　投(tou)酸(suan)中(zhong)和法是(shi)采(cai)用(yong)廢(fei)強(qiang)酸(suan)或酸性廢(fei)水(shui)進(jin)行中(zhong)和處(chu)理，所(suo)用(yong)設(she)備(bei)和中(zhong)和程(cheng)序(xu)與(yu)酸性(xing)廢(fei)水中(zhong)和法相(xiang)同(tong)。
　　2、煙(yan)氣中(zhong)和法
　　煙(yan)氣中(zhong)和法是(shi)利(li)用(yong)鍋(guo)爐(lu)煙(yan)道(dao)氣中(zhong)的二氧化(hua)碳與二(er)氧(yang)化(hua)硫(liu)通(tong)過(guo)泡(pao)沫(mo)吸(xi)收(shou)塔將(jiang)溶(rong)於水(shui)中(zhong)形成(cheng)的(de)酸性水(shui)中(zhong)和堿性(xing)廢(fei)水(shui)。或是將(jiang)堿(jian)性(xing)廢水(shui)通(tong)人(ren)煙(yan)道(dao)氣中(zhong)利用(yong)堿(jian)性(xing)廢(fei)水(shui)作為(wei)除(chu)塵(chen)的噴淋(lin)水，兩(liang)者均可(ke)得到(dao)良(liang)好(hao)的處(chu)理效(xiao)果。但(dan)處(chu)理後廢(fei)水(shui)中(zhong)的懸(xuan)浮(fu)物含(han)量(liang)增(zeng)加，硫(liu)化(hua)物、耗氧(yang)量(liang)和色度也都(dou)有(you)所增(zeng)加，此(ci)外還需對廢(fei)水進(jin)行補(bu)充處(chu)理。