跟著食(shi)(shi)(shi)物(wu)(wu)(wu)工(gong)(gong)業(ye)(ye)的(de)發展，食(shi)(shi)(shi)物(wu)(wu)(wu)廢(fei)(fei)水(shui)(shui)的(de)處(chu)(chu)理(li)(li)也迫在眉睫。由于(yu)食(shi)(shi)(shi)物(wu)(wu)(wu)工(gong)(gong)業(ye)(ye)觸及(ji)淀粉(fen)、糖、飲料(liao)、罐頭(tou)、肉類、水(shui)(shui)產品(pin)、釀酒(jiu)、米面(mian)制(zhi)品(pin)、乳(ru)制(zhi)品(pin)、大豆(dou)制(zhi)品(pin)、發酵調味品(pin)等(deng)首要食(shi)(shi)(shi)物(wu)(wu)(wu)工(gong)(gong)業(ye)(ye)，這些廢(fei)(fei)水(shui)(shui)中(zhong)的(de)首要污染(ran)物(wu)(wu)(wu)有(you)：懸(xuan)浮固(gu)體(ti)(ti)物(wu)(wu)(wu)質、油(you)(you)脂(zhi)、蛋白質、淀粉(fen)、膠體(ti)(ti)物(wu)(wu)(wu)質等(deng)，糖、酸(suan)、堿、鹽、沉(chen)積(ji)物(wu)(wu)(wu)等(deng)雜(za)質溶于(yu)廢(fei)(fei)水(shui)(shui)中(zhong)，并可能有(you)細菌。食(shi)(shi)(shi)物(wu)(wu)(wu)廢(fei)(fei)水(shui)(shui)的(de)首要特點是(shi)COD、BOD、SS和油(you)(you)脂(zhi)含量高(gao)，有(you)機(ji)物(wu)(wu)(wu)和懸(xuan)浮物(wu)(wu)(wu)含量高(gao)，易腐(fu)敗，屬于(yu)高(gao)濃度(du)有(you)機(ji)廢(fei)(fei)水(shui)(shui)。這些廢(fei)(fei)水(shui)(shui)假如處(chu)(chu)理(li)(li)不當直接排放，會使水(shui)(shui)體(ti)(ti)富營養化，導(dao)致水(shui)(shui)生生物(wu)(wu)(wu)逝世，惡化水(shui)(shui)體(ti)(ti)，對環境污染(ran)造成極大危害。聚(ju)丙(bing)烯(xi)酰(xian)胺除了在工(gong)(gong)業(ye)(ye)廢(fei)(fei)水(shui)(shui)處(chu)(chu)理(li)(li)中(zhong)的(de)作用(yong)(yong)(yong)很好外(wai)，在食(shi)(shi)(shi)物(wu)(wu)(wu)廢(fei)(fei)水(shui)(shui)處(chu)(chu)理(li)(li)中(zhong)的(de)作用(yong)(yong)(yong)也很好。那么哪些食(shi)(shi)(shi)物(wu)(wu)(wu)廢(fei)(fei)水(shui)(shui)處(chu)(chu)理(li)(li)流程用(yong)(yong)(yong)到聚(ju)丙(bing)烯(xi)酰(xian)胺？食(shi)(shi)(shi)物(wu)(wu)(wu)廢(fei)(fei)水(shui)(shui)處(chu)(chu)理(li)(li)用(yong)(yong)(yong)聚(ju)丙(bing)烯(xi)酰(xian)胺的(de)作用(yong)(yong)(yong)是(shi)什么？下面(mian)中(zhong)北化工(gong)(gong)具體(ti)(ti)為我們回答這些問題。

哪些食(shi)物(wu)廢水(shui)處理流程用到(dao)聚丙烯酰胺？
在(zai)食物廢水處理(li)過程中，聚(ju)丙烯酰胺的作用(yong)首要用(yong)于(yu)兩(liang)個階段(duan)：
1.在氣浮或沉(chen)積池(chi)中，通常選(xuan)用聚合氯化鋁、聚合硫酸鐵和聚丙烯酰(xian)胺對食(shi)物廢水進行(xing)絮(xu)凝沉(chen)積。
2.選用陽離子(zi)(zi)聚丙烯(xi)酰(xian)胺作為污泥(ni)脫水劑對廢水進(jin)行后處理。單(dan)個污泥(ni)脫水也可(ke)選用陰離子(zi)(zi)聚丙烯(xi)酰(xian)胺，應根據實(shi)際(ji)情況進(jin)一步(bu)試驗確(que)定(ding)。

食物廢水(shui)處理用聚丙烯酰胺的作用是什(shen)么？
聚(ju)丙烯酰(xian)胺(an)分(fen)子鏈中(zhong)(zhong)含有一定數量的(de)(de)極性基團，經過電荷中(zhong)(zhong)和作用(yong)，可以吸附水(shui)中(zhong)(zhong)的(de)(de)懸(xuan)浮固體顆粒(li)，橋(qiao)接粒(li)子或將顆粒(li)凝聚(ju)成大的(de)(de)絮凝物，從而加(jia)速(su)食物廢水(shui)中(zhong)(zhong)懸(xuan)浮顆粒(li)的(de)(de)沉(chen)降，加(jia)速(su)溶液弄清(qing)，進步過濾作用(yong)。食物加(jia)工廢水(shui)COD高，懸(xuan)浮物含量高于其他行業。因此，使(shi)用(yong)聚(ju)丙烯酰(xian)胺(an)可以很(hen)好(hao)地去除廢水(shui)中(zhong)(zhong)的(de)(de)雜質。