UASB-CASS-BAF工藝用于屠宰廢水的中水回用

摘要: 湖南(nan)省某肉食(shi)加(jia)(jia)工(gong)(gong)(gong)(gong)中(zhong)心屠(tu)宰(zai)廠日屠(tu)宰(zai)量(liang)為(wei)2 800頭生豬。所排(pai)(pai)放(fang)廢(fei)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)中(zhong)含(han)有大量(liang)血(xue)污(wu)、毛皮、碎(sui) 肉、內(nei)臟雜(za)質(zhi)、未消(xiao)化食(shi)物(wu)以(yi)及糞便等污(wu)染(ran)(ran)物(wu)，懸(xuan)浮物(wu)濃度高.水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)呈現粉紅色并帶有明顯腥臭味。該(gai)加(jia)(jia)工(gong)(gong)(gong)(gong)中(zhong)心位于湘江重(zhong)點水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)污(wu)染(ran)(ran)控制流域(yu).對排(pai)(pai)放(fang)的廢(fei)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)質(zhi)要(yao)求嚴(yan)格。為(wei)了(le)節(jie)約水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)資源，確保湘江水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)源安全，加(jia)(jia)工(gong)(gong)(gong)(gong)中(zhong)心確定采用(yong)中(zhong)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)回用(yong)工(gong)(gong)(gong)(gong)藝(yi)以(yi)實現廢(fei)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)零(ling)排(pai)(pai)放(fang)。 1.水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)質(zhi)與水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)量(liang) 1.1 廢(fei)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)量(liang) 該(gai)加(jia)(jia)工(gong)(gong)(gong)(gong)中(zhong)心屠(tu)宰(zai)及肉制品加(jia)(jia)工(gong)(gong)(gong)(gong)過程每(mei)天排(pai)(pai)放(fang)廢(fei)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)164m3.另外廠區每(mei)天排(pai)(pai)放(fang)生活廢(fei)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)55m，本項目(mu)設計處(chu)理量(liang)2000m3/d 廢(fei)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)處(chu)理系統每(mei)天運行時(shi)間按24h計算.則每(mei)小(xiao)時(shi)的設計處(chu)理水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)量(liang)為(wei)85m。 1.2廢(fei)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)質(zhi) 該(gai)廢(fei)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)所含(han)污(wu)染(ran)(ran)物(wu)主要(yao)為(wei)呈溶解(jie)、膠(jiao)體(ti)和懸(xuan)浮等物(wu)理形態的有機物(wu)質(zhi)，易(yi)于生物(wu)降解(jie)。具體(ti)廢(fei)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)質(zhi)見表1。 考慮(lv)到處(chu)理后的廢(fei)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)需(xu)(xu)要(yao)作為(wei)中(zhong)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)回用(yong).出水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)質(zhi)要(yao)求較《肉類加(jia)(jia)工(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)業污(wu)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)排(pai)(pai)放(fang)標準(zhun)》(GB 13457--1992)嚴(yan)格，需(xu)(xu)要(yao)達(da)到《城市污(wu)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)再(zai)生利用(yong)一城市雜(za)用(yong)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)質(zhi)》要(yao)求的中(zhong)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)回用(yong)標準(zhun)。出水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)具體(ti)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)(shui)質(zhi)指標見表2。 更多內(nei)容請見附件(jian)：

湖南省某(mou)肉食(shi)(shi)加工(gong)中(zhong)心屠宰(zai)廠日屠宰(zai)量(liang)為2 800頭(tou)生豬。所排放廢(fei)水(shui)中(zhong)含有大量(liang)血污(wu)、毛(mao)皮、碎 肉、內臟雜質(zhi)、未消化食(shi)(shi)物以及(ji)糞便等(deng)污(wu)染(ran)物，懸浮(fu)物濃(nong)度高.水(shui)呈現粉紅色并帶有明顯腥臭味。該(gai)加工(gong)中(zhong)心位于湘(xiang)江(jiang)重(zhong)點(dian)水(shui)污(wu)染(ran)控(kong)制流域.對排放的廢(fei)水(shui)水(shui)質(zhi)要求嚴格。為了節約水(shui)資源(yuan)，確(que)保湘(xiang)江(jiang)水(shui)源(yuan)安(an)全，加工(gong)中(zhong)心確(que)定(ding)采(cai)用中(zhong)水(shui)回(hui)用工(gong)藝以實現廢(fei)水(shui)零排放。

1.水質與(yu)水量

1.1 廢(fei)水水量

該加工中(zhong)心屠(tu)宰及肉(rou)制品(pin)加工過程每(mei)天排放廢水(shui)(shui)164m3.另外廠區(qu)每(mei)天排放生活廢水(shui)(shui)55m，本(ben)項目設(she)(she)計處理量(liang)2000m3/d 廢水(shui)(shui)處理系(xi)統每(mei)天運行時間按24h計算.則每(mei)小時的(de)設(she)(she)計處理水(shui)(shui)量(liang)為(wei)85m。

1.2廢水水質

該廢水(shui)所含污染物主要(yao)為(wei)呈溶(rong)解、膠體和懸浮等(deng)物理形態的有(you)機物質，易于生物降解。具體廢水(shui)水(shui)質見(jian)表1。

考(kao)慮到處理(li)后的廢水(shui)(shui)(shui)需要(yao)作為中水(shui)(shui)(shui)回用(yong)(yong).出水(shui)(shui)(shui)水(shui)(shui)(shui)質要(yao)求較《肉類加(jia)工工業(ye)污(wu)水(shui)(shui)(shui)排(pai)放標(biao)準》(GB 13457--1992)嚴格(ge)，需要(yao)達(da)到《城市污(wu)水(shui)(shui)(shui)再生利用(yong)(yong)一城市雜用(yong)(yong)水(shui)(shui)(shui)水(shui)(shui)(shui)質》要(yao)求的中水(shui)(shui)(shui)回用(yong)(yong)標(biao)準。出水(shui)(shui)(shui)具體水(shui)(shui)(shui)質指標(biao)見表2。

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