臺州發(fa)電(dian)(dian)廠位于浙江省(sheng)臺州市椒江區椒江人(ren)海口處(chu)，1978年(nian)開(kai)工(gong)建(jian)設，分四(si)(si)期建(jian)成，總裝機容量達到l470MW。一至三期為(wei)6×135MW機組．四(si)(si)期為(wei)2x330MW帆(fan)皇臣臺州電(dian)(dian)廠淡水(shui)的年(nian)消耗(hao)量在1500萬噸以上。廢水(shui)的年(nian)排放量在800萬噸以上。為(wei)了應對(dui)淡水(shui)資(zi)源(yuan)日益緊缺(que)的局面，降低電(dian)(dian)廠發(fa)電(dian)(dian)耗(hao)水(shui)章，提(ti)高(gao)水(shui)的重(zhong)復利用(yong)率(lv)和廢水(shui)回用(yong)率(lv)，在臺卅l電(dian)(dian)廣廠內興建(jian)了“新(xin)汀臺州垃電(dian)(dian)廠廢水(shui)綜合(he)治理工(gong)程陔工(gong)程的“四(si)(si)期工(gong)業排水(shui)處(chu)理站部分。自2003年(nian)3月(yue)開(kai)工(gong)建(jian)設，2003年(nian)11月(yue)竣工(gong)投產，運(yun)行近二年(nian)來，取得了明顯的社會(hui)效(xiao)益和經(jing)濟效(xiao)益。

工藝流程

1、工藝流程確定(ding)

 廢(fei)水(shui)回(hui)用于循環(huan)冷卻水(shui)系統，需重點解決以下問題：

(1)防止某些(xie)雜(za)質離子(zi)對系(xi)統中管(guan)材(cai)的(de)腐蝕，主要(yao)控制cl-的(de)含量。

(2)防止(zhi)產生(sheng)生(sheng)物污泥，使系統中(zhong)銅管(guan)發生(sheng)堵塞或(huo)產生(sheng)污泥下的(de)腐蝕，主(zhu)要(yao)應控制COD、懸(xuan)浮物和細(xi)(xi)菌的(de)數量(liang)。由表1可見，廢水中(zhong)的(de)cl-已達到回用(yong)要(yao)求，可不(bu)必考慮。經(jing)現場調研(yan)得知，電廠定(ding)期在工業(ye)循環水中(zhong)投加殺菌劑，則再生(sheng)水中(zhong)細(xi)(xi)菌數量(liang)也不(bu)必考慮。因此，本工程(cheng)主(zhu)要(yao)處理對象是廢水的(de)pH、COD和懸(xuan)浮物。經(jing)過詳細(xi)(xi)論(lun)證(zheng)、分析，確定(ding)工藝流(liu)程(cheng)如(ru)圖1所示。

2、工(gong)藝流程(cheng)簡介

各(ge)路廢水(shui)(shui)(shui)(shui)通過(guo)格柵匯集(ji)到(dao)調(diao)節池(chi)(chi)中(zhong)(zhong)，在(zai)(zai)調(diao)節池(chi)(chi)頂(ding)設吸泥機，廢水(shui)(shui)(shui)(shui)在(zai)(zai)調(diao)節池(chi)(chi)內初步沉淀后，由(you)廢水(shui)(shui)(shui)(shui)提升(sheng)泵(beng)送人氣(qi)浮池(chi)(chi)。在(zai)(zai)氣(qi)浮池(chi)(chi)進水(shui)(shui)(shui)(shui)管投(tou)加凝聚劑，廢水(shui)(shui)(shui)(shui)中(zhong)(zhong)膠體(ti)和微小(xiao)懸浮物通過(guo)混(hun)凝反應(ying)生成小(xiao)顆(ke)粒礬(fan)花，被細微氣(qi)泡攜帶(dai)浮上(shang)水(shui)(shui)(shui)(shui)面，由(you)刮(gua)渣(zha)機刮(gua)除，而清水(shui)(shui)(shui)(shui)則由(you)氣(qi)浮池(chi)(chi)下部集(ji)水(shui)(shui)(shui)(shui)管匯集(ji)自流進人V型(xing)濾(lv)(lv)池(chi)(chi)。V型(xing)濾(lv)(lv)池(chi)(chi)濾(lv)(lv)后水(shui)(shui)(shui)(shui)進人中(zhong)(zhong)間水(shui)(shui)(shui)(shui)池(chi)(chi)，通過(guo)中(zhong)(zhong)間水(shui)(shui)(shui)(shui)泵(beng)送人清水(shui)(shui)(shui)(shui)池(chi)(chi)，在(zai)(zai)中(zhong)(zhong)間水(shui)(shui)(shui)(shui)泵(beng)出口投(tou)加Na3PO4調(diao)整清水(shui)(shui)(shui)(shui)pH值。最(zui)終產(chan)品(pin)水(shui)(shui)(shui)(shui)由(you)清水(shui)(shui)(shui)(shui)泵(beng)送至工(gong)業循(xun)環冷(leng)卻水(shui)(shui)(shui)(shui)池(chi)(chi)。

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