1、工程概況

紅沿(yan)河(he)核(he)電(dian)(dian)廠(chang)4×1000MW機組(zu)地處東北沿(yan)海,廠(chang)區三面(mian)環海，一(yi)面(mian)與陸地接壤。由于地區淡水(shui)(shui)(shui)(shui)資源(yuan)短缺，××核(he)電(dian)(dian)廠(chang)在(zai)機組(zu)運行期間所用(yong)(yong)(yong)淡水(shui)(shui)(shui)(shui)主要通過海水(shui)(shui)(shui)(shui)淡化系(xi)統(tong)將(jiang)海水(shui)(shui)(shui)(shui)處理為(wei)淡水(shui)(shui)(shui)(shui)，供廠(chang)區內(nei)的(de)生(sheng)(sheng)(sheng)產(chan)用(yong)(yong)(yong)水(shui)(shui)(shui)(shui)、生(sheng)(sheng)(sheng)活用(yong)(yong)(yong)水(shui)(shui)(shui)(shui)及(ji)消(xiao)防(fang)用(yong)(yong)(yong)水(shui)(shui)(shui)(shui)。海水(shui)(shui)(shui)(shui)淡化系(xi)統(tong)平均日(ri)產(chan)水(shui)(shui)(shui)(shui)量(liang)(liang)約15000m3，其中110 m3/h為(wei)工(gong)業水(shui)(shui)(shui)(shui)需求量(liang)(liang)，其它淡水(shui)(shui)(shui)(shui)分(fen)為(wei)兩(liang)部(bu)分(fen)，分(fen)別經(jing)過二級反(fan)滲(shen)透膜供給除鹽水(shui)(shui)(shui)(shui)生(sheng)(sheng)(sheng)產(chan)系(xi)統(tong)和生(sheng)(sheng)(sheng)活飲用(yong)(yong)(yong)水(shui)(shui)(shui)(shui)系(xi)統(tong)，為(wei)除鹽水(shui)(shui)(shui)(shui)生(sheng)(sheng)(sheng)產(chan)系(xi)統(tong)提供410m3/h的(de)用(yong)(yong)(yong)水(shui)(shui)(shui)(shui)量(liang)(liang)，為(wei)生(sheng)(sheng)(sheng)活飲用(yong)(yong)(yong)水(shui)(shui)(shui)(shui)系(xi)統(tong)提供80m3/h的(de)用(yong)(yong)(yong)水(shui)(shui)(shui)(shui)量(liang)(liang)。

2、水源與水質

本工程的(de)前處理海(hai)水(shui)(shui)淡化的(de)設計(ji)水(shui)(shui)源為海(hai)水(shui)(shui)；

除鹽(yan)水(shui)(shui)(shui)生(sheng)產(chan)系(xi)統出(chu)水(shui)(shui)(shui)質量 電(dian)導率 ≤ 0.2?S/cm（25℃）； 二氧化(hua)硅 ≤ 20?g/L； 鈉(na) ≤ 2μg/L（期(qi)望值(zhi)） ≤ 5μg/L (限定值(zhi))； 氯化(hua)物和氟化(hua)物：≤10μg/L； 懸浮固體(ti) ≤ 50?g/L（經煅燒(shao)后）； 硫酸根含(han)量 ≤ 10μg/L； pH (25℃)：70.5（對(dui)于(yu)SER水(shui)(shui)(shui)箱供(gong)水(shui)(shui)(shui)，其pH須通(tong)過(guo)加氨調整到9）。

3. 除鹽水生產系統工藝流程及系統出力

來自海水(shui)(shui)(shui)淡化(hua)(hua)系統(tong)(tong)(tong)(tong)的產(chan)(chan)品水(shui)(shui)(shui)經除(chu)(chu)(chu)(chu)(chu)鹽(yan)水(shui)(shui)(shui)生(sheng)產(chan)(chan)系統(tong)(tong)(tong)(tong)輸水(shui)(shui)(shui)泵升壓(ya)(ya)后(hou)進入逆(ni)流(liu)再生(sheng)陽(yang)離(li)(li)子交換(huan)(huan)器去除(chu)(chu)(chu)(chu)(chu)水(shui)(shui)(shui)中(zhong)的陽(yang)離(li)(li)子，再經過逆(ni)流(liu)再生(sheng)陰(yin)離(li)(li)子交換(huan)(huan)器去除(chu)(chu)(chu)(chu)(chu)陰(yin)離(li)(li)子，再經過混(hun)(hun)合(he)離(li)(li)子交換(huan)(huan)器進行二(er)級除(chu)(chu)(chu)(chu)(chu)鹽(yan)，生(sheng)產(chan)(chan)出合(he)格的除(chu)(chu)(chu)(chu)(chu)鹽(yan)水(shui)(shui)(shui)儲存在除(chu)(chu)(chu)(chu)(chu)鹽(yan)水(shui)(shui)(shui)箱，供核島、常規島和廠區(qu)用(yong)水(shui)(shui)(shui)。確定(ding)除(chu)(chu)(chu)(chu)(chu)鹽(yan)水(shui)(shui)(shui)生(sheng)產(chan)(chan)系統(tong)(tong)(tong)(tong)的工藝流(liu)程為： 海水(shui)(shui)(shui)淡化(hua)(hua)系統(tong)(tong)(tong)(tong)來水(shui)(shui)(shui)->除(chu)(chu)(chu)(chu)(chu)鹽(yan)水(shui)(shui)(shui)系統(tong)(tong)(tong)(tong)供水(shui)(shui)(shui)泵->無頂壓(ya)(ya)逆(ni)流(liu)再生(sheng)陽(yang)離(li)(li)子交換(huan)(huan)器->無頂壓(ya)(ya)逆(ni)流(liu)再生(sheng)陰(yin)離(li)(li)子交換(huan)(huan)器->混(hun)(hun)合(he)離(li)(li)子交換(huan)(huan)器->SER/SED除(chu)(chu)(chu)(chu)(chu)鹽(yan)水(shui)(shui)(shui)箱。 除(chu)(chu)(chu)(chu)(chu)鹽(yan)水(shui)(shui)(shui)生(sheng)產(chan)(chan)系統(tong)(tong)(tong)(tong)包(bao)括從(cong)除(chu)(chu)(chu)(chu)(chu)鹽(yan)水(shui)(shui)(shui)系統(tong)(tong)(tong)(tong)供水(shui)(shui)(shui)泵至混(hun)(hun)合(he)離(li)(li)子交換(huan)(huan)器的設(she)備(bei)（包(bao)括加氨單(dan)元(yuan)），混(hun)(hun)床產(chan)(chan)水(shui)(shui)(shui)送至SER/SED除(chu)(chu)(chu)(chu)(chu)鹽(yan)水(shui)(shui)(shui)箱。

除鹽水生產(chan)系(xi)統總(zong)有(you)效出(chu)(chu)力：410m3/h。由(you)3臺陽離(li)子(zi)(zi)交(jiao)換器(qi)(qi)、3臺陰(yin)離(li)子(zi)(zi)交(jiao)換器(qi)(qi)和(he)3臺混合離(li)子(zi)(zi)交(jiao)換器(qi)(qi)組成。陽離(li)子(zi)(zi)交(jiao)換器(qi)(qi)和(he)陰(yin)離(li)子(zi)(zi)交(jiao)換器(qi)(qi)采(cai)用(yong)(yong)單元(yuan)制連接(jie)。每(mei)列出(chu)(chu)力137 m3/h。三(san)臺混床采(cai)用(yong)(yong)母(mu)管制連接(jie)，可滿足系(xi)統410m3/h出(chu)(chu)力的要求。

4.除鹽水生產系統主要技術參數

除鹽(yan)(yan)(yan)水(shui)(shui)(shui)生產系統(tong)的(de)功能是將來自海水(shui)(shui)(shui)淡化二(er)級反滲(shen)透的(de)產品水(shui)(shui)(shui)進一步通過陽(yang)、陰離(li)子(zi)交換器一級除鹽(yan)(yan)(yan)；再經(jing)過混合離(li)子(zi)交換器進行二(er)級除鹽(yan)(yan)(yan)，從而生產出(chu)合格的(de)除鹽(yan)(yan)(yan)水(shui)(shui)(shui)儲存(cun)在除鹽(yan)(yan)(yan)水(shui)(shui)(shui)箱(xiang)，供核(he)島、常規島和廠區用水(shui)(shui)(shui)。除鹽(yan)(yan)(yan)水(shui)(shui)(shui)處(chu)理設備必須(xu)能夠滿足系統(tong)間(jian)斷運行，間(jian)歇啟停(ting)，頻繁啟動的(de)要求(qiu)。

系統設備的連接和運行(xing)方式 陽(yang)、陰離子(zi)交(jiao)換器采用串聯(lian)布置，共設三列，每(mei)列陽(yang)、陰離子(zi)交(jiao)換器同時運行(xing)、同時再生。一(yi)級除(chu)鹽系統出水進(jin)一(yi)步經混合離子(zi)交(jiao)換器處(chu)理，混床連接為母(mu)管制(zhi)。 

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