摘要：由于一期濾池(chi)長期停止使(shi)用后恢復(fu)生產，故需要對其過濾系統(tong)(tong)、真空系統(tong)(tong)、控(kong)制系統(tong)(tong)及(ji)其它相關設施進行改造，以(yi)達到濾池(chi)能正(zheng)常過濾及(ji)沖(chong)洗，保證過濾水(shui)(shui)達到水(shui)(shui)量、水(shui)(shui)質要求。在運行1個多月來(lai)，取得了滿意的效果。

關健字：濾(lv)(lv)池改造，虹(hong)吸濾(lv)(lv)池，濾(lv)(lv)料，真(zhen)空系統(tong)，控制系統(tong)

1前言

清(qing)遠市(shi)七星崗水廠共建(jian)(jian)有一、二(er)期凈(jing)(jing)水系(xi)統(tong)(tong)(tong)工(gong)(gong)程(cheng)(cheng)(cheng)，一期工(gong)(gong)程(cheng)(cheng)(cheng)設計處理能力為(wei)(wei)6萬(wan)噸(dun)/日(ri)(ri)(ri)，二(er)期工(gong)(gong)程(cheng)(cheng)(cheng)設計處理能力為(wei)(wei)10萬(wan)噸(dun)/日(ri)(ri)(ri)。在二(er)期工(gong)(gong)程(cheng)(cheng)(cheng)1994年(nian)建(jian)(jian)成使用后(hou)，由于二(er)期工(gong)(gong)程(cheng)(cheng)(cheng)的(de)(de)日(ri)(ri)(ri)凈(jing)(jing)水能力已經(jing)滿足當時城市(shi)用水量(liang)需要，故一期工(gong)(gong)程(cheng)(cheng)(cheng)停(ting)止使用至今，隨(sui)著(zhu)城市(shi)經(jing)濟的(de)(de)不斷(duan)發展，市(shi)區(qu)及周邊鄉(xiang)鎮的(de)(de)企業及人口不斷(duan)增多，對(dui)供(gong)水量(liang)的(de)(de)要求也不斷(duan)增大。據統(tong)(tong)(tong)計，2005年(nian)清(qing)遠市(shi)城區(qu)全年(nian)最高(gao)日(ri)(ri)(ri)供(gong)水已達(da)12噸(dun)/日(ri)(ri)(ri)，二(er)期凈(jing)(jing)水系(xi)統(tong)(tong)(tong)常處于超負(fu)荷運(yun)行，為(wei)(wei)了(le)保證出(chu)廠水的(de)(de)水質和水量(liang)，于2005年(nian)11月初(chu)對(dui)一期工(gong)(gong)程(cheng)(cheng)(cheng)的(de)(de)反應池(chi)、斜管(guan)(guan)沉(chen)淀池(chi)、虹吸(xi)濾池(chi)進行了(le)大修和技(ji)術改造(zao)(zao)，并增建(jian)(jian)了(le)斜管(guan)(guan)沉(chen)沙池(chi)。并于同年(nian)12月底恢復運(yun)行。在此主要介紹的(de)(de)是虹吸(xi)濾池(chi)的(de)(de)改造(zao)(zao)。

2濾池改(gai)造前的狀況

2.1概況

一期凈(jing)水系統工程(cheng)的濾池形式采用(yong)虹吸(xi)濾池，于1989年建成使用(yong)，1994年停止使用(yong)，至今(jin)已停用(yong)10年之久，進水鋼管(guan)、閘(zha)閥(fa)、進水虹吸(xi)管(guan)和(he)排水虹吸(xi)管(guan)部分已出現銹(xiu)蝕(shi)、鋼管(guan)混凝(ning)土支(zhi)墩出現裂縫、濾料積滿(man)污泥(ni)并長滿(man)雜草。需要(yao)對濾池進行改造(zao)才(cai)能恢復運行。

濾(lv)沙層經過(guo)長時(shi)間運行(xing)，出現(xian)磨損破碎(sui)，濾(lv)沙變小，反沖(chong)洗有(you)跑沙現(xian)象，濾(lv)沙層變薄，局(ju)部(bu)位(wei)置有(you)板結現(xian)象；部(bu)分(fen)濾(lv)池出現(xian)濾(lv)沙層和承托層錯層現(xian)象、濾(lv)磚配水(shui)孔部(bu)分(fen)堵塞(sai)，導致濾(lv)后水(shui)水(shui)質變差，產量達(da)不到(dao)設計(ji)技術要(yao)求。

進水(shui)(shui)和排水(shui)(shui)虹吸(xi)(xi)管(guan)(guan)的(de)輔助虹吸(xi)(xi)管(guan)(guan)道銹蝕(shi)(shi)嚴(yan)重(zhong)，部分水(shui)(shui)射器出(chu)現(xian)(xian)腐爛(lan)穿孔現(xian)(xian)象(xiang)，使部分進水(shui)(shui)和排水(shui)(shui)虹吸(xi)(xi)管(guan)(guan)不(bu)能工作(zuo)；計時水(shui)(shui)箱(xiang)的(de)排水(shui)(shui)虹吸(xi)(xi)破壞管(guan)(guan)銹蝕(shi)(shi)嚴(yan)重(zhong)，管(guan)(guan)徑變小和部分出(chu)現(xian)(xian)堵塞，導致反(fan)(fan)沖洗時間(jian)延長或反(fan)(fan)沖洗不(bu)能停(ting)止的(de)現(xian)(xian)象(xiang)，嚴(yan)重(zhong)影響(xiang)產量和浪(lang)費(fei)用水(shui)(shui)。

針(zhen)對上述存在的問題(ti)，對濾沙層(ceng)、承托層(ceng)重新進(jin)行篩分(fen)和(he)補(bu)充濾沙；因排水虹吸(xi)管水射器安(an)裝在虹吸(xi)管內(nei)，更換成(cheng)本高、維(wei)修困難，現改造為由(you)可編程序控制器（PLC）進(jin)行自動(dong)控制，可自由(you)設(she)定沖(chong)洗周期和(he)沖(chong)洗時間，靈活方便，節約自用水，降低生產成(cheng)本。

2.2設(she)計技(ji)術參數(shu)

濾(lv)池一共兩組(zu)，每組(zu)分16格(ge)，每格(ge)凈尺寸為(wei)(wei)3.5m×2.8m，其中(zhong)過(guo)濾(lv)面(mian)積為(wei)(wei)3.5m×2.15m，8格(ge)兩行對稱布置，中(zhong)間為(wei)(wei)沖(chong)(chong)洗水(shui)箱及(ji)水(shui)槽，濾(lv)池總(zong)高度為(wei)(wei)5.2m，采(cai)(cai)用單水(shui)反沖(chong)(chong)洗方(fang)式。設計濾(lv)速：10m/h，沖(chong)(chong)冼強度：15L/(s•m2)，沖(chong)(chong)洗水(shui)頭：1.5m，采(cai)(cai)用粗沙(sha)石(shi)粒(li)為(wei)(wei)承托層，由上至下其粒(li)徑(jing)及(ji)厚(hou)度分別為(wei)(wei)：1.1mm~2mm厚(hou)20mm、2mm~4mm厚(hou)50mm、4mm~8mm厚(hou)100mm、8mm~12mm厚(hou)100mm，濾(lv)料(liao)采(cai)(cai)用石(shi)英砂單層濾(lv)料(liao)，粒(li)徑(jing)為(wei)(wei)0.7mm~1.1mm厚(hou)800mm。

2.3自(zi)動沖冼及恢復過濾(lv)工作原理

濾(lv)(lv)(lv)池(chi)在過(guo)濾(lv)(lv)(lv)過(guo)程中，濾(lv)(lv)(lv)層因(yin)不(bu)斷截留水(shui)(shui)(shui)(shui)(shui)(shui)(shui)中的(de)(de)(de)(de)懸浮物而(er)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)頭損(sun)失逐漸增加，致(zhi)使(shi)濾(lv)(lv)(lv)池(chi)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)位(wei)不(bu)斷上升，當(dang)(dang)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)位(wei)高(gao)出(chu)(chu)排水(shui)(shui)(shui)(shui)(shui)(shui)(shui)虹(hong)(hong)(hong)(hong)(hong)吸(xi)(xi)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)輔(fu)助虹(hong)(hong)(hong)(hong)(hong)吸(xi)(xi)管(guan)(guan)(guan)(guan)(guan)5時，水(shui)(shui)(shui)(shui)(shui)(shui)(shui)急速流(liu)(liu)入輔(fu)助虹(hong)(hong)(hong)(hong)(hong)吸(xi)(xi)管(guan)(guan)(guan)(guan)(guan)并(bing)通過(guo)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)射器(qi)(qi)7及(ji)抽氣管(guan)(guan)(guan)(guan)(guan)6將虹(hong)(hong)(hong)(hong)(hong)吸(xi)(xi)管(guan)(guan)(guan)(guan)(guan)內(nei)(nei)的(de)(de)(de)(de)空(kong)(kong)氣帶走，排水(shui)(shui)(shui)(shui)(shui)(shui)(shui)虹(hong)(hong)(hong)(hong)(hong)吸(xi)(xi)管(guan)(guan)(guan)(guan)(guan)內(nei)(nei)形成負壓，使(shi)大(da)量的(de)(de)(de)(de)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)流(liu)(liu)向(xiang)管(guan)(guan)(guan)(guan)(guan)內(nei)(nei)，帶走管(guan)(guan)(guan)(guan)(guan)內(nei)(nei)剩余空(kong)(kong)氣，造(zao)成了連續(xu)(xu)流(liu)(liu)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)，真正(zheng)形成虹(hong)(hong)(hong)(hong)(hong)吸(xi)(xi)排水(shui)(shui)(shui)(shui)(shui)(shui)(shui)，當(dang)(dang)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)位(wei)降(jiang)(jiang)到(dao)排水(shui)(shui)(shui)(shui)(shui)(shui)(shui)槽口(kou)(kou)，其余各格的(de)(de)(de)(de)過(guo)濾(lv)(lv)(lv)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)就流(liu)(liu)向(xiang)該(gai)格，開始(shi)沖(chong)洗(xi)。與此同(tong)時，當(dang)(dang)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)位(wei)下降(jiang)(jiang)到(dao)進(jin)(jin)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)虹(hong)(hong)(hong)(hong)(hong)吸(xi)(xi)破(po)壞管(guan)(guan)(guan)(guan)(guan)1管(guan)(guan)(guan)(guan)(guan)口(kou)(kou)以(yi)下時，空(kong)(kong)氣進(jin)(jin)入進(jin)(jin)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)虹(hong)(hong)(hong)(hong)(hong)吸(xi)(xi)管(guan)(guan)(guan)(guan)(guan)1，虹(hong)(hong)(hong)(hong)(hong)吸(xi)(xi)破(po)壞，進(jin)(jin)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)停(ting)止(zhi)(zhi)。隨著(zhu)沖(chong)洗(xi)的(de)(de)(de)(de)繼(ji)續(xu)(xu)，計時水(shui)(shui)(shui)(shui)(shui)(shui)(shui)箱的(de)(de)(de)(de)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)位(wei)不(bu)斷下降(jiang)(jiang)直至排水(shui)(shui)(shui)(shui)(shui)(shui)(shui)虹(hong)(hong)(hong)(hong)(hong)吸(xi)(xi)破(po)壞管(guan)(guan)(guan)(guan)(guan)4管(guan)(guan)(guan)(guan)(guan)口(kou)(kou)露出(chu)(chu)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)面，排水(shui)(shui)(shui)(shui)(shui)(shui)(shui)虹(hong)(hong)(hong)(hong)(hong)吸(xi)(xi)管(guan)(guan)(guan)(guan)(guan)虹(hong)(hong)(hong)(hong)(hong)吸(xi)(xi)破(po)壞，沖(chong)洗(xi)終(zhong)止(zhi)(zhi)。當(dang)(dang)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)位(wei)回升到(dao)進(jin)(jin)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)虹(hong)(hong)(hong)(hong)(hong)吸(xi)(xi)破(po)壞管(guan)(guan)(guan)(guan)(guan)1管(guan)(guan)(guan)(guan)(guan)口(kou)(kou)被封住時，由于進(jin)(jin)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)虹(hong)(hong)(hong)(hong)(hong)吸(xi)(xi)輔(fu)助管(guan)(guan)(guan)(guan)(guan)9和水(shui)(shui)(shui)(shui)(shui)(shui)(shui)射器(qi)(qi)8的(de)(de)(de)(de)作(zuo)用，不(bu)斷抽走進(jin)(jin)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)虹(hong)(hong)(hong)(hong)(hong)吸(xi)(xi)管(guan)(guan)(guan)(guan)(guan)中的(de)(de)(de)(de)空(kong)(kong)氣，形成虹(hong)(hong)(hong)(hong)(hong)吸(xi)(xi)，濾(lv)(lv)(lv)池(chi)開始(shi)進(jin)(jin)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)，過(guo)濾(lv)(lv)(lv)工作(zuo)恢(hui)復。

3濾池的改造

3.1過濾系統改(gai)造

3.1.1改造(zao)措施(shi)

由(you)于長時間沒(mei)有使用(yong)，濾(lv)(lv)(lv)(lv)(lv)層、承(cheng)托層的(de)(de)(de)顆粒(li)(li)之(zhi)間與(yu)污泥(ni)已粘結(jie)在一起，較為(wei)嚴密，而濾(lv)(lv)(lv)(lv)(lv)磚(zhuan)的(de)(de)(de)配水孔(kong)也(ye)被污泥(ni)堵塞，故需要對(dui)濾(lv)(lv)(lv)(lv)(lv)池(chi)的(de)(de)(de)過濾(lv)(lv)(lv)(lv)(lv)系統進行相(xiang)應的(de)(de)(de)改造。為(wei)了節省改造資金又能達到(dao)濾(lv)(lv)(lv)(lv)(lv)水效果，采取了以下的(de)(de)(de)改造措(cuo)施(shi)：先將(jiang)濾(lv)(lv)(lv)(lv)(lv)層上部(bu)30cm厚(hou)的(de)(de)(de)濾(lv)(lv)(lv)(lv)(lv)砂(sha)清(qing)除(chu)，然(ran)后(hou)把剩余的(de)(de)(de)濾(lv)(lv)(lv)(lv)(lv)料(liao)(liao)及(ji)承(cheng)托層的(de)(de)(de)粗(cu)砂(sha)礫(li)石全部(bu)清(qing)運出(chu)濾(lv)(lv)(lv)(lv)(lv)池(chi)外(wai)，清(qing)通濾(lv)(lv)(lv)(lv)(lv)磚(zhuan)的(de)(de)(de)配水孔(kong)，用(yong)清(qing)水將(jiang)池(chi)內壁及(ji)濾(lv)(lv)(lv)(lv)(lv)磚(zhuan)清(qing)洗(xi)干凈，將(jiang)運出(chu)的(de)(de)(de)濾(lv)(lv)(lv)(lv)(lv)料(liao)(liao)和(he)粗(cu)砂(sha)礫(li)石中的(de)(de)(de)污泥(ni)清(qing)洗(xi)掉(diao)并曬(shai)干，采用(yong)不(bu)同孔(kong)徑的(de)(de)(de)篩(shai)，通過機械振蕩篩(shai)分(fen)成0.5mm~1.2mm、1.1mm~2mm、2mm~4mm、4mm~8mm、8mm~12mm五(wu)種規格(ge)，補充損耗部(bu)分(fen)相(xiang)應規格(ge)的(de)(de)(de)濾(lv)(lv)(lv)(lv)(lv)料(liao)(liao)和(he)粗(cu)砂(sha)礫(li)石，最后(hou)將(jiang)濾(lv)(lv)(lv)(lv)(lv)料(liao)(liao)和(he)粗(cu)砂(sha)礫(li)石粒(li)(li)徑由(you)大(da)到(dao)小按下往上的(de)(de)(de)順序鋪放(fang)回濾(lv)(lv)(lv)(lv)(lv)池(chi)，承(cheng)托層的(de)(de)(de)各層厚(hou)度(du)及(ji)組成與(yu)原設(she)計一致，濾(lv)(lv)(lv)(lv)(lv)層厚(hou)度(du)為(wei)800mm，采用(yong)了粒(li)(li)徑為(wei)0.5mm~1.2mm的(de)(de)(de)石英沙，其(qi)不(bu)均(jun)勻系數K80=1.68<2，L/de(濾(lv)(lv)(lv)(lv)(lv)層厚(hou)度(du)mm/濾(lv)(lv)(lv)(lv)(lv)料(liao)(liao)有效直徑

3.1.2沖洗水力校核(he)計算

濾(lv)層水頭損失(shi)h1=（γ1/γ－1）（1－m0）H1=(2.65/1－1)×（1－0.41）×0.8=0.779m

承托層水頭(tou)損失(shi)h2=0.022H2q=0.022×0.27×15=0.089m

式(shi)中γ1&mdash;—石英沙(sha)的相對密度（2.65）

γ——水的相(xiang)對密度（1）

m0——濾層(ceng)沙膨脹前(qian)的孔隙率（0.41）

H1——濾層膨脹前厚度（0.8m）

H2——承托層厚度（0.27m）

q——沖洗強(qiang)度(du)[15L/(s•m2)]

兩(liang)次(ci)配水濾磚沖(chong)洗(xi)水頭損失h3：根據(ju)《給水排水設計(ji)手(shou)冊》第(di)二版第(di)三冊查得當沖(chong)洗(xi)強度15L/(s•m2)時為0.64m

總沖洗水頭(tou)損失h=h1＋h2＋h3=0.779＋0.089＋0.64=1.508m≈1.5m（沖洗水頭(tou)）

在實際運行中(zhong)，當水沖(chong)洗時(shi)，濾層(ceng)松動(dong)膨脹，沖(chong)洗強度偏(pian)小(xiao)于15L/(s•m2)，故總沖(chong)洗水頭損失(shi)小(xiao)于1.5m，有一定的富(fu)余水頭，可(ke)以滿足沖(chong)洗要求。

3.2真空(kong)系統改造

濾池(chi)原(yuan)有虹(hong)(hong)吸(xi)進(jin)水(shui)(shui)和(he)(he)虹(hong)(hong)吸(xi)排水(shui)(shui)的(de)(de)真(zhen)(zhen)(zhen)空(kong)(kong)(kong)系(xi)統(tong)為(wei)(wei)水(shui)(shui)力自動(dong)控(kong)(kong)制(zhi)(zhi)(zhi)系(xi)統(tong)，在生產運行中，由(you)于管道系(xi)統(tong)容易發生堵塞而往往造成沖(chong)洗時間(jian)過長、甚至連(lian)(lian)續沖(chong)洗而浪費水(shui)(shui)量嚴(yan)重，或出現不沖(chong)洗而影響出水(shui)(shui)水(shui)(shui)質和(he)(he)水(shui)(shui)量，因(yin)此，須將(jiang)原(yuan)水(shui)(shui)力控(kong)(kong)制(zhi)(zhi)(zhi)的(de)(de)真(zhen)(zhen)(zhen)空(kong)(kong)(kong)系(xi)統(tong)改為(wei)(wei)由(you)真(zhen)(zhen)(zhen)空(kong)(kong)(kong)泵抽真(zhen)(zhen)(zhen)空(kong)(kong)(kong)，可(ke)進(jin)行人為(wei)(wei)控(kong)(kong)制(zhi)(zhi)(zhi)沖(chong)洗的(de)(de)真(zhen)(zhen)(zhen)空(kong)(kong)(kong)系(xi)統(tong)。其改造措施如下：拆(chai)除每格濾池(chi)的(de)(de)進(jin)水(shui)(shui)虹(hong)(hong)吸(xi)管及排水(shui)(shui)虹(hong)(hong)吸(xi)管上原(yuan)有的(de)(de)抽氣管、輔助虹(hong)(hong)吸(xi)管、虹(hong)(hong)吸(xi)被(bei)壞管、水(shui)(shui)射器，并在進(jin)水(shui)(shui)虹(hong)(hong)吸(xi)管及排水(shui)(shui)虹(hong)(hong)吸(xi)管各安(an)裝2個DN20的(de)(de)ZY¬—05型(xing)(xing)電動(dong)球閥，一(yi)個作用是破壞虹(hong)(hong)吸(xi)的(de)(de)開(kai)閉，另一(yi)個是抽真(zhen)(zhen)(zhen)空(kong)(kong)(kong)開(kai)閉，其開(kai)閉由(you)自動(dong)控(kong)(kong)制(zhi)(zhi)(zhi)系(xi)統(tong)控(kong)(kong)制(zhi)(zhi)(zhi)。將(jiang)濾池(chi)頂的(de)(de)原(yuan)制(zhi)(zhi)(zhi)水(shui)(shui)室隔開(kai)兩(liang)間(jian)作為(wei)(wei)真(zhen)(zhen)(zhen)空(kong)(kong)(kong)泵間(jian)及電控(kong)(kong)間(jian)，增設兩(liang)臺SZ—2型(xing)(xing)水(shui)(shui)環式真(zhen)(zhen)(zhen)空(kong)(kong)(kong)泵，一(yi)用一(yi)備，自動(dong)切換，互(hu)為(wei)(wei)備用，安(an)裝真(zhen)(zhen)(zhen)空(kong)(kong)(kong)管道與每格進(jin)水(shui)(shui)虹(hong)(hong)吸(xi)管及排水(shui)(shui)虹(hong)(hong)吸(xi)管的(de)(de)真(zhen)(zhen)(zhen)空(kong)(kong)(kong)控(kong)(kong)制(zhi)(zhi)(zhi)電動(dong)球閥連(lian)(lian)接。

3.3增設自動控制系統

為(wei)了實(shi)(shi)(shi)現(xian)對(dui)(dui)沖(chong)洗(xi)(xi)(xi)及(ji)恢復過(guo)濾(lv)的(de)(de)(de)(de)(de)自(zi)動控(kong)(kong)(kong)制(zhi)，在(zai)控(kong)(kong)(kong)制(zhi)間內增設(she)(she)自(zi)動控(kong)(kong)(kong)制(zhi)柜，其(qi)(qi)自(zi)動控(kong)(kong)(kong)制(zhi)功(gong)能是通(tong)過(guo)內置的(de)(de)(de)(de)(de)可(ke)(ke)編(bian)程(cheng)序(xu)(xu)(xu)控(kong)(kong)(kong)制(zhi)器(qi)（PLC）的(de)(de)(de)(de)(de)順序(xu)(xu)(xu)控(kong)(kong)(kong)制(zhi)、連接控(kong)(kong)(kong)制(zhi)、邏輯判(pan)斷、定時(shi)(shi)、計數(shu)、記憶(yi)和算術運(yun)算等(deng)功(gong)能而實(shi)(shi)(shi)現(xian)的(de)(de)(de)(de)(de)，并(bing)通(tong)過(guo)觸(chu)摸屏編(bian)制(zhi)控(kong)(kong)(kong)制(zhi)程(cheng)序(xu)(xu)(xu)實(shi)(shi)(shi)現(xian)程(cheng)序(xu)(xu)(xu)化(hua)控(kong)(kong)(kong)制(zhi)。觸(chu)摸屏具有顯示直觀、更改程(cheng)序(xu)(xu)(xu)容(rong)易、操作(zuo)簡單等(deng)特點(dian)。自(zi)動控(kong)(kong)(kong)制(zhi)柜與真(zhen)(zhen)空泵、電動球閥連接，通(tong)過(guo)對(dui)(dui)真(zhen)(zhen)空泵、電動球閥的(de)(de)(de)(de)(de)開啟控(kong)(kong)(kong)制(zhi)來(lai)實(shi)(shi)(shi)現(xian)對(dui)(dui)沖(chong)洗(xi)(xi)(xi)及(ji)恢復過(guo)濾(lv)的(de)(de)(de)(de)(de)自(zi)動控(kong)(kong)(kong)制(zhi)。通(tong)過(guo)編(bian)制(zhi)程(cheng)序(xu)(xu)(xu)實(shi)(shi)(shi)行定時(shi)(shi)循(xun)環自(zi)動沖(chong)洗(xi)(xi)(xi)，現(xian)將沖(chong)洗(xi)(xi)(xi)程(cheng)序(xu)(xu)(xu)設(she)(she)定為(wei)：沖(chong)洗(xi)(xi)(xi)周期24h、沖(chong)洗(xi)(xi)(xi)時(shi)(shi)間5分鐘、每格濾(lv)池沖(chong)洗(xi)(xi)(xi)間隔(ge)8分鐘、1格濾(lv)池沖(chong)洗(xi)(xi)(xi)時(shi)(shi)其(qi)(qi)它格濾(lv)池不沖(chong)洗(xi)(xi)(xi)，這樣提高了濾(lv)池的(de)(de)(de)(de)(de)工(gong)作(zuo)效率。因(yin)為(wei)在(zai)試運(yun)行中，此次(ci)改造(zao)(zao)沒有完全(quan)地實(shi)(shi)(shi)現(xian)全(quan)自(zi)動化(hua)，但為(wei)今(jin)后(hou)(hou)的(de)(de)(de)(de)(de)改造(zao)(zao)工(gong)作(zuo)打(da)好(hao)了堅實(shi)(shi)(shi)的(de)(de)(de)(de)(de)基(ji)礎，今(jin)后(hou)(hou)還(huan)可(ke)(ke)以加裝(zhuang)水位(wei)變(bian)送器(qi)、在(zai)線濁(zhuo)度(du)檢測儀等(deng)設(she)(she)備通(tong)過(guo)自(zi)動控(kong)(kong)(kong)制(zhi)柜對(dui)(dui)濾(lv)池水位(wei)、濾(lv)前(qian)濾(lv)后(hou)(hou)濁(zhuo)度(du)進(jin)行實(shi)(shi)(shi)時(shi)(shi)監測，并(bing)根據濾(lv)池水位(wei)、濾(lv)前(qian)濾(lv)后(hou)(hou)濁(zhuo)度(du)變(bian)化(hua)來(lai)控(kong)(kong)(kong)制(zhi)濾(lv)池工(gong)作(zuo)，實(shi)(shi)(shi)現(xian)全(quan)自(zi)動化(hua)控(kong)(kong)(kong)制(zhi)。

3.4其(qi)它改造

拆除(chu)(chu)了濾(lv)池(chi)(chi)(chi)兩側(ce)的(de)4個(ge)DN600待濾(lv)水(shui)輸送(song)管閘閥(fa)(fa)，更換為軟(ruan)密(mi)封閘閥(fa)(fa)（帶省力裝(zhuang)置(zhi)）；拆除(chu)(chu)濾(lv)池(chi)(chi)(chi)原(yuan)32個(ge)DN100排空閘閥(fa)(fa)，并新安(an)裝(zhuang)DN100軟(ruan)密(mi)封閘；維修濾(lv)池(chi)(chi)(chi)至清水(shui)池(chi)(chi)(chi)DN900閘閥(fa)(fa)1個(ge)；加裝(zhuang)慮池(chi)(chi)(chi)進(jin)(jin)水(shui)管支承架；對(dui)濾(lv)池(chi)(chi)(chi)進(jin)(jin)出水(shui)管及欄(lan)桿進(jin)(jin)行防腐(fu)處理，并對(dui)濾(lv)池(chi)(chi)(chi)頂及內(nei)壁(bi)上部鋪設磁磚，使其更加美觀(guan)。

4結束語

濾(lv)池改(gai)(gai)造(zao)后運行一個多月以來，過濾(lv)及沖洗安全穩定，濾(lv)前水(shui)(shui)平均濁度(du)為10NTU，濾(lv)后水(shui)(shui)平均濁度(du)為0.6NTU，符合新標(biao)準(zhun)《城市供(gong)水(shui)(shui)水(shui)(shui)質標(biao)準(zhun)》（CJ/T206—2005）不大于1NTU標(biao)準(zhun)。沖洗時間(jian)5分鐘(zhong)，比改(gai)(gai)造(zao)前縮小了(le)3分鐘(zhong)，節約了(le)沖洗用水(shui)(shui)，沖洗較(jiao)為徹底。自動控制(zhi)系統動作(zuo)正(zheng)常，使工作(zuo)效率(lv)和管理效率(lv)大為提高。對傳統虹吸濾(lv)池的改(gai)(gai)造(zao)，受(shou)到原構(gou)筑物結(jie)構(gou)的影響，某(mou)些改(gai)(gai)造(zao)暫不能在(zai)此次(ci)改(gai)(gai)造(zao)中實施(shi)，需(xu)在(zai)今后的濾(lv)池運行中不斷完善(shan)工藝，保證(zheng)供(gong)水(shui)(shui)的水(shui)(shui)量、水(shui)(shui)質，但此次(ci)改(gai)(gai)造(zao)改(gai)(gai)善(shan)了(le)運行性能是肯定的。

參考文獻：

[1]《給(gei)水(shui)排水(shui)設(she)計手冊》第二版(ban)第三(san)冊城(cheng)鎮給(gei)水(shui)，中國建(jian)筑工(gong)業出版(ban)社，2004.4

[2]嚴煦世范瑾初(chu)主編《給水工(gong)程》第四版(ban)，中國建筑工(gong)業出版(ban)社，1999.12

[3]《城市(shi)供水(shui)水(shui)質標準》（CJ/T206—2005）

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