【正文】 設(shè)計(jì)總說明目前我國的電鍍廠、點(diǎn)約有一萬家。每年排放的 4O億 m3廢水約有 50％未達(dá)到國家排放標(biāo)準(zhǔn)。 廢水中含有重金屬離子、有機(jī)化合物及無機(jī)化合物等有害物 質(zhì)。 這些物質(zhì)進(jìn)入環(huán)境，必定會(huì)對(duì)生態(tài)環(huán)境及人 類產(chǎn)生廣泛而嚴(yán)重的危害。電鍍廢水的治理仍是一個(gè)不容忽視的問題。電鍍廢水的 組成成份很復(fù)雜，其 處理技 術(shù)也是多種多樣。此設(shè)計(jì)中，主要是進(jìn)行含鉻廢水、含 CN廢水、和含 Zn2+和 Cu2+重金屬廢水電鍍廢水的處理。電鍍廢水處理車間位于地面一層。設(shè)計(jì)處理廢水量子 2022t/d， （1）含鉻廢水：Q=800t/d，Cr 6+=90mg/L，pH=4 —6；（2）含 CN廢水：Q=200t/d，CN =25mg/L，pH=8—9；（3）重金屬廢水：Q=1000t/d，Zn 2+=20mg/L，Cu 2+=40mg/L，pH=810處理后出水達(dá)到廣東省地方一級(jí)標(biāo)準(zhǔn)（DB44/26—2022）本文了概述電鍍廢水的來源、危害及處理方法概述及該廢水廠的概況；描述了本設(shè)計(jì)的設(shè)計(jì)依據(jù)和設(shè)計(jì)條件；將主要對(duì)處理工藝的選擇、基本原理及工藝流程進(jìn)行了詳細(xì)說明；最后列出了主要構(gòu)筑物的設(shè)計(jì)參數(shù)、工藝設(shè)備的選擇及工程投資的概算和處理費(fèi)用的概算。關(guān)鍵詞：含氰廢水，含鉻廢水，重金屬廢水，化學(xué)法處理AbstractAt present,there are apploximate 10,000 electroplating factories and spots in year,there are about 50% of 40 hundred million m3 wastewater discharged not to achieve the national discharges wastewater includs the heavy metal ions,the anic pounds and the inanic pounds and so on the deleterious material enter into the environment,and can surely have widespread and the serious harm to the ecological environment and the electroplating wastewater was still a not allow to neglect position of the electroplating wastewater is very plex,and its processing technology also is many and view of the fact that single electroplatng factory wastewater processing situation,the wastewater quatity divergence is article uses the divergence and chemistry processing method to carry on the techological design on the containing cyanogen electroplating wastwater.In this design ,it mainly dealing with the electroplating wastewater that contains Cr6+ 、CN 、Zn 2+ 、Cu 2+. And the electroplating wastewater processing workshop is located the first quantum of the wastewater treatment design is 2022t/d.. （1）Q=800t/d，Cr 6+=90mg/L， pH=4—6；（2）Q=200t/d ，CN =25mg/L，pH=8 —9；（3）Q=1000t/d， Zn2+=20mg/L，Cu 2+=40mg/L，pH=8 —10。After treatment,the water leakage achieves Firstgrade of the Guangdong province place standard(DB44/262022).The article outline the in,the harm and the treatment method of wastwater, describes the design basis and conditions of this will mainly secify the craft chioce,the basic principle and the technical ,the main constructions design varible,the process unit chioce,the project investment budgetary estimate and the processing expense budgetary estimate will be listed.Key words: Electroplating wastewater contained chrome, Electroplating wastewater contained cranogen,Electroplating wastewater contained heavy metal ,Chemical precipitation TreatmentI目 錄1 總論 ....................................................................1 電鍍廢水的概述 ......................................................1 工程概況 ............................................................2 設(shè)計(jì)應(yīng)完成的工作 ....................................................2 方案設(shè)計(jì)原則 ........................................................2 設(shè)計(jì)范圍 ........................................................2 設(shè)計(jì)原則 ........................................................2 設(shè)計(jì)說明書編制原則和規(guī)范 ............................................3 設(shè)計(jì)的總體要求： ................................................3 設(shè)計(jì)說明書編制原則 ..............................................3 方案采用的主要設(shè)計(jì)規(guī)范和標(biāo)準(zhǔn) ....................................4 法律背景 ........................................................42 設(shè)計(jì)依據(jù) ................................................................6 設(shè)計(jì)進(jìn)水水量、水質(zhì) ..................................................6 設(shè)計(jì)出水水質(zhì) ........................................................63 電鍍廢水處理方法及流程 ..................................................7 典型的電鍍廢水處理方法介紹 ..........................................7 化學(xué)法 ..........................................................7 物理化學(xué)法 ......................................................7 物理法 ..........................................................8 組合法 ..........................................................84 工藝設(shè)計(jì) ................................................................9 處理工藝的選擇 ......................................................9 含鉻廢水的處理 ...................................................9 含氰廢水的處理 ..................................................10II 含 Zn2+和 Cu 2+重金屬廢水處理 ......................................12 工藝流程說明 .......................................................14 1廢水，含鉻廢水的處理 .........................................14 2廢水，含氰廢水的處理 .........................................15 3廢水，含銅、鋅重金屬廢水處理 .................................16 沉淀池 ..........................................................16 砂濾池 ..........................................................17 出水池 ..........................................................17 污泥處理 ........................................................17 污泥板框壓濾的設(shè)計(jì)計(jì)算 .........................................17 主要構(gòu)筑物設(shè)計(jì)計(jì)算 .................................................18 調(diào)節(jié)池 .........................................................18 1 還原反應(yīng)池 ..................................................19 2 氧化反應(yīng)池 ..................................................20 含銅、鋅重金屬反應(yīng)池 ...........................................20 沉淀池 .........................................................21 砂濾池 .........................................................22 出水池 .........................................................22 污泥濃縮池 .....................................................23 設(shè)備房 ..........................................................24 主要工藝設(shè)備 .......................................................25 1廢水反應(yīng)池提升泵 ..............................................25 2廢水反應(yīng)池提升泵 ..............................................25 含鋅、銅儲(chǔ)水池提升泵 ............................................25 二沉池、污泥濃縮池污泥泵 ........................................25 2廢水反應(yīng)池機(jī)械攪拌機(jī) ......................................26 羅茨風(fēng)機(jī) ........................................................26 蜂窩斜管填料 ....................................................26 板框壓濾機(jī) ...........................................