1、電凝聚除磷及動力學(xué)分析 張惠靈等電凝聚除磷及動力學(xué)分析張惠靈I,李良華I,伊江明2(1武漢科技大學(xué)化匸9資源壞境學(xué)院，武漢430081；2.武漢鋼電股份有限公司，武漢430082)摘 要：采用電旌聚對含磷廢水進行處理.得到很好的去除效果.同時對電聯(lián)聚除磷進彳丁門力力學(xué)分析：電凝聚對隣的去除符合一 級反應(yīng).磷濃度號電解時間存在如下關(guān)系：G =A/+ /I) .K'l'反應(yīng)速率常數(shù)A吋電極反應(yīng)速度(電流密度關(guān)，電流密度越大.反應(yīng)速率常數(shù)*越大；另外電凝聚除磷單位能耗與電流密度符合指數(shù)關(guān)系：Q= gd 其中k4 是與極板材料有關(guān)的系數(shù)。關(guān)鍵詞：電凝聚；含磷廢水：動力學(xué)分析中圖分類號:

2、X830. 2文獻標識碼：A文章編號：1(X)3- 6504( 2(X)5) O3-OO57-O31994-2012 China Academic Journal Electronic Publishing House. All rights reserved.電凝聚除磷及動力學(xué)分析 張惠靈等1994-2012 China Academic Journal Electronic Publishing House. All rights reserved.電凝聚除磷及動力學(xué)分析 張惠靈等CD*I OmA/cm4的去酸軍 -OJOmA/cm1的單農(nóng)能耗r/min£2電解時間與PPR單位

3、能耗關(guān)系曲線(恪極板)CD2 OmA/cm'的去隊軍 -CD-lOmA/cm1的單位能耗圖3電解時何與PPR單位 統(tǒng)耗關(guān)系曲線(鐵極板)眾所周知，排入水體中的氮磷含帚過高將引起水 體的富營養(yǎng)化，破壞水體的生態(tài)平衡.從而影響水體的 使用價值。常用的除磷方法卜習(xí)冇:物化、生物處理。牛物除磷是通過好氧吸磷、厭氧釋磷.故終通過污泥的 排放來去除的生物處理所需的時間較長而4除磷效 果一般不會超過3()%E;化學(xué)沉淀法山于除磷效果 高，應(yīng)用普遍但是山于其使用了人承的沉淀劑成本 較高而口人暈藥劑的使用還會対環(huán)境造成二次污染。 電凝聚技術(shù).山于裝置簡單、易操作、不需化學(xué)藥劑、產(chǎn) 泥雖小、対環(huán)境無二次污

4、染等優(yōu)點受到環(huán)保研究人員 的青睞。本文主耍研究電凝聚除磷的仃效性，同時進 行了動力學(xué)和能耗分析。1實驗裝置和方法1. 1試驗裝宜實驗在自制的電凝聚槽(123mm x 123mm x 134mm)中進行，槽中安置6塊平行的金屬板作為電 解的正負極，極板的尺寸為:102mm x 110 in in x 0. 5 mm,每塊極板浸水而枳90cm2,電凝聚裝克如圖1。直潦電渾/ 5B力損畔/國I電凝聚反應(yīng)裝宜1.2實驗方法實驗用水是用磷酸二氫鉀配制的溶液；實驗主要 考察了電凝聚的電解時間、電流密度、原水|)H值、原 水初始濃度、極板材料等岡素対除磷效果的影響。每作者簡介:張惠靈(1969- ).女.副

5、教授.碩匕從事水處理相關(guān)的教學(xué)次實驗取水1.5L,極板材料為鋁板或鐵板。為了保證 測試數(shù)據(jù)的穩(wěn)定性.每次實驗前用砂紙把極板表而打 幣于凈.同時為了降低能耗和活化電極每次實驗前在 水樣中加入了 1.5呂的NaCI,試驗屮保持電流恒定，通 電開始后計時,到預(yù)定時間后迅速取出極板，靜駅沉 降在水深lOnun處虹吸取水監(jiān)測。磷的含晴用鉗酸 錢分光光度法測定引o 2實驗結(jié)果和討論2. 1電解時間刈除磷效果的影響廢水含磷濃度20mg/L,沉淀時間為20min.以鋁、 鐵為極板，電解時間與除磷效率(ITR)及能耗如圖2、 3所示。山圖2、3可以看出不論是鋁極板、還是鐵極板, 在一定的電流密度下，隨著電解時間

6、的增人，磷去除率 增加，同時還町以發(fā)現(xiàn)在電解的眾初一段時間內(nèi)磷去 除率増長迅速，隨后隨著電解時間的增加，左除率增加 緩慢。分析原因：在電解的初期,電解產(chǎn)生的金屬離子 較少，不足以沉淀溶液屮的磷酸根離子，隨著電解時間 的增大，電解產(chǎn)生的金屬離子(Alu、Fe")增多，從而 使磷酸根和A13*或Fe"結(jié)合生成A1P04或FeP(h的 兒率增大，使磷去除率増加,同時由于電凝聚過程產(chǎn)生 的金屈氫氧化物具仃強烈的絮凝吸附作用，加速了磷 的去除當電解時間繼續(xù)增大時廢水屮的磷酸根離子 C經(jīng)相對較少，牛成磷酸鹽的帕?xí)鄬档退匀コ?994-2012 China Academic Jour

7、nal Electronic Publishing House. All rights reserved.電凝聚除磷及動力學(xué)分析 張惠靈等和科研發(fā)表論文10余篇.（電話）027- 68862331（手機電 fi Iff） li uiling_zh aiig69 holmaiL com。率增加變得緩慢。比較圖2、3還可以發(fā)現(xiàn)，在相同的電流密度和電1994-2012 China Academic Journal Electronic Publishing House. All rights reserved.電;疑聚除磷及動力學(xué)分析張惠靈.等試驗號指標回歸方程相關(guān)系數(shù)1A

8、i,CA = Goex|)(- 0. 1642/+ 0.3629)0. 922Ah= CqexM- ft 1952/+ 0.202)0. 973FeiG = CgeqM- (1 (M48/+ 0. 176)0. 974FeaCA = G()expf- 0. I056/+ 0.2335丿0. 90注:Cj、Ca分別為原水和電解某-時間卜的磷濃度，單位mg/I.；拆標參數(shù)代衷為極板材料.參數(shù)指標的卜標數(shù)值為電流密度 tfi.巾位 in A /(w2 電流密度/mA cm* 圖4電流密度與PPR單位能耗關(guān)系曲線(鋁極板)圖5電流至度與PPR單位 能耗關(guān)系曲線(鐵極板)衲度沁£的打粹M度20

9、噸億的位屣耗0 0300 G0 02S0 :00150 >00150 0 0100 0 00500 00<><>r/min圖6電解密度與PPR單位能耗關(guān)系解時間卜鋁極板的磷去除率明顯高于鐵極板當電流 密度為2mA/cm2,電解時間為5min,電解鋁極板對磷 的去除率為53. 25% 而鐵極板的僅僅為4. 5% :電解 時間為lOmin時,鋁極板對磷的去除率為84. ()3%，而 鐵極板為60. 8%。分析圖2、3可以看出，去除單位 磷鐵極板的能耗比鋁極板的高在電解時間為lOmin 時,鋁極板的單位能耗為0. 0123kWh/g磷，而鐵極板 為0. 0217kWh/

10、g磷.如果達到和同的去除率,鐵極板 的能耗為0. 0434kWh/g磷，比鋁極板高約3. 53倍。 我們知道，鐵和鋁的標準氧化還原電勢分別為：A1/ A1" = - 1.66V, Fe/Fe2+ = - 0. 44V, Fe+ / Fe" = + 0. 771V,這町能是兩種電極能耗差距大的原鳳所以 對電凝聚除磷來說鋁極板要優(yōu)于鐵極板。分析圖2、3發(fā)現(xiàn)在電解的最初時間內(nèi),去除單位 磷的能耗特別髙隨笛電解時間的増大,能耗降降低 到某一值后再隨桿電解時間的増大，能耗增加，且能桂 卑木上與電解時間呈線性增加將能耗曲線與去除率曲 線比較發(fā)現(xiàn)在此最低點以后，隨電解時間的增大磷去 除率

11、增加比較緩慢而H在相同的廢水濃度和相同的極 板材料卜：此能耗最低點隨著電流密度的增加向左遷 移,即隨著電流密度的增加，達到相同的去除效果所需 的電解時間降低。能耗Z所以出現(xiàn)轉(zhuǎn)折點分析原肉: 電解赧初過程仃一個極板活化過程，在電解時間比較短 的情況下，此過程所占的比車較人,仃效效率低所以出 現(xiàn)放初時間內(nèi)去除單位磷的能耗很高。為了降低能耗, 建議電解時間取能耗轉(zhuǎn)折點稍微偏人一點。另外分別対鋁極板、鐵極板電凝聚除磷進彳亍了動 力學(xué)分析，發(fā)現(xiàn)剩余磷濃度與電解時間之間存在一定 的關(guān)系，如表1。山表1可知,電凝聚對磷的去除符合 一級反應(yīng)，即濃度與電解時間之間存在如下關(guān)系Ci = C<oexp(- A

12、r + A)，苴中反應(yīng)速率常數(shù)k與電極反應(yīng) 速度(電流密度)仃關(guān),隨行電流密度的增加，反應(yīng)速度 加快,去除效果增強這在試驗屮也已得到證實。表1污染物濃度與處理時間的關(guān)系2.2電流密度對除磷效果的影響在電解時間lOmin,沉淀時間20min的條件卜，采 用不同的電流密度対磷濃度為20ing/L的廢水進行處 理圖4.5分別是以鋁.鐵為極板.電流密度與除磷率 和去除單位磷能耗的關(guān)系圖。如圖4、5所示，不論是鋁極板還是鐵極板在相同 的電解時間和沉淀時間下，隨著電流密度的増尢去除 率增加，但當電流密度增加到一定數(shù)值后，去除率增加 速率變得緩慢。然而比較圖4、圖5可以看出對于鋁 極板，當電流密度>

13、1.5m A/cm2以后，磷去除率增長 就開始變得緩慢而對于鐵極板，電流密度3.0mA/ cm2以氐磷去除率增長力變得緩慢所以在相同的電 解時間內(nèi)，要達到相同的去除率鐵極板要求的電流密 度人，而且隨著電流密度的增加，去除單位磷的能耗 增加,所以在相同的電解時間內(nèi)達到相同的去除率，鐵 極板的能耗要高于鋁極板同時山圖4、圖5町以分析 得到，為了降低能耗在滿足要求的情況下，盡可能選 擇較小的電流密度。對電流密度與去除單位磷的能耗關(guān)系進行了分 析發(fā)現(xiàn)不論是鋁極板還是鐵極板，去除單位磷的能耗 與電流密度之間存在指數(shù)關(guān)系如表2所示，即去除單 位磷的能耗0與電流密度x之間存在如下關(guān)系：Q二 &【ex

14、p(4x丿，其中是與極板材料仃關(guān)的系數(shù)。表2單位能耗與電流密度關(guān)系極板單位能耗與電流密度 關(guān)系的回歸方程相關(guān)系數(shù)AIQ 二 0. 0037小曲0.7105戈丿0.99FeQ= 00089exp(0470“ 丿0.972.3濃度對磷去除效果的影響圖6為以鋁為極板.在電流密度為2mA/cm沉 淀時間為20min 電凝聚對不同磷濃度廢水處理的 效果和能耗分析。由圖6可以看出，在相同的電解時間內(nèi),濃度越 大,去除率越低。對于磷濃度為20m g/L的廢水在電 解時間為l()min時.去除率為84. ()3% .而磷濃度為 l(X)rng/L的廢水去除率僅為17.65%,但隨著電解時 間的增人高濃度廢水的

15、去除率繼續(xù)以高速率增加，當 電解時間達到30min以后，去除率也接近90%.所以 對于高濃度的廢水在相同的電流密度下，要達到和同 的去除率，需要花費更長的電解時間,這足囚為在單位 時間內(nèi)電解產(chǎn)生的金屬離子的鼠相等，而高濃度廢 水要達到相同的公除率所需的金屈離子的量增人，B 此需要更長的電解時間產(chǎn)生所需金屬離子。同時如圖 6所示,隨著廢水中磷濃度的增加，去除單位磷的能耗 降低。分析原因如下:在相同的電解時間內(nèi)，電解產(chǎn)生 的金屬離子的吊不變，高濃度廢水屮的磷酸根與金屬 離子發(fā)牛凝聚的機會增大形成絮凝體的兒率增加，電 解產(chǎn)生的金屬離子的利用率増大，單位時間內(nèi)去除磷 的總帚增大，從而使去除單位磷的能耗

16、降低。2.4 pH對除磷效果的影響以鋁為極板，電流密度為2mA/cm電解時間 10min ,沉淀時間20min. ill pH與PPR的效果發(fā)現(xiàn)當 pH為7時去除率達到最大值，即電凝聚除磷在中性 條件最好,廢水在處理過程中不需要調(diào)節(jié) pH o 3結(jié)論(1) 電凝聚除磷仃很好的效果隨著電流密度、電 解時間的增大，去除率增加去除單位磷的能耗增加; 另外磷的去除率和單位能耗隨廢水中磷濃度的增加 而降低。(2) 電凝聚除磷.鋁極板優(yōu)于鐵極板。(3) 電凝聚對磷的去除符合一級反應(yīng)，磷濃度與電 解時|'訓(xùn)存在如下關(guān)系：Ca = Ca() exp(- kt + A)，其中 反應(yīng)速率常數(shù)&與電

17、極反應(yīng)速度(電流密度丿仃關(guān),電 流密度越人，反應(yīng)速率常數(shù)人越人；另外電凝聚除磷單 位能耗與電流密度滿足指數(shù)關(guān)系:Q =仙exp(虹叮， 其中A-i、4是與極板材料有關(guān)的系數(shù)。參考文獻II 1顧小紅黃種買.虞啟義.污水除磷技術(shù)的現(xiàn)狀及發(fā)展趨 勢J 資源再生研究，2002, 3: 33-35.2鄧聰，鄧春玲.楊疔喜，等.污水除磷技術(shù)J云南環(huán)境科 學(xué).2003. 22( 1):52-55.(3| Nihal Bekla% Hil.il X kbuluL Hat ice Inan. H al. Removal of phospliate fn)m aciueiMis solulioiis by ele

18、ctcoagulation| J| Jounial of 11 azanlous Materials, 2(X)4, 10k 105.4中國標準出版補第二編輯室.中國環(huán)境保護標準匯編水 質(zhì)分析方法S.北京：中國標準出版社.|5)馮爽，孔海南,褚春風，等.電凝聚去除二級處理出水中的 磷J.中國給水排水,2003, 19( 1):52-54.(收稿 2004-06-07:修冋 2004 IQ22)© 1994-2012 China Academic Journal Electronic Publishing House. All rights reserved.ki.ne?電;疑聚除磷及

19、動力學(xué)分析張惠靈.等© 1994-2012 China Academic Journal Electronic Publishing House. All rights reserved.ki.ne?電;疑聚除磷及動力學(xué)分析張惠靈.等(上接第42頁)析結(jié)來中，高壞的組分在第一主成分上仃高載荷，而低 環(huán)的組分則在第二主成分上仃高我荷。在所仃的分析 中Ant 直是一種恃殊的組分，這表明可能存在特殊 的污染源或自然因素。參考文隸| 11 Johnson R W idierti 1) *pplied M ulIiv ariat e ?naly- sis| M. NJ: Englewood C

20、liffs PrenticeHalt Inc. , 1998.2 Keith L H ,Trlliar<l W A. Priority Pollutants 4 A Perejiee- I iv e iew | J| Environmental S-ience & f r(4i nolog y> 1979.13： 416423.3 崔艷紅，朱雪梅.郭劇青，等.人津污灌區(qū)土壊中多環(huán)芳婭 的提取、凈化和測定|J.環(huán)境化學(xué),2002. 21( 4) ： 391396.4 陶潮.應(yīng)用數(shù)理統(tǒng)計方法M北京:中國環(huán)境科學(xué)出版 比 1994.5 SmiriK)v A. AbrajaiM)

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22、biterpretation of Analytical Data on N- A Ikanes and Polynuclear Aromatic Hydrocarbons in Arliacia Lixula from lhe Coasts of Tmerife ( Qinary Islands, Spain ) by M uhivariate Data A iuilysis| J). ClirnMihpliere, 1999.39: 22542270.7 Wilcke W. M uller Kanchaanakool C N. el aL Polycyclic .Aromalic Hy&l

23、t;lrocarl)ons in Hydromorphic Soils of the Tropical Metre>polis Bangkok | J | . Geoderma. 1999. 9 1: 297-309 | 8| Tra|>i(k> M . Polycyclic Aromalk- H ydrocarbons in Estoni- an Soil: Contamination and Profiles | J . Env ironmen tai Pollution. 1999, 105: 67-74.9 Berner B A Jr, Bryner N I Wise

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25、ydney H arbour A ustralif J. Marine Pollution Bulletin. 2000,40:999 1(X)6.(收稿 2004-03-30:修回 20040525)© 1994-2012 China Academic Journal Electronic Publishing House. All rights reserved.ki.ne?AbstractEnviron mental Science aiul TechnologyVol. 2& No. 3, May 2005.1994-2012 China Academic Journ

26、al Electronic Publishing House. All rights reserved .1994-2012 China Academic Journal Electronic Publishing House. All rights reserved arial e analysis is far l)eller than I lie uni variale oneKey words: T uinjiiK PA H s; mu II ivariale analysisStudy on Structure of Bacteria with Two Kindsof Activat

27、ed Slud學(xué) Deaded BenzoateWkstcwater by ARDRAZHANG Qi»g1,2. CHEN Li-weil, HU Jiang',FANG De-hua*, LI Shun-peng'(1. Key Laboratory of Agricultural EnvironmentM ic robin I ogiai I Engineering of M inis I ry (jf riculltire College of Life Science, Nary in A ri culturalUniversity 9 Nanjing 21

28、0()95;2 Col lege (才 Resource(uul E nv ironmen! Science.Sotiihw esIAgriculturaI Universify 9Chongqing 4(X)716丿Ahstract ID: 1003-65(M(2005) 03-0043-04-EAAbstract： The diversity of inicroorganisnis associated with two kirnis of ad ivaled sludge cuhivated in different corwlitions w as ecamifted by both

29、cult ivation- based and molecular- based anal v- sis. .Aft er lol a I <y> mm unit y genomic l)N A was han eslrd from the sludge oligonudeoiides oumplemeni ary t o conserved regions in I 6S1)X1 A of bacteria were used for PCR arnplifi<aation. The 16S rDN A PCR products were suIm IovihI uimI

30、further characterized by a reslr iclion fragmeiil length analysis termed AR DR A ( am pl if ini rDN A restriction analysis). Results re- vealecl great difference between two kinds of sludge: about 20. 4% of fingerprinting is special in the lilwary I an<l 24. 3% in ihr lib rar)* 11. 103 and 107 ki

31、nds of fingerprinting are obtained by ARDKA but onlv 7 and 8 kinds of microbials are cultured in ilk* |>)atn account for 6. 8% and 7. 5% rrsjxTlivelyw which Revealed that A KI)R. is <i<lvantageous over the div ersily of microorganisms in lhe slu<lgeKey words: benzoate： diversity: A KDRA:

32、 f higerprinlingStabilization Analysis (f Household Wastein Small Dumping Sites in Three Gorges AreaLIN Jiah-wei1, WANG L4-ao2, CHEN Ling',HUANG Chuair, HU Gang2(1 College of E nv iron m en I Science a nd Eiif( ineering Tongj i University 9 Shanghai 200092;2. School of Resource and Environment f

33、Qiongqing University 9 Chongqing 400(X44)AhKtract ID: 1(X)3-65(M(2(M)5) 03-(X)46-03-EAAhstract： Il is importanl Io take effectivr measures for managing tln>se small duin ping siles which are slia|)e(l due to disorderly pilrup of municipal solid w aste along the Yangtzt* K ivrr and its tributary n

34、alvsis ami judgintuit of their stabilizat ions are direct ly related to valklit y and |>ertirien( e of the <lis|M)sal. Organic in alien lix iv iu in inchkling COD, TN t TP and w ater conlenl was atialy zed to assess the st abi lization (legree of three small <luvnpiiig sites IIml dosed for

35、four or five years in Three Gorges area Key words：household wasle; stabilization(lrgrreEnvironment Interpretation ofSedimentary Pigment in the East LakeYANG M ing*,QIU Ha4-ou',T ANG Zh4-yong',(/(J aH-shetig2, H l A N Fen1, CHEN Y ua»-x iong1(1 College of Material Science and Chemical En

36、gineering;2 College of Enr iromnenl, China Univ er sit y ofGeosdena?s, Wuh(ui430074)Abstract ID: 100165()4(2(X)5) 05-(X)48-0EAAbstract Several rneasiireinpiil inelhcMls as w ell as envi ronrnenl interpretation of pigment in sedifnenl of lhe East Lake by U V spedrometry was iiilro(lii(ae(l I o discus

37、s hundreds of years of vironiikiit ev olut ion in lliene area Results sliowed that lhe Lake is in a status of heav y hi trophical ion in recent t w Hity years with industrial clevelopiiHHit atxl |M)pulal ion inerrase Key words： East Lake; sedimHit: pigmentChange of Aldehyde and Ketone WhenUsii> B

38、enizine with Etlianol by VcliiclesPENG Hua. WU Xhrjie,LI M ing, KON G Zheng(H enan Env ironmenlal Monitoring Centre, Zhengzhou 450004) Ahstract ID: 10046504(2005) 03-005P02-EAAbstract： The conlenl change of a Idehy <le and kel one in tail gas after using benizine w illi ethanol by vehicles was st

39、udied. Results showe<l the(aontent of aldehyde increased obviously w ith average increased rate of 47. 8 92. 1%; wliilr IIh* rontt'iil of kelorie iwreased slightly with iiK-rease of 16. 6% arid 25.3% Key wewds： vehicle ex haunting gas; benizine w il li ethanol; aldehyde and keloneApplication

40、of P-Matrix MLR Methodin Determination of COD by PhotometrySHI Chao-jun, LIU Xia(尸yin. MENG Jian-xin(Department of Che in istry, J i tian Unit ersily 9Guangzhou 510632)Ahstract ID: 1003-6504(2005) O3-OO5S-O2-EAAbstract： COD delerinination by |4iol()!nelry is letter than lhe recoin rnrrukd m el hod l

41、)y nal ion a I st atMlard <lue Io its (juicker an<l easier manipulation Howe'er, severe errors are liable lo occur when sample has some cn-existent mH al ions This pa|>er introduce a teehniejue of T2-matrix MLR which can eliminate this kind of interference of metals Kelale<l ex|)erit

42、nenl s luve been mndudtxl lo demons!rate the fundion of matrix MLR as w ell Key words:COD; photomrfry; P-mat rix; |)artial calibrationComparison of BTEX Detection in AirIJ Bing-qing, WU Shi-jian, M A Wei(Shanghai Municipal Etivironmenl M(miloring Centre.Shanghai 20()030)Ahstract II): 1(X)3-6504( 2(X

43、)5) O(X)55-O2-EAAhstract： file <lifferen(r between or king curves and ralibralion curves of BTEX in gas standard w ith active carbon absorl>e<l an<l CSa desorbed was a>mparect in which styrme had a big (litfereiwe in either of them.Key words: gas cliromatography; BTEX; gas standard: a

44、clive (url)onRemoval of Phosphate from Aqueous Solutions by Electro-a)agulation and Kinetics Analysis ZH A NG H u-i-ling1, I.l Liang- hua1, YI J ia ng-mi if (1. College oj Chemical Engineering a nd Resource Environment, WtJuui I niversity of Scientv and Technology W u/k/n43(X)Kl;2 Wuluui Gtuidian Co

45、. Ltd. , Wuhan430082).1994-2012 China Academic Journal Electronic Publishing House. All rights reserved IV .1994-2012 China Academic Journal Electronic Publishing House. All rights reserved AbstractEnviron mental Science and Tech nolog y Vol. 2& No. 3, May 200591994-2012 China Academic Journal E

46、lectronic Publishing House. All rights reserved.1994-2012 China Academic Journal Electronic Publishing House. All rights reserved.Ahstract ID: 1(X)3-65(U(2(X)5) ()3-(X)57-()3-EA.Ahstract： The rrmoval of pliosphale was tff icienl lo treal pho?- pliorus containe(i w asl en ater by eled ro- <eoagula

47、lionw and ki- nelics ana lysis show e(l lhal tlie removal was in acc-orcLince w ill) tile first reuclionKey words:electr<>-(naguki ion:phosphorus (aonkiiixj(lwaslew atenanalysisClassification of Vegetation Individualsand Attributes in Loess PlateauLI Su-qing1, LI Bin2, ZHANG Jin-tun1(1. Rsearc

48、h Institule ofPlateau,S lui rix i University, T aiy uan030006;2)epart me nl of Erw ironmenl and Safe E nineering.Zhongbei University. Taiyuan03005 )Attract II): 1(X)3-6504( 2(X)5) 0M 006(4 0)EA/Xhstract： The vegetation individiiak and attributes in Loess Plateau w ere classified by (；IS lechtiology

49、and TWINSPAN (Iw o- way intiicator species analysis). Results allowed that the Plateau u as classified inlo four zones, in(4u<liiig f ive suit-zones, which w in accordance with llir rrnultn obtainr<l by DC A ( <k trended corres|M)!i(leiHv analysis) CC A ( (-anonical (urrespott- derx-r analy

50、sis) and IX1C A (delend rd (eaiM)iii(<il (i>rrespon- detice analysis)Key Mords: Loess Plateau; (JS; vegetal ion; class if i cut ion of indiv iduals and allribulesApproaches to Acceptance Check M(nitorii> ofEnvironmental Protection for Construction ProjectsZHENG Lu-min1. YANG Sh-i-jiair, JI

51、Yae- tong3/ 1 Jiangsu Prov itu ial E nv iron men!Monitoring Centre. Nanjing 210036;2. CY TS Sysnel Environmental Co. Ltd9 Nanj ing 21 (X) 12;3. S tu/ian 1/ u nicipal Environ menialProted ion Bureau. Siufian 22 38(X)Ahstract ID: 10036501(2005) 03-0()63-02-EAAbstract： According to lhe national adm mis

52、tral ion regulat ions concerning managemenl of construction projects. 111 is paper poses problems in I lie acceptance check monitoring for lhe !>ew ly completed industrial projed. Suggest ions for strengthening lhe inoiiiloring are pul forward.Key words： <aonsl ruction project; com pl el ion;

53、aceejilance dirck monitoring; en ironmental protectionPreliminary Study on Tradable Pollution PcniiitsH U Qiact-kai(Department of Chemistry an(1 Enviroiunental Engineering,H ubei N or ma! College. H uanshi 435002丿.Abstract ID: 1003-6501(2(X)5) 03-a)65-03-EAAhstract： I lie iinportanl role of trade of

54、 pollution |)er!nils played in <lis|)osing social resoinee and environtiKUil inaiiageinent w as discussed, as w ell as ils <air(*unislan(ae operation in (Jiina Key words： trade of pollutionresour(v <lis|M)sal; rnvi-r on in ent managementEcok)cal Envinminit Adicn Plan for Duoka Gdd MineXIANG

55、 Zhen1, CHEN Sli«-juaiiWU Xiang-pei3, ZH AO Bao-chang1(1 School of Chemiuil Engineering Nary ing Universityo f Science and Technology, A anj inf： 2 10()94;2 / aix i Pref edtire En vironrnent M unit or inf：Centre H aixiH 170()0;3. Q inghui Rexettrch atul Design A rail enty of Env ironmenl Scienc

56、e, X ini ng 810()07 ) Ahstract ID: 10046504(2005) 03-(X)67-03-EA Ahstract： Ecological hiviroiinient ad ion plan xv as worked oul Ixised on invesligating rxisting status of natural rnvironrnenl an<l ecosyslem of Duoka Gold M iiie, for the |)ur|M>se lo estaHi?- liing a healthy and safety ecosyst

57、emKey words: go Id miw: r(x>systrm; t realnuuil: planGreen GDP Accderated by Circular EconomyWANG Xian-enZHAO Xiao-xia', CH EN Yin腎畀，QIU L-i-min1, LI Yuig-hua3(1 Colle()f EnvironnietU and Resource.Jilin University, Chajigchuni 30026;2 Research (Venire of Nortlieasl .45/a,Jilin University 9 Changchun300 2:3. S liulan Municip al Environment Prolet lion Bureau