Simulation analysis of the impact on water quality of the pollutants leaching from the refuse dumped in the three gorges area

Transcription

1 Acta Scientiae Circumstantiae Vol. 25,No. 7 Jul., 2005,,,. [J ].,2005,25 (7) : HUANG Chuan,WANGLi ao,liu Yuanyan, et al. Simulation analysis of the impact on water quality of the pollutants leaching from the refuse dumped in the three gorges area[j ]. Acta Scientiae Circumstantiae,2005,25 (7) : ,2, 1, 3, 3, 1 11, , , : : : : m, ;,,. 135 m,.,, t,, ;135 m,cod cr 0103 mg L - 1,. :; ; ; : (2005) :X523,X524 :A Simulation analysis of the impact on water quality of the pollutants leaching from the refuse dumped in the three gorges area HUANG Chuan 1,2,WANGLi ao 1, 3,LIU Yuanyan 3,LI Dong 1 11Key Lab. For the Exploitation of Southwestern Resources & the Environmental Disaster Control Engineering, Ministry of Education, China, Chongqing University,Chongqing, Post2doctor station of biomedical engineering, Chongqing University,Chongqing, Faculty of Urban Construction and Environmental Engineering, Chongqing University,Chongqing, Received 28 October 2004 ; received in revised form 16 February 2005 ; accepted 25 February 2005 Abstract : By the dynamic simulation and amplification experiments the extracting rates of the pollutants in the municipal solid wastes dumped in the Three Gorges Region were determined and quantified. Then the impacts on the Reservoir s water environment of the municipal solid wastes under the Baseline Plan and Phase 135 m impoundment Cleanup Plan were predicted based on the Offshore Water Quality Model. The result showed that under the Phase 135 m impoundment Cleanup Plan, the increase of COD cr concentration was only less than 0103 mgπl. And then, little impact on the water quality will be brought about. Therefore, the 135m2 flooding phase treatment plan could provide the establishment of 156 m2flooding phase and 175 m2flooding phase treatment plan with successful experiences and important scientific references. Keywords :Three Gorges Project ; Municipal solid wastes ; Water environment impact ; Leaching rule,, [1 ].,,,.,.,,,, : (No :SX[2000 ]2001) : (1965 ),,,,E2mail com ; 3 () Foundation item : Research on the integrated treatment system and specialized technologies for municipal solid wastes in the Three Gorges Area from Office of Three Gorges Project Construction Committee of State Department (No :SX[2000 ]2001) Biography :HUANG Chuan(1965 ),female,post2doctor,associate professor,e2mail com ; 3 Corresponding author

2 7 : 943.,,.,,,,.,,,, 2 (, ) 2,. 1 ( Current situation of the refuse pilled in the region) 111, 3 [2 ]. 135 m 156 m 175 m. 135 m , 135 m, ;156 m 2007, 156 m ;175 m 2009, 175 m m [2 ]. 135 m 175 m,52 ( ), 142, t, 1.,135 m t, 8 ( 2 (a) ) ;156 m 175 m t, 9415 % 12 ( 2 (b) )., 156 m 175 m 135 m 4,, %. 1 Fig. 1 The distribution of the makeshift dumps in the Three Gorges region 112 1), t 3, ( t) ( t) 1).

3 ( t) ; t 2, t, t ; t 10, t, t, t, t, t, t ; t 46, t ; t 81, t., 2 ( (a) 135 m ; (b) 156 m 175 m ) Fig. 2 Regional distribution of the refuse quantity ( (a) During the 135 m2flooding phase ; (b) During 156 m2flooding phases and 175 m2flooding phases) ,., [3 ]. [4 7 ], 10 a. 10 a,5 10 a,5 a., a t (25 %) ;5 10 a t (30 %), 1 5 a %) [8 ]. 114 t (,5 ( 1 m 2 m 3 m),cod Cr TN.,.. COD Cr mg kg - 1, 100 mg kg - 1 ; TN 0117 % 0181 %, 0149 %( 1). 1 Table 1 The physical2chemical characteristics of the refuse in the Three Gorges Region Index measured Fengle town in kaixian county Changhe town in zhongxian county jijiang town in jaignjin county mudong town in banan district luoqi town in yubei county 1 m 2 m 3 m 1 m 2 m 3 m 1 m 2 m 3 m 1 m 2 m 3 m 1 m 2 m 3 m COD Cr Π(mg kg - 1 ) TN 0127 % 0118 % 0119 % 0157 % 0162 % 0156 % 0151 % 0160 % 0156 % 0149 % 0181 % 0143 % 0164 % 0123 % 0126 % 4137 % 7142 % 5169 % % % % % % % % % 9136 % % % % Π (kj kg - 1 )

4 7 : ( Simulation analysis of the water quality influence on the changjiang river mainstream in the reservoir region) t 15, 50 %. (5 15 a) COD 100 mg kg - 1 TN 0149 %,,.,., ( t) ; 1 5 a 10 a ;COD mg kg - 1 TN 0123 % 0164 %, 10 %,., 2, ,,. [9 ] : C( x, y) = k 1 x u, C( x, y) uy 2 4 E y x + C 0 + H u (2 B - y) 2 4 E y x M E y xu (1) (mg L - 1 ) ; M (g s - 1 ) ; u (m s - 1 ) ; H (m) ; E y (m 2 s - 1 ) ; K (L d - 1 ) ; C 0 (mg L - 1 ) ; X (m) ; Y (m) ; B (m).,(1) : C( x, y) = k 1 x u uy 2 4 E y x + H u (2 B - y) 2 4 E y x M E y xu, C( x, y) (2) (mg L - 1 ) ;(1) ,1.,2 :, 2 3, 800 m. 2 [ 10] Table 2 Hydrological Parameters of the Three Gorges section of Hydrological Parameters Changjing River [10 ] Before the building of the dam 2 (135 m) After the building of the dam 2 Π(m 3 s - 1 ) Π(m s - 1 ) Πm sections of changjiang River 3 [ 10] Table 3 Diffusible parameters of the Three Gorges Region [10 ] Π(m 2 s - 1 ) Horizontal diffusion coefficient Hydrological Design flux observatory Π(m 3 s - 1 ) station :,; 135 m ( 135 m,135 m,,,,) : 1 5 a 175 m,5 10 a, 175 m,. [8 ] (,,, ), ( COD Cr ) ( (3) ). CΠC 0 = ( m 0 Πm) 1Π (3), m ( kg) ; m o,( 2 kg), C

5 ( COD Cr ) (g kg - 1 d - 1 ) ; C 0 2 kg, C g kg - 1 d - 1. (3) ( COD Cr ) 2, Table 4 Pollutants intensity of the centralized processing of the refuse dumps in Luoqi treatment plan Π(g s - 1 ) emitting rate Base Plan m 135 m2flooding phase treatment pla the emitting rate means the average of all the emitting rates in emitting rate curve (2),,2 ( COD Cr ) ( 3). 3 (a),, COD Cr m 1187 mg L m 1115 mg L - 1 ; GB (20 mg L - 1 ), 914 % 518 % ; (15 mg L - 1 ), 1215 % 717 %.,. 3 (b), 135 m,cod Cr, m mg L - 1, 0109 %( ),. 2 ( 5), 135 m 100, m COD Cr 135 m 134, m COD Cr 135 m 128., 4 ( t) 135 m,6. 6, m ; 135 m. 3 COD Cr ( (a) ; (b) 135 m ) Fig. 3 Prediction of COD Cr Influence on Water Environment in Luoqi ( (a) base plan ; (b) 135 m2flooding phase treatment plan) Index 5 Table 5 Comparing with the influences on water environment of two projects mg L - 1 prediction value under Base Plan 135 m prediction value under 135 m2flooding phase treatment plan COD Cr : m ; Note : Location 1 is the point downstream m away from the refuse dump ; Location 2 is the point downstream m away from the refuse dump

6 7 : 947 the refuse dumps location 6 Table 6 A comparison of the influences on locate water environment of the large MSW piles Πt Scale (COD Cr ) Forecast value under Base Plan 135 m (COD Cr ) mg L - 1 prediction value under 135 m2flooding phase treatment plan : m ; m Note : Location 1 is the point downstream m away from the refuse dump ; Location 2 is the point downstream m away from the refuse dump km,,,,.,., 142, (4). C( x, y) = M i H E iy ( x - d i ) u i 142 x - d i k 1 i = i u i u i (2 B - y) 2 4 E iy ( x - d i ) u i y 2 4 E iy ( x - d i ), d i i 1 ; i C i E iy M i i,(1). + (4),,. 2,. 2,,.,,,, ;,, ( 4)., : 10 4 t ;, :430Π142 = 3103 (km) ;, : tπ142 = 4123, k i = k, E iy = E y, B i = B, i =, M i = M ;(4) (5). C( x, y) = H 142 x ( i - 1) k 1 i = i u M E y ( x ( i - 1) u u i y 2 4 E y ( x ( i - 1) u (2 B - y) 2 4 E y ( x ( i - 1) + ( x 1, i = 1,2,3 142) (5), x ( ) (m),, x 1 km ; i i, i = 1,2,3,142. (3) 2, :M 1 = g s - 1,135 m M 2 = g s - 1. M 1 M 2 (5),3 m ( 4 (a) (b) ). 4 (a) (b),,,., COD Cr 400 km 116 mg L - 1, 8 %( GB ), ;135 m, 400 km COD Cr 0103 mg L - 1,COD Cr 0115 %( GB ),.

7 ( (a) ; (b) 135 ) Fig. 4 Prediction of COD Cr Influence on Water Environment ( (a) base plan ; (b) 135 m2flooding phase treatment plan),,,, 4 (a) ( 6) m COD Cr 3179 mg L - 1,, COD Cr 3179 mg L m,,cod Cr 0103 mg L - 1, [11 ] :,., 135 m. 3 ( Discussion) [12 ],,1 kg ( COD Cr ) mg [13 ].,, 2009, t( COD Cr ), COD 7 mg L - 1,. ( ) [14 ], 2010,,,. 4 ( Conclusion) 1), m ; 135 m., 135 m ),:, COD Cr 116 mg L - 1, 8 %( GB ),. 135 m, COD Cr 0103 mg L - 1,

8 7 : % ( GB ),. ( References) : [ 1 ] Li J X, Liao W G, Huang Z L. Prediction of the impact of three Gorges Project on Water Flow and Water Quality in the Reservoir[J ]. Water Resources and Hydropower Engineering, 2002,33 (10) :22 25 (in Chinese) [ 2 ] The Three Gorges Project Construction Committee of State Department. Ecological and Environmental [ OL ] , http :ΠΠwww. 3g. gov. cnπ(in Chinese) [ 3 ] Otieno F A O. Stabilization of solid waste through leachate recycling [J ]. Waste Management & Research, 1994, (12) : [ 4 ] Wang L A,Lin J W,Liu Y Y. Research on the stabilization period of MSW dumping sites in the Three Gorges Rigion [J ]. Acta Scientiae Circumstantiae, 2003,23 (4) : (in Chinese) [ 5 ] Wang L A, Yuan H,Cui Z Q. Stabilization Index System of Simple Landfill[J ]. Journal of Chongqing University, 2003,26 (4) : (in Chinese) [ 6 ] Wang L A, Lin J W, Liu Y Y. Study on Stabilization Period of Dumping Sites of Municipal Domestic Waste [ J ]. Shanghai Environmental Sciences,2003,22 (2) : (in Chinese) [ 7 ] Lin J W, Wang L A, Liu Y Y. Fuzzy Comprehensive Differentiation of Stabilization Degree of Dumping Sites in Three Gorges Region[J ]. Shanghai Environmental sciences, 2003, 22 ( 2 ) : ( in Chinese) [ 8 ] Huang C. The influence of Solid Wastes in the Three Gorges Region on the Water Quality of Changjiang River and Evaluation and Choosing of the Cleanup and Treatment Plans [ D ]. Chongqing : Chongqing University, 2003 : (in Chinese) [ 9 ] Lu Y S. Environmental Assessment ( 2 edition ) [ M ]. Tongji University Publishing Company, 1999 : (in Chinese) [10 ] Huang S D, Xu X Q, Lu S Y. The Three Gorges Project, Concerning Its Environmental Pollution & Public Health Impact [ M]. Beijing : Science Press,1994 :39 40 (in Chinese) [11 ] State Environmental Protection Administration of China. Entironment and Monitor of the Three Gorges Regions in 2004 [ OL ] ,http :ΠΠwww. zhb. gov. cnπeicπ(in Chinese) [12 ] Yang J A, Lin C. Solide Waste Pollute Water Environment [J ]. Haihe Water Resources, 1998 (5) :18 19 (in Chinese) [13 ] Wang L A, Lin J W, Liu Y Y. Research on Rule of Pollutant Leaching in the Waste Piled up in the Three Gorges Regions [J ]. Chongqing Environmental Science, 2003, 25 ( 11 ) : ( in Chinese) [14 ] Environmental and Resource Division, State Development and Reform Committee. Pollution Control and Prevention Planning of the Three Gorges Reservoir and the Upstream Region [ OL ] , http :ΠΠwww. cern. gov. cn (in Chinese) : [ 1 ],,. [J ]., 2002,33 (10) :22 25 [ 2 ]. [ OL ] , http :ΠΠwww. 3g. gov. cnπ [ 4 ],,. [J ]., 2003,23 (4) : [ 5 ],,. [J ]., 2003,26 (4) : [ 6 ],,. [J ]., 2003,22 (2) : [ 7 ],,. [J ].,2003, 22 (2) : [ 8 ]. [D]. :, 2003 : [ 9 ]. ( 2 ) [ M]. :, 1999 : [10 ],,. [M]. :, 1994 : [11 ] [OL ] , http :ΠΠwww. zhb. gov. cnπeicπ [12 ],. [J ]., 1998 (5) :18 19 [13 ],,. COD [J ]., 2003,25 (11) :20 23 [14 ]. ( ) [OL ] , http :ΠΠwww. cern. gov. cn