환경시스템 분석 제 6 장 . 하천의 고전적 오염물질
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Transcript of 환경시스템 분석 제 6 장 . 하천의 고전적 오염물질
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20041445
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BOD
(E : , Q : , t :)
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BOD . BOD BOD .BOD . BOD x . .
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BOD () .
, 1 BOD () .
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, , BOD . . (, , )
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D.O.
, BOD-D.O. . . ( u : , )
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DO
V(dc/dt) = + ( - ) - CBOD, NBOD() - + - ( ) ( V: , c: DO . )
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K1 L dL/dt .
( L0: , K1: )
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, .
(D: , K2: ) Streeter-Phelps .
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- , , . - . , , . - . , , 1 .
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(Oxygen Sag Curve) .
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,
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O'Connor and Dobbins (1958) - , .
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( S: , Dm: , D: U: ) Chezy 17, 17 .
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Owens, Edwards and Gibbs(1964) 0.03 - 1.5m/s, 0.1 - 3.35m .
Isaacs(1964)
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Thackston and Krenkel(1966) Tennesee .
Churchill, Elmono and Buckingham(1962) .
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Streeter-Phelps NBOD, SOD, (P-R), DO . , , ( ) .
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[] DO . CBOD (L), SOD (S). (kn) NBOD, (kd), (ka), CBOD (ks), (P-R)
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- , (R-P) DO . DO . (R>P) . (R-P) . ( ) R>P .
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DO 1 . ( = - )
(H: )
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, . L N .
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.
, CBOD(L0), NBOD(N0), SOD(S0), (R-P), BOD(Lb)
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[] / source sink .
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[] / DO source sink .
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Fourier .
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(7-, 10 1 ) . , . DO . () . DO .
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DO (DO ) . (DO) .
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. , . . , t=0 () () .
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x=0 . .
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1 1 , Fourier .
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A, B .
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. . ( ). . (, , ). , . .
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. , . , , . .
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1 1 ( -) - . () () . x y .
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x , y x . x x . .
0 . F(x) .
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( S: , S2: ) . , .
, .
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Monte Carlo Monte Carlo . . ( ) . . ( ) . , .
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. () . Monte Carlo , . (), , . , .
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. , . .
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y .
Monte Carlo 1 . , .
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Monte Carlo .1. , , .2. . . 3. . 4. 2 3 .( 100-200). 5. .
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1 2 1 , , , .
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1 .
p q . .
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y(x)
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. y(x) .
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R R . 1
M(x, y)=-f(x, y) N(x, y)=1 . A
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A(x, y(x)) x .
y(x) M + Ny' =0 .
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. y x . . .
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y 0
. .
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Laplace . , F(t) f(s) Laplace .
1 . Euler, Runge-Kutta 1 Euler, Runge-Kutta .
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. , . . , , , , , .
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, , , . Web .
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. - - . - . - . - .
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, . , , ( ), , GIS/LBS, /, RFID, SoC MEMS