تصميم محطة معالجة مياه الصرف الصحي 1

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0302 0102

20331 8118

002 002 d/L

063.4932 042.1641 d/3M

ces/3M

5219610.0

5217720.0

53.0 33.0 nim K

7900.0 85500.0 ces/3M

2.2 43.2 xam K

9060.0 40.0 ces/3M

401

221.0 80.0 ces/3M

SS

163 L/gM 5DOB 872 L/gM DOC L/gM

NKT 001 L/gM

N 4HN 05 L/gM

: ( 0102-0302 )

4002 0007 =

/ . 05= DOB

/ . 56= SST

/ 002 =

% 5.2 =

/ . 872= )0001*05( )002*9.0(\= DOB

006( = 0001( / ) 05*00021) = DOB

/ . 163= )002*9.0(\)0001*56(= SST

087( = 0001( / ) 56*00021= ) SST

0102 :

501

-

61.5219/ vaQEPVls00468

8118*002*0.900468

**0.9 ===

- KvaQ == 0.1 nim0.52*0.33

- == nim*nim5.1185/ QvaQKls ) (

- KdvaQ =+= 0.22 xam12.5/2.43

- === xam*xam93.527504/ QdvaQKdls ) (

-

:0302

-

72.5217/ vaQEPVls00468

20331*002*0.900468

**0.9 ===

- 52.0=nimK* 53.0=1.0^5217.72

QwKdvaQ === xam2*xam*2*0408/ces ) (

601

: -

== nim*nim9.7\ QvaQKls ) ( - -

KdvaQ =+= 0.22 xam12.5/2.2

- === xam*xam06.576916/ QdvaQKdls ) (

: -

)dxamQ*2(=wxamQ

s/l 221= s\l 539.121=5769.06*2=wxamQ

:-

) + + (

)

( 0

.

701

: - 1

.

0102

0302

m 9.0 = H --

m52.0 = B -

:

mm 01

mm 8

6.0 m :

m5.0 :

82= 877.72= 5.0( )\ )800.0+10.0( :

(82*0.10*0.6)0.7 s\m = -0.221

V==

:

mm01 :

0000001 56 m3

801

/ 3 961.0 = 56*2952 =

3m 381.1 =961.0*7 =

3.1 : =

1 =

1 =

:

)onis()g*2/2^v()3/4(^)b/w(B=H

: H

( 54: ) O

s/ m 55.0: = V

10.0: = W

800.0 = : b

18.9 = = g

4.2= = B

m 4910.0=54nis)18.9*2\2^55.0(* 3\4^)10.0\800.0(*4.2=H

901

:

5 S\L 02

(: 0102 )

(: 0302 )

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0901(0.9)

0001*9.18*5*0.20 Y==

: -

0102

ces/L 08= wxam Q

s\L 6 :

m 52.0 =B

5260.0=52.0*52.0=H

s\m 83.0 =V

200.0=J

S\L 71 :

m52.0=B

m5231.0=35.0*52.0=H

011

s\m 25.0 =V

200.0=J

S\L02 :

m52.0=B

m51.0=6.0*52.0=H

s\m 45.0 =V

200.0=J

S\L 03 :

m52.0=B

m502.0=28.0*52.0=H

s\m 85.0 =V

200.0=J

L 04\ S :

m52.0=B

m52.0= 1*52.0=H

s\m 96.0 =V

200.0=J

L 08\S :

m52.0=B

m564.0=68.1*52.0=H

m 96.0=V\ s

200.0 =J

111

:

=B 52.0 =

532.0 =H =

:

mm2 =

mm3 =

m2.0 =

( m530.0)

m5.0 =

001= )300.0+200.0(\)5.0( =

/ 3.1= )2.0*300.0*001 ( \)80.0( =

:

- 0102

0302 - -

) (

- s\m ()53.0-52.0

211

mm2.0 )

(

( 06-02 )

s\m( 51.0-52.0 )

s52.13= T -

ces/3m80.0 = Q

3^m5.2 =52.13*80.0= V

m 5.0= H:

m1= B

= s 5.0*1 == 5.0 2^M

= V= 80.0\s\m61.0=5.0

= L= 5 =5.0\5.2 m

:

0.5(0.51)1 = BH==< /0.5

53551 = LH==

311

: 01 :

3^ 322.0 = 322= 563 \( )01*8118= 0102

3^563.0 = 563= 563\( 01*20331= ) 0302

: 7

0102 m165.1= 7 *322.0

0302 m555.2=7*563.0

=

m 3.1 = -1

m 1 = -2

m 1 = -3

:

% 04-%52( % ) 05-07 )

( DOB

:

( 6-2 : )

( 6-3 : )

* 2^ \ 3( ^ 52-57 )

411

:

.

S\L02 = 0102 :

:

d.2m\3m52: -1

= DOB

l\gm5.96= )001/52(*872

l\gm5.802=5.96-872

6 : -2

6 : -3

0102) (

0302) (

s\3m 20.0= S\L 02 :

3m 234= 0063*6*20.0 =

= \ =

2m 07=21.96=52\42*0063*20.0=A

6= 07\234 : \ :

:

2m 07= 4( / 2D*41.3: )

01==4.9 D=

511

5.1= 01*51.0= D*51.0= d =

L03\S = 0302 :

d . 2m \ 3m 23 =

4 =

6 =

3m 234= 0063*4*30.0 =

18 2m= 23\)42*0063*30.0( =

6= 33.5= 234\18 =

01 =

5.1= 51.0*01 =

= 01 =

5.1 = 6

:

: -1 % 06 -2 04 = % 69 -3= 00021 ss -4

gk087=)0001\56*00021(

864= 6.0*087 =

3 7.11 = 864\04 =

)h(*)2br(*)3\41.3( =

)h\br( =03gt

)3\41.3(*)03gt\3br(= =

3br*18.1 =

611

8.0 =

( 57.0-8.0-1-2.1 )

7.11=)3^8.0(18.1 - 3br*18.1=

m2=br

711

:

:

:

:

. )4-8( -

vaQ)52.0-57.0( -

)51-5( -

)2.0-4.0( )M/F( -

5DoB

)SSLM(

)0051-0003( -

/ .

yad.3m\ DOB gk( 3.0-6.0 : )

( % 58-59) DOB

:

: ) (

:

3.0= M\F

0052= SSLM

0571 = 7.0*0052= SSVLM

\ 3 8271 = \ 3 20.0( : = 0102 )

3.0= M\F :

DOB 163= 8271*802.0= F

gK 3021= 3.0/163= M

811

SSLM =0052

0571=SSVLM =0052*7.0

3 886= 3 5.786= )3021\57.1( =

5 =

2 831 = 6.731 = 886\5 = / =

21 = 7.11 =

0271= 5.2*886 =

/ 352 7.0*163=7.252= =

8.6 = 0271\352 =

6.9= 55.9= 42* 893.0= 886\8271 =

0302 =

/ 3 2952/ = 3 30.0 =

= 3.0= M\F

045= 631.935= 802.0*2952= F

0081= 045/3.0= M

0052= SSLM

0571= 7.0*0052= SSVLM

3 9201= 75.8201= 0081/57.1 =

5 =

2 602= 8.502= 9201\5 =

51 = 53.41 =

911

3752= 5.2752= 5.2*9201 =

/ 873= 7.0*045 =

8.6= 3752\873 =

5.9= 42 * 793.0= 9201\2952 =

51 =

5 =

= / )

(

33.0( = 0052\0052-00001 = )

:

gk 6.1-4.1( DOB

2.1 5DoB gk1 )2O/

3-01* )01-802( *2952 * 2.1 =

= d/ gk 816

: -

-682 )E &M( - 782

021

02 ***1.420* ) (

=

T

WS

WS

CCBAFC

RTOSRTOA

:

: . RTOS

: . RTOA

2O L/gm 80.9 =wsC

59.0 =B

1 = AF

L/gm2 = C

58.0 =

*1.420*0.58 ) ( 89.279=9.80

9.80*0.59*12816

0202

RTOS=

d\gk 379=89.279 =ROTS

5.1

d/ gk 0641=5.9541 = 379 * 5.1 =

: -

3m/gk 102.1

%2.32

)232.0*102.1 (/0641=

d/3m 0425=88.9325 =

)%03( -

d/3m 76471=766.66471= 3.0/ 0425 =

/ 3 20.0( = = 0102 : )

121

)E & M( )21-01( :

. 885

. 2/3( 61-23 : = )

( 2-6 = )

( 3-6 = )

0102/ 3 20.0 =

4 : =

4 =

3 882= 20.0*4*0063 =

2 27= 882\4 =

. 2/3 42= 20.0*42*0063\27 =

01 = 75.9 =

/ 3 30.0( = 0302 : )

3 =

4 =

3 423= 30.0*3*0063 =

2 18= 423\4 =

. 2/3 23 = 30.0*42*0063\18 =

2.01 =

01 =

5.1 = 4=

:

:

-

.

: -

. )03-02( -1

221

/ )5-3( -2

nim03 = T

/ 4 =

( 0302 ) s\3m 260.0= dxamQ

( 0302 ) d\3m 4.0725= dxamQ

( 0302 : )

:

/ . 280.12= )3-^01*4(*)0063*42*160.0(

= = t*Q= V03*4.0725 =8.901 =m 0113

06*42

:

m1( X.)4\3 X

V=1*X*)4\3(*X :

X*X*)4\3( = 011

21= X =

9=

3= )1\3(* 9 =

= m2.0 5 m1

m 3=2.0*1*3*5

321

) (

2 311= 3+011 =

X*X*)4\3( =311

82.21 =

12.9 =

90.4 ( = 82.21( ) 1/3= ) X( 1/3 )

50.2= 6 /82.21 = 6\X

41.6( = 12.9( * ) 2/3 = )

70.3( = 12.9( * ) 1/3 = )

3.1 = m3.0

, :

.

421

00021 : = -1 087= 0001\00021*56( = ) ss

04% 69 =

% 06 =

074= 864= 6.0*087 =

=

: -2

( ) 01% 99 =

= DOB

DOB 006

% 52

051= 52.0*006 = DOB

054= 006-051 = DOB

DOB% 05

522= 054-522 = DOB

DOB% 01= DOB

52 = 22 =

002= 522-52 =

11.572104

074*1V===

006 YgK0001

05*00021==

521

=

0102^3 == VM 002*1

3 23= 02+21=

076= 074+002 =

=

52.12= )X*23(=)01*02(+)04*21( =

% 9.79= 578.79 =

: ) (

.

: -1

.

( % 9.79 )

( . %49 )

= 61.11= 076/06 =

3 2.11

3 8.02= 23-2.11 =

=

3 23 =

( 00012= ) SSLM

076 =

% 9.79 =

42 = 02-03( : : )

4 :

3 23 =

621

2 8= 23/4 =

2 4= 8/2 =

3 =

: : -2

% ( : 49 )

. 076 =

. 02( = 03 54 = )

. 4 =

% 06

/ . 204= 6.0*076 =

/ . 862= 204 076 =

% 04

/ . 142= 6.0*204% = 06

=

/ 905= 142 + 862 + =

3 21 =

/ . 24 = 905 / 21 =

% 8.59=

. 4 = 4 =

: - 3

721

)51-52(

.

)51-02(

)07-57%(

.

% 8.59 =

. 51 =

. 52 =

.

2 0002( = 51.0( / ) 21*52 =)

2 004 = 5

3 =

52 =

61 =

821

.- : -

= LH L *V2 D g2

=g8 2C

= C1 R 6/1 N

= RD 4

n 10.0 = N

-

* K = fHV2 g2

921

K 5 .0 = K 1 = K

: - * K = fHV2

g2

52.1 = K : -

5.0 ^)hg2( A36.0 = Q -

0.76

1.28*

=

L HQ

= LWT 565.453 m -

/mc5 /-

. / mc01/

)m( )m(

ces/3m

221.0 = wolf xaM 160.0 1.0 514.453

58310.0 1.0 - = wolf evA

7720.0

58400.0 1.0 - = wolf niM

7900.0

. / mc01/ -

:

)m( )m(

ces/3m

221.0 = wolf xaM 160.0 1.0 513.453

= wolf evA 58310.0 1.0 -

031

7720.0

58400.0 1.0 - = wolf niM

7900.0

: -

. /m5.0/ = -

m L

0.461 hQ0.51.28

0.1601.28

0.760.76

=

=

=

: /mc01/ -

m462.0 = h

: -

)m( )m(

ces/3m

221.0 = wolf xaM 160.0 462.0 150.453

58310.0 - - = wolf evA

7720.0

58400.0 - - = wolf niM

7900.0

-

:

. )2-1(

. mm 003= D :

. m01 = L .1 .ces/m 627.1 = V .2 . ces/3m221.0 = Q .3

m 223.0 = H .4 :

131

== 453.1500.223353.927 LWTm :

: -1 . /m1/ 2

: 0.76

1.28

=

L HQ

/mc01/

:

m 302.0= 1.0+301.0

)m( )m(

ces/3m

221.0 = wolf xaM 160.0 302.0 6250353

58310.0 - - = wolf evA

7720.0

58400.0 - - = wolf niM

7900.0

: -2 . ) 4 3 (

. mm002= D -

. m03 = L -

. ces/m49.1 = V -

. ces/3m160.0 = Q -

. m 109.0 = H ) ( -

:

== 353.6250.109253.526 LWTm : -

. m01

0.301 Hm1.282

0.76 0.221=

=

231

4 .1 mc 03

=H m600.0 : .2 ( . 09) mm 052 V .3

m= 2313.61401 = =

0.052 = 82123

( xamQ) == Qm3 /20.221/20.160ces -

: -821 = 0.7740000.160

-0.4

1.83540.774000

+

=gt

H

H= mc 52.14 = m 52140.0

44740.0 = 51.1 * 52140.0 = H m 51.1

mc 47.4=

ces/3m 58310.0 = 2/ Q : -

0.8010003/ces 821 =m 0.58310

0.97220 Hm 1.831

0.4 0.801000=

=

= mc3.2

51.1

mc5620.0 = 51.1 320.0

mc56.2 5620.0 = H

: -

mmcHmcm

Q

0.5101.510.527101.5270.894101.50.510

0.987300008210.58400

42

0.584000.7900

=====

=

==

mc03 = H, mc08 = B, 5030.0= Q :

331

) (Lhmmc

mAVQ

HBRBH

060.40000.400.5

0.7210.310

0.721/ces0.42

0.50300.80.3

0.5030

0.50.840.42

20.30.80.30.8

2

2

== 0.76

=

==

==

==+

=

+

=

: -

m 4040.0 = 4000.0 + 40.0 = H

/ 01/ mc -

: -

m m 8425.253 = 1.0- 8426.253

( : 6- 5 )

. mm002 = D -

. m02 = L -

. ces\m 49.1 = V -

Q ces/3m 160.0 = -

m796.0 = H -

Q 2/Q H /m/

221.0= xaM 160.0 796.0 8728.153

7720.0 = evA 58310.0 796.0 -

7900.0 = niM 58400.0 796.0 -

( :2( ) 1 ) -3 : ) 78 (

. mm003= D -

. m04 = L -

. ces/m 27.1 = V -

. ces/3m 221.0 = Q -

. m 206.0 = H -

/m/ Q 2/Q H

431

221.0 = xaM 221.0 206.0 8522.153

7720.0 = evA 7720.0 206.0 -

7900.0 = niM 7900.0 206.0 -

vaQ 33.1 = RQ :

33.1= RQ* 8630.0=7720.0

Q ces/3 m RQ + Q ces/3 m

xaM 221.0 xaM 8851.0

evA 7720.0 evA 5460.0

niM 7900.0 niM 5640.0

( : 2( ) 2 )

: ) 901 (

. mm004= D -

. m03 = L -

. ces/m 62.1 = V -

. ces/3m 8851.0 = Q -

. m 522.0 = H -

/m/ Q Q H

8851.0 = xaM 8851.0 522.0 8000.153

5460.0 = evA 5460.0 522.0 -

5640.0 = niM 5640.0 522.0 -

:

. /m5.2 /

: 0.76

1.28

=

L HQ

0.601 Hm

1.282.50.76 0.8851

=

=

531

602.0= 1.0+601.0 = 01

:

/m/ Q Q H

8851.0 = xaM 8851.0 602.0 8497.053

5460.0 = evA 5460.0 602.0 -

5640.0 = niM 5640.0 602.0 -

( :2 ) -4 : . )11 - 21 (

. mm003= D -

. m02= L -

. ces/m 21.1 = V -

. ces/3m 4970.0 = Q -

. m 571.0 = H -

/m/ Q 2/Q H

8851.0 = xaM 4970.0 571.0 8916.053

5460.0 = evA 3230.0 571.0 -

5640.0 = niM 3320.0 571.0 -

:

: /m 41 /

: 0.76

1.28

=

L HQ

121.0 = 1.0+120.0 = 01

:

0.120 Hm1.2841

0.76 0.4970=

=

631

/m/ Q 2/Q H

8851.0 = xaM 4970.0 121.0 8894.053

5460.0 = evA 3230.0 121.0 -

5640.0 = niM 3320.0 121.0 -

) ( : -5 : ) 2.0 * 1 ( /8/

2m6.1 = 2.0 * 1 * 8= A

. 5.0) hg2 ( A36.0 = Q

Q 2/Q H /m/

8851.0 =xaM 4970.0 3000.0 5894.053

5460.0 = evA 3230.0 - -

5640.0 = niM 3320.0 - -

: /m 41 /

: 0.76

1.28

=

L HQ

121.0 = 1.0+120.0 = 01

:

/m/ Q 2/Q H

8851.0 = xaM 4970.0 121.0 5773.053

5460.0 = evA 3230.0 121.0 -

5640.0 = niM 3320.0 121.0 -

0.120 Hm1.2841

0.76 0.4970=

=

731

: -

. )31 41 (

. mm003= D -

. m02 = L -

. ces/m 21.1 = V -

. ces/3m 4970.0 =xamQ -

. m 571.0 = H -

-

: ) 2 ( -

Q 2/Q H /m/

8851.0 =xaM 4970.0 571.0 5202.053

5460.0 = evA 3230.0 571.0 -

5640.0 = niM 3320.0 571.0 -

. ) 3 ( ) 3 ( -

: )51 61 (

. mm004= D -

. m02 = L -

. ces/m 62.1 = V -

. ces/3m 8851.0 = xamQ -

. m 5091.0 = H -

210.053= 5202.053 - 5091.0 : -

m

: -

. /m 5.2 / 0.76

1.28

=

L HQ

602.0= 1.0+ 601.0 : /mc01/ -

0.601 Hm1.282.5

0.76 0.8851=

=

831

m 608.943= 602.0 - 210.053 = -

Q 2/Q H /m/

8851.0 =xaM 4970.0 602.0 608.943

5460.0 = evA 3230.0 602.0 -

5640.0 = niM 3320.0 602.0 -

-

( 3 ) -

:

: )71 81 (

: .

. mm003 = D -

. m03 = L -

. ces/m 21.1= V -

. ces/3m 4970.0 = Q -

. m 412.0 = H ) ( -

:

m 295.943= 412.0 608.943

:

/ 01/ mc -

: -

m 294.943 = 1.0 295.943

. ) 4( -

. ) 02 91 (

. mm 002= D -

. m02 = L -

. s\m 49.1 = V -

. ces/3m160.0 = xamQ -

m796.0= H -

: ) 4 (

931

Q 2/Q H /m/

221.0 = xaM 160.0 796.0 597.843

7720.0 = evA 58310.0 796.0 -

7900.0 = niM 58400.0 796.0 -

: ) 4 ( -

. ) 22 12 (

. mm 003 = D -

. m 05 = L -

. s\m368.0 = V -

. ces/3m221.0 = Q -

m 996.0 = H -

: -

Q 2/Q H /m/

221.0 = xaM 160.0 996.0 690.843

7720.0 = evA 58310.0 996.0 -

7900.0 = niM 58400.0 996.0 -

:

m 9 = -

m 830.0 =H -

m 831.0= 1.0+ 830.0 = 01 -

-

Q Q H /m/

221.0 = xaM 221.0 831.0 859.743

7720.0 = evA 7720.0 831.0 -

7900.0 = niM 7900.0 831.0 -

: m9

041

0.83091.28

0.2211.28

0.760.76

=

=

=

L HQ

m 831.0= 1.0+830.0 = = /mc01/

m 28.743= 831.0 - 859.743 =

Q Q H /m/

221.0 = xaM 221.0 831.0 28.743

7720.0 = evA 7720.0 831.0 -

7900.0 = niM 7900.0 831.0 -

: -

. ) 32 42 ( -

. mm 003 = D -

. m 001 = L -

. ces/m 627.1 = V -

=Q 221.0 /3m ces -

. m 71.1 = H -

Q Q H /m/

221.0 = xaM 221.0 810.0 56.643

7720.0 = evA 7720.0 - -

7900.0 = niM 7900.0 - -

543 =

643 =

53.643 = 53

3.0+53.643( = 32-42%( )001 )

. 56.643=

141

-1 -2 -3

142

143

144

145

146

147

148

: : : 1 . (2-2)2 .(2-2 ) :( 1-2-2) : , .( 2-2-2 ) : (3-2) :(3-2-2 ) :(1-3-2) : :A _ : ( Preliminary Treatment ) .B ( Primary Treatment ) .D - :( Tertiary Treatment ) .E :( Sludge Treatment ) .( 2-3-2 ) :(1-2-3-2 ) :(2-2-3-2) :(1-2-2-3-2) : (5-2) (Coarse screens) 10 cm . (Medical screens) 4 cm. ( 6-2) ( Fine screens) cm 2 : . : . : (2.4) .w: .va: (m\s ) . .(2-2-2-3-2) :(3-2-2-3-2) :1 - : ( ) . . . .3 : : : (3 / ) . : ( Hydraulic Retention Time)4- :B ( 60-20) .(4-2-2-3-2) () :3 ( + ) . ( ) ( ) . :( 3-3-2 ) : :(1-3-3-2) :(2-3-3-2) ( ) :2 - : ( 8-2)A D(A-D) (9-2) : ( go and back ) . (go and back) (10-2) ( ) . :2 - . ( 11-2)4 : :83% .( 0.05-0.02) rpm .(4-3-2 ) : :a- :b- : ( Aerated Lagoon) .c- :(Biological or Trickling Filters).e : ( Stabilization ponds) . : : ( ): . : : : : . :B ( ) :(5-3-2) : : : . : : HOCL+Na+oH NaOcl + H2OHOCL H+ OCL (1 0.04 ) \ 4 . : :1 .2 .3 .4 .5 - .6 .7 .8 .9 .10- .11 . : = 7000 2004 : 2010 2030: ( + + ) ( 0 ) . 2010 2030 : = 2592*65 = 0.169 3 / :H=B(w/b)^(4/3)(v^2/2*g)(sino)H : O : ( 45)V : = 0.55 m / sW : = 0.01 H=2.4*(0.008\0.01)^4\3 *(0.55^2\2*9.81)sin45=0.0194 m (2010 ): (2030 ): = 90 % = 2010 :30 L\S : 80 L\SB=0.25mH=0.25*1.86=0.465mJ= 0.002 :( 0.035m ) = (0.5)\(0.002+0.003) =100 = (0.08)\ ( 100*0.003*0.2)= 1.3 / : (20-60 ) ( 0.25-0.15 ) m\s 2030 = ( 13302*10 ) \365 = 365 = 0.365^3 : : : ( 2-6 ) : ( 3-6 ) ( 75-25 ) ^3 \ ^2 * : :1- : 25m3\m2.d BOD =2- : 6 3- : 6 ( ) 2010( ) 2030 = 0.02*6*3600 = 432 m3 = \ =A=0.02*3600*24\25=69.12=70 m2 : \ : 70\432 =6 :=D 9.4==10 = d = 0.15*D = 0.15*10 = 1.5 = 10 = 6 = 1.5 : :M = 361/0.3 =1203 Kg2500= MLSS0.7*2500= MLVSS=1750 = (1.75\1203) = 687.5 3 =688 3 = 5 = / = 5\688 = 137.6 = 138 2 = 11.7 = 12 = 688*2.5 = 1720 ==252.7=361*0.7 253 / = 253\1720 = 6.8 = 1728\688= 0.398 *24 = 9.55 =9.6 = 2030 = 0.03 3 / = 2592 3 / F\M = 0.3 =F = 2592*0.208 = 539.136 =540 = 14.35 = 15 = 1029*2.5 = 2572.5= 2573 = 540*0.7= 378 / = 378\2573= 6.8 = 2592\1029= 0.397 * 24 = 9.5 = 15 = 5 = / ( ) = ( 10000-2500\2500 ) = 0.33 : (2010) = = 0.02 3/ : = (32-16) 3/2 . = ( 6-2 ) = ( 6-3 ) = 0.02 3/ 2010 : = 4 = 4 = 3600*4*0.02 = 288 3 = 4\288 = 72 2 = 72\3600*24*0.02 = 24 3/2 . = 9.57 = 10 : ( 2030) = 0.03 3/ = 3 = 4 = 3600*3*0.03 = 324 3 = 4\324 = 81 2 = 81\3600*24*0.03 = 32 3/2. = 10.2 = 10 = 4 =1.5 :