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城市污水处理厂基本流程 PowerPoint PPT Presentation


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城市污水处理厂基本流程. 第二章 污水的物理处理. 第一节 格栅和筛网. 格栅的 作用. 格栅由一组(或多组)相 平行的金属栅条与框架组 成,倾斜安装在进水的渠 道,或进水泵站集水井的 进口处,以拦截污水中粗 大的悬浮物及杂质。. 选用栅条间距的原则: 不堵塞水泵和水处理厂 站的处理设备。. 作用:去除可能堵塞水泵 机组及管道阀门的较粗大 悬浮物,并保证后续处理 设施能正常运行。. 格栅所截留的污染物数量与地区的情况、污水沟道 系统的类型,污水流量以及栅条的间距等因素有关, 可参考的一些数据:. 当栅条间距为 16~25mm 时,栅渣截留量为

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城市污水处理厂基本流程

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  • 16~25mm

  • 0.10~0.05m3/103m3

  • 40mm

  • 0.03~0.01 m3/103m3

  • 80%960kg/m3


45~60

60~70

1.2

2


XG







GL






0.4~0.9m/s


0.6~1.0m/s

1.2~1.4m/s

20



h2

h0-m

v-m/s

-10-4

-

g-m/s2

k-

k=3.36v-1.32k=3

0.1~0.4m


1.n

qvmax-

m3/s

d-m

h-m

v-

m/s

2.b

b-m

s-m

3.h

h-m

h2-m

h1-

h1=0.3m


4.L

L1-

m

b1-m

1-

1=20

L2-

L2=0.5L1

H1-m

  • 5.W

  • W1-m3/103m3

  • KZ-



    • 820




    5000mg/L




    1.

    Fg

    Fg-

    Fg-

    V-

    S-

    L-

    g-

    2.

    FD-

    -

    A-

    uS-



    • =24/Re


    uS

    • SLS-LuS

    • SLuS=0

    • SLS-LuS

    • uSd

    • uS



    • v

    • u


    v

    vui=u/v

    u

    v-

    qv-

    A-Hb

    H-

    b-


    • u0

    • uu010-12axyxy

    • u1<u010-12bxyxy

    • u1u0


    t

    u1u1<u0

    uu0 u1<u0

    u1dP%

    P0-u0

    1-P0-u0


    10-12

    qv/A-

    q

    u0q

    u0m/hq

    m3/m2hu0

    AH

    V



    Doer


    • 2

    • 2.650.2mm

    • 106m330m360%1500kg/m3

    • 255200mm

    • 0.3m



    • 0.3m/s,0.15m/s;

    • 30s,30~60s;

    • 1.2m,0.25~1.0m,0.6m

    • 0.01~0.02,


    1.L

    v-

    m/s;

    t-

    s

    2.A

    qvmax-m3/s

    3.b

    h2-m

    4.V

    X-

    30m3/106m3

    T-d

    kz


    • 7.h

    • h1-m

    • h3-m

    • 8.vmin

    • qvmin-m3/s

    • n1-

    • Amin-

    • m2

    5.

    b1=0.5m

    60

    b2

    V1

    h3-m

    S1S2-

    6.h3

    i=6%









    • 5%

    • 60~90cm

    • i=0.1~0.5



    0.1m/s0.4m/s

    5%




    • 0.08~0.12m/s

    • 4~6min1~3min10~30min

    • 2~3m1~1.555

    • 2.5~6.0mm0.6~0.9m

    • 10~6





    PISTA

    Pista360(360)


    PISTA


    PISTA


    PISTA

    • ;

    • ;

    • ;

    • 360360;


    PISTA

    PistaS&LPista 36068.6 Pa:

    d0.297 m m(50)95%

    0.211 mmd0.297 mm(5070)85%

    0.211 mmd0.149 mm(70100)65%

    0.11 mm(140)73%(WEFDesign of Municipal Wastewater Treatment Plants)


    PISTA


    PISTA


    PISTA








    VOTEX


    DOER


    DOER



    30%

    BOD555%







    1.

    30min

    2.

    2

    3.

    10-8

    4.10-9


    5.0.3m0.3~0.5m6055200mm

    6.2.9L/sm

    1.5~2.9 L/sm

    7.22

    8.14.71kPa1.5mH2O

    8.83 kPa0.9mH2O

    11.77 kPa1.2mH2O



    • 250m3/md130~250 m3/md

    • 1/2






    1.A

    qvmax-

    m3/s

    q-m3/m2h

    1.5~3 m3/m2h

    1~2m3/m2h

    2.h2

    t-h

    1~2h

    1.5~2.5h

    h22~3m

    3.V1

    4.L

    v-

    mm/s5mm/s

    5.b


    6.n

    b-

    30~50m

    44~5

    7.

    V

    S-L/d

    10-8

    N-

    T-d


    8.h

    h1-m

    0.3m

    h2-m

    h3-m

    0.5m

    0.3m

    h4-m

    h4-m

    h4-m

    9.V1

    S1-m2

    S2-m2

    10.

    V2

    L1-m;

    L2-m













    • v

    • u>vu-v

    • u=v

    • u<v


    32


    30mm/s

    100mm/s

    <20mm/s



    • 100m1.5~3.0m



    • 2/3















































    601.0m80~100mm0.7~1.0m1.0m





    10%~%15BOD515%

    100~400mg/L

    5%~8%1m30.5m3



    ,


    60%~80%60m

    100150m 60m

    1060m

    < 10m

    515mg/L



    • 100~150m0.9mm/s

    • 1.2m3/m2h2h


    60m

    0.2mm/s








    • --


    • --




    4m3/m2h

    10~20m3/h








    :

    g()/m3()

    :

    mL()/L()








    E

    - S -

    -1-1E1

    E2E

    10-40

    -

    10-38


    • 0cos1E0

    • 180cos -1E2-

    • 10-41



    -

    -Re<1-

    d--

    S--

    -v-Sd



    -

    10-42-




    pH




    30-50m


    • 10-43

    10-43


    DdI

    I

    1000~2000m3/(m2d)

    I

    2500~5000 m3/(m2d)

    h

    h1 -

    m

    h2 -

    0.2~0.3m

    h3 -

    1.0m

    h4 -

    1.0~1.3m



    TR


    • 2500~5000 m3/m2d

    • 0.8~1.3m

    • 0.6~1.0m

    • >0.6MPa


    10-44

    10-46

    10-45



    TS

    TS


    TJ

    1 2Kgf/cm2 303 99


    TV

    TVTS,TJ,,





    • 150~ 200m3/h






    • 2.0~2.5m10m15m

    • 5~15min

    • 0.1m/s10~20mm/s60s


    • Ac

    • vc

    • 60s

    • As

    • ()vs

    • 1:1~2:1

    • V

    • H

    • tt10~20min




    YF


    GQF


    GQF


    JQF


    JQF

    100m3/h


    JQF

    :


    JQF






    JQFW

    : JQFW

    :

    50100



    ABCD


    RQF

    1.400-500mm

    2.(3-5min)

    3.90%

    90

    RQF

    PACPAM(PAC400-1000mg /IPAMPAC1/5)10-15


    RQF


    RQF

    R=30q=68m/m.h


    TJ

    1 2Kgf/cm2 303 99


    RF


    RF

    30%

    35mh1530min


    RFA

    0.4Mpa


    GQF35min

    WQFWQFPH


    WQF

    .50PPM70.90COD60-70BOD50.COD70ss90.10MG/l.COD7493.95COD86.7.5

    1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14.


    JHDF

    1.20m2.3.99%99%4.SS5.80-100%36.

    1.5-10min2.4-9m/h3.2m4-5m4.30%10%



    JHDF


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