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SEDIMENTASI
• PRASEDIMENTASI
• - sbg pretreatment, di awal proses
• - pada proses pengolahan konvensional
• - memisahkan partikel diskret
• - untuk air baku dengan kekeruhan > 200 NTU
• SEDIMENTASI/CLARIFIER
• - memisahkan partikel flokulen, Fe3+, CaCO3,
biologycal floc, carbon active (PAC)
• - dalam hal filtrasi langsung sed. Tdk diperlukan
• - Sebelum unit filter
Efisiensi mengendap partikel Diskret
• Diketahui dari:
1. percobaan settling test
2. secara teoritis ratio Vp/Q/Asurface
3. dengan kurva performance
-1/n
y/yo = 1 – (1+ nVs )
Q/As
Soal prasedimentasi
• Suatu partikel diskret dengan kecepatan
mengendap 0,7 mm/dt akan diendapkan
dalam bak prasedimentasi dengan debit
500 Lt/dt. Diinginkan efisiensi 75% dengan
kinerja verygood performance.
• Hitunglah ukuran bak jika kedalaman bak 3 m.
Dan ratio p:l = 4:1
• Hitung waktu detensi
• Hitung Bilangan Reynold (Nre) jika viskositas
kinematis 10-6
m2
/dt
Vs
Vs . Cos α
V - Vs . Sin α
Vs
Vs
Vs
300
25
0.8
2 m
Stl 60
3 m

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Presentasi tentang Sedimentasi.ppt-1.pdf

  • 1. SEDIMENTASI • PRASEDIMENTASI • - sbg pretreatment, di awal proses • - pada proses pengolahan konvensional • - memisahkan partikel diskret • - untuk air baku dengan kekeruhan > 200 NTU • SEDIMENTASI/CLARIFIER • - memisahkan partikel flokulen, Fe3+, CaCO3, biologycal floc, carbon active (PAC) • - dalam hal filtrasi langsung sed. Tdk diperlukan • - Sebelum unit filter
  • 2.
  • 3.
  • 4.
  • 5.
  • 6.
  • 7.
  • 8.
  • 9.
  • 10.
  • 11. Efisiensi mengendap partikel Diskret • Diketahui dari: 1. percobaan settling test 2. secara teoritis ratio Vp/Q/Asurface 3. dengan kurva performance
  • 12.
  • 13.
  • 14.
  • 15.
  • 16.
  • 17.
  • 18.
  • 19. -1/n y/yo = 1 – (1+ nVs ) Q/As
  • 20. Soal prasedimentasi • Suatu partikel diskret dengan kecepatan mengendap 0,7 mm/dt akan diendapkan dalam bak prasedimentasi dengan debit 500 Lt/dt. Diinginkan efisiensi 75% dengan kinerja verygood performance. • Hitunglah ukuran bak jika kedalaman bak 3 m. Dan ratio p:l = 4:1 • Hitung waktu detensi • Hitung Bilangan Reynold (Nre) jika viskositas kinematis 10-6 m2 /dt
  • 21.
  • 22.
  • 23.
  • 24.
  • 25. Vs
  • 26. Vs . Cos α V - Vs . Sin α Vs Vs Vs
  • 27.
  • 28.
  • 29.
  • 30.
  • 31.
  • 32.
  • 33.
  • 34.
  • 35.
  • 36.