2Lluar Pluar 2 Ldalam P dalam m Actual beban weir Q p Actual panjang weir m 3

# 2lluar pluar 2 ldalam p dalam m actual beban weir q p

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= 2(L.luar + P.luar) + 2 (L.dalam + P. dalam) = = m Actual beban weir = Q p Actual panjang weir = = m 3 /m.d 2. Menghitung jumlah V-Notch 1 meter = 5 V-note. Total V-note = 5/m x actual panjang weir = 3. Menghitung tinggi aliran air (H) melewati V-notch C d = jarak beton dengan weir θ = derajat kemiringan V-notch (90) Ketinggian V-notch (H) = 8 cm i. Kec. Aliran saat debit rata2. = Q r Total V notch = m 3 /s.notch H 5/2 = Kec.aliranrata 2 8 15 ×C d × 2 tan θ 2 =
= m = cm ii. Kec. Aliran saat debit puncak = Q p Total V notch = m 3 /s.notch H 5/2 = Kec.aliran saat Qp 8 15 ×C d × 2 tan θ 2 H = H = m = cm 4. Mengcek kedalaman V-notch. H mak V-Notch : H at Q r : H at Q p 5. Sludge production Actual overflow rate = m 3 /m 2 .day Dari grafik di atas, dapat didapatkan data berikut Removal BOD 5 = % Removal TSS = %
Spesific gravity ( s ) = 1.03 Solid konten = 3 – 6%. Jumlah produksi solid per hari saat debit rata2 = Conc .TSS ( g m 3 ) × % removalTSS×Q r × 86 , 400 s / d 1000 g kg = Kg/day. Vol sludge = Jumlahsolid yangdiproduksi 1.03 × 1 g m 3 × 1 kg 1000 g × 0,045 × 10 6 cm 3 m 3 × 1440 m day = m 3 /min.basin 6. Effluent quality TSS influent = Conc. TSS × Q r × 86,400 s/d = = Kg/d TSS yg tersedimentasi di dalam sludge = TSS influent × % TSS removal = Kg/d = Volume sludge di dalam tanki = TSStersedimentasi ( Kg d ) % particle solid ×Sp.gravitiy ( 1030 kg m 3 )
= = m 3 /d 7. Scum Quantity Asumsi produksi scum = 8 Kg/10 3 m 3 Sp. Gravity scum = 0.95 mg/L = 950 Kg/m 3 Produksi scum = 8 Kg ×Q r × 86,400 s / d 1000 m 3 × 950 kg / m 3 = = m 3 /d Hasil perencanaan Komponen Influent Primary Sludge Primary Effluent Debit (Q), m 3 /d Conc. (Mg/L) Beban (Kg/d) Removal (%) Beban (Kg/d) Beban (Kg/d) Conc. (mg/L) BOD 5 TSS Org.-N COD NH + 4 Tot. Coliform

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