FLUID MECHANICS FOR APPSC CIVIL ENGINEERS EXAMSFull description
Laporan On The Job Training WTP (water treatment plant) DSS KARAWANG 1Deskripsi lengkap
Hydraulics
reviewer
Hydraulics
Full description
Hydraulics
hidraulica de perforacionDescripción completa
WTPFull description
Full description
Tidal Hydraulics
metode pelaksanaan pekerjaan instalasi pengolahan air (IPA)/Water Treatment Plant (WTP) Baja kapasitas 60 Liter/DetikFull description
design of WT
HYDRAULIC DESIGN OF 10.5 MLD ( 20 HOURS) W.T.P AT JAMAKHANDI SUMMARY OF COMPONENTS THE TREATMENT PLANT CONSISTS OF THE FOLLOWING UNITS: (1) AERATOR - 1 NO. (2) RAW WATER CHANNEL - 1 NO. (3) FLASH MIXER- 1 NO. (4) CLARIFLOOCULATOR- 1NO. (5)FILTER HOUSE COMPLEX WITH A) FILTERS - 5 NOS ( EACH TWO COMPARTMENT ) (B) CHEMICAL HOUSE - 64 SQ.MTS (C ) OFFICE - 24 SQ.M (D) LABORATORY - 24 SQ,MTS (E) CHLORINATION ROOM - 20 SQ.M (F) CHEMICAL TANKS - 2 NOS 1000 LITRES EACH (6) PURE WATER SUMP - 10 LAKH LITRES (7) WASH WATER TANK - 2.5 LAKH LITRES PLANT PARAMETERS CAPACITY OF WTP = OPERATING HOURS = CAPACITY OF WTP FOR 24 HOURS
10.5 MLD 20 12.6 MLD
DISCHARGE PER HOUR PER MINUTE PER SECOND
525 Cu.M 8.75 Cu.M 0.146 Cu.M
1. AERATOR TYPE OF AERATOR AREA 0.015 TO AREA REQUIRED DIAMETER OF INLET CHANNEL HEIGHT OF AERATOR NUMBER OF STEPS RISE OF EACH STEP DIAMETER OF BOTTOM MOST STEP RADIUS OF BOTTOM MOST CHANNEL WIDTH OF COLLECTION CHANNEL
Sq.M/Cu.M Sq.M MM MM NOS MM MM SQRT (( AREA x 4 / PAI ) + ( INLET DIA.) ^2) MM MM
2. RAW WATER CHANNEL WIDTH OF CHANNEL DEPTH OF CHANNEL VELOCITY 0.8 TO AREA PROVIDED AREA REQUIRED DEPTH OF FLOW COLUMN SUPPORTS - 5000 MM C/C
750 750 1 0.56 0.18 243
MM MM MPS Sq.M Sq.M MM
AREA REQUIRED / WIDTH OF CHANNEL
3. FLASH MIXER DETENTION TIME 10 TYPE - CIRCULAR OR SQUARE SHAFT SPEED GREATER THAN VELOCITY GRADIENT IMPELLER DIA / TANK DIA. VERTICAL BAFFLES POWER REQUIREMENT DETENTION PERIOD = VOLUME REQUIRED = HEIGHT OF LIQUID = AREA REQUIRED = DIA. OF MIXER REQUIRED = DIA.. PROVIDED = VOLUME PROVIDED = LIQUID HEIGHT / TANK DIA. = FREE BOARD= HEIGHT OF TANK = SIZE OF TANK PROVIDED =
SECS 100 RPM 300 PER SEC TO 0.4 TO 0.084 DIA TO 3 WATT/Cu.M/HOUR SECS Cu.M MM Sq.M MM MM Cu.M
DTENTION TIME x DISCHARGE ASSUMED VOLUME / HEIGHT FROM AREA
MM MM DIA.
2800 MM HEIGHT
PROJECTION OF VERTICAL BAFFLES = 150 TO 126 MM PROVIDED 150 MM X 75 MM VERTICAL BAFFLES OF FOUR QUANDRANTS IMPELLER DIAMETER = 300 TO 600 MM POWER REQUIREMENTS POWER REQUIREMENT CONSIDERED = EFFICIENCY FACTOR MOTOR POWER REQUIRED = MOTOR PROVIDED =
2 WATT/Cu.M/HOUR 0.6 2.35 HP 2.5 HP
POWER ASSUMED IN RANGE
PIPE FROM FLASH MIXER TO CLARI-FLOCCULATOR VELOCITY RANGE = 0.3 TO 0.6 MPS VELOCITY ADOPTED FOR DESIGN = 0.45 MPS AREA OF PIPE REQUIRED = 0.32 Sq.M DISCHARGE/VELOCITY DIA. OP PIPE REQUIRED = 642 MM FROM AREA PROVIDE 750 MM NP2 RCC PIPE FROM FLASH MIXER TO CLARI-FLOCCULATOR
4. FLOCCULATOR SIDE WATER DEPTH = DETENTION TIME = PADDLE AREA = PADDLE REVOLUTION = VELOCITY GRADIENT = POWER CONSUMPTION =
2500 TO 30 MINUTES 10 TO 1 TO 20 TO 0.75 TO
TOTAL VOLUME OF FLOCCULATOR = SIDE WATER DEPTH = AREA OF FLOCCULATOR REQUIRED = DIA. OF INLET CHAMFER = THICKNESS OF INLET CHAMFER = TOTAL DIA. OF INLET CHAMBER = AREA OF INLET CHAMBER = TOTAL AREA REQUIRED = DIA. OF FLOCCULATOR REQUIRED = DIA. OF FLOCCULATOR PROVIDED =
PERCENT OFTANK AREA REVOLUTION PER MINUTE SEC KWH / MLD
Cu.M M Sq.M MM MM MM Sq.M Sq.M MM MM
DETENTION TIME X DISCHARGE ASSUMED PARAMETER VOLUME/DEPTH FROM AREA
POWER REQUIREMENTS C/S AREA OF FLOCCULATOR = 30.71 Sq.M GRADIENT VALUE = G = 40 MU = 0.0009 POWER REQUIRED = MU x G^2 x VOL.= 378 WATTS POWER SPENT/UNIT VOLUME = 1.44 WATTS MOTOR EFFICIENCY FACTOR = 0.75 POWER OF MOTOR REQUIRED = 0.68 HP PROVIDE 1.0 HP MOTOR FOR PADDLE DRIVING
RANGE : 0.75 TO 2 WATTS/Cu.M/Hr
PADDLE REQUIREMENTS VELOCITY AT TIP OF BLADE = 0.4 MPS VELOCITY OF WATER AT BLADE TIP= 0.1 MPS 0.25 x VELOCITY OF BLADE TIP Cd = 1.8 GAMMA = 1000 RELATIVE VELOCITY OF BLADE = 0.3 MPS AREA OF PADDLES REQUIRED = 15.56 Sq.M PADDLE AREA / FLOCCULATOR AREA = 50.65 PERCENT PADDLE AREA PROVIDED AS % OF C/S AREA OF FLOCCULATOR = 25 PADDLE AREA ADOPTED = 7.68 Sq.M PADDLE REVOLUTION = 1 RPM VERTICAL EDGE OF BLADE = 3841 MM
5. CLARIFIER DETENTION TIME = 2 TO SIDE WATER DEPTH = 2.5 TO SURFACE LOADING = 30 TO WEIR LOADING = BOTTOM SLOPE = 1 IN SCRAPING SYSTEM= 30 TO SHAPE = CIRCULAR VOLUME OF TANK = VOLUME OF TANK WITH 10 % OVERLOADING= SIDE WATER DEPTH = SIDE WATER DEPTH ADOPTED = SURFACE AREA REQUIRED = AREA OF FLOCCULATOR WITH INLET CHAMBER = AREA OF FLOCCULATOR +CLARIFIER =
DESIGN OF LAUNDER VELOCITY OF FLOW = 0.4 DEPTH OF LAUNDER = 500 WIDTH OF LAUNDER = 750 PERIMETER OF LAUNDER = P = 1750 AREA OF LAUNDER = A = 375000 HYDRAULIC RADIUS = 214.29 N-VALUE IN MANNINGS FORMULA = SLOPE REQUIRED =
M / SEC MM MM MM Sq.MM MM
M/SEC
=
0.013 0.00021
0.21
SLOPE
1 IN
M 4840.658 (NEGLIGEBLE)
OPENING FROM FLOCCULATOR TO CLARIFIER VELOCITY OF FLOW = 1 CM/SEC 0.01 M/SEC PERIMETER OF FLOCCULATOR WALL = 32.99 M CONSIDER 50 % OPENINGS LENGTH OF OPENINGS = 16.50 M AREA OF OPENING REQUIRED = 14.58 Sq.M DEPTH OF OPENING = 884 MM PROVIDE 1000 MM OPENING FOR 50 % OF PERIPHERAL LENGTH SLUDGE PIPE SLUDGE VOLUME = 2.5 Cu.M / MLD VOLUME OF SLUDGE = 26.25 Cu.M DESLUDGING PERIOD = 4 HOURS SLUDGE VOLUME / PERIOD = 4.375 Cu.M SLUDING DURATION = 10 MINUTES DISCHARGE = 0.007292 Cu.M / SEC VELOCITY OF FLOW = 1.2 MPS AREA OF PIPE REQUIRED = 0.006076 DIA, OF SLUDGE PIPE REQUIRED = 88 MM PROVIDED SIZE OF NP2-RCC PIPE FOR DESLUDGING =
300 MM
6. FILTER HOUSE TYPE : RAPID SAND FILTERS RATE OF FILTRATION = 80 TO OVER LOAD = 10 PERCENT LENTH / BREADTH = 1.11 TO BEDS FOR EACH FILTER = 2 RATE OF FILTRATION = 4.8 TO DISCHARGE INCLUDING 10 % OVERLOADING = RATE OF FILTRATION ADOPTED = AREA OF FILTERS REQUIRED = NO. OF FILTERS - EACH OF TWIN BED = AREA OFEACH BED = RATIO (LENTH / BREADTH) ADOPTED = BREADTH OF FILTER BED REQUIRED = LENTH OF FILTER BED REQUIRED = PROVIDE - 8 BEDS FOR 4 FILTERS OF SIZE =
100
LPM / Sq.M / HOUR
1.5 6 577.5 5.4 106.94
Cu.M / Sq.M/HOUR Cu.M / HOUR Cu.M / HOUR Sq.M
4 13.37 Sq.M 1.25 3.27 4.09 3300 4000 MM x MM
UNDER DRAINAGE SYSTEM AREA OF PERFORATIONS / AREA OF FILTER = 0.3 % TOTAL AREA OF PERFORATIONS = 39600 Sq.MM TOTAL AREA OF LATERALS = 2.5 X AREA OF PERFORATIONS AREA OF MANIFOLD = 1.8 X AREA OF LATERLAS = SIZE OF MANIFOLD PROVIDED = 450 450 LATERALS SPACING OF LATERALS = NO. OF LATERALS ON BOTH SIDE = AREA OF EACH LATERAL = DIA. OF EACH LATERAL = SIZE OF LATERALS ADOPTED =
175 38 2625 58 60
MM Sq.MM MM MM (ID)
AREA OF FILTERS X 0.3 99000 Sq.MM 178200 Sq.MM 202500 Sq.MM
LENGTH OF LATERAL =
1260 MM
(FILTER WIDTH x 0.9 - MANIFOLD) /2
PERFORATIONS 12 MM PERFORATIONS SIZE OF PERFORATIONS = 12 MM TOTAL AREA OF PERFORATIONS = 39600 AREA OF PERFORATION/AREA OF LATERALS (12 MM) = 0.5 SPACING OF PERFORATIONS = 250 NO. PERFORATIONS / LATERAL = 5 TOTAL NO. OF PERFORATIONS = 189 AREA OF EACH PERFORATION = 113.112 TOTAL AREA OF PERFORATIONS = 21378.17 PROVIDED (AREA OF PERFORATIONS / AREA OF LATERALS) =
Sq.MM
AREA OF FILTERS X 0
MM SAY Sq.MM Sq.MM 0.22
<
0.5
8 MM PERFORATIOPNS AREA OF PERFORATIONS ( 8 MM) = AREA OF PERFORATIONS - AREA OF 12 MM PERFORATIONS = 18221.832 Sq.MM SIZE OF PERFORATIONS = 8 MM SPACING OF PERFORATIONS = 200 MM NO. PERFORATIONS / LATERAL = 6 SAY TOTAL NO. OF PERFORATIONS = 226 AREA OF EACH PERFORATION = 50.272 Sq.MM TOTAL AREA OF ORIFICES = 11361.47 Sq.MM
5 MM PERFORATIONS AREA OF PERFORATIONS (5 MM) = AREA OF PERFORATIONS - AREA OF ( 12 AND 10 ) MM PERFORATIONS = 6860.36 Sq.MM SIZE OF PERFORATIONS = 5 MM SPACING OF PERFORATIONS = 140 MM NO. PERFORATIONS / LATERAL = 9 SAY TOTAL NO. OF PERFORATIONS = 339 AREA OF EACH PERFORATION = 19.6375 Sq.MM TOTAL AREA OF ORIFICES = 6657.113 Sq.MM TOTAL AREA OF PERFORATIONS (12+8+5)MM =
39396.75
>
39600
FILTER INLET CHANNEL OVER LOADING = 10 % DISCHARGE WITH OVERLOADING = = VELOCITY OF FLOW = 0.3 AREA REQUIRED = 0.40 WIDTH OF CHANNEL = 750 DEPTH OF CHANNEL = 750 AREA PROVIDED = 562500 DEPTH OF FLOW = 535 FREE BOARD AVAILABLE = 215
1.1 FACTOR 577.5 Cu.M / HOUR 0.16 Cu.M / SECOND TO 0.4 MPS Sq.M = 401042 Sq.MM MM MM SQ.MM > 401042 MM MM
WASH WATER TROUGH RATE OF WASHING = 600 LPM/Sq.M/MIN 0.01 Cu.M/SEC/Sq.M DISCHARGE REQUIRED / FILTER = 0.264 NO. OF TROUGHS / BED = 2 NO. BEDS / FILTER = 2 DISCHARGE / TROUGH = 0.066 Cu.M / SEC VELOCITY OF FLOW = 2 MPS AREA OF TROUGH REQUIRED = 33000 Sq.MM WIDTH OF TROUGH PROVIDED = 300 MM BREADTH OF TROUGH PROVIDED = 300 MM AREA OF TROUGH PROVIDED = 90000 Sq.MM > 33000 FILTER INLET CONDUIT DISCHARGE / FILTER INCLUDING OVER LOAD = VELOCITY OF FLOW = 0.4 MPS AREA OF PIPE REQUIRED = 100260 Sq.MM DIA. OF PIPE REQUIRED = 357 MM DIA. OF PIPE PROVIDED = 350 MM
0.04 Cu.M / SEC
FILTER OUTLET CONDUIT DISCHARGE / BED INCLUDING OVER LOAD = VELOCITY OF FLOW = 1.8 MPS AREA OF PIPE REQUIRED = 22280 Sq.MM DIA. OF PIPE REQUIRED = 168 MM
0.04 Cu.M / SEC
Sq.MM
DIA. OF PIPE PROVIDED =
200 MM
WASH WATER INLET CONDUIT WASHING RATE = DURATION OF WASH = PERIOD OF WASH = NO. OF FILTERS PER WASH = DISCHARGE = VELOCITY OF FLOW = AREA REQUIRED = DIA. REQUIRED = DIA. OF PIPE PROVIDED =
600 10 6 1 0.264 3.6 0.07 306 300
LPM/Sq.M/MIN MIN HOURS
600 10 6 1 0.264 2.4 0.11 374 400
LPM/Sq.M/MIN MIN HOURS
=
0.01 Cu.M/Sq.M/SEC
=
0.01 Cu.M/Sq.M/SEC
Cu.M / SEC MPS Sq.M MM MM
WASH WATER OUTLET CONDUIT WASHING RATE = DURATION OF WASH = PERIOD OF WASH = NO. OF FILTERS PER WASH = DISCHARGE = VELOCITY OF FLOW = AREA REQUIRED = DIA. REQUIRED = DIA. OF PIPE PROVIDED =
Cu.M / SEC MPS Sq.M MM MM
PAC TANKS DOSAGE OF PAC = 2.2 MG / LITRE QUANTITY OF PAC REQUIRED = 23.1 KG/DAY SOLUTION STRENGTH = 5 PERCENT QUANTITY OF SOLUTION = 462 LITRES = 0.462 Cu.M NO. OF TANKS PROVIDED = 2 SIZE OF EACH TANK = 1200 1200 1200 MM x MM x MM CAPACITY OF TANKS PROVIDED = 3.46 Cu.M CHEMICAL STORAGE AREA / CHEMICAL HOUSE QUANTITY OF PAC REQUIRED = STORAGE PERIOD = 90 STORAGE QUANTITY = 2079 CAPACITY OF EACH BAG = 50 NO. OF BAGS = 42 STORAGE HEIGHT = 1500 MOVEMENT AREA REQD. = 50 AREA REQUIRED AS PER TENDER = AREA PROVIDED (MM x MM ) = 4000
23.1 KG/DAY DAYS KGS. KGS. MM % 24 Sq.M 6000
24 Sq.M
(L x B)
7. WASH WATER TANK WASHING RATE = DURATION OF WASHING = PERIOD OF WASH = QUANTITY OF WATER REQUIRED = TANK CAPACITY PROVIDED = STAGING OF TANK = DIA. OF TANK = HEIGHT OF TANK = CAPACITY OF TANK PROVIDED =
600 LPM/Sq.M/MIN = 10 MIN 6 HOURS 158.4 Cu.M 200 Cu.M 9000 MM 7000 MM 5000 MM
8. WASH WATER PUMPS CAPACITY OF TANK = EMPTYING PERIOD OF TANK = PUMPING RATE = PUMPING HEAD INCLUDING HEAD LOSS EFFICIENCY OF PUMP = CAPACITY OF PUMP REQUIRED = CAPACITY OF PUMP PROVIDED =
200 6 0.009 15000 0.75 2.47 2.5
Cu.M Cu.M/SEC MM HP HP
CONDUIT FROM PURE WATER CHANNEL TO PURE WATER SUMP DISCHARGE WITH 10 % OVERLOAD = VELOCITY OF FLOW = AREA OF PIPE REQUIRED = DIA. OF PIPE REQUIRED = DIA. OF NP2-RCC PIPE PROVIDED =
9. PURE WATER SUMP
0.16 1.8 0.09 337 400
MPS Sq.M MM MM
0.01
CAPACITY OF TANK = DEPTH OF TANK = AREA OF TANK REQUIRED = DIA. OF TANK REQUIRED = DIA. OF TANK PROVIDED =
