basics on screening and hydraulics...basics on screening and hydraulics mwea lagoon committee may...
TRANSCRIPT
![Page 1: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/1.jpg)
Basics on Screening
and Hydraulics
MWEA Lagoon Committee
May 2018
Presented by:
Steve Aiken
![Page 2: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/2.jpg)
BS Civil Engineering – Wayne State Univ.
20 years in Design, O&M Assistance and Commissioning
Michigan Class A Wastewater Operator
20 years in Plant Operation, Maintenance and Supervision
Steve Aiken
Regional Sales Manager – Duperon Corp
7 years in Sales
![Page 3: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/3.jpg)
Agenda: 1. General overview of different screening technology
2. Primer on Hydraulics
3. Wrap Up and Final Questions
Screening Overview
![Page 4: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/4.jpg)
BackgroundManual screens or
comminutors used
to be the only way
to remove debris
from the influent
![Page 5: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/5.jpg)
Different Screening
Technologies use different
types of bars, plates or screens
![Page 6: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/6.jpg)
Bars Come In All Different
Shapes
![Page 7: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/7.jpg)
![Page 8: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/8.jpg)
Perforated Plate
![Page 9: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/9.jpg)
Wedge Wire Screen
![Page 10: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/10.jpg)
![Page 11: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/11.jpg)
Different Types of Technology
Step Screen
Band Screen
Drum Screen
Climber
Helical Screw
Multi Rake
FlexRake – Sentinel FSP
![Page 12: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/12.jpg)
Technology
Step / Stair
Screen
DEFINED: Utilizes individual
screening elements mounted
vertically which travels up from
the channel floor – similar
operation to an up escalator
![Page 13: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/13.jpg)
![Page 14: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/14.jpg)
STEP SCREEN Advantages
1. Can clean channels with smaller openings
(channel depth)
3. Able to remove non-bulky debris—excellent as
secondary screen for smaller opening
Technology Step Screen
![Page 15: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/15.jpg)
Technology
Band Screen
![Page 16: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/16.jpg)
Screens that move
around tracks or
sprockets that utilize
woven wire mesh or
perforated plate, either
in a continuous belt or
interlocking panels
Technology Band Screen
![Page 17: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/17.jpg)
BAND SCREEN Advantages
1. Ideal for vertical applications
2. Can clean channels with smaller openings
(channel depth)
3. Able to remove non-bulky debris—excellent as
secondary screen for 1mm or 2mm
Technology Band Screen
![Page 18: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/18.jpg)
![Page 19: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/19.jpg)
DRUM SCREEN INTERNAL Advantages
1. Exceptionally fine screening available
2. No carryover
3. Available in-channel and above grade configurations
4. Common technology for membrane protection
Technology Drum Screen - internal
![Page 20: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/20.jpg)
![Page 21: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/21.jpg)
Technology
Drum Screen
- external
![Page 22: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/22.jpg)
Technology -
Climber or Reciprocating RakeClimber arm that operates along a track with a chain to drive the cycle arm
![Page 23: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/23.jpg)
![Page 24: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/24.jpg)
CLIMER RAKE
Advantages
1. No trapped sprockets/tracks or wear in the
channel
2. Cleaning/raking mechanism does not remain in
the channel
3. Cleans coarse screens
![Page 25: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/25.jpg)
Technology Helical Screw
DEFINED:
Cylindrical
screening basket in
the channel, solids
conveyed via helical
screw or augers
with brushes
![Page 26: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/26.jpg)
![Page 27: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/27.jpg)
HELICAL SCREW
Advantages1. Have some washing and light compaction all in
one unit – low capital cost
2. Ideal for low flow situations (up to 5 mgd) and
small channels
3. Completely contained process
![Page 28: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/28.jpg)
Technology
Multi Rake
![Page 29: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/29.jpg)
Flex Rake
![Page 30: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/30.jpg)
Bottom Sprocket
![Page 31: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/31.jpg)
Cantenary Screen
![Page 32: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/32.jpg)
CHAIN/SPROCKET - Advantages
1. Trapped travel of flights/chain operates in back
current
2. Trapped travel—operates in side currents
3. Torque overload protection/reverse shuts unit
down if unable to clear debris
4. Easy-to-understand technology
![Page 33: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/33.jpg)
Different Types of Technology
Step Screen
Band Screen
Drum Screen
Climber or Reciprocating Rake
Helical Screw or Basket
Multi Rake
![Page 34: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/34.jpg)
![Page 35: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/35.jpg)
AWWA
Hydraulics
for
Operators
![Page 36: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/36.jpg)
Continuity Equation
Q = AVFlow (Q) = Cross Sectional Area (A) x Velocity (V)
![Page 37: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/37.jpg)
Continuity Equation
Q = (W x D) * V
![Page 38: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/38.jpg)
Aver Max
Bar Opening (regression) (regression)
(in.) (f^3/MG) (f^3/MG)
0.125 15.4 32.3
0.25 12.3 24.9
0.375 9.8 19.1
0.5 7.8 14.5
0.625 6.2 11.0
0.75 4.9 8.3
1 3.1 4.9
1.25 2.1 3.1
1.5 1.4 2.3
1.75 1.0 1.8
2 0.8 1.5
2.25 0.6 1.2
2.5 0.4 0.9
2.75 0.3 0.8
3 0.3 0.7
3.25 0.3 0.6
3.5 0.2 0.4
As Slot Opening Decreases,
Debris Removal Increases
![Page 39: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/39.jpg)
Headloss Testing
Headloss vs. Approach Velocity
• Measured
• Calculated
![Page 40: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/40.jpg)
Test Channel
Storage
Tank
Slope Adjustment
Pump
Headloss Testing
![Page 41: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/41.jpg)
![Page 42: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/42.jpg)
Open Channel Flow Equations
Bernoulli – 1740’s
Darcy-Weisbach - 1845
Manning - 1870
Hazen-Williams – 1920’s
Kirschmer – 1920’s
![Page 43: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/43.jpg)
Commonly Used Equations in Open
Channel Flow
Bernoulli
Kirschmer HL = β (w/b)1.33 hv sin θ
HL = (V2-ν2)
C(2g)
![Page 44: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/44.jpg)
![Page 45: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/45.jpg)
ANY FINAL QUESTIONS?
![Page 46: Basics on Screening and Hydraulics...Basics on Screening and Hydraulics MWEA Lagoon Committee May 2018 Presented by: Steve Aiken. ... Can clean channels with smaller openings (channel](https://reader033.vdocuments.site/reader033/viewer/2022060921/60ad0b760326bb5f7c321556/html5/thumbnails/46.jpg)
Steve Aiken
Duperon Corporation
(O) 989-401-7710
(F) 989-754-2175
(M) 989 556-5265
1200 Leon Scott Court
Saginaw, MI 48601