NA-06 - Cleaning: Flushing Methods

In addition to an introductory overview of the various flushing methods and the criteria that must be taken into account when selecting these measures.

This module focuses thematically on the physical properties of shafts and the different designs of flushing methods.

After completing this module, you will have a sound knowledge of:

process sequences in surge flushing;
influences on the efficiency of bed-load and suspension waves;
differentiation of surge flushing devices according to their constructive design or technical equipment;
process sequences in back-up flushing and their application limits.

Slides in this presentation

1.	Overview of the cleaning methods
2.	Criteria for the selection of the cleaning process - löschen wenn es wieder geht
3.	Flushing methods
4.	Surge flushing
5.	Surge flushing – Definition
6.	Surge flushing - Process
7.	Surge flushing – Process description
8.	Surge flushing – Surge wave flow conditions
9.	Surge flushing – Bed load and Suspension waves
10.	Surge flushing – Factors influencing efficiency
11.	Surge flushing – Effective range
12.	Surge flushing – Practical experience
13.	Surge flushing devices
14.	Surge flushing devices
15.	Surge flushing devices (2)
16.	Wastewater volume activated flushing system
17.	Wastewater volume activated flushing system
18.	Wastewater volume activated flushing system (2)
19.	Wastewater volume activated flushing system (3)
20.	Sealing devices (lifting, lowering, rotating)
21.	Automatic flush gate (without auxiliary energy)
22.	Automatic flush gate (without auxiliary energy) (2)
23.	Practical example I
24.	The Hydrass Valve
25.	The Hydrass Valve (2)
26.	The Hydrass Valve (3)
27.	The Hydrass Valve (4)
28.	Use parameters
29.	Practical example II
30.	Flush gate
31.	Operating principle
32.	Operating principle (cont.)
33.	Mechanically working flush gate (with auxiliary energy)
34.	Arched flush gate
35.	Arched flush gate (2)
36.	Flushing weir
37.	Flushing weir - Example
38.	Flush sluice
39.	Inflatable pipe plug
40.	Inflatable pipe plug (2)
41.	Inflatable pipe plug
42.	Rotating elbow
43.	Rotating elbow (2)
44.	Rotating elbow
45.	Tipping bucket, Pivoting drum, Flushing manhole
46.	Tipping bucket, Pivoting drum, Flushing manhole (2)
47.	Flushing methods with reservoir -Tipping bucket
48.	Tipping bucket
49.	Cleaning phases
50.	Dimensioning and selection
51.	Dimensioning and selection
52.	Flushing using a flushing chamber
53.	Flushing using a flushing chamber
54.	Vacuum operated flushing chamber
55.	Vacuum operated flushing chamber (2)
56.	Flushing chamber with a flush gate
57.	Flushing chamber with a flush gate (2)
58.	Surge manhole flushing systems
59.	Surge manhole flushing systems
60.	Surge manhole flushing systems (2)
61.	Surge manhole flushing systems (3)
62.	Flushing method recommendations
63.	Recommendations
64.	Recommendations (2)
65.	Recommendations- Operational concept
66.	Operational concept – Step 1
67.	Operational concept – Step 2
68.	Recommended fields of application
69.	Operational concept – Step 3 and 4
70.	Operational concept – Step 5
71.	Operational concept – Step 5 (design tables)
72.	Operational concept – Step 5 (design tables) (2)
73.	Operational concept – Step 5 (Number of surge waves)
74.	Surge flushing methods applications - Conclusion
75.	Surge flushing methods - performance comparison
76.	Surge flushing methods - applications
77.	Back-up flushing
78.	Process description
79.	Limitations
80.	Equipment
81.	Cleaning balls
82.	Definition
83.	Ball types
84.	Beaded balls
85.	Beaded ball diameters
86.	Process description
87.	Process description (2)
88.	Cleaning balls – Recovery
89.	Cost comparison - Channel in Göttingen
90.	Cost comparison - Channel in Bielefeld (Germany)
91.	Flushing shield
92.	Definition
93.	Cleaning personnel
94.	Cleaning vessel
95.	Cleaning vessel use parameters
96.	Process description
97.	Flushing shield – Oval example
98.	Flushing shield – Rectangular example
99.	Operational experience
100.	Operational experience (2)
101.	Operational experience (3)
102.	End of module

Publisher: Prof. Dr.-Ing. Stein & Partner GmbH, Editorial: STEIN Ingenieure GmbH (2012)

Domain

Cleaning

Keywords

Cleaning