JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 111

Tab. 1: Characteristics of Polistok pipe filters

Unit size

STF
50

STF
80

STF
100

STF
130

STF
150

STF
200

STF
230

STF
300

STF
440

Internal diameter, mm

50

80

100

125

142

174

210

267

416

Length of one module, m

0.5 to 3.4

Type of pipe filter connection

Bell-spigot, socket-coupled, flanged, threaded

Cell size of the filtering web, mm

0,1’ x 0,2 to 1,0’ x 2.0’’

Working temperature, °C

−60 to +60

Filtration index, m/day

300 to 1,500

enough to protect the filtering layer
from deformations (especially stripping) related to casing manipulations.
This type of GRP radial drainage
filter could be particularly suitable for
construction works in the tight sites
typical of modern cities.
Fig. 5: Toroidal type STF-80 air-dispersing element
used to supply air pressure to a wastewater
biochemical purification reactor (source: Polistok)

Fig. 6: Hybrid PVC-GRP well filter design produced
by Polistok (source: Polistok)

operating experience. Originally, they
were used in water supply (freshwater
wells) and wastewater systems as a
drainage-distributing system for highspeed filters, and in drainage systems
at sludge sites. Later on, they were
also used in hydro-energy construction, and in case of landslide hazards.
Current applications for bundlewound GRP pipe filters also include
horizontal and radial drainage systems,
well points in vacuum water drawdown
installations, direct river water intakes,
clearing filters for waste and technological water, and ventilation drainage systems. One of Polistok’s latest
developments is a GRP filter for radial
drainage wells that is strong and elastic

Others players
Similar bundle-wound GRP pipe filter
designs are available from Potok-M, a
company of the MashSpezStroy group,
and from the Vozrozhdenie group of
companies (“Renaissance” in English),
both based in Perm city, Russia.
This type of bundle-wound GRP pipe
filters is expected to position better
in moveable soils than drainage pipes
made by perforation of more rigid
pipes, like centrifugally cast GRP
pipes (Hobas-type) or continuously
wound GRP pipes with a sand-containing structural layer (Amiantit type).
The Uralstavan-Engineering company
(Yekaterinburg, Russia), a member
of the Vozrozhdenie Group, has been
producing bundle-wound porous

Fig. 7: Pipe filters produced by Potok-M

No79 March 2013

Fig. 8: Pipe filters for sewage treatment systems.
Material: glass fibre, internal diameter: 80-300
mm, max. length: 9 m, max. operating temperature: +90°C, max. working pressure: 1 MPa (10
atm), type of pipe connection: plugs

GRP pipe aerators since 1995. Since
then, despite the lack of any technical
service or maintenance, these aerators have not been affected by mud
clogging and have kept their original
hydro-dynamic properties. When
clogging of the small drilled openings
in steel pipes is unavoidable (and this
requires unloading and cleaning, or
even exchange of the air tanks every
5 years on average), Uralstavan-Engineering emphasizes a unique property of GRP to prevent the growth
of microorganisms, as is confirmed
by prolonged practical operation. So
GRP makes it possible to create small
(3 mm diameter) openings to form
small air bubbles and provide a higher
aeration speed.
Because the efficiency of the aeration
system will determine the energy
consumption of the waste-water system, the absence of clogging (which
finally results in complete occlusion
of the aerator) provides substantial
savings (up to 40%) in municipal

/ jec composites magazine 111



JEC COMPOSITES MAGAZINE - Issue #79 - March 2013

Table of Contents for the Digital Edition of JEC COMPOSITES MAGAZINE - Issue #79 - March 2013

Cover
Edito
Point of view: research & industry
Contents
Agenda of Events
COMPANY & BUSINESS
- In brief
- Core materials
APPLICATIONS
- Formula 1
- Equipment
- Wind energy
MARKET
- Europe
- Patents
FEATURE SPECIAL JEC EUROPE 2013
- Turkey, country guest of honor
- 7th International Composites Summit
- JEC Europe lnnovation Awards Programme
- lnnovation report and news
- Sustainability
RESEARCH & DEVELOPMENT
- Additive
- Fabric
TECHNOLOGY & INNOVATIONS
- Process
- Matrix
- Nano
- Resins
- Process
Index
In the world
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - Cover
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 2
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - Edito
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - Point of view: research & industry
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 5
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - Contents
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 7
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 8
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 9
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 10
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 11
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - Agenda of Events
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 13
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 14
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - - In brief
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - Ad1
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - Ad2
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 16
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 17
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - - Core materials
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 19
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 20
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - - Formula 1
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 22
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 23
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - - Equipment
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 25
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - - Wind energy
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 27
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - - Europe
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 29
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 30
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 31
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 32
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 33
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - - Patents
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 35
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 36
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 37
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - - Turkey, country guest of honor
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 39
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 40
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 41
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 42
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 43
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - - 7th International Composites Summit
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 45
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 46
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 47
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - - JEC Europe lnnovation Awards Programme
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 49
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 50
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 51
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 52
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 53
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 54
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 55
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - - lnnovation report and news
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 57
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 58
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 59
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 60
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 61
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 62
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 63
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 64
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 65
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 66
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 67
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 68
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 69
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 70
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 71
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 72
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 73
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 74
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 75
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 76
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 77
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - - Sustainability
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 79
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 80
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 81
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 82
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 83
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 84
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - - Additive
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 86
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 87
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 88
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - - Fabric
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 90
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 91
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 92
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 93
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 94
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 95
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 96
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - - Process
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 98
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 99
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - - Matrix
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 101
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 102
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 103
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 104
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - - Nano
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 106
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 107
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - - Resins
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 109
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - - Process
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 111
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 112
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - Index
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - In the world
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 115
JEC COMPOSITES MAGAZINE - Issue #79 - March 2013 - 116
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