Corrosive wastewater treatment pipe systems can look forward
to a longer life with CPP’S HDPE corrugated pipes as well. Highly
Corrosive sanitary sewerage concentrated with caustic lyes, household
detergents, brighteners and bacterial elements have made CPP’S
HDPE corrugated pipes desirable for use in sewer plant filtration treatment
beds and sand filters. These HDPE Raw Material based pipes will not pit
or deteriorate due to Corrosive gases or liquids.
At points where topography and grade conspire to create a sewer flooding
backup overflow into an adjacent storm sewer system, CPP chemically inert pipes do not release additional chemicals along with the chemical treatment flush that is added to sanitize storm sewers contaminated with raw sewage back-up. Consequently, local receiving
waters are not further harmed with toxins. In industrial wastewater releases,
the common practice of dosing or diluting Corrosive fluids with water
to make the effluent less harmful to the pipe wall is generally not necessary; also supplemental coatings, plastic film envelopes or cathodic protection
systems are not needed with CPP’S Single Wall or Dual Wall Smooth
Core/n-10 corrugated pipes; in addition, labor intensive, field applied
protective coatings are not needed for a corrosive free coupling.
CPP offers a variety of non-pressure, gravity flow leak
resistant couplers that should be considered for use in chemically active
fluid transportation pipe systems. Leak resistant couplers are also a
must consideration in farm pond/stormwater retention pipe systems that
are generally embedded at non-cohesive soil sites. CPP Corrosion Resistant
pipes are also used in landfill leachate treatment pipe systems because
landfill leachate flow strengths change radically and frequently across
the pH scale.
|| CPP’S Dual and Single Wall pipes are used in surface and
subsurface, natural or built-up wetlands, and sand-pebble filters
for low cost small community wastewater treatment systems.
Corrosive wastewater and industrial treatment pipe systems
can look forward to a longer life with CPP's HDPE Single Wall corrugated
or CPP's Dual Wall Smooth Core/n-10 corrugated pipes. Used since 1968
in home septic systems, CPP pipes have demonstrated strong resistance
to corrosive wastewater environments, and is unaffected by pH ranges
from 1.5 to 14. Concentrated corrosive sewage consisting of caustic
lyes, household detergents, brighteners and bacterial elements make
CPP's HDPE chemically inert pipes desirable for use in sewer plant
filtration treatment, bed pebble-sand filter, oxidation ditch pipes
and flush lines. Animal wastewater treatment systems such as swine
houses and dairy facilities also prefer the use of CPP's inert HDPE
Wastewater lagoon discharge line.
Water Leak Resistant, Gravity Drain Couplers.
Mastic Wrap Couplers
Shear Gasket Gravity Flow Water
Resistant Couplers 4” to 8”
While some of the more tightly controlled manufactured
concrete pipes may show an initial roughness coefficient equal to
an HDPE pipe when first installed, the durability of HDPE over a
period helps preserve its roughness coefficient despite wear since
the chemically inert HDPE is less effected by pitting and corrosion.
This in turn reduces maintenance and replacement costs over the years.
Because the "n" factor remains more constant over the years
compared to the "n" factor of competing pipe raw materials,
Downsizing with CPP's Smooth Core on flat grades is possible. Using
smaller size CPP pipes at steeper grades to achieve higher flow rates
is also possible because HDPE raw material based pipes are more abrasion
resistant than competing raw material based pipes.
HDPE is the most chemically inert
of all plastics, thus making CPP’S corrugated pipe systems corrosion
resistant. According to Modern Plastics Encyclopedia Magazine’s
chemical resistance charts for HDPE molding and extrusion grade plastics,
HDPE has good resistance to a number of chemically active solutions
including the following:
Industrial & Wastewater Applications:
Sand-Pebble Sewer Filtration
Sludge Compost Systems
Inter Lagoon Transfer
Discharge Pipes – Gravity
Wetland Gated Furrow Pipes
Oxidation Ditch Furrow Distribution
Landfill Site Drainage & Gas