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  1. nackra

    Corrosive atmosphere from leaking hypochlorite tank?

    chemical supplier should provide SDS for hypochlorite https://olinchloralkali.com/wp-content/uploads/2019/06/Sodium-Hypochlorite-5-17_US_EN.pdf hypochlorite will definitely corrode metals. The hypochlorite concentration/strength will affect the amount of corrosion.
  2. nackra

    Septic waste disposal repair small area

    Mound system may work. The footprint may be too large to fit in a "small yard" https://www.nesc.wvu.edu/wastewater/onsite-wastewater-systems
  3. nackra

    Force Main Termination

    length of forcemain (long detention time) will impact the "aroma"
  4. nackra

    Questions for air pressure vessel in water system

    hydropneumatic tank with operating comments above: http://www.johnwood.com/wp-content/uploads/2014/02/Technical-Bulletin.Form-002.002.pdf
  5. nackra

    Raw sewage pipeline materiL

    DI pipe linings & coating will depend on your application (gravity or pressure), sewer characteristics and soil conditions. DIPRA has several publications that you should review: https://www.dipra.org/ductile-iron-pipe-resources/technical-publications/applications PVC is widely used for...
  6. nackra

    looking for non permeable "geotextile"

    http://www.fabseal.com/pit_liner_pond_liner_lagoon_liner.htm http://www.geocheminc.com/hdpealloy.htm I agree w/ PBroad and PatrickP - geomembrane is used for "barrier"
  7. nackra

    Bisected AWWA Storage Tank?

    Another point to justify new smaller tank is foundation design. Seismic may be another factor depending on location.
  8. nackra

    Estimating irrigation demand

    http://www.rainbird.com/ their design manual was recommended to me to check an upcoming project. Cursory review looks like it has good basic information.
  9. nackra

    Sodium Hypochlorite Off Gas Problems

    one of my Midwest clients had same problem & tried a series of retrofits with vent hoses routed back to bulk storage tank. Bulk storage tank adjacent to pump had vent, but tranfser pipe to pump was not "sloped" back UP to the tank. "crystallization" build-up in vent hose restricted...
  10. nackra

    PVC Water Main Information

    http://www.uni-bell.org try Uni-Bell
  11. nackra

    Ductile iron pipe

    Also, check your regulatory agency requirements, Illinois has some limitations for "old" sewer forcemain design. http://www.ilga.gov/commission/jcar/admincode/035/035003700D04700R.html
  12. nackra

    Waste disposal & treatment

    http://www.flygtus.com/19457.pdf one of my clients likes the "flush valve" w/ Flygt good luck nackra
  13. nackra

    individual wastewater treatment

    http://www.nesc.wvu.edu/nsfc/nsfc_index.htm National Small Flows Clearinghouse has some good refs. Mound systems have some limitations Sand filters (open and buried) option depending on variety of constraints Good luck
  14. nackra

    Large diameter FRP pipe

    http://www.hobaspipe.com/ http://www.meyer-polycrete.com/en/pipes/polycrete-jackingpipes.php Try these. Good Luck
  15. nackra

    flow regulator

    During the design phase I interviewed collection staff with client (Midwestern US) to review alternate regulator devices. Staff preferred vortex regulator over the hydroslide device, but based on your relatively low flow requirements the vortex regulator is probably NOT best choice. The client...
  16. nackra

    flow regulator

    I was working on CSO regulator designs a few years ago - you might consider the following: http://www.copa.zen.co.uk/hydroslide.htm There is another product that I will check design archive, but I believe that it is better application for larger Q situations. Good Luck
  17. nackra

    Water Line Insulation

    I've used Pittsburgh Corning products with aluminum jacket http://www.foamglasinsulation.com/product_info.html selection depends on several constraints - check with tech support for product to confirm
  18. nackra

    Pump house layout

    Check the attached USACE link for supplemental ideas http://www.usace.army.mil/publications/eng-manuals the EM 1110-2-3104 & 3105 mught be helpful
  19. nackra

    Need a drain valve?

    We used to just use hydrants (fire on large mains and flush on small mains) at or near high and low points on water mains to periodically "flush" mains.

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