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Treatment plant - air blower on timer.

  • 30-10-2016 12:35pm
    #1
    coillsaille
    Registered Users, Registered Users 2 Posts: 551 ✭✭✭


    I've had a search through the threads on treatment plants but can't find a definite answer to my question - how long should the air blower be running for?

    I have a treatment plant with 2 chambers and a percolation area. A float switch pump sends the effluent to the raised bed percolation area. It's all controlled by a computer unit and this unit has gone bust on me. I have been quoted E450 for a new computer unit which I simply can't afford at the moment, and not for several more months.
    So I have bypassed the computer unit and have connected the air blower and submersible pump directly to the mains, with the blower on a timer plug. Everything seems to be working fine, but I want to find out how often I should have the blower set to come on. Only two people in the house and the house is empty 8-5 Mon-Fri.
    I'd appreciate any guidance from anyone who knows a bit about these systems.


Comments

  • #2
    Metric Tensor
    Registered Users, Registered Users 2 Posts: 3,725 ✭✭✭Metric Tensor


    You're not going to like me for this but:

    It completely depends on the system you have - tank size, hydraulic retention, loading, etc. It should also vary - it won't be on for the same length of time every day.

    In order to get certification for the system the designers would have tuned the timing to make sure that the effluent coming out of the tank is of a certain quality. Without understanding all the parameters of the system including a working knowledge of BOD, SS, nitrification, denitrification, etc. you're just blowing air into sh*t and hoping for the best! Mind you there are plenty of cowboys out there selling systems that are doing just that!!

    A word of warning - if you send the wrong type or inappropriately treated effluent to your percolation area you could easily clog it.

    Any chance a tech friend can have a look at the controller unit? It's probably a minor problem - loose or corroded connection or something like that.


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