Method for controlling liquid level of aeration tank to be constant by surface aeration oxidation ditch process

Method for controlling liquid level of aeration tank to be constant by surface aeration oxidation ditch process

  • CN 102,897,908 A
  • Filed: 10/10/2012
  • Published: 01/30/2013
  • Est. Priority Date: 10/10/2012
  • Status: Active Application
First Claim
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1. surface aeration aeration basin in oxidation ditch process constant level control method, employed device comprises oxidation ditch (1), inverted umbrella-shaped surface aerator (2), water outlet weir gate (3), it is characterized in that:

  • described device also comprises liquidometer (4), liquidometer sleeve (5) and fluid level controller (6);

    Liquidometer and water outlet weir gate all are connected to an automatic control device;

    Liquidometer (4) is arranged in the liquidometer sleeve (5);

    Liquidometer sleeve (5) is fixed on effluent weir passage downstream 2-3m place in the oxidation ditch;

    Control method may further comprise the steps;

    1) will intake to the scale liquid position H of surface aerating machine of inverted umbrella in the oxidation ditch (1) 0H 0Be the liquid level under the submergence of the submergence liquid level under the efficient operation condition of inverted umbrella-shaped surface aerator (2) or manufacturer'"'"'s recommended;

    2) the liquid level H of setting automatic control device 0, with H 0Be set to the target liquid level;

    3) the normal operation of inverted umbrella-shaped surface aerator (2) in the oxidation ditch (1) is set liquid level 5mm if the liquid level of liquidometer (4) is higher than, and then reduces weir gate 3mm;

    Set liquid level 5mm if the liquid level of liquidometer (4) is lower than, weir gate 3mm then raises;

    Liquid level is controlled at H 0Within ±

    the 5mm;

    Water outlet weir gate (3) height is regulated by magnetic valve.

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