Growth Media Wastewater Treatment Reactor

Abstract

A reactor chamber for placement in a wastewater treatment system, where the reactor chamber has a chamber formed from a sidewall which forms an interior of the chamber. The sidewall has a top portion and a bottom portion and fixed channel growth media positioned in the interior of the chamber. The fixed channel growth media is positioned below the top of the sidewall, so that when positioned in a treatment system, most of the growth media is located below the water level in the treatment system. The top of the sidewall near the water level (when positioned in a treatment system) is substantially impermeable to wastewater. The reactor includes an air distribution manifold system having a series of air release sites positioned below the fixed channel growth media and adapted to release air which disperses upwardly through the fixed channel growth media. Influent is discharged into the treatment tank near the air discharge sites.

1 . A treatment system comprising: 
 (a) a tank for processing wastewater, said tank having a water level;    (b) a growth media reactor positioned in said tank, said growth media reactor having a least one outer sidewall defining an interior forming a mixing zone, said at least one outer sidewall extending above said water level, said outer sidewall adapted to substantially fluidly isolate said interior of said reactor from the exterior of said reactor near said water level;    (c) growth media positioned in said interior of said growth media reactor;    (d) an outlet removing waters from said treatment system, said outlet exterior to said growth media reactor;    (e) at least one air discharge site adapted to be connected to an air source, said air discharge site positioned so that air released from said air discharge site will substantially flow and disperse upwardly through said growth media; and    (f) an inlet feeding wastewaters external to said tank for treatment in said treatment system, said inlet discharging into said tank near said air discharge site.    
   
   
       2 . A treatment system according to  claim 1  wherein said growth media comprises fixed channel growth media.  
   
   
       3 . A treatment system according to  claim 2  wherein said at least one sidewall is partially formed by a portion of said fixed channel growth media.  
   
   
       4 . A treatment system according to  claim 3  wherein said side wall is substantially impermeable to wastewater.  
   
   
       5 . A treatment system according to  claim 2  wherein said fixed channel growth media comprises a first component media and a second component media, said mixing zone having a wastewater circulation path having an upward flow portion and a downward flow portion, said upward flow portion substantially flowing through said first component media, said downward flow substantially flowing through said second component media.  
   
   
       6 . A treatment system according to  claim 5  wherein said first component media and said second component media each form channels having a respective minimum cross-sectional area, said minimum cross-sectional area of said first component media being smaller than said cross-sectional area of said second component media.  
   
   
       7 . A treatment system according to  claim 2  wherein said fixed channel growth media has a first component having cross flow channels.  
   
   
       8 . A treatment system according to  claim 7  wherein said fixed channel media has a second component substantially lacking cross flow channels.  
   
   
       9 . A treatment system according to  claim 2  wherein said fixed channel growth media is composed of a series of vertically orientated panels forming channels between adjacent panels.  
   
   
       10 . A treatment system according to  claim 7  wherein said cross flow channels are orientated at an angle from the vertical.  
   
   
       11 . A treatment system comprising: 
 (a) a tank for processing wastewater, said tank having a water level;    (b) a clarifier positioned in said tank defining a quiescent zone; (c) a growth media reactor positioned in said clarifier, said growth media reactor having a least one outer sidewall defining an interior forming a mixing zone, said at least one outer sidewall extending above said water level, said outer sidewall adapted to substantially fluidly isolate, in a region adjacent to said water level, said mixing zone from the exterior of said mixing zone;    (d) growth media positioned in said interior of said growth media reactor;    (e) an outlet removing waters from said mixing zone,    (f) at least one air discharge site adapted to be connected to an air source, said air discharge site positioned so that air released from said air discharge site will substantially flow and disperse upwardly through said growth media    (g) an inlet feeding wastewaters external to said tank for treatment in said treatment system, said inlet discharging near said air discharge site.    
   
   
       12 . A treatment system comprising: 
 (a) a tank for processing wastewater, said tank having a mixing zone and a dilution zone separated by at least one sidewall positioned in said tank; said mixing zone having a bottom portion in fluid communication with said dilution zone;    (b) said dilution zone and said mixing zone having a water level;    (c) an outlet positioned in said dilution zone, said outlet located at or below said water level in said dilution zone;    (d) growth media positioned in said mixing zone, said growth media positioned substantially below said water level;    (e) an air discharge site adapted to be connected to an air source, said air discharge site located near said lower portion of said growth media and positioned so that air released from said air release site will substantially flow upward diffusing only through said mixing zone; and    (f) an inlet positioned in said tank to discharge into said near said air discharge site.    
   
   
       13 . The treatment system of  claim 1  wherein said inlet is positioned below said air discharge site.  
   
   
       14 . A treatment system comprising: 
 (a) a tank for processing wastewater, said tank having a water level;    (b) a growth media reactor positioned in said tank, said growth media reactor having a least one outer sidewall defining an interior forming a mixing zone, said at least one outer sidewall extending above said water level;    (c) growth media positioned in said interior of said growth media reactor;    (d) an outlet removing waters from said treatment system, said outlet exterior to said growth media reactor;    (e) at least one air discharge site adapted to be connected to an air source, said air discharge site positioned so that air released from said air discharge site will substantially flow and disperse upwardly through said growth media; and    (f) an inlet feeding wastewaters external to said tank for treatment in said treatment system, said inlet discharging into said tank near said air discharge site.    
   
   
       15 . A method of treating wastewaters in a treatment tank, said wastewater having a water level in said treatment tank, said treatment tank including growth media positioned in said tank and at least one air discharge site, an inlet and an outlet, said method including the steps releasing wastewaters from said inlet into said treatment tank below said water level in said treatment tank and near said air discharge site, aerating wastewaters near said growth media so that air released from said air discharge site will substantially flow and disperse upwardly through said growth media; and removing wastewaters from said treatment tank through said outlet.