Patent Publication Number: US-2013233703-A1

Title: Electrocoagulation reactor having segmented intermediate uncharged plates

Description:
RELATED APPLICATIONS 
     THIS application is a continuation of U.S. patent application Ser. No. 12/787,715, which is entitled “Electrocoagulation Reactor Having Segmented Intermediate Uncharged Plates” and was filed on May 26, 2010. 
     This application incorporates by reference, the following issued U.S. patents: U.S. Pat. Nos. 5,928,493; 6,294,061; and 6,689,271. 
     This application also incorporates by reference, the following applications: application Ser. Nos. 11/581,695, 12/787,715. 
    
    
     FIELD OF THE INVENTION 
     Wastewater treatment devices, more particularly, an electrocoagulation reactor having segmented intermediate plates between the oppositely charged plates. 
     BACKGROUND OF THE INVENTION 
     Electrocoagulation devices for treatment of wastewater may include parallel charged oppositely charged plates with solid intermediate uncharged plates therebetween. 
     OBJECTS OF INVENTION 
     An improved electrocoagulation reactor. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIGS. 1A and 1B  are an isometric and a side elevational cutaway view, respectively, of the electrocoagulation reactor on a support stand. 
         FIGS. 2A ,  2 B, and  2 C are illustrations of Applicant&#39;s segmented intermediate uncharged plates;  FIG. 2A  being an isometric view of a segmented intermediate plate having three segments;  FIG. 2B  being a front elevational view of a segmented intermediate plate having three segments;  FIG. 2C  being an isometric view of a single segment separate and apart from the plate itself. 
         FIG. 3  is an isometric view from the right side of an electrocoagulation reactor in an alternate preferred embodiment wherein the segmented plates are horizontal and are maintained in position by notches in the side wall. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     Applicant discloses an electrocoagulation reactor for treatment of wastewater, the electrocoagulation water for engagement with a DC power supply and a source of wastewater. The electrocoagulation reactor typically includes a housing having walls and one or more inlets for receiving wastewater therein. At least one anode/cathode pair of oppositely charged spaced apart plates are engaged with a power source to charge the anode with a positive charge and the cathode with a negative charge. Each pair has between it at least one segmented intermediate plate, which is not engaged with a power source and which segmented intermediate plate consists of multiple separate segments, which multiple segments lay together generally in the same plane. 
     Turning now to the drawings, it is seen that in  FIGS. 1A and 1B , an electrocoagulation reactor  10  is presented. At least one segmented intermediate plate  12  is provided between a pair of opposite charged plates, a cathode  20  and an anode  22 . 
     The electrocoagulation reactor  10  typically has a multiplicity of oppositely charged plates or anode/cathode pairs  20 / 22  and typically has a multiplicity of segmented intermediate plates  12  therebetween. For example, in  FIG. 1A , the electrocoagulation reactor  10  is seen to have nine pairs of charged plates  20 / 22  and each pair has three segmented intermediate plates therebetween with each of these comprising three segments. 
     Housing  24  may be provided, made of fiberglass or other typically non conductcive or inert materials (with respect to the wastewater). The housing may be square or rectangular and may include end walls  26 / 28 , side walls  30 / 32 , and, typically, a partial bottom wall  34  defining a bottom opening  35  therein. A generally open top  36  is provided and a sump  38  below bottom opening  35  is typically provided. At the bottom of the sump is a sump drain port  40 . The entire electrocoagulator reactor or the housing  24  may sit on a support stand  42 . 
     Turning back to the plates, it is seen that the electrocoagulation reactor is designed to receive all of the plates, the segmented intermediate plates as well as the charged plates, in a manner that keeps them spaced apart from one another, but parallel to one another. Moreover, it is seen that a cartridge  44  may be provided for this purpose, which cartridge typically includes side walls  44   a / 44   b  and end walls  44   c / 44   d . Both the bottom of cartridge  44  and the top are substantially open and it is seen that the perimeter at the bottom defined by the lower edges of the four walls  44   a / 44   b / 44   c / 44   d  sits along the perimeter defining bottom opening  35  in such a manner that wastewater entering wastewater inlets  48 / 50  will move up in parallel fashion between the plates and flow out the top edges of side walls  44   a / 44   b , which are slightly lower than end walls  44   c / 44   d.    
     Moreover, with reference to  FIGS. 1A and 1B , it is seen that the segmented intermediate plates are uncharged and the upper edges thereof are typically at or below the top edges of side walls  44   a / 44   b , while the bottom edge of the segment intermediate plates may be typically at or slightly above the bottom edge of the side walls. 
     The cartridge side walls have grooves or similar structure therein, which grooves are adapted to snugly hold the segments of the intermediate plates to maintain them vertically with respect to one another in the cartridge. 
     In an alternate preferred embodiment, the segmented intermediate plates can be adapted to be received in slots directly in the housing of or somehow otherwise engaged in the housing of the electrocoagulation reactor itself. That is to say, the segmented intermediate plates in the preferred embodiment are held in the cartridge, but as in other prior art electrocoagulation reactors, the side walls of the housing which hold the fluid therein can also be adapted by slots or other means known in the art to receive segments of a segmented intermediate plate as such prior art would receive a typical solid (unsegmented) uncharged intermediate plate. 
     That is to say, Applicant&#39;s novelty lies, in part, in providing a multiplicity of portions to a segmented plate rather than having an intermediate plate being fully integral. 
     It is believed that having a segmented intermediate uncharged plate between oppositely charged plates in an electrocoagulation reactor may more efficiently or effectively provide for the elimination of the harmful and deleterious components of the wastewater. 
     It may be seen that a segmented intermediate plate  12  may be comprised of two or more segments, here in  FIG. 2A , illustrating three segments  14 / 16 / 18 . In one preferred embodiment, each of the two or more segments are rectangular; here, segment  14  having side edges  14   a / 14   b , bottom edge  14   c , and top edge  14   d . Segment  16  likewise has edges  16   a / 16   b / 16   c / 16   d  in the same orientation. Last, segment  18  is seen to have edges oriented in the same manner edges,  18   a / 18   b / 18   c / 18   d . Side edges are intended to engage housing and/or cartridge as a full (unsegmented) intermediate plate or as a charged plate would. Yet, when the segments are inserted, they may engage adjacent segments in the manner illustrated, having a bottom edge of the segment above engaging or resting at least partially on the top edge of the segment below. That is to say, for example, in  FIG. 4A , it is seen that top edge  14   d  provides vertical support by engaging at least partially bottom edge  16   c  of the segment just above it. Likewise, top edge  16   d  may provide vertical support to bottom edge  18   c  of segment  18 . 
     Moreover, it is seen that the segments generally lay in the same plane and are generally, typically, tabular. Indeed, in a preferred embodiment, each segment may be rectangular. However, though the segments may be generally tabular, they need not have straight top and bottom edges, for example, see  FIG. 2B . Even when the top and bottom edges of adjacent segments are not straight, they are typically complementary so they can substantially rest in the manner illustrated and described. 
     The segmented intermediate plates may be made of mild steel or aluminum or a combination of conductive materials. While three segments are illustrated, a preferred range of 2 to 5 is indicated, for the number of segments per plate. While it is also illustrated that there are three segmented intermediate plates between adjacent anode/cathode pair, one segmented plate or up to five segmented plates between an anode/cathode pair are provided as a preferred range. 
     Further, one may combine, between anode/cathode pair, some intermediate plates that are segmented and some intermediate plates that are nonsegmented with some of the plates having a different conductive material than others. 
     Further, it is seen that, while in the preferred embodiment the segmented plates maintain vertically by vertical grooves, in an alternate preferred embodiment illustrated in  FIG. 3 , the segmented plates may be maintained at other configurations. In these other configurations, it may be preferred to have the edges that maintain the segments to apply some compression, so as to hold snugly the segments of a segmented plate so that their borders or edges are in contact. 
     As seen in  FIG. 3 , alternate embodiment  10 A has multiplicity of segmented plates  12 , wherein the plates are substantially horizontal and the segments engaged are horizontally trending notches  54  here in the side walls  56  of housing  60 , wherein the previous embodiment the notches are grooves in the side walls of the cartridge are vertical. So as to maintain the plates vertically, the notches, slots or guides in the side walls  56  turning horizontally and engage the side edges of the multiple plates to hold them in general parallel alignment. 
     The embodiment illustrated in  FIGS. 1A and 1B  is seen to be a parallel flow reactor. In the parallel flow reactor, a water molecule will typically make one path between the anode and the cathode to a charged field and, as seen here, will then flow out the top of the reactor portion of the housing (the cartridge). That is, the water enters below and each specific volume of water passes up between a single pair of plates before it undergoes treatment. 
     Turning to  FIG. 3 , a series flow reactor is illustrated. Here, water will enter typically at the bottom, in need of wastewater treatment, and treated wastewater will come out the top. However, the molecules will follow a serpentine flow and typically pass through each pair of spaced apart plates, rather than as in a parallel flow, just a single pair. 
     Although the invention has been described with reference to a specific embodiment, this description is not meant to be construed in a limiting sense. On the contrary, various modifications of the disclosed embodiments will become apparent to those skilled in the art upon reference to the description of the invention. It is therefore contemplated that the appended claims will cover such modifications, alternatives, and equivalents that fall within the true spirit and scope of the invention.