Wastewater treatment system for loading tablets into wastewater conduit

• US 5,885,446 A
• Filed: 04/10/1997
• Issued: 03/23/1999
• Est. Priority Date: 04/10/1997
• Status: Expired due to Fees

• Current Assignee: Henry E McGrew
• Original Assignee: Henry E McGrew
• Inventors: McGrew, Henry E. Jr.
• Primary Examiner(s): Drodge, Joseph W.
• Application Number:
  US08/833,919
• Time in Patent Office: 712 Days
• Field of Search: 210/85, 210/94, 210/95, 210/169, 210/198.1, 210/199, 210/754, 210/764, 210/91, 422/119, 422/264, 422/264 B, 422/265, 422/266, 422/274, 422/277, 422/278, 137/268, 239/34, 239/35, 239/310
• US Class Current: 210/91
• CPC Class Codes: B01F 21/22 using additional holders in conduits, containers or pools for keeping the solid material in place, e.g. supports or receptacles
• CPC Class Codes: C02F 1/688 Devices in which the water progressively dissolves a solid compound

Abstract

A wastewater treatment system for treating wastewater effluent flowing through a sewer pipe from a sewage treatment plant, and specially designed chlorine tablets for use in the treatment system. In a preferred embodiment the wastewater treatment system is characterized by a wastewater flow conduit which is mounted in the sewer pipe and a tablet loading neck, closed by a removable lid, extends upwardly from the wastewater flow conduit. A tablet support rod extends downwardly through the lid and tablet loading neck into the wastewater flow conduit. Multiple treatment tablets, each having a central opening, are slidably mounted on the tablet support rod in stacked relationship, and as the tablets in the wastewater flow conduit are dissolved by the flowing wastewater, the tablets in the tablet loading neck descend on the tablet support rod into the conduit, to replace the dissolved tablets. In another embodiment the tablet support rod is slidably mounted in the lid and biased upwardly and as the tablets are dissolved, the tablet support rod moves upwardly through the lid and is either visually inspected or attached to an alarm switch which activates an alarm to indicate the need for replacing tablets on the rod.

Claims

1. A wastewater treatment system for treating wastewater flowing through a conduit, said wastewater treatment system comprising a tablet loading neck constructed so as to extend from the conduit;

a tablet loading sleeve provided in said tablet loading neck;

a plurality of chemical treatment tablets having openings therein disposed in said tablet loading sleeve in stacked relationship; and

a tablet support rod extending through said openings in said chemical treatment tablets and through said tablet loading neck and constructed to extend into the conduit for suspending said chemical treatment tablets in the wastewater flowing through the conduit.

2. A wastewater treatment system for treating effluent flowing through a sewer pipe, said wastewater treatment system comprising a wastewater flow conduit inserted in the sewer pipe for receiving the effluent;

a tablet loading neck extending from said wastewater flow conduit;

lid means provided on said tablet loading neck for removably closing said tablet loading neck;

a tablet support rod slidably extending through said lid means and said tablet loading neck and terminating in said wastewater flow conduit;

bias means provided on said lid means, said bias means engaging said tablet support rod for biasing said tablet support rod upwardly;

a first set of chemical treatment tablets slidably mounted on said tablet support rod in stacked relationship in said wastewater flow conduit and a second set of chemical treatment tablets sidably mounted on said tablet support rod in stacked relationship in said tablet loading neck, whereby said second set of chemical treatment tablets descends by gravity on said tablet support rod to replace said first set of chemical treatment tablets, as said first set of chemical treatment tablets is dissolved in the effluent.

3. The wastewater treatment system of claim 2 comprising a tablet loading sleeve provided in said tablet loading neck for receiving said tablet support rod and said chemical treatment tablets.

4. The wastewater treatment system of claim 2 comprising alarm switch means connected to said tablet support rod, wherein said alarm switch means is activated responsive to upward movement of said tablet support rod with respect to said lid means.

5. The wastewater treatment system of claim 4 comprising a tablet loading sleeve provided in said tablet loading neck for receiving said tablet support rod and said chemical treatment tablets.

6. The wastewater treatment system of claim 2 comprising alarm switch means engaging said bias means, whereby said tablet support rod slides upwardly through said lid means responsive to said bias means and activates said alarm switch means as said chemical treatment tablets are dissolved in the effluent.

7. The wastewater treatment system of claim 6 comprising a tablet loading sleeve provided in said tablet loading neck for receiving said tablet support rod and said chemical treatment tablets.

8. The wastewater treatment system of claim 2 comprising a spring retainer nut threaded on said tablet support rod above said lid means and wherein said bias means comprises a coil spring interposed between said spring retainer nut and said lid means.

9. The wastewater treatment system of claim 8 comprising alarm switch means engaging said tablet support rod and wherein said alarm switch means is activated responsive to upward movement of said tablet support rod with respect to said lid means.

10. The wastewater treatment system of claim 8 comprising a tablet loading sleeve provided in said tablet loading neck for receiving said tablet support rod and said chemical treatment tablets.

11. The wastewater treatment system of claim 8 comprising alarm switch means engaging said tablet support rod, wherein said alarm switch means is activated responsive to upward movement of said tablet support rod and comprising a tablet loading sleeve provided in said tablet loading neck for receiving said tablet support rod and said chemical treatment tablets.

12. The wastewater treatment system of claim 2 wherein said bias means comprises a lid retainer nut threaded on said tablet support rod above said lid means and a deformable membrane spanning said lid means and engaging said lid retainer nut for biasing said tablet support rod upwardly.

13. The wastewater treatment system of claim 12 comprising alarm switch means engaging said tablet support rod and wherein said alarm switch means is activated responsive to upward movement of said tablet support rod and deformation of said deformable membrane upwardly.

14. The wastewater treatment system of claim 12 comprising a tablet loading sleeve provided in said tablet loading neck for receiving said tablet support rod and said chemical treatment tablets.

15. The wastewater treatment system of claim 12 comprising alarm switch means engaging said tablet support rod and wherein said alarm switch means is activated responsive to upward movement of said tablet support rod and deformation of said deformable membrane upwardly and comprising a tablet loading sleeve provided in said tablet loading neck for receiving said tablet support rod and said chemical treatment tablets.

16. A wastewater treatment system for treating effluent flowing through a wastewater pipe from a sewage treatment plant, said wastewater treatment system comprising a wastewater flow conduit inserted in the wastewater pipe for receiving the effluent;

a tablet loading neck extending from said wastewater flow conduit in substantially perpendicular relationship with respect to the wastewater pipe;

lid means provided on said tablet loading neck for removably closing said tablet loading neck;

a tablet support tube extending through said lid means and said tablet loading neck and terminating in said wastewater flow conduit, a substantially transparent first window provided in said tablet support tube in said wastewater flow conduit and a photoelectric sensor provided in the upper end of said tablet support tube;

a first set of chemical treatment tablets slidably mounted on said tablet support tube in stacked relationship in said tablet loading neck and covering said first transparent window and a second set of chemical treatment tablets slidably mounted on said tablet support tube in stacked relationship in said tablet loading neck, whereby said second set of chemical treatment tablets descends by gravity on said tablet support tube to replace said first set of chemical treatment tablets, as said first set of chemical treatment tablets is dissolved in the effluent, and said first transparent window is uncovered and said photoelectric sensor is activated, when said second set of chemical treatment tablets is dissolved in the effluent.

17. The wastewater treatment system of claim 16 comprising a tablet loading sleeve provided in said tablet loading neck for receiving said tablet support rod and said chemical treatment tablets.

18. The wastewater treatment system of claim 16 comprising a second transparent window provided in said tablet support tube in said tablet loading neck, whereby said second transparent window is uncovered and said photoelectric sensor is actuated as said second set of chemical treatment tablets descends on said tablet support tube to replace said first set of chemical treatment tablets.

19. The wastewater treatment system of claim 16 comprising a tablet loading sleeve provided in said tablet loading neck for receiving said tablet support rod and said chemical treatment tablets, and wherein said tablet loading column is inserted in said tablet loading neck and further comprising a second transparent window provided in said tablet support tube in said tablet loading neck, whereby said second transparent window is uncovered and said photoelectric sensor is actuated as said second set of chemical treatment tablets descends on said tablet support tube to replace said first set of chemical treatment tablets.