Apparatus for detecting oil and other lighter-than-water contaminants in an effluent stream

• US 4,919,892 A
• Filed: 06/22/1989
• Issued: 04/24/1990
• Est. Priority Date: 06/07/1988
• Status: Expired due to Fees

• Current Assignee: Arnold D. Plumb
• Original Assignee: Arnold D. Plumb
• Inventors: Plumb, Arnold D.
• Primary Examiner(s): Richman, Barry S.
• Assistant Examiner(s): Kummert, Lynn M.
• Application Number:
  US07/369,770
• Time in Patent Office: 306 Days
• Field of Search: 422/58, 422/61, 422/86-88, 436/1, 436/3, 436/28, 436/29, 436/60, 436/61, 436/163, 73/61 R, 73/61.1 R, 73/323, 73/863.71, 73/863.81, 73/863.82, 210/93, 210/94, 210/95, 210/671, 166/336, 166/337
• US Class Current: 422/408
• CPC Class Codes: G01N 33/1833 Oil in water
• CPC Class Codes: Y02A 20/20 Controlling water pollution; Waste water treatment

Abstract

An apparatus for detecting oil and other lighter-than-water contaminants in an effluent stream in a sewage system. The apparatus includes a disposable detector which floats in the effluent stream and detects oil and other contaminants having a specific gravity lighter than the water by absorbing the oil and such contaminants in an oleophilic material, permitting the oil and other contaminants to rise and collect in a collection tube. The acidity of pH of the effluent being monitored is determined by routing a portion of the effluent stream across a litmus paper.

Claims

1. An apparatus for continuously detecting the presence of oil and other contaminants in an effluent stream passing through a pipeline comprising:

a housing having an inlet and an outlet;

oleophilic means supported within said housing and positioned so that at least a portion of the effluent stream enters said housing through said inlet and passes through said oleophilic means;

means for directing the flow of the effluent stream within said housing; and

a tube having one end in fluid communication with the interior of said housing and having another end substantially restricted, said tube positioned to collect and display the presence of oil absorbed by said oleophilic means.

2. The apparatus of claim 1 wherein said directing means comprises a plurality of baffles.

3. The apparatus according to claim 2 wherein said plurality of baffles comprises:

a first baffle and a second baffle attached to said housing, said first and second baffles positioned and arranged to laterally support said oleophilic means; and

a third baffle positioned and arranged to isolate oil and other contaminants separated from the effluent stream by said oleophilic means and to direct the oil and other contaminants to said tube.

4. The apparatus of claim 1 wherein said apparatus further comprises means for detecting the pH of the effluent stream.

5. The apparatus of claim 4 wherein said pH detecting means comprises litmus paper.

6. The apparatus of claim 1 wherein the cross-sectional area of said outlet is sized to be no more than 70% of the cross-sectional area of said inlet to form a pressure differential promoting the movement of the oil towards said tube.

7. The apparatus of claim 6 wherein said apparatus further comprises means for detecting the pH of the effluent stream.

8. The apparatus of claim 7 wherein said pH detecting means comprises litmus paper.

12. The apparatus of claim 7 wherein the cross-sectional area of said outlet is sized to be no more than 70% of the cross-sectional area of said inlet to form a pressure differential promoting the movement of the oil towards said tube.

13. The apparatus according to claim 7 wherein said apparatus further comprises means for securing said housing to said pipeline.

14. The apparatus according to claim 13 wherein said securing means comprises:

a line member positioned and arranged to engage said housing proximate said inlet;

a cap positioned and arranged to engage said pipeline and having a recessed portion of a predetermined minimum width;

a plug having an exterior width substantially the same as said predetermined minimum width of said cap and a connector positioned and arranged to engage said line member;

a cover positioned and arranged to contact said cap; and

means for verifying the movement of the cap relative to the cover.

9. An apparatus for continuously detecting the presence of oil and other contaminants in an effluent stream passing through a pipeline comprising:

a housing having an inlet and an outlet;

oleophilic means supported within said housing and positioned so that at least a portion of the effluent stream enters said housing through said inlet and passes through said oleophilic means;

means for supporting said oleophilic means within said housing and for directing the flow of the effluent stream through said oleophilic means so that oil and other contaminants absorbed by said oleophilic means are permitted to rise through said oleophilic means and the remainder of the effluent stream is directed through said outlet; and

a tube in fluid communication with the interior of the housing for collecting and displaying the presence of oil and other contaminants rising through said oleophilic means.

10. The apparatus of claim 9 wherein said supporting and directing means comprises a plurality of baffles.

11. The apparatus according to claim 10 wherein said plurality of baffles comprises:

a first baffle and a second baffle attached to said housing, said first and second baffles positioned and arranged to laterally support said oleophilic means; and

a third baffle positioned and arranged to direct and isolate oil and other contaminants rising through said oleophilic means.

15. An apparatus for continuously detecting the presence of oil and other contaminants in an effluent stream passing through a pipeline comprising:

a housing having an inlet and an outlet;

oleophilic means supported within said housing and positioned so that at least a portion of the effluent stream enters said housing through said inlet and passes through said oleophilic means;

means for supporting said oleophilic means within said housing and for directing the flow of the effluent stream through said oleophilic means so that oil and other contaminants absorbed by said oleophilic means are permitted to rise through said oleophilic means and the remainder of the effluent stream is directed through said outlet;

a tube in fluid communication with the interior of the housing for collecting and displaying the presence of oil and other contaminants rising through said oleophilic means; and

means for detecting the pH of the effluent stream.