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US6019810: Effluent treatment system for removing effluent gases from a gas stream

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Filing Information

Inventor(s) John Paul Phillips · Kieran John Mullins ·
Assignee(s) Bord na Mona ·
Attorney/Agent(s) Jacobson, Price, Holman & Stern, PLLC ·
Primary Examiner David A. Simmons ·
Assistant Examiner Robert A. Hopkins ·
Application Number US8967720
Filing date 11/10/1997
Issue date 02/01/2000
Predicted expiration date 05/10/2016
U.S. Classifications 55/512  · 55/524  · 55/522  · 261/DIG.72  · 55/529  · 96/290  ·
International Classifications B01D 3902  ·
Kind CodeA
International Classifications 261DIG. 72;94 ·
Related U.S. Application DataThis application is a continuation of international application PCT/IE96/00026, filed May 10, 1996.
Foreign Priority IE950337 - 05/10/1995 · IE950745 - 09/25/1995 · IES960322 - 04/30/1996 ·
40 Claims, No Drawings


Abstract

An effluent treatment system for removing effluent gases from a gas stream including a packing having a plurality of randomly arranged elements of calcareous material. The elements may be spent shells of shellfish, especially half mussel shells and have a liquid retention portion which may form an individual liquid reservoir depending on the orientation of the element with the packing. Suitable bacteria are retained in at least some of the reservoirs. The system may be operated as a biofilter or a bioscrubber.

Independent Claims | See all claims (40)

  1. 1. An effluent treatment system for removing effluent gases from a gas stream comprising:a housing having spaced apart gas inlet and outlet; anda packing between inlet and outlet, the packing comprising:a plurality of separate elements of calcarous material each having a liquid retaining reservoir; and the elements being so arranged that some of the elements form individual bacteria and packing moisture retaining elements and others are oriented to form voids for the passage of gas and calcarous surfaces for reaction with a gas stream passing between gas inlet and outlet; and in which the packing contains bacteria.
  2. 10. An effluent treatment system for removing effluent gases from a gas stream comprising:a housing having spaced apart gas inlet and outlet; anda packing between inlet and outlet, the packing comprising:a plurality of separate elements formed from ground calcarous material mixed with a binding agent each having a liquid retaining reservoir; and the elements being so arranged that some of the elements form individual bacteria and packing moisture retaining elements and others are oriented to form voids for the passage of gas and calcarous surfaces for reaction with a gas stream passing between gas inlet and outlet; and in which the packing contains bacteria.
  3. 13. An effluent treatment system for removing effluent gases from a gas stream comprising:a housing having spaced apart gas inlet and outlet; anda packing between inlet and outlet, the packing comprising:a plurality of separate elements of calcarous material each having a liquid retaining reservoir; the elements being so arranged that some of the elements form individual bacteria and packing moisture retaining elements and others are oriented to form voids for the passage of gas and calcarous surfaces for reaction with a gas stream passing between gas inlet and outlet; and in which the packing contains bacteria which are selected to assist the break-down of sulphur and sulphur analogues.
  4. 25. An effluent treatment system for removing effluent gases from a gas stream comprising:a housing having spaced apart gas inlet and outlet; anda packing between inlet and outlet, the packing comprising:a plurality of separate elements formed from ground calcarous material mixed with a binding agent each having a liquid retaining reservoir; the elements being so arranged that some of the elements form individual bacteria and packing moisture retaining elements and others are oriented to form voids for the passage of gas and calcarous surfaces for reaction with a gas stream passing between gas inlet and outlet; and in which the packing contains bacteria which are selected to assist the break-down of sulphur and sulphur analogues.
  5. 29. An effluent treatment system for removing effluent gases from a gas stream comprising;a housing having spaced apart gas inlet and outlet; anda packing between inlet and outlet, the packing comprising:a plurality of separate elements formed from ground calcarous material mixed with a binding agent each having a liquid retaining reservoir; the elements being so arranged that some of the elements form individual bacteria and packing moisture retaining elements and others are oriented to form voids for the passage of gas and calcarous surfaces for reaction with a gas stream passing between gas inlet and outlet; and inoculation means are provided comprising spray means for spraying the calcarous packing with a calcium solution and for inoculating the packing with bacteria.
  6. 35. An effluent treatment system for removing effluent gases from a gas stream comprising:a housing having spaced apart gas inlet and outlet; anda packing between inlet and outlet, the packing comprising:a plurality of separate elements of calcareous material each having a liquid retaining reservoir; the elements being so arranged that some of the elements form individual bacteria and packing moisture retaining elements and others are oriented to form voids for the passage of gas and calcareous surfaces for reaction with a gas stream passing between gas inlet and outlet; and in which the packing contains bacteria which are selected to assist the break-down of ammonia and ammonia analogues.
  7. 37. An effluent treatment system for removing effluent gases from a gas stream comprising:a housing having spaced apart gas inlet and outlet; anda packing between inlet and outlet, the packing comprising:a plurality of separate elements of calcareous material each having a liquid retaining reservoir; the elements being so arranged that some of the elements form individual bacteria and packing moisture retaining elements and others are oriented to form voids for the passage of gas and calcareous surfaces for reaction with a gas stream passing between gas inlet and outlet; and in which the packing contains bacteria which are selected to assist the break-down of V.O.C.'s.
  8. 39. An effluent treatment system for removing effluent gases from a gas stream comprising:a housing having spaced apart gas inlet and outlet; anda packing between inlet and outlet, the packing comprising:a plurality of separate elements of calcareous material each having a liquid retaining reservoir; the elements being so arranged that some of the elements form individual bacteria and packing moisture retaining elements and others are oriented to form voids for the passage of gas and calcareous surfaces for reaction with a gas steam passing between gas inlet and outlet; and in which the packing contains bacteria which are selected to assist the break-down of P.A.H.'s.

References Cited

U.S. Patent Documents

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US1077243 De Cew Oct 1913
US3364656 UNIVERSAL OIL PROD CO Whiton et al. Jan 1968
US3543937 JOSEPH M CHOUN Choun Dec 1970
US4977090 HUTTERMAN ALOYS Butterman et al. Dec 1990
US5387344 Monsanto Enviro-Chem Systems, Inc. McCombs et al. Feb 1995
US5525228 Iowa State University Research Foundation, Inc. Daque et al. Jun 1996
US5569634 W. R. Grace & Co.-Conn. Miller et al. Oct 1996
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Foreign Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
EP0100024BAYER AGFeb 1984
EP0336119Httermann, Alois Prof. Dr.Oct 1989
FR2655563SAPS ANTI CORROSIONJun 1991
DE3928255WEIL INDUSTRIEANLAGEN GMBHFeb 1991
DE4032234KOTTWITZ MAX ANTON DIPL ING DIApr 1992
DE4235591DAIMLER BENZ AGNov 1993
NL9302254TESTAMARE AG I ODec 1993
GB1204781UNIVERSAL OIL PROD COSep 1970
GB1328397CHOUN J MAug 1973
WO20WO9325205Dec 1993