公开(公告)号：US3335286A

公开(公告)日：1967-08-08

申请号：US37507164

申请日：1964-06-15

Applicant: FMC CORP

Inventor： PALMER WARREN G ,  HOUSTON ROBERT K ,  FOWLER WILLIAM J ,  BILLETT RONALD J

IPC: B07C5/342 ,  G01J3/46

CPC classification number: G01J3/46 ,  B07C5/3425 ,  G01J3/463 ,  G01J3/51

公开(公告)号：US3575850A

公开(公告)日：1971-04-20

申请号：US3575850D

申请日：1969-07-07

Applicant: FMC CORP

Inventor： DAVIDSON ROGER ,  SAKO FUMIO F ,  FISHER ROBERT A ,  PALMER WARREN G

IPC: B01D33/00 ,  C02F3/12 ,  C02F11/12 ,  C02C1/12

CPC classification number: C02F11/123 ,  B01D33/048 ,  B01D33/073 ,  B01D33/463 ,  C02F3/12 ,  Y02W10/15

Abstract: THE METHOD OF TREATING WASTE MATERIALS SUCH AS SEWAGE INVOLVES INTRODUCING RAW SEWAGE INTO A BODY OF AQUEOUS MEDIUM, AERATING SAID BODY OF AQUEOUS MEDIUM, WITHDRAWING A SUFFICIENT VOLUME OF SUBSTANTIALLY SOLIDS FREE LIQUID THROUGH A PERFORATE DRUM SUPPORTED FILTER WHICH IS PARTIALLY SUBMERGED IN SAID BODY OF AQUEOUS MEDIUM TO COMPENSATE FOR THE VOLUME OF INFLUENT WASTE MATERIAL AND THEREBY MAINTAIN A RELATIVELY CONSTANT FOR

SAID BODY OF AQUEOUS MEDIUM, ACCUMULATING SOLIDS ON THE MOVABLE FILTER OPERATING SO THAT IT FILTERS OUT SOLIDS WHILE PASSING THE SUBSTANTIALLY SOLIDS FREE LIQUID AND TRANSPORTING THE SOLIDS ACCUMULATED ON SAID SCREEN TO A POINT OF DISPOSAL WHERE THE SOLIDS ARE DISLODGED FROM THE SCREEN.

公开(公告)号：US3642617A

公开(公告)日：1972-02-15

申请号：US3642617D

申请日：1970-01-29

Applicant: FMC CORP

Inventor： BRINK EDWIN H ,  PALMER WARREN G

IPC: B03D1/02 ,  B03D1/24 ,  C02F1/24 ,  C02F3/30 ,  B03D1/00

CPC classification number: B03D1/02 ,  B03D1/028 ,  B03D1/1412 ,  B03D1/1431 ,  B03D1/1456 ,  B03D1/1462 ,  B03D1/247 ,  C02F1/24 ,  C02F3/30

Abstract: A suspension of activated sludge from a secondary settling tank is concentrated by a bubble flotation process. Air is forced through a mixture of water and a surfactant in a shear-type foamer at low pressure to produce a stable foam of small air bubbles in water. The foam is pumped into the suspension entering the concentrator and the bubbles attach to the solids in the suspension. The mixture of foam and suspension is released within a baffle in the concentrator tank, causing the surfactant shielded air bubbles to lift the solids to which they have become attached and form a blanket of concentrated sludge. A rotating skimmer head removes an upper layer of the sludge blanket whereas the clarified effluent flows under the baffle and out over an annular weir for discharge. The concentrated sludge removed from the concentrator is introduced into an anaerobic digester, along with primary sludge from the primary settling tank of the system. One overall effect is to reduce the size required for the digester.

Abstract translation: 来自二级沉淀池的活性污泥的悬浮液通过气泡浮选过程进行浓缩。 在低压下将空气通过剪切型起泡器中的水和表面活性剂的混合物强制，以在水中产生稳定的小气泡泡沫。 将泡沫泵入进入浓缩器的悬浮液中，并且气泡附着在悬浮液中的固体上。 泡沫和悬浮液的混合物在浓缩罐中的挡板内释放，导致表面活性剂屏蔽的气泡提升它们已经附着的固体并形成浓缩污泥的毯子。 旋转的分离器头部去除污泥层的上层，而澄清的流出物在挡板下方流出并在环形堰上排出。 将从浓缩器中除去的浓缩污泥与来自系统的初级沉淀池的初级污泥一起引入厌氧消化器。 一个整体的效果是减少消化器所需的尺寸。

公开(公告)号：US3489679A

公开(公告)日：1970-01-13

申请号：US3489679D

申请日：1967-08-15

Applicant: FMC CORP

Inventor： DAVIDSON ROGER ,  PALMER WARREN G ,  FORREST TOM H

IPC: B01D21/00 ,  B01D29/09 ,  B01D33/048 ,  B01D35/20 ,  B01D36/04

CPC classification number: B01D21/283 ,  B01D21/00 ,  B01D21/0012 ,  B01D21/04 ,  B01D21/302 ,  B01D21/34 ,  B01D29/09 ,  B01D29/605 ,  B01D29/72 ,  B01D29/90 ,  B01D29/92 ,  B01D33/048 ,  B01D33/056 ,  B01D33/54 ,  B01D33/72 ,  B01D33/74 ,  B01D33/807 ,  B01D35/20 ,  B01D36/04

Abstract: Ultrasonic clarification of liquids... by means of an endless moving screen having openings smaller than at least some of the solids which travels through a tank between the inlet and outlet and into a zone containing a body of liquid separated from the aqueous solution, the tank being provided with an inlet for the suspension and an outlet for the clarified aqueous medium. The body of liquid is subjected to ultrasonic vibrations to impart loosening forces to the solids deposited on the screen, thereby dislodging them and suspending them in the zone. This causes the solids, which are still under the influence of the ultrasonic vibrations, to settle and concentrate in the liquid at the bottom of the zone. The screen is then moved, and the solids removed from aqueous suspension and in their concentrated solid state from the bottom of the zone. The bath has relatively small volume, so that after solids are deposited on the screen within the tank and are subsequently concentrated on the bottom, the clean portion of the screen is returned to the tank for further removal of solids.