公开(公告)号：US4869818A

公开(公告)日：1989-09-26

申请号：US47802

申请日：1987-05-08

Applicant: David DiGregorio ,  Mark G. Biesinger ,  Frederick M. Riser

Inventor： David DiGregorio ,  Mark G. Biesinger ,  Frederick M. Riser

IPC: B01F3/04 ,  C02F3/16 ,  C02F3/20

CPC classification number: C02F3/165 ,  B01F3/04773 ,  C02F3/205 ,  Y02W10/15 ,  Y10S210/926

Abstract: An improved wastewater aeration and mixed liquor pumping arrangement for an orbital-type actuated sludge purification method includes the addition of a radial flow impeller on a shaft extension below the normal surface aerator. Both the combined radial flow impeller and surface aerator are positioned with respect to an end of a partition wall forming the flow channels of the orbital system such that both the impeller and the aerator pump the mixed liquor in the same direction, so that the mixed liquor is moved at a sufficient velocity through and around the various channels and returned. The radial flow impeller is positioned adjacent to the bottom of the orbital channel and enhances the propulsion of the mixed liquor along the bottom of the channel thus permitting deeper channels with attendant concrete and land area savings in constructing the system. The system may be operated at various wastewater levels so that when oxygenation levels are high or oxygenation needs are low, the level is lowered by a weir so that only the lower radial impeller functions to propel the mixed liquor. Auxiliary compressed or aspirated air may also be inputted through the lower radial impeller.

Abstract translation: 用于轨道式致动污泥净化方法的改进的废水曝气和混合液体泵送装置包括在正常表面曝气器下方的轴延伸部分添加径向流动叶轮。 组合的径向流动叶轮和表面曝气器相对于形成轨道系统的流动通道的分隔壁的端部定位，使得叶轮和曝气器两者在相同方向上泵送混合液体，使得混合液 以足够的速度移动通过各个通道周围并返回。 径向流动叶轮定位在轨道通道的底部附近，并且增强了混合液沿着通道底部的推进，从而允许更深的通道，同时伴随着混凝土和陆地面积的减少而构建系统。 该系统可以在各种废水水平下操作，使得当氧合水平高或氧合需求低时，水平被堰降低，使得仅下部径向叶轮用于推进混合液体。 辅助压缩或吸入空气也可以通过下径向叶轮输入。

公开(公告)号：US4275020A

公开(公告)日：1981-06-23

申请号：US944116

申请日：1978-09-20

Applicant: David DiGregorio ,  Daniel McCarthy ,  Keith J. Mounteer ,  Charles D. Thompson

Inventor： David DiGregorio ,  Daniel McCarthy ,  Keith J. Mounteer ,  Charles D. Thompson

IPC: B01F1/00 ,  B01F3/04 ,  B01F5/02 ,  C02F1/24 ,  C02F3/12

CPC classification number: B01F3/04836 ,  B01F3/0473 ,  B01F3/04758 ,  B01F5/0268 ,  C02F1/24 ,  C02F3/1289 ,  Y02W10/15

Abstract: A dissolving tank for dissolving a large amount of gas in a liquid and including a generally horizontally disposed tray (28) (29) mounted within the tank (2) (21) to divide the tank (2) (21) into an upper reaction zone (36) and a lower discharge zone (38). The tray (28) (29) has formed therein both a central opening (34) (35) for fluid communication between the discharge zone (38) and the reaction zone (36) and peripheral openings (32) (33) which allow any liquid which collects on the tray (28) (29) to flow from reaction zone (36) to discharge zone (38). The dissolving tank further includes liquid feed means (10) positioned within the tank (2) (21) below the tray (28) (29) to discharge liquid upwardly through the central opening (34) (35) of the tray (28) (29) and into the reaction zone (36). The dissolving tank further includes liquid distribution means (14) mounted within the tank (2) (21) above the tray (28) (29) and having flared sidewalls (15) and a vertically-oriented distribution orifice (16). The distribution means (14) is positioned so that a portion of the liquid discharged upwardly from the feed means (10) impacts on the flared sidewalls (15) and is distributed as droplets within the reaction zone (36) and another portion of the liquid discharged from the feed means (10) passes upwardly through the distribution orifice (16) toward the top (3) of the tank (2) (21).

Abstract translation: 一种用于将大量气体溶解在液体中并且包括安装在罐（2）（21）内的大致水平布置的盘（28）（29）的溶解槽，以将罐（2）（21）分成上反应 区域（36）和下排放区域（38）。 托盘（28）（29）在其中形成有用于在排放区（38）和反应区（36）之间流体连通的中心开口（34）和周边开口（32）（33），允许任何 收集在托盘（28）（29）上的液体从反应区（36）流到排放区（38）。 溶解罐还包括定位在托盘（28）（29）下方的罐（2）（21）内的液体进料装置（10），以将液体向上排出通过托盘（28）的中心开口（34）（35） （29）并进入反应区（36）。 溶解罐还包括安装在托盘（28）（29）上方的罐（2）（21）内并具有扩口侧壁（15）和垂直定向的分配孔（16）的液体分配装置（14）。 分配装置（14）被定位成使得从进料装置（10）向上排出的液体的一部分冲击扩张的侧壁（15），并且作为液滴分布在反应区（36）内，另一部分液体 从进料装置（10）排出的液体向上通过分配孔（16）朝向罐（2）（21）的顶部（3）。

公开(公告)号：US4936982A

公开(公告)日：1990-06-26

申请号：US326143

申请日：1989-03-20

Applicant: David DiGregorio ,  Mark G. Biesinger ,  Brent C. Black

Inventor： David DiGregorio ,  Mark G. Biesinger ,  Brent C. Black

IPC: B01D21/00 ,  C02F3/12

CPC classification number: C02F3/1257 ,  B01D21/0024 ,  B01D21/003 ,  B01D21/0042 ,  B01D21/02 ,  B01D21/2405 ,  B01D21/2488 ,  B01D21/34 ,  Y02W10/15 ,  Y10S210/926

Abstract: A combined oxidation orbital ditch and intraclarifier has the intraclarifier in the form of an elongated clarifier vessel positioned on the top of a section of the center partition between the ditch sidewalls so that the overall clarifier vessel extends laterally into both of a pair of flow channels formed between the ditch sidewalls and the center partition but is spaced from the ditch sidewalls so as to minimize impediment of the mixed liquor flow being treated in the channels. A gated inlet below the flow surface is provided in the one half of the bow of the vessel facing into the mixed liquor flow for diverting a portion of the flow into the clarifier. That flow portion is distributed over the entire width of the vessel and arrested in flow velocity so that settling of sludge can be performed downstream in the vessel. Clarified liquid removal troughs are provided at the stern end of the vessel and sludge ports are provided in the vessel bottom to transport settled sludge into the mixed liquor flowing under the vessel width.

公开(公告)号：US5234595A

公开(公告)日：1993-08-10

申请号：US917557

申请日：1992-07-21

Applicant: David DiGregorio ,  David T. Berry

Inventor： David DiGregorio ,  David T. Berry

IPC: C02F3/12 ,  C02F3/16 ,  C02F3/30

CPC classification number: C02F3/1257 ,  C02F3/16 ,  C02F3/301 ,  C02F3/302 ,  Y02W10/15 ,  Y10S210/903 ,  Y10S210/926

Abstract: A wastewater orbital treatment system includes an elongated racetrack-like tank containing a central partition wall. A surface aerator is mounted adjacent to at least one end of the partition wall to both aerate and propel the mixed liquor including biomass around the orbital tank. An aerobic zone for BOD and ammonia oxidation is provided in an upper layer of the moving volume of mixed liquor and an anoxic zone for reduction of NO.sub.x from the aerobic zone, by anoxic respiration by the biomass, is provided in a lower layer of the moving volume of mixed liquor. An imperforate horizontal baffle is provided under the surface aerator so as to prevent dissolved oxygen in the aerobic zone from entering the anoxic zone. The NO.sub.x from the aerobic zone is introduced through a free interface of the two vertically displaced zones downstream of the baffle. In a preferred embodiment a radial impeller connected by a common drive shaft to the surface aerator is positioned below the baffle and aids in propelling the anoxic zone layer around the circuit.

Abstract translation: 废水轨道处理系统包括一个包含中央分隔壁的细长跑道状舱。 表面曝气器安装在分隔壁的至少一端附近，以便将包括生物质的混合液体充气并推进到轨道槽周围。 在混合液体的移动体积的上层提供了用于BOD和氨氧化的好氧区，并且通过生物质的缺氧呼吸，在需氧区中还原NOx的缺氧区被提供在移动的下层 混合液体积。 在表面曝气机下方设置无孔水平挡板，以防止需氧区中的溶解氧进入缺氧区。 来自好氧区的NOx通过挡板下游的两个垂直位移区域的自由界面引入。 在优选实施例中，通过公共驱动轴连接到表面曝气器的径向叶轮被定位在挡板下方，并有助于将缺氧区层推向电路周围。

公开(公告)号：US5078869A

公开(公告)日：1992-01-07

申请号：US510896

申请日：1990-04-18

Applicant: David DiGregorio ,  Brent C. Black

Inventor： David DiGregorio ,  Brent C. Black

IPC: B01D21/00 ,  C02F3/12

CPC classification number: C02F3/1257 ,  B01D21/0003 ,  B01D21/0024 ,  B01D21/003 ,  B01D21/0042 ,  B01D21/02 ,  B01D21/2405 ,  B01D21/2488 ,  B01D21/30 ,  B01D21/302 ,  Y02W10/15 ,  Y10S210/926

Abstract: The apparatus of the present invention is a cleaning system to be employed in the clarifier. A track is mounted to opposing sides of the clarifier. A scraping blade spans the two rails. A mechanism connects the two ends of the blade to the tracks and provides for stepwise movement of the blade bidirectionally within the clarifier. Movement of the blade over slots found in the clarifier bottom results in displacement of sludge from the clarifier back into the orbital ditch. The moving mechanisms are preferably located adjacent the clarifier floor. The scraping blade moves in stepwise motion over each of the slots, displacing sludge through such slots. At the same time a suction header, with inlets on both sides of the blade, allows some of the sludge to be suctioned from the bottom of the clarifier and removed from the orbital ditch system.

Abstract translation: 本发明的装置是在澄清器中使用的清洁系统。 轨道安装在澄清池的相对两侧。 刮刀横跨两根轨道。 机构将叶片的两端连接到轨道，并且在澄清器内双向地提供叶片的逐步移动。 叶片在澄清池底部发现的槽的运动导致污泥从澄清池移回到轨道沟中。 移动机构优选地位于澄清器底板附近。 刮刀在每个槽上逐步运动，使污泥排出这些槽。 同时，具有在叶片两侧的入口的抽吸集管允许一些污泥从澄清池的底部抽吸并从轨道沟渠系统中移出。

公开(公告)号：US4940545A

公开(公告)日：1990-07-10

申请号：US330017

申请日：1989-03-29

Applicant: David DiGregorio ,  Richard J. Eismin ,  Frederick M. Riser

Inventor： David DiGregorio ,  Richard J. Eismin ,  Frederick M. Riser

IPC: B01D21/06 ,  C02F3/12

CPC classification number: C02F3/1257 ,  B01D21/06 ,  B01D21/2488 ,  Y02W10/15 ,  Y10S210/916 ,  Y10S210/926

Abstract: A thickener well is provided in one end of a digester orbital ditch having a pair of channels and an elongated center partition spaced from a pair of ditch endwalls, the overall ditch forming a basin for digestion of wasted sludge. A curved endwall of the ditch provides a common curved top outer peripheral wall of the thickener well. The remainder of the well has a cylindrical configuration integral with the orbital ditch bottom and extending downwardly therefrom to a position below the horizontal plane of the ditch bottom. A sludge raking structure is positioned at the bottom of the well for periodically raking settled sludge into a sludge outlet at the bottom of the well. A surface aerator is provided between and spaced from the other ditch endwall and a juxtaposed end of the partition or other aeration apparatus mounted in a channel(s) to aerate and propel a liquid-solids sludge mixture wasted from a secondary treatment apparatus and fed into the orbital ditch. The mixture is circulated in the ditch and across and through a top portion of the well. The orbital ditch may be decanted by turning off the aerator, allowing a clear liquid top layer to form in the ditch and decanting the clear liquid from the tank by lowering a weir or by adding additional activated sludge to the ditch to displace clear liquid over a fixed weir.