Clarifier with submerged effluent launder and launder sweeper system

    公开(公告)号:US11331601B2

    公开(公告)日:2022-05-17

    申请号:US17267444

    申请日:2019-07-19

    IPC分类号: B01D21/18 B01D21/24 B01D21/00

    摘要: In a wastewater treatment system, a clarifier has a submerged effluent launder, with a sloped, submerged plate that allows clarified liquid to exit through submerged openings. The sloped surface tends to accumulate solids, which can lead to algae growth. Typical internal scum collection system equipment prevents any efficient way to clear the accumulated sludge off the launder surface because of interferences. As disclosed here, a scum discharge area or box is placed external to the clarifier in one embodiment. Scum is wiped from a vertical surface of the launder assembly, above the sloped launder surface, and swept over a scum beach at one position in the clarifier, to drop into a lower trough and the flow out through the clarifier wall to a drop out box or scum discharge area. This allows for a rake-attached, sweeping launder wiper to be moved with the clarifier's rake to remove the accumulation of sludge from the launder's submerged surface, without elaborate moving parts. The sludge is swept back to settle in the clarifier, improving effluent quality by preventing sludge from exiting along with clarified water. In another embodiment the scum discharge box is internal, as a low-profile vertically disposed channel against the inside clarifier wall, leading to an existing scum pipe through the clarifier wall.

    Haunch assembly for supporting a concrete slab and method of making the haunch assembly
    10.
    发明授权
    Haunch assembly for supporting a concrete slab and method of making the haunch assembly 失效
    用于支撑混凝土板的Haunch组件以及制造该组件的方法

    公开(公告)号:US07010891B1

    公开(公告)日:2006-03-14

    申请号:US10114719

    申请日:2002-04-02

    摘要: A foundation haunch assembly used for attachment to a foundation wall and a method of making the haunch assembly using a concrete block machine. The haunch assembly includes a concrete haunch having an upper portion, a center portion and a lower portion. The upper portion of the haunch includes a flat top surface adapted for receiving a portion of a pre-cast concrete slab, stairs, stoops, poured in place concrete slab or other building structure thereon. Also, the upper portion includes an internal horizontal metal support rod along the length thereof. One end of the support rod is threaded to one end of a threaded coupling. The foundation haunch assembly also includes a variable length foundation bolt with a threaded end threaded into an opposite end of the threaded coupling. The foundation bolt is adapted for receipt through a hole in a portion of a vertical foundation wall. An opposite threaded end of the foundation bolt is attached to a nut. The nut is used for tightening and securing the foundation bolt and the concrete haunch to a side of the foundation wall.

    摘要翻译: 用于连接到基础墙壁的基础组件和使用混凝土砌块机制造肘部组件的方法。 牵引组件包括具有上部,中心部分和下部的混凝土构架。 臀部的上部包括平坦的顶部表面,其适于接收一部分预制混凝土板,楼梯,杓子,浇注在其上的混凝土板或其它建筑结构。 此外,上部包括沿其长度的内部水平金属支撑杆。 支撑杆的一端螺纹连接到螺纹联轴器的一端。 基础组件还包括可变长度的基础螺栓,其具有螺纹连接到螺纹联接器的相对端的螺纹端。 基础螺栓适于通过垂直基础壁的一部分中的孔接收。 基础螺栓的相对的螺纹端连接到螺母。 螺母用于将基础螺栓和混凝土肘部紧固并固定在基础墙的一侧。