WO2020191917A1 - 一种自动清洗水平卷膜（布）沉淀池 - Google Patents

一种自动清洗水平卷膜（布）沉淀池 Download PDF

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Publication number
WO2020191917A1
WO2020191917A1 PCT/CN2019/088724 CN2019088724W WO2020191917A1 WO 2020191917 A1 WO2020191917 A1 WO 2020191917A1 CN 2019088724 W CN2019088724 W CN 2019088724W WO 2020191917 A1 WO2020191917 A1 WO 2020191917A1
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Prior art keywords
cloth
film
sedimentation
automatic cleaning
sedimentation tank
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PCT/CN2019/088724
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English (en)
French (fr)
Inventor
王沛才
王薇赫
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王沛才
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Publication of WO2020191917A1 publication Critical patent/WO2020191917A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/02—Settling tanks with single outlets for the separated liquid
    • B01D21/04—Settling tanks with single outlets for the separated liquid with moving scrapers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/02—Settling tanks with single outlets for the separated liquid
    • B01D21/04—Settling tanks with single outlets for the separated liquid with moving scrapers
    • B01D21/06—Settling tanks with single outlets for the separated liquid with moving scrapers with rotating scrapers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/18—Construction of the scrapers or the driving mechanisms for settling tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/18—Construction of the scrapers or the driving mechanisms for settling tanks
    • B01D21/20—Driving mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/30—Control equipment
    • B01D21/32—Density control of clear liquid or sediment, e.g. optical control ; Control of physical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/08—Cleaning containers, e.g. tanks
    • B08B9/087—Cleaning containers, e.g. tanks by methods involving the use of tools, e.g. brushes, scrapers
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities

Definitions

  • the invention relates to a water treatment sedimentation tank, in particular to a sedimentation tank mud surface, a mud-water separation path and an anti-turbulence device.
  • the current pool type has the following problems and shortcomings: the sludge slides on the sedimentation surface before reaching the bottom of the pool, and it is completely dependent on gravity to freely accelerate the slide. In the later stage of the slide, sludge avalanches are accumulated to disturb the water body, or the speed is too fast to aggravate the turbulence and cause the separation of mud and water.
  • the present invention provides an automatic cleaning horizontal film (cloth) sedimentation tank, and its purpose is to provide an efficient separation device that is easy to manufacture, simple to maintain, and does not affect the mud and water after the particles settle.
  • the automatic cleaning horizontal film (cloth) sedimentation tank provided by the present invention is realized as follows: the sedimentation tank is filled with a multi-layer horizontal film (cloth) device, and the sediment formed on each layer of the horizontal film (cloth)
  • the mud surface is a horizontal plane, and the device divides the space in the tank into two areas.
  • the vertical upper part of the membrane is the mud-water separation area, and the two ends of the membrane are the secondary sludge sedimentation area.
  • the sludge deposited on the film is transferred to the relatively static vertical settlement area on both sides of the device. Adjusting the film speed can control the sludge staying on the film.
  • a multi-layer film roll device can be set, and multiple sets of film roll devices with different lengths and widths can be set along the water flow direction and the vertical water flow direction.
  • a certain length of film (cloth) is pre-wound on both sides of the roller.
  • the rotation power of the device can be directly provided by an underwater motor or from the surface of the water through mechanical transmission, and automatic operation can be realized by collecting and controlling signals such as speed, position, and period.
  • each layer of membrane (cloth) is provided with equally spaced parallel diversion spacers along the water flow direction, which can reduce the hydraulic radius, greatly reduce the Reynolds number, and have strong anti-disturbance. Better stabilize the water quality.
  • the present invention adopts the structure of horizontally moving multilayer film (cloth) and several spacers in parallel to the water flow direction, the following beneficial effects can be obtained: 1. Higher precipitation efficiency.
  • the inclined pipe (plate), folded plate corrugated plate, and horizontal pipe sedimentation tanks used in the water treatment industry have a certain inclination angle with the horizontal plane.
  • the roll film (cloth) of the present invention has a zero angle with the horizontal plane.
  • the mud surface is a horizontal surface, and the utilization rate of the sedimentation area is 100%.
  • the distance between the layers can be set arbitrarily according to different water volume and water quality requirements. The smaller the distance, the shorter the residence time in the sedimentation tank. So as to truly realize the shallow pond theoretical goal. 2. Water quality after sinking is more stable.
  • the sludge distribution on each layer of the film is relatively uniform, and the sludge between the layers does not affect each other.
  • the sludge distribution in the moving direction of the single-layer film is also uniform, which can accurately control the amount of sludge on the film.
  • the sludge will not accumulate locally over time and block the device, reduce the cross-section of the water, and will not cause sludge.
  • Disturbing the water body, the sludge state and translation speed in the separation zone are controllable, the sludge state is stable, and the sludge water separation is irreversible. Device failures can be alarmed and handled in time through the monitoring system to realize automatic operation.
  • Figure 1 is a front view of the automatic cleaning horizontal film (cloth) sedimentation tank of the present invention
  • FIG 2 is a side view of the automatic cleaning horizontal film (cloth) sedimentation tank shown in Figure 1;
  • Fig. 3 is a schematic diagram of the two-stage zoning of sludge settlement in the automatic cleaning horizontal membrane (cloth) sedimentation tank shown in Fig. 1;
  • Fig. 4 is a top view of the automatic cleaning horizontal film sink (cloth) lake shown in Fig. 1.
  • Figure 1 is a schematic diagram of the front elevation structure of the present invention, including the bracket 1, the film (cloth) 2, the side roller 3, the reel 4, the spacer 5 and the scraper 6, the power device can be selected according to the needs of water
  • the lower motor is provided.
  • the motor can choose to have speed regulation or stepping function.
  • the transmission mode can also be reduced by gear or chain.
  • the gear transmission mode can choose straight gear, helical gear or umbrella gear, and water can also be entered between adjacent layers.
  • the power device is arranged across the two ends of the water outlet to meet the space requirements of different floor heights and different angles.
  • the sludge falling into the bottom layer can be added with a film roll device according to the needs of the pond-type sludge discharge method to transfer the sludge to the middle hopper.
  • the processing is simple, the maintenance is convenient, it can be disassembled and assembled in layers, and repaired locally, with low maintenance costs.
  • Used in the reconstruction project can greatly improve the water quality and water volume of the sedimentation tank, reduce the self-water consumption and renewal costs. Used for new projects can reduce the space occupied, save land resources, and reduce construction costs.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Sludge (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

一种自动清洗水平卷膜（布）沉淀池，包括水平输送污泥的卷膜装置和起稳流功能的平行水流方向的垂直隔片（5）以及自净除泥功能的刮板（6），沉淀池内形成两个区，水平卷膜（布）（2）和垂直隔片（5）所处区域为泥水分离区，沉泥面为水平面，两端辊轴外侧与池壁之间即刮板（6）所在区域为污泥二次沉降区，通过控制水平卷膜（布）（2）的平移速度达到控制膜上污泥量并进一步控制污泥移动速度和状态的目的。

Description

一种自动清洗水平卷膜（布）沉淀池 技术领域
本发明涉及一种水处理沉淀池，尤其涉及沉淀池沉泥面、泥水分离路径和抗紊流装置。
 背景技术
当前水处理行业通用的斜板（管）沉淀池、新型水平管沉淀池等池型虽然在平流沉淀池基础上有了改进，但仍然没有真正解决泥水分离效率问题，无法控制污泥汇集状态和速度 。
技术问题
当前池型存在以下问题和缺点：污泥到达池底前在沉泥面上滑落完全依靠重力自由加速滑落，在滑道后期累积产生泥崩扰动水体，要么速度过快加重紊流，导致泥水分离路径反复干扰影响沉淀池出水水质稳定；沉泥面全部为斜面，都与水平面存在倾角，减少有效沉淀面积，降低了沉淀效率，适应水质水量波动能力弱；长时间运行积泥易堵塞板（管）底部，缩短了运行周期，增加运行维护难度；加工制作复杂，拆装不灵活，局部损坏需要整体更换，增加了日常维保费用；占地面积较大，基建费用高；需要定期放空清洗，自用水量大。
 技术解决方案
为了解决上述问题，本发明提供了一种自动清洗水平卷膜（布）沉淀池，其目的在于，提供一种制造容易，维护简单，颗粒沉降后泥、水互不影响的高效分离装置。
为实现上述目的，本发明提供的自动清洗水平卷膜（布）沉淀池是这样实现的：在沉淀池内装填多层水平卷膜（布）装置，每层水平卷膜（布）上形成的沉泥面均为水平面，装置将池内空间分为两个区域，膜的垂直上方为泥水分离区，膜的两端为污泥二次沉降区。通过卷膜（布）在水平方向上的周期性往复运动，将本层膜上沉积的污泥传输至装置两侧相对静止的竖向沉降区，调节卷膜速度可以控制污泥在膜上停留时间，进一步控制泥层状态和汇集的速度。在分离区，絮凝体颗粒垂直沉降在水平膜上后随膜在垂直水流方向上水平匀速缓慢移动，泥水互不干扰，各层间污泥在时间和空间上均匀分布不产生局部滞留堆积。来自分离区的污泥在水流相对封闭静止的沉降区自然沉入池底排泥区，对层间清水不产生二次扰动。根据设计选定的参数可以设置多层卷膜装置，沿水流方向及垂直水流方向均可以设置不同长度不同宽度的多组卷膜装置。两侧辊轴预先卷绕一定长度的膜（布）。装置的转动动力可以通过水下马达直接提供也可通过机械传动由水面上提供，通过采集控制速度、位置、周期等信号实现自动化运行。
在本发明的另一个方面中，在每层膜（布）的支架下面设有沿水流方向的等间距平行导流隔片，可以减小水力半径，大大降低雷诺数，抗扰动性强，可以更好地稳定水质。
在装置的两端辊轴前方设有刮泥板，能够清除膜上附着的过厚泥膜，不需要放空整池子水量即可进行清洗。
 有益效果
由于本发明采用水平移动的多层卷膜（布）和平行水流方向若干隔片的结构，从而可以得到以下有益效果：1、沉淀效率更高。目前水处理行业应用的斜管（板）、折板波纹板、水平管沉淀池型的沉泥面都与水平面存在一定的倾角，本发明的卷膜（布）与水平面夹角为零，沉泥面为水平面，沉淀面积利用率百分之百，根据水量和水质要求不同，层间距离任意设定，间距越小沉淀池停留时间越短。从而真正实现了浅池理论目标。2、沉后水水质更稳定。各层卷膜上污泥分布相对均匀，各层间污泥互不影响。单层卷膜沿移动方向上污泥分布也是均匀的，可以准确控制膜上污泥量，污泥不会随着时间延续产生局部堆积进而堵塞装置、缩小过水断面，更不会产生泥崩扰动水体，在分离区污泥状态和平移速度可控，污泥状态稳定，泥水分离是不可逆的，装置故障可以通过监控系统及时报警处置，实现自动化运行。从而彻底避免了当前应用的斜管（板）、侧向流波纹斜板、水平管等沉淀池所存在的污泥滑落过程中产生的紊流扰动影响水质的问题。3、避免装置底部区域容易堵塞不容易清洗的问题。4、节约自用水。斜板（管）、水平管沉淀池周期性清洗时池水需要全部排空，自用水量大，并且增加污泥处理系统短期负荷。本发明通过两侧的刮泥板不需要放空就可以清除膜上附着的污泥，可以长期连续运行。5、缓解了周期性清刷对污泥处理系统的冲击。
附图说明
附图1是本发明自动清洗水平卷膜（布）沉淀池的主视图；
附图2是图1所示自动清洗水平卷膜（布）沉淀池的侧视图；
附图3是图1所示自动清洗水平卷膜（布）沉淀池内污泥两次沉降分区示意图；
附图4是图1所示自动清洗水平卷膜沉（布）淀池俯视图。
 本发明的最佳实施方式
具体实施例一，图1是本发明的正立面结构示意图，包括支架1、卷膜（布）2、边辊3、卷轴4、隔片5及刮板6，动力装置可以根据需要选择水下马达提供，马达可以选择具有调速或步进功能的，传动方式还可以通过齿轮或链条减速传动，齿轮传动方式可以选择直齿、斜齿或伞齿，相邻层间也可以在进水和出水的两端交叉布置动力装置，以适应不同层高及不同角度空间要求。落入底层的污泥根据池型的排泥方式需要可以增加卷膜装置，将污泥传输至中间泥斗处。
以上具体实施例描述了本发明的基本构造和主要特征。本行业的技术人员应该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发明的原理，在不脱离本发明精神和范围的前提下，本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。
 工业实用性
加工制作简单，维修方便，可以分层拆装、局部维修，维保费用低。用于改建工程可以大幅度提高沉淀池出水水质和水量，减少自用水量及更新费用。用于新建工程可以缩减占地空间，节约土地资源 ，降低建设成本。
 

Claims (11)

  1. 一种自动清洗水平卷膜（布）沉淀池，其特征在于：主要包括膜（布）、辊轴及动力装置、平行水流方向的若干垂直隔片、两侧刮泥板。
  2. 根据权利要求1所述的自动清洗水平卷膜（布）沉淀池，其特征在于，卷膜（布）形成的沉泥面是水平面。
  3. 根据权利要求2所述的自动清洗水平卷膜（布）沉淀池，其特征在于，各层卷膜（布）之间构成浅池空间，颗粒的沉降和污泥的汇集是分区的，路径是独立的，颗粒沉淀即泥水分离。
  4. 根据权利要求2所述的自动清洗水平卷膜（布）沉淀池，其特征在于，所述的水平沉泥面是可以往复移动的，平移速度受控。
  5. 根据权利要求1所述的自动清洗水平卷膜（布）沉淀池，其特征在于，两端辊轴与池壁间形成水流相对静止的污泥二次沉降区，沉降区进水端和出水端设置挡板。
  6. 根据权利要求1所述的自动清洗水平卷膜（布）沉淀池，其特征在于，各层水平膜之间排列若干组垂直隔片，隔片底边与水平膜之间留有污泥平移空间。
  7. 根据权利要求1所述的自动清洗水平卷膜（布）沉淀池，其特征在于，卷膜两端沉降区设有刮泥板。
  8. 根据权利要求7所述的自动清洗水平卷膜（布）沉淀池，其特征在于，水平膜（布）卷入两端辊轴之前，经过刮泥板。
  9. 根据权利要求7所述的自动清洗水平卷膜（布）沉淀池，其特征在于，刮板倾角25~75度。
  10. 根据权利要求1所述的自动清洗水平卷膜（布）沉淀池，其特征在于，卷膜（布）装置是可以分层拆装的。
  11. 根据权利要求1所述的自动清洗水平卷膜（布）沉淀池，其特征在于，进一步包括：动力装置的速度、位置、周期信号采集控制。
PCT/CN2019/088724 2019-03-23 2019-05-28 一种自动清洗水平卷膜（布）沉淀池 WO2020191917A1 (zh)

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CN112707486A (zh) * 2021-02-19 2021-04-27 俞圣亚 一种适用于隔板絮凝试验装置的排泥装置

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