WO2022088328A1 - 一种沉降式淤泥原位处理装置及方法 - Google Patents

一种沉降式淤泥原位处理装置及方法 Download PDF

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WO2022088328A1
WO2022088328A1 PCT/CN2020/131051 CN2020131051W WO2022088328A1 WO 2022088328 A1 WO2022088328 A1 WO 2022088328A1 CN 2020131051 W CN2020131051 W CN 2020131051W WO 2022088328 A1 WO2022088328 A1 WO 2022088328A1
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trap
sludge
pipe
mud
trap pipe
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PCT/CN2020/131051
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English (en)
French (fr)
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胡明明
潘正国
冷家明
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无锡德林海环保科技股份有限公司
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Publication of WO2022088328A1 publication Critical patent/WO2022088328A1/zh

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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/02Biological treatment
    • C02F11/04Anaerobic treatment; Production of methane by such processes
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/12Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/13Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating

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  • the invention relates to the technical field of environmental protection equipment, and in particular, to a settling type sludge in-situ processing device and method.
  • the pollutants in the silt are mainly distributed in the floating mud and the flowing mud in the shallow 0-20 cm area of the bottom mud. It is black or grayish black, the geological deposition is relatively new, and the organic matter deposition rate is fast. It is the product of the impact of human activities (eutrophication or enclosure culture) on the water environment in recent decades.
  • This part of the silt has bedding characteristics, and is easily lifted up by comprehensive dynamic factors such as wind waves and wind blowing currents, and gathers in the downwind direction under the action of wind boosting.
  • the silt pollution layer can be resuspended in the water body when it is slightly stirred, and it is the main reservoir and release source of the source pollutants in the water body. The cleaning of bedding sludge can intuitively bring nutrients and heavy metals out of the polluted water body.
  • the existing sediment dredging technologies mainly include water conservancy scouring + pump suction, dredging + filling/shipping, stirring suction and other technologies.
  • water conservancy scouring + pump suction mainly include water conservancy scouring + pump suction, dredging + filling/shipping, stirring suction and other technologies.
  • the nutrients in the sludge are accelerated to the water body.
  • the cleared sludge needs to be dehydrated, stacked and landfilled, and it also occupies land resources, which is easy to cause secondary pollution.
  • the first object of the present invention is to provide a sedimentation type sludge in-situ treatment device, which performs drying and dehydration treatment on the sludge in situ, thereby reducing the secondary pollution of the cleared sludge to the environment.
  • this scheme can use natural factors such as lake current to concentrate the silt in the trap tube for water isolation treatment, which has little disturbance to the benthic habitat, small impact range, and little damage to the underwater ecology.
  • a settling type sludge in-situ treatment device is characterized in that: it comprises a trap pipe and a mud conveying pipe;
  • the lower end of the mud conveying pipe extends into the trap cavity of the trap pipe, and the sludge at the bottom of the trap cavity can be drawn out.
  • the present invention adopts the above technical solution, which relates to a subsidence type sludge in-situ treatment device.
  • the treatment device includes a trap pipe and a mud conveying pipe, wherein the trap pipe is used to be placed in a lake bed or a river bed, and the trap pipe connects the trap cavity to the trap cavity.
  • the silt inside is separated from the silt outside the pipe.
  • the sludge flows into the trap cavity through the action of artificial or water flow, and the sludge in the trap tube (especially the sludge at the bottom) is gradually dried under the action of natural settlement, natural pressure and the heat generated by the natural anaerobic digestion of the sludge. change.
  • the lower end of the mud conveying pipe extends into the trap cavity of the trap pipe, and the sludge in the trap pipe is removed starting from the part with the lowest mud moisture content at the bottom of the trap pipe.
  • this scheme Compared with the existing sludge cleaning, this scheme performs drying and dehydration treatment on the sludge in situ, which reduces the secondary pollution of the cleared sludge to the environment; and the scheme can use natural factors such as lake flow to concentrate the sludge in the environment.
  • the internal water isolation treatment of the trap pipe has little disturbance to the benthic habitat, small impact range, and little damage to the underwater ecology.
  • the trap pipe includes an enclosed side wall, and a trap cavity is formed in the area enclosed by the side wall; the lower end of the trap pipe is not closed, and the lower end of the mud conveying pipe is lower than the lower end of the trap pipe.
  • the sludge drying at the bottom of the mud conveying pipe largely depends on the depth of the trap pipe and the extraction position of the mud conveying pipe.
  • the lower end of the trap pipe is not closed, and the lower end of the mud conveying pipe is lower than the lower end of the trap pipe; the reason is that: the trap pipe limits the range of natural sludge settlement, and the range of natural settlement includes a certain area below the trap pipe , because this area is mainly subjected to the sedimentation pressure of the sludge in the trap tube above.
  • the lower end of the mud conveying pipe is set lower than the lower end of the trap pipe, and the trap pipe is used as much as possible to limit the range of the natural sedimentation of the sludge.
  • the difficulty of trap pipe layout the deeper the trap pipe layout, the greater the difficulty.
  • This scheme can also be reversely understood as reducing the trap pipe layout as much as possible when expanding to a suitable natural settlement depth (sludge pipe extraction depth). depth.
  • the trap pipe includes a bottom plate and a side wall arranged around the edge of the bottom plate, and a trap cavity is formed between the side wall and the bottom plate; the lower end of the mud conveying pipe is placed in the lower region of the trap cavity.
  • the technical solution also provides a mud guide groove, through the setting of the mud guide groove, the sludge far from the sedimentation sludge in-situ treatment device flows into the mud guide groove under the action of the lake flow, and then enters the trap pipe from the mud guide groove to realize the sludge removal. Natural collection.
  • the mud conveying pipe is provided with a mud conveying pump, and the mud conveying pump is located inside the trap pipe.
  • a settlement type sludge in-situ treatment method is characterized in that: comprising the following steps:
  • the step S1 includes arranging a mud guide groove or digging a mud guide groove along the radial direction of the trap pipe; the mud close to the trap port of a sedimentation type sludge in-situ treatment device directly flows into the trap pipe under the action of the lake flow , the sludge far from a settlement type sludge in-situ treatment device flows into the sludge guide tank under the action of the lake current, and then enters the trap pipe from the sludge guide tank to realize the natural collection of sludge.
  • FIG. 1 is a cross-sectional view of the sedimentation type sludge in-situ treatment device in Example 1.
  • FIG. 1 is a cross-sectional view of the sedimentation type sludge in-situ treatment device in Example 1.
  • FIG. 2 is a top view of the sedimentation type sludge in-situ treatment device in Example 1.
  • FIG. 2 is a top view of the sedimentation type sludge in-situ treatment device in Example 1.
  • first and second are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as “first” or “second” may expressly or implicitly include one or more of that feature.
  • plural means two or more, unless otherwise expressly defined.
  • the terms “installed”, “connected”, “connected”, “fixed” and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrally connected; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or the internal communication between the two components.
  • installed e.g., it may be a fixed connection or a detachable connection , or integrally connected; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or the internal communication between the two components.
  • a first feature "on” or “under” a second feature may include the first and second features in direct contact, or may include the first and second features Not directly but through additional features between them.
  • the first feature being “above”, “over” and “above” the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature.
  • the first feature is “below”, “below” and “below” the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.
  • the present embodiment relates to a sedimentation type sludge in-situ treatment device, including a trap pipe 2 , a mud conveying pipe 3 , and several mud guiding grooves 6 radially arranged relative to the trap pipe 2 .
  • the trap tube 2 is used to be placed in the lake bed 7 or the river bed, and the trap tube 2 forms a trap cavity 21 for storing the sludge 5 inside.
  • the depth of the proximal end of the mud guiding groove 6 is greater than the depth of the distal end and the proximal end points to the trap cavity 21.
  • the mud guiding tank 6 in this scheme is used as a trap-type sludge in-situ treatment device, which is a kind of groove member and is an integral part of the device.
  • the mud guiding groove 6 can also be a trench temporarily excavated on the river bed, and at this time, the mud guiding groove 6 is not a component part of the sedimentation type sludge in-situ treatment device.
  • the upper end of the mud conveying pipe 3 is higher than the water surface 4 , and the lower end of the mud conveying pipe 3 extends into the trap cavity 21 of the trap pipe 2 .
  • the mud conveying pipe 3 is provided with a mud conveying pump 31 .
  • the mud conveying pump 31 is located inside the trap pipe 2 .
  • the mud conveying pump 31 provides power for the mud conveying pipe 3 and can pump out the mud at the bottom of the trap cavity 21 .
  • the mud conveying pump 31 can also be arranged outside, as long as it can provide power for the mud conveying pipe 3 .
  • the treatment device includes a trap pipe 2 and a mud conveying pipe 3, wherein the trap pipe is used to be placed in a lake bed or a river bed, and the trap pipe separates the sludge in the trap cavity 21 from the sludge outside the pipe.
  • the sludge flows into the trap cavity 21 through the action of artificial or water flow, and the sludge in the trap pipe 2 (especially the sludge at the bottom) generates heat due to natural settlement, natural pressure and the natural anaerobic digestion of the sludge. gradually dry down.
  • the lower end of the mud conveying pipe 3 extends into the trap cavity 21 of the trap pipe 2, and the sludge in the trap pipe is removed starting from the part with the lowest water content of the mud at the bottom of the trap pipe.
  • the trap pipe 2 includes an enclosed side wall, and a trap cavity 21 is formed in the area enclosed by the side wall; the lower end of the trap pipe 2 is not closed, and the mud conveying pipe The lower end of 3 is lower than the lower end of trap tube 2 .
  • the sludge drying situation at the bottom of the mud conveying pipe 3 largely depends on the depth of the trap pipe 2 and the extraction position of the mud conveying pipe 3.
  • the lower end of the trap pipe 2 is not closed, and the lower end of the mud conveying pipe 3 is lower than the lower end of the trap pipe 2; the reason is: the trap pipe 2 limits the range of natural sludge settlement, and the range of natural settlement includes the trap A certain area below the pipe 2, because this area is mainly subjected to the sedimentation pressure of the sludge in the trap pipe 2 above.
  • the lower end of the mud conveying pipe 3 is set lower than the lower end of the trap pipe 2, and the trap pipe 2 is used as much as possible to limit the range of the natural sedimentation of the sludge. Considering the difficulty of arranging the trap pipe 2, the deeper the trap pipe 2 is, the more difficult it will be.
  • the trap pipe includes a bottom plate and a side wall arranged around the edge of the bottom plate, and a trap cavity is formed between the side wall and the bottom plate; the lower end of the mud conveying pipe is placed in the trap cavity lower area.
  • the difference between the above two schemes is whether the lower end of the trap tube is closed, which can be determined according to the environmental protection requirements of the project location: if there are fissures, karst caves, etc. in the geology of the project selection area, it needs to be closed, and if the geology of the project selection area is rock, etc., it may not be closed.
  • the settlement type sludge in-situ treatment device described in this embodiment can dry and dehydrate the sludge in-situ, which reduces the impact of the cleared sludge on the environment.
  • the scheme can use natural factors such as lake flow to concentrate the silt in the trap tube for water isolation treatment, which has little disturbance to the benthic habitat, small impact range, and little damage to the underwater ecology.
  • the present embodiment relates to a settlement type sludge in-situ treatment method, and the treatment method specifically adopts the settlement type sludge in-situ treatment device in the above-mentioned embodiment 1, which specifically includes the following steps:
  • the sludge at the bottom of the trap tube 2 is gradually dried under the action of natural settlement, natural pressure and the heat generated by the natural anaerobic digestion of the sludge; after the drying moisture content is lower than the preset standard, it is transported or pumped through a pump.
  • the sludge conveying pipe 3 sucks out the dried sludge at the bottom of the trap pipe 2 by suction; meanwhile, the upper end of the trap pipe is filled with sludge 5 by natural or artificial means.
  • How to judge whether the dry moisture content of the sludge at the bottom of the trap pipe 2 is lower than the preset standard in the above-mentioned settlement type sludge in-situ treatment method can be determined by real-time detection of the moisture content of the sludge extracted from the mud conveying pipe 3 and the detection result.
  • the mud conveying pipe 3 extracts the sludge
  • the upper end of the trap pipe 2 will be filled with sludge. Therefore, during the extraction process, there will be insufficient time for sludge deposition to reach the drying standard. At this time, it is necessary to stop the mud conveying pipe 3 and continue to pump out. , wait for a while and continue working.
  • the effect of adopting the above-mentioned sedimentation type sludge in-situ treatment method can also refer to the content recorded in the description of the treatment device in Example 1; as a whole, in this solution, a trap cavity 21 is formed by the trap tube 2, so that the sludge is within its limit.
  • Natural subsidence within the range the soil pressure generated by the subsidence and the water pressure of the river and lake above, combined with the natural anaerobic digestion of the silt to generate heat; it can promote the gradual drying of the silt at the bottom of the trap pipe 2; finally, a certain drying rate will be reached
  • the sludge is preferentially extracted, which reduces the secondary pollution of the cleared sludge to the environment.

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Abstract

本发明涉及环保设备技术领域,尤其涉及一种沉降式淤泥原位处理装置及方法。一种沉降式淤泥原位处理装置,包括陷阱管(2)和输泥管;所述陷阱管(2)用于置入湖床(7)或河床内,陷阱管(2)内部构成用于存放淤泥(5)的陷阱腔;所述输泥管的下端伸入所述陷阱管(2)的陷阱腔内,能够将陷阱腔底部的淤泥抽出。该方案在原位上对于淤泥进行干化、脱水处理,降低了清出的淤泥对于环境的二次污染;并且该方案可利用湖流等自然因素将淤泥集中在陷阱管内部隔水处理,对底栖生境扰动小,影响范围小,对水底生态破坏小。

Description

一种沉降式淤泥原位处理装置及方法 技术领域
本发明涉及环保设备技术领域,尤其涉及一种沉降式淤泥原位处理装置及方法。
背景技术
随着生活水平的不断提高和人们环保意识的逐渐增强,人们对周边生活环境和生存空间质量都非常关注。面对日益恶化的各种环境,改善和治理的呼声越来越高。其中水体环境的保护和治污尤显突出。城市及其周围地区各种水体环境(包括水库、湖泊、河道、沟渠等)由于治理难度大,多年未治理使得大量淤泥沉积于水底,严重影响水体环境,使得水质变黑发臭,扰民问题时有发生。水体清淤是将河道、湖泊等的淤泥从水底切削、收集、抽取、输送至特定的地区集中进行环保处理的全过程。城市淤泥中生活垃圾、建筑垃圾堆积成山,湖底蕴藏大量的沼气、毒气、臭气甚至带有重金属等有害污染物质。如何进行环保清淤、清出的淤泥如何处理是当今国际社会都在探讨的问题。如果某个环节处理不好,清淤工程将带来严重的、大面积的二次污染,后果不堪设想。
淤泥中的污染物主要分布在底泥浅层0~20厘米的区域的浮泥以及流泥中,上部呈浆状(浮泥),下部呈流塑状(流泥),有臭味,一般呈黑色或灰黑色,地质沉积年代较新,有机质沉积速度快,为近几十年人类活动(富营养化或围隔养殖)对水环境影响的产物。此部分淤泥呈现推移质特征,极易在风浪、风吹流等综合动力因素作用下被掀起,并在风力助推作用下,向下风向聚集。淤泥的污染层在水体中稍微被搅动就能再悬浮,是水体内源污染物的主要蓄积库和释放源。推移质淤泥的清理,能够很直观的把污染水体的营养盐和重金属带出水体。
现有的底泥清淤技术主要有水利冲刷+泵吸、挖泥+吹填/船运、搅吸等技术,上述技术在实施过程中不但存在搅动底泥,加速淤泥中的营养盐向水体中释放的危害,清出的淤泥需要脱水、堆放和填埋还占用土地资源,易造成二次污染,甚至在乏科学认知和深入调研的情况下,把底泥挖出来清理掉,打破原有湖床河道水生态系统。针对上述弊端,有提出采用在需要底泥清淤出开挖一定数量及深度的淤泥捕获沟渠,通过自然水动力带动的浮泥、流泥经过沟渠时跌落到沟渠底部,此法虽然减少了清淤过程中底泥扰动的程度,但淤泥填满清出时仍面临脱水、堆放和填埋等问题,鉴于上述技术的各种缺陷,有必要对现有清淤技术中使用的装备进行改进,以实现原位的处理,降低淤泥处置过程中产生的次生危害。
发明内容
为了解决上述问题,本发明的第一目的在于提供一种沉降式淤泥原位处理装置,该方案在原位上对于淤泥进行干化、脱水处理,降低了清出的淤泥对于环境的二次污染;并且该方案可利用湖流等自然因素将淤泥集中在陷阱管内部隔水处理,对底栖生境扰动小,影响范围小,对水底生态破坏小。
为了实现上述的目的,本发明采用了以下的技术方案:
一种沉降式淤泥原位处理装置,其特征在于:包括陷阱管和输泥管;
所述陷阱管用于置入湖床或河床内,陷阱管内部构成用于存放淤泥的陷阱腔;
所述输泥管的下端伸入所述陷阱管的陷阱腔内,能够将陷阱腔底部的淤泥抽出。
本发明采用上述技术方案,该技术方案涉及一种沉降式淤泥原位处理装置,该处理装置包括陷阱管和输泥管,其中的陷阱管用于置入湖床或河床内,陷阱管将陷阱腔内的淤泥与管外的淤泥分隔开。处理淤泥时,通过人工或水体流动的作用使淤泥流入陷阱腔,陷阱管内的淤泥(尤其是底部位置的淤泥)在自然沉降、自然压力以及淤泥自然发生厌氧消化作用产生热量的作用下逐渐干化。输泥管的下端伸入所述陷阱管的陷阱腔内,先从位于陷阱管底部淤泥含水率最低的部分开始,将陷阱管内的淤泥清除。
与现有淤泥清理相比,该方案在原位上对于淤泥进行干化、脱水处理,降低了清出的淤泥对于环境的二次污染;并且该方案可利用湖流等自然因素将淤泥集中在陷阱管内部隔水处理,对底栖生境扰动小,影响范围小,对水底生态破坏小。
作为优选,所述陷阱管包括围合设置的侧壁,侧壁所围合区域内构成陷阱腔;所述陷阱管的下端部未封闭,输泥管的下端部低于陷阱管的下端部。在上述技术方案的基础上,输泥管底部的淤泥干化情况在很大程度上取决于陷阱管的深度,以及输泥管的抽取位置。本方案限定陷阱管的下端部未封闭,输泥管的下端部低于陷阱管的下端部;其原因在于:陷阱管限定了淤泥自然沉降的范围,该自然沉降的范围包括陷阱管下方一定区域,因为该区域主要受到上方陷阱管内的淤泥沉降压力。在此情况下,将输泥管的下端部设置低于陷阱管的下端部,是尽可能利用了陷阱管限定了淤泥自然沉降的范围。考虑到陷阱管布置的难度,陷阱管布置越深其难度越大,此方案也可反向理解为在拓展到合适的自然沉降深度(输泥管抽取深度)时,尽可能减小陷阱管布置的深度。
在另外一种实施方案中,所述陷阱管包括底板以及围绕底板边缘设置的侧壁,侧壁和底板之间构成陷阱腔;所述输泥管的下端置于陷阱腔下部区域。
作为优选,还包括相对所述陷阱管径向布置的若干条导泥槽,导泥槽的近端深度大于远端深度且近端指向陷阱腔。该技术方案还设置导泥槽,通过导泥槽的设置,使远离沉降式淤 泥原位处理装置的淤泥在湖流的作用下流进导泥槽,再从导泥槽进入陷阱管内,实现淤泥的自然收集。
作为优选,所述输泥管上设置有输泥泵,输泥泵处于陷阱管内部。
一种沉降式淤泥原位处理方法,其特征在于:包括如下步骤:
S1:将陷阱管及其陷阱腔内的输泥管置入湖床或河床内,淤泥自然或人为流入陷阱管中,直至装满不再沉降为止;
S2:陷阱管底部位置的淤泥在自然沉降、自然压力以及淤泥自然发生厌氧消化作用产生热量的作用下逐渐干化;待其干化含水率低于预设标准后,输泥管将陷阱管底部干化的淤泥抽出;同时,陷阱管上端通过自然或人为方式补入淤泥。
S3:直至陷阱管处理范围内的淤泥处理完成。
作为优选,所述步骤S1包括布置导泥槽或挖取沿陷阱管径向布置导泥槽;靠近一种沉降式淤泥原位处理装置陷阱口的淤泥在湖流的作用下直接流入到陷阱管内,远离一种沉降式淤泥原位处理装置的淤泥在湖流的作用下流进导泥槽,再从导泥槽进入陷阱管内,实现淤泥的自然收集。
附图说明
图1为实施例1中的沉降式淤泥原位处理装置剖视图。
图2为实施例1中的沉降式淤泥原位处理装置俯视图。
具体实施方式
下面详细描述本发明的实施例,所述实施例的示例在附图中示出,其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的,旨在用于解释本发明,而不能理解为对本发明的限制。
在本发明的描述中,需要理解的是,术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“顺时针”、“逆时针”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本发明和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本发明的限制。
此外,术语“第一”、“第二”仅用于描述目的,而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此,限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本发明的描述中,除非另有说明,“多个”的含义是两个或两个以上,除非另有明确的限定。
在本发明中,除非另有明确的规定和限定,术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或一体地连接;可以是机械连接,也可以是电连接;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通。对于本领域的普通技术人员而言,可以根据具体情况理解上述术语在本发明中的具体含义。
在本发明中,除非另有明确的规定和限定,第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触,也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且,第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方,或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方,或仅仅表示第一特征水平高度小于第二特征。
实施例1:
如图1和2所示,本实施例涉及一种沉降式淤泥原位处理装置,包括陷阱管2和输泥管3,以及相对所述陷阱管2径向布置的若干条导泥槽6。
所述陷阱管2用于置入湖床7或河床内,陷阱管2内部构成用于存放淤泥5的陷阱腔21。所述导泥槽6的近端深度大于远端深度且近端指向陷阱腔21,通过导泥槽的设置,使远离沉降式淤泥原位处理装置的淤泥在湖流的作用下流进导泥槽,再从导泥槽进入陷阱管内,实现淤泥的自然收集。此方案中的导泥槽6作为陷阱式淤泥原位处理装置,是一种沟槽构件,为装置的一组成部分。当然导泥槽6也可以是临时在河床上开挖的沟渠,此时导泥槽6就不作为沉降式淤泥原位处理装置的组成部分。
所述输泥管3的上端高于水面4,输泥管3的下端伸入所述陷阱管2的陷阱腔21内。所述输泥管3上设置有输泥泵31,输泥泵31处于陷阱管2内部,输泥泵31为输泥管3提供动力,能够将陷阱腔21底部的淤泥抽出。在另外一种实施方案中,所述的输泥泵31也可设置在外部,只要能够为输泥管3提供动力即可。该处理装置包括陷阱管2和输泥管3,其中的陷阱管用于置入湖床或河床内,陷阱管将陷阱腔21内的淤泥与管外的淤泥分隔开。处理淤泥时,通过人工或水体流动的作用使淤泥流入陷阱腔21,陷阱管2内的淤泥(尤其是底部位置的淤泥)在自然沉降、自然压力以及淤泥自然发生厌氧消化作用产生热量的作用下逐渐干化。输泥管3的下端伸入所述陷阱管2的陷阱腔21内,先从位于陷阱管底部淤泥含水率最低的部分开始,将陷阱管内的淤泥清除。
在如图1所示的优选方案中,所述陷阱管2包括围合设置的侧壁,侧壁所围合区域内构成陷阱腔21;所述陷阱管2的下端部未封闭,输泥管3的下端部低于陷阱管2的下端部。在 上述技术方案的基础上,输泥管3底部的淤泥干化情况在很大程度上取决于陷阱管2的深度,以及输泥管3的抽取位置。本方案限定陷阱管2的下端部未封闭,输泥管3的下端部低于陷阱管2的下端部;其原因在于:陷阱管2限定了淤泥自然沉降的范围,该自然沉降的范围包括陷阱管2下方一定区域,因为该区域主要受到上方陷阱管2内的淤泥沉降压力。在此情况下,将输泥管3的下端部设置低于陷阱管2的下端部,是尽可能利用了陷阱管2限定了淤泥自然沉降的范围。考虑到陷阱管2布置的难度,陷阱管2布置越深其难度越大,此方案也可反向理解为在拓展到合适的自然沉降深度(输泥管3抽取深度)时,尽可能减小陷阱管2布置的深度。在另外一种实施方案中(本方案图略),所述陷阱管包括底板以及围绕底板边缘设置的侧壁,侧壁和底板之间构成陷阱腔;所述输泥管的下端置于陷阱腔下部区域。上述两种方案区别在于陷阱管下端是否封闭,此可根据项目所在地的环保要求决定:若项目选择区地质存在裂隙、溶洞等则需要封闭,若项目选择区地质为岩石等则可以不封闭。
综上所述,该实施例记载的沉降式淤泥原位处理装置与现有淤泥清理相比,该方案在原位上对于淤泥进行干化、脱水处理,降低了清出的淤泥对于环境的二次污染;并且该方案可利用湖流等自然因素将淤泥集中在陷阱管内部隔水处理,对底栖生境扰动小,影响范围小,对水底生态破坏小。
实施例2:
本实施例涉及一种沉降式淤泥原位处理方法,该处理方法具体采用上述实施例1中的沉降式淤泥原位处理装置,其具体包括如下步骤:
S1:将陷阱管2及其陷阱腔21内的输泥管3置入湖床7或河床内,布置导泥槽6或挖取沿陷阱管2径向布置导泥槽6;靠近一种沉降式淤泥原位处理装置陷阱口的淤泥在湖流的作用下直接流入到陷阱管2内,远离一种沉降式淤泥原位处理装置的淤泥在湖流的作用下流进导泥槽6,再从导泥槽6进入陷阱管2内,直至装满不再沉降为止,实现淤泥的自然收集。在可替换的实施方案中,也可不设置导泥槽6,将淤泥5采用人工方式流入陷阱管2中。
S2:陷阱管2底部位置的淤泥在自然沉降、自然压力以及淤泥自然发生厌氧消化作用产生热量的作用下逐渐干化;待其干化含水率低于预设标准后,通过泵输送或抽吸的方式输泥管3将陷阱管2底部干化的淤泥抽出;同时,陷阱管上端通过自然或人为方式补入淤泥5。
S3:直至陷阱管2处理范围内的淤泥处理完成。
上述沉降式淤泥原位处理方法中如何判断陷阱管2底部淤泥的干化含水率是否低于预设标准,可通过实时检测输泥管3抽出的淤泥含水量,通过检测结果判断。实际实施时,输泥管3抽取淤泥时,陷阱管2上端会有淤泥补入,故在抽取过程中会存在淤泥沉积时间不够而无法达到干化标准,此时需要停止输泥管3继续抽出,等待一段时间后继续工作。
采用上述沉降式淤泥原位处理方法的效果也可参考实施例1中对于处理装置描述时所记载的内容;整体来说,该方案通过陷阱管2构成了一陷阱腔21,使淤泥在其限定的范围内自然沉降,沉降产生的土层压力以及上方的河湖水压力,配合淤泥自然发生厌氧消化作用产生热量;能够促进陷阱管2底部位置的淤泥逐渐干化;最后将达到一定干化率的淤泥优先抽出,降低了清出的淤泥对于环境的二次污染。
在本说明书的描述中,参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中,对上述术语的示意性表述不一定指的是相同的实施例或示例。而且,描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
尽管上面已经示出和描述了本发明的实施例,可以理解的是,上述实施例是示例性的,不能理解为对本发明的限制,本领域的普通技术人员在不脱离本发明的原理和宗旨的情况下在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (7)

  1. 一种沉降式淤泥原位处理装置,其特征在于:包括陷阱管(2)和输泥管(3);
    所述陷阱管(2)用于置入湖床(7)或河床内,陷阱管(2)内部构成用于存放淤泥(5)的陷阱腔(21);
    所述输泥管(3)的下端伸入所述陷阱管(2)的陷阱腔(21)内,能够将陷阱腔(21)底部的淤泥抽出。
  2. 根据权利要求1所述的一种沉降式淤泥原位处理装置,其特征在于:所述陷阱管(2)包括围合设置的侧壁,侧壁所围合区域内构成陷阱腔(21);所述陷阱管(2)的下端部未封闭,输泥管(3)的下端部低于陷阱管(2)的下端部。
  3. 根据权利要求1所述的一种沉降式淤泥原位处理装置,其特征在于:所述陷阱管(2)包括底板以及围绕底板边缘设置的侧壁,侧壁和底板之间构成陷阱腔(21);所述输泥管的下端置于陷阱腔(21)下部区域。
  4. 根据权利要求1或2或3所述的一种沉降式淤泥原位处理装置,其特征在于:还包括相对所述陷阱管(2)径向布置的若干条导泥槽(6),导泥槽(6)的近端深度大于远端深度且近端指向陷阱腔(21)。
  5. 根据权利要求1所述的一种沉降式淤泥原位处理装置,其特征在于:所述输泥管(3)上设置有输泥泵(31),输泥泵(31)处于陷阱管(2)内部。
  6. 一种沉降式淤泥原位处理方法,其特征在于:包括如下步骤:
    S1:将陷阱管及其陷阱腔内的输泥管置入湖床或河床内,淤泥自然或人为流入陷阱管中,直至装满不再沉降为止;
    S2:陷阱管(2)底部位置的淤泥在自然沉降、自然压力以及淤泥自然发生厌氧消化作用产生热量的作用下逐渐干化;待其干化含水率低于预设标准后,输泥管(3)将陷阱管(2)底部干化的淤泥抽出;同时,陷阱管上端通过自然或人为方式补入淤泥(5);
    S3:直至陷阱管(2)处理范围内的淤泥处理完成。
  7. 根据权利要求6所述的一种沉降式淤泥原位处理方法,其特征在于:所述步骤S1包括布置导泥槽(6)或挖取沿陷阱管(2)径向布置导泥槽(6);靠近一种沉降式淤泥原位处理装置陷阱口的淤泥在湖流的作用下直接流入到陷阱管(2)内,远离一种沉降式淤泥原位处理装置的淤泥在湖流的作用下流进导泥槽(6),再从导泥槽(6)进入陷阱管(2)内,实现淤泥的自然收集。
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