CN106499041A - A kind of Water Collection Tank in Drainage Pumping Station efficiently cuts dirty system - Google Patents
A kind of Water Collection Tank in Drainage Pumping Station efficiently cuts dirty system Download PDFInfo
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- CN106499041A CN106499041A CN201610965443.3A CN201610965443A CN106499041A CN 106499041 A CN106499041 A CN 106499041A CN 201610965443 A CN201610965443 A CN 201610965443A CN 106499041 A CN106499041 A CN 106499041A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 97
- 238000005086 pumping Methods 0.000 title claims abstract description 28
- 239000010865 sewage Substances 0.000 claims abstract description 184
- 238000009418 renovation Methods 0.000 abstract description 2
- 239000003344 environmental pollutant Substances 0.000 description 6
- 231100000719 pollutant Toxicity 0.000 description 6
- 230000007423 decrease Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 238000012938 design process Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000004941 influx Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
- E03F5/105—Accessories, e.g. flow regulators or cleaning devices
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/14—Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/22—Adaptations of pumping plants for lifting sewage
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F2201/00—Details, devices or methods not otherwise provided for
- E03F2201/10—Dividing the first rain flush out of the stormwater flow
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
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- Sewage (AREA)
Abstract
本发明涉及一种排水泵站集水池高效截污系统，包括雨水集水池、开设在雨水集水池一侧的雨水进水管、设置在雨水集水池中并依次与雨水进水管相连通的进水渠以及污水收集池，进水渠中设有进水格栅，污水收集池与雨水集水池相互隔离设置，并通过可启闭闸门与雨水集水池相连通，并且污水收集池中设有污水截流泵，该污水截流泵的出口通过污水管网连接至污水处理厂，雨水集水池中设有雨水泵，该雨水泵的出口通过雨水管连接至外界水体。与现有技术相比，本发明系统整体结构简单，模块化清晰，可用于新建排水泵站和现有排水泵站的改造设计，能显著提高排水泵站有效截污能力，降低雨天溢流污染风险，社会经济效益好，具有很好的应用前景。
The invention relates to a high-efficiency sewage interception system for a sump of a drainage pumping station, comprising a rainwater sump, a rainwater inlet pipe arranged on one side of the rainwater sump, an inlet channel arranged in the rainwater sump and connected to the rainwater inlet pipe in turn, and Sewage collection tank, water inlet grille is set in the water inlet channel, the sewage collection tank and rainwater collection tank are separated from each other, and are connected to the rainwater collection tank through an openable gate, and a sewage interception pump is installed in the sewage collection tank. The outlet of the sewage interception pump is connected to the sewage treatment plant through the sewage pipe network, and the rainwater pump is arranged in the rainwater collection tank, and the outlet of the rainwater pump is connected to the external water body through the rainwater pipe. Compared with the prior art, the overall structure of the system of the present invention is simple, and the modularization is clear, which can be used in the renovation design of new drainage pumping stations and existing drainage pumping stations, can significantly improve the effective interception capacity of drainage pumping stations, and reduce overflow pollution in rainy days Risk, good social and economic benefits, has a good application prospect.
Description
技术领域technical field
本发明属于雨污水处理技术领域，涉及一种排水泵站集水池高效截污系统。The invention belongs to the technical field of rainwater and sewage treatment, and relates to a high-efficiency sewage interception system for a sump of a drainage pumping station.
背景技术Background technique
目前，我国正处在城市化快速发展的阶段，随着城市化水平的提高和经济的快速发展，城市雨水问题就愈发凸现出来。主要表现为：雨水径流污染严重；城市洪涝灾害风险加大；雨水资源大量流失；城市生态环境破坏严重等。我国城市排水系统的规划设计很多还只停留在如何尽快地将城市雨水直接排放和简单地依赖“雨污分流”等传统观念上，这将不能满足现代城市发展和生态环境保护的要求。城市雨水问题不仅是制约国民经济发展的重要因素，而且是威胁人民健康和生命财产安全的严重社会问题。At present, my country is in the stage of rapid urbanization. With the improvement of urbanization level and rapid economic development, the problem of urban rainwater becomes more and more prominent. The main manifestations are: serious pollution of rainwater runoff; increased risk of urban flood disasters; massive loss of rainwater resources; serious damage to the urban ecological environment, etc. Many of the planning and design of urban drainage systems in our country still only stay on how to directly discharge urban rainwater as soon as possible and simply rely on traditional concepts such as "rainwater and sewage diversion", which will not meet the requirements of modern urban development and ecological environment protection. The urban rainwater problem is not only an important factor restricting the development of the national economy, but also a serious social problem that threatens people's health and the safety of life and property.
排水泵站用于汇水服务区收集的雨水排放，可分为合流泵站(服务于合流制排水系统)和雨水泵站(服务于分流制排水系统)。在合流制排水系统中，晴天、初雨和小雨时，管道中雨污水流量小，设计的旱天污水截流泵，因流量小致使污染物质易沉积在排水管道和排水泵站集水池内，只能有效将污水量进行截流，而难以将对应的污染物或污染负荷有效截流；雨天溢流或雨水泵放江时，前期累积的沉积物或污染负荷受到高流速的雨水冲刷随溢流放江，对受纳水体水质产生严重影响。同时，我国分流制排水系统的雨水管网，因各种原因导致雨水管网混接了不同程度的污水，成为事实上的合流制管网，尽管雨水泵站在改造中增设了污水截留泵，但同样存在类似合流泵站的雨天溢流放江污染。The drainage pumping station is used for the discharge of rainwater collected in the catchment service area, which can be divided into a combined drainage system (serving the combined drainage system) and a rainwater pumping station (serving the diversion drainage system). In the combined drainage system, during sunny days, early rains and light rains, the flow of rainwater and sewage in the pipeline is small, and the designed sewage interception pump in dry weather is easy to deposit pollutants in the drainage pipeline and the sump of the drainage pumping station due to the small flow. It can effectively intercept the amount of sewage, but it is difficult to effectively intercept the corresponding pollutants or pollution loads; when the overflow in rainy days or the rainwater pump is released into the river, the sediment or pollution load accumulated in the previous period will be washed by the high-velocity rainwater and released into the river with the overflow. Serious impact on the water quality of the receiving water body. At the same time, due to various reasons, the rainwater pipe network of my country's separate drainage system has been mixed with different degrees of sewage, which has become a de facto combined pipe network. There is rainy day overflow discharge river pollution similar to the confluence pumping station.
授权公告号为CN203684373U的中国专利公布了一种提高城市防涝标准和控制水污染的设备，建立城市深层隧道系统，深层隧道系统包括主体隧道、连接竖井和排水泵站，排水泵站设有排空泵组和排洪泵组，主体隧道水平设置于城市地面以下至少30m，多个连接竖井分布于主体隧道上方，连接竖井的下端与主体隧道连接通，连接竖井的上端通过控制阀与城市浅层截污管道连接，排水泵站设于近主体隧道和城市下游水道以及城市排污水道旁，排空泵组通过管道将主体隧道与城市排污水道连通，排洪泵组通过管道将主体隧道与城市下游水道连通。The Chinese patent with the authorized announcement number CN203684373U discloses a device for improving urban waterlogging prevention standards and controlling water pollution, and establishes an urban deep tunnel system. The deep tunnel system includes a main tunnel, a connecting shaft and a drainage pumping station. For the empty pump unit and the flood pump unit, the main tunnel is set horizontally at least 30m below the urban ground, and multiple connecting shafts are distributed above the main tunnel. The drainage pump station is located near the main tunnel, the urban downstream waterway and the urban sewage channel. The emptying pump unit connects the main tunnel with the urban sewage channel through the pipeline, and the flood discharge pump unit connects the main tunnel with the urban sewage channel through the pipeline. Downstream waterway connection.
发明内容Contents of the invention
针对现有排水泵站集水池污染物易于沉积，导致旱天污水截流泵不能有效截流等量污染负荷的技术缺陷，本发明提供了一种经济实用，可显著提高排水泵站有效截污能力，降低雨天溢流污染风险的排水泵站集水池高效截污系统。Aiming at the technical defect that the pollutants in the sump of the existing drainage pumping station are easy to deposit, causing the sewage interception pump in dry weather to be unable to effectively intercept the same amount of pollution load, the present invention provides an economical and practical method that can significantly improve the effective sewage interception capacity of the drainage pumping station. High-efficiency sewage interception system for drainage pumping station sump to reduce the risk of overflow pollution in rainy days.
本发明的目的可以通过以下技术方案来实现：The purpose of the present invention can be achieved through the following technical solutions:
一种排水泵站集水池高效截污系统，该系统包括雨水集水池、开设在雨水集水池一侧的雨水进水管、设置在雨水集水池中并依次与雨水进水管相连通的进水渠以及污水收集池，所述的进水渠中设有进水格栅，所述的污水收集池与雨水集水池相互隔离设置，并通过可启闭闸门与雨水集水池相连通，并且所述的污水收集池中设有污水截流泵，该污水截流泵的出口通过污水管网连接至污水处理厂，所述的雨水集水池中设有雨水泵，该雨水泵的出口通过雨水管连接至外界水体。A high-efficiency sewage interception system for a sump of a drainage pumping station, the system includes a rainwater sump, a rainwater inlet pipe arranged on one side of the rainwater sump, an inlet channel arranged in the rainwater sump and connected to the rainwater inlet pipe in turn, and sewage A collection pond, the water inlet channel is provided with a water inlet grille, the sewage collection pond and the rainwater collection pond are isolated from each other, and are connected with the rainwater collection pond through an openable and closed gate, and the sewage collection pond A sewage interception pump is provided in the center, and the outlet of the sewage interception pump is connected to the sewage treatment plant through the sewage pipe network. The rainwater collection tank is provided with a rainwater pump, and the outlet of the rainwater pump is connected to the external water body through the rainwater pipe.
所述的污水收集池顶部敞口，池壁顶端为堰顶溢流堰。The top of the sewage collection pool is open, and the top of the pool wall is a weir top overflow weir.
所述的污水收集池的池底设有向污水截流泵倾斜的斜坡，该斜坡的坡度≥10％。The bottom of the sewage collection tank is provided with a slope inclined towards the sewage interception pump, and the slope of the slope is ≥ 10%.
所述的污水截流泵至少设有2台，所述的污水收集池的有效容积不低于出水量最大的一台污水截流泵5分钟的出水量。There are at least two sewage shut-off pumps, and the effective volume of the sewage collection tank is not less than the 5-minute output of the sewage shut-off pump with the largest water output.
所述的污水收集池中沿进水方向的侧壁上开设有用于安装可启闭闸门的孔口，该孔口的底端标高与雨水集水池的池底标高相同。An orifice for installing an openable and closable gate is opened on the side wall of the sewage collection tank along the water inlet direction, and the bottom elevation of the orifice is the same as that of the bottom of the rainwater collection tank.
所述的孔口的截面积大于雨水进水管管径的等效面积。The cross-sectional area of the orifice is greater than the equivalent area of the diameter of the rainwater inlet pipe.
所述的可启闭闸门选自手动闸板阀、自动闸板阀或橡胶坝。The openable gate is selected from a manual gate valve, an automatic gate valve or a rubber dam.
所述的雨水进水管与进水渠相连通的位置处设有进水闸板阀。A water inlet gate valve is provided at the position where the rainwater inlet pipe communicates with the water inlet channel.
在实际设计过程中，雨水集水池连接上游合流或雨水进水管，而雨水进水管的设计直径和坡度由服务区特性确定。雨水集水池中沿水流方向依次为进水闸板阀、用于拦截粗大杂质和漂浮物的进水渠和进水格栅、连接进水渠的污水收集池。In the actual design process, the rainwater collection tank is connected to the upstream confluence or rainwater inlet pipe, and the design diameter and slope of the rainwater inlet pipe are determined by the characteristics of the service area. Along the direction of water flow in the rainwater collection tank, there are water inlet gate valves, water inlet channels and water inlet grilles for intercepting coarse impurities and floating objects, and sewage collection tanks connected to the water inlet channels.
污水收集池内有至少2台污水截流泵及其配套管道系统，单台污水截流泵的设计流量按照该排水系统服务区内的旱流污水或混接污水量最高日最高时与截流倍数取值设计。污水收集池的尺寸设计：污水收集池的池壁标高按照(雨水进水管顶标高-200mm堰顶水头)取值，由污水收集池的计算容积确定周长，以此初步确定污水收集池设计尺寸。There are at least 2 sewage interception pumps and their supporting piping systems in the sewage collection tank, and the design flow rate of a single sewage interception pump is designed according to the maximum daily time of dry sewage or mixed sewage in the service area of the drainage system and the interception multiple value . The size design of the sewage collection tank: the wall elevation of the sewage collection tank is taken according to (the elevation of the top of the rainwater inlet pipe - 200mm weir crest head), and the perimeter is determined by the calculated volume of the sewage collection tank, so as to preliminarily determine the design size of the sewage collection tank .
雨天堰顶溢流校核：按照水力学堰顶溢流计算污水收集池的堰顶溢流量，应不小于排水系统雨天设计流量(按满管流考虑)。若不能满足，可调整污水收集池的堰高或堰顶周长(也即污水收集池堰顶溢流的边长)，直至满足设计约束条件。Weir crest overflow check in rainy days: Calculate the weir crest overflow of the sewage collection tank according to the hydraulic weir crest overflow, and it should not be less than the design flow of the drainage system in rainy days (considered according to the full pipe flow). If it cannot be satisfied, the weir height or crest perimeter of the sewage collection tank (that is, the overflow side length of the weir crest of the sewage collection tank) can be adjusted until the design constraints are met.
所述的污水收集池沿进水方向的墙体上设置有孔口，孔口处设置可启闭闸门(如橡胶坝)，用于在特定情况下将污水收集池和雨水集水池连通；所述污水截流泵出口与外部的污水管网相连接，以输送旱天污水和初期雨水至污水处理厂；雨水泵出口连接雨水管至排放水体。The wall of the sewage collection tank along the water inlet direction is provided with an orifice, and an openable gate (such as a rubber dam) is provided at the orifice to connect the sewage collection tank and the rainwater collection tank under certain circumstances; The outlet of the above-mentioned sewage interception pump is connected to the external sewage pipe network to transport dry sewage and initial rainwater to the sewage treatment plant; the outlet of the rainwater pump is connected to the rainwater pipe to the discharge water body.
所述的雨水集水池中设有至少1台雨水泵及配套管道系统；有效容积和雨水泵配置能力按照室外排水设计规范(GB50014)执行。The rainwater collection tank is provided with at least one rainwater pump and supporting piping system; the effective volume and configuration capacity of the rainwater pump are implemented in accordance with the outdoor drainage design specification (GB50014).
在实际应用过程中，旱天时，排水管网收集的污水由合流或雨水进水管，经过进水渠和进水格栅，流入污水收集池，随着污水的流入，污水收集池内的水位随之上升，在水位到达污水收集池墙体标高前，自动或人工开启污水收集池中的1台污水截流泵，通过污水截流泵将污水收集池内的污水截流至污水管网，当污水收集池内水位下降至最低水位时，污水截流泵停止运行，周而往复。In practical application, in dry weather, the sewage collected by the drainage pipe network flows into the sewage collection tank through the confluence or rainwater inlet pipe, through the water inlet channel and the water inlet grille, and the water level in the sewage collection tank rises with the inflow of sewage , before the water level reaches the wall elevation of the sewage collection tank, automatically or manually turn on a sewage interception pump in the sewage collection tank, and intercept the sewage in the sewage collection tank to the sewage pipe network through the sewage interception pump, when the water level in the sewage collection tank drops to When the water level is the lowest, the sewage shut-off pump stops running and goes round and round.
雨天时，雨水通过汇流经雨水进水管、进水渠和进水格栅流入污水收集池，由于雨水量大，污水收集池内的水位快速上升，待其上升至预定的启动水位后，污水截流泵启动，将旱流污水和初期雨水截留至污水管网，当污水收集池的水位因雨水汇入而导致水位下降速度低于预定值时，预先安装在污水收集池内的其他备用污水截流泵可以根据实际情况同时或顺次开启，冲刷进污水收集池的初期雨水通过污水截流泵输送至污水管网，以此尽可能地将初期雨水输送至污水管网，保证雨天溢流放江水质。In rainy days, rainwater flows into the sewage collection tank through confluence through the rainwater inlet pipe, water inlet channel and water inlet grille. Due to the large amount of rainwater, the water level in the sewage collection tank rises rapidly. After it rises to the predetermined starting water level, the sewage interception pump starts , to intercept the dry sewage and initial rainwater to the sewage pipe network. When the water level of the sewage collection tank drops below the predetermined value due to the influx of rainwater, other standby sewage interception pumps pre-installed in the sewage collection tank can be used according to the actual situation. The conditions are opened at the same time or in sequence, and the initial rainwater washed into the sewage collection tank is transported to the sewage pipe network through the sewage interception pump, so as to transport the initial rainwater to the sewage pipe network as much as possible to ensure the water quality of the overflow in rainy days.
当降雨持续或降雨强度超过污水截流泵的输送能力时，此时，汇流的雨水通过污水收集池池壁顶端的堰顶溢流堰溢流进入雨水集水池内，雨水集水池内的水位随着溢流的雨水量增加而上升，当雨水集水池内的水位超过池内的雨水泵启动水位时，雨水泵启动将雨水排放至外界水体。When the rainfall continues or the rainfall intensity exceeds the delivery capacity of the sewage interception pump, at this time, the confluent rainwater overflows into the rainwater collection tank through the weir top overflow weir at the top of the sewage collection tank wall, and the water level in the rainwater collection tank increases with the The amount of overflowing rainwater increases and rises. When the water level in the rainwater collection tank exceeds the starting water level of the rainwater pump in the pool, the rainwater pump starts to discharge the rainwater to the external water body.
降雨后期，随着雨水汇流量减少，污水收集池的水位下降，雨水集水池的溢流结束，雨水泵继续将存积在雨水集水池内的雨水抽送至外界水体，直至水位下降至停泵水位后，雨水泵停止运行。而此时污水收集池内的水位也随着污水截流泵的持续运行，水位持续降低至污水截流泵停止运行。如此周而复始，通过排水系统的污水截流泵运行，将旱流污水和初期雨水输送至污水管网，通过雨水泵运行将后期相对干净的雨水排放至外界水体，实现排水系统旱天污水和初期雨水的污染物有效截流和防涝的双重目的。In the later stage of rainfall, as the rainwater confluence decreases, the water level of the sewage collection tank drops, and the overflow of the rainwater collection tank ends, and the rainwater pump continues to pump the rainwater stored in the rainwater collection tank to the outside water body until the water level drops to the pump stop water level After that, the rainwater pump stops running. And this moment, the water level in the sewage collection tank is also along with the continuous operation of the sewage shut-off pump, and the water level continues to decrease until the sewage shut-off pump stops running. Repeatedly, through the operation of the sewage interception pump of the drainage system, the dry sewage and initial rainwater are transported to the sewage pipe network, and the relatively clean rainwater in the later period is discharged to the external water body through the operation of the rainwater pump, so as to realize the dry sewage and initial rainwater in the drainage system. The dual purpose of effective interception of pollutants and waterlogging prevention.
为考虑防洪防涝的安全性，在污水收集池的侧壁处设置用于安装可启闭闸门的孔口，孔口可以是方形或圆形。孔口处安装有常闭的可手动或自动开启的闸板阀，也可以用其他形式的启闭装置(如橡胶坝)替代。在日常运行期间，该孔口处的可启闭闸门应处于常闭状态，以实现日常的污水截流和雨水外排功能；当大暴雨来临，可考虑预先或事中开启该孔口处的可启闭闸门，将污水收集池和雨水集水池连通，从而实现雨水快速外排，防止内涝。In order to consider the safety of flood control and waterlogging, the side wall of the sewage collection tank is provided with an orifice for installing a gate that can be opened and closed. The orifice can be square or circular. A normally closed gate valve that can be opened manually or automatically is installed at the orifice, and other forms of opening and closing devices (such as rubber dams) can also be used instead. During daily operation, the openable gate at the orifice should be in a normally closed state to realize the daily sewage interception and rainwater discharge functions; when heavy rain comes, it may be considered to open the openable gate at the orifice in advance or during the event Close the gate and connect the sewage collection tank with the rainwater collection tank, so as to realize the rapid drainage of rainwater and prevent waterlogging.
与现有技术相比，本发明具有以下特点：Compared with the prior art, the present invention has the following characteristics:
1)可实现将旱天污水和初期雨水截留在污水收集池内，使得雨污水中的沉积物不易沉积，提高了污水截流泵对旱天污水和初期雨水中污染物的截流效率，特别是对沉积物的截流效率；1) It can realize the interception of dry weather sewage and initial rainwater in the sewage collection tank, so that the sediment in the rainwater is not easy to deposit, and the interception efficiency of the sewage interception pump for the dry weather sewage and early rainwater pollutants is improved, especially for sedimentation interception efficiency;
2)可实现控制排水系统雨天溢流污染并保护受纳水体水环境与水生态；2) It can control the overflow pollution of the drainage system in rainy days and protect the water environment and water ecology of the receiving water body;
3)系统整体结构简单，模块化清晰，可用于新建排水泵站和现有排水泵站的改造设计，能显著提高排水泵站有效截污能力，降低雨天溢流污染风险，社会经济效益好，具有很好的应用前景。3) The overall structure of the system is simple, and the modularization is clear. It can be used in the design of newly built drainage pumping stations and the renovation of existing drainage pumping stations. It can significantly improve the effective interception capacity of drainage pumping stations, reduce the risk of overflow pollution in rainy days, and have good social and economic benefits. It has a good application prospect.
附图说明Description of drawings
图1为本发明整体结构平面示意图；Fig. 1 is a schematic plan view of the overall structure of the present invention;
图2为本发明剖面结构示意图；Fig. 2 is the cross-sectional structure schematic diagram of the present invention;
图中标记说明：Instructions for marks in the figure:
1—雨水进水管、2—进水闸板阀、3—进水渠、4—进水格栅、5—雨水集水池、6—污水收集池、7—污水截流泵、8—可启闭闸门、9—雨水泵。1—Rainwater inlet pipe, 2—Inlet gate valve, 3—Inlet channel, 4—Water inlet grille, 5—Rainwater collection tank, 6—Sewage collection tank, 7—Sewage interception pump, 8—Open and close gate, 9—Rainwater pump.
具体实施方式detailed description
下面结合附图和具体实施例对本发明进行详细说明。The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
实施例：Example:
如图1-2所示，本发明实施例的排水泵站集水池高效截污系统，包括雨水集水池5、开设在雨水集水池5一侧的雨水进水管1、设置在雨水集水池5中并依次与雨水进水管1相连通的进水渠3以及污水收集池6，进水渠3中设有进水格栅4，污水收集池6与雨水集水池5相互隔离设置，并通过可启闭闸门8与雨水集水池5相连通，并且污水收集池6中设有污水截流泵7，该污水截流泵7的出口通过污水管网连接至污水处理厂，雨水集水池5中设有雨水泵9，该雨水泵9的出口通过雨水管连接至外界水体。雨水进水管1与进水渠3相连通的位置处设有进水闸板阀2。As shown in Figures 1-2, the high-efficiency sewage interception system for the drainage pumping station sump of the embodiment of the present invention includes a rainwater sump 5, a rainwater inlet pipe 1 set on one side of the rainwater sump 5, and a rainwater sump 5. And the water inlet channel 3 and the sewage collection tank 6 which are connected with the rainwater inlet pipe 1 in turn, the water inlet grid 4 is arranged in the water inlet channel 3, the sewage collection tank 6 and the rainwater collection tank 5 are isolated from each other, and through the openable and closed gate 8 communicates with the rainwater collection tank 5, and the sewage collection tank 6 is provided with a sewage interception pump 7, the outlet of the sewage interception pump 7 is connected to the sewage treatment plant through the sewage pipe network, and the rainwater collection tank 5 is provided with a rainwater pump 9, The outlet of the rainwater pump 9 is connected to the external water body through the rainwater pipe. A water inlet gate valve 2 is provided at a position where the rainwater inlet pipe 1 communicates with the water inlet channel 3 .
其中，污水收集池6顶部敞口，池壁顶端为堰顶溢流堰。污水收集池6的池底设有向污水截流泵7倾斜的斜坡，该斜坡的坡度≥10％。污水截流泵7至少设有2台，污水收集池6的有效容积不低于出水量最大的一台污水截流泵7五分钟的出水量。污水收集池6中沿进水方向的侧壁上开设有用于安装可启闭闸门8的孔口，该孔口的底端标高与雨水集水池5的池底标高相同。孔口的截面积大于雨水进水管1管径的等效面积。可启闭闸门8选自手动闸板阀、自动闸板阀或橡胶坝。可启闭闸门8用于在特定情况下将污水收集池6和雨水集水池5连通。Wherein, the top of the sewage collection pool 6 is open, and the top of the pool wall is a weir top overflow weir. The bottom of the sewage collection tank 6 is provided with a slope inclined towards the sewage interception pump 7, and the slope of the slope is ≥ 10%. Sewage shut-off pump 7 is provided with 2 at least, and the effective volume of sewage collection pool 6 is not lower than the water yield of a sewage shut-off pump 7 five minutes of water yield maximum. On the side wall along the water inlet direction in the sewage collection tank 6, there is an opening for installing the openable and closing gate 8, and the bottom elevation of the opening is the same as the bottom elevation of the rainwater collection tank 5. The cross-sectional area of the orifice is greater than the equivalent area of the diameter of the rainwater inlet pipe 1 . The gate 8 that can be opened and closed is selected from a manual gate valve, an automatic gate valve or a rubber dam. The openable and closable gate 8 is used to connect the sewage collection tank 6 and the rainwater collection tank 5 under certain circumstances.
在实际设计过程中，雨水集水池5连接上游合流或雨水进水管1，而雨水进水管1的设计直径和坡度由服务区特性确定。雨水集水池5中沿水流方向依次为进水闸板阀2、用于拦截粗大杂质和漂浮物的进水渠3和进水格栅4、连接进水渠3的污水收集池6。In the actual design process, the rainwater collection tank 5 is connected to the upstream confluence or the rainwater inlet pipe 1, and the design diameter and slope of the rainwater inlet pipe 1 are determined by the characteristics of the service area. In the rainwater collection tank 5, along the water flow direction, there are water inlet gate valve 2, water inlet channel 3 and water inlet grille 4 for intercepting coarse impurities and floating objects, and sewage collection tank 6 connected to water inlet channel 3.
污水收集池6内有至少2台污水截流泵7及其配套管道系统，污水收集池6的有效容积按照不低于最大一台污水截流泵7五分钟的出水量设计，假定污水截流泵流量为0.3m3/s，则Vw≥Qw×T＝0.3×300＝90m3。污水收集池6的池壁标高按照(进水管顶标高-200mm堰顶水头)取值，由污水收集池6的计算容积确定周长。按照水力学堰顶溢流计算污水收集池6的堰顶溢流量，应不小于排水系统雨天设计流量(按满管流考虑)。若不能满足，可调整污水收集池6的堰高或堰顶周长(也即污水收集池6堰顶溢流的边长)。直至满足设计约束条件BH≥QY，可以得到H≥0.05，B≤20。排水泵站雨水集水池5，池内有至少1台雨水泵及配套管道系统，假定雨水泵流量为1.0m3/s；有效容积和雨水泵配置能力按照室外排水设计规范(GB50014)执行，即VY≥QY×T＝1×300＝300m3。There are at least two sewage shut-off pumps 7 and their supporting piping systems in the sewage collection tank 6. The effective volume of the sewage collection tank 6 is designed according to the water output of not less than the largest sewage shut-off pump 7 for five minutes, assuming that the sewage shut-off pump flow rate is 0.3m 3 /s, then V w ≥ Q w × T = 0.3 × 300 = 90m 3 . The wall elevation of the sewage collection tank 6 is taken according to (water inlet pipe top elevation-200mm weir crest water head), and the perimeter is determined by the calculated volume of the sewage collection tank 6. According to the hydraulic weir crest overflow calculation, the weir crest overflow flow of the sewage collection tank 6 should not be less than the design flow of the drainage system in rainy days (considered according to the full pipe flow). If not satisfied, the height of the weir of the sewage collection tank 6 or the perimeter of the crest of the weir (that is, the side length of the overflow of the weir crest of the sewage collection tank 6) can be adjusted. until the design constraints are met BH≥Q Y , H≥0.05, B≤20 can be obtained. Drainage pump station rainwater collection tank 5, there is at least one rainwater pump and supporting piping system in the pool, assuming that the flow rate of the rainwater pump is 1.0m 3 /s; the effective volume and configuration capacity of the rainwater pump are implemented in accordance with the outdoor drainage design specification (GB50014), that is, V Y ≥ Q Y × T = 1 × 300 = 300 m 3 .
本发明的实施例的泵站对雨污水截流截污的方法，主要步骤如下：The pumping station of the embodiment of the present invention intercepts the rainwater and sewage, and the main steps are as follows:
旱天，排水管网收集的污水由合流或雨水进水管1，经过进水渠3和进水格栅4，流入污水收集池6，随着污水的流入，污水收集池6内的水位随之上升，在水位到达污水收集池6墙体标高前，自动或人工开启污水收集池6内其中1台污水截流泵7，将污水收集池6内的污水截流至污水管网，当污水截流泵7抽送至污水收集池6内水位到达最低水位后，污水截流泵7停止运行，周而往复。In dry weather, the sewage collected by the drainage pipe network flows into the sewage collection tank 6 through the confluence or rainwater inlet pipe 1 through the water inlet channel 3 and the water intake grille 4. With the inflow of sewage, the water level in the sewage collection tank 6 rises accordingly Before the water level reaches the height of the wall of the sewage collection tank 6, one of the sewage interception pumps 7 in the sewage collection pool 6 is automatically or manually opened to intercept the sewage in the sewage collection pool 6 to the sewage pipe network. When the sewage interception pump 7 pumps After the water level in the sewage collection tank 6 reaches the minimum water level, the sewage shut-off pump 7 stops running and goes round and round.
雨天时，雨水通过汇流经进水管1、进水渠3和进水格栅4流入污水收集池6，由于雨水量大，污水收集池6内的水位快速上升，至预定的启动水位后污水截流泵7启动，将旱流污水和初期雨水截留至污水管网，当污水收集池6的水位因雨水汇入水位下降速度低于预定值时，预先安装在污水收集池6内的其他备用污水截流泵7也需要同时或顺次开启，冲刷进污水收集池6的初期雨水通过污水截流泵7输送至污水管网，以此尽可能地将初期雨水输送至污水管网，保证雨天溢流放江水质。In rainy days, the rainwater flows into the sewage collection tank 6 through the confluence through the water inlet pipe 1, the water inlet channel 3 and the water inlet grille 4. Due to the large amount of rainwater, the water level in the sewage collection tank 6 rises rapidly, and the sewage interception pump reaches the predetermined starting water level. 7 Start, intercept the dry sewage and initial rainwater to the sewage pipe network, when the water level of the sewage collection tank 6 drops below the predetermined value due to the inflow of rainwater, other standby sewage interception pumps pre-installed in the sewage collection tank 6 7 also needs to be opened at the same time or in sequence, and the initial rainwater flushed into the sewage collection tank 6 is transported to the sewage pipe network through the sewage interception pump 7, so that the initial rainwater is transported to the sewage pipe network as much as possible to ensure the water quality of the river overflowing in rainy days.
当降雨持续或降雨强度超过污水截流泵7的输送能力时，此时汇流的雨水通过污水收集池6侧壁上部的溢流堰溢流进入雨水集水池5内，雨水集水池5内水位随着溢流的雨水量增加而上升，当雨水集水池5内的水位超过池内的雨水泵9启动水位时，雨水泵9启动将雨水排放至外界水体。降雨后期，随着雨水汇流量减少，污水收集池6的水位下降，雨水集水池5的溢流结束，雨水泵9继续将存积在雨水集水池5内的雨水抽送至外界水体，直至水位下降至停泵水位后，雨水泵9停止运行。而此时污水收集池6内的水位也随着污水截流泵7的持续运行，水位持续降低至污水截流泵7停止运行。如此周而复始，通过排水系统的污水截流泵7运行，将旱流污水和初期雨水输送至污水管网，通过雨水泵9运行将后期相对干净的雨水排放至水体，实现排水系统旱天污水和初期雨水的污染物有效截流和防涝的双重目的。When the rainfall continues or the rainfall intensity exceeds the conveying capacity of the sewage interception pump 7, the rainwater that converges now overflows into the rainwater collection tank 5 through the overflow weir on the upper part of the side wall of the sewage collection tank 6, and the water level in the rainwater storage tank 5 increases with the The amount of overflowing rainwater increases and rises. When the water level in the rainwater collection tank 5 exceeds the starting water level of the rainwater pump 9 in the pool, the rainwater pump 9 starts to discharge the rainwater to the external water body. In the later period of rainfall, as the rainwater confluence decreases, the water level of the sewage collection tank 6 drops, and the overflow of the rainwater collection tank 5 ends, and the rainwater pump 9 continues to pump the rainwater stored in the rainwater collection tank 5 to the external water body until the water level drops After the water level to stop the pump, the rainwater pump 9 stops running. And this moment, the water level in the sewage collection tank 6 is also along with the continuous operation of the sewage shut-off pump 7, and the water level continues to decrease until the sewage shut-off pump 7 stops running. Repeatedly, through the operation of the sewage interception pump 7 of the drainage system, the dry sewage and initial rainwater are transported to the sewage pipe network, and the relatively clean rainwater in the later period is discharged to the water body through the operation of the rainwater pump 9, so as to realize the dry sewage and initial rainwater in the drainage system. The dual purposes of effective interception of pollutants and waterlogging prevention.
上述的对实施例的描述是为便于该技术领域的普通技术人员能理解和使用发明。熟悉本领域技术的人员显然可以容易地对这些实施例做出各种修改，并把在此说明的一般原理应用到其他实施例中而不必经过创造性的劳动。因此，本发明不限于上述实施例，本领域技术人员根据本发明的揭示，不脱离本发明范畴所做出的改进和修改都应该在本发明的保护范围之内。The above descriptions of the embodiments are for those of ordinary skill in the art to understand and use the invention. It is obvious that those skilled in the art can easily make various modifications to these embodiments, and apply the general principles described here to other embodiments without creative effort. Therefore, the present invention is not limited to the above-mentioned embodiments. Improvements and modifications made by those skilled in the art according to the disclosure of the present invention without departing from the scope of the present invention should fall within the protection scope of the present invention.
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| CN113550272A (en) * | 2021-07-28 | 2021-10-26 | 广东省水利电力勘测设计研究院有限公司 | Coastal city drainage waterlogging prevention integrated gate station |
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Application publication date: 20170315 |
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