JP2006161554A

JP2006161554A - Water level control device for drainage device

Info

Publication number: JP2006161554A
Application number: JP2005371600A
Authority: JP
Inventors: Ikuo Uemura; 育雄植村; Hiroshi Ishiwada; 浩史石和田; Masakazu Banba; 将一番場; Fumi Uchino; 文内野; Tsuneo Ochiai; 恒男落合; Hiroshi Komatsu; 寛小松; Shigeki Nishimura; 茂樹西村; Shigeru Tsukada; 繁塚田
Original assignee: Tokyo Metropolitan Sewerage Service Corp; Tokyo Metropolitan Government; Nippon Koei Co Ltd
Current assignee: Tokyo Metropolitan Sewerage Service Corp; Tokyo Metropolitan Government; Nippon Koei Co Ltd
Priority date: 2005-12-26
Filing date: 2005-12-26
Publication date: 2006-06-22

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem in a dividing manhole of a conventional combined sewerage wherein inflow floating impurities flow out to a public water area when the water level exceeds the height of a division weir in rainy weather, which is one of causes of water pollution in the public water area. <P>SOLUTION: This water surface control device for a drainage device has an inflow pipe, a discharge pipe, an intercepting pipe, and the division weir arranged to shut off the intercepting pipe and inflow pipe from the discharge pipe. A guide wall interposed between the inflow pipe and the division weir is provided, and the lower end of the guide wall is located below the top end of the division weir, while the upper end is located above the top end of the division weir. The upper end of the guide wall can be located above the top of the intercepting pipe. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は排水装置用水面制御装置、特に、雨水と汚水を合流して排水処理するための排水装置において汚水と雨水とを分水する雨水吐き室（分水人孔）内の水面を制御する制御装置に関するものである。 The present invention controls a water surface in a rainwater discharge chamber (a diversion manhole) that divides sewage and rainwater in a drainage device for effluent treatment by merging rainwater and sewage with a drainage device. The present invention relates to a control device.

図４及び図５は従来の合流式下水道分水人孔の平面図、図６Ａ及び図６Ｂは図４の合流式下水道の分水人孔の晴天時の状態を示し、１は分水堰、２は流入管、３は遮集管、４は放流管、５は流入する浮遊性の夾雑物である。図７Ａ，図７Ｂ，図８Ａ及び図８Ｂは雨天時の状態である。 4 and 5 are plan views of the conventional confluence sewer diversion manhole, FIGS. 6A and 6B show the state of the diversion manhole of the confluence sewer in FIG. 4 when the sky is clear, 1 is a diversion weir, 2 is an inflow pipe, 3 is a blocking pipe, 4 is a discharge pipe, and 5 is a floating contaminant that flows in. 7A, 7B, 8A and 8B are in a rainy state.

従来の分水人孔においては、晴天時は図６Ａ，図６Ｂのように流入管２から夾雑物５を含んだ汚水が遮集管３へ全量流れ込み、下水処理場、ポンプ場へ流下する。また、雨天時は図７Ａ，図７Ｂのように汚水と共に雨水も分水人孔内へ流入し、一定量以上の水量になると図８Ａ，図８Ｂに示すように流入管２と放流管４間に介挿した分水堰１を越流し、夾雑物５を含んだ汚水の一部も放流管４を通じて公共用水域へと流出する。 In the conventional diversion manhole, in fine weather, as shown in FIGS. 6A and 6B, the entire amount of sewage containing the contaminants 5 flows from the inflow pipe 2 into the interception pipe 3, and then flows down to the sewage treatment plant and the pump station. 7A and 7B, rainwater also flows into the diversion manhole as shown in FIGS. 7A and 7B, and when the amount of water exceeds a certain level, between the inflow pipe 2 and the discharge pipe 4 as shown in FIGS. 8A and 8B. A part of the sewage containing the contaminants 5 flows out to the public water area through the discharge pipe 4.

上記のように、従来の分水人孔では、流入する浮遊性の夾雑物５が雨天時に遮集管３へ流入せず放流管４を介して公共用水域へ流出し、公共用水域の水質汚濁の原因のひとつとなっている。この要因の１つには、従来の分水人孔における雨天時の水理特性が挙げられる。従来の分水人孔では図６Ａ，図６Ｂのように晴天時は流入管２から遮集管３に向かって水面勾配が形成されるため、浮遊性夾雑物５は流れに乗って遮集管３へ全量流れ込む。しかし、雨天時においては図７Ａ，図７Ｂのように、晴天時のような流入管２から遮集管３へ向かう水面勾配は形成されない。この状態においては浮遊性夾雑物５は遮集管３へ流入せず、分水人孔内に滞留する。さらに分水人孔への流入水量が増加し分水人孔内水深が分水堰１の高さを上回るようになると、図８Ａ，図８Ｂのように分水堰１を越流することで、流入管２から放流管４へ向かう水面勾配が形成される。この時浮遊性夾雑物５は流れに乗って放流管４を通じて公共用水域へほぼ全量流出する。 As described above, in the conventional diversion manhole, the floating contaminants 5 that flow in do not flow into the intercepting pipe 3 in the rain, but flow into the public water area through the discharge pipe 4, and the water quality of the public water area It is one of the causes of pollution. One of the factors is the hydraulic characteristics at the time of rain in a conventional diversion manhole. In a conventional diversion manhole, as shown in FIGS. 6A and 6B, a water surface gradient is formed from the inflow pipe 2 to the interception pipe 3 in fine weather, so that the floating contaminants 5 get on the flow and become the interception pipe. The whole amount flows into 3. However, during rainy weather, a water surface gradient from the inflow pipe 2 to the shielding pipe 3 as in clear weather is not formed as shown in FIGS. 7A and 7B. In this state, the floating contaminants 5 do not flow into the shielding pipe 3 and stay in the water diversion manhole. Further, when the amount of water flowing into the diversion manhole increases and the water depth in the diversion manhole exceeds the height of the diversion weir 1, it overflows the diversion weir 1 as shown in FIGS. 8A and 8B. A water surface gradient from the inflow pipe 2 to the discharge pipe 4 is formed. At this time, the floating contaminants 5 get on the flow and almost all flow out to the public water area through the discharge pipe 4.

このような課題を解決するための手段としては、浮遊性の夾雑物５が遮集管３へ流入し易い流れを分水人孔内で発生させる必要があり、従来の分水人孔を改良し、浮遊性夾雑物の公共用水域への流出削減を行う必要がある。 As a means for solving such a problem, it is necessary to generate a flow in which the floating contaminant 5 easily flows into the intercepting pipe 3 in the diversion manhole, and the conventional diversion manhole is improved. However, it is necessary to reduce the outflow of floating contaminants to public water bodies.

本発明の排水装置用水面制御装置は、流入管と、放流管と、遮集管と、上記遮集管と流入管を上記放流管から遮断するように配置した分水堰とを有する排水装置用水面制御装置であって、上記流入管と上記分水堰との間に介挿せしめたガイドウォールを有し、上記ガイドウォールの下端が上記分水堰の天端より下方に位置され、上端が上記分水堰の天端より上方に位置されていることを特徴とする。 A water surface control device for a drainage device according to the present invention includes a drainage device having an inflow pipe, a discharge pipe, a interception pipe, and a diversion weir arranged so as to block the interception pipe and the inflow pipe from the discharge pipe. A water surface control device, comprising a guide wall interposed between the inflow pipe and the diversion weir, wherein the lower end of the guide wall is located below the top end of the diversion weir, and the upper end Is located above the top of the diversion weir.

また、本発明の排水装置用水面制御装置は、流入管と、放流管と、遮集管と、上記遮集管と流入管を上記放流管から遮断するように配置した分水堰とを有する排水装置用水面制御装置であって、上記流入管と上記分水堰との間に介挿せしめたガイドウォールを有し、上記ガイドウォールの下端が上記分水堰の天端より下方に位置され、上端が上記遮集管管頂より上方に位置されていることを特徴とする。 Moreover, the water surface control device for a drainage device of the present invention has an inflow pipe, a discharge pipe, a interception pipe, and a diversion weir arranged so as to block the interception pipe and the inflow pipe from the discharge pipe. A water surface control device for a drainage device, comprising a guide wall interposed between the inflow pipe and the diversion weir, the lower end of the guide wall being positioned below the top end of the diversion weir The upper end is located above the top of the shielding tube.

本発明の排水装置用水面制御装置によれば、浮遊性の夾雑物５のほぼ全量を遮集管３内に流入させ、雨水時における浮遊性夾雑物５の公共用水域への流出削減を行うことができるようになる大きな利益がある。 According to the water surface control device for a drainage device of the present invention, almost all of the floating contaminants 5 are caused to flow into the intercepting pipe 3 to reduce outflow of the floating contaminants 5 to the public water area during rainwater. There is a big benefit that you will be able to.

以下図面によって本発明の実施例を説明する。 Embodiments of the present invention will be described below with reference to the drawings.

本発明においては図１〜図３に示すように上記分水堰１の天端から下方の位置にその下端を配置せしめ、その上端を上記分水堰１の天端より上方位置ならしめた垂直ガイドウォール７を上記流入管２と分水堰１間に介挿せしめる。 In the present invention, as shown in FIGS. 1 to 3, the lower end is disposed at a position below the top end of the diversion weir 1, and the upper end is positioned above the top end of the diversion weir 1. A guide wall 7 is inserted between the inflow pipe 2 and the diversion weir 1.

本発明の他の実施例においては上記垂直ガイドウォール７の上端を上記分水堰１の天端及び上記遮集管３の管頂より上方位置ならしめる。 In another embodiment of the present invention, the upper end of the vertical guide wall 7 is positioned above the top end of the diversion weir 1 and the top of the shielding pipe 3.

上記実施例によれば、雨天時において分水人孔水深が分水堰１の高さを上回るような場合においては、図３に示すように流入管２から遮集管３へ向かう水面勾配は形成されるが、流入管２から分水堰１へ向かう水面勾配は形成されないようになる。即ち、浮遊性夾雑物５のほぼ全量が表面流に乗って遮集管３へ流入するため上記従来の欠点を一掃できるようになる。 According to the above embodiment, when the water diversion depth exceeds the height of the diversion weir 1 in rainy weather, the water surface gradient from the inflow pipe 2 to the interception pipe 3 is as shown in FIG. Although formed, a water surface gradient from the inflow pipe 2 toward the diversion weir 1 is not formed. That is, almost the entire amount of the floating contaminants 5 rides on the surface flow and flows into the shielding tube 3, so that the above-mentioned conventional defects can be eliminated.

なお、本発明は図５その他に示すような従来の他の合流式下水道分水人孔に対しても同様に適用できる。 The present invention can be similarly applied to other conventional merging sewer diversion manholes as shown in FIG.

本発明の排水装置用水面制御装置を用いた合流式下水道分水人孔の平面図である。It is a top view of a combined sewer diversion manhole using the water surface control device for drainage of the present invention. 図１に示す本発明の合流式下水道分水人孔の晴天時のＡ−Ａ線断面図である。It is the sectional view on the AA line at the time of the fine weather of the confluence | merging type sewer diversion manhole of this invention shown in FIG. 図１に示す本発明の合流式下水道分水人孔の雨天時のＢ−Ｂ線断面図である。It is a BB line sectional view at the time of rain of the combined sewer diversion manhole of the present invention shown in FIG. 従来の合流式下水道分水人孔の平面図である。It is a top view of the conventional merge type sewer diversion manhole. 従来の他の合流式下水道分水人孔の平面図である。It is a top view of the other conventional confluence | merging type sewer diversion manhole. 図４に示す従来の合流式下水道分水人孔の晴天時のＡ−Ａ線断面図である。It is the sectional view on the AA line at the time of the fine weather of the conventional confluence | merging type sewer diversion manhole shown in FIG. 図４に示す従来の合流式下水道分水人孔の晴天時のＢ−Ｂ線断面図である。It is the BB sectional view taken on the line of the conventional confluence | merging type sewer water diversion person hole shown in FIG. 4 at the time of fine weather. 図４に示す従来の合流式下水道分水人孔の雨天時のＡ−Ａ線断面図である。It is the sectional view on the AA line at the time of rain of the conventional confluence | merging type sewer diversion manhole shown in FIG. 図４に示す従来の合流式下水道分水人孔の雨天時のＢ−Ｂ線断面図である。FIG. 5 is a cross-sectional view of the conventional combined sewer diversion manhole shown in FIG. 水量が更に増大した場合の図４に示す従来の合流式下水道分水人孔の雨天時のＡ−Ａ線断面図である。It is the sectional view on the AA line at the time of rain of the conventional merging sewer diversion manhole shown in FIG. 4 when the amount of water increases further. 水量が更に増大した場合の図４に示す従来の合流式下水道分水人孔の雨天時のＢ−Ｂ線断面図である。FIG. 5 is a cross-sectional view taken along the line B-B of the conventional combined sewer diversion manhole shown in FIG. 4 when the amount of water further increases during rainy weather.

Explanation of symbols

１分水堰
２流入管
３遮集管
４放流管
５夾雑物
７ガイドウォール 1 diversion weir 2 inflow pipe 3 interception pipe 4 discharge pipe 5 foreign matter 7 guide wall

Claims

A water surface control device for a drainage device, comprising: an inflow pipe; a discharge pipe; a interception pipe; and a diversion weir arranged so as to block the interception pipe and the inflow pipe from the discharge pipe. And a guide wall interposed between the diversion weir, the lower end of the guide wall is located below the top end of the diversion weir, and the upper end is above the top end of the diversion weir. A water surface control device for a drainage device, characterized by being positioned.

A water surface control device for a drainage device, comprising: an inflow pipe; a discharge pipe; a interception pipe; and a diversion weir arranged so as to block the interception pipe and the inflow pipe from the discharge pipe. And a guide wall interposed between the diversion weir, the lower end of the guide wall is located below the top end of the diversion weir, and the upper end is located above the top of the interceptor tube A water surface control device for a drainage device.