JP4758743B2

JP4758743B2 - Equipment for separating and removing solids in liquid

Info

Publication number: JP4758743B2
Application number: JP2005351730A
Authority: JP
Inventors: 恒樹由田
Original assignee: Sanki Engineering Co Ltd
Current assignee: Sanki Engineering Co Ltd
Priority date: 2005-12-06
Filing date: 2005-12-06
Publication date: 2011-08-31
Anticipated expiration: 2025-12-06
Also published as: JP2007152243A

Description

この発明は、排液中の固形分分離除去装置の技術分野に属する。更に詳細には、汚泥処理装置の脱水機や濃縮機等から排出される排液中に含まれる固形分を分離して、除去する処理装置の技術分野に属する。 The present invention belongs to the technical field of a device for separating and removing solid content in drainage. More specifically, the present invention belongs to the technical field of a processing apparatus that separates and removes solids contained in the drainage discharged from a dehydrator or a concentrator of a sludge processing apparatus.

下水処理や産業排水処理等から発生する汚泥は、後段の処理・処分におけるコスト低減や処理効率の向上を図るため、汚泥の濃縮処理や脱水処理が行われてきた。濃縮や脱水に使用される従来の濃縮装置や脱水装置において、分離液側に処理固形物量の５％〜１０％の固形物が含まれており、従来はそれをそのまま水処理系へ返流していた。しかし、近年、固形物の回収率を９８％〜９５％程度に高め、返流水の水質を向上させて水処理系への負荷を低減することが求められている。このために、その分離液からさらに固液分離処理する装置を濃縮装置または脱水機に組み込んだ装置が開発されつつある。 Sludge generated from sewage treatment, industrial wastewater treatment, etc. has been subjected to sludge concentration treatment and dewatering treatment in order to reduce costs and improve treatment efficiency in subsequent treatment and disposal. In conventional concentrators and dehydrators used for concentration and dehydration, solids containing 5% to 10% of the amount of solids to be treated are contained on the separation liquid side. It was. However, in recent years, it has been required to increase the solids recovery rate to about 98% to 95%, improve the quality of the return water, and reduce the load on the water treatment system. For this reason, an apparatus in which an apparatus for further performing a solid-liquid separation process from the separated liquid is incorporated into a concentrator or a dehydrator is being developed.

このような装置は一般に本体装置の付属装置として開発される。従来から公開されてきた特許文献にはこのような装置が見当たらない。従って、ここでは非特許文献１に記載されている汚泥処理装置の付属装置として技術マニュアルに掲載されている従来装置（以下、従来装置１という。）について説明する。しかし、技術マニュアルには機能の詳細な説明はなされていないので、一部説明を補充して簡単に説明する。図７はこのろ液分離装置の関連するシステムを示し、図８及び図９はこの装置の正面図及び平面図を示す。図９（Ｂ）は図９（Ａ）のＸ矢視の断面図を示す。
汚泥処理装置、圧入式スクリュープレス脱水機、技術マニュアル、２００１年−３月号、（財）下水道新技術推進機構 Such a device is generally developed as an accessory device of the main device. Such a device is not found in the patent documents that have been publicly disclosed. Therefore, here, a conventional device (hereinafter referred to as the conventional device 1) described in the technical manual as an accessory device of the sludge treatment device described in Non-Patent Document 1 will be described. However, since the technical manual does not provide detailed descriptions of the functions, some explanations will be supplemented and briefly described. FIG. 7 shows the relevant system of the filtrate separator, and FIGS. 8 and 9 show a front view and a plan view of the apparatus. FIG. 9B is a cross-sectional view taken along arrow X in FIG.
Sludge treatment equipment, press-fit screw press dehydrator, technical manual, 2001-March issue, Sewerage New Technology Promotion Organization

図７において、５０は圧入式スクリュ−プレス脱水機で、５１は凝集装置である。５２は洗浄水タンクで、５３はポンプである。脱水機５０によって脱水された脱水ケーキはシュート５０ａによってベルトコンベア５４に搭載され、脱水ケーキ貯留ホッパ５５に放出される。５６はろ液分離装置で、ろ液はホッパ５０ｂからろ液分離装置５６に供給される。ろ液分離装置５６に供給されたろ液は固形分が除去され、固形汚泥は汚泥貯留タンクに返送され、清澄水は水処理施設に供給される。 In FIG. 7, 50 is a press-fitting type screw press dehydrator, and 51 is an aggregating device. 52 is a washing water tank and 53 is a pump. The dehydrated cake dehydrated by the dehydrator 50 is mounted on the belt conveyor 54 by the chute 50a and discharged to the dehydrated cake storage hopper 55. 56 is a filtrate separator, and the filtrate is supplied to the filtrate separator 56 from the hopper 50b. Solids are removed from the filtrate supplied to the filtrate separator 56, the solid sludge is returned to the sludge storage tank, and the clarified water is supplied to the water treatment facility.

図８、図９（Ａ）、（Ｂ）において、６０はろ液分離槽で、６１は分離汚泥槽である。６２はろ液を供給するための流入管６２で、６３は洗浄水を供給する洗浄管６３である。また、６４はろ液分離槽掻寄板で、ろ液分離槽６０の底に沈降した固形物を掻き寄せる。６５は掻寄ブレードで浮上した固形物を掻き寄せて溢出する流水と一緒に分離汚泥槽６１に流出させる。ろ液分離槽６０の上部には掻寄ブレード６５によって、掻き寄せられた浮上固形物を分離汚泥槽６１に供給するホッパ状のシュート６８が設けられている。 In FIG. 8, FIG. 9 (A), (B), 60 is a filtrate separation tank, 61 is a separation sludge tank. 62 is an inflow pipe 62 for supplying filtrate, and 63 is a cleaning pipe 63 for supplying cleaning water. Reference numeral 64 denotes a filtrate separation tank scraping plate, which scrapes solids that have settled to the bottom of the filtrate separation tank 60. 65 spills the solid matter floating with the scraping blade to the separated sludge tank 61 together with the flowing water overflowing. A hopper-like chute 68 is provided at the upper part of the filtrate separation tank 60 for supplying the floating solid matter scraped by the scraping blade 65 to the separation sludge tank 61.

分離汚泥槽６１の一部（図９の上側部）が仕切り板６９によって小室７０が形成され、図９（Ｂ）に示すように、ろ液分離槽６０と小室７０との間には連通路７１が液面からの中間液レベルに設けられている。小室７０の中央に清澄水管７３が設けられている。分離汚泥槽６１には更に攪拌装置７５と液位計７６が設けられている。また、開閉弁（分離汚泥引抜弁）７７を介して、ろ液分離槽６０の底部と分離汚泥槽６１の底部を連通する連通パイプ７８が設けられると共に開閉弁（分離混合汚泥引抜弁）７９を介して分離汚泥槽６１の底部と汚泥貯留タンク８（図７）とを結ぶ管路８０が設けられている。 A small chamber 70 is formed by a partition plate 69 in a part of the separation sludge tank 61 (upper part in FIG. 9), and a communication path is provided between the filtrate separation tank 60 and the small chamber 70 as shown in FIG. 9B. 71 is provided at the intermediate liquid level from the liquid surface. A clear water pipe 73 is provided in the center of the small chamber 70. The separation sludge tank 61 is further provided with a stirring device 75 and a liquid level gauge 76. In addition, a communication pipe 78 is provided for communicating the bottom of the filtrate separation tank 60 and the bottom of the separation sludge tank 61 via an on-off valve (separated sludge extraction valve) 77, and an on-off valve (separated mixed sludge extraction valve) 79 is provided. A conduit 80 is provided between the bottom of the separated sludge tank 61 and the sludge storage tank 8 (FIG. 7).

従来装置１は、以上に述べたように、脱水機５０の運転中は駆動機６７を常時運転し、沈降分離した固形物を掻寄機の下部ブレード６４によって、ろ液分離槽６０の下部円錐中央に掻き寄せておき、分離汚泥引抜弁７７を開いて分離汚泥槽６１に移動する。また、浮上分離した固形物を掻寄機のブレード６５によって掻き寄せ、分離汚泥槽６１の上部に張り出したシュート６８から分離汚泥槽６１に放出する。従って、掻寄ブレード６４及び掻寄ブレード６５を駆動するための動力機が必要となる。ブレード６４及びブレード６５や駆動機構によって装置が複雑となり、大型化し、重量も重くなる。従って、装置自体の他にランニングコストも高価になるという問題が生じる。更に、磨耗部品が多いために、故障が起こりやすく信頼性に欠けるという問題も生じる。 As described above, the conventional apparatus 1 always operates the drive unit 67 while the dehydrator 50 is in operation, and the lower solids of the filtrate separation tank 60 are obtained by the lower blade 64 of the scraping machine. Then, the separated sludge extraction valve 77 is opened and moved to the separated sludge tank 61. Further, the solid matter that has floated and separated is scraped by the blade 65 of the scraper, and is discharged from the chute 68 protruding to the upper part of the separated sludge tank 61 to the separated sludge tank 61. Therefore, a power machine for driving the scraping blade 64 and the scraping blade 65 is required. The blade 64, the blade 65, and the drive mechanism complicate the device, increase the size, and increase the weight. Therefore, there arises a problem that the running cost becomes expensive in addition to the device itself. Furthermore, since there are many worn parts, there is a problem that failure is likely to occur and reliability is lacking.

以上に説明したように、本願発明は、可動部品をできるだけ少なくして信頼性が向上させると共に、固形分を自然分離させることで装置の単純化及び小型化を図り、安価で信頼性の高い装置を提供することを課題としている。 As described above, the present invention improves the reliability by reducing the number of moving parts as much as possible, and simplifies and downsizes the apparatus by separating the solid content naturally, thereby reducing the cost and reliability of the apparatus. It is an issue to provide.

上記課題を解決するために本発明は以下の手段を採用している。即ち、
請求項１記載の発明は、汚泥処理装置の脱水機や濃縮機等から排出される排液中に含まれる固形分を分離して除去する分離除去装置において、該排液中含まれる浮上固形分、沈降固形分と液分とを自然分離する分離槽と、該分離槽の液中に該排液の流出口を有する排液供給パイプと、浮上固形分を集めるガイド溝と、固形分を貯留する貯留槽と、該ガイド溝と該貯留槽との連通路に設けた第２開閉弁と、該貯留槽の液面レベルを計測する液面計と、該分離槽の中間液位レベルで連通する連通孔を有する清澄水分離槽と、該清澄水分離槽内に取水口を有する清澄水管と、該分離槽の底部と該貯留槽の底部との連通路に設けた第１開閉弁と、該貯留槽の底部と外部の適宜の位置に配置された外部装置とを連通する連通路に設けた第３開閉弁と、前記各開閉弁を制御する制御装置とを具備したことを特徴としている。
In order to solve the above problems, the present invention employs the following means. That is,
The invention according to claim 1 is a separation / removal device that separates and removes solids contained in the drainage discharged from a dehydrator, a concentrator, etc. of the sludge treatment apparatus, and the floating solids contained in the drainage. , A separation tank that naturally separates the settled solid content from the liquid content, a drainage supply pipe having an outlet for the drainage in the liquid of the separation tank, a guide groove for collecting the floating solid content, and a solid content storage A storage tank, a second on-off valve provided in a communication path between the guide groove and the storage tank, a liquid level gauge for measuring a liquid level of the storage tank, and an intermediate liquid level of the separation tank. A clarified water separation tank having a communicating hole, a clarified water pipe having a water intake in the clarified water separation tank, a first on-off valve provided in a communication path between the bottom of the separation tank and the bottom of the storage tank, A third on-off valve provided in a communication path communicating the bottom of the storage tank and an external device disposed at an appropriate external position; It is characterized by comprising a control device for controlling the valves.

請求項２に記載の発明は、請求項１に記載の発明において、前記液面計は前記貯留槽内の液面レベルの高レベル、中レベル、低レベルを検出し、
前記制御装置は、
前記分離除去装置が運転中で、前記貯留槽の液面レベルが低レベル又は中レベルにあるときは前記第２開閉弁を一定時間ごとに開閉して前記浮上固形分を前記貯留槽へ放出して、前記第２開閉弁を閉止した後第１開閉弁を所定時間開いて、分離槽の底に沈降した固形分を水位ヘッド差により貯留槽中に流入させ、
前記貯留槽の液面レベルが中レベル以上になったときに前記貯留槽の攪拌機を回転させて前記浮上固形分と前記沈降固形分を混合し、
前記貯留槽の液面レベルが高レベルになったときに第３開閉弁を開いて前記混合固形分を外部装置に送出するように制御する
ことを特徴としている。
The invention according to claim 2 is the invention according to claim 1, wherein the liquid level gauge detects a high level, a medium level, and a low level of the liquid level in the storage tank,
The controller is
When the separation and removal device is in operation and the liquid level of the storage tank is at a low level or an intermediate level, the second on-off valve is opened and closed at regular intervals to release the floating solids to the storage tank. The first on-off valve is opened for a predetermined time after the second on-off valve is closed, and the solid content settled on the bottom of the separation tank is caused to flow into the storage tank due to the difference in water level head,
When the liquid level of the storage tank is equal to or higher than the medium level, the stirrer of the storage tank is rotated to mix the floating solids and the precipitated solids,
A control is performed such that when the liquid level of the storage tank reaches a high level, a third on-off valve is opened to deliver the mixed solid content to an external device .

請求項３記載の発明は、請求項１又は請求項２記載の発明において、前記分離槽の液面上方に散水装置を設けたことを特徴としている。 A third aspect of the invention is characterized in that, in the first or second aspect of the invention, a watering device is provided above the liquid level of the separation tank.

本発明では掻寄板や掻寄ブレード等の回転部材及び駆動装置をなくしたので故障が起こりにくく、耐久性が向上するという効果が得られる。更に、固形分の浮上又は沈降が重力により行われるので、静かで円滑な分離が可能になると共に装置のコンパクト化、低価格化が可能になるという効果が得られる。 In the present invention, since the rotating members such as the scraping plate and the scraping blade and the driving device are eliminated, it is difficult to cause a failure and the durability is improved. Further, since the solid content is floated or settled by gravity, it is possible to achieve an effect that quiet and smooth separation is possible and that the apparatus can be made compact and inexpensive.

本願発明を実施した実施形態について以下に図を参照して説明する。なお、この実施形態は脱水機５０の排液（ろ液）中の固形分を分離除去する分離除去装置で（以下、ろ液分離装置と呼ぶ）、脱水機の下流側に設けた実施例である。図１は本実施形態の正面図で、図２は上平面図である。図３はコントローラの手順を示すフローチャートである。図４はタイムチャートである。図５、図６の（Ａ）〜（Ｄ）は各工程の状態を示した図である。なお、図において、引用番号は従来装置（図７〜図９）と相違する部分も多いので対応していない。 Embodiments of the present invention will be described below with reference to the drawings. This embodiment is a separation and removal device that separates and removes solids in the drainage (filtrate) of the dehydrator 50 (hereinafter referred to as a filtrate separation device), and is an example provided on the downstream side of the dehydrator. is there. FIG. 1 is a front view of the present embodiment, and FIG. 2 is an upper plan view. FIG. 3 is a flowchart showing the procedure of the controller. FIG. 4 is a time chart. FIGS. 5A to 6D are diagrams showing the states of the respective steps. In the figure, the reference numbers do not correspond because there are many parts different from the conventional apparatus (FIGS. 7 to 9).

図１、図２において、ろ液分離装置１０は脱水機５０の下側に設けている。ろ液分離装置１０は、固形分と液分を分離するためのろ液分離槽１１、固形分を貯留する貯留槽１２、清澄水を取り出すための清澄水分離槽１３から構成され、ろ液分離槽１１を挟んで両側に貯留槽１２、清澄水分離槽１３が設けられている。なお、貯留槽１２は分離した固形分をポンプにより原液貯留タンクに戻す場合に必要であるが、原液貯留タンクが下方にあり、自然流れによって戻せる場合は省略できる。ろ液分離槽１１の満液レベルの半分の高さより少し高いレベルに、ろ液が水平に流出するようにろ液供給管１５が側壁を貫通して固設されている。これにより供給水の動圧による浮上固形分や沈殿固形分の攪拌を防ぐことが望ましい。また、ろ液分離槽１１の液面上方の上流側に散水管１７を設け、固形分と共に浮上した気泡を消滅させて、気泡による液表面近くの攪拌効果や液面での気泡破裂による波紋発生を防ぎ液面を平らにして浮上固形分の液中への分散を防ぐことが望ましい。 1 and 2, the filtrate separator 10 is provided below the dehydrator 50. The filtrate separation device 10 includes a filtrate separation tank 11 for separating solids and liquids, a storage tank 12 for storing solids, and a clarified water separation tank 13 for taking out clarified water. A storage tank 12 and a clarified water separation tank 13 are provided on both sides of the tank 11. The storage tank 12 is necessary when the separated solid content is returned to the stock solution storage tank by a pump, but can be omitted if the stock solution storage tank is located below and can be returned by natural flow. A filtrate supply pipe 15 is fixed through the side wall so that the filtrate flows horizontally to a level slightly higher than half the full liquid level of the filtrate separation tank 11. Thus, it is desirable to prevent stirring of floating solids and precipitated solids due to the dynamic pressure of the feed water. In addition, a water spray tube 17 is provided on the upstream side above the liquid surface of the filtrate separation tank 11 to eliminate bubbles that have floated together with the solid content, thereby generating ripples due to the agitation effect near the liquid surface by the air bubbles and bubble burst on the liquid surface. It is desirable to prevent the dispersion of floating solids in the liquid by flattening the liquid surface.

貯留槽１２のろ液分離槽１１と隣接する側（下流側）に、浮上した軽固形分を円滑に貯留槽１２に放出するためのガイド溝１９が貯留槽１２の上部に設けられている。ガイド溝１９と貯留槽１２は第２開閉弁２０を介して管路２１、２１により連結されている。また、貯留槽１２には貯留した固形分を攪拌するための攪拌機２２が設けられると共に貯留槽内の液レベル１２ａを計測するための液面計２３が設けられている。液面計２３は従来から知られたものでよい。 On the side of the storage tank 12 adjacent to the filtrate separation tank 11 (downstream side), a guide groove 19 for smoothly discharging the floated light solid content to the storage tank 12 is provided in the upper part of the storage tank 12. The guide groove 19 and the storage tank 12 are connected to each other by pipe lines 21 and 21 via a second opening / closing valve 20. Further, the storage tank 12 is provided with a stirrer 22 for stirring the stored solid content and a liquid level gauge 23 for measuring the liquid level 12a in the storage tank. The level gauge 23 may be a conventionally known one.

一方反対側には清澄水分離槽１３が隣接して設けられており、清澄水分離槽１３は略中間液レベルに設けられた開口２７を介して連通している。また、清澄水を取り出すための清澄水管２８が適宜の位置に設けられている。清澄水管２８の取水口２８ａの高さレベルはろ液分離槽１１の通常運転時の水面レベルより少し低くなっている。清澄水管２８に清澄水が円滑に流れる程度に低くするのが望ましい。 On the other hand, a clarified water separation tank 13 is provided adjacent to the other side, and the clarified water separation tank 13 communicates with an opening 27 provided at a substantially intermediate liquid level. A clarified water pipe 28 for taking out clarified water is provided at an appropriate position. The height level of the intake port 28 a of the clarified water pipe 28 is slightly lower than the water level during normal operation of the filtrate separation tank 11. It is desirable to make it low enough to allow clear water to flow smoothly through the clear water pipe 28.

また、ろ液分離槽１１の底と貯留槽１２の底は第１開閉弁３０を介して管路３１、３１により連通しており、更に、貯留槽１２の底は第３開閉弁３２を介して外部（例えば、汚泥貯留槽）に連通している。第１開閉弁３０、第２開閉弁２０、第３開閉弁３２及び攪拌機２２は制御装置３５によって制御されている。以下に本実施形態の装置の運転、制御手順について説明する。 In addition, the bottom of the filtrate separation tank 11 and the bottom of the storage tank 12 are communicated with each other via pipes 31 and 31 via a first on-off valve 30, and the bottom of the storage tank 12 is further connected via a third on-off valve 32. And communicate with the outside (for example, a sludge storage tank). The first on-off valve 30, the second on-off valve 20, the third on-off valve 32, and the agitator 22 are controlled by a control device 35. The operation and control procedures of the apparatus according to this embodiment will be described below.

図３において、ステップＳ１は脱水ろ液でろ液分離槽１１を満たしていき、清澄水管２８から清澄水の排出が始まる状態で運転を開始する。このときの状況を図５（Ａ）に示す。貯留槽１２内の固形分の量が少なく液位計２３の液レベルは中レベル以下であり、第１開閉弁３０、第２開閉弁２０及び第３開閉弁３２は閉じた状態にある。ステップＳ２では運転開始から所定時間Ｔ１経過したときに第２開閉弁２０を時間Ｔ２だけ開いて浮上固形分をガイド溝１９から貯留槽１２へ送出する。このときの状況を図５（Ｂ）に示す。ステップＳ３では第２開閉弁２０を閉じた後第１開閉弁３０を時間Ｔ４だけ開いて沈殿固形分をろ液分離槽１１から貯留槽１２へ送出する。この際、沈殿固形分の送出はろ液分離槽１１と貯留槽１２の水位ヘッド差により行う。このときの状況を図６（Ｃ）に示す。この際ろ液分離槽１１内の液面レベルが多少下がり、清澄水管２８からの清澄水量が減少する。 In FIG. 3, step S <b> 1 fills the filtrate separation tank 11 with dehydrated filtrate, and starts operation in a state where discharge of clarified water from the clarified water pipe 28 starts. The situation at this time is shown in FIG. The amount of solids in the storage tank 12 is small, and the liquid level of the liquid level gauge 23 is below the medium level, and the first on-off valve 30, the second on-off valve 20, and the third on-off valve 32 are closed. In step S2, when the predetermined time T1 has elapsed from the start of operation, the second on-off valve 20 is opened for a time T2, and the floating solid content is sent from the guide groove 19 to the storage tank 12. The situation at this time is shown in FIG. In step S3, after closing the 2nd on-off valve 20, the 1st on-off valve 30 is opened only for time T4, and precipitation solid content is sent to the storage tank 12 from the filtrate separation tank 11. FIG. At this time, the precipitated solid content is sent out by the difference in water level head between the filtrate separation tank 11 and the storage tank 12. The situation at this time is shown in FIG. At this time, the liquid level in the filtrate separation tank 11 is somewhat lowered, and the amount of clarified water from the clarified water pipe 28 is decreased.

このとき貯留槽１２の液レベルが中レベルを超えていれば攪拌機２２を回転させて貯留槽１２の固形分（浮上した固形分、沈殿した固形分）を混合する（ステップＳ４）。この操作（ステップＳ２〜ステップＳ４）を貯留槽１２の液レベルが高レベルを超えるまで繰り返す。液レベルが高レベルを超えたときは第３開閉弁３２を開いて貯留槽１２内の混合固形分を外部に送出する。このときの状況を図６（Ｄ）に示す。混合固形分の送出は液レベルが底レベルに到達するまで続行する。以上の操作を運転停止まで行う。なお、Ｔ１（浮上固形分初期排出開始時間）、Ｔ３（浮上固形分排出開始時間）は何れも（０〜６０）分の範囲から選択し、Ｔ２（浮上固形分排出時間）、Ｔ４（沈殿固形分排出時間）は何れも（０〜６０）分の範囲から選択するのが望ましい。この時間選択により、水槽からのあふれ防止を図ったり、水位ヘッド差がうまく確保でき、装置の処理連続性が確保できる。
図４は以上の流れを示したタイムチャートである。 At this time, if the liquid level in the storage tank 12 exceeds the middle level, the stirrer 22 is rotated to mix the solid content (the solid content that has floated and the solid content that has precipitated) in the storage tank 12 (step S4). This operation (step S2 to step S4) is repeated until the liquid level in the storage tank 12 exceeds the high level. When the liquid level exceeds the high level, the third on-off valve 32 is opened to send the mixed solid content in the storage tank 12 to the outside. The situation at this time is shown in FIG. Delivery of the mixed solids continues until the liquid level reaches the bottom level. The above operation is performed until the operation is stopped. T1 (floating solid initial discharge start time) and T3 (floating solid discharge start time) are both selected from the range of (0-60) minutes, and T2 (floating solid discharge time), T4 (precipitated solid) It is desirable to select any of (minute discharge time) from the range of (0 to 60) minutes. By selecting the time, overflow from the water tank can be prevented, a difference in the water level head can be secured well, and the processing continuity of the apparatus can be secured.
FIG. 4 is a time chart showing the above flow.

以上に説明したように、本実施形態よれば、従来装置に比べてより掻寄ブレード６４、６５の代わりに自然分離を利用して軽固形分を分離除去するようにしたので、渦流が発生せず固形分の沈降や浮上が静かに円滑に行われ、装置のコンパクト化が可能になり、かつ、構造も簡単になり故障が生じにくく、信用性が高くなるという効果が得られる。又製造コストも安価になり、掻寄ブレード６４、６５を駆動する装置も不要となり、装置のコストやランニングコストが安価になるという効果も得られる。 As described above, according to the present embodiment, light solids are separated and removed by using natural separation instead of the scraping blades 64 and 65 as compared with the conventional apparatus, so that eddy currents are not generated. In addition, the sedimentation and floating of the solid content is performed smoothly and smoothly, the apparatus can be made compact, the structure is simplified, the failure is less likely to occur, and the reliability is improved. In addition, the manufacturing cost is reduced, the device for driving the scraping blades 64 and 65 is not required, and the cost of the device and the running cost can be reduced.

以上、この発明の実施形態、実施例を図面により詳述してきたが、具体的な構成はこの実施例に限られるものではなく、この発明の要旨を逸脱しない範囲の設計の変更等があってもこの発明に含まれる。 The embodiments and examples of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to the examples, and there are design changes and the like without departing from the gist of the present invention. Are also included in the present invention.

本発明を実施した実施形態の全体正面図を示す。The whole front view of the embodiment which carried out the present invention is shown. 本実施形態の上面図を示す。The top view of this embodiment is shown. 本実施形態の操作のフローチャートを示す。The flowchart of operation of this embodiment is shown. 本実施形態のタイムチャートを示す。The time chart of this embodiment is shown. （Ａ）、（Ｂ）は本実施形態の工程における状況を示す。(A), (B) shows the situation in the process of this embodiment. （Ｃ）、（Ｄ）は本実施形態の続きの工程における状況を示す。(C) and (D) show the situation in the subsequent steps of this embodiment. 従来装置の周辺システムを示す。The peripheral system of a conventional apparatus is shown. 従来装置の正面図を示す。The front view of a conventional apparatus is shown. 従来装置の上面図を示す。The top view of a conventional apparatus is shown.

符号の説明Explanation of symbols

１０ろ液分離装置（分離除去装置）
１１ろ液分離槽（分離槽）
１２貯留槽
１３清澄水分離槽
１５ろ液供給管（排液供給パイプ）
１７散水装置
１９ガイド溝
２０第２開閉弁
２２攪拌機
２７清澄水連通孔
２８清澄水管
３０第１開閉弁
３２第３開閉弁
３５コントローラ（制御装置） 10 Filtrate separation device (separation removal device)
11 Filtrate separation tank (separation tank)
12 Reservation tank 13 Clear water separation tank 15 Filtrate supply pipe (drainage supply pipe)
17 Watering device 19 Guide groove 20 Second on-off valve 22 Stirrer 27 Clear water communication hole 28 Clear water pipe 30 First on-off valve 32 Third on-off valve 35 Controller (control device)

Claims

汚泥処理装置の脱水機や濃縮機等から排出される排液中に含まれる固形分を分離して除去する分離除去装置において、該排液中に含まれる浮上固形分、沈降固形分と液分とを自然分離する分離槽と、該分離槽の液中に該排液の流出口を有する排液供給パイプと、浮上固形分を集めるガイド溝と、固形分を貯留する貯留槽と、該ガイドと該貯留槽との連結路に設けた第２開閉弁と、該貯留槽の液面レベルを計測する液面計と、該分離槽の中間液位レベルで連通する連通孔を有する清澄水分離槽と、該清澄水分離槽内に取水口を有する清澄水管と、該分離槽の底部と該貯留槽の底部との連通路に設けた第１開閉弁と、該貯留槽の底部と外部の適宜に位置に配置された外部装置とを連通する連通路に設けた第３開閉弁と、前記各開閉弁制御する制御装置を具備したことを特徴とする液中の固形分分離除去装置。
In a separation / removal device that separates and removes solids contained in the effluent discharged from the dehydrator, concentrator, etc. of the sludge treatment device, the floating solids, the precipitated solids and the liquids contained in the effluents A separation tank that naturally separates the liquid, a drainage supply pipe having an outlet for the drainage in the liquid of the separation tank, a guide groove that collects floating solids, a storage tank that stores solids, and the guide And a second open / close valve provided in a connection path between the storage tank, a liquid level gauge for measuring the liquid level of the storage tank, and a clear water separation having a communication hole communicating at an intermediate liquid level of the separation tank A tank, a clarified water pipe having a water intake in the clarified water separation tank, a first on-off valve provided in a communication path between the bottom of the separation tank and the bottom of the storage tank, the bottom of the storage tank, and an external A third on-off valve provided in a communication path communicating with an external device arranged at an appropriate position, and control for controlling each on-off valve Solids separating device in the liquid, characterized by comprising the location.

前記液面計は前記貯留槽内の液面レベルの高レベル、中レベル、低レベルを検出し、
前記制御装置は、
前記分離除去装置が運転中で、前記貯留槽の液面レベルが低レベル又は中レベルにあるときは前記第２開閉弁を一定時間ごとに開閉して前記浮上固形分を前記貯留槽へ放出して、前記第２開閉弁を閉止した後第１開閉弁を所定時間開いて、分離槽の底に沈降した固形分を水位ヘッド差により貯留槽中に流入させ、
前記貯留槽の液面レベルが中レベル以上になったときに前記貯留槽の攪拌機を回転させて前記浮上固形分と前記沈降固形分を混合し、
前記貯留槽の液面レベルが高レベルになったときに第３開閉弁を開いて前記混合固形分を外部装置に送出するように制御する
ことを特徴とする請求項１に記載の液中の固形分分離除去装置。 The liquid level gauge detects the high level, medium level, and low level of the liquid level in the storage tank,
The controller is
When the separation and removal device is in operation and the liquid level of the storage tank is at a low level or an intermediate level, the second on-off valve is opened and closed at regular intervals to release the floating solids to the storage tank. The first on-off valve is opened for a predetermined time after the second on-off valve is closed, and the solid content settled on the bottom of the separation tank is caused to flow into the storage tank due to the difference in water level head,
When the liquid level of the storage tank is equal to or higher than the medium level, the stirrer of the storage tank is rotated to mix the floating solids and the precipitated solids,
The control according to claim 1, wherein when the liquid level of the storage tank becomes a high level, the third on-off valve is opened and the mixed solid content is sent to an external device. A device for separating and removing solid components in the liquid.

前記分離槽の液面上方に散水装置を設けたことを特徴とする請求項１又は請求項２の何れか１に記載の液中の固形分分離除去装置。
The apparatus for separating and removing solid content in a liquid according to claim 1, wherein a watering device is provided above the liquid level of the separation tank.