JP2001079586A - Operation of sewage treating equipment - Google Patents
Operation of sewage treating equipmentInfo
- Publication number
- JP2001079586A JP2001079586A JP25992899A JP25992899A JP2001079586A JP 2001079586 A JP2001079586 A JP 2001079586A JP 25992899 A JP25992899 A JP 25992899A JP 25992899 A JP25992899 A JP 25992899A JP 2001079586 A JP2001079586 A JP 2001079586A
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- sewage
- water level
- facility
- aerator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Activated Sludge Processes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、生活排水等の汚水
を浮遊性の汚泥により生物処理する汚水処理設備の運転
方法に関し、特に、雨水や地下水等の不明水が多く流入
する施設であって、汚泥が軽く、重力沈降しにくい場合
においても、施設の外に汚泥が溢流することを未然に防
止し、安定した汚水の処理を行うようにした汚水処理設
備の運転方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of operating a sewage treatment facility for biologically treating sewage such as domestic wastewater with floating sludge, and more particularly to a facility into which a large amount of unknown water such as rainwater or groundwater flows. Also, the present invention relates to a method of operating a sewage treatment facility that prevents sludge from overflowing out of the facility and performs stable sewage treatment even when the sludge is light and hard to settle by gravity.
【０００２】[0002]
【従来の技術】近年、下水道設備は大都市から中小都市
に移行し、その規模は小さくなっており、処理の安定
性、維持管理性からオキデーションディッテ法（以下、
「ＯＤ法」といい、ＯＤ法を実施する設備を「ＯＤ設
備」という。）が多く採用されている。このＯＤ法の主
要機器は、汚水ポンプ、曝気機、汚泥掻寄機、返送汚泥
ポンプ等の多くの機器から構成される。そしてその運転
は、通常、汚水ポンプが水位運転、曝気機がタイマー運
転又は溶存酸素値（ＤＯ値）等をフィードバックする自
動制御運転（以下、溶存酸素値に基づいて行う自動制御
を「ＤＯ制御」という。）、汚泥掻寄機が連続運転、返
送汚泥ポンプが連続運転又はタイマー運転であり、それ
ぞれが自動的に運転がなされている。2. Description of the Related Art In recent years, sewerage facilities have shifted from large cities to small and medium-sized cities, and their scale has been reduced.
The equipment that implements the OD method is called “OD equipment”. ) Is often adopted. The main equipment of the OD method is composed of many equipment such as a sewage pump, an aerator, a sludge scraper, and a return sludge pump. Normally, the operation is a water level operation of a sewage pump, a timer operation of an aerator, or an automatic control operation of feeding back a dissolved oxygen value (DO value) (hereinafter, “DO control” is an automatic control performed based on a dissolved oxygen value). ), The sludge scraper is a continuous operation, the return sludge pump is a continuous operation or a timer operation, and each is automatically operated.
【０００３】[0003]
【発明が解決しようとする課題】ところで、ＯＤ法の活
性汚泥は、長時間曝気型の汚泥であり、加えて機械式曝
気撹拌機により活性汚泥フロックが壊されて小さくなり
がちで、標準活性汚泥法の汚泥より沈降しにくくなって
いる。一方、ＯＤ設備の維持管理体制は、処理規模によ
って異なり、大きい施設では、昼間は維持管理者が常駐
し、夜間は無人の場合が多く、また小さい規模の施設で
は、１週間に１乃至２回の巡回点検が行われる程度の内
容となっている。このような状況下において、大雨等が
原因で、計画汚水量を超える水が処理施設内に流入した
場合、曝気槽の活性汚泥が最終沈殿池に大量に移行し、
そこで十分な沈殿時間が得られず、処理水に混ざって、
処理場の系外に出て行くことになる。このことは、処理
水質が悪化するだけでなく、汚泥の溢流の程度によって
は、再度、活性汚泥を育成しなおさなければならない
し、放流先の水環境に悪影響が及ぶという問題があっ
た。By the way, the activated sludge of the OD method is a long-time aerated type sludge. In addition, the activated sludge floc tends to be broken down by a mechanical aeration stirrer and becomes small. It is harder to settle than sludge of the law. On the other hand, the maintenance system for OD equipment varies depending on the processing scale. In large facilities, maintenance managers are resident during the day and unmanned at night in many cases, and in smaller facilities once or twice a week. It is a content that the patrol inspection of is performed. Under such circumstances, when water exceeding the planned amount of wastewater flows into the treatment facility due to heavy rain, etc., a large amount of activated sludge in the aeration tank moves to the final sedimentation tank,
Therefore, sufficient precipitation time was not obtained, mixed with treated water,
You will be out of the treatment plant. This not only deteriorates the quality of the treated water, but also has to raise the activated sludge again depending on the degree of sludge overflow, which has a problem of adversely affecting the water environment of the discharge destination.
【０００４】また、これを防止するシステムとして、図
３に示すように、処理場には水位計を設置して、高水位
の警戒レベルに水位が達した時点で、非常通報装置によ
る連絡が維持管理者に入るようになっているが、非常通
報装置による警報の連絡があっても、夜間や休日の場合
は、処理場より離れた位置に待機している維持管理者
が、処理場に到着するまでに時間がかかり、必要な処置
を施すまでに曝気槽の活性汚泥が最終沈殿池に大量に移
行して、そこで十分な沈殿時間が得られずに処理水に混
ざって、処理場の系外に、汚泥が溢流してしまうという
問題があった。As a system for preventing this, as shown in FIG. 3, a water level gauge is installed in the treatment plant, and when the water level reaches the high water level warning level, communication by the emergency notification device is maintained. Even if there is an alert notification from the emergency notification device, at night or on holidays, the maintenance manager who is waiting at a location away from the treatment plant arrives at the treatment plant. It takes a long time to perform the treatment, and the activated sludge in the aeration tank migrates in large quantities to the final sedimentation basin before the necessary treatment is performed. Outside, there was a problem that sludge overflowed.
【０００５】本発明は、従来の汚水処理設備の運転方法
の有する問題点を解決し、高水位の警戒レベルに水位が
達した時、自動的に汚泥溢流防止システムが働くように
して、維持管理者が処理場に到着するまでの間にも、汚
泥が系外に流れ出ないようにすることができる汚水処理
設備の運転方法を提供することを目的とする。[0005] The present invention solves the problems of the conventional method of operating a sewage treatment facility, and automatically activates and maintains a sludge overflow prevention system when a water level reaches a high water level alert level. It is an object of the present invention to provide a method of operating a sewage treatment facility that can prevent sludge from flowing out of the system even before a manager arrives at a treatment plant.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するた
め、本発明の汚水処理設備の運転方法は、汚水受水槽、
曝気槽及び最終沈殿池並びにそれに付帯する曝気機、汚
泥掻寄機、返送汚泥ポンプ等の機器から構成され、生活
排水などの汚水を処理する汚水処理設備の運転方法にお
いて、施設の水位が設定された高水位の警戒レベルに達
した時に、曝気機、汚泥掻寄機、返送汚泥ポンプのいず
れか１種若しくは複数の機器を自動的に停止して、施設
外に汚泥が溢流するのを未然に防止するようにしたこと
を特徴とする。In order to achieve the above object, a method for operating a sewage treatment plant according to the present invention comprises a sewage receiving tank,
The aeration tank and final sedimentation basin and the associated aerators, sludge scrapers, return sludge pumps, and other equipment are used to set the water level of the facility in the method of operating sewage treatment equipment that treats sewage such as domestic wastewater. When the high water level alert level is reached, one or more of the aerator, sludge scraper and return sludge pump are automatically stopped to prevent sludge from overflowing the facility. It is characterized by being prevented.
【０００７】上記の構成からなる本発明の汚水処理設備
の運転方法は、激しい降雨時等において、汚水受水槽、
曝気槽、最終沈殿池等の施設内の汚水処理量以上の汚水
が流入して、汚水受水槽内で予め設定した高水位の警戒
レベルに水位が達した時、自動的に汚泥溢流防止システ
ムが働くようにしているので、維持管理者が処理場に到
着するまでの間にも、汚泥が系外に流れ出ないようにす
ることができ、どのように状態でも安定した汚水の処理
を行うことができる。[0007] The method of operating the sewage treatment equipment of the present invention having the above-described structure is capable of receiving a sewage receiving tank,
Sludge overflow prevention system automatically when sewage exceeding the amount of sewage treatment in the aeration tank, final sedimentation basin, etc. flows in and the water level reaches a preset high water level in the sewage receiving tank. Works so that the sludge can be prevented from flowing out of the system before the maintenance manager arrives at the treatment plant, and the wastewater can be treated stably in any condition. Can be.
【０００８】また、この場合、施設の水位が設定された
高水位の警戒レベル以下になった時に、停止している曝
気機、汚泥掻寄機、返送汚泥ポンプのいずれか１種若し
くは複数の機器を、自動的に通常運転に復帰するように
することができる。In this case, when the water level of the facility falls below the set high water level alert level, any one or more of the stopped aerators, sludge scrapers and return sludge pumps are provided. Can be automatically returned to the normal operation.
【０００９】これにより、施設内への汚水処理量が減少
し、汚水受水槽の水位が設定された高水位の警戒レベル
以下になると自動的に通常運転に切り替えられるので、
流入汚水量に関係なく常に安定した汚水の処理が行え
る。As a result, the amount of sewage treated into the facility decreases, and when the water level of the sewage receiving tank falls below the set high water level alert level, the operation is automatically switched to the normal operation.
Stable sewage treatment can always be performed regardless of the amount of inflow sewage.
【００１０】[0010]
【発明の実施の形態】以下、本発明の汚水処理設備の運
転方法の実施の形態を図面に基づいて説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the method for operating a sewage treatment plant according to the present invention will be described below with reference to the drawings.
【００１１】図１〜図２は、本発明の第１実施例を示
し、図１は、オキシデーションディッテ法の水処理フロ
ーである。図において１は、汚水受水槽であり、通常、
汚水受水槽１には複数台の汚水ポンプ１１と水位計１２
とが設置され、汚水受水槽１に導入される汚水を、水位
計１２で検知しつつ、通常運転用の汚水ポンプ１１を連
続的又は間欠的さらには選択的に運転して曝気槽２へ送
水されように構成される。また、この汚水受水槽１に複
数台設置される汚水ポンプ１１は、そのうち少なくとも
１台を予備若しくは非常運転用として使用される。FIGS. 1 and 2 show a first embodiment of the present invention, and FIG. 1 shows a flow of water treatment by the oxidation ditter method. In the figure, reference numeral 1 denotes a sewage receiving tank.
The sewage receiving tank 1 has a plurality of sewage pumps 11 and water level gauges 12.
Is installed, and while detecting the sewage introduced into the sewage receiving tank 1 with the water level gauge 12, the sewage pump 11 for normal operation is continuously or intermittently or selectively operated to supply water to the aeration tank 2. It is configured to be. Further, at least one of the sewage pumps 11 installed in the sewage receiving tank 1 is used for spare or emergency operation.
【００１２】汚水ポンプ１１の運転は、通常、水位計１
２で検知される水位レベルにより、通常運転用の汚水ポ
ンプ１１が、起動若しくは停止されて、間欠的に曝気槽
２へ汚水受水槽１から汚水が送水される。そして、この
曝気槽２には、曝気機２１が設置され、曝気機２１の運
転により曝気槽２内に供給された汚水中に空気（酸素）
を供給するとともに、曝気機２１により生じる撹拌流に
より汚水と活性汚泥を均一に混合撹拌して、汚水を生物
処理するようにしている。この曝気機２の運転は、タイ
マーにより設定されるか、若しくはＤＯ制御等による自
動運転がなされる。The operation of the sewage pump 11 is usually performed by the water level meter 1.
The sewage pump 11 for normal operation is started or stopped according to the water level detected in 2, and sewage is intermittently sent from the sewage receiving tank 1 to the aeration tank 2. An aerator 21 is installed in the aeration tank 2, and air (oxygen) is contained in the sewage supplied into the aeration tank 2 by the operation of the aerator 21.
Is supplied, and the sewage and activated sludge are uniformly mixed and stirred by the stirring flow generated by the aerator 21 so that the sewage is biologically treated. The operation of the aerator 2 is set by a timer, or is automatically performed by DO control or the like.
【００１３】さらに、曝気槽２内で処理された汚水と汚
泥の混合液は、通常、水路若しくは配管により最終沈殿
池３へ移送される。この最終沈殿池３では、水と汚泥が
比重差により重力分離されるが、比重の大きい汚泥は最
終沈殿池の底部に溜り、上澄水は消毒槽４へ送水され
て、滅菌後系外に放流される。一方、汚泥は、最終沈殿
池３内に配設された汚泥掻寄機３１が連続的に運転され
ているので、集積部に掻寄せられた後に、大部分の汚泥
は最終沈殿池内又は外部に配設された返送汚泥ポンプ３
２により曝気槽２に返流され、その内の一部を余剰汚泥
として処分されるようにしている。Further, the mixed liquid of the sewage and the sludge treated in the aeration tank 2 is usually transferred to the final sedimentation basin 3 by a water channel or a pipe. In this final sedimentation basin 3, water and sludge are separated by gravity due to a difference in specific gravity. However, sludge having a large specific gravity accumulates at the bottom of the final sedimentation basin, and supernatant water is sent to the disinfection tank 4 and discharged out of the system after sterilization. Is done. On the other hand, since the sludge scraper 31 disposed in the final sedimentation basin 3 is continuously operated, most of the sludge is collected inside or outside the final sedimentation basin after being scraped by the accumulation part. Returned sludge pump 3 installed
The wastewater is returned to the aeration tank 2 by the second and a part thereof is disposed of as excess sludge.
【００１４】ところで、最近の処理場の汚水収集方式は
分流式であっても、配管の誤接合、破損、その他の理由
により、雨水や地下水が処理場に混入することもしばし
ばあり、これらの理由により、処理場に計画値以上の汚
水が流入することがある。このような場合は、汚水受水
槽１の水位が上昇し、通常運転の汚水ポンプ１１だけで
は汚水受水槽１に流入する汚水を排除できずに、汚水受
水槽１の水位が上昇し続ける。この水位の上昇を防止す
るため、本発明では水位計１２で予め設定した高水位の
警戒レベルに達したことを検知すると、非常用汚水ポン
プの起動だけでなく、施設内に配設された曝気機、返送
汚泥ポンプ、汚泥掻寄機等の機器の制御をも行うように
したものである。By the way, even if a recent wastewater treatment system of a treatment plant is of a diversion type, rainwater or groundwater often enters the treatment plant due to erroneous connection of pipes, breakage, or other reasons. Therefore, sewage more than the planned value may flow into the treatment plant. In such a case, the water level in the sewage receiving tank 1 rises, and the sewage pump 11 in the normal operation alone cannot eliminate the sewage flowing into the sewage receiving tank 1, and the water level in the sewage receiving tank 1 keeps rising. In order to prevent the rise of the water level, in the present invention, when the water level gauge 12 detects that the warning level of the preset high water level has been reached, not only the emergency wastewater pump is started but also the aeration provided in the facility. It also controls equipment such as a sludge pump, a return sludge pump, and a sludge scraper.
【００１５】予め設定した高水位の警戒水位前後におけ
る曝気機、返送汚泥ポンプ、汚泥掻寄機等の機器の運転
フローを、図２に示す。以下、警戒水位前後の機器の運
転制御の説明を、図２に基づいて説明する。汚水受水槽
１に流入する汚水の水位が、予め設定した高水位の警戒
レベル以下を水位計１２にて検出している場合は、通常
運転、即ち通常運転の汚水ポンプ１１、曝気機２１、汚
泥掻寄機３１及び返送汚泥ポンプ３２が運転され、非常
用汚水ポンプは停止した状態で、汚水受水槽１に流入す
る汚水は、曝気槽２、最終沈殿池３を順次経過して処理
されている。ところが、激しい降雨などにて汚水受水槽
１に流入する汚水量が増し、設定流入量以上となり、単
位時間当たりの処理量以上が流入するようになると、汚
水受水槽１の水位が次第に上昇し、やがて警戒レベルに
達する。この警戒レベルに達っしたことを水位計１２に
て検知する。FIG. 2 shows the operation flow of equipment such as an aerator, a return sludge pump, and a sludge scraper before and after a preset high water level warning water level. Hereinafter, the operation control of the devices before and after the warning water level will be described with reference to FIG. When the water level of the sewage flowing into the sewage receiving tank 1 is detected by the water level gauge 12 below a preset high water level warning level, the sewage pump 11, the aerator 21, and the sludge of the normal operation are used. While the scraper 31 and the return sludge pump 32 are operated and the emergency wastewater pump is stopped, the sewage flowing into the sewage receiving tank 1 is sequentially processed through the aeration tank 2 and the final sedimentation basin 3. . However, when the amount of sewage flowing into the sewage receiving tank 1 due to heavy rainfall increases and exceeds the set inflow amount, and the amount of treatment per unit time or more flows in, the water level of the sewage receiving tank 1 gradually increases, Eventually the alert level is reached. The water level gauge 12 detects that the alarm level has been reached.
【００１６】従来の通常運転では、図３に示すように、
水位が警戒レベルに達した段階で、自動非常警報装置に
より維持管理者へ外部通報がなされるとともに、非常用
汚水ポンプが運転され、維持管理者が処理場で適当な処
置を行うようにしている。しかし、本発明においては、
図２に示すように、水位が警戒レベルに達してこの非常
用汚水ポンプが運転された段階で、関係するリレーの状
態を検出し、曝気機２１、返送汚泥ポンプ３２、汚泥掻
寄機３１等の施設内の機器類を緊急停止させるようにす
る。この施設内の機器類を緊急停止は、リレーの状態を
検出する以外に、さらに別の手段として、水位計１２の
信号により、直接、これらの機器を停止するようにする
こともできる。この機器類の停止方法は限定されるもの
ではなく、種々の方法で行うことができる。なお、本実
施例では、曝気機２１、返送汚泥ポンプ３２、汚泥掻寄
機３１のすべてを停止させているが、必要に応じて、例
えば、時間当たりの流入量に合わせてこれらの機器の
内、少なくともいずれか１台を自動的に停止させ、汚泥
の溢流を未然にを防止させるようにすることもできる。In conventional normal operation, as shown in FIG.
When the water level reaches the alert level, an external alarm is sent to the maintenance person by the automatic emergency alarm device, and the emergency sewage pump is operated so that the maintenance person can take appropriate measures at the treatment plant. . However, in the present invention,
As shown in FIG. 2, when the water level reaches the alert level and the emergency sewage pump is operated, the state of the related relay is detected, and the aerator 21, the return sludge pump 32, the sludge scraper 31, etc. Emergency stop of equipment in the facility. The emergency stop of the equipment in the facility can be performed by directly stopping the equipment by the signal of the water level gauge 12 as another means other than detecting the state of the relay. The method of stopping the devices is not limited, and can be performed by various methods. In this embodiment, the aerator 21, the return sludge pump 32, and the sludge scraper 31 are all stopped. However, if necessary, for example, any of these devices may be stopped according to the inflow per hour. It is also possible to automatically stop at least one of the units to prevent sludge from overflowing.
【００１７】このように曝気槽２へ流入する汚水量が、
設定された計画値を超えた状況では、最終沈殿池３での
水量負荷が大きく、活性汚泥が十分に沈降・分離せず、
処理水と一緒に系外へ溢流するが、曝気機２１、返送汚
泥ポンプ３２、汚泥掻寄機３１等の機器類の全停止又は
選択停止のいずれにしても、機器を停止することによ
り、曝気槽か最終沈殿池のいずれかに汚泥を沈殿・貯留
できるので、汚泥の溢流を防止することができる。その
中でも、特に、曝気機２１を停止することが効果的であ
るが、これは、曝気槽が広大な沈殿面積を有するからで
ある。As described above, the amount of wastewater flowing into the aeration tank 2 is
In the situation exceeding the set plan value, the water load in the final sedimentation basin 3 is large, and the activated sludge does not settle and separate sufficiently.
Although it overflows out of the system together with the treated water, the apparatus is stopped by stopping the apparatus regardless of whether all of the equipment such as the aerator 21, the return sludge pump 32, and the sludge scraper 31 is stopped or is selectively stopped. Since sludge can be settled and stored in either the aeration tank or the final sedimentation basin, the overflow of sludge can be prevented. Among them, stopping the aerator 21 is particularly effective, because the aeration tank has a large sedimentation area.
【００１８】また、返送汚泥ポンプ３２の停止は、曝気
槽２と最終沈殿池３の間の水循環を停止することにな
り、曝気槽２や最終沈殿池３への流入水量を減ずること
ができるので、汚泥の溢流防止に一層効果的である。さ
らに、汚泥掻寄機３１の停止は、最終沈殿池内の流れを
弱め、汚泥の沈降速度を上げる効果がある。このよう
に、施設の水位が警戒レベルに達した段階で、自動的
に、設備内の機器の運転を停止すれば、維持管理者が非
常通報装置からの連絡を受けて、処理場に到着するまで
の間に、溢流する汚泥を未然に防止することができる。Further, when the return sludge pump 32 is stopped, the water circulation between the aeration tank 2 and the final sedimentation basin 3 is stopped, and the amount of water flowing into the aeration tank 2 and the final sedimentation basin 3 can be reduced. It is even more effective in preventing sludge from overflowing. Furthermore, stopping the sludge scraper 31 has the effect of weakening the flow in the final sedimentation basin and increasing the sludge settling speed. As described above, when the water level of the facility reaches the alert level, if the operation of the equipment in the facility is automatically stopped, the maintenance manager receives a notification from the emergency notification device and arrives at the treatment plant. In the meantime, overflowing sludge can be prevented.
【００１９】逆に、施設の水位が警戒レベル以下になっ
た段階においては、水位計１２の信号、若しくは、非常
用汚水ポンプの運転停止の指令により、自動的にこれら
の機器の運転を通常運転に切り替えることができ、ロス
なく従来運転を再開できる。Conversely, when the water level of the facility falls below the alert level, the operation of these devices is automatically performed in the normal operation mode by a signal from the water level gauge 12 or a command to stop the operation of the emergency sewage pump. The conventional operation can be resumed without loss.
【００２０】なお、計画値以上の汚水が処理場に流入
し、汚泥の溢流が懸念される場合は、通常、曝気槽を最
終沈殿池代わりに使用して汚泥を曝気槽の底部に沈降せ
しめるとともに、上層部だけを流入水が流れるようにし
て、汚泥の溢流防止を図るが、この場合、曝気槽の面積
は最終沈殿池に比べて大きいため、かなりの汚泥が曝気
槽内に保持できる。また、曝気槽へ流入する水量を少し
でも低減したり、汚泥の沈降効率を高くすることが有効
である。When sewage more than the planned value flows into the treatment plant and there is a possibility of sludge overflow, the aeration tank is usually used instead of the final sedimentation tank to settle the sludge at the bottom of the aeration tank. At the same time, the inflow water flows only in the upper layer to prevent the sludge from overflowing, but in this case, the area of the aeration tank is larger than the final sedimentation basin, so that considerable sludge can be retained in the aeration tank. . It is also effective to reduce the amount of water flowing into the aeration tank as much as possible and to increase the sludge settling efficiency.
【００２１】[0021]
【発明の効果】本発明の汚水処理設備の運転方法によれ
ば、激しい降雨時等において、汚水受水槽、曝気槽、最
終沈殿池等の施設内の汚水処理量以上の汚水が流入し
て、汚水受水槽内で予め設定した高水位の警戒レベルに
水位が達した場合でも、自動的に汚泥溢流防止システム
が働くようにしているので、維持管理者が処理場に到着
するまでの間にも、汚泥が系外に流れ出ないようにする
ことができ、どのように状態でも安定した汚水の処理を
行うことができる。According to the method for operating the sewage treatment equipment of the present invention, during heavy rainfall, etc., sewage in excess of the sewage treatment amount in the sewage receiving tank, aeration tank, final sedimentation basin, etc., flows in, Even if the water level reaches the preset high water level warning level in the sewage receiving tank, the sludge overflow prevention system is automatically activated. Also, sludge can be prevented from flowing out of the system, and stable treatment of sewage can be performed in any state.
【００２２】また、施設の水位が設定された高水位の警
戒レベル以下になった時に、停止している曝気機、汚泥
掻寄機、返送汚泥ポンプのいずれか１種若しくは複数の
機器を、自動的に通常運転に復帰するようにすることに
より、施設内への汚水処理量が減少し、汚水受水槽の水
位が設定された高水位の警戒レベル以下になると自動的
に、停止している曝気機等機器を運転して通常運転に切
り替えられるので、流入汚水量に関係なく常に安定した
汚水の処理が行える。When the water level of the facility falls below the set high water level alert level, one or more of the stopped aerator, sludge scraper and return sludge pump are automatically turned on. By returning to normal operation, the amount of sewage treatment into the facility is reduced, and when the water level in the sewage receiving tank falls below the set high water level alert level, the aeration is automatically stopped. The apparatus can be switched to the normal operation by operating the apparatus such as the apparatus, so that the sewage can be always stably treated regardless of the amount of inflow sewage.
【図１】本発明の汚水処理設備の運転方法の実施の形態
を示すオキシデーションディッテ法の水処理フローであ
る。FIG. 1 is a water treatment flow of an oxidation ditter method showing an embodiment of a method for operating a sewage treatment facility of the present invention.
【図２】本発明の汚水処理設備の運転方法を実施する設
備における機器類の運転フローである。FIG. 2 is an operation flow of equipment in equipment for implementing the operation method of the wastewater treatment equipment of the present invention.
【図３】従来の設備における機器類の運転フローであ
る。FIG. 3 is an operation flow of equipment in a conventional facility.
１ 汚水受水槽 １１ 汚水ポンプ １２ 水位計 ２ 曝気槽 ２１ 曝気機 ３ 最終沈殿池 ３１ 汚泥掻寄機 ３２ 返送汚泥ポンプ ４ 消毒槽 DESCRIPTION OF SYMBOLS 1 Sewage receiving tank 11 Sewage pump 12 Water level gauge 2 Aeration tank 21 Aerator 3 Final sedimentation basin 31 Sludge scraper 32 Return sludge pump 4 Disinfection tank
フロントページの続き Ｆターム(参考） 4D028 BB03 BC18 BD11 BD16 CA00 CA09 CA11 CC01 CD05 Continuation of the front page F term (reference) 4D028 BB03 BC18 BD11 BD16 CA00 CA09 CA11 CC01 CD05
Claims (2)
にそれに付帯する曝気機、汚泥掻寄機、返送汚泥ポンプ
等の機器から構成され、生活排水などの汚水を処理する
汚水処理設備の運転方法において、施設の水位が設定さ
れた高水位の警戒レベルに達した時に、曝気機、汚泥掻
寄機、返送汚泥ポンプのいずれか１種若しくは複数の機
器を自動的に停止して、施設外に汚泥が溢流するのを未
然に防止するようにしたことを特徴とする汚水処理設備
の運転方法。1. Operation of sewage treatment equipment for treating sewage such as domestic wastewater, comprising a sewage receiving tank, an aeration tank, a final sedimentation basin, and associated equipment such as an aerator, a sludge scraper, and a return sludge pump. In the method, when the water level of the facility reaches the set high water level alert level, one or more devices of the aerator, sludge scraper and return sludge pump are automatically stopped, and A method for operating a sewage treatment facility, characterized in that sludge is prevented from overflowing in advance.
ベル以下になった時に、停止している曝気機、汚泥掻寄
機、返送汚泥ポンプのいずれか１種若しくは複数の機器
を、自動的に通常運転に復帰するようにしたことを特徴
とする請求項１記載の汚水処理設備の運転方法。2. When the water level of the facility falls below the set high water level alert level, one or more of the stopped aerator, sludge scraper and return sludge pump are automatically turned on. The method for operating sewage treatment equipment according to claim 1, wherein the normal operation is returned to normal operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25992899A JP2001079586A (en) | 1999-09-14 | 1999-09-14 | Operation of sewage treating equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25992899A JP2001079586A (en) | 1999-09-14 | 1999-09-14 | Operation of sewage treating equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001079586A true JP2001079586A (en) | 2001-03-27 |
Family
ID=17340887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25992899A Pending JP2001079586A (en) | 1999-09-14 | 1999-09-14 | Operation of sewage treating equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001079586A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009028673A (en) * | 2007-07-30 | 2009-02-12 | Miike Iron Works Co Ltd | Apparatus for reducing sludge volume |
| JP2010247127A (en) * | 2009-04-20 | 2010-11-04 | Kobelco Eco-Maintenance Co Ltd | Method of operating organic waste water treatment facility |
| CN113958518A (en) * | 2021-11-17 | 2022-01-21 | 刘小军 | Internet water pump station and automatic adjusting method thereof |
-
1999
- 1999-09-14 JP JP25992899A patent/JP2001079586A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009028673A (en) * | 2007-07-30 | 2009-02-12 | Miike Iron Works Co Ltd | Apparatus for reducing sludge volume |
| JP2010247127A (en) * | 2009-04-20 | 2010-11-04 | Kobelco Eco-Maintenance Co Ltd | Method of operating organic waste water treatment facility |
| CN113958518A (en) * | 2021-11-17 | 2022-01-21 | 刘小军 | Internet water pump station and automatic adjusting method thereof |
| CN113958518B (en) * | 2021-11-17 | 2024-03-22 | 北京三友卓越科技有限公司 | Internet water pump station and automatic adjusting method thereof |
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