JP2792009B2 - Sewage treatment method - Google Patents
Sewage treatment methodInfo
- Publication number
- JP2792009B2 JP2792009B2 JP1261003A JP26100389A JP2792009B2 JP 2792009 B2 JP2792009 B2 JP 2792009B2 JP 1261003 A JP1261003 A JP 1261003A JP 26100389 A JP26100389 A JP 26100389A JP 2792009 B2 JP2792009 B2 JP 2792009B2
- Authority
- JP
- Japan
- Prior art keywords
- sewage
- vacuum
- tank
- vacuum generator
- wastewater
- 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.)
- Expired - Lifetime
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)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） この発明は汚水処理方法に関し、詳しくは真空発生装
置を用いて行う汚水処理方法に関する。Description: TECHNICAL FIELD The present invention relates to a sewage treatment method, and more particularly, to a sewage treatment method performed using a vacuum generator.
（従来の技術及び発明が解決しようとする課題） 汚水の処理方法として、真空発生装置で発生させた真
空により汚水を吸引・収集して後段の汚水処理装置へと
送り出し、そこで汚水を浄化処理する真空式汚水処理方
法が知られている。(Problems to be Solved by the Related Art and the Invention) As a method of treating sewage, sewage is suctioned and collected by a vacuum generated by a vacuum generator, sent to a sewage treatment apparatus at a subsequent stage, and the sewage is purified there. Vacuum sewage treatment methods are known.
この真空式汚水処理方法の真空発生装置としては、従
来、真空ポンプにて真空を発生させる形式のものと、エ
ジェクターを用いて真空を発生させる形式のものとが用
いられている。Conventionally, as a vacuum generator of this vacuum type sewage treatment method, a type in which a vacuum is generated by a vacuum pump and a type in which a vacuum is generated by an ejector are used.
後者のエジェクター式のものは、槽内に汚水を一時収
容し、これをエジェクターにより噴出及び循環させつつ
真空を発生させるものであるが、従来の真空発生装置は
単に真空を発生させるためだけのものであって、槽内で
の汚水の浄化能力は特になく、従って後段の汚水処理装
置として浄化能力の高い、容量の大きいものが必要であ
った。The latter ejector type temporarily stores sewage in a tank and generates a vacuum while ejecting and circulating the wastewater by an ejector, but the conventional vacuum generator is only for generating a vacuum. However, there is no particular purification capability for sewage in the tank, and therefore, a wastewater treatment device of a later stage that has a high purification capability and a large capacity is required.
一方各家庭等に設置させる汚水処理装置としての浄化
槽においては、このような真空発生装置による真空吸引
は行われず、通常は重力によって汚水を槽内に流入させ
て浄化処理するようになっており、従ってその設置位置
については、汚水が円滑に槽内に流入し得るように一定
の制限を受ける不具合があった。On the other hand, in a septic tank as a sewage treatment apparatus to be installed in each household or the like, vacuum suction by such a vacuum generator is not performed, and the sewage is usually introduced into the tank by gravity to purify the wastewater. Therefore, there is a problem that the installation position is restricted to a certain extent so that the sewage can smoothly flow into the tank.
（課題を解決するための手段） 本発明はこのような課題を解決するためになされたも
のであり、その要旨は、真空発生装置と汚水源とを真空
吸引管路で連絡し、該真空発生装置にて発生させた真空
吸引力により該汚水源からの汚水を該真空吸引管路を通
じて該真空発生装置に収集した上、下流側の汚水処理装
置に送出して汚水の浄化処理を行うに際し、該真空発生
装置として、槽内の汚水をエジェクターにより噴出及び
循環させることによって真空を発生させる装置を用い、
且つ該真空発生装置における汚水の滞留時間を６〜19時
間に設定したことにある。(Means for Solving the Problems) The present invention has been made to solve such problems, and the gist of the present invention is to connect a vacuum generating device and a sewage source with a vacuum suction line to generate a vacuum. Upon collecting sewage from the sewage source by the vacuum suction force generated by the device through the vacuum suction line into the vacuum generator, and sending the sewage to a downstream sewage treatment device to purify the sewage, As the vacuum generator, using a device that generates a vacuum by ejecting and circulating sewage in the tank by an ejector,
In addition, the retention time of the sewage in the vacuum generator is set to 6 to 19 hours.
（作用及び発明の効果） 従来、エジェクター式の真空発生装置においては、槽
内の汚水の貯留量は少なく、通常その量は汚水が槽内に
流入してから槽外に流出するまでの滞留時間で0.6〜2.2
時間程度にすぎない。一方本発明においては、この真空
発生装置の槽の容量を大きくして、汚水の滞留時間を６
〜19時間としており、このようにすることによって、真
空発生装置に対して汚水の浄化能力を付与することがで
きる。エジェクター式の真空発生装置においては、汚水
と共に空気が槽内の貯留汚水中に勢い良く噴出されるた
めに、空気が多量に汚水中に溶解される。こうして空気
が多量に汚水中に溶解されると、汚水自身が有している
バクテリアの活性度が高まり、これによって汚水中の汚
物が分解されて、そこで浄化作用が行われるのである。
即ち本来の汚水処理装置による浄化処理に先立って、こ
の真空発生装置において汚水の前ばっ気処理，前浄化処
理が行われることとなるのである。(Effects and Effects of the Invention) Conventionally, in an ejector-type vacuum generator, the storage amount of sewage in a tank is small, and the amount of sewage is usually the residence time from when the sewage flows into the tank until it flows out of the tank. 0.6 to 2.2
It's only about an hour. On the other hand, in the present invention, the capacity of the tank of the vacuum generator is increased so that the residence time of
It is set to about 19 hours, and by doing so, it is possible to provide the vacuum generator with the ability to purify sewage. In an ejector-type vacuum generator, a large amount of air is dissolved in the sewage because the air is spouted vigorously into the stored sewage in the tank together with the sewage. When a large amount of air is dissolved in the sewage in this way, the activity of bacteria contained in the sewage itself increases, whereby the sewage in the sewage is decomposed and the purification action is performed there.
That is, prior to the purifying process by the original sewage treatment device, the pre-aeration process and the pre-purifying process of the sewage are performed in the vacuum generating device.
ところで、汚水処理装置においては、汚水の流量変動
を緩和するために流量調整槽が設けられるが、本発明に
よればかかる流量調整槽を省略することが可能となる。
何故なら、本発明によれば真空発生装置の槽内で汚水が
長時間滞留させられるから、そこで流量調整を行わしめ
ることができるからである。尚、流量調整槽には夾雑物
を除去するためのスクリーンや、沈降防止のばっ気や撹
拌のためのブロワー等が設けられるが、本発明ではエジ
ェクターが夾雑物を噴射エネルギーで粉砕し、且つ同時
にばっ気，撹拌作用を行うので、かかる流量調整槽を省
略しても何等支障は生じない。そればかりか、エジェク
ターによる粗大固形物の微細化効果によって、後段の汚
水処理装置において、かかる固形物が微生物により分解
され易くなる。By the way, in the sewage treatment apparatus, a flow rate adjusting tank is provided to alleviate fluctuations in the flow rate of sewage. According to the present invention, such a flow rate adjusting tank can be omitted.
This is because according to the present invention, since the wastewater is kept in the tank of the vacuum generator for a long time, the flow rate can be adjusted there. The flow rate adjusting tank is provided with a screen for removing impurities, a blower for aeration and stirring for preventing sedimentation, etc.In the present invention, the ejector pulverizes the impurities with injection energy, and at the same time, Since the aeration and stirring functions are performed, no trouble occurs even if the flow rate adjusting tank is omitted. In addition, the solids are easily decomposed by microorganisms in the subsequent sewage treatment apparatus due to the effect of the ejector to make the coarse solids finer.
更に真空発生装置において汚水の前処理が行われるこ
ととなるため、汚水中に食品加工排水を流入させても、
かかる汚水の後段の汚水処理装置で十分に処理可能とな
る。Furthermore, since pretreatment of sewage is performed in the vacuum generator, even if food processing wastewater flows into the sewage,
The wastewater can be sufficiently treated by a wastewater treatment device at a later stage of such wastewater.
このように本発明によれば、真空発生装置において汚
水の前処理、即ち前浄化作用が行われ、従って後段の本
来の汚水処理装置の処理能力が補われるとともに、流量
調整槽を省略することが可能となるため、汚水処理装置
を小型化，小容量化することができる効果が生ずる。As described above, according to the present invention, the pretreatment of sewage, that is, the pre-purification action, is performed in the vacuum generator, so that the processing capacity of the original sewage treatment apparatus at the subsequent stage is supplemented, and the flow rate adjustment tank can be omitted. As a result, the sewage treatment apparatus can be reduced in size and capacity.
また本発明を浄化槽に適用した場合、真空吸引力にて
汚水を収集し得るために、浄化槽の設置位置の制限が緩
和される利点が生ずる。In addition, when the present invention is applied to a septic tank, since wastewater can be collected by vacuum suction, there is an advantage that the restriction on the installation position of the septic tank is eased.
（実施例） 次に本発明の実施例を図面に基づいて詳しく説明す
る。(Example) Next, an example of the present invention will be described in detail with reference to the drawings.
第１図において10は汚水処理装置で、その前段にエジ
ェクター式真空発生装置12が設けられている。この真空
発生装置12は槽14を有し、内部に汚水16が貯留されてい
る。貯留された汚水16は、ポンプ18により管路20を通じ
て汚水処理装置10へと送られる。In FIG. 1, reference numeral 10 denotes a sewage treatment apparatus, which is provided with an ejector-type vacuum generator 12 at the preceding stage. The vacuum generating device 12 has a tank 14 in which sewage 16 is stored. The stored sewage 16 is sent to the sewage treatment apparatus 10 through a pipe 20 by a pump 18.
槽14の内部には、エジェクター22が設けられており、
かかるエジェクター22によって汚水16が槽14内を循環さ
せられるとともに、その際に真空が発生させられるよう
になっている。即ち槽14内の汚水16は、ポンプ24（ここ
では水中ポンプ。但し水中ポンプでなくても良い）によ
り循環路26内に導かれ、更にエジェクター22の噴出口28
より槽14中に勢い良く噴出され、そしてその噴出流に基
づいて真空を発生させる。尚真空発生装置12の槽14の容
量は、槽14内に流入した汚水16が槽14外に流出するまで
６〜19時間滞留するように設定されている。An ejector 22 is provided inside the tank 14,
The wastewater 16 is circulated in the tank 14 by the ejector 22, and a vacuum is generated at that time. That is, the sewage 16 in the tank 14 is guided into the circulation path 26 by a pump 24 (here, a submersible pump, but not a submersible pump).
It is more vigorously jetted into the tank 14 and generates a vacuum based on the jet flow. The capacity of the tank 14 of the vacuum generator 12 is set so that the sewage 16 flowing into the tank 14 stays for 6 to 19 hours before flowing out of the tank 14.
上記真空発生装置12で発生した真空は、真空吸引管路
としての主管路32及び枝管路34を通じて汚水ビット30へ
と伝えられ、汚水ビット（汚水源）30内の汚水16がこれ
ら枝管路34及び主管路32を通じて空気と共に真空発生装
置12の槽14へと真空吸引される。尚汚水ビット30には、
手洗器36や便器等からの汚水16が管路38を通じて流入
し、そこに一定量貯留される。The vacuum generated by the vacuum generator 12 is transmitted to the sewage bit 30 through a main line 32 and a branch line 34 as a vacuum suction line, and the sewage 16 in the sewage bit (sewage source) 30 Vacuum is sucked together with air into the tank 14 of the vacuum generating device 12 through the main line 32 and 34. The sewage bit 30 has
Sewage 16 from a hand basin 36 or a toilet bowl flows in through a conduit 38 and is stored in a certain amount there.
またこのような汚水ビット30を介することなく、真空
便器（汚水源）40を直接枝管路42を介して主管路32に接
続するようにしても良い。Further, the vacuum toilet (sewage source) 40 may be directly connected to the main pipeline 32 via the branch pipeline 42 without passing through such a wastewater bit 30.
主管路32には、空気の導入管44が接続されており、主
管路32内の圧力を検知して作動する電磁弁46の制御の下
に、主管路32内に空気が導かれるようになっている。An air introduction pipe 44 is connected to the main conduit 32, and air is guided into the main conduit 32 under the control of a solenoid valve 46 that operates by detecting the pressure in the main conduit 32. ing.
一般に真空汚水処理システムにおいては、汚水の発生
が１日のうちの所定時間帯に集中する。そして真空発生
装置は、従来、汚水の発生・供給のある間作動し、発生
する汚水が無くなると作動停止してしまう。具体的に
は、汚水ビット30への汚水の流入が停止して、汚水ビッ
ト30内の汚水の貯留量が一定以下に減少したとき、主管
路32内の圧力の低下に基づいて作動停止する（汚水ビッ
ト30内の汚水の水位が低下すると、弁31が閉作動して汚
水ビット30と真空配管との連通を遮断する）。そこで本
発明では、主管路32内の圧力が一定以下に低下したと
き、主管路32内に空気を導いて圧力低下を防止し、以て
エジェクター22を作動し続けるようにしている。これは
従来の真空発生装置におけるエジェクター22の間歇作動
の停止時間15〜20時間を０〜８時間に減少し、以て真空
発生装置12の槽14内の汚水16を十分還流させ、空気溶解
を促進するためである。Generally, in a vacuum sewage treatment system, generation of sewage concentrates in a predetermined time zone of a day. Conventionally, the vacuum generator operates during generation and supply of sewage, and stops operating when no sewage is generated. Specifically, when the inflow of sewage into the sewage bit 30 is stopped and the amount of sewage stored in the sewage bit 30 is reduced to a certain value or less, the operation is stopped based on a decrease in the pressure in the main pipeline 32 ( When the water level of the sewage in the sewage bit 30 drops, the valve 31 closes to shut off the communication between the sewage bit 30 and the vacuum pipe). Therefore, in the present invention, when the pressure in the main conduit 32 drops below a certain level, air is guided into the main conduit 32 to prevent the pressure from dropping, and the ejector 22 is kept operating. This reduces the intermittent operation stop time of the ejector 22 of the conventional vacuum generator from 15 to 20 hours to 0 to 8 hours, thereby sufficiently refluxing the waste water 16 in the tank 14 of the vacuum generator 12 and dissolving the air. To promote.
本例の方法の特徴は、汚水処理装置10の前段、即ち上
流側にエジェクター方式の真空発生装置12を設けるとと
もに、その真空発生装置12の槽14の容量を大きくして、
内部の汚水16の滞留時間を６〜19時間と長く設定したこ
とにある。The feature of the method of the present embodiment is that the ejector-type vacuum generator 12 is provided upstream of the sewage treatment apparatus 10, that is, upstream, and the capacity of the tank 14 of the vacuum generator 12 is increased.
This is because the residence time of the internal wastewater 16 is set to be as long as 6 to 19 hours.
上記エジェクター式の真空発生装置12では、エジェク
ター22による汚水16及び空気の噴出によって汚水16中へ
の空気の溶解作用が効果的に行われ、しかもこの真空発
生装置12では、汚水16が長時間滞留することとなるた
め、汚水16自身の中に存在するバクテリアの活性度が高
まるとともに、汚水16がかかるバクテリアの分解作用を
長時間受けることとなるため、汚水16が槽14内に滞留し
ている間に前処理，前浄化が行われ、かかる前浄化処理
を受けた状態で汚水16が本来の汚水処理装置10へと送ら
れる。In the above-described ejector-type vacuum generator 12, the dissolution of air into the wastewater 16 is effectively performed by the ejection of the wastewater 16 and the air by the ejector 22, and the wastewater 16 stays in the vacuum generator 12 for a long time. As a result, the activity of the bacteria existing in the sewage 16 itself increases, and the sewage 16 is subjected to the decomposing action of the bacteria for a long time, so that the sewage 16 stays in the tank 14. In the meantime, pretreatment and prepurification are performed, and the sewage 16 is sent to the original sewage treatment apparatus 10 in a state where the pretreatment is performed.
また真空発生装置12の槽14は容量が大きく、汚水16の
滞留時間が長いことから、従来の汚水処理装置における
流量調整槽としての機能も併せ持つこととなり、従って
汚水処理装置10における流量調整槽を省略することが可
能となり、汚水処理装置10を小型化することが可能とな
る。In addition, since the tank 14 of the vacuum generator 12 has a large capacity and a long residence time of the sewage 16, the tank 14 also has a function as a flow control tank in the conventional sewage treatment apparatus. This can be omitted, and the size of the sewage treatment apparatus 10 can be reduced.
因みに本例のシステムにより汚水の消化処理を行な
い、真空発生装置12における汚水16の水質を調査したと
ころ、第１表の如き結果を得た。Incidentally, sewage digestion treatment was performed by the system of the present example, and the water quality of the sewage 16 in the vacuum generator 12 was investigated. The results shown in Table 1 were obtained.
この結果に表われているように、本発明に従えば真空
発生装置12の槽14内において夾雑物が少なくなり、BOD,
CODも低下し、汚物が分解されて汚水16の浄化が進んで
いることが認められる。 As shown in these results, according to the present invention, impurities are reduced in the tank 14 of the vacuum generator 12, and BOD,
It is also recognized that the COD has been reduced and the waste has been decomposed to purify the wastewater 16.
以上本発明の実施例を詳述したが、本発明はその他の
態様においても実施可能である。Although the embodiment of the present invention has been described in detail, the present invention can be implemented in other aspects.
例えば本発明は、処理すべき汚水として食品加工排水
等を含む汚水等、有機系の汚水であれば何れに対しても
適用が可能であるなど、本発明はその主旨を逸脱しない
範囲において、当業者の知識に基づき様々な変更を加え
た態様で実施可能である。For example, the present invention can be applied to any organic sewage such as sewage including food processing wastewater as sewage to be treated, and the present invention is applicable within a range not departing from the gist thereof. The present invention can be implemented in various modified forms based on the knowledge of the trader.
第１図は本発明の一実施例である真空式汚水処理方式を
系統的に示した図である。 10:汚水処理装置 12:真空発生装置 14:槽 16:汚水 22:エジェクターFIG. 1 is a view systematically showing a vacuum sewage treatment system according to an embodiment of the present invention. 10: Sewage treatment equipment 12: Vacuum generator 14: Tank 16: Sewage 22: Ejector
フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) C02F 3/12 C02F 3/22 C02F 1/00Continuation of front page (58) Field surveyed (Int. Cl. 6 , DB name) C02F 3/12 C02F 3/22 C02F 1/00
Claims (1)
連絡し、該真空発生装置にて発生させた真空吸引力によ
り該汚水源からの汚水を該真空吸引管路を通じて該真空
発生装置に収集した上、下流側の汚水処理装置に送出し
て汚水の浄化処理を行うに際し 該真空発生装置として、槽内の汚水をエジェクターによ
り噴出及び循環させることによって真空を発生させる装
置を用い、且つ該真空発生装置における汚水の滞留時間
を６〜19時間に設定したことを特徴とする汚水の処理方
法。1. A vacuum generator and a sewage source are connected by a vacuum suction line, and sewage from the sewage source is generated by the vacuum suction line through the vacuum suction line by a vacuum suction force generated by the vacuum generator. In collecting the water in the apparatus and sending it to the downstream sewage treatment apparatus to purify the sewage, a device that generates a vacuum by ejecting and circulating the sewage in the tank by an ejector is used as the vacuum generator, A method for treating wastewater, wherein the residence time of the wastewater in the vacuum generator is set to 6 to 19 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1261003A JP2792009B2 (en) | 1989-10-05 | 1989-10-05 | Sewage treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1261003A JP2792009B2 (en) | 1989-10-05 | 1989-10-05 | Sewage treatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03123696A JPH03123696A (en) | 1991-05-27 |
| JP2792009B2 true JP2792009B2 (en) | 1998-08-27 |
Family
ID=17355709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1261003A Expired - Lifetime JP2792009B2 (en) | 1989-10-05 | 1989-10-05 | Sewage treatment method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2792009B2 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS592880Y2 (en) * | 1978-10-16 | 1984-01-26 | 荏原インフイルコ株式会社 | Microbial reactor |
| JPS55121893A (en) * | 1979-03-12 | 1980-09-19 | Kubota Ltd | Water treating apparatus |
| JPH01124299U (en) * | 1988-02-15 | 1989-08-24 |
-
1989
- 1989-10-05 JP JP1261003A patent/JP2792009B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03123696A (en) | 1991-05-27 |
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