JPH0369595B2 - - Google Patents
Info
- Publication number
- JPH0369595B2 JPH0369595B2 JP1325305A JP32530589A JPH0369595B2 JP H0369595 B2 JPH0369595 B2 JP H0369595B2 JP 1325305 A JP1325305 A JP 1325305A JP 32530589 A JP32530589 A JP 32530589A JP H0369595 B2 JPH0369595 B2 JP H0369595B2
- Authority
- JP
- Japan
- Prior art keywords
- sewage treatment
- treatment tank
- foam
- sewage
- defoaming
- 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
- 239000010865 sewage Substances 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 16
- 239000006260 foam Substances 0.000 claims description 14
- 239000004745 nonwoven fabric Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000005273 aeration Methods 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 4
- 238000007664 blowing Methods 0.000 claims 1
- 239000000428 dust Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 241000237502 Ostreidae Species 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 235000020636 oyster Nutrition 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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
- Biological Treatment Of Waste Water (AREA)
- Degasification And Air Bubble Elimination (AREA)
- Removal Of Floating Material (AREA)
Description
【発明の詳細な説明】
《産業上の利用分野》
本発明は汚水処理槽内に発生する泡の消泡方法
に関し、特に浮上接触濾材を用いたバツキ処理施
設に用いる消泡方法に関する。DETAILED DESCRIPTION OF THE INVENTION <<Industrial Application Field>> The present invention relates to a method for defoaming foam generated in a sewage treatment tank, and particularly to a defoaming method used in a dust treatment facility using a floating contact filter medium.
《従来の技術》
バツキによつて汚水を処理する施設は既に多々
知られており、これらの中でも特に、浮上接触濾
材を用いる方法は微生物による浄化作用をも利用
するものであり優れている（例えば特公昭47−
44953号及び同63−119号）。《Prior art》 Many facilities are already known that treat sewage by sewage, and among these, methods using floating contact filter media are particularly excellent because they also utilize the purifying action of microorganisms (e.g. Special Public Service 1977-
44953 and 63-119).
一方、従来から汚水のバツキ処理施設において
発生する泡の除去方法としては、汚水処理槽の水
面付近に開口せしめた気液吸込管により、発生し
た泡を吸引し除去する方法又は、汚水処理槽の水
面上に散水装置を配して水面に散水を行うことに
より泡を消泡する方法によつていた。しかしなが
ら前者の方法は泡を移動させるのみであるので本
質的な解決策とはならず、結局消泡処理施設を別
途必要とするという不都合がある一方、後者の方
法では、気泡の大きな泡に対しては効果があるも
のの気泡の小さな泡に対しては効果が少なく、完
全に消泡を行うことは困難である上維持管理費が
高くつくという欠点があつた。 On the other hand, conventional methods for removing foam generated in sewage treatment facilities include a method in which the generated foam is sucked and removed through a gas-liquid suction pipe opened near the water surface of the sewage treatment tank, or The method used was to dispose of foam by placing a water sprinkler on the water surface and spraying water on the water surface. However, since the former method only moves the bubbles, it is not an essential solution and ultimately requires a separate anti-foam treatment facility. Although it is effective against small bubbles, it is difficult to eliminate foam completely and has the drawbacks of high maintenance and management costs.
《発明が解決しようとする課題》
本発明者等は上記の欠点を解決すべく鋭意検討
を重ねた結果、浮上接触濾材からなる濾床上に不
織布を載置することにより、特にその他の消泡装
置を用いなくてもバツキ槽内で発生する大小の泡
を容易に消泡することができることを見出し本発
明に到達した。<<Problems to be Solved by the Invention>> As a result of intensive studies in order to solve the above-mentioned drawbacks, the present inventors have found that by placing a nonwoven fabric on a filter bed made of a floating contact filter medium, it is possible to solve the problem, especially in other defoaming devices. The present invention was achieved by discovering that large and small bubbles generated in a bubble tank can be easily defoamed without using a bubble.
従つて、本発明の目的は設置及び維持管理が容
易で、特にバツキ槽に対して有効な消泡方法を提
供することにある。 Accordingly, an object of the present invention is to provide a defoaming method that is easy to install and maintain, and is particularly effective for use in dust tanks.
《課題を解決するための手段》
本発明の上記の目的は、汚水処理槽内に比重１
以下の浮上接触濾材からなる濾床を形成せしめる
と共に該濾床上に不織布を載置し、汚水処理槽内
に配置せしめた散気装置を通して、汚水処理槽底
部から空気を吹き込むことにより汚水面上に発生
する泡を消去することを特徴とする汚水処理槽の
泡の消泡方法により達成された。<Means for Solving the Problems> The above object of the present invention is to
A filter bed made of the following floating contact filter media is formed, a nonwoven fabric is placed on the filter bed, and air is blown from the bottom of the sewage treatment tank through an aeration device placed in the sewage treatment tank to form a filter bed on the sewage surface. This was achieved by a method of defoaming foam in a sewage treatment tank, which is characterized by eliminating the foam generated.
以下本発明を実施例に基づいて詳しく説明す
る。 The present invention will be explained in detail below based on examples.
第１図は、本発明の汚水処理槽の泡の消泡方法
を示す断面図である。 FIG. 1 is a sectional view showing the method for defoaming foam in a sewage treatment tank according to the present invention.
図中、符号１は汚水処理槽３の汚水面に形成せ
しめた濾床であり、比重１以下の浮上接触濾材２
により形成せしめる。本発明においては、浮上接
触濾材２として、例えば比重１以下の合成樹脂、
空かん、プラスチツク成型品、カキガラ、木片等
を適当な大きさに破砕にしたもの及び、これらの
適当量をアミの中に収容し比重を0.9前後とした
ものの中から適宜選択して使用することができ
る。 In the figure, reference numeral 1 is a filter bed formed on the sewage surface of the sewage treatment tank 3, and a floating contact filter medium 2 with a specific gravity of 1 or less
Formed by In the present invention, as the floating contact filter medium 2, for example, a synthetic resin with a specific gravity of 1 or less,
Select and use as appropriate from empty cans, plastic molded products, oyster shells, wood chips, etc. crushed into appropriate sizes, and those that contain appropriate amounts of these in a container with a specific gravity of around 0.9. I can do it.
符号４は浮上接触濾材２からなる濾床１上に載
置せしめた不織布である。本発明に使用する不織
布４は公知の材料の中から適宜選択して使用する
ことができる。 Reference numeral 4 denotes a nonwoven fabric placed on the filter bed 1 made of the floating contact filter medium 2. The nonwoven fabric 4 used in the present invention can be appropriately selected from known materials.
符号５は散気装置である。散気装置５は、汚水
中に酸素を供給することにより、汚水を好気性に
し浄化する。この場合、散気に際する空気の量、
速度又は角度等を調整して、浮上接触濾材２を図
示の如く汚水処理槽の片側に収斂せしめた場合に
は、散気装置５を設けた部分に解放水面を形成せ
しめることができるので維持管理作業を良好なも
のとすることができる。 Reference numeral 5 is a diffuser. The air diffuser 5 purifies the wastewater by making it aerobic by supplying oxygen to the wastewater. In this case, the amount of air during aeration,
If the floating contact filter medium 2 is converged on one side of the sewage treatment tank by adjusting the speed or angle, etc., as shown in the figure, an open water surface can be formed in the area where the air diffuser 5 is installed, making maintenance management easier. The work can be done in good condition.
《作 用》
汚水や汚泥が分解されて生じた有機物等は、浮
上接触濾材２の表面に付着し、汚水や汚泥の浄化
に有効な微生物等が繁殖するので、浄化の効率は
極めて良好となる。又、浄化に際して発生する分
解ガスや散気した空気によつて発生する泡は、不
織布中を通過する間に容易に消泡される。《Function》 Organic matter generated by the decomposition of sewage and sludge adheres to the surface of the floating contact filter medium 2, and microorganisms effective in purifying sewage and sludge proliferate, resulting in extremely high purification efficiency. . Further, bubbles generated by decomposed gas or diffused air generated during purification are easily defoamed while passing through the nonwoven fabric.
《発明の効果》
以上詳述した如く、本発明の汚水処理槽の泡の
消泡方法は浮上接触濾材上に不織布を載置するの
みであるので、従来の汚水処理方法において使用
していた消泡方法よりも安価且つ、設置及び維持
管理が極めて容易である。<<Effects of the Invention>> As detailed above, the method for defoaming foam in a sewage treatment tank according to the present invention only involves placing a nonwoven fabric on a floating contact filter medium, which eliminates the defoaming method used in conventional sewage treatment methods. It is cheaper than the foam method and much easier to install and maintain.
第１図は本発明の汚水処理槽の泡の消泡方法を
しめる断面図である。
１……濾床、２……浮上接触濾材、３……汚水
処理槽、４……不織布、５……散気装置。
FIG. 1 is a sectional view showing the method for defoaming foam in a sewage treatment tank according to the present invention. 1...Filter bed, 2...Floating contact filter medium, 3...Sewage treatment tank, 4...Nonwoven fabric, 5...Aeration device.
Claims (1)
らなる濾床を形成せしめると共に該濾床上に不織
布を載置し、汚水処理槽内に配置せしめた散気装
置を通して、汚水処理槽底部から空気を吹き込む
ことにより汚水面上に発生する泡を消去すること
を特徴とする汚水処理槽の泡の消泡方法。 ２ 汚水処理槽内の汚水を還流せしめ、以つて浮
上接触濾材を汚水処理槽の一方の壁に収斂せしめ
る如く空気を吹き込む、特許請求の範囲第１項に
記載の汚水処理槽の泡の消泡方法。[Scope of Claims] 1. A filter bed made of a floating contact filter medium having a specific gravity of 1 or less is formed in a sewage treatment tank, and a nonwoven fabric is placed on the filter bed, and the filter bed is passed through an aeration device arranged in the sewage treatment tank, A method for defoaming foam in a sewage treatment tank, characterized in that foam generated on the surface of sewage water is eliminated by blowing air from the bottom of the sewage treatment tank. 2 Defoaming of foam in a sewage treatment tank according to claim 1, which causes sewage in the sewage treatment tank to flow back and blows air so as to cause the floating contact filter medium to converge on one wall of the sewage treatment tank. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1325305A JPH03143597A (en) | 1989-12-15 | 1989-12-15 | Defoaming method for sewage treating tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1325305A JPH03143597A (en) | 1989-12-15 | 1989-12-15 | Defoaming method for sewage treating tank |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8224881A Division JPS57197089A (en) | 1981-05-29 | 1981-05-29 | Purification of sewage by utilizing natural ecosystem stnthetically in specific water level |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03143597A JPH03143597A (en) | 1991-06-19 |
| JPH0369595B2 true JPH0369595B2 (en) | 1991-11-01 |
Family
ID=18175335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1325305A Granted JPH03143597A (en) | 1989-12-15 | 1989-12-15 | Defoaming method for sewage treating tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03143597A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5492621B2 (en) * | 2010-03-23 | 2014-05-14 | 中国電力株式会社 | Nitrification tank, wastewater treatment system |
-
1989
- 1989-12-15 JP JP1325305A patent/JPH03143597A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03143597A (en) | 1991-06-19 |
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