JPS6253212B2 - - Google Patents
Info
- Publication number
- JPS6253212B2 JPS6253212B2 JP1145887A JP1145887A JPS6253212B2 JP S6253212 B2 JPS6253212 B2 JP S6253212B2 JP 1145887 A JP1145887 A JP 1145887A JP 1145887 A JP1145887 A JP 1145887A JP S6253212 B2 JPS6253212 B2 JP S6253212B2
- Authority
- JP
- Japan
- Prior art keywords
- tank
- foam
- nitrification
- gas
- foam layer
- 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
Links
- 238000000034 method Methods 0.000 claims description 34
- 239000006260 foam Substances 0.000 claims description 27
- 238000005273 aeration Methods 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 230000001877 deodorizing effect Effects 0.000 claims description 13
- 239000010865 sewage Substances 0.000 claims description 8
- 238000007664 blowing Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 23
- 239000010802 sludge Substances 0.000 description 17
- 239000010800 human waste Substances 0.000 description 13
- 239000002351 wastewater Substances 0.000 description 11
- 239000007788 liquid Substances 0.000 description 9
- 238000010790 dilution Methods 0.000 description 6
- 239000012895 dilution Substances 0.000 description 6
- 241000894006 Bacteria Species 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000004332 deodorization Methods 0.000 description 4
- 238000005187 foaming Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 2
- 238000006065 biodegradation reaction Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000813 microbial effect Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- JVMRPSJZNHXORP-UHFFFAOYSA-N ON=O.ON=O.ON=O.N Chemical compound ON=O.ON=O.ON=O.N JVMRPSJZNHXORP-UHFFFAOYSA-N 0.000 description 1
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 238000005276 aerator Methods 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000000834 fixative Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 230000001546 nitrifying effect Effects 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 238000003756 stirring Methods 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- 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
- Treating Waste Gases (AREA)
- Activated Sludge Processes (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、有機性汚水（し尿、し尿浄化槽汚
泥、下水、廃水、ゴミ浸出汚水、家畜の排出汚水
等）から発生する悪臭ガスを生物処理工程を含む
有機性汚水の処理施設を利用して脱臭する方法に
関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides biological treatment for malodorous gases generated from organic wastewater (human waste, human waste septic tank sludge, sewage, wastewater, garbage leaching wastewater, livestock discharge wastewater, etc.). The present invention relates to a method for deodorizing organic wastewater using a treatment facility that includes a process.
一般に有機性汚水から発散される悪臭ガスは、
耐えがたい臭気を発生し、かなり広範囲にわたつ
て生活環境を悪化させている。このため何らかの
手段によつて、発散する臭気成分を除去する必要
がある。
Generally, the foul-smelling gas emitted from organic wastewater is
It generates an intolerable odor and deteriorates the living environment over a fairly wide area. Therefore, it is necessary to remove the emitted odor components by some means.
従来、これらの悪臭成分を除去する方法として
は、酸、アルカリ剤による洗浄法（化学的吸収
法）、活性炭などによる物理化学的吸着法、
オゾン、次亜塩素酸などによる化学的酸化法、
イオン交換法、燃焼分解法、生物分解法があ
る。 Conventionally, methods for removing these malodorous components include cleaning methods using acids or alkaline agents (chemical absorption method), physicochemical adsorption methods using activated carbon, etc.
Chemical oxidation method using ozone, hypochlorous acid, etc.
There are ion exchange methods, combustion decomposition methods, and biological decomposition methods.
しかしながら、これらの脱臭方法を総括的に評
価すると次のような重大な欠陥があり、その技術
的改善が要望されている。吸収剤、吸着剤、酸
化剤などの薬品を多量に必要とする。吸収剤キ
ヤリヤーとして多量の水を必要とする。物理吸
着、化学的固定による脱臭法は、吸着剤、固定剤
の再生賦活に多額の費用を要するだけでなく、脱
着された悪臭物質の処理が問題になる。また、
生物分解法は未だ提案の段階にあり、技術的に改
善の余地がある。以上を要約すると、従来の脱臭
技術は省資源、省エネルギー的でなく、生物分解
法は脱臭技術としてシステム的に充分完成されて
いないと言わざるを得ない。
However, a comprehensive evaluation of these deodorizing methods reveals the following serious deficiencies, and technical improvements are desired. Requires large amounts of chemicals such as absorbents, adsorbents, and oxidizing agents. Requires large amounts of water as absorbent carrier. Deodorizing methods using physical adsorption or chemical fixation not only require a large amount of cost to reactivate the adsorbent and fixative, but also pose problems in processing the desorbed malodorous substances. Also,
Biodegradation methods are still at the proposal stage and there is room for technical improvement. To summarize the above, it must be said that conventional deodorizing techniques are not resource-saving or energy-saving, and that biodegradation methods are not systemically complete as a deodorizing technique.
本発明は、上記従来法の問題点を解消し、有機
性汚水から発生する悪臭ガスを該有機性汚水処理
システムを利用して極めて合理的に脱臭できる方
法を提供することを目的とするものである。
The purpose of the present invention is to solve the problems of the above-mentioned conventional methods and to provide a method that can extremely rationally deodorize malodorous gases generated from organic sewage using the organic sewage treatment system. be.
すなわち、本発明は、有機性汚水処理施設から
発生した悪臭ガスを、有機性汚水の好気性生物処
理用の曝気槽水面上に形成された泡沫と接触させ
る際に、悪臭ガスを前記曝気槽水面下に散気する
ことなく前記泡沫の層に直接吹込み、悪臭ガス成
分を泡沫に吸着せしめることを特徴とする悪臭ガ
スの脱臭方法である。
That is, in the present invention, when bringing malodorous gas generated from an organic sewage treatment facility into contact with foam formed on the water surface of an aeration tank for aerobic biological treatment of organic sewage, the malodorous gas is brought into contact with the water surface of the aeration tank. This method of deodorizing malodorous gas is characterized in that the foam is blown directly into the foam layer without being diffused downward, and the malodorous gas components are adsorbed by the foam.
以下、図面により本発明の各実施態様を説明す
る。 Hereinafter, each embodiment of the present invention will be explained with reference to the drawings.
第１図において、し尿などの有機性汚水１は、
活性汚泥処理工程の曝気槽２に流入し、微生物の
活動によつて、BOD成分などが除去されたの
ち、沈殿池、遠心分離機などの固液分離工程３に
て活性汚泥が分離され、処理水４と濃縮汚泥５に
分離され、一部は返送汚泥６として曝気槽２に返
送され、他部は余剰汚泥７として処分される。曝
気槽２の水面８の上部には、散気装置１０による
曝気操作の結果発泡が起こり、泡沫層６が形成さ
れる。 In Figure 1, organic wastewater 1 such as human waste is
The activated sludge flows into the aeration tank 2 of the activated sludge treatment process, and after BOD components are removed by microbial activity, the activated sludge is separated in the solid-liquid separation process 3 using a settling tank, centrifuge, etc., and then processed. It is separated into water 4 and thickened sludge 5, a part of which is returned to the aeration tank 2 as return sludge 6, and the other part is disposed of as surplus sludge 7. Above the water surface 8 of the aeration tank 2, foaming occurs as a result of the aeration operation by the aeration device 10, and a foam layer 6 is formed.
この発泡現象は、し尿を無希釈（河川水、地下
水などで希釈しないことを意味する）により、又
は低倍率希釈により活性汚泥処理する場合、ま
た、曝気槽２における曝気空気量が多いほど激し
くなる。し尿などBOD10000〜15000mg／とい
う高濃度有機性汚水を生物処理するには、当然曝
気空気量が多量に必要になるので、激しい発泡を
起こす。 This bubbling phenomenon becomes more severe when human waste is treated with activated sludge without dilution (meaning not diluted with river water, groundwater, etc.) or with low dilution ratio, and when the amount of aerated air in the aeration tank 2 is large. . Biological treatment of high-concentration organic wastewater, such as human waste with a BOD of 10,000 to 15,000 mg, naturally requires a large amount of aerated air, which causes intense foaming.
この発泡を放置すると、曝気槽２外に泡があふ
れだし、風で飛散したり、泡に付着した活性汚泥
が泡とともに曝気槽２外に逃げるという重大なト
ラブルを招くため、従来は、消泡剤を注入した
り、し尿を多量の希釈水で希釈しなければならな
かつた。 If this foaming is left untreated, the foam will overflow outside the aeration tank 2 and cause serious problems such as being blown away by the wind or activated sludge adhering to the foam escaping outside the aeration tank 2 together with the foam. They had to inject drugs or dilute human waste with large amounts of diluting water.
そこで本発明では、散気装置１０′から悪臭ガ
ス１１を泡沫層９に直接供給してこれと接触させ
て悪臭成分を吸収せしめる。 Therefore, in the present invention, the malodorous gas 11 is directly supplied from the air diffuser 10' to the foam layer 9, and is brought into contact with the foam layer 9 to absorb malodorous components.
図中、９′は泡沫、１１′は処理ガス、１２は曝
気用のブロワ、１２′は空気である。 In the figure, 9' is foam, 11' is a processing gas, 12 is an aeration blower, and 12' is air.
次に第２図例は、悪臭ガス１１を泡沫層９と直
接接触せしめて脱臭する点では第１図例と同じで
あるが、前記生物処理工程を硝化工程、脱窒素工
程を含む生物学的硝化脱窒素法によつて行なうも
のである。 Next, the example in Figure 2 is the same as the example in Figure 1 in that the malodorous gas 11 is brought into direct contact with the foam layer 9 to deodorize, but the biological treatment process is replaced by a biological treatment process including a nitrification process and a denitrification process. This is done using the nitrification and denitrification method.
すなわち、第１脱窒素槽１３に有機性汚水１
と、硝化槽（曝気槽）１４から循環・返送される
硝化液１６が流入し、該硝化液１６中のNOx−
Ｎ（亜硝酸性窒素、硝酸性窒素をこのように略記
する）が、有機性汚水１中のBOD成分を脱窒素
菌の有機炭素源として利用されながらN2ガスに
還元され、排気管１７から系外へ排出される。 That is, organic wastewater 1 is placed in the first denitrification tank 13.
Then, the nitrification liquid 16 that is circulated and returned from the nitrification tank (aeration tank) 14 flows in, and the NOx in the nitrification liquid 16 is
N (nitrite nitrogen, nitrate nitrogen is abbreviated as this) is reduced to N2 gas while the BOD component in organic wastewater 1 is used as an organic carbon source for denitrification bacteria, and is discharged from the exhaust pipe 17. Expelled from the system.
有機性汚水１として、無希釈し尿又はし尿を低
倍率で希釈したものを供給して処理した場合、硝
化槽１４の水面８上に激しい発泡が起き、通常
0.5〜1.5ｍ程度の高さを有する泡沫層９が形成さ
れる。 When undiluted human waste or human waste diluted at a low ratio is supplied as organic wastewater 1 for treatment, intense foaming occurs on the water surface 8 of the nitrification tank 14 and
A foam layer 9 having a height of about 0.5 to 1.5 m is formed.
しかして、硝化槽１４からの流出液は第２脱窒
素槽１５に流入し、第１脱窒素槽１３で除去され
なかつたNOx−ＮがN2ガスに還元され、排気管
１７′から系外へ排出される。 The effluent from the nitrification tank 14 flows into the second denitrification tank 15, and the NOx-N that was not removed in the first denitrification tank 13 is reduced to N2 gas, which is then discharged from the system through the exhaust pipe 17'. is discharged to.
さらに、第２脱窒素槽１５からの流出液は遠心
分離機などの固液分離工程３に流入し、処理水４
と濃縮汚泥５に分離され、濃縮汚泥５の大部分は
返送汚泥６として第１脱窒素槽１３に返送され、
一部は余剰汚泥７として、脱水工程（図示せず）
へ移送される。なお図中、１８は循環ポンプであ
る。 Furthermore, the effluent from the second denitrification tank 15 flows into a solid-liquid separation process 3 such as a centrifuge, and the treated water 4
and concentrated sludge 5, and most of the concentrated sludge 5 is returned to the first denitrification tank 13 as return sludge 6.
A portion is used as surplus sludge 7 during the dewatering process (not shown).
will be transferred to. In addition, in the figure, 18 is a circulation pump.
前記第１図例及び第２図例のように、曝気槽２
又は１４の水面上に泡沫層９を形成させ、これを
吸収媒体として使用して脱臭する場合、泡沫層９
の高さは曝気用ガスの供給量が一定の場合、し尿
の希釈倍率と逆比例関係にあり、無希釈処理にお
いて最も高く、したがつて最も脱臭効果が良い
が、希釈倍率が５よりも大であると泡沫層９の高
さは非常に低くなり脱臭効果が不充分になること
もあるので、希釈倍率は一般的に０〜５の範囲が
好ましい。また、泡沫層９の高さは上記のように
高い程好ましいが、0.5ｍ以上あれば効果的な脱
臭を行なうことができる。 As in the example in FIG. 1 and the example in FIG. 2, the aeration tank 2
Or, if the foam layer 9 is formed on the water surface of 14 and used as an absorption medium to deodorize, the foam layer 9
When the supply amount of aeration gas is constant, the height of is inversely proportional to the dilution rate of human waste, and is highest in non-dilution treatment, and therefore has the best deodorizing effect, but when the dilution rate is higher than 5. In this case, the height of the foam layer 9 may become very low and the deodorizing effect may become insufficient, so the dilution ratio is generally preferably in the range of 0 to 5. Further, as mentioned above, the height of the foam layer 9 is preferably as high as possible, but if it is 0.5 m or more, effective deodorization can be performed.
次に、上記各実施態様における作用・効果につ
いて述べる。 Next, the functions and effects of each of the above embodiments will be described.
(1) 第１図例及び第２図例の場合。(1) In the case of the example in Figure 1 and the example in Figure 2.
泡沫層に悪臭ガスを直接接触させるようにす
れば悪臭ガス送風機の吐出圧力が低くてもよい
ため送風機の動力が小さくてすむ。 If the foul-smelling gas is brought into direct contact with the foam layer, the discharge pressure of the foul-smelling gas blower may be low, so the power of the blower may be small.
(2) 第２図例の場合。(2) In the case of the example in Figure 2.
硝化菌、脱窒素菌を含有する微生物スラリを
悪臭成分の吸収媒体とするので、含窒素系悪臭
成分含有ガスの脱臭が非常に効果的に行なわれ
る。また、生物学的硝化脱窒素プロセス内で悪
臭成分資化菌を循環させるようにした結果、悪
臭成分資化菌の悪臭成分分解活性が高められ
る。次に本発明の実施例について記す。 Since the microbial slurry containing nitrifying bacteria and denitrifying bacteria is used as an absorption medium for malodorous components, the gas containing nitrogen-containing malodorous components is very effectively deodorized. In addition, as a result of circulating the malodor component assimilating bacteria within the biological nitrification and denitrification process, the malodor component decomposition activity of the malodor component assimilating bacteria is increased. Next, examples of the present invention will be described.
第２図に示した生物学的硝化脱窒素プロセス
（硝化液循環型）によつて、し尿を処理量10Kl／
日で無希釈処理した。運転条件は下記の如く設定
した。
Through the biological nitrification and denitrification process (nitrification liquid circulation type) shown in Figure 2, human waste can be processed at a processing rate of 10 Kl/
It was processed undiluted for 1 day. The operating conditions were set as follows.
１ 第１脱窒素槽容積……30m2
２ 硝化兼脱臭槽（硝化槽）容積……50m3
３ 第２脱窒素槽容積……30m3
４ MLVSS……15000〜2000mg／
５ 硝化槽の曝気方法……水中撹拌型エアレータ
使用
６ 泡沫層高さ……1.5ｍ
７ 固液分離方法……遠心濃縮機（無薬注）によ
る
８ 硝化液循環量……200m3／日
上記硝化槽に、し尿投入・貯留槽、脱水機室、
汚泥乾燥機から排出される悪臭ガスの混合ガス
（臭気濃度50000〜70000）を風量6Nm3／minで散
気装置１０′から直接泡沫層９に送給した。1 Volume of the 1st denitrification tank...30m 2 2 Volume of the nitrification/deodorization tank (nitrification tank)...50m 3 3 Volume of the 2nd denitrification tank...30m 3 4 MLVSS...15000~2000mg/ 5 Aeration method for the nitrification tank ...Use of submersible stirring aerator 6 Foam layer height...1.5m 7 Solid-liquid separation method...Centrifugal concentrator (chemical-free injection) 8 Nitrification liquid circulation rate...200m 3 /day Human waste is added to the above nitrification tank・Storage tank, dehydrator room,
A mixed gas of malodorous gas (odor concentration 50,000 to 70,000) discharged from the sludge dryer was directly supplied to the foam layer 9 from the aeration device 10' at an air flow rate of 6 Nm 3 /min.
この状態で１ケ月間運転した結果、硝化槽上部
の泡沫層から排出される排ガスの臭気濃度を測定
した（三点比較式臭い袋法による）ところ400〜
600と極めて効果的に脱臭されていた。比較のた
めに、し尿を10倍に希釈して前記の生物学的硝化
脱窒素処理を行なつたところ、泡沫層は５cm程度
して形成されず、排ガスの臭気濃度は1000〜3000
であり脱臭効果は劣つていた。 As a result of operating in this condition for one month, the odor concentration of the exhaust gas discharged from the foam layer at the top of the nitrification tank was measured (using the three-point comparison odor bag method), and it was 400~
600 and was extremely effective at deodorizing. For comparison, when human waste was diluted 10 times and subjected to the biological nitrification and denitrification treatment described above, a foam layer of about 5 cm was not formed, and the odor concentration of exhaust gas was 1000 to 3000.
Therefore, the deodorizing effect was inferior.
以上述べたように本発明は、し尿系汚水の生物
処理工程と悪臭ガスの脱臭処理工程を合理的に統
合したものであるから、プロセス構成が簡単にな
り、特別の脱臭処理装置が不要となる結果、全体
の処理装置の建設費が著しく低減できるうえ、従
来必要であつた脱臭用薬剤（酸、アルカリ液、活
性炭、オゾン、次亜塩素酸ソーダなど）あるは重
油などの燃料が一切不要となり、省資源、省エネ
ルギー的な脱臭処理が行なえ、しかも装置の維持
管理も簡便であるなど多大の利益をもたらすもの
である。
As described above, the present invention rationally integrates the biological treatment process for human waste and the deodorization process for malodorous gas, so the process configuration is simplified and special deodorization equipment is not required. As a result, the construction cost of the entire treatment equipment can be significantly reduced, and the deodorizing agents (acid, alkaline solution, activated carbon, ozone, sodium hypochlorite, etc.) or fuel such as heavy oil that were previously required are no longer required. The deodorizing process can be performed in a resource-saving and energy-saving manner, and the equipment is easy to maintain and manage, which brings many benefits.
第１図、第２図は本発明の実施態様を示す系統
説明図である。
１……有機性汚水、２……曝気槽、３……固液
分離工程、４……処理水、５……濃縮汚泥、６…
…返送汚泥、７……余剰汚泥、８……水面、９…
…泡沫層、９′……泡沫、１０，１０′……散気装
置、１１……悪臭ガス、１１′……処理ガス、１
２……ブロワ、１２′……空気、１３……第１脱
窒素槽、１４……硝化槽、１５……第２脱窒素
槽、１６……硝化液、１７，１７′……排気管、
１８……循環ポンプ。
FIG. 1 and FIG. 2 are system explanatory diagrams showing embodiments of the present invention. 1... Organic sewage, 2... Aeration tank, 3... Solid-liquid separation process, 4... Treated water, 5... Thickened sludge, 6...
...Return sludge, 7... Surplus sludge, 8... Water surface, 9...
... Foam layer, 9'... Foam, 10, 10'... Diffuser, 11... Malodorous gas, 11'... Processing gas, 1
2... Blower, 12'... Air, 13... First denitrification tank, 14... Nitrification tank, 15... Second denitrification tank, 16... Nitrification liquid, 17, 17'... Exhaust pipe,
18...Circulation pump.
Claims (1)
を、有機性汚水の好気性生物処理用の曝気槽水面
上に形成された泡沫と接触させる際に、悪臭ガス
を前記曝気槽水面下に散気することなく前記泡沫
の層に直接吹込み、悪臭ガス成分を泡沫に吸着せ
しめることを特徴とする悪臭ガスの脱臭方法。1. When bringing malodorous gas generated from an organic sewage treatment facility into contact with foam formed on the water surface of an aeration tank for aerobic biological treatment of organic sewage, the malodorous gas is diffused below the water surface of the aeration tank. A method for deodorizing malodorous gas, which comprises blowing directly into the layer of foam to cause malodorous gas components to be adsorbed to the foam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62011458A JPS62176521A (en) | 1987-01-22 | 1987-01-22 | Method of deodorizing smelly gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62011458A JPS62176521A (en) | 1987-01-22 | 1987-01-22 | Method of deodorizing smelly gas |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6937281A Division JPS57184415A (en) | 1981-05-11 | 1981-05-11 | Method for deodorizing malodorous gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62176521A JPS62176521A (en) | 1987-08-03 |
| JPS6253212B2 true JPS6253212B2 (en) | 1987-11-09 |
Family
ID=11778651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62011458A Granted JPS62176521A (en) | 1987-01-22 | 1987-01-22 | Method of deodorizing smelly gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62176521A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69123720T2 (en) * | 1990-10-03 | 1997-07-10 | Kay Seven Co | SHAFT COUPLING |
-
1987
- 1987-01-22 JP JP62011458A patent/JPS62176521A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62176521A (en) | 1987-08-03 |
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