JP2017213492A - Sludge treatment equipment - Google Patents

Sludge treatment equipment Download PDF

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JP2017213492A
JP2017213492A JP2016107948A JP2016107948A JP2017213492A JP 2017213492 A JP2017213492 A JP 2017213492A JP 2016107948 A JP2016107948 A JP 2016107948A JP 2016107948 A JP2016107948 A JP 2016107948A JP 2017213492 A JP2017213492 A JP 2017213492A
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sludge
tank
biological reaction
reaction tank
methane gas
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暁 滝浪
Akira Takinami
暁 滝浪
真文 立田
Masafumi Tatsuta
真文 立田
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Aqua Techno Esco Jigyo Co Ltd
Toyama Prefectural University
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Aqua Techno Esco Jigyo Co Ltd
Toyama Prefectural University
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    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
    • 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
    • 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
    • Y02W10/20—Sludge processing
    • 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
    • Y02W10/30—Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy

Abstract

PROBLEM TO BE SOLVED: To provide sludge treatment equipment which is hardly affected by the environment and can efficiently treat sludge.SOLUTION: Sludge treatment equipment 1 comprises a biological reaction tank 20 in which organic substance in foul water flowing in through a preliminary settling tank 10 are treated by an activated-sludge process, a concentration tank 40 for concentrating the activated sludge formed in the biological reaction tank 20, a sludge reducing tank 50 for reducing the amount of the concentrated sludge flowing in from the concentration tank 40, and a covering material 60 that covers one of the biological reaction tank 20 and the sludge reducing tank 50, suppresses temperature drop of the covered tank and thus activates at least one of activated-sludge treatment in the biological reaction tank 20 and reduction treatment in the sludge reducing tank 50.SELECTED DRAWING: Figure 1

Description

本発明は、汚泥処理装置に関する。   The present invention relates to a sludge treatment apparatus.

一般的に、下水処理施設では、図３に示すように、有機物を含有する下水を生物反応槽２０における活性汚泥法により浄化している。生物反応槽２０で生じる汚泥の一部は汚泥分配槽３０、汚泥返送ライン７０を経由して生物反応槽２０に戻される一方、余剰汚泥は濃縮槽４０で濃縮され、脱水装置１１０で水分が除去される。このように排出される余剰汚泥は、産業廃棄物扱いとなり、焼却されたり埋め立てに利用されたりしている。   Generally, in a sewage treatment facility, as shown in FIG. 3, sewage containing organic matter is purified by an activated sludge method in a biological reaction tank 20. A part of the sludge generated in the biological reaction tank 20 is returned to the biological reaction tank 20 via the sludge distribution tank 30 and the sludge return line 70, while the excess sludge is concentrated in the concentration tank 40 and the water is removed by the dehydrator 110. Is done. Excess sludge discharged in this way is treated as industrial waste and is incinerated or used for landfill.

また、余剰汚泥の排出量は膨大になることから、近年では、濃縮された汚泥を更に減容化するなど、種々の対応が検討されている（例えば、特許文献１）。   In addition, since the amount of excess sludge discharged is enormous, various measures such as further reducing the volume of concentrated sludge have been studied in recent years (for example, Patent Document 1).

特開２００７−２１３６７号公報JP 2007-21367 A

下水施設は大きな設備であり、それぞれの処理槽は屋外に配置されているため、自然環境による影響を受けやすい。特に冬場では、温度低下により活性汚泥（微生物）の活性が低下してしまい、汚泥の処理能力が低下してしまう。   The sewage facility is a large facility, and each treatment tank is located outdoors, so it is easily affected by the natural environment. Especially in winter, the activity of activated sludge (microorganisms) is reduced due to a decrease in temperature, and the treatment capacity of sludge is reduced.

本発明は、上記事項に鑑みてなされたものであり、その目的とするところは、自然環境の影響を受けがたく、効率よく処理可能な汚泥処理装置を提供することにある。   The present invention has been made in view of the above matters, and an object of the present invention is to provide a sludge treatment apparatus that is not easily affected by the natural environment and can be efficiently treated.

本発明に係る汚泥処理装置は、
最初沈殿池を経由して流入する汚水中の有機物を活性汚泥法によって処理する生物反応槽と、
前記生物反応槽で生じた活性汚泥を濃縮する濃縮槽と、
前記濃縮槽から流入する濃縮汚泥を減量する汚泥減量槽と、
前記生物反応槽及び前記汚泥減量槽の少なくともいずれかを覆い、温度低下を抑制し、前記生物反応槽における活性汚泥処理及び前記汚泥減量槽における減量処理の少なくともいずれかを活性化させる被覆材と、を備える、
ことを特徴とする。 The sludge treatment apparatus according to the present invention is
A biological reaction tank for treating the organic matter in the sewage flowing in through the first sedimentation basin by the activated sludge method;
A concentration tank for concentrating the activated sludge produced in the biological reaction tank;
A sludge weight reduction tank for reducing the concentrated sludge flowing in from the concentration tank;
Covering at least one of the biological reaction tank and the sludge weight reduction tank, suppressing a temperature drop, and activating at least one of the activated sludge treatment in the biological reaction tank and the weight loss treatment in the sludge weight reduction tank, Comprising
It is characterized by that.

また、前記汚泥減量槽が前記被覆材で覆われていることが好ましい。   Moreover, it is preferable that the said sludge reduction tank is covered with the said coating | covering material.

また、前記汚泥減量槽で生じた高濃度濃縮汚泥の全量を前記生物反応槽へ返送する高濃度濃縮汚泥返送ラインを備えることが好ましい。   Moreover, it is preferable to provide the high concentration concentrated sludge return line which returns the whole quantity of the high concentration concentrated sludge produced in the said sludge reduction tank to the said biological reaction tank.

また、前記汚泥減量槽で生成するメタンガスを回収するメタンガス回収タンクを備え、
前記汚泥減量槽を嫌気条件にし、メタンガスを発生させて前記メタンガス回収タンクに回収してもよい。 In addition, a methane gas recovery tank for recovering methane gas generated in the sludge reduction tank is provided,
The sludge reduction tank may be subjected to anaerobic conditions to generate methane gas and collect it in the methane gas recovery tank.

また、前記メタンガスを燃焼させ、水を加熱して蒸気或いは温水を発生させるボイラを備え、
蒸気或いは温水で前記生物反応槽或いは前記汚泥減量槽を加熱してもよい。 In addition, a boiler for burning the methane gas and heating the water to generate steam or hot water is provided,
The biological reaction tank or the sludge reduction tank may be heated with steam or hot water.

本発明に係る汚泥処理装置では、生物反応槽及び汚泥減量槽の少なくともいずれかの槽を覆う被覆材を備えているため、被覆材で覆われた生物反応槽及び汚泥減量槽の少なくともいずれかの槽における温度低下が抑えられる。これにより、汚泥を処理する微生物の活性低下が抑えられ、汚泥の処理効率が高い利点を有する。   In the sludge treatment apparatus according to the present invention, since the coating material covering at least one of the biological reaction tank and the sludge reduction tank is provided, at least one of the biological reaction tank and the sludge reduction tank covered with the coating material is provided. The temperature drop in the tank is suppressed. Thereby, the activity fall of the microorganisms which process sludge is suppressed, and it has the advantage that the processing efficiency of sludge is high.

実施の形態に係る汚泥処理装置の構成図である。It is a block diagram of the sludge processing apparatus which concerns on embodiment. 他の形態に係る汚泥処理装置の構成図である。It is a block diagram of the sludge processing apparatus which concerns on another form. 従来の一般的な汚泥処理装置の構成図である。It is a block diagram of the conventional common sludge processing apparatus.

本実施の形態に係る汚泥処理装置１は、最初沈殿池１０、生物反応槽２０、汚泥分配槽３０、濃縮槽４０、汚泥減量槽５０、被覆材６０、汚泥返送ライン７０、高濃度濃縮汚泥返送ライン８０を備える。   The sludge treatment apparatus 1 according to this embodiment includes an initial sedimentation tank 10, a biological reaction tank 20, a sludge distribution tank 30, a concentration tank 40, a sludge reduction tank 50, a coating material 60, a sludge return line 70, and a high concentration concentrated sludge return. Line 80 is provided.

最初沈殿池１０は、下水処理施設において、スクリーンなどでゴミが除去された下水が流入する槽である。最初沈殿池１０は、下水中の沈殿しやすい汚れを沈殿させて除去し、沈殿し難い浮遊性の有機物は上澄みとともに生物反応槽２０へ送られる。   The first settling basin 10 is a tank into which sewage from which dust has been removed by a screen or the like flows in a sewage treatment facility. First, the sedimentation tank 10 precipitates and removes easily settled dirt in the sewage, and floating organic substances that are difficult to settle are sent to the biological reaction tank 20 together with the supernatant.

生物反応槽２０は、活性汚泥法により、下水中の有機物を処理する槽である。生物反応槽では、活性汚泥（微生物）の活動を支えるため、空気（酸素）を槽内に吹き込んで好気条件にし、下水中の好気性微生物に有機物を吸着、摂取、分解させる。生物反応槽２０では、上記の生物処理によって、多量の汚泥（活性汚泥）が発生する。   The biological reaction tank 20 is a tank for treating organic substances in sewage by an activated sludge method. In the biological reaction tank, in order to support the activity of activated sludge (microorganisms), air (oxygen) is blown into the tank to make aerobic conditions, and organic substances are adsorbed, ingested and decomposed by aerobic microorganisms in the sewage. In the biological reaction tank 20, a large amount of sludge (activated sludge) is generated by the above biological treatment.

生物反応槽２０から流出した汚泥は、汚泥分配槽３０にて、返送汚泥と余剰汚泥に分配される。分離された返送汚泥は、返送汚泥ライン７０を通じて、再度生物反応槽２０へ返送される。一方、余剰汚泥は濃縮槽４０へ送られる。   The sludge that has flowed out of the biological reaction tank 20 is distributed in the sludge distribution tank 30 into return sludge and excess sludge. The separated return sludge is returned again to the biological reaction tank 20 through the return sludge line 70. On the other hand, excess sludge is sent to the concentration tank 40.

濃縮槽４０では、流入した余剰汚泥を濃縮する。濃縮槽４０では、余剰汚泥をゆっくり沈殿させる。その他、重力濃縮装置、浮上濃縮装置、ベルト濃縮装置、膜濃縮装置など、機械的な濃縮装置も使用され得る。濃縮槽４０で濃縮された汚泥（濃縮汚泥）は、汚泥減量槽５０へ送られる。   In the concentration tank 40, the excess sludge that has flowed in is concentrated. In the concentration tank 40, excess sludge is slowly precipitated. In addition, mechanical concentrators such as gravity concentrators, levitation concentrators, belt concentrators, and membrane concentrators can also be used. The sludge (concentrated sludge) concentrated in the concentration tank 40 is sent to the sludge reduction tank 50.

汚泥減量槽５０は、濃縮汚泥を更に減容化する槽である。汚泥減量槽５０では、たとえば、濃縮汚泥中の好気性好熱菌等の微生物による生物作用により、濃縮汚泥中の有機物が吸着、摂取、分解され、更なる減容化がほどこされる。このため、汚泥減量槽５０には、濃縮汚泥が好気的環境下におかれるよう、曝気装置が備えられる。   The sludge reduction tank 50 is a tank that further reduces the volume of the concentrated sludge. In the sludge reduction tank 50, for example, organic substances in the concentrated sludge are adsorbed, ingested, and decomposed by biological action by microorganisms such as aerobic thermophilic bacteria in the concentrated sludge, and further volume reduction is performed. For this reason, the sludge reduction tank 50 is provided with an aeration device so that the concentrated sludge is placed in an aerobic environment.

被覆材６０は、汚泥減量槽５０を覆うように配置されている。被覆材６０は、汚泥減量槽５０内の温度を高める機能や、汚泥減量槽５０内への雨、雪、風等の侵入を防ぐ機能、汚泥減量槽５０内の温度を保つ機能を果たす。   The covering material 60 is disposed so as to cover the sludge reduction tank 50. The covering material 60 has a function of increasing the temperature in the sludge reduction tank 50, a function of preventing rain, snow, wind and the like from entering the sludge reduction tank 50, and a function of maintaining the temperature in the sludge reduction tank 50.

被覆材６０は、上記機能を果たし得る限り、どのような素材から構成されていてもよく、ポリ塩化ビニル等の軟質樹脂素材や、アクリル等の硬質樹脂素材、アルミ等の軽金属、或いは、これらを複合した形態などが挙げられる。また、被覆材６０は屋外において上記機能を長期に渡って果たし得るよう、耐候性に優れた素材から構成されることが好ましい。   The covering material 60 may be made of any material as long as it can perform the above function, and may be composed of a soft resin material such as polyvinyl chloride, a hard resin material such as acrylic, a light metal such as aluminum, or the like. Examples include composite forms. Moreover, it is preferable that the coating | covering material 60 is comprised from the raw material excellent in the weather resistance so that the said function can be performed over the long term outdoors.

更には、被覆材６０は、日中の太陽エネルギーを利用して、汚泥減量槽５０内の温度を高めるとともに、汚泥減量槽５０の熱が外部へ放熱されることを抑制することにより、汚泥減量槽５０内の温度を高く保ち得るため、太陽光を十分に透過させるよう無色透明、或いは、有色透明な素材であり、且つ、内側からの赤外線（遠赤外線）の透過を抑制し得る素材、例えば、農業用ハウスに利用されている無色のポリ塩化ビニル、ポリオレフィンビニル等であることが好ましい。   Furthermore, the covering material 60 uses the solar energy of the daytime to increase the temperature in the sludge reduction tank 50 and to suppress the heat of the sludge reduction tank 50 from being radiated to the outside, thereby reducing sludge. In order to keep the temperature in the tank 50 high, a material that is colorless and transparent or colored and transparent to sufficiently transmit sunlight, and that can suppress transmission of infrared rays (far infrared rays) from the inside, for example, Colorless polyvinyl chloride, polyolefin vinyl and the like used for agricultural houses are preferable.

また、被覆材６０は、汚泥減量槽５０の全体を覆う形態のほか、汚泥減量槽５０の上部（濃縮汚泥が露出している部分）を覆う形態でもよい。   Moreover, the coating | covering material 60 may be the form which covers the upper part (part which the concentrated sludge is exposed) of the sludge reduction tank 50 other than the form which covers the whole sludge reduction tank 50. FIG.

また、汚泥減量槽５０を好気的環境下に維持すべく、被覆材６０に排気孔が形成されていてもよい。   Further, in order to maintain the sludge reduction tank 50 in an aerobic environment, an exhaust hole may be formed in the covering material 60.

汚泥減量槽５０は、屋外に配備されるものゆえ、自然環境の影響を受けやすい。特に、気温の低い冬期では、汚泥減量槽５０内の温度、即ち、濃縮汚泥の温度が低下してしまう。そうすると、微生物の活性温度は５０℃〜７０℃程度であることから、濃縮汚泥の温度は微生物の活性温度を大きく下回ることになる。このため、微生物（活性汚泥）の活性が低下し、汚泥処理に時間がかかり、処理効率の低下をきたす。   Since the sludge reduction tank 50 is deployed outdoors, it is easily affected by the natural environment. Particularly in the winter when the temperature is low, the temperature in the sludge reduction tank 50, that is, the temperature of the concentrated sludge is lowered. Then, since the microbial activation temperature is about 50 ° C. to 70 ° C., the temperature of the concentrated sludge is significantly lower than the microbial activation temperature. For this reason, the activity of microorganisms (activated sludge) is reduced, sludge treatment takes time, and the treatment efficiency is lowered.

被覆材６０で汚泥減量槽５０が覆われていることにより、汚泥減量槽５０内の温度低下が抑えられ、微生物の活性温度に近づけることができる。このように、被覆材６０によって汚泥減量槽５０は自然環境による影響（温度低下をきたす影響）を受けがたくなるので、汚泥減量槽５０における減量処理の効率化が図れ、処理時間の短縮につながる。また、汚泥減量槽５０に加熱装置が設置されている場合、加熱装置の稼働に要するエネルギーの節約にも資する。   By covering the sludge weight reduction tank 50 with the covering material 60, the temperature drop in the sludge weight reduction tank 50 is suppressed, and the activation temperature of the microorganism can be brought close to. In this way, the sludge reduction tank 50 is less susceptible to the influence of the natural environment (the effect of lowering the temperature) due to the coating material 60, so that the efficiency of the weight reduction process in the sludge reduction tank 50 can be improved and the processing time can be shortened. . Moreover, when the heating apparatus is installed in the sludge reduction tank 50, it also contributes to the energy saving required for operation of a heating apparatus.

なお、上記では、被覆材６０が汚泥減量槽５０に設置された例について説明したが、被覆材６０は、生物反応槽２０にも配置されていてもよい。生物反応槽２０においても、汚泥減量槽５０同様、屋外に配備されているので、自然環境による影響を受けやすく、生物反応槽２０内の温度が微生物の活性温度よりも低下しやすい。被覆材６０によって生物反応槽２０内の温度低下が抑えられることにより、微生物の活性が高められ効率的な生物処理が行われることになる。   In the above description, the example in which the covering material 60 is installed in the sludge reduction tank 50 has been described. However, the covering material 60 may also be disposed in the biological reaction tank 20. Similarly to the sludge reduction tank 50, the biological reaction tank 20 is also provided outdoors, so that it is easily affected by the natural environment, and the temperature in the biological reaction tank 20 tends to be lower than the activation temperature of the microorganisms. Since the temperature drop in the biological reaction tank 20 is suppressed by the covering material 60, the activity of microorganisms is enhanced and efficient biological treatment is performed.

そして、汚泥減量槽５０で生じた高濃度濃縮汚泥の全量は、高濃度濃縮汚泥返送ライン７０を介して生物反応槽２０へ返送される。   Then, the entire amount of the high concentration concentrated sludge generated in the sludge reduction tank 50 is returned to the biological reaction tank 20 through the high concentration concentrated sludge return line 70.

通常の下水処理施設の場合、図３に示したように、濃縮槽４０で濃縮された濃縮汚泥が引き抜かれる。この引き抜かれた濃縮汚泥（引き抜き汚泥）は、脱水装置１１０で水分が除去された後、産業廃棄物として処理されている。たとえば、一日に４００ｍ３の下水を処理する下水処理施設の場合、一月あたりの下水の流入量は１２，０００トンであり、一月あたりの引き抜き汚泥の量は６０トンにも及ぶ。 In the case of a normal sewage treatment facility, as shown in FIG. 3, the concentrated sludge concentrated in the concentration tank 40 is drawn out. The extracted concentrated sludge (drawn sludge) is treated as industrial waste after moisture is removed by the dehydrator 110. For example, in the case of a sewage treatment facility that treats 400 m 3 of sewage per day, the inflow of sewage per month is 12,000 tons, and the amount of extracted sludge per month is as much as 60 tons.

本実施の形態に係る汚泥処理装置１では、汚泥減量槽５０で濃縮汚泥を減量し、生じた高濃度濃縮汚泥の全てを生物反応槽２０に再度返送している。汚泥減量槽５０では、濃縮汚泥が凡そ３０〜４０％まで減量されることから、生じた高濃度濃縮汚泥を生物反応槽２０に全量返送しても支障がない。したがって、汚泥処理装置１では、通常運転においては、産業廃棄物として処理すべき汚泥がほぼ排出されない。   In the sludge treatment apparatus 1 according to the present embodiment, the concentrated sludge is reduced in the sludge reduction tank 50, and all of the generated high concentration concentrated sludge is returned to the biological reaction tank 20 again. In the sludge reduction tank 50, the concentrated sludge is reduced to about 30 to 40%. Therefore, there is no problem even if the generated high concentration concentrated sludge is returned to the biological reaction tank 20 in its entirety. Therefore, in the sludge treatment apparatus 1, in normal operation, sludge to be treated as industrial waste is hardly discharged.

このため、脱水装置の常時稼働の必要がないため、汚泥処理のランニングコストも低減できる。また、脱水された汚泥は通常、産業廃棄物として焼却処理されているが、本実施の形態においては、汚泥が排出されないので、焼却に要する燃料も不要であるため、有限な資源の無駄使いも抑えられる。   For this reason, since it is not necessary to always operate the dehydrator, the running cost of the sludge treatment can be reduced. In addition, dewatered sludge is usually incinerated as industrial waste, but in this embodiment, since sludge is not discharged, the fuel required for incineration is unnecessary, so finite resources are wasted. It can be suppressed.

また、汚泥減量槽５０で生じる高濃度濃縮汚泥は、有機物の処理能力が高いことから、生物反応槽２０における有機物の処理能力の向上にも資する。したがって、被覆材６０の設置と相成って、エネルギーの無駄使いを抑えつつも、汚泥の処理能力に優れた効率のよい汚泥処理装置１を実現している。   Moreover, since the high concentration concentrated sludge produced in the sludge reduction tank 50 has a high organic matter processing capacity, it contributes to the improvement of the organic matter processing capacity in the biological reaction tank 20. Therefore, in combination with the installation of the covering material 60, an efficient sludge treatment apparatus 1 with excellent sludge treatment capability is realized while suppressing wasteful use of energy.

また、図２に示す汚泥処理装置２のように、汚泥減量槽５０にて、メタンを生成させる形態であってもよい。通常、汚泥にはメタン生成菌が生息していることから、汚泥が嫌気条件下におかれると、メタン生成菌によるメタン発酵が行われ、メタンガスが生成する。   Moreover, the form which produces | generates methane may be sufficient in the sludge reduction tank 50 like the sludge processing apparatus 2 shown in FIG. Usually, methanogens inhabit the sludge, so when the sludge is put under anaerobic conditions, methane fermentation by the methanogen is performed and methane gas is generated.

汚泥減量槽５０にてメタンガスを生成させる場合、曝気装置を停止することで、嫌気条件下におくことができ、メタンガスを生成させることができる。例えば、汚泥減量槽５０において、曝気装置の開始、停止を交互に行うことにより、汚泥減量槽５０を好気条件、嫌気条件とすることができ、好気条件による濃縮汚泥の減量処理と嫌気条件によるメタンガス生成処理を交互に行うことができる。   When generating methane gas in the sludge reduction tank 50, it can be set to anaerobic conditions by stopping an aeration apparatus, and can generate methane gas. For example, by alternately starting and stopping the aeration apparatus in the sludge reduction tank 50, the sludge reduction tank 50 can be set to an aerobic condition and an anaerobic condition. The methane gas generation process by can be performed alternately.

なお、汚泥減量槽５０には、被覆材６０が設置されていることから、上記と同様、温度低下が抑えられ、メタン生成菌の活性が促進されるので、メタンガスの生成速度も高められる。   In addition, since the covering material 60 is installed in the sludge reduction tank 50, since the temperature reduction is suppressed and the activity of the methane producing bacteria is promoted as described above, the production rate of methane gas is also increased.

そして、汚泥減量槽５０にて生成したメタンガスは、メタンガス回収タンク９０に回収される。   The methane gas generated in the sludge reduction tank 50 is recovered in the methane gas recovery tank 90.

回収されたメタンガスは、ボイラ１００の燃料に利用することができる。ボイラ１００は公知の蒸気ボイラや温水ボイラであり、メタンガスを燃焼させて水を加熱し蒸気や温水にする。そして、ボイラ１００からの蒸気や温水を生物反応槽２０や汚泥減量槽５０へ供給し、生物反応槽２０や汚泥減量槽５０の加熱に利用することができる。これにより、生物反応槽２０や汚泥減量槽５０の温度を高めることができ、それぞれの処理効率をより高めることができる。   The recovered methane gas can be used as fuel for the boiler 100. The boiler 100 is a well-known steam boiler or hot water boiler, and burns methane gas to heat water to make steam or hot water. Then, steam and hot water from the boiler 100 can be supplied to the biological reaction tank 20 and the sludge reduction tank 50 and used for heating the biological reaction tank 20 and the sludge reduction tank 50. Thereby, the temperature of the biological reaction tank 20 and the sludge reduction tank 50 can be raised, and each processing efficiency can be raised more.

また、上記では回収されたメタンガスをボイラ１００で燃焼させ、生物反応槽２０や汚泥減量槽５０の加熱に利用する形態について説明したが、その他、メタンガスを発電に利用するなど種々の利用法に用いられてもよい。例えば、メタンガスを燃料として駆動するエンジンと、エンジンで発生した回転エネルギーを利用して発電させるジェネレーターとを有する発電装置を設置し、発電装置からの電力を汚泥処理装置２やその他の設備などに利用する形態が挙げられる。   In the above description, the recovered methane gas is combusted in the boiler 100 and used to heat the biological reaction tank 20 and the sludge reduction tank 50. However, the methane gas is used for various other uses such as using methane gas for power generation. May be. For example, a power generation device having an engine driven with methane gas as fuel and a generator for generating electric power using the rotational energy generated by the engine is installed, and the electric power from the power generation device is used for the sludge treatment device 2 and other facilities. The form to do is mentioned.

１ 汚泥処理装置
２ 汚泥処理装置
１０ 最初沈殿池
２０ 生物反応槽
３０ 汚泥分配槽
４０ 濃縮槽
５０ 汚泥減量槽
６０ 被覆材
７０ 汚泥返送ライン
８０ 高濃度濃縮汚泥返送ライン
９０ メタンガス回収タンク
１００ ボイラ
１１０ 脱水装置 DESCRIPTION OF SYMBOLS 1 Sludge processing apparatus 2 Sludge processing apparatus 10 First sedimentation tank 20 Biological reaction tank 30 Sludge distribution tank 40 Concentration tank 50 Sludge reduction tank 60 Coating material 70 Sludge return line 80 High concentration concentrated sludge return line 90 Methane gas recovery tank 100 Boiler 110 Dehydrator

Claims (5)

最初沈殿池を経由して流入する汚水中の有機物を活性汚泥法によって処理する生物反応槽と、
前記生物反応槽で生じた活性汚泥を濃縮する濃縮槽と、
前記濃縮槽から流入する濃縮汚泥を減量する汚泥減量槽と、
前記生物反応槽及び前記汚泥減量槽の少なくともいずれかを覆い、温度低下を抑制し、前記生物反応槽における活性汚泥処理及び前記汚泥減量槽における減量処理の少なくともいずれかを活性化させる被覆材と、を備える、
ことを特徴とする汚泥処理装置。 A biological reaction tank for treating the organic matter in the sewage flowing in through the first sedimentation basin by the activated sludge method;
A concentration tank for concentrating the activated sludge produced in the biological reaction tank;
A sludge weight reduction tank for reducing the concentrated sludge flowing in from the concentration tank;
Covering at least one of the biological reaction tank and the sludge weight reduction tank, suppressing a temperature drop, and activating at least one of the activated sludge treatment in the biological reaction tank and the weight loss treatment in the sludge weight reduction tank, Comprising
A sludge treatment apparatus characterized by that. 前記汚泥減量槽が前記被覆材で覆われている、
ことを特徴とする請求項１に記載の汚泥処理装置。 The sludge weight reduction tank is covered with the coating material,
The sludge treatment apparatus according to claim 1. 前記汚泥減量槽で生じた高濃度濃縮汚泥の全量を前記生物反応槽へ返送する高濃度濃縮汚泥返送ラインを備える、
ことを特徴とする請求項１又は２に記載の汚泥処理装置。 Provided with a high concentration concentrated sludge return line for returning the entire amount of high concentration concentrated sludge generated in the sludge weight reduction tank to the biological reaction tank,
The sludge treatment apparatus according to claim 1 or 2, wherein 前記汚泥減量槽で生成するメタンガスを回収するメタンガス回収タンクを備え、
前記汚泥減量槽を嫌気条件にし、メタンガスを発生させて前記メタンガス回収タンクに回収する、
ことを特徴とする請求項１乃至３のいずれか一項に記載の汚泥処理装置。 A methane gas recovery tank for recovering methane gas generated in the sludge reduction tank is provided,
The sludge reduction tank is subjected to anaerobic conditions, methane gas is generated and recovered in the methane gas recovery tank,
The sludge treatment apparatus according to any one of claims 1 to 3, wherein 前記メタンガスを燃焼させ、水を加熱して蒸気或いは温水を発生させるボイラを備え、
蒸気或いは温水で前記生物反応槽或いは前記汚泥減量槽を加熱する、
ことを特徴とする請求項４に記載の汚泥処理装置。 A boiler that burns the methane gas and heats water to generate steam or hot water,
Heating the biological reaction tank or the sludge reduction tank with steam or hot water;
The sludge treatment apparatus according to claim 4.
JP2016107948A 2016-05-30 2016-05-30 Sludge treatment equipment Pending JP2017213492A (en)

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Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5389059U (en) * 1976-12-22 1978-07-21
JPS53111303A (en) * 1977-01-07 1978-09-28 Shattock Geoffrey Francis Microbiological treatment
JPS53153373U (en) * 1977-05-10 1978-12-02
JPS562898A (en) * 1979-06-19 1981-01-13 Fuji Electric Co Ltd Sludge fermentation apparatus utilizing methane fermentation
JPS5728799U (en) * 1980-07-23 1982-02-15
JPS5939390A (en) * 1982-08-31 1984-03-03 Kumagai Gumi Ltd Apparatus for biochemical disposal of filthy water
JPS59102705U (en) * 1982-12-27 1984-07-11 株式会社明電舎 vinyl house
JPS59115497U (en) * 1983-12-12 1984-08-04 大成建設株式会社 Aeration tank with air membrane cover
JPS6097097A (en) * 1983-10-31 1985-05-30 Kagoshimaken Methane recovery method
JPS60108682A (en) * 1983-11-17 1985-06-14 荏原インフイルコ株式会社 Method of drying solid matter containing water
JPH11235598A (en) * 1997-12-19 1999-08-31 Shinko Pantec Co Ltd Treatment of organic waste water and its treating device
JP2004041953A (en) * 2002-07-12 2004-02-12 Mitsubishi Kakoki Kaisha Ltd Method and equipment for treating organic waste water
JP2004344769A (en) * 2003-05-22 2004-12-09 Asahi Kasei Clean Chemical Co Ltd Organic wastewater treatment apparatus or treatment method using it
JP2007021367A (en) * 2005-07-15 2007-02-01 Kobelco Eco-Solutions Co Ltd Method and apparatus for treating organic sludge
JP2008253963A (en) * 2007-04-09 2008-10-23 Kawasaki Plant Systems Ltd Treating method and treatment facility of waste and sewage

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5389059U (en) * 1976-12-22 1978-07-21
JPS53111303A (en) * 1977-01-07 1978-09-28 Shattock Geoffrey Francis Microbiological treatment
JPS53153373U (en) * 1977-05-10 1978-12-02
JPS562898A (en) * 1979-06-19 1981-01-13 Fuji Electric Co Ltd Sludge fermentation apparatus utilizing methane fermentation
JPS5728799U (en) * 1980-07-23 1982-02-15
JPS5939390A (en) * 1982-08-31 1984-03-03 Kumagai Gumi Ltd Apparatus for biochemical disposal of filthy water
JPS59102705U (en) * 1982-12-27 1984-07-11 株式会社明電舎 vinyl house
JPS6097097A (en) * 1983-10-31 1985-05-30 Kagoshimaken Methane recovery method
JPS60108682A (en) * 1983-11-17 1985-06-14 荏原インフイルコ株式会社 Method of drying solid matter containing water
JPS59115497U (en) * 1983-12-12 1984-08-04 大成建設株式会社 Aeration tank with air membrane cover
JPH11235598A (en) * 1997-12-19 1999-08-31 Shinko Pantec Co Ltd Treatment of organic waste water and its treating device
JP2004041953A (en) * 2002-07-12 2004-02-12 Mitsubishi Kakoki Kaisha Ltd Method and equipment for treating organic waste water
JP2004344769A (en) * 2003-05-22 2004-12-09 Asahi Kasei Clean Chemical Co Ltd Organic wastewater treatment apparatus or treatment method using it
JP2007021367A (en) * 2005-07-15 2007-02-01 Kobelco Eco-Solutions Co Ltd Method and apparatus for treating organic sludge
JP2008253963A (en) * 2007-04-09 2008-10-23 Kawasaki Plant Systems Ltd Treating method and treatment facility of waste and sewage

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