JPS62180795A - Method and apparatus for high-degree treatment of sewage - Google Patents
Method and apparatus for high-degree treatment of sewageInfo
- Publication number
- JPS62180795A JPS62180795A JP61023263A JP2326386A JPS62180795A JP S62180795 A JPS62180795 A JP S62180795A JP 61023263 A JP61023263 A JP 61023263A JP 2326386 A JP2326386 A JP 2326386A JP S62180795 A JPS62180795 A JP S62180795A
- Authority
- JP
- Japan
- Prior art keywords
- stage
- aeration
- contact
- biofilm
- sewage
- 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
- 238000011282 treatment Methods 0.000 title claims abstract description 43
- 239000010865 sewage Substances 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000005273 aeration Methods 0.000 claims abstract description 76
- 239000010802 sludge Substances 0.000 claims abstract description 46
- 239000000463 material Substances 0.000 claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 244000005700 microbiome Species 0.000 claims abstract description 35
- 238000001914 filtration Methods 0.000 claims abstract description 26
- 230000003647 oxidation Effects 0.000 claims abstract description 19
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 19
- 230000003197 catalytic effect Effects 0.000 claims abstract description 16
- 238000011221 initial treatment Methods 0.000 claims abstract description 12
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000009826 distribution Methods 0.000 claims abstract description 9
- 230000000694 effects Effects 0.000 claims abstract description 6
- 239000006228 supernatant Substances 0.000 claims abstract description 6
- 239000002351 wastewater Substances 0.000 claims description 21
- 238000000746 purification Methods 0.000 claims description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 239000012528 membrane Substances 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 7
- 238000004062 sedimentation Methods 0.000 claims description 6
- 238000001179 sorption measurement Methods 0.000 claims description 5
- 239000008213 purified water Substances 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 claims 1
- 238000005192 partition Methods 0.000 claims 1
- 238000004065 wastewater treatment Methods 0.000 claims 1
- 238000004140 cleaning Methods 0.000 abstract 1
- 239000005416 organic matter Substances 0.000 description 7
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 230000000813 microbial effect Effects 0.000 description 4
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- 239000011574 phosphorus Substances 0.000 description 4
- 241001148471 unidentified anaerobic bacterium Species 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 2
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 2
- 241001148470 aerobic bacillus Species 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000010800 human waste Substances 0.000 description 2
- 230000000243 photosynthetic effect Effects 0.000 description 2
- 239000005033 polyvinylidene chloride Substances 0.000 description 2
- 238000002203 pretreatment Methods 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- 241000238578 Daphnia Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 241000700141 Rotifera Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011866 long-term treatment Methods 0.000 description 1
- 210000003632 microfilament Anatomy 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 238000006864 oxidative decomposition reaction Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000005413 snowmelt Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection 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
- 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)
- Activated Sludge Processes (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は高度汚水処理法及びその装置に係わり、更に詳
しくは活性汚泥ばっ気性と接触酸化ばっ気性と組合わせ
、而も接触酸化ばっ気性に於ける接触材として生物ろ過
膜として機能するものを用い、特にこの生物ろ過膜接触
ばっ気段階を多段と成して汚水を高度に浄化する汚水処
理法及びその装置に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an advanced sewage treatment method and an apparatus thereof, and more specifically, it combines activated sludge aeration with catalytic oxidation aeration, and also combines catalytic oxidation aeration with catalytic oxidation aeration. The present invention relates to a sewage treatment method and apparatus for purifying sewage to a high degree by using a material that functions as a biological filtration membrane as a contacting material, and in particular, forming a multi-stage biological filtration membrane contact aeration stage.
周知の通り、汚水の浄化処理工程の中心は微生物による
生物処理であり、この為に用いられる処理法も従来から
種々実施されているが、その主なものの１つは活性汚泥
ばっ気性と称されるものであり、その２は接触酸化ばっ
気性と称されるものである。前者の活性汚泥ばっ気性は
、有機物を含む汚水をばっ気すると、好気性バクテリヤ
や原生動物等の微生物が繁殖し、この汚泥が有機物を吸
着したり、又その生物化学的な作用で有機物の醇化を促
進することから、この微生物を含む汚泥を、人工的に空
気を吹き込み長時間ばっ気することにより、汚水中の大
部分の有機物を酸化分解してＣＯ２とＨ２Ｏとし、汚水
を浄化する方法である。As is well known, the center of the wastewater purification process is biological treatment using microorganisms, and various treatment methods have been used for this purpose, but one of the main ones is called activated sludge aeration. The second type is called catalytic oxidation aeration. The former type of activated sludge aeration is caused by aeration of sewage containing organic matter, which causes microorganisms such as aerobic bacteria and protozoa to proliferate, and this sludge adsorbs organic matter, and due to its biochemical action, organic matter becomes thickened. This is a method to purify sewage by artificially blowing air into the sludge containing these microorganisms and aerating it for a long period of time to oxidize and decompose most of the organic matter in the sewage into CO2 and H2O. be.
この長時間ばっつきの処理によれば、臭気が生しない利
点を有するも、比較的世代時間の長い高等生物等が流出
したり、撹拌する□ので微生物が安定□したい等の他に
、特に余剰汚泥の発生が多く、その引き抜き及び引き抜
いた後の余剰汚泥処分の作業頻度が多くなると共に、富
柴養化の原因とされている窒素、燐のほとん□ど除去さ
れていないのが実情で、而も燐の場合は微生物が過剰取
り込みを行な：い返送汚泥中等の嫌気性環境に於いて放
出するので多量の燐がリサイクルする等の不具合があり
、−これらのことからこの活性汚泥法のみでは汚水浄化
が不十分である。This long-term treatment has the advantage of not producing odor, but higher organisms with a relatively long generation time may flow out or be stirred, so microorganisms should be stabilized. The reality is that the removal of sludge and the disposal of surplus sludge after removal are becoming more frequent, and the fact is that nitrogen and phosphorus, which are the causes of enriched sludge, are hardly removed. In the case of phosphorus, microorganisms take up too much phosphorus and release it in an anaerobic environment such as returned sludge, so there are problems such as a large amount of phosphorus being recycled. Sewage purification is insufficient.
又後□者の接触酸化ばっ気性は、接触材（濾材）の下部
よ・り空気を散気させて、接触材に微生物を繁殖せ、シ
１め、この微生物の生物処理によって汚水中の大部分の
有機物を酸化分解する方法であって、上記・活性汚泥ば
っ気性に比して余剰汚泥の処理が少ないが、臭気が溜ま
る等の不具合がある。The latter type of contact oxidation aeration is achieved by diffusing air from the bottom of the contact material (filter material), allowing microorganisms to grow on the contact material, and by biological treatment of these microorganisms, large amounts of wastewater are removed. This method oxidizes and decomposes the organic matter in the part, and requires less treatment of excess sludge compared to the above-mentioned activated sludge aeration method, but it has disadvantages such as odor accumulation.
モご□で従来からも、この個々の処理法の改善努力力（
成さ・れているが、１つの考え方として前処理法の良い
点を引き出すと共に、各々の欠点を補う為に、前処理法
を組み合わせて浄化効率を上げる技術を考へることがで
きる。即ち活性汚泥ばっ気性と接触酸化ばっ気性の組み
合わせである。然しながら、従来の接触酸化ばっ気性に
用いられている接触材は、基本的には接触材に付着した
微生物表面に接触した汚水を浄化子る機能のみであるこ
とから、微生物の付着接触性が完全でなく、増殖汚泥の
剥離を生じ易く、又微生物□の増殖性も十分でない等の
多くの問題点を□有し、浄化効率を十分とするには不十
分な点があ□るので、上述したように単に従来の活性汚
泥ばっ気性ど・接触酸化ばっ気性を組み合わせても、浄
化効率を上げることができない、そこで本出願人はに活
性汚泥ばっ気性と接触酸化ばっ気性を組み合わ：せるも
、接触酸化ばっ気性で用いる接触材として、近時注目さ
れている塩化ビニリデン製であっ□て、中心の紐状体に
対し、小糸状体を輪状に且づ放射状に設けた。い□わゆ
る生物膜ろ過材を用いることを試みた。Mogo □ has been making efforts to improve each treatment method (
However, one way of thinking is to bring out the good points of the pretreatment methods and to compensate for the shortcomings of each method, by combining the pretreatment methods to improve purification efficiency. That is, it is a combination of activated sludge aeration and catalytic oxidation aeration. However, the contact materials used in conventional contact oxidation aeration systems basically only have the function of purifying wastewater that has come into contact with the surface of microorganisms attached to the contact material, so the adhesion contactability of microorganisms is completely eliminated. However, it has many problems □, such as easy separation of proliferated sludge and insufficient propagation of microorganisms □, and there are some points that are insufficient for achieving sufficient purification efficiency. As mentioned above, simply combining the conventional activated sludge aeration property and catalytic oxidation aeration property cannot increase the purification efficiency. It is made of vinylidene chloride, which has recently been attracting attention as a contact material used in catalytic oxidation aeration, and small filaments were provided in a ring shape and radially with respect to a string-like body at the center. □An attempt was made to use a so-called biofilm filtration material.
上記の生物膜ろ過材は、輪状なので水流によって容易に
付着微生物のフロックが流出することがない等の理由に
より微生物を効率よく付着させ、増殖汚泥の剥離がない
良さを有し、更に付着フロックは、水流により揺動する
ので水中の溶存酸素を効率よく摂取出来ると共に、汚水
との接触効率が非常に良い為に、各種好気性微生物が良
好な環境で共存して繁殖し易すく、且つ長く棲息する。The above-mentioned biofilm filter media has the advantage that microorganisms can be efficiently attached to it because the flocs of attached microorganisms do not easily flow out due to water flow because it is ring-shaped, and there is no peeling of proliferated sludge. Since it is shaken by the water flow, dissolved oxygen in the water can be taken in efficiently, and the contact efficiency with wastewater is very good, so it is easy for various aerobic microorganisms to coexist and reproduce in a favorable environment, and it can live for a long time. do.
更に、この中心部に於いては、部分的に嫌気化する箇所
が生じ、種々の嫌気性菌が発生し易すい長所をもつ、こ
のように広範囲多種類微生物により立体的な生物膜ろ過
であるので、余剰汚泥量が減少し、且つ脱窒、脱燐も可
能である等の良い結果を生ずるので、従来の活性汚泥ば
っ無法と接触′酸化ばっ無法を組合わせた技術の中にこ
の接触材を用いると、臭気の出ない点や余剰汚泥の回収
の：度□合の減少等の良さを発揮できるもの、この接触
□材を用いても活性汚泥ばつ無法と接触酸化ばつ′Ａ：
法を単純に組み合わせただけでは、即ち前段に活性汚泥
ばっ気槽を設け、後段にこの接触材の槽を単一般けただ
けでは上述した生物ろ過膜の接触材のもつ勝れた特徴が
十分発揮されず、汚水の浄化効率が未だ十分でないこと
が確認された。その理由の幾つかを上げると、１つは１
次処理部としての活性汚泥ばっ無法を実施する破砕ばっ
き及び沈澱室への汚水の流入が、時間によって邑然のこ
とながら不均一の為に、この流水流入が時間帯によって
過剰になると、これが一次処理部で未処理のまま２次処
理部の接触酸化ばっ気槽に流入し、これが２次処理部の
浄化処理された水と直接混合してしまうおそれがある。Furthermore, in this central area, there are parts that become anaerobic, which has the advantage that various anaerobic bacteria can easily grow.Thus, a wide variety of microorganisms create a three-dimensional biofilm filtration. As a result, the amount of excess sludge is reduced, and denitrification and dephosphorization are also possible. When using this contact material, it is possible to exhibit advantages such as no odor and a reduction in the degree of excess sludge recovery.
Simply combining two methods, i.e., installing an activated sludge aeration tank in the front stage and a tank for this contact material in the latter stage, will not fully demonstrate the superior characteristics of the contact material of the biological filtration membrane described above. It was confirmed that the efficiency of purifying wastewater was still insufficient. If I list some of the reasons, one is 1.
The inflow of sewage into the crushing and settling chambers that carry out the activated sludge process as the next treatment section is naturally uneven depending on the time of day, so if this inflow of water becomes excessive depending on the time of day, this There is a risk that the untreated water in the primary treatment section may flow into the contact oxidation aeration tank of the secondary treatment section and directly mix with the purified water in the secondary treatment section.
すると、１次処理部への流入汚水の水量、濃度、水質等
の変動に応じて２次処理部に於ける微生物生育環境が変
動し、安定したこの特徴のある生物ろ過膜の浄化機能が
保障されず、究極に於いて浄化効率の向上に限界を生ず
る。その２とする所は、上述したように２次処理部の微
生物生育環境を安定させる事は、安定した生物ろ化がで
きて良い反面、単一工程であると多数の微生物がある定
まった分布となるので、それによる生物学的浄化傾向が
一様となり、汚水の多□面にわたる高度処理が困難とな
る場合があり、□上記生物学的ろ過材の特徴発揮に限界
を生ずる。□
従って本発明の目的とする所は、活性汚泥ばつ気□法喰
接触酸化ばっ無法を組合わせ、上述したポリ・塩化ビニ
リデン製の接触材を用いるも、この生物学□的立体ろ過
膜材の特徴を十分に発揮せしめて、□より効率的に汚れ
を浄化できる方法及び装置を提供するにある。Then, the microbial growth environment in the secondary treatment section changes in response to changes in the amount, concentration, water quality, etc. of the wastewater flowing into the primary treatment section, ensuring a stable purification function of the biological filtration membrane with this characteristic. In the end, there is a limit to the improvement of purification efficiency. The second reason is that, as mentioned above, stabilizing the microbial growth environment in the secondary treatment section allows for stable biofiltration, but on the other hand, in a single process, a large number of microorganisms are distributed in a fixed manner. As a result, the tendency of biological purification becomes uniform, which may make it difficult to perform high-level treatment over many aspects of wastewater, which limits the ability of the biological filter medium to exert its characteristics. □ Therefore, the purpose of the present invention is to combine activated sludge exposure, □ method, contact oxidation, and use the above-mentioned contact material made of polyvinylidene chloride. It is an object of the present invention to provide a method and a device that can purify dirt more efficiently by making full use of the features.
□〔問□題点を解決する為の手段、作用〕即ち本発明は
、流入汚れを活性汚泥ばっ気処理する」次処理段階と、
上記一次処理段階に於いて返□送汚泥から分離された浮
遊汚泥を含む上澄水を受１チ入・れて接触酸化ばつ気す
る二次処理段階より晟り、この二次処理段階の接触材と
して、塩化ビニリデン製の小糸状体を輪状且つ放射状に
中心の紐・状体に配した生物膜立体ろ過機能材を用いて
成る高度汚水処理方法及び装置１に於いて、上記生物膜
立体ろ過機能材による生物膜接触ばつ気段階を少なくと
も数段階直列に配した多段構成と成し。□ [Problem □ Means and action for solving the problem] That is, the present invention includes a next treatment step in which inflowing dirt is aerated with activated sludge;
In the above-mentioned primary treatment stage, the supernatant water containing suspended sludge separated from the returned sludge is put into a tank and subjected to contact oxidation. In the advanced sewage treatment method and device 1, which uses a biofilm 3D filtration function material in which small filaments made of vinylidene chloride are arranged in a ring shape and radially in a central string/shaped body, the above-mentioned biofilm 3D filtration function is provided. It has a multi-stage configuration in which at least several stages of biofilm contact aeration using materials are arranged in series.
一次処理部への流入流水の水量、濃度、水質等が変動し
たとしても、その変動に応じて各段の生物膜立体ろ過機
能材による接触ばっき環境を急激に乱すことなく安定し
て浄化作用を営ましめる一方、多段と成したことにより
各段への汚水の濃度勾配が必然的に相違することとなる
ことから、その濃度勾配に応じて各膜固有の微生物生育
環境を生ぜしめ前段と後段又はそれに続く後段相互に於
いて生育、繁殖する微生物の分布を異ならしめ、各段ご
とに異なる生物学的浄化作用を営ましめ、その総合によ
って汚水の浄化効率を格段に上げて汚水を高度に浄化処
□理□するようにしたものである。これにより、ポリ塩
化ビニリデン製の輪状小糸状体を放射状に中心の紐に配
した生物膜立体ろ過材の機能が十分に発揮される。Even if the amount, concentration, water quality, etc. of the inflowing water to the primary treatment section fluctuates, the biofilm 3D filtration function material at each stage will respond to the fluctuations and provide stable purification without abruptly disturbing the contact environment. On the other hand, since the concentration gradient of sewage to each stage will inevitably differ due to the multi-stage construction, a microbial growth environment unique to each membrane will be created depending on the concentration gradient. Or, the distribution of microorganisms that grow and reproduce in the subsequent stages is made different, and each stage has a different biological purification effect, and the overall efficiency of purification of sewage is greatly increased and the sewage is purified to a high level. It is designed to undergo purification treatment. As a result, the function of the biofilm three-dimensional filter material, in which ring-shaped microfilaments made of polyvinylidene chloride are arranged radially around the central string, is fully exhibited.
次に添付図面に従かい本発明の実施例を詳述する。 Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
第１図はこの発明を実施する例のフローシートを示した
もので、この図に従がい説明すると、水洗便器１に於い
て***されたし尿は汚水供給管２を介して一次処理部と
しての活性汚泥ばつき段階３を構成する破砕ばっ気室４
へ供給される。この場合、１つの例として、成人の排せ
つするし尿は、１人１日約ＩＪＩで、これを約５０リツ
トルの洗浄水で水洗便器より排出するとされていて、そ
の流入８００価は１人１日１３ｇと計測されている。FIG. 1 shows a flow sheet of an example of implementing this invention. To explain according to this diagram, human waste excreted in a flush toilet 1 is passed through a sewage supply pipe 2 to a primary treatment section. Crushed aeration chamber 4 constituting activated sludge dusting stage 3
supplied to In this case, as an example, human waste excreted by an adult is approximately IJI per person per day, and it is said that approximately 50 liters of flushing water is used to discharge this from a flush toilet, and the inflow is 800 yen per person per day. It was measured at 13g.
さてここでは、ブロアー５及び散気管６を介して破砕ば
っ気室４の下部より空気が吹込まれているので、そのエ
アーレーションにより流入計水中の固形□物が破砕細分
され、汚水と活性汚泥（返送汚泥）とが混合される。即
ち返送汚泥が汚水中の固形物を吸着し、活性汚泥中の微
生物が上記固形物中の有機物を酸化分解するものである
。次いで、これらが次の沈澱分離室７へ流入し、ここで
静置されて、活性汚泥と浮遊汚泥を含む上澄水に分離さ
れる。この段階では、ＢＯＤ除去率８５％、処理水Ｂ”
ＯＤ ９０ ｐ ｐ ｍ（７）効果が上がる。Here, since air is blown from the lower part of the crushing aeration chamber 4 via the blower 5 and the air diffuser 6, the solid matter in the inflow meter water is crushed and finely divided into sewage and activated sludge ( returned sludge). That is, the returned sludge adsorbs solid matter in the sewage, and the microorganisms in the activated sludge oxidize and decompose the organic matter in the solid matter. Next, these flow into the next sedimentation separation chamber 7, where they are left standing and separated into activated sludge and supernatant water containing suspended sludge. At this stage, the BOD removal rate is 85%, and the treated water B”
OD 90 p p m (7) Increases effectiveness.
分・敲上澄水は、沈澱分離室７の上壁８をオーバフロー
して次段の二次処理部としての生物膜立体ろ過材による
接触酸化ばつ気段階９へ流入する。この二次接触ばっ気
段階９は、多段構成であって、少なくとも３段、多くて
５段の直列多段であり、この例では４段の例を示しであ
る。即ち、上記沈澱分離室７の上壁８をオーバフローし
た汚水は先ず第１段目の接触ばっき室ｌＯへ流入する。The filtrate clear water overflows the upper wall 8 of the sedimentation separation chamber 7 and flows into the catalytic oxidation aeration stage 9 using a biofilm three-dimensional filtration material as the next stage secondary treatment section. The secondary contact aeration stage 9 is of multi-stage construction, with at least three stages and at most five stages in series, with four stages being shown in this example. That is, the wastewater that has overflowed the upper wall 8 of the sedimentation separation chamber 7 first flows into the first stage contact aeration chamber IO.
この接触ばっき室ｌＯには、第５図〜第７図に示すよう
な生物膜立体ろ過材１１が配設されている。即ち、これ
は塩化ビニリデン製であって、中心の紐状体ａに対し輪
状小糸状体すを、放射状にあらゆる方向に配したもので
、上記輪状小糸状体す自体も数本の細い塩化ビニリデン
糸Ｃから出来ているもので、これを第１段目の接触ばつ
気室１０内へ垂直に吊すものであり、この下方に、ブロ
ア５によって送れる空気を散気する為の散気管１２が配
されている。この第１段目の接触ばっき室１０から流出
した汚水は、次に下部の移流口１４を介して、第２段目
の接触ばっ気室１５へ流入する。ここにも上記第５図〜
第７図に示すような生物膜立体ろ過材１１が、第１段目
と同じようにして配設され、且つこの下方にブロア５に
よって送られる空気を散気する為の散気管１６が配設さ
れている。そして□、この第２段目の接触ばっ気室１５
から流出した汚水は、次に下部の移流口１７を介して、
第３段目の接触ば、っ気室１８へ流入する。ここも同じ
で。A biofilm three-dimensional filter material 11 as shown in FIGS. 5 to 7 is disposed in this contact aeration chamber IO. That is, it is made of vinylidene chloride, and ring-shaped filaments are arranged radially in all directions with respect to a central string-like body a, and the ring-shaped filaments themselves are also made of several thin vinylidene chloride filaments. It is made of thread C and is hung vertically into the contact air chamber 10 of the first stage, and a diffuser pipe 12 for diffusing the air sent by the blower 5 is arranged below this. has been done. The wastewater flowing out of the first-stage contact aeration chamber 10 then flows into the second-stage contact aeration chamber 15 via the lower advection port 14. Also shown in Figure 5 above
A biofilm three-dimensional filter material 11 as shown in FIG. 7 is arranged in the same manner as in the first stage, and an aeration pipe 16 for diffusing the air sent by the blower 5 is arranged below it. has been done. And □, this second stage contact aeration chamber 15
The sewage flowing out of the sewage is then passed through the advection port 17 at the bottom.
When the third stage contacts, it flows into the air chamber 18. Same here.
生物膜立体ろ過材１！が配設され、且つ下方に散気管１
θが配設されている。そして移流口２０を介して移る□
汚水は第４段目の接触かつ気室２１へ流入する。Biofilm 3D filter material 1! is installed, and a diffuser pipe 1 is installed below.
θ is arranged. Then, it moves through the advection port 20 □
The sewage flows into the fourth stage contact and air chamber 21.
ここも先の第１段、第２段、第３段と同様であって、生
物膜立体ろ過材１１が配設されていると共に散気管２２
が配されている。This is also the same as the first stage, second stage, and third stage, and a biofilm three-dimensional filter material 11 is provided and an aeration pipe 22 is provided.
are arranged.
この二次処理部の多段構成の各接触ばっ気室に於ける生
物膜立体ろ過材１１は、輪状小糸状体すを、放射状にあ
らゆる方向に配したものなので。The biofilm three-dimensional filter material 11 in each of the contact aeration chambers in the multi-stage structure of the secondary treatment section has ring-shaped filamentous bodies arranged radially in all directions.
水流によって容易に付着微生物のフロックｄが流出する
ことがない微生物を効率よく付着させ、増殖汚泥の剃離
がない良さを有し、更に付着フロックｄは、水流により
揺動するので水中の溶存酸素を効率よく摂取出来ると共
に、汚水との接触効率が非常に良い為に、各種好気性微
生物が良好な環境で共存して繁殖し易すく、且つ長く棲
息する。The flocs d of attached microorganisms are not easily washed away by water currents, so microorganisms can be efficiently attached, and the grown sludge does not come off.Furthermore, the attached flocs d are swayed by water currents, so there is no dissolved oxygen in the water. In addition to being able to efficiently ingest wastewater, it also has very good contact efficiency with wastewater, making it easy for various aerobic microorganisms to coexist and reproduce in a favorable environment, and to live there for a long time.
更にこの中心部に於いて体、部分的に嫌気イヒする箇所
が生じ種々の嫌気性菌が発生するものであるが、上記の
１段目の接触ばっ気室１０に於いては、一次処理部の沈
澱分離室７から流入した浮遊汚泥を含む上澄水中の微生
物が上記の生物膜立体ろ過材１１に付着するものであり
、上述した良い機能を発揮して各種微生物を共生させ、
その共生の微生物により有機物の酸化１分解が実施され
る。第２段目の接触ばっ気室１５に於いては、必要な光
合成菌をシーデシングすることにより、更に微生物の混
合、吸着、分解作用が促進され、より一層の酸化、分解
が促進される。そして第３段目の接触ばっき気１８に於
いては、上記生物膜立体ろ過材１１の機能がよりよく発
揮される。即ち、より生物膜の生成が図られ、著しく余
剰汚泥量が減少すると共に、このろ過材１１の外周に好
気生菌、内芯部に通性嫌気性菌が付着し、発生汚泥が著
しく減する。Furthermore, in this central part, there are parts of the body that become anaerobic and various anaerobic bacteria are generated, but in the first stage contact aeration chamber 10, Microorganisms in the supernatant water containing suspended sludge flowing from the sedimentation separation chamber 7 adhere to the above-mentioned biofilm three-dimensional filter medium 11, and exhibit the above-mentioned good functions and allow various microorganisms to coexist.
Oxidative decomposition of organic matter is carried out by the symbiotic microorganisms. In the second-stage contact aeration chamber 15, by seeding the necessary photosynthetic bacteria, the mixing, adsorption, and decomposition actions of microorganisms are further promoted, and oxidation and decomposition are further promoted. In the third stage contact aeration 18, the function of the biofilm three-dimensional filter medium 11 is better exhibited. That is, more biofilm is produced, and the amount of surplus sludge is significantly reduced.Aerobic bacteria are attached to the outer periphery of the filter medium 11, and facultative anaerobic bacteria are attached to the inner core, and the generated sludge is significantly reduced. do.
第４段目の接触ばっ気室２１では、先にシーデイングさ
れた光合成菌により更に高度処理が進み、藻類や後生動
物（ワムシ、ミジンコ等）により脱燐が行なわれ、この
段階で汚水の浄化が完了するものである。即ちＢＯＤ除
去率は、はぼ１００％に近く、処理水ＢＯＤは５ｐｐｍ
まで下がるものである。In the fourth stage, the contact aeration chamber 21, the previously seeded photosynthetic bacteria proceed to further advanced treatment, and algae and metazoans (rotifers, daphnia, etc.) perform dephosphorization, and at this stage the wastewater is purified. It is something that will be completed. In other words, the BOD removal rate is almost 100%, and the treated water BOD is 5 ppm.
It goes down to
所で以上は多数接触ばっ気室１Ｇ、 １５．１８．２１
に於ける機能を説明したものであるが、この場合、この
二次処理部を上述したように多段構成としているので、
１時処理部３への流入汚水の水量、濃度、水質等が時間
帯によって変動した場合、二次処理段階９の一段目接触
ばっ気室１０へはその変動の影響が表われるものの、２
段目、３段目、４段目−参−は、上記の変動の影響が直
接表われない。この為に上記特徴のある生物ろ過膜の浄
化機能が保障されるものである。Multiple contact aeration chamber 1G, 15.18.21
In this case, the secondary processing section has a multi-stage configuration as described above, so
If the amount, concentration, water quality, etc. of the wastewater flowing into the 1-hour treatment section 3 fluctuates depending on the time of day, the influence of the fluctuation will appear on the first-stage contact aeration chamber 10 of the secondary treatment stage 9;
The effects of the above fluctuations do not directly appear in the 3rd, 3rd and 4th rows. For this reason, the purifying function of the biological filtration membrane with the above-mentioned characteristics is guaranteed.
とりわけ、このように接触ばっき室を多段と成している
ので、各段に於ける汚水の濃度が必然的に異なってくる
。すると各段ごとに濃度勾配に応じて微生物の分布が異
なることとなる。この為に１段口と、２段目、２段目と
３段目、３段目と４段目では汚泥の分解を成す微生物の
分布が異なる故に、１段目では浄化できなかったものが
、２段目以降のある微生物の分布によっては浄化できる
結果が生ずることとなる。このようにしてその総合結果
の浄化効率が向上するものである。In particular, since the contact aeration chamber is constructed in multiple stages, the concentration of wastewater in each stage inevitably differs. As a result, the distribution of microorganisms differs at each stage depending on the concentration gradient. For this reason, the distribution of microorganisms that decompose sludge is different between the first stage, the second stage, the second and third stages, and the third and fourth stages, so that what could not be purified in the first stage is Depending on the distribution of certain microorganisms in the second and subsequent stages, purification results may occur. In this way, the overall purification efficiency is improved.
上記多段構成の接触ばっ気段階９の最終段階の接触ばっ
気室２１を出たＢＯＤｌＯｐｐｍ以下の上水は、移流口
２３を介して三次処理部２４へ流入する。The clean water having a BOD1Oppm or less that has exited the contact aeration chamber 21 at the final stage of the contact aeration stage 9 of the multi-stage configuration flows into the tertiary treatment section 24 via the advection port 23.
即ちろ過室２５を通り、次に活性炭吸着室２６を通り、
ＣＯＤ除去、脱臭、脱色される。次いで移流口２７を通
り、塩素滅菌工程を径て貯水室２日に一時貯られ、循環
ポンプ２９によって水洗便器ｌのロータンクへ戻され再
び利用される。勿論、再利用先は単なる散水、防火用水
池、露地池、融雪水その他があるし、場合によっては放
流してもよい。That is, it passes through the filtration chamber 25, then through the activated carbon adsorption chamber 26,
Removes COD, deodorizes, and decolorizes. The water then passes through the advection port 27, undergoes a chlorine sterilization process, is temporarily stored in the water storage chamber on the 2nd day, is returned to the low tank of the flush toilet l by the circulation pump 29, and is used again. Of course, the water can be reused as simple water, fire prevention water ponds, outdoor ponds, snowmelt water, etc., and depending on the situation, it may be discharged.
而して途上の第１〜第４段の接触ばっ気室１０゜１５．
１８．２１への空気の散気駿は第１段が最大であり、以
下順次少なくする等して調節できるものである。The first to fourth stage contact aeration chambers 10°15.
The amount of air diffused to 18 and 21 is maximum in the first stage, and can be adjusted by decreasing it successively thereafter.
以上詳述した如く、この発明は二次処理段階の接触材と
して、塩化ビニリデン製の小糸状体を輪状且つ放射状に
中心の紐状体に配した生物膜立体ろ過膜機能材を用いて
いるので、付着微生物のフロックが流出せず微生物を効
率よく付着できると共に、増殖汚泥の剥離がない良さを
発揮し、更に付着フロックは水流により揺動するので水
中の溶存酸素を効率よく摂取出来ると共に、汚水との接
触効率が非常に良い為に各種好気性微生物が良好な環境
で共存して繁殖し易すく、且つ長く棲息し５更にはこの
中心部に於いそは部分的に嫌気化する箇所が生じ１種々
の嫌気性菌が発生し易すいので、汚水を高度に処理でき
、余剰汚泥量が減少し、且つ脱窒、脱燐も可能とされる
ものであり、特に、この二次処理部を多段と成している
ので、一次処理部への汚水の流入量の変動や、濃度、水
質の変動が生じた場合でも、その変動の＃響を直接二次
処理部全体が受けることなく平滑化できるので、多段の
各段の接触ばっき室の微生物生育環境を安定的と成し、
より効率よく浄化できるものであり、とりわけ各段ごと
に汚水の濃度勾配に応じて微生物の分布を必然的に異な
らしめ得るので、一つの接触ばっ気室の微生物の分布で
は十分浄化できないものも、他の接触ばっ気室の微生物
の分布では十分浄化しきれるという好結果を生むので、
総合的にみて汚水の浄化効率が格段と向上するものであ
る。As detailed above, this invention uses a biofilm three-dimensional filtration membrane functional material in which small filaments made of vinylidene chloride are arranged in a circular and radial manner in a central string-like body as a contact material in the secondary treatment stage. , the attached flocs of microorganisms do not flow out and microorganisms can be attached efficiently, and the proliferated sludge does not peel off.Furthermore, the attached flocs are shaken by the water flow, so dissolved oxygen in the water can be efficiently taken in, and the sewage can be effectively absorbed. Because the contact efficiency is very high, it is easy for various aerobic microorganisms to coexist and reproduce in a favorable environment, and they can live there for a long time. 1. Since it is easy for various anaerobic bacteria to occur, wastewater can be treated to a high degree, the amount of surplus sludge is reduced, and denitrification and dephosphorization are also possible. Because it is constructed in multiple stages, even if there are fluctuations in the amount of wastewater flowing into the primary treatment section, concentration, or water quality, the effects of those fluctuations will not be directly affected by the entire secondary treatment section, and will be smoothed out. This allows for a stable microbial growth environment in each multi-stage contact aeration chamber.
It can be purified more efficiently, and in particular, the distribution of microorganisms in each stage can necessarily be different depending on the concentration gradient of the wastewater, so even if the distribution of microorganisms in one contact aeration chamber cannot be sufficiently purified, The distribution of microorganisms in other contact aeration chambers produces good results that can be sufficiently purified.
Overall, the efficiency of purifying sewage is greatly improved.
添付図面は本発明の実施例を示し、第１図はフローシー
ト図、第２図はこの方法を実施する為の汚水浄化槽の平
面図、第３図は第２図のＡ−Ａ線に沿う断面図、第４図
は第２図のＢ−Ｂ線に沿う断面図、第５図は生物膜立体
ろ過材の正面図、第６図は第５図のＣ−Ｃ線に沿う断面
図、第７図は一つの輪状体を抽出して示した図である。
図中１は水洗便器、３は活性汚泥ばっ気段階としての一
時処理部、４１、を破砕ばっ気室、７は沈澱分離室、９
は生物膜立体ろ過材による接触ばっ気段階としての多段
の二次処理部、１０は第１段目接触ばっ気室、１１は生
物膜立体ろ過材、１５は第２段目接触ばっ気室、１日は
第３１２１１接触ばっ気室、２１は第４段目接触ばっ気
室、２４は三次処理部、２５はろ過室、２６は活性炭吸
着室、ａは中心の紐状体、６は輪状小糸状体、Ｃは塩化
ビニリデン糸、ｄはフロックを各々示している。
ヌ／２２りThe attached drawings show an embodiment of the present invention, and FIG. 1 is a flow sheet diagram, FIG. 2 is a plan view of a sewage septic tank for carrying out this method, and FIG. 3 is taken along line A-A in FIG. 2. A sectional view, FIG. 4 is a sectional view taken along the line B-B in FIG. 2, FIG. 5 is a front view of the biofilm three-dimensional filter material, and FIG. 6 is a sectional view taken along the line C-C in FIG. 5. FIG. 7 is a diagram showing an extracted ring-shaped body. In the figure, 1 is a flush toilet, 3 is a temporary processing section as an activated sludge aeration stage, 41 is a crushing aeration chamber, 7 is a sedimentation separation chamber, 9
10 is a first stage contact aeration chamber, 11 is a biofilm 3D filter, 15 is a second stage contact aeration chamber, On the 1st, 31211 is the contact aeration chamber, 21 is the fourth stage contact aeration chamber, 24 is the tertiary treatment section, 25 is the filtration chamber, 26 is the activated carbon adsorption chamber, a is the center string-shaped body, 6 is the ring-shaped small The filament, C indicates vinylidene chloride thread, and d indicates floc. Nu/22ri
Claims (5)
一次処理段階に於いて返送汚泥から分離された浮遊汚泥
を含む上澄水を受け入れて接触酸化ばっ気する二次処理
段階より成り、この二次処理段階の接触材として、塩化
ビニリデン製の小糸状体を輪状且つ放射状に中心の紐状
体に配した生物膜立体３過機能材を用いて成る高度汚水
処理方法に於いて；上記生物膜立体ろ過機能材による生
物膜接触ばっ気段階を多段構成と成し、一次処理部への
汚水の流入量、濃度、水質等が変動したとしても、その
変動に応じて各段の生物膜立体ろ過機能材による接触ば
っ気環境を急激に乱さないようにすると共に、各段の汚
水濃度勾配に応じて各段ごとの微生物分布を異ならしめ
て、各段ごとに異なる生物学的浄化作用を可能にしてこ
とを特徴とする高度汚水処理方法。(1) Consists of a primary treatment stage in which sewage is aerated with activated sludge, and a secondary treatment stage in which supernatant water containing suspended sludge separated from returned sludge in the primary treatment stage is received and aerated with catalytic oxidation. In an advanced sewage treatment method using a biofilm three-dimensional 3-hyperfunctional material in which small filaments made of vinylidene chloride are arranged in a circular and radial manner in a central string-like body as a contact material in the secondary treatment stage; The biofilm contact aeration stage using the membrane three-dimensional filtration function material has a multi-stage configuration, and even if the inflow amount, concentration, water quality, etc. of wastewater to the primary treatment section fluctuate, the biofilm contact aeration stage at each stage is adjusted according to the fluctuations. In addition to preventing the contact aeration environment from being suddenly disturbed by the filtration function material, the distribution of microorganisms at each stage is made different according to the wastewater concentration gradient at each stage, allowing for different biological purification effects at each stage. An advanced sewage treatment method characterized by a lever.
活性炭吸着段階より成る３次処理部段階があることを特
徴とする特許請求の範囲第１項記載の高度汚水処理方法
。(2) The advanced sewage treatment method according to claim 1, characterized in that a tertiary treatment section consisting of a filtration step and an activated carbon adsorption step is provided next to the secondary treatment section having the multi-stage structure.
触ばっ気段階から浄化水が次の接触ばっ気段階へ移る時
には、次の接触ばっ気段階の生物膜立体ろ過機能材の下
方に流入するようになっていることを特徴とする特許請
求の範囲第１項記載の高度汚水処理方法。(3) When purified water is transferred from one contact aeration stage to the next contact aeration stage in the contact aeration stage of the multi-stage configuration described above, the purified water is transferred under the biofilm three-dimensional filtration functional material of the next contact aeration stage. 2. The advanced sewage treatment method according to claim 1, wherein the wastewater is inflow.
触ばっ気段階への空気散気は、生物膜立体ろ過機能材の
下方から上方へ向けて行なわれるようになっていると共
に、第１段目の散気空気量に比し、２段目以降が順次少
なめに調節されていることを特徴とする特許請求の範囲
第１項記載の高度汚水処理方法。(4) Air dispersion to each contact aeration stage in the contact aeration stage of the multi-stage configuration is performed from the bottom to the top of the biofilm three-dimensional filtration functional material, and 2. The advanced wastewater treatment method according to claim 1, wherein the amount of diffused air in the second and subsequent stages is successively adjusted to be smaller than the amount of diffused air in the first stage.
る活性汚泥ばっ気処理部としての一次処理部と、ここで
分離された浮遊汚泥を含む上澄水を受け入れて接触酸化
ばっ気する二次処理部が形成され、上記接触酸化ばっ気
の為の接触材として、塩化ビニリデン製の小糸状体を輪
状且つ放射状に中心の紐状体に配した生物膜立体ろ過機
能材を用いた高度汚水処理装置に於いて；上記二次処理
部は、多段の接触ばっ気室として構成され、各段の接触
ばっ気室の各々には上記生物膜立体ろ過機能材が吊下配
置されていると共に、この下方に空気を散気する為の散
気管が配設され、更に各段接触ばっ気室相互を仕切る壁
面の下部には各段接触ばっ気室相互を連通する汚水の移
流口が形成され、且つこれら多段の二次処理部の次段に
ろ過室と活性炭吸着室より成る三次処理部が配されてい
ることを特徴とする高度汚水処理装置。(5) The septic tank body includes a primary treatment section as an activated sludge aeration treatment section consisting of a crushing aeration chamber and a sedimentation separation chamber, and a secondary treatment section that receives the supernatant water containing suspended sludge separated here and performs catalytic oxidation aeration. A secondary treatment section is formed, and advanced sewage is used as a contact material for the above-mentioned catalytic oxidation aeration using a biofilm three-dimensional filtration function material in which filamentous bodies made of vinylidene chloride are arranged in a circular and radial manner in a central string-like body. In the treatment device; the secondary treatment section is configured as a multi-stage contact aeration chamber, and the biofilm three-dimensional filtration functional material is suspended from each stage of the contact aeration chamber, and An aeration pipe for dispersing air is arranged below this, and furthermore, a wastewater advection port is formed at the bottom of the wall that partitions each stage of contact aeration chambers from each other to communicate between each stage of contact aeration chambers. An advanced sewage treatment device characterized in that a tertiary treatment section consisting of a filtration chamber and an activated carbon adsorption chamber is disposed at the next stage of these multi-stage secondary treatment sections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61023263A JPS62180795A (en) | 1986-02-05 | 1986-02-05 | Method and apparatus for high-degree treatment of sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61023263A JPS62180795A (en) | 1986-02-05 | 1986-02-05 | Method and apparatus for high-degree treatment of sewage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62180795A true JPS62180795A (en) | 1987-08-08 |
Family
ID=12105714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61023263A Pending JPS62180795A (en) | 1986-02-05 | 1986-02-05 | Method and apparatus for high-degree treatment of sewage |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62180795A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03161097A (en) * | 1989-11-21 | 1991-07-11 | S T Eng Kk | Continuous purification treatment process for soil water |
| JPH06142673A (en) * | 1992-11-09 | 1994-05-24 | Cosmo Clean:Kk | Method and device for treating waste water |
-
1986
- 1986-02-05 JP JP61023263A patent/JPS62180795A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03161097A (en) * | 1989-11-21 | 1991-07-11 | S T Eng Kk | Continuous purification treatment process for soil water |
| JPH06142673A (en) * | 1992-11-09 | 1994-05-24 | Cosmo Clean:Kk | Method and device for treating waste water |
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