JPH0249799B2 - - Google Patents
Info
- Publication number
- JPH0249799B2 JPH0249799B2 JP57168158A JP16815882A JPH0249799B2 JP H0249799 B2 JPH0249799 B2 JP H0249799B2 JP 57168158 A JP57168158 A JP 57168158A JP 16815882 A JP16815882 A JP 16815882A JP H0249799 B2 JPH0249799 B2 JP H0249799B2
- Authority
- JP
- Japan
- Prior art keywords
- chemically stable
- zeolite
- treatment
- silicic acid
- green algae
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 239000000126 substance Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 13
- 241000195628 Chlorophyta Species 0.000 claims description 9
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims description 9
- 229910052698 phosphorus Inorganic materials 0.000 claims description 9
- 239000011574 phosphorus Substances 0.000 claims description 9
- 239000010802 sludge Substances 0.000 claims description 9
- 229910021536 Zeolite Inorganic materials 0.000 claims description 8
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 8
- 244000005700 microbiome Species 0.000 claims description 8
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 8
- 235000012239 silicon dioxide Nutrition 0.000 claims description 8
- 239000010457 zeolite Substances 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 7
- 239000002351 wastewater Substances 0.000 claims description 5
- 238000007254 oxidation reaction Methods 0.000 description 8
- 230000003647 oxidation Effects 0.000 description 7
- 239000007787 solid Substances 0.000 description 7
- 238000004065 wastewater treatment Methods 0.000 description 5
- 241000195493 Cryptophyta Species 0.000 description 4
- 238000004062 sedimentation Methods 0.000 description 4
- 238000005273 aeration Methods 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229930002875 chlorophyll Natural products 0.000 description 1
- 235000019804 chlorophyll Nutrition 0.000 description 1
- ATNHDLDRLWWWCB-AENOIHSZSA-M chlorophyll a Chemical compound C1([C@@H](C(=O)OC)C(=O)C2=C3C)=C2N2C3=CC(C(CC)=C3C)=[N+]4C3=CC3=C(C=C)C(C)=C5N3[Mg-2]42[N+]2=C1[C@@H](CCC(=O)OC\C=C(/C)CCC[C@H](C)CCC[C@H](C)CCCC(C)C)[C@H](C)C2=C5 ATNHDLDRLWWWCB-AENOIHSZSA-M 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 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)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Description
本発明は、活性汚泥法等の二次処理後の廃水の
三次処理方法に関するものである。
The present invention relates to a method for tertiary treatment of wastewater after secondary treatment such as an activated sludge method.
近年公害対策の意識および技術の向上は目ざま
しく、それに伴い廃水処理の分野においても水質
に適応した処理対策が講じられるようになつた。
しかしながら、行政の環境基準に適合するため
には更に高度な廃水処理技術が要求され、例えば
活性汚泥法を用いた場合、汚泥負荷の安定化によ
つて処理能力を向上させることはできても、微生
物によつて捕捉、資化されない窒素、リンの固
定、および浮遊物質の除去が必要となるのであ
る。
この窒素、リンについては富栄養化による放流
水域への汚染問題があり、また浮遊物質の有無は
最も簡単な水質の良否判定のパラメータである。
In recent years, there has been a remarkable improvement in awareness and technology regarding pollution control, and as a result, treatment measures adapted to water quality have begun to be taken in the field of wastewater treatment. However, in order to comply with government environmental standards, more advanced wastewater treatment technology is required. For example, when using the activated sludge method, although treatment capacity can be improved by stabilizing the sludge load, It is necessary to fix nitrogen and phosphorus that cannot be captured and assimilated by microorganisms, and to remove suspended solids. Concerning nitrogen and phosphorus, there is a problem of contamination of water bodies into which water is discharged due to eutrophication, and the presence or absence of suspended solids is the simplest parameter for determining the quality of water.
本発明は、上記の問題を解決すべく永年鋭意研
究を重ね、廃水の三次処理方法を見いだしたので
ある。
すなわち、本発明は、活性汚泥処理装置等の二
次処理装置から流出する二次処理水と、ケイ酸、
ゼオライト等の化学的に安定な無機物質とを十分
に接触酸化させて、緑藻類等の植物性微生物にて
窒素、リン等を固定するとともに、前記ケイ酸、
ゼオライト等の化学的に安定な無機物質を核とし
前記緑藻類等の植物性微生物を付着させたものを
濾材として浮遊物質の濾過を行なうものである。
The present invention is the result of many years of intensive research in order to solve the above problems, and a method for tertiary treatment of wastewater has been discovered. That is, the present invention provides secondary treatment water flowing out from a secondary treatment device such as an activated sludge treatment device, silicic acid,
By fully contact oxidizing chemically stable inorganic substances such as zeolite, nitrogen, phosphorus, etc. are fixed by plant microorganisms such as green algae, and the silicic acid,
Suspended substances are filtered by using a chemically stable inorganic substance such as zeolite as a core and attached with plant microorganisms such as green algae as a filter medium.
次に本発明についてさらに詳細に説明する。本
発明に用いられるのは、ケイ酸、ゼオライト等の
化学的に安定な物質であつて、水質に応じて4000
〜10000ppm濃度で使用するのが好ましい。そし
て、この物質の本発明における作用は窒素、リン
等の固定と、浮遊物質の除去の二つに大別でき
る。
すなわち、第１図に示すように活性汚泥処理等
の二次処理を経た二次処理水は、連通管１０から
三次処理装置１へ流入して三次原水となる。三次
処理装置１は接触酸化槽２と濾過槽３とに別れて
おり、接触酸化槽２では多孔式散気管２１から送
気機２２によつて曝気を行なう方法を用いた。他
に機械的撹拌に依る方法もあり、その方法を限定
するものではない。この三次処理装置１の段階で
は、主に植物性微生物を生息するが他の微生物は
ほとんど生息しない。接触酸化槽２中では三次原
水と、ケイ酸、ゼオライト等の化学的に安定な無
機物質との間に藻類、緑藻類等のクロロフイルを
有する植物を介して接触酸化反応が行なわれる。
そしてこの際に、窒素、リン等が固定されるとそ
のまま濾過槽３へ流入する。この濾過槽３は沈殿
槽であり、接触酸化槽２で4000〜10000ppmのケ
イ酸、ゼオライト等の化学的に安定な無機物質を
核とし前記緑藻類等の植物性微生物を付着させた
ものは濾過槽３の下部に高濃度で堆積し濾材の作
用を呈する。
すなわち接触酸化させた原水は自然入により濾
過槽３に流入し、原水中に含まれている浮遊物質
は堆積した上記物質にて濾過され清澄水のみが三
次処理水として流出する。
この装置においてもケイ酸、ゼオライト等の化
学的に安定な無機物質の濃度の調整は重要であ
り、二次処理水の時点での水質（浮遊物質等の
量）に応じて濾過槽３から接触酸化槽２への返送
量の調整を行う。なお、この返送機構の手段とし
ては濾過槽３底に設けたスクリユーコンベア３１
等の運搬手段を用いて行うものである。
Next, the present invention will be explained in more detail. Chemically stable substances such as silicic acid and zeolite are used in the present invention, and depending on the water quality, 4000
Preferably used at a concentration of ~10000 ppm. The action of this substance in the present invention can be roughly divided into two: fixation of nitrogen, phosphorus, etc., and removal of suspended solids. That is, as shown in FIG. 1, secondary treated water that has undergone secondary treatment such as activated sludge treatment flows into the tertiary treatment device 1 through the communication pipe 10 and becomes tertiary raw water. The tertiary treatment device 1 is divided into a contact oxidation tank 2 and a filtration tank 3, and in the contact oxidation tank 2, aeration is performed by an air blower 22 through a porous aeration pipe 21. There are other methods that rely on mechanical stirring, and this method is not limited. At this stage of the tertiary treatment device 1, mainly plant microorganisms inhabit, but almost no other microorganisms inhabit. In the catalytic oxidation tank 2, a catalytic oxidation reaction is carried out between tertiary raw water and chemically stable inorganic substances such as silicic acid and zeolite through plants having chlorophyll such as algae and green algae.
At this time, once nitrogen, phosphorus, etc. are fixed, they flow into the filter tank 3 as they are. The filtration tank 3 is a sedimentation tank, and the filtration tank 2 is a filtration tank in which a chemically stable inorganic substance such as 4000 to 10000 ppm of silicic acid or zeolite is used as a core and plant microorganisms such as green algae are attached to the contact oxidation tank 2. It is deposited at a high concentration at the bottom of 3 and acts as a filter medium. That is, the catalytically oxidized raw water naturally flows into the filter tank 3, suspended substances contained in the raw water are filtered by the deposited substances, and only clear water flows out as tertiary treated water. In this device as well, it is important to adjust the concentration of chemically stable inorganic substances such as silicic acid and zeolite. Adjust the amount returned to the oxidation tank 2. Note that the means for this return mechanism is a screw conveyor 31 provided at the bottom of the filtration tank 3.
It is carried out using means of transportation such as
このように本発明は、従来の活性汚泥法におい
て問題であつた窒素、リンを固定し、さらに浮遊
物質をも除去する方法であり、この方法は廃水処
理技術分野において注目に値するものであり、以
下に示す効果を呈する。
本発明は、活性汚泥法で処理不能であつた窒
素、リンを固定し、更に浮遊物質を除去しうるの
で水質の向上するのはもちろんであるが、本発明
を導入するにあたつても従来の曝気槽や沈澱槽と
同じ構造であるため設備投資も軽減できる。ま
た、浮遊物質の濾過に用いる濾材が不要であり、
この点は本発明の特徴とすべき点である。
さらに、廃水処理運転においても、二次処理後
の水質に応じて化学的に安定な無機物質の濃度を
調整することにより安定した処理水を得ることが
できる。更に、また従来の活性汚泥法では沈澱槽
における藻類、緑藻類の発生は浮遊物質となるた
め沈澱物の清掃を必要としていたが、本発明では
前述した藻類、緑藻類を利用して処理を行うので
清掃作業や水質悪化への懸念は不要となる。
このように、本発明は二次処理後の廃水中に化
学的に安定な無機物質を4000〜10000ppm程度混
入して廃水中に存在する藻類、緑藻類との接触酸
化によつて窒素、リンを固定するとともに、その
後、沈澱槽下部に濃縮化したものを濾材として浮
遊物質等の濾過を行なうもので、この新規な処理
方法は廃水処理技術分野において重要な意味をも
つものと期待される。
As described above, the present invention is a method of fixing nitrogen and phosphorus, which were problems in the conventional activated sludge method, and also removing suspended solids, and this method is worthy of attention in the field of wastewater treatment technology. It exhibits the following effects. The present invention fixes nitrogen and phosphorus that could not be treated with the activated sludge method, and also removes suspended solids, which of course improves water quality. Because it has the same structure as the aeration tank and sedimentation tank, equipment investment can be reduced. In addition, there is no need for filter media to filter suspended solids,
This point is a feature of the present invention. Furthermore, even in wastewater treatment operation, stable treated water can be obtained by adjusting the concentration of chemically stable inorganic substances depending on the water quality after secondary treatment. Furthermore, in the conventional activated sludge method, the occurrence of algae and green algae in the sedimentation tank turns into suspended matter, requiring cleaning of the sediment, but in the present invention, the treatment is carried out using the aforementioned algae and green algae, so cleaning is not necessary. There is no need to worry about work or water quality deterioration. In this way, the present invention mixes approximately 4,000 to 10,000 ppm of chemically stable inorganic substances into wastewater after secondary treatment, and fixes nitrogen and phosphorus through contact oxidation with algae and green algae present in the wastewater. At the same time, the condensed material at the bottom of the sedimentation tank is then used as a filter material to filter out suspended solids, and this new treatment method is expected to have an important meaning in the field of wastewater treatment technology.
第１図は三次処理装置の内部構造を示す概略断
面図である。
１：三次処理装置、２：接触酸化槽、３：濾過
槽、１０：連通管、２１：散気管、２２：送気
機、３１：スクリユーコンベア。
FIG. 1 is a schematic sectional view showing the internal structure of the tertiary processing device. 1: Tertiary treatment device, 2: Contact oxidation tank, 3: Filtration tank, 10: Communication pipe, 21: Diffusion pipe, 22: Air blower, 31: Screw conveyor.
Claims (1)
する二次処理水と、ケイ酸、ゼオライト等の化学
的に安定な無機物質とを十分に接触酸化させて、
緑藻類等の植物性微生物にて窒素、リン等を固定
するとともに、前記ケイ酸、ゼオライト等の化学
的に安定な無機物質を核とし前記緑藻類等の植物
性微生物を付着させたものを濾材として浮遊物質
の濾過を行なう廃水の三次処理方法。1. Secondary treated water flowing out from secondary treatment equipment such as activated sludge treatment equipment is fully catalytically oxidized with chemically stable inorganic substances such as silicic acid and zeolite.
Nitrogen, phosphorus, etc. are fixed using plant microorganisms such as green algae, and a chemically stable inorganic substance such as silicic acid or zeolite is used as a core to which plant microorganisms such as green algae are attached and suspended as a filter medium. A tertiary treatment method for wastewater that involves filtration of substances.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57168158A JPS5959296A (en) | 1982-09-25 | 1982-09-25 | Tertiary treatment of waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57168158A JPS5959296A (en) | 1982-09-25 | 1982-09-25 | Tertiary treatment of waste water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5959296A JPS5959296A (en) | 1984-04-05 |
| JPH0249799B2 true JPH0249799B2 (en) | 1990-10-31 |
Family
ID=15862881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57168158A Granted JPS5959296A (en) | 1982-09-25 | 1982-09-25 | Tertiary treatment of waste water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5959296A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19546921C2 (en) * | 1995-06-26 | 1998-10-15 | Entwicklung Von Umwelttechnik | Device for the retention of swirlable growth bodies in bioreactors |
| US8252183B1 (en) * | 2011-10-28 | 2012-08-28 | Kent Bioenergy Corporation | Treating nitorogen-contaminated wastewaters |
| JP5917187B2 (en) * | 2012-02-24 | 2016-05-11 | 株式会社 名邦テクノ | Reprocessing method of sewage treated water |
| CN103304031B (en) * | 2012-03-09 | 2015-09-23 | 中国海洋石油总公司 | A kind of system and method utilizing micro-algae gas treatment waste water |
| CN111348806A (en) * | 2020-03-26 | 2020-06-30 | 南昌航空大学 | A method for zeolite-microalgae synergistic treatment of rare earth mining wastewater |
-
1982
- 1982-09-25 JP JP57168158A patent/JPS5959296A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5959296A (en) | 1984-04-05 |
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