JPH0471699A - Method for purifying water - Google Patents
Method for purifying waterInfo
- Publication number
- JPH0471699A JPH0471699A JP2184265A JP18426590A JPH0471699A JP H0471699 A JPH0471699 A JP H0471699A JP 2184265 A JP2184265 A JP 2184265A JP 18426590 A JP18426590 A JP 18426590A JP H0471699 A JPH0471699 A JP H0471699A
- Authority
- JP
- Japan
- Prior art keywords
- water
- stage
- carbon adsorption
- flocculated
- active carbon
- 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.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000001179 sorption measurement Methods 0.000 claims abstract description 15
- 239000012528 membrane Substances 0.000 claims abstract description 9
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 7
- 239000011574 phosphorus Substances 0.000 claims abstract description 7
- 239000005416 organic matter Substances 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 6
- 238000000746 purification Methods 0.000 claims description 5
- 230000001112 coagulating effect Effects 0.000 claims 1
- 239000010802 sludge Substances 0.000 abstract description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 4
- 238000005189 flocculation Methods 0.000 abstract description 4
- 230000016615 flocculation Effects 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 abstract description 4
- 239000002351 wastewater Substances 0.000 abstract description 4
- 239000003795 chemical substances by application Substances 0.000 abstract description 3
- 239000008394 flocculating agent Substances 0.000 abstract description 3
- 238000002156 mixing Methods 0.000 abstract description 3
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 2
- 238000010979 pH adjustment Methods 0.000 abstract description 2
- 229910052799 carbon Inorganic materials 0.000 abstract 4
- 239000003513 alkali Substances 0.000 abstract 1
- 244000144992 flock Species 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 8
- 238000005345 coagulation Methods 0.000 description 5
- 230000015271 coagulation Effects 0.000 description 5
- 241000894006 Bacteria Species 0.000 description 3
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 3
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000006228 supernatant Substances 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000008214 highly purified water Substances 0.000 description 1
- 239000010800 human waste Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000009287 sand filtration Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Water Treatment By Sorption (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、水の浄化方法に係り、特に、少なくとも有機
物又は有機物とリンを含有する水を物理化学的に浄化す
る方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for purifying water, and particularly to a method for physicochemically purifying water containing at least organic matter or organic matter and phosphorus.
従来、有機性廃水は生物学的に処理したのち、残留した
生物不活性の有機物、リンを高度に処理するため、硫酸
ばん土あるいは塩化第２鉄などの無機凝集剤を添加して
凝集処理を行い、さらにその分離水中に残留するＣＯＤ
成分（有機物）を除去するために、砂ろ過、活性炭吸着
処理等を行っている。Conventionally, organic wastewater is treated biologically and then flocculation treatment is performed by adding inorganic flocculants such as sulfuric acid or ferric chloride in order to highly treat the remaining biologically inert organic matter and phosphorus. COD remaining in the separated water
In order to remove components (organic substances), sand filtration, activated carbon adsorption treatment, etc. are performed.
しかしながら、上記のような高度処理法においても、活
性炭処理水には、尚微量のＳＳ、多数の一般細菌が存在
し、完全な処理水質を得るには至らなかった。However, even with the above-mentioned advanced treatment method, activated carbon-treated water still contains trace amounts of SS and a large number of common bacteria, and perfect treated water quality cannot be obtained.
そこで、本発明は、凝集処理で残留したＣＯＤ成分を活
性炭で吸着し、かつＳＳが０で、般細菌が極めて少ない
高度に浄化された処理水を得ることのできる水の浄化方
法を提供することを目的とする。SUMMARY OF THE INVENTION Therefore, the present invention provides a water purification method that adsorbs COD components remaining in coagulation treatment with activated carbon, and can obtain highly purified treated water with an SS of 0 and extremely few common bacteria. With the goal.
上記目的を達成するために、本発明では、有機物又は有
機物、とリンを含有する水を無機凝集剤によって凝集処
理したのち、凝集フロックが存在した状態で活性炭吸着
工程に導入せしめ、該活性炭吸着工程流出水を膜分離工
程で処理することを特徴とする水の浄化方法としたもの
である。In order to achieve the above object, in the present invention, organic matter or water containing organic matter and phosphorus is flocculated using an inorganic flocculant, and then introduced into an activated carbon adsorption step in the state where flocs are present, and the activated carbon adsorption step This water purification method is characterized by treating runoff water in a membrane separation process.
本発明で用いる活性炭吸着工程は、上向流型で、特に流
動床式の活性炭処理装置を用いるのが好適である。The activated carbon adsorption step used in the present invention is of an upward flow type, and it is particularly preferable to use a fluidized bed type activated carbon treatment apparatus.
次に、本発明の水の浄化方法を、その−例を示す工程図
である第１図を用いて説明する。Next, the water purification method of the present invention will be explained using FIG. 1, which is a process diagram showing an example thereof.
第１図では廃水１はＢＯＤ酸化あるいは硝化脱窒処理な
どの生物処理工程２で、ＢＯＤ、窒素等が除去されたの
ち、沈殿槽、遠心分離機、ＵＦ膜などの固液分離工程３
に導入され、生物汚泥は分離され、分離された汚泥は返
送汚泥４として生物処理工程２に返送される。分離水５
は凝集混合槽６に導入され、ここで硫酸バンドあるいは
塩化第２鉄などの無機凝集剤７、及び必要により、ｐＨ
調整用アルカリ剤８が添加され、硫酸バンドではｐＨ５
，５〜６．５、塩化第２鉄ではｐＨ４，０〜５．０に調
整されて、残留するＣＯＤ成分、リンが凝集される。凝
集フロックを含有した凝集水９は下向流又は上向流で活
性炭吸着工程１０に導入され、凝集水に溶存残留してい
るＣＯＤ成分が吸着される。活性炭吸着工程１０の流出
水１１は膜分離工程１２で処理され、透過水１３は放流
され、濃縮汚泥１４は排出される。In Figure 1, wastewater 1 undergoes a biological treatment process 2 such as BOD oxidation or nitrification and denitrification to remove BOD, nitrogen, etc., and then undergoes a solid-liquid separation process 3 using a sedimentation tank, centrifuge, UF membrane, etc.
The biological sludge is separated, and the separated sludge is returned to the biological treatment process 2 as return sludge 4. Separated water 5
is introduced into a flocculation mixing tank 6, where an inorganic flocculant 7 such as sulfuric acid or ferric chloride and, if necessary, a pH
Adjustment alkaline agent 8 is added, and the pH of the sulfuric acid band is 5.
, 5 to 6.5, and ferric chloride is adjusted to pH 4.0 to 5.0 to aggregate the remaining COD components and phosphorus. The flocculated water 9 containing flocculated flocs is introduced into the activated carbon adsorption step 10 in a downward or upward flow, and the COD components remaining dissolved in the flocculated water are adsorbed. Outflow water 11 from the activated carbon adsorption step 10 is treated in a membrane separation step 12, permeated water 13 is discharged, and concentrated sludge 14 is discharged.
なお、活性炭吸着工程１０は従来のように凝集分離した
分離水ではなく、凝集フロックの状態で導入するので、
下向流でかつ流動床を形成させるようにするのが好まし
い。In addition, in the activated carbon adsorption step 10, water is introduced in the form of flocs rather than separated water that has been coagulated and separated as in the conventional method.
Preferably, the flow is downward and a fluidized bed is formed.
以下、本発明を実施例で具体的に説明するが、本発明は
これらの実施例に限定されるものではない。EXAMPLES The present invention will be specifically explained below with reference to Examples, but the present invention is not limited to these Examples.
実施例１
し尿の無希釈脱窒処理水（生物処理水）を本発明の第１
図に従って次の条件で処理した。結果を表１に示す。Example 1 Undiluted denitrified water (biologically treated water) of human waste was used as the first method of the present invention.
It was processed under the following conditions according to the figure. The results are shown in Table 1.
硫酸バンド添加量 ５０００ ｍｇ／ ’Ｉ
Ｉ凝集ｐＨ６，０
活性炭膜着塔空間速度（ＳＶ） ３／時ＵＰ膜入口
圧 ２．５ｋｇｆ／ｃｍ”
表 １
活性炭吸着塔空間速度（ＳＶ） ５／時ＵＰ膜入口
圧 ２．０ｋｇｆ／ｃｍ２
表 ２
ト１ 従来法 無希釈脱窒処理水を凝集沈殿処理（硫酸
バンド添加量５０００
ｍｇ／Ａ）したのち、上澄水を
活性炭処理（ＳＶ ３／時）した。Addition amount of sulfate band 5000 mg/'I
I aggregation pH 6.0 Activated carbon membrane deposition column space velocity (SV) 3/hour UP membrane inlet pressure 2.5 kgf/cm" Table 1 Activated carbon adsorption column space velocity (SV) 5/hour UP membrane inlet pressure 2.0 kgf/cm2 Table 2 To 1 Conventional method After the undiluted denitrification treated water was subjected to coagulation and precipitation treatment (addition amount of sulfuric acid band 5000 mg/A), the supernatant water was treated with activated carbon (SV 3/hour).
実施例２
浄化槽汚泥を４日間曝気したのち、遠心分離機で脱水し
、分離液を次の条件で処理した。結果を表２に示す。Example 2 After aerating septic tank sludge for 4 days, it was dehydrated using a centrifuge, and the separated liquid was treated under the following conditions. The results are shown in Table 2.
硫酸バンド添加量 １０００ ｍｇ／ １凝
集ｐＨ６，０
ト２ 分離液を凝集沈殿処理（硫酸バンド添加量１００
０ｍｇ／ １ ） したのち、上澄水を活性炭処理（Ｓ
Ｖ ５／時）した。Added amount of sulfate band: 1000 mg/1 Coagulation pH 6.0
0mg/1) After that, the supernatant water was treated with activated carbon (S
V 5/hour).
本発明によれば、Ｃ０ＤＸｈを低濃度まで処理できるほ
か、ＳＳを完全に、また一般細菌順をほぼ完全に排除で
き、極めて完全かつ高度に浄化された水を得ることがで
きる。According to the present invention, not only can CODXh be treated to a low concentration, but also SS can be completely eliminated and general bacteria can be almost completely eliminated, and extremely completely and highly purified water can be obtained.
第１図は、本発明の浄化方法を示す工程図である。
１・・・廃水、２・・・生物処理工程、３・・・固液分
離工程、４・・・返送汚泥、５・・・分離水、６・・・
凝集混合槽、７・・・無機凝集剤、８・・・アルカリ剤
、９・・・凝集水、１０・・・活性炭吸着工程、１１・
・・流出水、１２・・・膜分離工程、１３・・・透過水
、１４・・・濃縮汚泥
特許出願人 荏原インフィルコ株式会社同 株
式会社 荏原総合研究所FIG. 1 is a process diagram showing the purification method of the present invention. 1... Wastewater, 2... Biological treatment process, 3... Solid-liquid separation process, 4... Returned sludge, 5... Separated water, 6...
Coagulation mixing tank, 7... Inorganic flocculant, 8... Alkaline agent, 9... Coagulation water, 10... Activated carbon adsorption step, 11.
... Effluent water, 12... Membrane separation process, 13... Permeated water, 14... Thickened sludge Patent applicant Ebara Infilco Co., Ltd. Ebara Research Institute, Inc.
Claims (1)
剤によって凝集処理したのち、凝集フロックが存在した
状態で活性炭吸着工程に導入せしめ、該活性炭吸着工程
流出水を膜分離工程で処理することを特徴とする水の浄
化方法。1. After coagulating organic matter or water containing organic matter and phosphorus with an inorganic flocculant, introducing it into an activated carbon adsorption process in the presence of flocs, and treating the water effluent from the activated carbon adsorption process in a membrane separation process. A water purification method characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2184265A JPH0751239B2 (en) | 1990-07-13 | 1990-07-13 | How to purify water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2184265A JPH0751239B2 (en) | 1990-07-13 | 1990-07-13 | How to purify water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0471699A true JPH0471699A (en) | 1992-03-06 |
| JPH0751239B2 JPH0751239B2 (en) | 1995-06-05 |
Family
ID=16150295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2184265A Expired - Lifetime JPH0751239B2 (en) | 1990-07-13 | 1990-07-13 | How to purify water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0751239B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002028651A (en) * | 2000-07-17 | 2002-01-29 | Mitsubishi Rayon Co Ltd | Water purification system and water purification method |
| SG125100A1 (en) * | 2003-01-09 | 2006-09-29 | Kuraray Co | Waste water tratment method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106565049A (en) * | 2016-11-08 | 2017-04-19 | 河南顺天生物科技有限公司 | Nicotine production waste water flocculating decolorizaiton and evaporation membrane treatment technology |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02172597A (en) * | 1988-12-26 | 1990-07-04 | Ebara Infilco Co Ltd | Treatment of organic sewage |
-
1990
- 1990-07-13 JP JP2184265A patent/JPH0751239B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02172597A (en) * | 1988-12-26 | 1990-07-04 | Ebara Infilco Co Ltd | Treatment of organic sewage |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002028651A (en) * | 2000-07-17 | 2002-01-29 | Mitsubishi Rayon Co Ltd | Water purification system and water purification method |
| SG125100A1 (en) * | 2003-01-09 | 2006-09-29 | Kuraray Co | Waste water tratment method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0751239B2 (en) | 1995-06-05 |
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