JPH04100591A - Method and apparatus for sewage/wastewater treatment - Google Patents
Method and apparatus for sewage/wastewater treatmentInfo
- Publication number
- JPH04100591A JPH04100591A JP21440890A JP21440890A JPH04100591A JP H04100591 A JPH04100591 A JP H04100591A JP 21440890 A JP21440890 A JP 21440890A JP 21440890 A JP21440890 A JP 21440890A JP H04100591 A JPH04100591 A JP H04100591A
- Authority
- JP
- Japan
- Prior art keywords
- organic matter
- ferric oxide
- oxide powder
- separated
- wastewater
- 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
- 239000010865 sewage Substances 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims description 4
- 238000004065 wastewater treatment Methods 0.000 title claims description 3
- 239000002351 wastewater Substances 0.000 claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 239000000843 powder Substances 0.000 claims abstract 15
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract 14
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims abstract 14
- 239000003513 alkali Substances 0.000 claims abstract 11
- 239000000203 mixture Substances 0.000 claims abstract 9
- 238000007885 magnetic separation Methods 0.000 claims abstract 4
- 239000005416 organic matter Substances 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000001179 sorption measurement Methods 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 239000002516 radical scavenger Substances 0.000 claims 8
- 238000004062 sedimentation Methods 0.000 claims 5
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims 1
- 238000005345 coagulation Methods 0.000 claims 1
- 230000015271 coagulation Effects 0.000 claims 1
- 238000003672 processing method Methods 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 8
- 239000011812 mixed powder Substances 0.000 abstract 6
- 239000002253 acid Substances 0.000 abstract 1
- 230000005484 gravity Effects 0.000 abstract 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract 1
- 239000006247 magnetic powder Substances 0.000 abstract 1
- 238000001556 precipitation Methods 0.000 abstract 1
- 239000002002 slurry Substances 0.000 abstract 1
- 229910000859 α-Fe Inorganic materials 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 10
- 230000008929 regeneration Effects 0.000 description 5
- 238000011069 regeneration method Methods 0.000 description 5
- 239000003463 adsorbent Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical class [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 241001148470 aerobic bacillus Species 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 150000004045 organic chlorine compounds Chemical class 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 241001148471 unidentified anaerobic bacterium Species 0.000 description 1
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
PURPOSE:To clean out organic substances economically by adsorbing the organic substances in sewage/wastewater using a mixture of a ferric oxide powder and a magnetic powder. CONSTITUTION:Sewage/wastewater 19 is led to a reaction tank 20, where a mixed powder 21 of ferric oxide and a ferrite is added. Further an acid 22 is added to adjust the pH 2-8. Organic substances in the sewage/waste-water are adsorbed in the surface of Fe2O3 in the reaction tank 20. The resulting sewage/wastewater 19 is sent to a precipitation tank 24 and the mixed powder containing the organic substances is precipitated by the gravity. The precipitated organic substances-containing mixed powder is taken out as a slurry 28 and it is thrown to an alkali treatment tank 29. There, the organic substances adsorbed in the powder are parted from the powder to reproduce the mixed powder. After the reproduction, only the mixed powder is separated by a magnetic separation apparatus 31 and it is used circularly as a reproduced mixed powder 21.
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
この発明は、下・廃水の処理方法およびそれを使用する
下・廃水処理装置に関する。Detailed Description of the Invention [Object of the Invention] (Industrial Application Field) The present invention relates to a method for treating sewage/wastewater and a sewage/wastewater treatment device using the same.
（従来の技術）
下・廃水中に含まれる有機物の処理として一般に、好気
性菌や嫌気性菌による生物処理が行われ、また高度処理
においては活性炭吸着処理も実施されている。(Prior Art) Biological treatment using aerobic bacteria and anaerobic bacteria is generally used to treat organic matter contained in sewage and wastewater, and activated carbon adsorption treatment is also used as advanced treatment.
ところが、前記の生物処理は、複雑な微生物反応を利用
するために、水質や水温の変動、あるいは表面活性剤、
有機塩素化合物、鉱物油等の生物阻害物質の混入等の外
乱によって処理性能に影響を受けやす□い。また活性炭
処理では、吸着飽和炭の再生には高温賦活処理か不可欠
であり、また再生ロスも大きくて再生コストが高価なも
のとなる問題点があった。However, the above-mentioned biological treatment utilizes complex microbial reactions, so it is difficult to deal with fluctuations in water quality or temperature, or with surfactants,
Processing performance is easily affected by disturbances such as the contamination of biological inhibitory substances such as organic chlorine compounds and mineral oil. In addition, activated carbon treatment requires high temperature activation treatment to regenerate adsorbed saturated carbon, and also has the problem of large regeneration losses and high regeneration costs.
そこで、下水および工場廃水は、現在活性汚泥法を用い
る好気性生物処理が主であるが、生物処理のようには外
乱による影響を受けにくい粉末無機吸着材を用いた物理
化学的処理がパルブ工場廃水に対して実施されている。Therefore, sewage and industrial wastewater are currently treated mainly by aerobic biological treatment using the activated sludge method. Implemented for wastewater.
この無機吸着材としては、賦活アルミナ、活性酸化マグ
ネシウム等が適用される。As this inorganic adsorbent, activated alumina, activated magnesium oxide, etc. are applied.
この粉末無機吸着材を用いる水処理は、従来の凝集剤を
用いるＣＯＤ負荷物（水中有機物質等）の除去において
はその機能上から除去に限界かあり、また活性炭処理で
は吸着容量と吸着強度に限界かあるために、これらに代
わるものとして開発されたものである。Water treatment using this powdered inorganic adsorbent has a limited ability to remove COD loads (organic substances in water, etc.) using conventional flocculants due to its functionality, and activated carbon treatment has limited adsorption capacity and adsorption strength. Due to their limitations, it was developed as an alternative to these.
また活性酸化マグネシウム等の使用済み無機吸着材の再
生は焼成処理で行われるか、活性炭再生と異なり、低温
焼成処理ができるために活性炭の再生コストより安価に
なる。Furthermore, the regeneration of used inorganic adsorbents such as activated magnesium oxide is performed by calcination treatment, or, unlike activated carbon regeneration, low-temperature calcination treatment can be performed, so the regeneration cost is lower than that of activated carbon.
ところで最近、無機吸着材に従来から用いられているマ
グネタイト、アルミナ、シリカ系のものとは異なる鉄系
酸化物を用いた下水、その他の廃水中の有機物処理を対
象とする次のような発明が提案されている。Recently, however, the following invention has been developed that uses iron-based oxides, which are different from the magnetite, alumina, and silica-based inorganic adsorbents traditionally used, to treat organic matter in sewage and other wastewater. Proposed.
］）特開平１．−５０３７６４号公報；発明の名称：下
水処理
出願人：コモンウエルズオーガニゼーション発明者ニブ
リーストリー アンソニー・ジョン
２）特開平１．−２９９６９２号公報]) Unexamined Japanese Patent Publication No. 1. Publication No. -503764; Name of the invention: Sewage treatment Applicant: Commonwealth Organization Inventor Nibley Story Anthony John 2) JP-A-1999-1992. -299692 publication
Claims (4)
との混和物を添加して接触させ、下・廃水中の有機物を
前記酸化第２鉄粉末にて吸着、凝集させた後、有機物を
含む前記混和物を処理水から分離し、分離した前記混和
物をアルカリ処理して有機物を離脱させて再生すること
を特徴とする下・廃水の処理方法。(1) A mixture of ferric oxide powder and a magnetic scavenger is added and brought into contact with the wastewater, and the organic matter in the wastewater is adsorbed and aggregated by the ferric oxide powder. A method for treating sewage/wastewater, characterized in that the mixture containing the above is separated from the treated water, and the separated mixture is treated with an alkali to remove organic matter and regenerated.
、下・廃水中の有機物を前記酸化第２鉄粉末にて吸着、
凝集させた後、有機物を含む前記酸化第２鉄粉末を処理
水から分離し、分離した前記酸化第２鉄粉末をアルカリ
処理して有機物を離脱させて再生することを特徴とする
下・廃水の処理方法。(2) Adding ferric oxide powder to the lower wastewater and bringing it into contact, adsorbing organic matter in the lower wastewater with the ferric oxide powder,
After coagulation, the ferric oxide powder containing organic matter is separated from the treated water, and the separated ferric oxide powder is treated with an alkali to remove the organic matter and regenerated. Processing method.
の混和物に接触させて下・廃水中の有機物を前記酸化第
２鉄粉末にて吸着、凝集させる反応槽と、 前記反応槽において有機物を吸着させた混和物を下・廃
水処理水から沈降分離する沈降槽と、前記沈降槽におい
て下・廃水処理水から分離した有機物の吸着している混
和物をアルカリ処理して有機物を離脱遊離させるアルカ
リ処理槽と、前記アルカリ処理槽において有機物を離脱
遊離させたアルカリ処理水に対して、前記混和物を磁気
吸着してアルカリ処理水から分離し、前記反応槽に返送
する磁気分離装置とを備えて成る下・廃水処理装置。(3) a reaction tank in which the waste water is brought into contact with a mixture of ferric oxide powder and a magnetic scavenger to adsorb and coagulate organic matter in the waste water with the ferric oxide powder; A sedimentation tank that separates the admixture with organic matter adsorbed from the treated waste water by sedimentation, and an alkali treatment of the admixture with adsorbed organic matter separated from the treated waste water in the sedimentation tank to remove and liberate the organic matter. and a magnetic separation device for separating the admixture from the alkali-treated water by magnetic adsorption on the alkali-treated water from which organic matter has been separated and liberated in the alkali treatment tank, and returning the mixture to the reaction tank. Sewage/wastewater treatment equipment is provided.
中の有機物を前記酸化第２鉄粉末にて吸着、凝集させる
反応槽と、 前記反応槽において有機物を吸着させた酸化第２鉄粉末
を下・廃水処理水から沈降分離する沈降槽と、 前記沈降槽において下・廃水処理水から分離した有機物
の吸着している酸化第２鉄をアルカリ処理して有機物を
離脱遊離させるアルカリ処理槽と、前記アルカリ処理槽
において有機物を離脱遊離させたアルカリ処理水に対し
て磁気スカベンジャを混入する磁気スカベンジャ混入手
段と、 前記磁気スカベンジャの混入されたアルカリ処理水に対
して、前記酸化第２鉄粉末と磁気スカベンジャとの混和
物を磁気吸着してアルカリ処理水から分離する磁気分離
装置と、 前記磁気分離装置において分離された混和物に対して、
磁気スカベンジャと酸化第２鉄粉末とを分離し、磁気ス
カベンジャを前記磁気スカベンジャ混入手段に回収し、
酸化第２鉄粉末を前記反応槽に回収する混和物分離装置
とを備えて成る下・廃水処理装置。(4) a reaction tank in which ferric oxide powder is brought into contact with the waste water to adsorb and coagulate organic matter in the waste water; and a reaction tank in which the organic matter is adsorbed in the reaction tank. a sedimentation tank for separating ferrous iron powder from the treated waste water by sedimentation; and an alkali treatment for treating the ferric oxide adsorbed with organic matter separated from the treated waste water in the settling tank with an alkali to remove and liberate the organic matter. a treatment tank; a magnetic scavenger mixing means for mixing a magnetic scavenger into the alkali-treated water from which organic matter has been separated and liberated in the alkali treatment tank; A magnetic separation device that magnetically adsorbs a mixture of iron powder and a magnetic scavenger to separate it from alkaline treated water; and a mixture separated in the magnetic separation device,
separating the magnetic scavenger and the ferric oxide powder, collecting the magnetic scavenger in the magnetic scavenger mixing means;
and a mixture separator for recovering ferric oxide powder into the reaction tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21440890A JPH04100591A (en) | 1990-08-15 | 1990-08-15 | Method and apparatus for sewage/wastewater treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21440890A JPH04100591A (en) | 1990-08-15 | 1990-08-15 | Method and apparatus for sewage/wastewater treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04100591A true JPH04100591A (en) | 1992-04-02 |
Family
ID=16655298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21440890A Pending JPH04100591A (en) | 1990-08-15 | 1990-08-15 | Method and apparatus for sewage/wastewater treatment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04100591A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5855793A (en) * | 1996-04-19 | 1999-01-05 | Nec Corporation | Method of treating waste water to remove harmful ion by coagulating sedimentation |
| JP2013116455A (en) * | 2011-12-05 | 2013-06-13 | Kurita Water Ind Ltd | Flocculant treatment method |
| CN108249531A (en) * | 2018-02-12 | 2018-07-06 | 中南大学 | A kind of magnetic kind regeneration method |
-
1990
- 1990-08-15 JP JP21440890A patent/JPH04100591A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5855793A (en) * | 1996-04-19 | 1999-01-05 | Nec Corporation | Method of treating waste water to remove harmful ion by coagulating sedimentation |
| JP2013116455A (en) * | 2011-12-05 | 2013-06-13 | Kurita Water Ind Ltd | Flocculant treatment method |
| CN108249531A (en) * | 2018-02-12 | 2018-07-06 | 中南大学 | A kind of magnetic kind regeneration method |
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