JPH01189398A - Treatment of waste water - Google Patents
Treatment of waste waterInfo
- Publication number
- JPH01189398A JPH01189398A JP63011711A JP1171188A JPH01189398A JP H01189398 A JPH01189398 A JP H01189398A JP 63011711 A JP63011711 A JP 63011711A JP 1171188 A JP1171188 A JP 1171188A JP H01189398 A JPH01189398 A JP H01189398A
- Authority
- JP
- Japan
- Prior art keywords
- treated water
- deodorizing tower
- sludge
- ferric
- biological treatment
- 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
- 239000002351 wastewater Substances 0.000 title claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000010802 sludge Substances 0.000 claims abstract description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 19
- 230000001877 deodorizing effect Effects 0.000 claims abstract description 16
- 230000009965 odorless effect Effects 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 229910052742 iron Inorganic materials 0.000 claims abstract description 7
- KAEAMHPPLLJBKF-UHFFFAOYSA-N iron(3+) sulfide Chemical compound [S-2].[S-2].[S-2].[Fe+3].[Fe+3] KAEAMHPPLLJBKF-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000007787 solid Substances 0.000 claims abstract description 5
- 239000008213 purified water Substances 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 14
- 235000014413 iron hydroxide Nutrition 0.000 claims description 12
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 claims description 12
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 11
- 238000004065 wastewater treatment Methods 0.000 claims description 11
- 239000003513 alkali Substances 0.000 claims description 7
- 150000002505 iron Chemical class 0.000 claims description 2
- 229960004887 ferric hydroxide Drugs 0.000 abstract description 10
- IEECXTSVVFWGSE-UHFFFAOYSA-M iron(3+);oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Fe+3] IEECXTSVVFWGSE-UHFFFAOYSA-M 0.000 abstract description 10
- 238000006243 chemical reaction Methods 0.000 abstract description 7
- 239000000126 substance Substances 0.000 abstract description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 21
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 4
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- 239000005708 Sodium hypochlorite Substances 0.000 description 3
- 238000004332 deodorization Methods 0.000 description 3
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 3
- 239000005955 Ferric phosphate Substances 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229940032958 ferric phosphate Drugs 0.000 description 2
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 2
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 2
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 2
- 229910000399 iron(III) phosphate Inorganic materials 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- 239000010800 human waste Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 description 1
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 1
- FLTRNWIFKITPIO-UHFFFAOYSA-N iron;trihydrate Chemical compound O.O.O.[Fe] FLTRNWIFKITPIO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、廃水を生物処理槽で活性汚泥により生物処理
し、生物処理後の処理水に、それに含まれるＣＯＤの原
因となる成分を凝集させるための鉄塩から成る凝集剤を
混入し、その後、処理水中に残った未反応の凝集剤中の
鉄分を、アルカリによって不溶性の水酸化鉄にし、処理
水から前記水酸化鉄を含む汚泥を固液分離して浄化水を
回収し、他方、前記生物処理槽から発生する硫化水素ガ
スを回収して脱臭塔で無臭化する廃水処理方法に関する
。Detailed Description of the Invention [Industrial Application Field] The present invention biologically treats wastewater with activated sludge in a biological treatment tank, and aggregates COD-causing components contained in the treated water after the biological treatment. After that, the iron content in the unreacted flocculant remaining in the treated water is converted to insoluble iron hydroxide with an alkali, and the sludge containing the iron hydroxide is removed from the treated water. The present invention relates to a wastewater treatment method in which purified water is recovered through solid-liquid separation, and hydrogen sulfide gas generated from the biological treatment tank is recovered and deodorized in a deodorization tower.
従来の上記廃水処理方法では、脱臭塔で硫化水素ガスを
次亜塩素酸ナトリウム及び水酸化ナトリウムによって酸
化させて無臭化していた。In the conventional wastewater treatment method, hydrogen sulfide gas is oxidized with sodium hypochlorite and sodium hydroxide in a deodorizing tower to make it odorless.
しかし、脱臭のための次亜塩素酸ナトリウム及び水酸化
ナトリウムから成る薬剤は高価で、廃水処理全体におけ
る経費が高くつく欠点があった。However, the deodorizing agents consisting of sodium hypochlorite and sodium hydroxide have the disadvantage that they are expensive and increase the overall cost of wastewater treatment.
本発明の目的は、廃水処理に必要な薬剤の量を減らせる
ようにする点にある。It is an object of the present invention to make it possible to reduce the amount of chemicals required for wastewater treatment.
本発明の廃水処理方法の特徴手段は、水酸化鉄を含む汚
泥を、脱臭塔に供給し、前記脱臭塔における硫化水素ガ
スを、水酸化鉄と反応させて無臭の硫化第２鉄を生成さ
せることにあり、その作用効果は、次の通りである。The characteristic means of the wastewater treatment method of the present invention is to supply sludge containing iron hydroxide to a deodorizing tower, and react hydrogen sulfide gas in the deodorizing tower with iron hydroxide to produce odorless ferric sulfide. In particular, its functions and effects are as follows.
つまり、従来の次亜塩素酸ナトリウム及び水酸化ナトリ
ウムの代わりに、汚泥中の水酸化鉄を、脱臭塔における
硫化水素ガスの無臭化に利用するために、廃水処理全体
における薬剤の使用量を減らすことができる。In other words, iron hydroxide in sludge is used instead of conventional sodium hypochlorite and sodium hydroxide to deodorize hydrogen sulfide gas in the deodorization tower, reducing the amount of chemicals used in overall wastewater treatment. be able to.
従って、廃水処理におけるランニングコストを低下させ
ることができた。Therefore, running costs in wastewater treatment could be reduced.
次に、本発明の実施例を、図面に基づいて説明する。 Next, embodiments of the present invention will be described based on the drawings.
図面に示すように、し尿等の廃水を貯留する貯留槽（１
）を設け、貯留槽（１）からの投入廃水を活性汚泥によ
り生物処理する生物処理槽（２）を設け、生物処理槽（
２）からの処理水から活性汚泥を固液分離してろ過処理
水を回収し、且つ、濃縮された活性汚泥は生物処理槽（
２）に第１返送路を介して返送する第１限外ろ過器（３
）を設け、第１限外ろ過器（３）からのろ過処理水に凝
集剤及びアルカリを混入する反応槽（４）を設け、反応
槽（４）からの処理水を固液分離して浄化水を回収する
第２限外ろ過器（５）を設け、また、貯留槽（１）及び
生物処理槽（２）から発生する臭気ガスを薬剤の投入に
よって無臭化する脱臭塔（６）を設けて廃水処理装置を
構成しである。As shown in the drawing, a storage tank (1
), a biological treatment tank (2) for biologically treating wastewater input from the storage tank (1) with activated sludge, and a biological treatment tank (
The activated sludge is separated into solid and liquid from the treated water from 2) to recover the filtered water, and the concentrated activated sludge is sent to the biological treatment tank (
2) via the first return path to the first ultrafilter (3).
) and a reaction tank (4) for mixing a flocculant and alkali into the filtered water from the first ultrafilter (3), and purify the treated water from the reaction tank (4) by separating it into solid and liquid. A second ultrafilter (5) is installed to collect water, and a deodorizing tower (6) is installed to make odor gas generated from the storage tank (1) and biological treatment tank (2) odorless by introducing chemicals. This constitutes a wastewater treatment device.
尚、（Ｐｌ）は、貯留槽（１）から廃水を生物処理槽（
２）に投入する廃水投入ポンプであり、（Ｐ２）は第１
Ｗｉ環ポンプ、（Ｐ３）は第２循環ポンプで、夫々処理
水を各限外ろ過器（３） 、 （５）へ加圧供給しであ
る。In addition, (Pl) is the biological treatment tank (
2) is the wastewater input pump, and (P2) is the first
The Wi ring pump (P3) is a second circulation pump that supplies treated water under pressure to the ultrafilters (3) and (5), respectively.
次に、廃水処理方法を説明すると、廃水を前記生物処理
槽（２）で活性汚泥により生物処理し、生物処理後の処
理水から活性汚泥を第１限外ろ過器（３）で固液分離し
、第１限外ろ過器（３）からのろ過処理水に、それに含
まれるＣＯＤの原因となる成分を凝集させるための鉄塩
がら成る凝集剤を混入し、その後、処理水中に残った未
反応の凝集剤中の鉄分を、アルカリによって不溶性の水
酸化鉄にし、その処理水から水酸化鉄を含む汚泥を第２
限外ろ過器（５）により固液分離して浄化水を回収し、
他方、前記水酸化鉄を含む汚泥を、脱臭塔（６）に供給
し、脱臭塔（６）における臭気ガス中の硫化水素（Ｈｚ
Ｓ）ガスを、水酸化鉄と反応させて無臭の硫化第２鉄（
ＦｅｚＳ３）を生成させる。Next, to explain the wastewater treatment method, wastewater is biologically treated with activated sludge in the biological treatment tank (2), and the activated sludge is separated into solid and liquid from the treated water after biological treatment in the first ultrafilter (3). Then, a flocculant consisting of iron salt is mixed into the filtered water from the first ultrafilter (3) to flocculate the COD-causing components contained therein, and then the untreated water remaining in the treated water is mixed. The iron content in the flocculant in the reaction is converted into insoluble iron hydroxide using an alkali, and the sludge containing iron hydroxide is extracted from the treated water as a secondary
Purified water is recovered by solid-liquid separation using an ultrafilter (5),
On the other hand, the sludge containing iron hydroxide is supplied to a deodorizing tower (6), and the hydrogen sulfide (Hz) in the odor gas in the deodorizing tower (6) is
S) Gas is reacted with iron hydroxide to produce odorless ferric sulfide (
FezS3) is generated.
前記凝集剤として市販の塩化第２鉄（ＦｅＣβ３）を使
用し、アルカリとしては水酸化ナトリウム（ＮａＯｔｌ
）を使用し、市販の塩化第２鉄（ＦｅＣ１２）溶液中に
は、塩酸（ＩＩＣ１）が混入されていて強酸を示し、反
応槽（４）中では、ＣＯＤの原因となる有機物が塩化第
２鉄溶液によって凝集されるだけでなく、廃水中のリン
酸（Ｈ３ｐｏｔ）がリン酸第２鉄（ＦｅＰＯ４）になっ
て水に不溶化し、水酸化ナトリウム（ＮａＯＨ）の混入
によって未反応の塩化第２鉄（ＦｅＣｊ！ ：＋）が水
酸化第２鉄（Ｆｅ（ＯＨ） ３）のフロックされると共
に、ｐＨ４〜５に調整される。Commercially available ferric chloride (FeCβ3) was used as the flocculant, and sodium hydroxide (NaOtl) was used as the alkali.
), the commercially available ferric chloride (FeC12) solution contains hydrochloric acid (IIC1) and is a strong acid. In addition to being flocculated by the iron solution, phosphoric acid (H3pot) in wastewater becomes ferric phosphate (FePO4) and becomes insoluble in water, and unreacted ferric chloride is mixed with sodium hydroxide (NaOH). Iron (FeCj!:+) is flocked with ferric hydroxide (Fe(OH)3) and adjusted to pH 4-5.
前記反応槽（４）から水酸化第２鉄（Ｆｅ （Ｏ）ｌ）
：ｌ）を含む汚泥が脱臭塔（６）に供給されることに
よって、臭気ガス中の硫化水素ガスが、
３Ｈ２Ｓ ＋２Ｆｅ（ＯＨ） ＝−Ｆｅ２Ｓ＝↓＋６Ｈ
２０のように反応して、無臭化した黒色の硫化第２鉄（
ＦｅｚＳ＋）の沈澱物に変化すると共に、臭気ガス中の
アンモニア（ＮＨ３）ガスが、水酸化°第２鉄（Ｐｅ
（Ｏｆｆ） ３）を含む汚泥中に残留している塩化水素
（ＨＣＪ ）と中和反応して無臭化する。Ferric hydroxide (Fe(O)l) from the reaction tank (4)
:l) is supplied to the deodorizing tower (6), hydrogen sulfide gas in the odor gas is reduced to 3H2S +2Fe(OH) =-Fe2S=↓+6H
20 reacts to produce odorless black ferric sulfide (
At the same time, the ammonia (NH3) gas in the odor gas is converted to ferric (Pe) hydroxide.
(Off) A neutralization reaction occurs with hydrogen chloride (HCJ) remaining in the sludge containing 3) to make it odorless.
前記脱臭塔（６）からの脱臭廃液は、その中に未反応の
水酸化第２鉄（Ｆｅ（Ｊ）Ｈ）３）が含まれるために、
生物処理槽（２）に返送され、生物処理槽（２）におけ
る処理水中の硫化水素（Ｈ２Ｓ）が水酸化第２鉄（Ｆｅ
（ＯＨ） ３）と反応して硫化第２鉄（ＦｅｚＳｓ）
となり、生物処理槽（２）からの硫化水素（Ｈ，Ｓ）ガ
スの放散が抑制される。Since the deodorized waste liquid from the deodorizing tower (6) contains unreacted ferric hydroxide (Fe(J)H)3),
The hydrogen sulfide (H2S) in the treated water in the biological treatment tank (2) is returned to the biological treatment tank (2), and the hydrogen sulfide (H2S) in the treated water is converted into ferric hydroxide (Fe
(OH) 3) reacts with ferric sulfide (FezSs)
Therefore, the diffusion of hydrogen sulfide (H, S) gas from the biological treatment tank (2) is suppressed.
尚、生物処理槽（２）からは、余剰汚泥が引抜かれる。Incidentally, excess sludge is extracted from the biological treatment tank (2).
前記凝集剤としては、塩化第２鉄（ＦｅＣｌ 、）の代
わりに、硫酸第１鉄（ＦｅＳＯ４）や、硫酸第２鉄（Ｆ
ｅ２（ＳＯ４）ｓ）を使用しても良い。As the flocculant, ferrous sulfate (FeSO4) or ferric sulfate (F
e2(SO4)s) may also be used.
前記第１限外ろ過器（３）及び第１循環ポンプ（Ｐ２）
を設けない場合であっても良く、ただし、この場合は、
処理水に凝集剤を混入した時のＣＯＤの原因となる成分
の除去効率が悪い。The first ultrafilter (3) and the first circulation pump (P2)
However, in this case,
When a flocculant is mixed into treated water, the removal efficiency of components that cause COD is poor.
廃水が、し尿や発酵工業廃水の場合には、その中に炭酸
水素ナトリウム（ＮａＨＣＯ：＋）が含まれていること
があり、この場合には、反応槽（４）でアルカリ（Ｎａ
ＯＨ）を混入せずとも未反応の凝集剤中の鉄分が、水酸
化第２鉄（Ｆｅ（ＯＨ） ３）になりやすく、アルカリ
（ＮａＯＨ）を混入しない場合であっても良い。When the wastewater is human waste or fermentation industrial wastewater, it may contain sodium hydrogen carbonate (NaHCO:+), and in this case, the reaction tank (4)
The iron content in the unreacted flocculant easily becomes ferric hydroxide (Fe(OH) 3) even if no alkali (NaOH) is mixed therein.
つまり、アルカリ（ＮａＯ旧を混入しない場合の反応式
は、
Ｎａ１ｌＣＯ：＋ ＋Ｈ２Ｏ−１１２ＣＯ３＋Ｎａ”
＋０ｔｌ−ＦｅＣｌｘト３０Ｈ−−Ｆｅ（Ｏ１＋）：＋
＋３Ｃ１−となる。In other words, the reaction formula when alkali (NaO) is not mixed is: Na1lCO:+ +H2O-112CO3+Na"
+0tl-FeClxt30H--Fe(O1+):+
+3C1-.
尚、特許請求の範囲の項に図面との対照を便利にする為
に符号を記すが、該記入により本発明は添付図面の構造
に限定されるものではない。Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.
図面は本発明に係る廃水処理方法の実施例の概略図を示
す。
（２）・・・・・・生物処理槽、（６）・・・・・・脱
臭塔。The drawing shows a schematic diagram of an embodiment of the wastewater treatment method according to the invention. (2)...Biological treatment tank, (6)...Deodorization tower.
Claims (1)
生物処理後の処理水に、それに含まれるＣＯＤの原因と
なる成分を凝集させるための鉄塩から成る凝集剤を混入
し、その後、処理水中に残った未反応の凝集剤中の鉄分
を、アルカリによって不溶性の水酸化鉄にし、処理水か
ら前記水酸化鉄を含む汚泥を固液分離して浄化水を回収
し、他方、前記生物処理槽（２）から発生する硫化水素
（Ｈ＿２Ｓ）ガスを回収して脱臭塔（６）で無臭化する
廃水処理方法であって、前記水酸化鉄を含む汚泥を、前
記脱臭塔（６）に供給し、前記脱臭塔（６）における硫
化水素（Ｈ＿２Ｓ）ガスを、水酸化鉄と反応させて無臭
の硫化第２鉄（Ｆｅ＿２Ｓ＿３）を生成させる廃水処理
方法。The wastewater is biologically treated with activated sludge in the biological treatment tank (2),
A flocculant made of iron salt is mixed into the treated water after biological treatment to flocculate the COD-causing components contained therein, and then the iron content in the unreacted flocculant remaining in the treated water is removed by alkali treatment. The sludge containing the iron hydroxide is separated into solid and liquid from the treated water to recover purified water, and on the other hand, the hydrogen sulfide (H_2S) gas generated from the biological treatment tank (2) is recovered. A wastewater treatment method in which the sludge containing iron hydroxide is supplied to the deodorizing tower (6) and hydrogen sulfide (H_2S) gas is deodorized in the deodorizing tower (6). is reacted with iron hydroxide to produce odorless ferric sulfide (Fe_2S_3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63011711A JPH01189398A (en) | 1988-01-20 | 1988-01-20 | Treatment of waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63011711A JPH01189398A (en) | 1988-01-20 | 1988-01-20 | Treatment of waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01189398A true JPH01189398A (en) | 1989-07-28 |
Family
ID=11785630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63011711A Pending JPH01189398A (en) | 1988-01-20 | 1988-01-20 | Treatment of waste water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01189398A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007330887A (en) * | 2006-06-14 | 2007-12-27 | Sumitomo Heavy Ind Ltd | Waste water treatment device and waste water treatment method |
| JP2016179432A (en) * | 2015-03-24 | 2016-10-13 | クボタ環境サ−ビス株式会社 | Deodorization apparatus, deodorization system, and deodorization method |
| JP2018122275A (en) * | 2017-02-03 | 2018-08-09 | 田中 聡 | Method for producing deodorant |
| CN112479756A (en) * | 2020-09-17 | 2021-03-12 | 北京中联蔚蓝科技有限公司 | Method for treating black-odor oxygen-free sludge by using microorganisms |
-
1988
- 1988-01-20 JP JP63011711A patent/JPH01189398A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007330887A (en) * | 2006-06-14 | 2007-12-27 | Sumitomo Heavy Ind Ltd | Waste water treatment device and waste water treatment method |
| JP4558681B2 (en) * | 2006-06-14 | 2010-10-06 | 住友重機械工業株式会社 | Waste water treatment apparatus and waste water treatment method |
| JP2016179432A (en) * | 2015-03-24 | 2016-10-13 | クボタ環境サ−ビス株式会社 | Deodorization apparatus, deodorization system, and deodorization method |
| JP2018122275A (en) * | 2017-02-03 | 2018-08-09 | 田中 聡 | Method for producing deodorant |
| CN112479756A (en) * | 2020-09-17 | 2021-03-12 | 北京中联蔚蓝科技有限公司 | Method for treating black-odor oxygen-free sludge by using microorganisms |
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