JPS63182100A - Treatment of water-soluble cutting/grinding waste liquid - Google Patents
Treatment of water-soluble cutting/grinding waste liquidInfo
- Publication number
- JPS63182100A JPS63182100A JP62013824A JP1382487A JPS63182100A JP S63182100 A JPS63182100 A JP S63182100A JP 62013824 A JP62013824 A JP 62013824A JP 1382487 A JP1382487 A JP 1382487A JP S63182100 A JPS63182100 A JP S63182100A
- Authority
- JP
- Japan
- Prior art keywords
- treatment
- aeration
- water
- cod
- liquid
- 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 53
- 239000007788 liquid Substances 0.000 title claims abstract description 24
- 239000002699 waste material Substances 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 41
- 238000005273 aeration Methods 0.000 claims abstract description 27
- 238000005188 flotation Methods 0.000 claims abstract description 15
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 11
- 239000011574 phosphorus Substances 0.000 claims abstract description 11
- 235000015097 nutrients Nutrition 0.000 claims abstract description 5
- 230000015271 coagulation Effects 0.000 claims description 8
- 238000005345 coagulation Methods 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 4
- 239000010802 sludge Substances 0.000 abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 15
- 238000004062 sedimentation Methods 0.000 abstract description 6
- 238000005189 flocculation Methods 0.000 abstract description 5
- 230000016615 flocculation Effects 0.000 abstract description 5
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 abstract description 2
- 239000000460 chlorine Substances 0.000 abstract description 2
- 229910052801 chlorine Inorganic materials 0.000 abstract description 2
- 230000003647 oxidation Effects 0.000 abstract description 2
- 238000007254 oxidation reaction Methods 0.000 abstract description 2
- 238000001179 sorption measurement Methods 0.000 abstract description 2
- 239000006228 supernatant Substances 0.000 abstract description 2
- 241001148470 aerobic bacillus Species 0.000 abstract 1
- 239000003513 alkali Substances 0.000 abstract 1
- 238000007865 diluting Methods 0.000 abstract 1
- 239000000047 product Substances 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- 244000005700 microbiome Species 0.000 description 5
- 239000002351 wastewater Substances 0.000 description 5
- 238000010790 dilution Methods 0.000 description 4
- 239000012895 dilution Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000011221 initial treatment Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000007704 transition 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
- Separation Of Suspended Particles By Flocculating Agents (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、ＣＯＤ及びＢＯＤの除去性能を向上させる為
に従来の処理方法に長時間曝気方式の生物処理を組み込
んだ水溶性切削・研削廃液の処理方法に関する。Detailed Description of the Invention (Field of Industrial Application) The present invention is directed to the treatment of water-soluble cutting/grinding waste fluid that incorporates biological treatment using a long-time aeration method into the conventional treatment method in order to improve the removal performance of COD and BOD. Regarding the processing method.
（従来技術）
従来の水溶性切削・研削廃液の処理システムを第３図に
示す、切削及び研削機械より排出される水溶性切削拳研
削廃液１８は、廃液の特質に従かい当該廃液のみを凝集
加圧浮上処理１９により油分及びＣＯＤの１次処理を行
ない（第１工程）、１次処理液２０に他工程排水２１を
混合し。(Prior Art) A conventional water-soluble cutting/grinding waste liquid treatment system is shown in FIG. 3. The water-soluble cutting/grinding waste liquid 18 discharged from cutting and grinding machines is aggregated only according to the characteristics of the waste liquid. Primary treatment of oil and COD is performed by pressure flotation treatment 19 (first step), and other process waste water 21 is mixed with primary treatment liquid 20.
４〜８時間の滞留時間を有する曝気槽２２と沈殿槽２３
の組み合わせによる標準活性汚泥処理方式の生物処理で
ＣＯＤ及びＢＯＤの２次処理を行なう（第２工程）こと
によりなるシステムである（標準活性汚泥処理方式）。Aeration tank 22 and settling tank 23 with a residence time of 4 to 8 hours
This is a system (standard activated sludge treatment method) that performs secondary treatment of COD and BOD (second step) by biological treatment of the standard activated sludge treatment method using a combination of the following.
（発明が解決しようとする問題点）
しかしながら、上記のシステムにおいては、水溶性切削
・研削廃液１８の処理量が他工程排水２１の処理量に対
し寄与率として多くなると、窒素系有機物及び分解困難
な有機物の混合率が比例して増加してくる為、第２工程
でのＣＯＤ及びＢＯＤの除去性能が低下する。(Problems to be Solved by the Invention) However, in the above system, if the amount of water-soluble cutting/grinding waste fluid 18 treated increases as a contribution rate to the amount of other process wastewater 21 treated, nitrogen-based organic matter and decomposition become difficult. Since the mixing ratio of organic substances increases proportionally, the removal performance of COD and BOD in the second step decreases.
また好気性微生物を利用しているので、水温は２０〜３
５℃が好適で冬期及び夏期における低温及び高温は微生
物の活性度が低下し、その為排水基準を遵守することが
困難な事態に陥ることがある。また、該処理システムに
おいて、凝集加圧浮上処理液２０の中にはＣＯＤ及びＢ
ＯＤを除去するために、微生物の栄養源をＢＯＤ ：
Ｐの比として一般的に１００ニー１の割合で含まれてい
なければならないが、本発明者等の測定によると類比を
極端に下層るｔｏｏ ： ｏ、を程度しか含まれていな
かった。Also, since aerobic microorganisms are used, the water temperature is 20-3
A temperature of 5° C. is preferable, and low and high temperatures in winter and summer reduce the activity of microorganisms, which may make it difficult to comply with wastewater standards. In addition, in the processing system, COD and B
BOD microbial nutrient source to remove OD:
Generally, the ratio of P should be included at a ratio of 100 to 1, but according to measurements by the present inventors, it was included only to the extent of too: o, which is extremely below the analogy.
（問題点を解決するための手段）
本発明は、水溶性切削・研削廃液を処理するに当たり、
凝集加圧浮上処理の後工程に、該処理液を３〜４倍に希
釈し、並びに栄養源としてＢＯＤ５１に対してリンを１
％以上添加する設備を有した長時間曝気方式の生物処理
を組み込んだことにより上記問題点を解決したものであ
る。尚その後工程については、従来の処理システムと同
様に長時間曝気方式による生物処理液と他工程排液１５
とを混合し、４〜８時間の滞留時間を有する曝気槽と沈
殿槽の組み合せによる標準活性汚泥処理方式の生物処理
でＣＯＤ及びＢＯＤの２次処理を行なう方法により構成
されている。(Means for Solving the Problems) The present invention provides the following features in treating water-soluble cutting/grinding waste liquid:
In the post-process of agglomeration and pressure flotation treatment, the treatment solution is diluted 3 to 4 times, and phosphorus is added to BOD51 as a nutrient source.
The above-mentioned problems were solved by incorporating a long-term aeration system biological treatment equipped with equipment for adding % or more. Regarding subsequent processes, biological treatment liquid and wastewater from other processes are processed using a long-time aeration method, similar to the conventional treatment system.
The secondary treatment of COD and BOD is carried out by biological treatment of the standard activated sludge treatment method using a combination of an aeration tank and a settling tank with a residence time of 4 to 8 hours.
（作 用）
本発明においては、従来の凝集加圧浮上処理の後工程に
長時間曝気方式の生物処理を組み込んだことにより、次
工程の工場内の終末処理工程となる標準活性汚泥方式に
よる生物処理への流入ＣＯＤ及びＢＯＤ負荷が大巾に軽
減する。(Function) In the present invention, by incorporating a long-time aeration method biological treatment into the post-process of the conventional flocculation and pressure flotation treatment, biological treatment using the standard activated sludge method, which is the final treatment step in the factory in the next step, can be achieved. The COD and BOD loads flowing into the process are significantly reduced.
（実施例）
本発明の水溶性切削・研削廃液の処理方法について第１
図に示した。この図に基づき１本発明の詳細な説明する
。(Example) First example of the method for treating water-soluble cutting/grinding waste fluid of the present invention
Shown in the figure. The present invention will be explained in detail based on this figure.
水溶性切削Φ研削廃液ｌは先ず廃液中の油分及びＣＯＤ
の１次処理を行なう為、凝集加圧浮上処理５を行なう、
硫酸バンド等の凝集剤を注入することにより水中のアル
カリ分と化学反応を起こし水酸化アルミニウムやその重
合体を生じ、これが凝集フロックとなるので、アルカリ
度が必要（硫酸バンド（８％）ＬＰＰ！１当り０．２４
ｐｐｍのアルカリ度を消費、）であるため苛性ソーダ３
も同時に注入する。凝集フロック生成後加圧水４により
浮上分離する。凝集加圧浮上した後の処理液のＣＯＤ濃
度は２０００〜３０００ｒａｇ／文と高濃度である為、
工場内の終末処理工程となる標準活性汚泥方式による生
物処理工程では処理困難である。従って凝集加圧浮上処
理液６は約２４時間の滞留時間（エアレーション）を有
した長時間曝気槽７と沈殿槽１１を組み合わせた長時間
曝気方式による生物処理へ導き、活性汚泥中の好気性微
生物の働きにより吸着・酸化及び凝集させてＣＯＤ及び
ＢＯＤを所定濃度まで除去する。ここでは微生物に対す
る濃度的なショックを和らげる為に希釈水８により３〜
４倍に希釈してから処理を行なう、希釈水としては有機
物濃度（ＣＯＤ 、ＢＯＤ）が低くて有ｆ８物賀が混入
してなければ問題がない為、コスト低減の観点より工場
内の最終放流水等を用いるのが好ましい、また凝集加圧
浮上処理液６の中にはＣＯＤ及びＢＯＤを除去する為に
微生物の栄養源として少なくともリン９をＢＯＤ ：
Ｐの比として １００：１以上となるように長時間曝気
槽７の流入部に添加する。ＭＬＳＳ （Ｎ合液中のｒ′
！遊物質、すなわち大略混合液中の活性汚泥量）が５．
０００〜Ｂ、０００謄ｇ／見になるように返送汚泥１２
を、１ｔびにＤＯが１〜３ｍｇ／交になるように空気ｌ
Ｏの量をＷ節する０次の長時間曝気方式による生物処理
液１３を標準活性汚泥処理方式による曝気槽１５へ導き
、従来システムと同様に他工程排水１４と混合して４〜
８時間曝気槽１５中でエアレーションを行ない凝集フロ
ックを生成して沈殿槽１６で沈殿させて上澄水を塩素で
消毒し放流する。沈殿槽１６の沈殿汚泥は返送汚泥１７
として再び曝気槽１５に戻す。The water-soluble cutting Φ grinding waste liquid l is first of all oil and COD in the waste liquid.
In order to perform the primary treatment, agglomeration pressure flotation treatment 5 is performed.
By injecting a flocculant such as sulfuric acid, a chemical reaction occurs with the alkaline content in the water, producing aluminum hydroxide and its polymers, which become coagulated flocs, so alkalinity is required (sulfuric acid (8%) LPP! 0.24 per 1
Consumes ppm alkalinity, since caustic soda 3
are also injected at the same time. After the agglomerated flocs are formed, they are floated and separated using pressurized water 4. Since the COD concentration of the treatment liquid after coagulation and pressure flotation is as high as 2000 to 3000 rag/liter,
It is difficult to treat with the biological treatment process using the standard activated sludge method, which is the final treatment process in the factory. Therefore, the flocculation and pressure flotation treatment liquid 6 is guided to biological treatment by a long-time aeration system that combines a long-time aeration tank 7 with a residence time (aeration) of about 24 hours and a sedimentation tank 11, and aerobic microorganisms in the activated sludge are COD and BOD are removed to a predetermined concentration by adsorption, oxidation, and coagulation. Here, in order to soften the concentration shock to microorganisms, dilution water was added to
The dilution water is diluted 4 times before treatment.As long as the concentration of organic matter (COD, BOD) is low and F8 monoga is not mixed in, there is no problem with the dilution water, so from the perspective of cost reduction, the final discharge within the factory is It is preferable to use water or the like, and the coagulation and pressure flotation treatment liquid 6 contains at least phosphorus 9 as a nutrient source for microorganisms in order to remove COD and BOD:
It is added to the inlet of the long-term aeration tank 7 so that the P ratio is 100:1 or more. MLSS (r' in the N mixture
! The amount of activated sludge in the mixed liquid is 5.
000~B, 000 g/Return sludge 12 as shown
, air is added so that DO is 1 to 3 mg/cross for every 1 ton.
A biological treatment liquid 13 using a zero-order long-time aeration method that reduces the amount of O by W is led to an aeration tank 15 using a standard activated sludge treatment method, and mixed with wastewater 14 from other processes as in the conventional system.
Aeration is carried out in an aeration tank 15 for 8 hours to produce coagulated flocs, which are precipitated in a settling tank 16, and the supernatant water is disinfected with chlorine and discharged. The settled sludge in the settling tank 16 is returned to the sludge 17
The water is returned to the aeration tank 15 as a result.
（効果）
本発明の水溶性切削・研削廃液の処理方法によると従来
の凝集加圧浮上処理の後工程に長時間曝気方式の生物処
理を組み込んだことにより、ＣＯＤ及びＢＯＤの除去性
能が向とする。(Effects) According to the water-soluble cutting/grinding waste treatment method of the present invention, the removal performance of COD and BOD is improved by incorporating a long-time aeration type biological treatment into the post-process of the conventional coagulation pressure flotation treatment. do.
その為次工程の工場内の終末処理工程となる標準活性汚
泥方式による生物処理への流入ＣＯＤ及びＢＯＤ負荷は
以下の表に示すように従来の処理システムと比較して終
末処理工程の流入負荷においてＢＯＤで８５〜８３％、
ＣＯＤで４４〜Ｂ６％の軽減が図られる。Therefore, as shown in the table below, the inflow COD and BOD loads to the biological treatment using the standard activated sludge method, which is the final treatment process in the factory in the next process, are lower than the inflow load of the final treatment process compared to the conventional treatment system. 85-83% in BOD,
COD will be reduced by 44-6%.
表
また長時間曝気方式による生物処理工程でのリン注入の
有無のＣＯＤ除去比較を第２図に示した。この推移グラ
フに示す通り、リンを添加することにより１年間平均し
たＣＯＤ除去率が得られ、特に水温の低下する１２〜２
月の冬期においては、リン添加無しの場合、０〜２８％
の除去率しか得られなかったものが、リン注入により８
２〜６６％と大巾にＣＯＤ除去率が向上した。Table 2 also shows a comparison of COD removal with and without phosphorus injection in the biological treatment process using a long-time aeration method. As shown in this transition graph, by adding phosphorus, the average COD removal rate for one year can be obtained, especially when the water temperature decreases.
In the winter season of March, 0 to 28% without phosphorus addition.
The removal rate was only 8%, but with phosphorus injection, the removal rate was increased to 8%.
The COD removal rate was greatly improved from 2 to 66%.
なお、７〜１２月のデータにおいては、ｔｉｚな差が現
われていないが、その要因としてはリン添加有りのデー
タは無しのデータに較べて、ＣＯＤ流入負荷量が２０％
程度増加しているためである。In addition, in the data from July to December, there is no significant difference, but the reason for this is that the COD inflow load is 20% higher in the data with phosphorus addition than in the data without.
This is because the degree is increasing.
第１図は１本発明の水溶性切削・研削廃液の処理方法の
説明図、
第２図は、長時間曝気方式による生物処理工程でのリン
添加の有無によるＣＯＤ除去率の比較を表わすグラフ、
第３図は、従来の水溶性切削・研削廃液の処理システム
の説明図である。
図中、
１．１８・・・水溶性切削中研削廃液
２・・・硫酸バンド ３・・・苛性ソータ４・・
・加圧水
５．１８・・・凝集加圧浮上処理
６．２０・・・凝集加圧浮上処理液
７・・・長時°間曝気槽 ８・・・希釈水９・・・
リン ｌＯ・・・空気１１・・・沈殿槽
１２・・・返送汚泥１３・・・長時間曝気方
式による生物処理水１４．２１・・・他工程廃液 １
５ 、２２・・・曝気槽１［（，２３・・・沈殿槽
１７．２４・・・返送汚泥特許出願人 トヨタ自動
車株式会社
（ほか２名）
才１図Figure 1 is an explanatory diagram of the water-soluble cutting/grinding waste treatment method of the present invention; Figure 2 is a graph showing a comparison of COD removal rates with and without phosphorus addition in a biological treatment process using a long-time aeration method; FIG. 3 is an explanatory diagram of a conventional water-soluble cutting/grinding waste liquid treatment system. In the figure, 1.18...Water-soluble cutting waste liquid 2...Sulfuric acid band 3...Caustic sorter 4...
- Pressurized water 5.18... Coagulation pressure flotation treatment 6.20... Coagulation pressure flotation treatment liquid 7... Long time aeration tank 8... Dilution water 9...
Phosphorus lO... Air 11... Sedimentation tank
12... Returned sludge 13... Biologically treated water by long-time aeration method 14.21... Waste liquid from other processes 1
5, 22... Aeration tank 1 [(, 23... Sedimentation tank
17.24... Returned sludge patent applicant Toyota Motor Corporation (and 2 others) Year 1 figure
Claims (1)
上処理の後工程に、凝集加圧浮上処理液を３〜４倍に希
釈し、栄養源としてＢＯＤ量に対してリンを１％以上添
加する長時間曝気方式の生物処理を組み込んだことを特
徴とする水溶性切削・研削廃液の処理方法。When treating water-soluble cutting/grinding waste liquid, in the post-process of coagulation pressure flotation treatment, the coagulation pressure flotation treatment liquid is diluted 3 to 4 times, and 1% or more of phosphorus is added to the BOD amount as a nutrient source. A method for treating water-soluble cutting and grinding waste fluid, which is characterized by incorporating biological treatment using a long-time aeration method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62013824A JPS63182100A (en) | 1987-01-23 | 1987-01-23 | Treatment of water-soluble cutting/grinding waste liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62013824A JPS63182100A (en) | 1987-01-23 | 1987-01-23 | Treatment of water-soluble cutting/grinding waste liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63182100A true JPS63182100A (en) | 1988-07-27 |
Family
ID=11844021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62013824A Pending JPS63182100A (en) | 1987-01-23 | 1987-01-23 | Treatment of water-soluble cutting/grinding waste liquid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63182100A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002273462A (en) * | 2001-03-22 | 2002-09-24 | Asahi Kasei Corp | Method and device for treating waste water |
| JP2006289313A (en) * | 2005-04-14 | 2006-10-26 | Matsushita Electric Ind Co Ltd | Apparatus and method for treating organic waste water |
| JP2007160233A (en) * | 2005-12-14 | 2007-06-28 | Kurita Water Ind Ltd | Organic matter-containing wastewater treatment apparatus and method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53103660A (en) * | 1977-02-16 | 1978-09-09 | Pielkenrood Vinitex Bv | Method of and device for treating liquid |
-
1987
- 1987-01-23 JP JP62013824A patent/JPS63182100A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53103660A (en) * | 1977-02-16 | 1978-09-09 | Pielkenrood Vinitex Bv | Method of and device for treating liquid |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002273462A (en) * | 2001-03-22 | 2002-09-24 | Asahi Kasei Corp | Method and device for treating waste water |
| JP2006289313A (en) * | 2005-04-14 | 2006-10-26 | Matsushita Electric Ind Co Ltd | Apparatus and method for treating organic waste water |
| JP2007160233A (en) * | 2005-12-14 | 2007-06-28 | Kurita Water Ind Ltd | Organic matter-containing wastewater treatment apparatus and method |
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