JP3219468B2 - Method of treating kitchen waste and kitchen wastewater - Google Patents
Method of treating kitchen waste and kitchen wastewaterInfo
- Publication number
- JP3219468B2 JP3219468B2 JP18194092A JP18194092A JP3219468B2 JP 3219468 B2 JP3219468 B2 JP 3219468B2 JP 18194092 A JP18194092 A JP 18194092A JP 18194092 A JP18194092 A JP 18194092A JP 3219468 B2 JP3219468 B2 JP 3219468B2
- Authority
- JP
- Japan
- Prior art keywords
- kitchen
- anaerobic
- tank
- wastewater
- 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.)
- Expired - Fee Related
Links
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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Landscapes
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Treatment Of Sludge (AREA)
- Processing Of Solid Wastes (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は家庭の台所などより排出
される厨芥および厨房排水の処理方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for treating kitchen waste and kitchen waste water discharged from a home kitchen or the like.
【０００２】[0002]
【従来の技術】従来、厨芥の処理装置としてディスポー
ザーがあるが、これだけでは粉砕厨芥を水道水とともに
排出するために公共水域放流の場合の公害の問題や、下
水道放流の場合の下水管内堆積、あるいは終末処理場の
処理能力の不足などの問題のために普及せずに現在に至
っている。すなわち、ディスポーザーが普及するために
は、粉砕厨芥に何らかの処理を施して、固形物汚濁や、
有機物汚濁を減少させたうえで下水道に排出する必要が
ある。これを解決する方法として厨芥をディスポーザー
で粉砕した後、固液分離し、液体は生物処理により浄化
し、固形分はメタン発酵させてエネルギーを回収する技
術が開発されている。2. Description of the Related Art Conventionally, there is a disposer as a kitchen garbage disposal apparatus. However, this alone causes pollution problems in the case of discharging water from a public water area to discharge crushed kitchen garbage together with tap water, sedimentation in a sewer pipe in the case of discharging sewage, or It has not been widely used due to problems such as lack of processing capacity of terminal treatment plants, and has continued to this day. In other words, in order for disposers to spread, some treatment is performed on crushed garbage, and
It is necessary to discharge organic matter to the sewer after reducing pollution. As a method for solving this problem, a technology has been developed in which garbage is pulverized with a disposer, separated into solid and liquid, the liquid is purified by biological treatment, and the solid is subjected to methane fermentation to recover energy.
【０００３】一方、琵琶湖などの公共水域放流地域の一
般家庭においては屎尿を浄化する単独処理浄化槽および
屎尿と生活雑排水を合わせた生活排水を浄化する合併処
理浄化槽が設置されている。On the other hand, general households in public water discharge areas such as Lake Biwa are provided with a single treatment septic tank for purifying human waste and a combined treatment septic tank for purifying domestic wastewater including human waste and domestic wastewater.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら前者の技
術においては固液分離装置を新たに設ける必要があるの
と、メタン発酵によるエネルギー回収は大規模処理施設
でないと効率が悪くなるため、一戸建の家庭には応用で
きず、固形分は結局回収しなければならないという問題
点が残る。また公共水域放流地域の一般家庭においては
大部分が単独処理浄化槽が設置されており、生活雑排水
は垂れ流しになっているため、これが公共水域の富栄養
化の主な原因となっている。そこで、現在設置されてい
る単独処理浄化槽を合併処理浄化槽に代えてしまうとい
う考え方があるが、多額の費用がかかるため、短時間で
の実現は困難であると考えられる。However, in the former technique, it is necessary to newly provide a solid-liquid separation device, and the efficiency of energy recovery by methane fermentation becomes poor unless it is a large-scale treatment facility. The problem remains that it cannot be applied to homes and solids must be recovered after all. In addition, most of the general households in the public water discharge area are equipped with a single treatment septic tank, and household wastewater is drained, which is the main cause of eutrophication in public waters. Therefore, there is an idea to replace the currently installed single treatment septic tank with a merged treatment septic tank. However, it is considered that it is difficult to realize the treatment in a short time because of the large cost.
【０００５】本発明は上記二つの課題を解決するもの
で、粉砕厨芥を固液分離することなく無回収で処理し、
さらに生活雑排水の中で最も汚濁負荷が大きい厨房排水
を併せて処理することを目的としている。The present invention solves the above two problems, and treats crushed garbage without collection without solid-liquid separation.
It also aims to treat kitchen wastewater, which has the greatest pollution load among household wastewater, together.
【０００６】[0006]
【課題を解決するための手段】本発明は上記課題を解決
するために、厨芥粉砕物の移送に生物学的排水処理水お
よび生物学的排水処理水により発生する余剰汚泥を利用
し、嫌気処理槽にて厨芥粉砕物を可溶可分解した分解水
と厨房排水を混合させて浄化しようとするものである。
さらに夜間時には嫌気性第１処理槽から嫌気性第２処理
槽へ嫌気性第１処理槽の処理水を定量供給する。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention utilizes biological wastewater and excess sludge generated by biological wastewater to transport crushed garbage. It is intended to purify it by mixing kitchen wastewater with decomposed water obtained by dissolving and decomposing crushed kitchen waste in a tank.
Further, at night, the anaerobic first treatment tank supplies the treated water in the anaerobic first treatment tank to the anaerobic second treatment tank at a constant rate.
【０００７】[0007]
【作用】上記構成により、厨芥粉砕物の移送に生物学的
排水処理水および余剰汚泥を利用するためにディスポー
ザーによる厨芥粉砕時の水道水が不要となり、また固形
分および厨房排水処理槽の余剰汚泥引き抜きが不要とな
るとともに処理能力が向上する。また夜間時の嫌気性第
１処理槽から嫌気性第２処理槽への定量供給により、嫌
気性第２処理槽や好気性処理槽でのＢＯＤ負荷変動を小
さくできて好気性処理槽で安定した有機物の除去が可能
となる。According to the above-mentioned structure, tap water is not required when disintegrating kitchen waste by a disposer because the biological wastewater and excess sludge are used for transferring the kitchen waste, and the solid content and excess sludge in the kitchen wastewater treatment tank are used. Extraction is not required, and the processing capacity is improved. In addition, the BOD load fluctuation in the anaerobic second processing tank and the aerobic processing tank can be reduced by the quantitative supply from the anaerobic first processing tank to the anaerobic second processing tank at night, and the aerobic processing tank is stabilized. Organic substances can be removed.
【０００８】[0008]
【実施例】以下、本発明の一実施例について図１および
図２を参照しながら説明する。１は厨芥投入口、２は投
入された厨芥を粉砕するための厨芥粉砕機（ディスポー
ザ）、３は粉砕された厨芥物を一時貯溜するための貯溜
槽、４は厨芥固形物を液状化するための嫌気性第１処理
槽で、この嫌気性第１処理槽４には嫌気性菌を定着させ
るための嫌気濾床５が設けられている。７は流し台６よ
り排出される厨房排水と嫌気性第１処理槽４から排出さ
れる厨芥液状水を処理するための嫌気性第２処理槽で、
嫌気濾床８を有する。９は厨房排水用処理槽で、この厨
房排水用処理槽９には、前記嫌気性第２処理槽７と、第
１、第２の接触曝気槽１０Ａ，１０Ｂと、この接触曝気
槽１０Ａ，１０Ｂで処理された水に含まれる汚泥を沈澱
させるための沈澱槽１１と、沈澱槽１１からくる上澄み
水を消毒する消毒槽１２とが順に設けられている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. 1 is a garbage input port, 2 is a garbage crusher (disposer) for crushing inputted garbage, 3 is a storage tank for temporarily storing crushed garbage, and 4 is for liquefying garbage solids. The first anaerobic treatment tank 4 is provided with an anaerobic filter bed 5 for fixing anaerobic bacteria. Reference numeral 7 denotes an anaerobic second treatment tank for treating kitchen wastewater discharged from the sink 6 and kitchen garbage liquid water discharged from the anaerobic first treatment tank 4,
It has an anaerobic filter bed 8. Reference numeral 9 denotes a kitchen drainage treatment tank. The kitchen drainage treatment tank 9 includes the anaerobic second treatment tank 7, the first and second contact aeration tanks 10A and 10B, and the contact aeration tanks 10A and 10B. And a disinfecting tank 12 for disinfecting the supernatant water coming from the sedimentation tank 11 are provided in order.
【０００９】ここで、１３は散気管１４にエアを送るた
めのエアポンプ、１５は第２接触曝気槽１０Ｂの沈澱汚
泥を厨芥粉砕機２に送るためのポンプである。また、１
６は嫌気性第１処理槽４の処理水を嫌気性第２処理槽７
へ定量供給するための定量ポンプで、夜間時に稼働され
る。Here, 13 is an air pump for sending air to the air diffuser 14, and 15 is a pump for sending the settled sludge in the second contact aeration tank 10B to the garbage crusher 2. Also, 1
Reference numeral 6 denotes an anaerobic second treatment tank 7 for treating water in the anaerobic first treatment tank 4.
This is a metering pump for feeding a fixed amount to the pump at night.
【００１０】このシステムにおける厨芥および厨房排水
の処理フローを図２に示す。これらのシステムにより投
入された厨芥は厨芥粉砕機２により細かく砕かれ、ポン
プ１５より送り出された沈澱汚泥水と共に貯溜槽３まで
流される。貯溜槽３に一定時間置くことでＤＯ（溶存酸
素）を低下させた後、嫌気性第１処理槽４に投入し、嫌
気性第１処理槽４内のＤＯを常に０付近に保ち、好気性
汚泥および厨芥固形物の液状化を促進させる。嫌気性第
１処理槽４からオーバーフローした処理水と流し台６か
ら排出される厨房排水は厨房排水用処理槽９でＢＯＤ除
去し、放流される。さらに厨芥および厨房排水の発生が
ない夜間時に嫌気性第１処理槽４の処理水を嫌気性第２
処理槽７へ送ることで、嫌気性第２処理槽２と好気性処
理槽（接触曝気槽）へのＢＯＤ負荷変動を小さくする。FIG. 2 shows a processing flow of kitchen waste and kitchen wastewater in this system. The garbage introduced by these systems is finely crushed by the garbage crusher 2 and flows to the storage tank 3 together with the settled sludge water sent from the pump 15. After reducing DO (dissolved oxygen) by placing in the storage tank 3 for a certain period of time, the DO is dropped into the anaerobic first processing tank 4 and the DO in the anaerobic first processing tank 4 is always kept close to 0, and aerobic. Promote liquefaction of sludge and kitchen solids. The treated water overflowing from the anaerobic first treatment tank 4 and kitchen wastewater discharged from the sink 6 are BOD-removed in the kitchen wastewater treatment tank 9 and discharged. Further, the anaerobic first treatment tank 4 is treated with anaerobic second wastewater during the night when kitchen waste and kitchen wastewater do not occur.
By sending it to the processing tank 7, fluctuations in BOD load on the anaerobic second processing tank 2 and the aerobic processing tank (contact aeration tank) are reduced.
【００１１】次に今回実施した実験条件および評価方法
について説明する。 実験条件 有効槽容積 貯溜槽 １０Ｌ 嫌気性処理槽 １００Ｌ 厨房排水曜処理槽 ３００Ｌ 嫌気濾床槽 ９０Ｌ 接触曝気槽 １７０Ｌ 沈澱槽 ３０Ｌ 消毒槽 １０Ｌ 貯溜槽滞留時間 ３０分 夜間定量供給時間および量 ＡＭ１：００〜
５：００、２Ｌ／ｈｒ 対象家族 …Ａ：５人家族（大人３名、子供２
名） Ｂ：６人家族（大人４名、子供２名） 評価方法 放流水の水質評価はすべてＢＯＤ（生物化学的酸素要求
量）で行い、まず２カ月間使用してもらい、定常状態に
達した後に１周毎に１０週間、嫌気性第２処理槽７およ
び放流水についてＢＯＤを測定した。なおＢＯＤはセン
トラル科学製のＢＯＤ迅速測定器を使用し、１日５回一
定時間毎に採水し、そのＢＯＤ測定値の平均値とした。
以下にその結果を表１、２に示す。Next, the experimental conditions and the evaluation method performed this time will be described. Experimental conditions Effective tank capacity Storage tank 10L Anaerobic treatment tank 100L Kitchen drainage day treatment tank 300L Anaerobic filter bed tank 90L Contact aeration tank 170L Precipitation tank 30L Disinfection tank 10L Storage tank residence time 30 minutes Night quantitative supply time and amount AM1: 00
5:00, 2L / hr Target family… A: Family of 5 (3 adults, 2 children)
Name) B: Family of 6 (4 adults, 2 children) Evaluation method The quality of the effluent is evaluated by BOD (Biochemical Oxygen Demand). After that, the BOD of the anaerobic second treatment tank 7 and the effluent was measured every week for 10 weeks. In addition, BOD was used five times a day at regular time intervals using a BOD rapid measuring device manufactured by Central Science, and the average value of the measured BOD values was used.
The results are shown in Tables 1 and 2 below.
【００１２】[0012]
【表１】 [Table 1]
【００１３】[0013]
【表２】 [Table 2]
【００１４】このように本発明の一実施例によれば、通
常厨房排水はＢＯＤ濃度600 ｍｇ／１で排出されるとこ
ろが、40ｍｇ／１以下に抑えることができ、厨芥処理も
可能となる。As described above, according to the embodiment of the present invention, although the kitchen wastewater is normally discharged at a BOD concentration of 600 mg / 1, it can be suppressed to 40 mg / 1 or less, and the kitchen waste can be treated.
【００１５】[0015]
【発明の効果】以上の説明から明らかなように本発明に
よれば、厨芥粉砕物の移送に生物学的排水処理水および
余剰汚泥を利用することにより、ディスポーザーによる
厨芥粉砕時の水道水が不要となり、さらに、厨芥粉砕物
を嫌気処理により可溶化分解した分解水と厨房排水を混
合した後に浄化することにより、固形分および厨房排水
処理槽の余剰汚泥引き抜きが不要となるとともに処理能
力が向上して、単独処理浄化槽が設置されている地域の
厨房排水処理対策に最適となり、しかも厨芥搬出が不要
となって便利になる。また、夜間時の嫌気性第１処理槽
から嫌気性第２処理槽への処理水の定量供給により、嫌
気性第２処理槽やこの下流側に設けられた好気性処理槽
でのＢＯＤ負荷変動を小さくできて、好気性処理槽で安
定した有機物の除去が可能となる。As is apparent from the above description, according to the present invention, the biological wastewater treatment water and the excess sludge are used for transporting the crushed garbage, thereby eliminating the need for tap water when the garbage is crushed by the disposer. In addition, by mixing kitchen wastewater with the decomposition water obtained by solubilizing and decomposing the garbage crushed waste by anaerobic treatment, the solid content and excess sludge in the kitchen wastewater treatment tank are not required, and the processing capacity is improved. Therefore, it is most suitable for kitchen wastewater treatment measures in an area where a single treatment septic tank is installed, and it is not necessary to carry out kitchen waste, which is convenient. In addition, the BOD load fluctuation in the anaerobic second processing tank and the aerobic processing tank provided downstream of the anaerobic second processing tank and the anaerobic second processing tank by quantitative supply of the processing water from the first anaerobic processing tank to the second anaerobic processing tank at night. Can be reduced, and stable organic substances can be removed in the aerobic treatment tank.
【図１】本発明の一実施例に係る厨芥および厨房排水の
処理システムの断面図FIG. 1 is a cross-sectional view of a kitchen waste and kitchen wastewater treatment system according to an embodiment of the present invention.
【図２】同システムによる厨芥および厨房排水の処理フ
ロー図Fig. 2 Processing flow diagram of kitchen waste and kitchen wastewater by the same system
２ 厨芥粉砕機 ３ 貯溜槽 ４ 嫌気性第１処理槽 ７ 嫌気性第２処理槽 １０Ａ，１０Ｂ 接触曝気層 １１ 沈殿層 １２ 消毒槽 １６ 定量ポンプ 2 Kitchen crusher 3 Storage tank 4 Anaerobic first processing tank 7 Anaerobic second processing tank 10A, 10B Contact aeration layer 11 Sedimentation layer 12 Disinfection tank 16 Metering pump
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平２−78490（ＪＰ，Ａ) 特開 平５−337496（ＪＰ，Ａ) 実開 昭63−45894（ＪＰ，Ｕ) 実開 昭61−143695（ＪＰ，Ｕ) 特表 平３−503257（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B09B 3/00 C02F 3/28 C02F 9/00 - 9/00 504 C02F 1/00 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-78490 (JP, A) JP-A-5-337496 (JP, A) JP-A 63-45894 (JP, U) JP-A 61- 143695 (JP, U) Table 3-3-1 (JP, A) (58) Fields surveyed (Int. Cl. 7 , DB name) B09B 3/00 C02F 3/28 C02F 9/00-9/00 504 C02F 1/00
Claims (1)
および生物学的排水処理水により発生する余剰汚泥を利
用し、厨芥粉砕物と混合させた後に、嫌気性第１処理槽
に投入し、夜間時に、厨芥固形物を液状化する嫌気性第
１処理槽からの処理水を、厨房排水と前記処理水を処理
する嫌気性第２処理槽へ定量供給し、厨芥粉砕物を嫌気
処理により可溶化分解した分解水と厨房排水を嫌気性第
２処理槽で混合した後に浄化する厨芥および厨房排水の
処理方法。1. A utilized in the transport of garbage pulverized surplus sludge generated by the biological waste water treatment water and biological wastewater treatment water, after mixed with garbage pulverized product, the anaerobic first treatment tank Anaerobic liquefaction that liquefies solid waste at night
1 Treated water from treatment tank, kitchen drainage and treated water
Anaerobic second treatment tank, which supplies a fixed amount of garbage to anaerobic
Anaerobic wastewater and kitchen wastewater
A method for treating kitchen waste and kitchen wastewater to be purified after mixing in two treatment tanks .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18194092A JP3219468B2 (en) | 1992-07-09 | 1992-07-09 | Method of treating kitchen waste and kitchen wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18194092A JP3219468B2 (en) | 1992-07-09 | 1992-07-09 | Method of treating kitchen waste and kitchen wastewater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0623337A JPH0623337A (en) | 1994-02-01 |
| JP3219468B2 true JP3219468B2 (en) | 2001-10-15 |
Family
ID=16109557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18194092A Expired - Fee Related JP3219468B2 (en) | 1992-07-09 | 1992-07-09 | Method of treating kitchen waste and kitchen wastewater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3219468B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3450219B2 (en) | 1999-04-16 | 2003-09-22 | 埼玉日本電気株式会社 | Portable mobile radio telephone equipment |
| JP4604600B2 (en) * | 2003-09-29 | 2011-01-05 | 富士電機ホールディングス株式会社 | Methane fermentation treatment method and apparatus |
| JP2006272103A (en) * | 2005-03-29 | 2006-10-12 | Kubota Corp | Method and apparatus for pretreating garbage |
| JP4611120B2 (en) * | 2005-06-01 | 2011-01-12 | ヤンマー株式会社 | Wastewater recycling system |
| JP2007326016A (en) * | 2006-06-07 | 2007-12-20 | Yusei Kenkyu Kikinkai | Biological waste water treatment method |
-
1992
- 1992-07-09 JP JP18194092A patent/JP3219468B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0623337A (en) | 1994-02-01 |
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