JPS61114799A - Treatment of excretion - Google Patents
Treatment of excretionInfo
- Publication number
- JPS61114799A JPS61114799A JP59236684A JP23668484A JPS61114799A JP S61114799 A JPS61114799 A JP S61114799A JP 59236684 A JP59236684 A JP 59236684A JP 23668484 A JP23668484 A JP 23668484A JP S61114799 A JPS61114799 A JP S61114799A
- Authority
- JP
- Japan
- Prior art keywords
- biological treatment
- human waste
- activated sludge
- screen
- treatment process
- 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
- 230000029142 excretion Effects 0.000 title abstract 7
- 239000010802 sludge Substances 0.000 claims abstract description 39
- 238000000034 method Methods 0.000 claims abstract description 29
- 239000002002 slurry Substances 0.000 claims abstract description 10
- 239000000706 filtrate Substances 0.000 claims abstract description 8
- 239000010800 human waste Substances 0.000 claims description 33
- 238000005273 aeration Methods 0.000 claims description 2
- 238000003672 processing method Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 abstract description 5
- 229920006317 cationic polymer Polymers 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 210000002700 urine Anatomy 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 230000018044 dehydration Effects 0.000 description 4
- 238000006297 dehydration reaction Methods 0.000 description 4
- 238000010790 dilution Methods 0.000 description 4
- 239000012895 dilution Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000003337 fertilizer Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- -1 but FeCl s Substances 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000009264 composting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 235000013601 eggs Nutrition 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000011086 high cleaning Methods 0.000 description 1
- 244000045947 parasite Species 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 238000005406 washing Methods 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
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、生し尿（し尿浄化槽汚泥を含む）などに含ま
れるし渣と、除渣し尿を生物処理する際に発生した余剰
活性汚泥の両者を効果的に脱水し、低含水率の脱水ケー
キを得る方法に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention is directed to the treatment of human waste contained in human waste (including human waste septic tank sludge) and surplus activated sludge generated during biological treatment of the removed human waste. The present invention relates to a method for effectively dehydrating both to obtain a dehydrated cake with a low moisture content.
し尿の生物処理工程および生物処理水の凝集分離工程か
ら発生する余剰汚泥は、極めて難脱水性の汚泥として周
知のところである。Excess sludge generated from the biological treatment process of human waste and the coagulation separation process of biologically treated water is well known as a sludge that is extremely difficult to dewater.
従来、この余剰汚泥を脱水するのに各種の脱水方法が実
施されているが、ＦｅＣｌ ｓ 、 Ｃａ（Ｏｆｌ）
ｚなどの無機薬品を多量に使用するフィルタプレス脱水
法以外に、含水率６０％台の脱水ケーキを得ることは困
難であった。Conventionally, various dewatering methods have been used to dewater this surplus sludge, but FeCl s, Ca(Ofl)
It has been difficult to obtain a dehydrated cake with a water content of 60% using methods other than the filter press dehydration method that uses a large amount of inorganic chemicals such as Z.
また、生物処理工程で処理する前に、生し尿中の繊維分
等の夾雑物をスクリーンで除去しており、除去された夾
雑物はし渣とよばれ、前記余剰汚泥とは別個の脱水機に
よって脱水されたのち処分されていた。In addition, before processing in the biological treatment process, impurities such as fibers in human urine are removed using a screen, and the removed impurities are called sludge, which is separated from the surplus sludge by a dewatering machine. It was dehydrated and then disposed of.
前記余剰汚泥のフィルタプレス脱水法では、無機薬品を
多量に使用するため、脱水ケーキ量が多くなり、焼却す
る場合には焼却灰の発生量も多くなるなどの問題点があ
った。In the filter press dewatering method for excess sludge, since a large amount of inorganic chemicals are used, the amount of dewatered cake increases, and when incinerated, the amount of incinerated ash is also increased.
また、し渣には生し尿中の汚物が多く含まれており、取
り扱う際極めて非衛生的であり、臭気の面でも問題があ
った。Furthermore, human waste contains a lot of filth from raw human urine, making it extremely unhygienic to handle and causing problems in terms of odor.
本発明は、無機薬品を使用することなく、余剰汚泥をし
渣と共に効果的に脱水し、低含水率のしかも非衛生的で
ない脱水ケーキを得、し渣専用の脱水機を不要にし、作
業環境をも良好にしようとするものである。The present invention effectively dehydrates excess sludge together with residue without using inorganic chemicals, yields a dehydrated cake with a low water content and is not unhygienic, eliminates the need for a dewatering machine exclusively for residue, and improves the working environment. It also aims to improve the quality of life.
Ｃ問題点を解決するための手段〕
本発明は、生し尿を微細目スクリーンに流入させてし渣
を除去したのち生物処理する方法において、前記し渣に
前記生物処理工程の活性汚泥スラリを混合したのち、さ
らに微細目スクリーンに流入させ、得られたスクリーン
ろ液を前記生物処理工程に返送する一方、分離されたし
渣を前記生物処理工程で発生した余剰活性汚泥に混合し
て機械脱水することを特徴とするし尿処理方法である。Means for Solving Problem C] The present invention provides a method for biologically treating raw human waste after flowing it into a fine mesh screen to remove the human waste, in which activated sludge slurry from the biological treatment step is mixed with the human waste. After that, it is further allowed to flow through a fine screen, and the resulting screen filtrate is returned to the biological treatment process, while the separated residue is mixed with the excess activated sludge generated in the biological treatment process and mechanically dehydrated. This is a human waste disposal method characterized by the following.
バキュームカーなどでし尿処理場に搬入された生し尿１
は、図示しない粗目スクリーンでビニール片などの粗大
異物が除去されたのち、第１微細目スクリーン２に導か
れ、トイレットペーパーなどの紙を主体とするし渣３が
回収される。この第１微細目スクリーン２の目開きは、
２ｆｉ以下、好ましくは０．７〜１ｆｌ程度とし、ロー
タリースクリーンを利用するのが便利である。例えば、
目開き０．７ｆｌのロータリースクリーンで、し渣３の
回収量は生し尿１に１当たり４〜５ ｋｇ ｄｒｙ ５
ｏｌｉｄに達する。し渣３が回収された除渣し尿４は、
例えば公知の無希釈タイプの生物学的硝化脱窒素プロセ
スを採用した生物処理工程５に導かれて生物処理される
。Human waste transported to the human waste treatment plant by vacuum car etc. 1
After coarse foreign substances such as vinyl pieces are removed by a coarse screen (not shown), the residue is guided to a first fine screen 2, where residue 3 mainly made of paper such as toilet paper is collected. The opening of this first fine mesh screen 2 is as follows:
It is convenient to set the volume to 2 fi or less, preferably about 0.7 to 1 fl, and to use a rotary screen. for example,
With a rotary screen with an opening of 0.7 fl, the amount of human waste 3 recovered is 4 to 5 kg per 1 part of raw human urine dry 5
Reach olid. The human waste 4 from which the human waste 3 has been collected is
For example, it is guided to a biological treatment step 5 that employs a known non-dilution type biological nitrification and denitrification process.
回収されたし渣３は、生し尿中の汚物が多量に含まれ、
悪臭が強く、寄生虫卵も含まれており、極めて非衛生的
な状態となっている。したがって、水道水などの清水で
し渣３を洗浄することが考えられるが、洗浄排水が多量
に発生し、これを生物処理するために生物処理工程５に
流入する汚水量が増加し、し尿の無希釈処理が不可能と
なる。したがって、その打開策を追究した結果、生物処
理工程５内の活性汚泥スラリ６を一部ポンブ７にて引き
抜き、混合槽８にてし渣３に混合することによって、し
渣３中の汚物が効果的に活性汚泥に吸着し、洗浄効果が
高くなることを見出した。混合槽８における混合は、特
に制限されるものではないが、ブロワ９を利用したエア
レーションによるものが好ましい。この結果、水道水な
どの清水を使用することなく、し渣３から７η物を効果
的に除去することができ、しかもし尿の無希釈処理も容
易に可能となる。The collected human waste 3 contains a large amount of filth from raw human urine,
It has a strong odor and contains parasite eggs, making it extremely unhygienic. Therefore, it is conceivable to wash the night soil 3 with clean water such as tap water, but a large amount of washing waste water is generated, and the amount of waste water flowing into the biological treatment process 5 increases in order to biologically treat it. Non-dilution processing becomes impossible. Therefore, as a result of pursuing a solution to this problem, a part of the activated sludge slurry 6 in the biological treatment process 5 is drawn out with the pump 7 and mixed with the sludge 3 in the mixing tank 8, thereby eliminating the filth in the sludge 3. It has been found that it effectively adsorbs to activated sludge, increasing the cleaning effect. Mixing in the mixing tank 8 is not particularly limited, but aeration using a blower 9 is preferable. As a result, the 7η substances can be effectively removed from the human waste 3 without using clean water such as tap water, and it is also possible to easily treat human urine without dilution.
しかして、混合槽８から流出したし渣３と活性汚泥スラ
リ６の混合物１０は、ポンプ１１によって第２微細目ス
クリーン１２（第１微細目スクリーンと同一機種を使用
）に送られ、洗浄後の洗浄し渣１３と汚物を吸着した活
性汚泥スラリからなるスクリーンろ液１４に分離される
。このスクリーンろ液１４は、再び生物処理工程５にリ
サイクルされ、し渣３から除去された汚物は生物処理工
程で生物学的に浄化される。The mixture 10 of the sludge 3 and the activated sludge slurry 6 that has flowed out from the mixing tank 8 is sent to the second fine screen 12 (using the same model as the first fine screen) by the pump 11, and after cleaning, It is separated into a screen filtrate 14 consisting of washed residue 13 and activated sludge slurry that has adsorbed filth. This screen filtrate 14 is recycled again to the biological treatment step 5, and the filth removed from the scum 3 is biologically purified in the biological treatment step.
次に、生物処理工程５から流出するスラリは遠心分離機
１５などで汚泥１６が分離され、生物処理水１７となる
が、分離された汚泥１６は大部分生物処理工程５へ返送
され、その余剰分は余剰活性汚泥１８として排出される
。この余剰活性汚泥１８ （生物処理水１７をさらに凝
集分離する場合には、その凝集汚泥と余剰活性汚泥１８
の混合汚泥）に、洗浄し渣１３を添加し、さらにカチオ
ンポリマーを添加してフロック形成したのち、スクリュ
ープレス脱水機１９にて脱水すると、洗浄し渣１３が脱
水助剤として作用し、含水率５５〜６３％程度の低含水
率の脱水ケーキ２０が得られる。Next, the slurry flowing out from the biological treatment process 5 is separated into sludge 16 using a centrifuge 15 or the like to become biologically treated water 17, but most of the separated sludge 16 is returned to the biological treatment process 5, and the surplus The remaining activated sludge is discharged as surplus activated sludge 18. This surplus activated sludge 18 (if the biologically treated water 17 is further flocculated and separated, the flocculated sludge and surplus activated sludge 18
The washed residue 13 is added to the mixed sludge (mixed sludge of A dehydrated cake 20 with a low moisture content of about 55 to 63% is obtained.
この場合、汚物の含有率が少なくなっている洗浄し渣１
３を脱水助剤として利用するため、脱水ケーキ２０は非
衛生的なものではなく、そのまま肥料としても問題がな
い。しａ３をＶＬ接余ｉｌｌ活性汚泥１８の脱水助剤と
して利用する方法では、脱水機１９で脱水する際に強い
悪臭（し尿臭）が発生するのは避けられないばかりでな
（、脱水機を点検する場合に直接汚物に手を触れる機会
が多いため、運転担当者にとって著しく作業環境が悪い
が、本発明によりこのような欠点は改良される。In this case, the washed residue 1 with a reduced content of dirt
3 is used as a dehydration aid, the dehydrated cake 20 is not unhygienic and can be used as fertilizer without any problem. In the method of using Shia3 as a dehydration aid for VL-treated ill activated sludge 18, it is inevitable that a strong odor (human waste odor) will be generated when dewatering is performed in the dehydrator 19. When inspecting, there are many opportunities to directly touch dirt, which creates a very bad working environment for the operator, but the present invention improves this drawback.
なお、スクリュープレス脱水機」９にて分離された分離
水２１は、そのまま生物処理工程５に流入させて処理し
てもよいが、第２＠細目スクリーン】２の前にリサイク
ルすることによって、し渣の洗浄効果を高めることがで
きる。The separated water 21 separated in the screw press dehydrator 9 may be directly introduced into the biological treatment step 5 for treatment, but it can be recycled before the second (fine screen) 2. The cleaning effect of residue can be enhanced.
また、前記実施例では、第１、第２微細百スクリーン２
，１２を使用しているが、し尿処理場で夜間等運転を停
止するところでは、し渣３の洗浄をその運転停止中に行
うことで、前記化し尿１からのし渣３の回収及び洗浄し
渣１３の分離を１台の微細目スクリーンで兼用させるこ
とができる。In addition, in the embodiment, the first and second fine screens 2
, 12 are used, but in places where the operation is stopped at night, etc. at a human waste treatment plant, the human waste 3 can be collected and washed from the above-mentioned human waste 1 by cleaning the human waste 3 while the operation is stopped. One fine screen can be used for separating the residue 13.
また、前記スクリュープレス脱水機１９は、必ずしもこ
れに制限されることなく、洗浄し渣１３が脱水助剤とし
ての役目を果たし、！４１離性もよくなるため、ろ布を
用いた脱水機でも使用することができる。Further, the screw press dehydrator 19 is not limited to this, and the cleaning residue 13 serves as a dehydration aid. 41 Since the releasability is improved, it can also be used in a dehydrator using filter cloth.
以上述べたように本発明によれば、次に列記するような
極めて有益なる効果を奏するものである。As described above, according to the present invention, extremely beneficial effects as listed below are achieved.
■ 脱水ケーキの含水率が低く、かつ非衛生的でないか
ら、そのまま肥料として有効利用でき、乾燥叉はコンポ
スト化処理が不要になる。■ Since the moisture content of the dehydrated cake is low and it is not unhygienic, it can be effectively used as fertilizer as is, eliminating the need for drying or composting.
■ 脱水機からの悪臭の発生がなく、作業環境もよい。■ There is no bad odor from the dehydrator, and the working environment is good.
■ 回収されたし渣を洗浄するのに清水を使用する必要
がないから、節水効果があるほか、し尿の無希釈処理も
容易に可能になる。■ There is no need to use clean water to wash the collected human waste, which not only saves water, but also makes it easier to process human waste without dilution.
■ 回収されたし渣から汚物を洗浄除去するのに、生物
活性の高い生物処理工程内に生息する活性汚泥そのもの
を利用するので、洗浄効果、悪臭除去効果が高い。■ Activated sludge itself, which lives in the biological treatment process with high biological activity, is used to wash and remove filth from the collected residue, resulting in high cleaning and odor removal effects.
図面は本発明の一実施態を示す系統説明図である。
１−・・生し尿、２・・・第１微細目スクリーン、３−
・し渣、４〜・・除渣し尿、５−生物処理工程、６−活
性汚泥スラリ、７・・・ポンプ、８−４合槽、９・・ブ
ロワ、１０−・−混合物、１１−ポンプ、１２−第２微
細目スクリーン、１３−・洗浄し渣、１４−スクリーン
ろ液、１５遠心分離機、１６−汚泥、１７−生物処理水
、１８−・余剰活性汚泥、１９・・・スクリュープレス
脱水機、２〇−脱水ケーキ、２１−分離水。
特許出願人 荏原インフィルコ株式会社代理人 弁理
士 高 木 正 行代理人 弁理士 依 １
） 孝 次 部ａThe drawing is a system explanatory diagram showing one embodiment of the present invention. 1-... Fresh urine, 2... First fine screen, 3-
- Human waste, 4 - - Removed human waste, 5 - Biological treatment process, 6 - Activated sludge slurry, 7 - Pump, 8 - 4 Combined tank, 9 - Blower, 10 - - Mixture, 11 - Pump , 12-second fine screen, 13-washed residue, 14-screen filtrate, 15 centrifugal separator, 16-sludge, 17-biological treatment water, 18-excess activated sludge, 19-screw press Dehydrator, 20-Dehydrated cake, 21-Separated water. Patent applicant: Ebara Infilco Co., Ltd. Agent: Patent attorney: Masayuki Takagi Agent: Patent attorney: Yori 1
) Takatsugu part a
Claims (1)
したのち生物処理する方法において、前記し渣に前記生
物処理工程の活性汚泥スラリを混合したのち、さらに微
細目スクリーンに流入させ、得られたスクリーンろ液を
前記生物処理工程に返送する一方、分離されたし渣を前
記生物処理工程で発生した余剰活性汚泥に混合して機械
脱水することを特徴とするし尿処理方法。 ２、前記し渣と活性汚泥スラリとの混合をエアレーショ
ンによって行うものである特許請求の範囲第１項記載の
し尿処理方法。[Scope of Claims] 1. In a method of biologically treating raw human waste after flowing it through a fine mesh screen to remove human waste, the activated sludge slurry from the biological treatment step is mixed with the human waste, and then a fine mesh screen is applied. Human waste is allowed to flow into a screen and the obtained screen filtrate is returned to the biological treatment process, while the separated human waste is mixed with excess activated sludge generated in the biological treatment process and mechanically dehydrated. Processing method. 2. The human waste treatment method according to claim 1, wherein the human waste and the activated sludge slurry are mixed by aeration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59236684A JPS61114799A (en) | 1984-11-12 | 1984-11-12 | Treatment of excretion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59236684A JPS61114799A (en) | 1984-11-12 | 1984-11-12 | Treatment of excretion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61114799A true JPS61114799A (en) | 1986-06-02 |
| JPH0354000B2 JPH0354000B2 (en) | 1991-08-16 |
Family
ID=17004240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59236684A Granted JPS61114799A (en) | 1984-11-12 | 1984-11-12 | Treatment of excretion |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61114799A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5990494A (en) * | 1982-11-15 | 1984-05-24 | Matsushita Electric Ind Co Ltd | Audio equipment |
| JPH0330899A (en) * | 1989-06-29 | 1991-02-08 | Sumitomo Jukikai Envirotec Kk | Treatment of excretion |
| US5703326A (en) * | 1995-06-23 | 1997-12-30 | Nec Corporation | Connection of electrical leads in electroluminescent light by means of parallel connection to a plurality of conductors |
| JP2007000734A (en) * | 2005-06-22 | 2007-01-11 | Mitsubishi Heavy Ind Ltd | Method for treating organic waste water, and system therefor |
| WO2012147467A1 (en) * | 2011-04-26 | 2012-11-01 | 水ｉｎｇ株式会社 | Sludge-concentrating method and apparatus |
-
1984
- 1984-11-12 JP JP59236684A patent/JPS61114799A/en active Granted
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5990494A (en) * | 1982-11-15 | 1984-05-24 | Matsushita Electric Ind Co Ltd | Audio equipment |
| JPH0330899A (en) * | 1989-06-29 | 1991-02-08 | Sumitomo Jukikai Envirotec Kk | Treatment of excretion |
| US5703326A (en) * | 1995-06-23 | 1997-12-30 | Nec Corporation | Connection of electrical leads in electroluminescent light by means of parallel connection to a plurality of conductors |
| JP2007000734A (en) * | 2005-06-22 | 2007-01-11 | Mitsubishi Heavy Ind Ltd | Method for treating organic waste water, and system therefor |
| JP4671780B2 (en) * | 2005-06-22 | 2011-04-20 | 三菱重工環境・化学エンジニアリング株式会社 | Organic wastewater treatment method and system |
| WO2012147467A1 (en) * | 2011-04-26 | 2012-11-01 | 水ｉｎｇ株式会社 | Sludge-concentrating method and apparatus |
| CN103492325A (en) * | 2011-04-26 | 2014-01-01 | 水翼株式会社 | Sludge-concentrating method and apparatus |
| JPWO2012147467A1 (en) * | 2011-04-26 | 2014-07-28 | 水ｉｎｇ株式会社 | Sludge concentration method and apparatus |
| AU2012248673B2 (en) * | 2011-04-26 | 2017-04-13 | Swing Corporation | Sludge-concentrating method and apparatus |
| CN109336351A (en) * | 2011-04-26 | 2019-02-15 | 水翼株式会社 | Sludge concentration method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0354000B2 (en) | 1991-08-16 |
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