JPH038332Y2 - - Google Patents
Info
- Publication number
- JPH038332Y2 JPH038332Y2 JP17964587U JP17964587U JPH038332Y2 JP H038332 Y2 JPH038332 Y2 JP H038332Y2 JP 17964587 U JP17964587 U JP 17964587U JP 17964587 U JP17964587 U JP 17964587U JP H038332 Y2 JPH038332 Y2 JP H038332Y2
- Authority
- JP
- Japan
- Prior art keywords
- screen
- human waste
- organic wastewater
- waste paper
- disintegration
- 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
Links
- 238000000034 method Methods 0.000 claims description 21
- 239000010893 paper waste Substances 0.000 claims description 14
- 239000010802 sludge Substances 0.000 claims description 14
- 239000002351 wastewater Substances 0.000 claims description 10
- 239000013055 pulp slurry Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 6
- 238000002203 pretreatment Methods 0.000 claims description 4
- 239000010865 sewage Substances 0.000 claims description 4
- 239000010800 human waste Substances 0.000 description 22
- 239000012535 impurity Substances 0.000 description 8
- 239000000835 fiber Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 210000002700 urine Anatomy 0.000 description 3
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
- 229920006317 cationic polymer Polymers 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010907 mechanical stirring Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 208000005156 Dehydration Diseases 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000000852 hydrogen donor Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000011268 mixed slurry Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
Landscapes
- Treatment Of Biological Wastes In General (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、各種有機性汚水を生物処理する際の
前処理装置に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a pretreatment device for biologically treating various organic wastewaters.
従来、有機性汚水、例えばし尿を生物処理する
際の前処理工程としては、単にし尿をスクリーン
に供給してし尿中の紙などの繊維分その他の夾雑
物を除去するものが代表的なものであつた。この
ため、し尿中の微細SSとコロイド粒子は、前処
理工程では除去されることなく後続する生物処理
工程に供給され、また粒径小さな繊維分等もスク
リーンに捕促されることなく流出して生物処理工
程に供給される。このようなスクリーンで捕促さ
れなかつた粒径の小さな夾雑物は、生物処理工程
に後続して限外過膜などの装置によつて固液分
離する場合に、装置内の流路閉塞トラブルの主原
因となつていた。
Conventionally, the typical pretreatment process for biologically treating organic wastewater, such as human waste, has been to simply feed the human waste to a screen to remove fibers such as paper and other impurities from the human waste. It was hot. For this reason, fine SS and colloidal particles in human waste are not removed in the pretreatment process but are supplied to the subsequent biological treatment process, and small fibers, etc., flow out without being caught by the screen and are biologically Supplied to processing steps. Small-sized contaminants that are not captured by such a screen can cause problems with flow path clogging in the device when solid-liquid separation is performed using a device such as an ultrafiltration membrane following the biological treatment process. It was the main cause.
一方、し尿にカチオン系高分子疑集剤等を注入
して疑集フロツク形成（以下「ポリマ疑集法」と
いう）を行つたのち、スクリーンに供給して固液
分離するという方法を採用することによつて、繊
維分離等の除去効果を高めようとする方法も提案
されている（特開昭61−185400号参照）が、次の
ような重大な欠点があつた。 On the other hand, a method is adopted in which a cationic polymer collector is injected into the human waste to form a collection floc (hereinafter referred to as the "polymer collection method"), and then fed to a screen for solid-liquid separation. A method has been proposed to improve the removal effect such as fiber separation (see JP-A-61-185400), but it has the following serious drawbacks.
すなわち、このようなポリマ疑集法では、し尿
中の繊維分離等のほかに微細SS、コロイド性
BODのほぼすべてが疑集除去されてしまう。こ
の結果、前処理工程でBOD除去率が高くなりす
ぎ、後続する生物処理工程で生物学的硝化脱窒素
法を採用する場合、脱窒素のためのBOD源（水
素供与体）が不足してしまうという問題点があつ
た。 In other words, in addition to separating fibers in human urine, this polymer aggregation method can also be used to separate fine SS and colloidal particles.
Almost all of the BOD will be removed. As a result, the BOD removal rate becomes too high in the pretreatment process, and when a biological nitrification and denitrification method is adopted in the subsequent biological treatment process, there is a shortage of BOD source (hydrogen donor) for denitrification. There was a problem.
さらにもう一つの大きな問題点として、後続す
る生物処理工程でCO2とH2Oに分解されるべき
SS性、コロイド性BODが、前処理工程で除去さ
れてしまうため、全体の処理プロセスから発生す
る汚泥量が、ポリマ疑集法を採用しない前処理を
採用した場合に比べて増加してしまうという欠点
があり、また高分子疑集剤注入コストもかかると
いう経済的な欠点も当然あつた。 Another major problem is that CO 2 must be decomposed into CO 2 and H 2 O in the subsequent biological treatment process.
Because SS and colloidal BOD are removed in the pretreatment process, the amount of sludge generated from the entire treatment process increases compared to when pretreatment without polymer aggregation is used. Naturally, there were disadvantages, and there was also an economic disadvantage in that the injection cost of the polymer collector was high.
本考案は、前記従来の諸問題点を解決すること
を課題とし、具体的には、有機性汚水中の夾雑物
を疑集剤などを使用せずにスクリーンによつて効
果的に除去し、同時にSS性、コロイド性BODを
過度に除去しないようにする新規な有機性汚水の
前処理装置を提供しようとするものである。 The purpose of the present invention is to solve the above-mentioned conventional problems, and specifically, to effectively remove impurities in organic wastewater using a screen without using a collector, At the same time, the present invention aims to provide a new pre-treatment device for organic wastewater that prevents excessive removal of SS and colloidal BOD.
本考案は、有機性汚水を生物処理する際の前処
理装置であつて、有機性汚水をスクリーン分離装
置に導く径路に、故紙離解装置で水の共存下に故
紙を離解して得られたパルプスラリーを混合する
混合部を設けたことを特徴とする有機性汚水の前
処理装置である。
The present invention is a pre-treatment device for biological treatment of organic wastewater, in which pulp obtained by disintegrating waste paper in the coexistence of water in a waste paper disintegration device is placed in a path leading organic wastewater to a screen separation device. This is a pretreatment device for organic sewage characterized by being provided with a mixing section for mixing slurry.
本考案の一実施例を、し尿を生物処理する際の
前処理に適用した場合を例にとり、図面を参照し
ながら以下に説明する。
An embodiment of the present invention will be described below with reference to the drawings, taking as an example a case in which it is applied to pretreatment for biological treatment of human waste.
図面において、し尿を回転ウエツジスクリーン
８などのスクリーン分離装置に導くし尿配管１の
途中に混合槽２を設ける一方、故紙３を水４の共
存下で機械的撹拌により離解してパルプスラリー
状にする故紙離解装置、例えばパルパー５から、
ポンプ６によりパルプスラリーを移送する配管７
をし尿配管１又は混合槽２に連結する。 In the drawing, a mixing tank 2 is provided in the middle of a human waste pipe 1 that leads human waste to a screen separation device such as a rotating wedge screen 8, while a waste paper 3 is disintegrated by mechanical stirring in the coexistence of water 4 to form a pulp slurry. from a waste paper disintegration device, such as pulper 5,
Piping 7 for transferring pulp slurry by pump 6
Connect to human waste piping 1 or mixing tank 2.
また、回転ウエツジスクリーン８には、分離し
たスクリーン分離汚泥９を脱水するためにスクリ
ユープレス型脱水機１０などの脱水機が付設さ
れ、スクリユープレス型脱水機１０から流出する
脱水分離液１１と回転ウエツジスクリーン８から
流出するし尿１２とを一旦貯留し、ポンプ１４で
生物処理工程へ移送するための貯留槽１３も付設
されている。 Further, a dehydrator such as a screw press type dehydrator 10 is attached to the rotating wedge screen 8 in order to dehydrate the separated screen-separated sludge 9, and the dehydrated separated liquid 11 flowing out from the screw press type dehydrator 10 A storage tank 13 is also provided in which the human waste 12 flowing out from the rotating wedge screen 8 is temporarily stored and transferred to the biological treatment process by a pump 14.
図中、１５はスクリユープレス型脱水機１０で
得られた脱水ケーキを示す。 In the figure, 15 indicates a dehydrated cake obtained by the screw press type dehydrator 10.
しかして、パルパー５で、新聞紙、雑誌などの
故紙３に水４を加えて強力な機械的撹拌を行い、
故紙３をパルプスラリー状に離解し、このパルプ
スラリーをポンプ６によりし尿配管１から導かれ
るし尿と共に混合槽２に混入させ、ここでよく混
合する。この混合槽２におけるし尿とパルプスラ
リーの混合液を回転ウエツジスクリーン８に供給
して、し尿中の繊維分離等の夾雑物をスクリーン
分離するが、この時し尿中の夾雑物の除去効果が
著しく向上することが、本考案者の実験によつて
確認された。 Then, in a pulper 5, water 4 is added to waste paper 3 such as newspapers and magazines, and strong mechanical stirring is performed.
The waste paper 3 is disintegrated into a pulp slurry, and this pulp slurry is mixed into the mixing tank 2 together with human waste led from the human waste pipe 1 by a pump 6, and mixed well there. The mixed solution of human waste and pulp slurry in the mixing tank 2 is supplied to the rotating wedge screen 8 to screen-separate impurities such as fibers in the human urine. This improvement was confirmed through experiments by the present inventor.
し尿に故紙パルプスラリーを混合することによ
つて、し尿中の夾雑物のスクリーンにおける回収
率が向上する原因の詳細なメカニズムは、現時点
で明確ではないが、おそらくパルプスラリーに含
まれる高濃度の繊維分にし尿中の夾雑物がからみ
合つてスクリーンに捕足されやすい形になるこ
と、およびスクリーン面に捕足された繊維分が一
種の過助剤としての役割を果たすためではない
かと想像される。 The detailed mechanism of why mixing wastepaper pulp slurry with human waste improves the recovery rate of impurities in human waste in the screen is not clear at present, but it is probably due to the high concentration of fibers contained in the pulp slurry. It is thought that this is because the impurities in human urine become entangled and become easily captured by the screen, and the fibers captured on the screen surface act as a kind of super-assistant. .
したがつて、回転ウエツジスクリーン８から流
出するし尿１２は、夾雑物が効果的に除去され、
しかもSS性、コロイド性BODを十分含んだもの
となつて貯留槽１３に貯留され、同じ貯留槽１３
に貯留されるスクリユープレス型脱水機１０から
の脱水分離液１１と共にポンプ１４によつて生物
処理工程へ移送される。 Therefore, impurities are effectively removed from the human waste 12 flowing out from the rotating wedge screen 8.
Moreover, it becomes a material containing sufficient SS properties and colloidal BOD and is stored in the storage tank 13.
It is transferred to the biological treatment process by the pump 14 together with the dehydrated separated liquid 11 from the screw press type dehydrator 10 stored in the .
また、パルパー５で加える水としては、後続す
る生物処理工程から排出される余剰活性汚泥を利
用するのが合理的であり、その時にはし尿を清水
で希釈する必要がない。しかも、余剰活性汚泥の
脱水処理もスクリユープレス型脱水機１０で同時
に行うことができるという合理性もある。この場
合、故紙パルプと余剰活性汚泥との混合スラリー
に対して、カチオン系高分子疑集剤を添加して疑
集フロツク形成させたのち、し尿配管１に導かれ
るし尿と混合するようにすることが好ましい。こ
のように余剰活性汚泥を利用することにより、回
転ウエツジスクリーン８で分離されたスクリーン
分離汚泥９は、し尿中の夾雑物、故紙パルプおよ
び余剰活性汚泥が疑集一体化したものとなるの
で、スクリユープレス型脱水機１０にとつて非常
に適した性状をつており、容易に脱水できること
が確認された。 Furthermore, as the water added by the pulper 5, it is reasonable to use surplus activated sludge discharged from the subsequent biological treatment process, and in that case there is no need to dilute the human waste with fresh water. Furthermore, there is also the rationality that the dehydration treatment of excess activated sludge can be performed at the same time using the screw press type dehydrator 10. In this case, a cationic polymer flocculant is added to the mixed slurry of waste paper pulp and excess activated sludge to form a floc, and then mixed with human waste led to the human waste pipe 1. is preferred. By using the surplus activated sludge in this way, the screen-separated sludge 9 separated by the rotating wedge screen 8 becomes a mixture of impurities in human waste, waste paper pulp, and surplus activated sludge. It was confirmed that the material had properties very suitable for the screw press type dehydrator 10 and that it could be easily dehydrated.
以上述べたように本考案によれば、次ような有
用なる効果を得ることができる。
As described above, according to the present invention, the following useful effects can be obtained.
有機性汚水の夾雑物のスクリーンにおける除
去率を、疑集剤を使わずに向上させることがで
き、汚水中のSS性、コロイド性BODはスクリ
ーンでほとんど除去されないで流出してゆくの
で、後続する生物処理工程でのBOD不足を招
くことがない。 The removal rate of impurities in organic sewage can be improved without using a dispersing agent, and SS and colloidal BOD in wastewater are hardly removed by the screen and flow out, so they can be easily removed by the screen. There is no risk of BOD shortage in the biological treatment process.
スクリーンで除去されないで流出してゆく
SS性、コロイド性BODは、後続する生物処理
工程でCO2とH2Oに分解されるから、汚泥発生
量が減少する。 Leaks out without being removed by the screen
Since SS and colloidal BOD are decomposed into CO 2 and H 2 O in the subsequent biological treatment process, the amount of sludge generated is reduced.
故紙の離解用水として、後続する生物処理工
程から排出される余剰活性汚泥を用いることが
できるから、有機性汚水の前処理と汚泥処理の
一元化が可能となり、しかも脱水性の非常に良
いスクリーン分離汚泥を得ることができる。 Surplus activated sludge discharged from the subsequent biological treatment process can be used as waste paper disintegration water, making it possible to unify organic sewage pretreatment and sludge treatment, and screen-separated sludge with very good dewatering properties. can be obtained.
第１図は本考案の一実施例を示す説明図であ
る。
１……し尿配管、２……混合槽、３……故紙、
４……水、５……パルパー、６，１４……ポン
プ、７……配管、８……回転ウエツジスクリー
ン、９……スクリーン分離汚泥、１０……スクリ
ユープレス型脱水機、１１……脱水分離液、１２
……し尿、１３…貯留槽、１５……脱水ケーキ。
FIG. 1 is an explanatory diagram showing an embodiment of the present invention. 1... Human waste piping, 2... Mixing tank, 3... Waste paper,
4... Water, 5... Pulper, 6, 14... Pump, 7... Piping, 8... Rotating wedge screen, 9... Screen separated sludge, 10... Screw press type dehydrator, 11... Dehydrated separated liquid, 12
... Human waste, 13 ... Storage tank, 15 ... Dehydrated cake.
Claims (1)
あつて、有機性汚水をスクリーン分離装置に導
く径路に、故紙離解装置で水の共存下に故紙を
離解して得られたパルプスラリーを混合する混
合部を設けたことを特徴とする有機性汚水の前
処理装置。 (2) 前記故紙離解装置で使用する水として、後続
する生物処理工程から排出される余剰活性汚泥
を利用するものである実用新案登録請求の範囲
第１項記載の有機性汚水の前処理装置。[Claims for Utility Model Registration] (1) A pre-treatment device for biologically treating organic wastewater, which uses a wastepaper disintegration device to feed waste paper in the coexistence of water into a path leading organic wastewater to a screen separation device. A pre-treatment device for organic wastewater, characterized in that it is provided with a mixing section for mixing pulp slurry obtained by disintegration. (2) The organic sewage pretreatment device according to claim 1, which utilizes surplus activated sludge discharged from a subsequent biological treatment process as the water used in the waste paper disintegration device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17964587U JPH038332Y2 (en) | 1987-11-27 | 1987-11-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17964587U JPH038332Y2 (en) | 1987-11-27 | 1987-11-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0184714U JPH0184714U (en) | 1989-06-06 |
| JPH038332Y2 true JPH038332Y2 (en) | 1991-02-28 |
Family
ID=31471192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17964587U Expired JPH038332Y2 (en) | 1987-11-27 | 1987-11-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH038332Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6753704B2 (en) * | 2016-06-09 | 2020-09-09 | 株式会社丸島アクアシステム | Solid-liquid separator |
-
1987
- 1987-11-27 JP JP17964587U patent/JPH038332Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0184714U (en) | 1989-06-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2017100130A (en) | Anaerobic digestion treatment method and anaerobic digestion treatment device | |
| JPH038332Y2 (en) | ||
| JPS61257300A (en) | Dehydrating method for sludge | |
| JPH04131197A (en) | Disposal of night soil type sewage and apparatus therefor | |
| JP2655284B2 (en) | Treatment method of human wastewater | |
| JPS62237913A (en) | Treating method and treating agent for polluted water | |
| JPH04131199A (en) | Concurrent disposal of night soil and septic tank sludge | |
| KR960000313B1 (en) | Sludge dehydration method | |
| JPH06343999A (en) | Dehydration process for sludge | |
| JPH0790237B2 (en) | Human waste treatment method | |
| JPH0649199B2 (en) | Human waste system treatment equipment | |
| JPH0317932Y2 (en) | ||
| JP3906323B2 (en) | Treatment method for highly concentrated waste liquid | |
| JPH0141399B2 (en) | ||
| JPS6238295A (en) | Treatment of organic sewage | |
| JPH0440800Y2 (en) | ||
| KR940001805B1 (en) | Sludge treatment method | |
| JPH0337760Y2 (en) | ||
| JPH0741275B2 (en) | Sludge treatment method and equipment for organic wastewater | |
| JPH0358797B2 (en) | ||
| JPS60225699A (en) | Dehydration treatment of organic sludge | |
| JPH10337599A (en) | Method for dehydration of sludge | |
| JPS5851995A (en) | Treatment of night soil | |
| JPS61263700A (en) | Joint treatment of organic sludge and night soil | |
| JPH0321398A (en) | Treatment of organic sludge |