JPS5881500A

JPS5881500A - Treatment of sludge

Info

Publication number: JPS5881500A
Application number: JP56180557A
Authority: JP
Inventors: Mutsumi Takeda; 武田　睦
Original assignee: Individual
Current assignee: Individual
Priority date: 1981-11-10
Filing date: 1981-11-10
Publication date: 1983-05-16

Abstract

PURPOSE:To accelerate the dehydration of sludge formed in the process of purifying filthy water such as industria waste water or sludge containing excretions or these concentrated matter, and to promote the conversion of said sludge into compost or fuel, by mixing coke having a particle size of 10-0.01mm. in the sludge, and agitating the mixture. CONSTITUTION:After coke having a particle size of 10-0.01mm. is mixed in sludge formed in the process of purifying filthy water such as sewage, night soil, livestock waste water or industrial waste water, the mixture is agitated and spontaneously dehydrated. As a result, the dehydration of sludge can be accelerated, and the conversion of sludge into compost or fuel can be promoted. Said rapid dehydration eliminates the formation of rabbles. In order to further enhance the effect of deodorization, the incineration ash of industrial waste matter such as filature sludge, coal ash, the incineration ash of municipal sewage sludge, etc. may be added to the sludge at a ratio of 5-10wt%.

Description

【発明の詳細な説明】この発明は、汚泥の脱水処理方法に関するものであり、
この明細書全体において、汚泥とは、下水、呆尿、家畜
排水、・産業排水等の汚水処理によって発生した汚泥や
糞尿、その濃縮物の総称として用いる。[Detailed Description of the Invention] This invention relates to a sludge dewatering method,
Throughout this specification, sludge is used as a general term for sludge, excrement, and concentrates generated from the treatment of sewage, wastewater, livestock wastewater, industrial wastewater, and the like.

省エネルギ化が図られている昨今、汚泥の有効利用を図
るため、汚泥を自然脱水させて肥料化或いは燃料化する
ことが行なわれている。しかし、自然脱水させるために
は２乃至３ケ月と長時間かかつていた。BACKGROUND ART Nowadays, in order to save energy, sludge is naturally dehydrated and turned into fertilizer or fuel in order to make effective use of sludge. However, it took a long time, 2 to 3 months, to dehydrate naturally.

この発明は、短期間に汚泥から脱水を図ることを目的と
してなされたもので、汚泥に粒度が約１０　　’閣乃至
０．０１　ｍ１１１のコークスを混入攪拌し、汚泥から
の脱水を促進し、肥料化、燃料化をはやめるものである
。This invention was made with the aim of dewatering sludge in a short period of time.Coke with a particle size of about 10 m to 0.01 m111 is mixed and stirred into sludge to promote dewatering from the sludge, and it can be used as fertilizer. This means that it will no longer be used as fuel.

この発明が脱水効果を有することは次の２つの実験結果
よシ明らかである。It is clear from the following two experimental results that this invention has a dehydrating effect.

第１の実験は、製紙廃液及び養豚場の洗浄水１００ｍ１
にそれぞれ粒度が０．０１．乃至１ｏｌｌｌ１１で熱量
が７ｏｏｏＫｃａｌ／ｋｇのコークス１ｐを添加攪拌し
、次亜塩素酸ナトリウムを添加攪゛拌し、塩化第二鉄で
ＰＨを酸にし、苛性ソーダで中性に戻し、最後に高分子
でフロックを作り、完全に沈降させたものと、製紙廃液
及び養豚場の洗浄水とをそれぞれ１８・５ＣＩＩＩＮ０
３の濾紙で濾過した場合の経過時間を測定したものであ
る。そ、の結果を下記の表に示す。The first experiment consisted of 100 ml of paper manufacturing waste and pig farm washing water.
The particle size is 0.01. Add and stir 1 p of coke with a calorific value of 7 oooKcal/kg at 1 olll 11, add and stir sodium hypochlorite, make the pH acidic with ferric chloride, return to neutral with caustic soda, and finally add polymer 18.5CIIIN0 of the flocs made and completely settled, paper manufacturing waste liquid and pig farm washing water.
The elapsed time when filtering with the filter paper No. 3 was measured. The results are shown in the table below.

第２の実験は、含水率９０％の、豚の膠原１０’ｏｆＩ
に対して、上記のコークスをｌｏｔ／　、　２０ｐ　、
　３０ｆそれを比較したものである。なお、これらの測
定は毎日午前９時に行ない、その後に約１分間攪拌を行
なっている。The second experiment consisted of porcine collagen 10'ofI with a moisture content of 90%.
For, the above coke is lot/, 20p,
30f is compared. Note that these measurements were performed every day at 9:00 a.m., followed by stirring for about 1 minute.

これら両実験結果からも判るように、コークスを汚泥に
混入攪拌することによシ、汚泥からの脱水を促進するこ
とができ、肥料化或いは燃料化を早めることができ、脱
水が早急に行なわれることによシコークスを混入せずに
自然脱水させた場合に大量に発生するウジ虫もほとんど
発生しない。As can be seen from the results of both of these experiments, by mixing coke into sludge and stirring it, it is possible to accelerate dewatering from the sludge, and it is possible to speed up the conversion into fertilizer or fuel, and dewatering is carried out quickly. In particular, maggots, which occur in large quantities when natural dehydration is performed without mixing sycoke, are hardly generated.

この発明の実施例としては、上記の汚泥に対し上記のコ
ークスを混入攪拌し、真空脱水機等の脱水機にかけるも
のが考えられる。この場合、第１の実験結果よシ脱水機
の目詰シ）；はとんどないことが容易に理解される。As an embodiment of the present invention, the above sludge may be mixed with the above coke and stirred, and then subjected to a dehydrator such as a vacuum dehydrator. In this case, it is easily understood that the results of the first experiment (i.e., clogging of the dehydrator) are highly unlikely.

なお、第２の実験結果よシ、コー・クスを混入すること
によシ成る程度脱臭効果が生じることが判るが、脱臭効
果を更に高めたい場合、製紙汚泥のような産業廃棄物の
焼却灰、石炭灰の焼却灰、都市下水汚泥の焼却灰、都市
ゴミの焼却灰、家畜の糞尿等の焼却灰等を汚泥当シ約５
乃至１０重重量部加すればよい。上記の製紙汚泥めは、
Ｓｉ・・・・１２・６２％　、　Ａｌ−’−７．５３％
、Ｆｅ・・・−０，３６％、　Ｃａ・・・−１，０４％
含ミ、他ニＸ　（ｄｌ］析カラＡｇ、５ｉ４０１ｏ（Ｏ
Ｈ）２カ存在するもので、石炭灰はＭｇ・・・・０．３
０　％、Ｎａ・・・・ｏ、９９％。The results of the second experiment show that mixing coke produces a deodorizing effect to a certain degree, but if you want to further increase the deodorizing effect, you can use incinerated ash from industrial waste such as papermaking sludge. , incinerated ash of coal ash, incinerated ash of urban sewage sludge, incinerated ash of municipal garbage, incinerated ash of livestock manure, etc.
10 to 10 parts by weight may be added. The paper sludge mentioned above is
Si...12.62%, Al-'-7.53%
, Fe...-0,36%, Ca...-1,04%
Including Mi, other d
H) 2 exist, and coal ash has Mg...0.3
0%, Na...o, 99%.

Ｃａ・・・・２−０３％、Ｆｅ−・＋拳Ｏ・８７％、Ｓ
’ｘ０２・・−１’２−６３％、Ａｌ・・・・ｚ、８ｏ
％含み、強熱減量中′水分４６・２俤であり、Ｘ線回析
からｓｉ、ｏ３、ＣａＣＯ３の存在が考えられるもので
ある。都市下水汚泥の焼却灰は、Ｍｇ・・・・α８９俤
、Ｎａ、・・−１，４６％、Ｃａ・・・−２４’、６７
％、Ｆｅ・−・・３．３２係、Ｓｉ、Ｏ３・・・・２１
．ｉ９１チ、Ａｆｉ・・・・６．２５係含み、強熱減量
＋水分１２．０％で、Ｘ線回析から５１０２、ＣａＣＯ
３ノ存在が考えられるものである。Ca・・・2-03%, Fe-・+Fist O・87%, S
'x02...-1'2-63%, Al...z, 8o
%, and the moisture content during the ignition loss was 46.2 t, and the presence of Si, O3, and CaCO3 is considered from the X-ray diffraction. Incineration ash of urban sewage sludge contains Mg...α89, Na...-1,46%, Ca...-24',67
%, Fe...3.32, Si, O3...21
．． i91chi, Afi...6.25%, ignition loss + moisture 12.0%, X-ray diffraction shows 5102, CaCO
There are three possible existences.

特許出願人　　武　１）　　睦代理人　清水　哲ほか２名Patent applicant Takeshi 1) Mutsumi Agent Tetsu Shimizu and 2 others

Claims

[Claims]

(11 sludge has a particle size of approximately 101!Il! to 0.oxl)
A method for treating sludge with Btt, which comprises mixing and stirring llll of coke.