JPH0731985A - Treating method of sludge and device therefor - Google Patents
Treating method of sludge and device thereforInfo
- Publication number
- JPH0731985A JPH0731985A JP5224005A JP22400593A JPH0731985A JP H0731985 A JPH0731985 A JP H0731985A JP 5224005 A JP5224005 A JP 5224005A JP 22400593 A JP22400593 A JP 22400593A JP H0731985 A JPH0731985 A JP H0731985A
- Authority
- JP
- Japan
- Prior art keywords
- water
- sewage
- carbonated water
- solid matter
- calcium
- 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
- 239000010802 sludge Substances 0.000 title claims description 15
- 238000000034 method Methods 0.000 title claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 19
- 239000011575 calcium Substances 0.000 claims abstract description 19
- 239000010865 sewage Substances 0.000 claims abstract description 19
- 238000001914 filtration Methods 0.000 claims abstract 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 38
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 19
- 239000001569 carbon dioxide Substances 0.000 claims description 19
- 239000002351 wastewater Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 2
- 239000007787 solid Substances 0.000 abstract description 16
- 239000004568 cement Substances 0.000 abstract description 12
- 239000000047 product Substances 0.000 abstract description 4
- 239000000706 filtrate Substances 0.000 abstract description 2
- 230000003472 neutralizing effect Effects 0.000 abstract description 2
- 229960004424 carbon dioxide Drugs 0.000 description 17
- 239000007789 gas Substances 0.000 description 12
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- -1 cement sludge Chemical compound 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Landscapes
- Treatment Of Sludge (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、スラッジの処理方法
及び装置、特に生コンクリート工場やコンクリート製品
工場等におけるセメントスラッジや鉄鋼製錬所における
スラグの廃液等カルシウムを含む汚水の処理方法及び装
置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for treating sludge, and more particularly to a method and apparatus for treating cement sludge in ready-mixed concrete factories, concrete product factories, etc. .
【０００２】[0002]
【従来の技術】生コンクリート工場等では、戻りコンク
リート、ミキサ車の洗浄、製造機械の洗浄等によりセメ
ント、骨材を含んだ多量の汚水が発生する。従来この汚
水の処理は、トロンメル等により骨材部分を分離回収
し、その後の残分は、練り水として再使用したり、また
沈殿層やフイルタープレス等を用いセメント分を分離除
去し、固形分を含まない水とした後、酸で中和して放流
していた。2. Description of the Related Art In a ready-mixed concrete factory or the like, a large amount of sewage containing cement and aggregates is generated by washing return concrete, mixer trucks, and manufacturing machinery. Conventionally, this sewage treatment is performed by separating and recovering the aggregate part with a trommel or the like, and the remaining residue is reused as kneading water, or the cement content is separated and removed using a sedimentation layer or a filter press to obtain a solid content. After being made into water containing no water, it was neutralized with an acid and discharged.
【０００３】しかしながら、骨材部分を回収し、セメン
ト分を含んだ水を練り水として再使用すると、コンクリ
ートの強度低下を招くという欠点があり、またセメント
分を取り除いた後、中和処理して放流する方式は、設
備、工程が複雑になる上、コストがかかるという欠点が
ある。However, when the aggregate part is recovered and the water containing the cement component is reused as the kneading water, there is a drawback that the strength of the concrete is lowered, and after the cement component is removed, it is neutralized. The method of releasing the water has the drawback that the equipment and process are complicated and the cost is high.
【０００４】[0004]
【発明が解決しようとする課題】この発明は、極めて簡
単な方法及び装置により、セメントスラッジ等カルシウ
ム分を含む汚水から固形分を有用なブロック状固化体と
して回収すると同時に水分のｐＨを中和調整して放流で
きる状態にするものである。SUMMARY OF THE INVENTION The present invention uses a very simple method and apparatus to recover solids from wastewater containing calcium, such as cement sludge, as useful block-like solidified bodies, and at the same time, neutralize and adjust the pH of water. Then, it is ready to be discharged.
【０００５】[0005]
【課題を解決するための手段】上述の目的を達成するた
めに、この発明のスラッジの処理方法は、カルシウムを
含む汚水を濾過すると共に濾過物に炭酸ガス若しくは炭
酸水を作用させることを特徴としている。またこの発明
のスラッジの処理装置は、濾床を有する本体内上方にカ
ルシウムを含む汚水の供給手段と炭酸ガス若しくは炭酸
水の供給手段を設けると共に、本体内下方と前記炭酸ガ
ス若しくは炭酸水の供給手段と連通する循環路を備える
ことを特徴としている。In order to achieve the above object, the method for treating sludge of the present invention is characterized in that wastewater containing calcium is filtered and carbon dioxide or carbonated water acts on the filtered material. There is. Further, the sludge treatment apparatus of the present invention is provided with a supply means for supplying sewage containing calcium and a supply means for carbon dioxide gas or carbonated water in the upper part of the main body having a filter bed, and a lower part in the main body and for supplying the carbon dioxide gas or carbonated water. It is characterized in that it has a circulation path communicating with the means.
【０００６】[0006]
【作用】この発明によれば、セメントスラッジ等カルシ
ウム分を含む汚水が固形分と水分に分離され、この両者
に炭酸ガス若しくは炭酸水が作用することにより、固形
分中のカルシウム分が炭酸化することにより固化し、有
用なブロック状固化体として回収でき、水分は中和調整
され放流することができる状態にする。According to the present invention, sewage containing calcium content such as cement sludge is separated into solid content and water content, and carbon dioxide gas or carbonated water acts on both of them to carbonize the calcium content in the solid content. As a result, it is solidified and can be recovered as a useful block-shaped solidified body, and the water content is neutralized and adjusted so that it can be discharged.
【０００７】[0007]
【実施例】以下、この発明の１実施例を図面に基いて説
明する。この発明のスラッジの処理装置１は、濾床２を
有する本体３、カルシウムを含む汚水の供給手段４、炭
酸ガス若しくは炭酸水の供給手段５、及びこの炭酸ガス
若しくは炭酸水の供給手段５と連通する循環路６から主
として構成され、本体３の下方には水分の排出管７が設
けられている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The sludge treatment apparatus 1 of the present invention communicates with a main body 3 having a filter bed 2, a calcium-containing wastewater supply means 4, a carbon dioxide gas or carbonated water supply means 5, and this carbon dioxide gas or carbonated water supply means 5. It is mainly composed of a circulation path 6 and a water discharge pipe 7 is provided below the main body 3.
【０００８】濾床２は、本体３を上部室８と下部室９と
に仕切り、上部室８に供給される汚水を濾過するもので
多孔質材料が用いられる。多孔質材料としては、穴あき
鉄板などに透水性のシート、フィルム、膜等を載置若し
くは貼付して使用するほか、コンクリート用骨材を敷並
べておいても良い。コンクリート用骨材を使用するとき
は、ブロック状固化体の骨材としてそのまま利用でき
る。The filter bed 2 divides the main body 3 into an upper chamber 8 and a lower chamber 9 and filters waste water supplied to the upper chamber 8 and is made of a porous material. As the porous material, a water-permeable sheet, film, film or the like may be placed or attached on a perforated iron plate or the like, or concrete aggregate may be laid. When the aggregate for concrete is used, it can be directly used as the aggregate of the block-shaped solidified body.
【０００９】供給手段４は、図示しない汚水貯槽からポ
ンプ手段等によりカルシウムを含む汚水を供給するもの
で、本体３の上部室８と連通する管路からなり、供給手
段５は、図示しないコンプレッサ若しくはポンプ手段等
により炭酸ガス若しくは炭酸水を供給するもので、本体
３の上部室８と連通する管路からなる。また、循環路６
は、炭酸ガス若しくは炭酸水を繰返し利用するもので、
本体３の下部室９と炭酸ガス若しくは炭酸水の供給手段
５とをポンプ手段１０を介して連通するように設けられ
る。なお、１１、１２及び１３は、それぞれ供給手段
４、供給手段５及び排出管７に設けられた弁である。The supply means 4 is for supplying calcium-containing sewage from a sewage storage tank (not shown) by means of a pump or the like, and is composed of a conduit communicating with the upper chamber 8 of the main body 3, and the supply means 5 is a compressor (not shown) or Carbon dioxide or carbonated water is supplied by a pump means or the like, and is composed of a conduit communicating with the upper chamber 8 of the main body 3. In addition, circuit 6
Is to repeatedly use carbon dioxide gas or carbonated water,
The lower chamber 9 of the main body 3 and the carbon dioxide gas or carbonated water supply means 5 are provided so as to communicate with each other via a pump means 10. Reference numerals 11, 12 and 13 are valves provided in the supply means 4, the supply means 5 and the discharge pipe 7, respectively.
【００１０】このように構成されたこの発明のスラッジ
の処理装置１において、カルシウムを含む汚水及び炭酸
ガス若しくは炭酸水が、それぞれ矢印Ａ、Ｂに示すよう
に供給手段４及び供給手段５から本体３の上部室８内へ
供給されると、汚水は濾床２上で濾過され、固形分１４
と水分１５に分離される。ここで固形分１４は、炭酸ガ
ス若しくは炭酸水が透過することにより、固形分中のカ
ルシウム分が炭酸化して固化する。また、炭酸ガス若し
くは炭酸水は、水分１５にも作用し、水分のｐＨを中和
調整しながら循環路６を経て再使用される。In the sludge treatment apparatus 1 of the present invention constructed as described above, the sewage containing carbon and carbon dioxide gas or carbonated water are supplied from the supply means 4 and the supply means 5 to the main body 3 as shown by arrows A and B, respectively. When fed into the upper chamber 8 of the sewage, the sewage is filtered on the filter bed 2 to obtain a solid content of 14
And water is separated into 15. Here, the solid content 14 is solidified by carbonating the calcium content in the solid content by permeation of carbon dioxide gas or carbonated water. Further, carbon dioxide gas or carbonated water also acts on the water 15 and is reused via the circulation path 6 while neutralizing and adjusting the pH of the water.
【００１１】ここでカルシウムを含む汚水としては、生
コンクリート工場等で発生するセメントをカルシウム源
とする汚水等、カルシウムが炭酸化する形態で含有され
ている各種汚水に適用処理できる。また、炭酸ガス源と
して、ボイラ等の各種燃焼炉からの廃棄ガス等も活用す
ることが可能で、さらに１０気圧程度以下の加圧炭酸ガ
スを用いることで、より効果的に汚水の濾過と炭酸化が
行える。The calcium-containing sewage can be applied to various sewage containing calcium in a form of carbonation, such as sewage containing cement produced in a fresh concrete factory as a calcium source. Further, waste gas from various combustion furnaces such as a boiler can be used as a carbon dioxide gas source. Further, by using pressurized carbon dioxide gas of about 10 atm or less, it is possible to more effectively filter sewage and carbon dioxide. Can be converted.
【００１２】こうして処理された固化物は、数ｃｍ〜数
十ｃｍのブロック状で回収され、汚水中に含有する被炭
酸化カルシウム量によってその強度に差があるものの、
護岸ブロックの他、各種セメント、コンクリート製品と
同様の用途に活用することができる。一方、中和調整さ
れた水分１５は排出管７から放流することができる。The solidified product thus treated is collected in blocks of several cm to several tens of cm, and its strength varies depending on the amount of calcium carbonate contained in the wastewater,
In addition to revetment blocks, it can be used for the same applications as various cement and concrete products. On the other hand, the neutralized and adjusted water content 15 can be discharged from the discharge pipe 7.
【００１３】この発明のスラッジの処理装置１におい
て、カルシウムを含む汚水として生コンクリート工場等
で発生する固形分２０重量％のセメントスラッジを処理
して、３０ｃｍ厚さのブロック状固化体を回収したとこ
ろ、強度１５０ｋｇｆ／ｃｍ２で十分実用に耐えるもの
であった。In the sludge treating apparatus 1 of the present invention, cement sludge having a solid content of 20% by weight generated as sewage containing calcium in a raw concrete factory is treated to recover a block solidified body having a thickness of 30 cm. The strength of 150 kgf / cm 2 was sufficient for practical use.
【００１１４】[00114]
【発明の効果】以上説明したように、この発明は、極め
て簡単な方法及び装置により、セメントスラッジ等カル
シウム分を含む汚水を処理することができ、汚水中の固
形分分離と濾液の中和を同時に行い、しかも分離した固
形分を有用なブロックとして回収することができるもの
である。As described above, according to the present invention, wastewater containing calcium components such as cement sludge can be treated by a very simple method and apparatus, and solid components in wastewater can be separated and the filtrate can be neutralized. It is possible to carry out at the same time and collect the separated solid content as a useful block.
【図１】この発明の実施例を示す概略図である。FIG. 1 is a schematic view showing an embodiment of the present invention.
１ スラッジの処理装置 ２ 濾床 ３ 本体 ４ カルシウムを含む汚水の供給手段 ５ 炭酸ガス若しくは炭酸水の供給手段 ６ 循環路 ７ 排出管 ８ 上部室 ９ 下部室 １０ ポンプ手段 １４ 固形分 １５ 水分 1 Sludge Treatment Device 2 Filter Bed 3 Main Body 4 Means for Supplying Waste Water Containing Calcium 5 Means for Supplying Carbon Dioxide or Carbonated Water 6 Circulation Path 7 Discharge Pipe 8 Upper Chamber 9 Lower Chamber 10 Pump Means 14 Solids 15 Moisture
Claims (2)
濾過物に炭酸ガス若しくは炭酸水を作用させることを特
徴とするスラッジの処理方法。1. A method for treating sludge, which comprises filtering wastewater containing calcium and allowing carbon dioxide or carbonated water to act on the filtered material.
含む汚水の供給手段と炭酸ガス若しくは炭酸水の供給手
段を設けると共に、本体内下方と前記炭酸ガス若しくは
炭酸水の供給手段と連通する循環路を備えることを特徴
とするスラッジの処理装置。2. A circulation means for providing a means for supplying sewage containing calcium and a means for supplying carbon dioxide gas or carbonated water above the inside of the main body having a filter bed, and communicating with the inside of the main body and the means for supplying carbon dioxide gas or carbonated water. An apparatus for treating sludge, characterized by being provided with a passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22400593A JP3311436B2 (en) | 1993-07-16 | 1993-07-16 | Sludge treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22400593A JP3311436B2 (en) | 1993-07-16 | 1993-07-16 | Sludge treatment equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0731985A true JPH0731985A (en) | 1995-02-03 |
| JP3311436B2 JP3311436B2 (en) | 2002-08-05 |
Family
ID=16807104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22400593A Expired - Fee Related JP3311436B2 (en) | 1993-07-16 | 1993-07-16 | Sludge treatment equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3311436B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2464141A (en) * | 2008-10-06 | 2010-04-07 | Siltbuster Ltd | Apparatus and method for treating alkaline water |
| CN109289318A (en) * | 2018-10-30 | 2019-02-01 | 贵州兴贵环保工程有限公司 | Water quality silt multistage filtering separator |
| JP2021074672A (en) * | 2019-11-08 | 2021-05-20 | 鈴木 孝行 | Neutral recycled soil production system and neutral recycled soil production method using carbon dioxide fixation technology |
| WO2023190372A1 (en) * | 2022-03-28 | 2023-10-05 | 日本コンクリート工業株式会社 | Carbon dioxide fixation apparatus and carbon dioxide fixation method |
| JP2023143644A (en) * | 2022-03-24 | 2023-10-06 | 鹿島建設株式会社 | CO2 fixation system and CO2 fixation method |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4892520B2 (en) * | 2008-05-26 | 2012-03-07 | 日本コンクリート工業株式会社 | Concrete sludge treatment equipment |
| US10927042B2 (en) | 2013-06-25 | 2021-02-23 | Carboncure Technologies, Inc. | Methods and compositions for concrete production |
| US9376345B2 (en) | 2013-06-25 | 2016-06-28 | Carboncure Technologies Inc. | Methods for delivery of carbon dioxide to a flowable concrete mix |
| US9388072B2 (en) | 2013-06-25 | 2016-07-12 | Carboncure Technologies Inc. | Methods and compositions for concrete production |
| WO2015154174A1 (en) | 2014-04-07 | 2015-10-15 | Carboncure Technologies, Inc. | Integrated carbon dioxide capture |
| AU2017249444B2 (en) | 2016-04-11 | 2022-08-18 | Carboncure Technologies Inc. | Methods and compositions for treatment of concrete wash water |
| SG11201912759RA (en) | 2017-06-20 | 2020-01-30 | Carboncure Tech Inc | Methods and compositions for treatment of concrete wash water |
| CA3138622A1 (en) | 2019-04-26 | 2020-10-29 | Carboncure Technologies Inc. | Carbonation of concrete aggregates |
| US12521908B2 (en) | 2020-06-12 | 2026-01-13 | Carboncure Technologies Inc. | Methods and compositions for delivery of carbon dioxide |
-
1993
- 1993-07-16 JP JP22400593A patent/JP3311436B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2464141A (en) * | 2008-10-06 | 2010-04-07 | Siltbuster Ltd | Apparatus and method for treating alkaline water |
| GB2464141B (en) * | 2008-10-06 | 2013-06-26 | Siltbuster Ltd | Portable apparatus and method for treatment of alkaline water reaction with carbon dioxide |
| CN109289318A (en) * | 2018-10-30 | 2019-02-01 | 贵州兴贵环保工程有限公司 | Water quality silt multistage filtering separator |
| JP2021074672A (en) * | 2019-11-08 | 2021-05-20 | 鈴木 孝行 | Neutral recycled soil production system and neutral recycled soil production method using carbon dioxide fixation technology |
| JP2023143644A (en) * | 2022-03-24 | 2023-10-06 | 鹿島建設株式会社 | CO2 fixation system and CO2 fixation method |
| WO2023190372A1 (en) * | 2022-03-28 | 2023-10-05 | 日本コンクリート工業株式会社 | Carbon dioxide fixation apparatus and carbon dioxide fixation method |
| JPWO2023190372A1 (en) * | 2022-03-28 | 2023-10-05 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3311436B2 (en) | 2002-08-05 |
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