JPH02227198A - Treatment of sludge - Google Patents
Treatment of sludgeInfo
- Publication number
- JPH02227198A JPH02227198A JP18008289A JP18008289A JPH02227198A JP H02227198 A JPH02227198 A JP H02227198A JP 18008289 A JP18008289 A JP 18008289A JP 18008289 A JP18008289 A JP 18008289A JP H02227198 A JPH02227198 A JP H02227198A
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- calcium silicate
- silicate hydrate
- porous calcium
- particulate material
- 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 abstract description 66
- 239000000378 calcium silicate Substances 0.000 claims abstract description 36
- 229910052918 calcium silicate Inorganic materials 0.000 claims abstract description 36
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000000034 method Methods 0.000 claims abstract description 18
- 239000000843 powder Substances 0.000 claims description 25
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 7
- 238000002156 mixing Methods 0.000 abstract description 5
- 239000002994 raw material Substances 0.000 abstract description 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 abstract description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 abstract description 2
- 235000011941 Tilia x europaea Nutrition 0.000 abstract description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 abstract description 2
- 239000000292 calcium oxide Substances 0.000 abstract description 2
- 239000004568 cement Substances 0.000 abstract description 2
- 239000004571 lime Substances 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract description 2
- 239000000377 silicon dioxide Substances 0.000 abstract description 2
- 239000011236 particulate material Substances 0.000 abstract 4
- 239000011800 void material Substances 0.000 abstract 2
- 230000032683 aging Effects 0.000 abstract 1
- 230000001546 nitrifying effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 9
- 239000008187 granular material Substances 0.000 description 8
- 244000005700 microbiome Species 0.000 description 8
- 239000005416 organic matter Substances 0.000 description 7
- 150000003018 phosphorus compounds Chemical class 0.000 description 7
- 230000007423 decrease Effects 0.000 description 6
- 230000029087 digestion Effects 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- 239000013535 sea water Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 239000010842 industrial wastewater Substances 0.000 description 3
- 230000000813 microbial effect Effects 0.000 description 3
- 239000010801 sewage sludge Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Chemical compound CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- MKTRXTLKNXLULX-UHFFFAOYSA-P pentacalcium;dioxido(oxo)silane;hydron;tetrahydrate Chemical compound [H+].[H+].O.O.O.O.[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O MKTRXTLKNXLULX-UHFFFAOYSA-P 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000192700 Cyanobacteria Species 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- UGGQKDBXXFIWJD-UHFFFAOYSA-N calcium;dihydroxy(oxo)silane;hydrate Chemical compound O.[Ca].O[Si](O)=O UGGQKDBXXFIWJD-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000010840 domestic wastewater Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 125000005842 heteroatom Chemical group 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910017464 nitrogen compound Inorganic materials 0.000 description 1
- 150000002830 nitrogen compounds Chemical class 0.000 description 1
- 125000001477 organic nitrogen group Chemical group 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000003828 vacuum filtration Methods 0.000 description 1
Landscapes
- Treatment Of Sludge (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、家庭廃水汚泥、工業廃水汚泥、下水汚泥、そ
してこれらが川や海に処分されて川底や海底に蓄積され
たヘドロ等の汚泥を処理する方法に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to household wastewater sludge, industrial wastewater sludge, sewage sludge, and sludge such as sludge accumulated on riverbeds and seabeds when these are disposed of in rivers and the sea. Regarding how to process.
［従来の技術及び発明が解決しようとする課題］従来に
おける家庭廃水汚泥鷹工業廃水汚泥、下水汚泥等の汚泥
の処理方法としては、消化及び脱水が一般的である。[Prior Art and Problems to be Solved by the Invention] Digestion and dewatering are conventional methods for treating sludge such as household wastewater sludge, industrial wastewater sludge, and sewage sludge.
この消化は消化槽に汚泥を入れて撹拌し、同汚泥に含ま
れる微生物により汚泥中の有機物を分解させて消化させ
るとともに、この消化汚泥を取り出した分だけ新汚泥を
追加して連続的に行うのが一般的である。また、脱水は
前記消化汚泥又は未消化汚泥の含水率を減じるためのも
ので、太陽熱を利用した乾燥と真空ヂ過とが一般的であ
る。This digestion is carried out continuously by putting sludge into a digestion tank and stirring it, allowing the microorganisms contained in the sludge to decompose and digest the organic matter in the sludge, and adding new sludge in proportion to the amount of digested sludge taken out. is common. Further, dehydration is to reduce the water content of the digested sludge or undigested sludge, and drying using solar heat and vacuum filtration are generally used.
この消化及び脱水による処理方法は、有機物の除去には
かなり有効であるが、ＰＨを微生物の活動に適した微ア
ルカリ性に維持するのが難しい、ＮＨ４−Ｎ （７’／
−Ｅ：二７Ｎ１Ｊ窒素）からＮｏ３−Ｎ（硝酸態窒素）
への硝化率が低い、汚泥がリン化合物を含む場合にはそ
のリン化合物の除去率が低い等の問題があった。また、
同処理方法は、川底や海底に蓄積されたヘドロのように
王が真人で地上に取り出すことも難しい汚泥に対しては
適用が困難であった。This treatment method by digestion and dehydration is quite effective in removing organic matter, but it is difficult to maintain the pH at a slightly alkaline level suitable for microbial activity.NH4-N (7'/
-E: 27N1J nitrogen) to No3-N (nitrate nitrogen)
There have been problems such as a low nitrification rate and, if the sludge contains phosphorus compounds, a low removal rate of the phosphorus compounds. Also,
This treatment method was difficult to apply to sludge that is difficult to remove from the ground, such as sludge that accumulates on riverbeds and seabeds.
このヘドロは底生生物の減少や赤潮（貧酸素氷魂）発生
の原因となるため、従来より上記以外の処理方法が種々
考えられてきたが、実用的かつ効果的な方法は見当らな
かった。最近では、海底のヘドロの上に新しい砂を撒い
て同ヘドロを覆うことにより、底質の改善、底生生物の
回復等を図ろうとする拭取が愛知県知多郡美浜町の河和
港沖で行われており、注目を集めている（例えば、昭和
６３年５月２５日発行の朝日新聞の記事）。Since this sludge causes a decrease in benthic organisms and the occurrence of red tide (oxygen-deficient ice souls), various treatment methods other than those described above have been considered, but no practical and effective method has been found. Recently, a wiping operation has been carried out off the coast of Kowa Port in Mihama Town, Chita District, Aichi Prefecture, in an attempt to improve the bottom sediment and restore benthic organisms by spreading new sand on top of the sludge on the ocean floor to cover it. It has been carried out and is attracting attention (for example, an article in the Asahi Shimbun published on May 25, 1988).
本発明は、非常に簡単な作業で処理を行うことができる
ばかりでなく、汚泥のｐＨを微アルカリ性に容易に維持
することができ、有機物の除去率及びＮＨ４・−Ｎの硝
化率が高く、汚泥がリン化合物を含む場合にはその除去
率も高い新規な汚泥の処理方法を提供することにある。The present invention not only allows processing to be carried out with very simple operations, but also allows the pH of sludge to be easily maintained at a slightly alkaline level, and has a high organic matter removal rate and a high NH4・-N nitrification rate. It is an object of the present invention to provide a new method for treating sludge that has a high removal rate when the sludge contains phosphorus compounds.
［課題を解決するための手段］
本発明者らは、上記目的を達成するために種々検討を重
ねた結果、汚泥に多孔質珪酸カルシウム水和物粉粒体を
接触させることにより、上記の諸課題を解決することが
できることを知見し、本発明を完成した。[Means for Solving the Problems] As a result of various studies to achieve the above-mentioned objects, the present inventors have found that the above-mentioned problems can be achieved by bringing porous calcium silicate hydrate powder into contact with sludge. They discovered that the problem could be solved and completed the present invention.
すなわち、本発明の汚泥の処理方法は、汚泥に５０〜９
０％の空隙率を有する多孔質珪酸カルシウム水和物粉粒
体を接触させることを特徴とする。That is, in the sludge treatment method of the present invention, the sludge contains 50 to 9
The method is characterized in that it is brought into contact with porous calcium silicate hydrate powder having a porosity of 0%.
以下、本発明の構成を詳述する。Hereinafter, the configuration of the present invention will be explained in detail.
（多孔質珪酸カルシウム水和物粉粒体）本発明に使用す
る多孔質珪酸カルシウム水和物粉粒体としては、例えば
シリカのような珪酸質原料と石灰セメントのような酸化
カルシウム質原料とを、公知の方法で混合、硬化、高圧
高温水蒸気養生してなる無機多孔質の人口鉱物を挙げる
ことができる。具体的成分としては、トバモライト、ゾ
ノトライト、Ｃ−３−Ｈゲル、フオシャジャイト、ジャ
イロライト又はヒレブタンダイトの群から選ばれる１種
又は２種以上を主成分とするものを挙げることができる
。ただし、８１０２分とＣａ０分との構成比率や、他の
微量成分の如何には限定されない。(Porous calcium silicate hydrate powder) The porous calcium silicate hydrate powder used in the present invention includes, for example, a silicate raw material such as silica and a calcium oxide raw material such as lime cement. Examples include inorganic porous artificial minerals obtained by mixing, curing, and curing in high-pressure, high-temperature steam using known methods. Specific components include those whose main component is one or more selected from the group of tobermorite, xonotlite, C-3-H gel, phoshagite, gyrolite, and helebutandite. However, it is not limited to the composition ratio of 8102 min and Ca0 min or other trace components.
上記多孔質珪酸カルシウム水和物粉粒体は、多数の微細
な空隙を５０〜９０％、好ましくは６０〜８０％の空隙
率で有した多孔質のものである。The above-mentioned porous calcium silicate hydrate powder is porous having a large number of fine voids with a porosity of 50 to 90%, preferably 60 to 80%.
この空隙率が５０％未満では比表面積が小さいために微
生物の固定が悪く、リン化合物の吸着率も低い一方、こ
の空隙率が９０％を越えると浮き上がりが生じ易くなる
からである。If this porosity is less than 50%, the specific surface area is small, which makes it difficult to immobilize microorganisms, and the adsorption rate of phosphorus compounds is also low, while if this porosity exceeds 90%, floating tends to occur.
また、上記多孔質珪酸カルシウム水和物粉粒体の粒径は
特に限定されないが、好ましくは１００μｍ〜５０ｍｍ
である。この粒径が１００μｍ未満では空隙率が減少し
て微生物の固定が悪くなり、粒径が５０ｍｍを越えると
汚泥と多孔質珪酸カルシウム水和物粉粒体との接触面積
が減少して浄化率も低下するからである。Further, the particle size of the porous calcium silicate hydrate powder is not particularly limited, but is preferably 100 μm to 50 mm.
It is. If the particle size is less than 100 μm, the porosity will decrease and microorganisms will not be immobilized, and if the particle size exceeds 50 mm, the contact area between the sludge and the porous calcium silicate hydrate powder will decrease and the purification rate will decrease. This is because it decreases.
また、上記多孔質珪酸カルシウム水和物扮粒体の混合割
合は、汚泥１００重量部に対して、多孔質珪酸カルシウ
ム水和物粉粒体０．５〜１００重量部が適当で、好まし
くは多孔質珪酸カルシウム水和物粉粒体２〜２０重量部
である。多孔質珪酸カルシウム水和物扮粒体が０．５重
量部未満だと次に述べる作用が弱くなる一方、１００重
量部を越えても同作用はさほど変わらないからである。The mixing ratio of the porous calcium silicate hydrate granules is preferably 0.5 to 100 parts by weight, preferably porous 2 to 20 parts by weight of pure calcium silicate hydrate powder. This is because if the amount of porous calcium silicate hydrate granules is less than 0.5 parts by weight, the effect described below will be weakened, whereas if it exceeds 100 parts by weight, the same effect will not change much.
（接触方法の例）
本発明に係る汚泥の処理方法は、汚泥に上記多孔質珪酸
カルシウム水和物粉粒体を接触させるというものである
が、ここで接触とは方法の如何を問わず接するようにす
ることをいい、例えば次のような方法が挙げられる。(Example of contact method) The sludge treatment method according to the present invention is to bring the porous calcium silicate hydrate powder into contact with sludge, but here, contact means contact regardless of the method. For example, the following methods may be mentioned.
■ 川底や海底に蓄積されたヘドロの上に上記多孔質珪
酸カルシウム水和物粉粒体を撒き、同ヘドロが多孔質珪
酸カルシウム水和物粉粒体、で覆われるようにして両者
を接触させること。■ Sprinkle the above-mentioned porous calcium silicate hydrate powder on the sludge accumulated on the riverbed or seabed, and bring the two into contact so that the sludge is covered with the porous calcium silicate hydrate powder. thing.
■ 川底や海底に蓄積されたヘドロの上に上記多孔質珪
酸カルシウム水和物粉粒体を撒き、さらにこれらを撹拌
することにより、同ヘドロ中に多孔質珪酸カルシウム水
和物粉粒体が入り込むようにして両者を接触させること
。■ By scattering the porous calcium silicate hydrate powder and granules on top of the sludge that has accumulated on riverbeds and seabeds and stirring them further, the porous calcium silicate hydrate powder and granules enter the sludge. to bring the two into contact in this way.
■ 家庭廃水汚泥、工業廃水汚泥、下水汚泥等の汚泥に
ついては、前述した公知の消化槽に汚泥を上記多孔質珪
酸カルシウム水和物粉粒体とともに入れ、これらを撹拌
することにより接触させたり、同汚泥に上記多孔質珪酸
カルシウム水和物粉粒体を撒いて接触・させた後に、消
化槽に入れたりすること。■ For sludge such as domestic wastewater sludge, industrial wastewater sludge, and sewage sludge, the sludge is put into the above-mentioned known digestion tank together with the above-mentioned porous calcium silicate hydrate powder, and these are brought into contact by stirring, The above-mentioned porous calcium silicate hydrate powder is sprinkled on the sludge, brought into contact with it, and then placed in a digestion tank.
上記のように、本発明に係る汚泥の処理方法は非常に簡
単な作業で処理を行うことができる。As described above, the sludge treatment method according to the present invention can be performed with very simple operations.
（作用）
本発明に係る汚泥の処理方法は、次のような作用を奏す
る。(Function) The sludge treatment method according to the present invention has the following effects.
（１）多孔質珪酸カルシウム水和物粉粒体は空隙率５０
％以上の多数の微細な空隙を有するため、接触させた汚
泥からの微生物の固定及び繁殖を容易にするとともに、
微生物の活動しやすい雰囲気をつくる。すなわち、多孔
質珪酸カルシウム水和物粉粒体は微生物の好適な担体と
して作用する。(1) Porous calcium silicate hydrate powder has a porosity of 50
% or more, it facilitates the fixation and propagation of microorganisms from the sludge that comes into contact with it.
Create an atmosphere conducive to microbial activity. That is, the porous calcium silicate hydrate powder acts as a suitable carrier for microorganisms.
（２）汚泥に含まれる有機物は、多孔質珪酸カルシウム
水和物粉粒体に担持された浄化活性の高い微生物により
迅速かつ確実に分解され、ＢＯＤ、ＣＯＤ、ＳＳ等が有
効に除去される。(2) The organic matter contained in the sludge is quickly and reliably decomposed by microorganisms with high purification activity supported on the porous calcium silicate hydrate powder, and BOD, COD, SS, etc. are effectively removed.
いま、上記有機物が分解されると乳酸、酪酸、酢酸等が
生成する。しかし、本発明においては多孔質珪酸カルシ
ウム水和物粉粒体がこれらの酸を中和してｐＨ緩衝し、
汚泥のｐＨを微生物の活動に適した微アルカリ性に維持
するため、微生物による有機物の分解能力は低下しない
。Now, when the above organic substances are decomposed, lactic acid, butyric acid, acetic acid, etc. are produced. However, in the present invention, porous calcium silicate hydrate powder neutralizes these acids and buffers the pH.
Since the pH of the sludge is maintained at a slightly alkaline level suitable for microbial activity, the ability of microorganisms to decompose organic matter does not decrease.
（３）汚泥に含まれる窒素化合物も、多孔質珪酸カルシ
ウム水和自動粒体に担持された浄化活性の高い微生物に
より効果的に酸化され、ＮＨ４−Ｎのルシウム水和物粉
粒体のｐＨＭ衝作用により、上記硝化はさらに促進され
る。(3) Nitrogen compounds contained in sludge are also effectively oxidized by microorganisms with high purification activity supported on porous calcium silicate hydrated automatic granules, and the pHM concentration of NH4-N lucium hydrate granules is This action further promotes the nitrification.
（４）汚泥にリン化合物が含まれる場合、同リン化合物
中のリン酸イオンは多孔質珪酸カルシウム水和物粉粒体
が有する多数の微細な空隙に効果的に吸着されるため、
同リン化合物も高い除去率で除去される。(4) When the sludge contains phosphorus compounds, the phosphate ions in the phosphorus compounds are effectively adsorbed into the many fine voids of the porous calcium silicate hydrate powder.
The phosphorus compounds are also removed at a high removal rate.
［実施例］
本実施例においては、海底のヘドロを海水とともに直径
５０ｃｍ、深さ６０ｃｍの容器にサンプリングし、同容
器底に沈澱した厚さ約１ｃｍのヘドロの上に、粒径０．
１〜３．０ｍｍのトバモライトを主たる構成物とする多
孔質珪酸カルシウム水和物粉粒体を撒き、同ヘドロ上を
厚さ約０．１Ｃｍの多孔質珪酸カルシウム水和物粉粒体
により覆った。多孔質珪酸カルシウム水和物粉粒体の混
合割合は、ヘドロ２ρに対して多孔質珪酸カルシウム水
和物粉粒体１００ｇである。[Example] In this example, sludge from the ocean floor was sampled together with seawater in a container with a diameter of 50 cm and a depth of 60 cm, and the sludge with a thickness of about 1 cm that had settled at the bottom of the container was placed on top of the sludge with a particle size of 0.5 cm.
Porous calcium silicate hydrate granules with a thickness of 1 to 3.0 mm mainly composed of tobermorite were spread, and the sludge was covered with porous calcium silicate hydrate granules with a thickness of about 0.1 cm. . The mixing ratio of the porous calcium silicate hydrate powder is 100 g of porous calcium silicate hydrate powder to 2 ρ of sludge.
この状態のまま水温２３〜２５℃で３０日処理した後、
海水とヘドロをサンプリングし、海水についてはｐＨ，
ＣＯＤ、ＮＨ４Ｎ、ＮＯ２Ｎ、Ｎｏ３−Ｎ、Ｔ−Ｐ （
全リン） をｍ定Ｌ、ヘトロについては有機性炭素と有
機性窒素を測定した。After being treated in this state for 30 days at a water temperature of 23 to 25 degrees Celsius,
Seawater and sludge were sampled, and the pH and pH of the seawater were measured.
COD, NH4N, NO2N, No3-N, T-P (
Total phosphorus) was measured in mL, and for hetero, organic carbon and organic nitrogen were measured.
また、比較例として、前記多孔質珪酸カルシウム水和物
粉粒体に代えて砂１００ｇを用いて同様の試験及び測定
を行った。各側における海水の測定結果を第１表に示し
、ヘドロの測定結果を第２表に示す。Furthermore, as a comparative example, similar tests and measurements were conducted using 100 g of sand instead of the porous calcium silicate hydrate powder. The seawater measurements on each side are shown in Table 1, and the sludge measurements are shown in Table 2.
第２表 ヘドロの測定結果
同表から明らかなように、本実施例によれば、海底のヘ
ドロ中の有機物除去、硝化及び脱リンが確実に行われて
いる。Table 2 Sludge Measurement Results As is clear from the table, according to this example, organic matter removal, nitrification, and dephosphorization from seafloor sludge are reliably performed.
本発明は前記の実施例に限定されることなく本発明の効
果を著しく損なうことのない限度で種々の態様で実施さ
れる。例えば、多孔質珪酸カルシウム水和物として特定
の用途に使用中のものを転用したり使用済みのものを再
利用することもできる。かかる用途としては土壌改良材
や水の浄化材がある。特に、前記水の浄化材に過酸化水
素を担持させてそれを赤潮やアオコの発生した水域環境
に散布して赤潮等を駆除した時使用した使用済みのもの
でもよい。この態様においては赤潮が発生する水域環境
であって、同時にその環境の底部に汚泥が存在する場合
、単に前記水域環境に過酸化水素が担持された多孔質珪
酸カルシウム水和物の粉粒体を特定量散布するだけで、
赤潮等の駆除と同時に汚泥の処理が可能になるという効
果を発揮する。The present invention is not limited to the above embodiments, but may be implemented in various forms without significantly impairing the effects of the present invention. For example, a porous calcium silicate hydrate that is currently in use for a specific purpose can be repurposed, or a used porous calcium silicate hydrate can be reused. Such uses include soil improvement materials and water purification materials. In particular, the water purifying material may be a used material that has been used to exterminate red tide and algal blooms by carrying hydrogen peroxide and spraying it on the water environment where red tide and blue-green algae have occurred. In this embodiment, when a red tide occurs in an aquatic environment and sludge is present at the bottom of the environment, the porous calcium silicate hydrate powder carrying hydrogen peroxide is simply added to the aquatic environment. Just by spraying a specific amount,
It has the effect of making it possible to exterminate red tide and treat sludge at the same time.
［発明の効果］
本発明に係る汚泥の処理方法は、上記の通り構成されて
いるので、非常に簡単な作業で処理を行うことができる
ばかりでなく、汚泥のｐＨを容易に微アルカリ性に維持
す乞ことができ、汚泥中の有機物除去、ＮＨ４−Ｎの硝
化、脱リンを確実に行うことができるという優れた効果
を奏する。[Effects of the Invention] Since the sludge treatment method according to the present invention is configured as described above, not only can the treatment be performed with very simple operations, but also the pH of the sludge can be easily maintained at a slightly alkaline level. It has the excellent effect of being able to reliably remove organic matter from sludge, nitrify NH4-N, and dephosphorize.
Claims (1)
ルシウム水和物粉粒体を接触させることを特徴とする汚
泥の処理方法。1. A method for treating sludge, which comprises contacting sludge with porous calcium silicate hydrate powder having a porosity of 50 to 90%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18008289A JPH0773717B2 (en) | 1988-11-05 | 1989-07-12 | Sludge treatment method |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27999688 | 1988-11-05 | ||
| JP63-279996 | 1988-11-05 | ||
| JP18008289A JPH0773717B2 (en) | 1988-11-05 | 1989-07-12 | Sludge treatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02227198A true JPH02227198A (en) | 1990-09-10 |
| JPH0773717B2 JPH0773717B2 (en) | 1995-08-09 |
Family
ID=26499731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18008289A Expired - Lifetime JPH0773717B2 (en) | 1988-11-05 | 1989-07-12 | Sludge treatment method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0773717B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07299500A (en) * | 1994-03-09 | 1995-11-14 | Ngk Insulators Ltd | Production of inorganic flocculant-mixed sludge and device therefor |
| JP2012005923A (en) * | 2010-06-22 | 2012-01-12 | Keiichiro Asaoka | Organic wastewater treatment apparatus |
| EP2576449B1 (en) * | 2010-06-01 | 2015-12-02 | Technische Universität Darmstadt | Method for producing a mixture for reducing the formation of magnesium ammonium phosphate (struvite) in clarification plants |
| JP2018051458A (en) * | 2016-09-28 | 2018-04-05 | 太平洋セメント株式会社 | Sediment improving material and sediment improving method |
-
1989
- 1989-07-12 JP JP18008289A patent/JPH0773717B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07299500A (en) * | 1994-03-09 | 1995-11-14 | Ngk Insulators Ltd | Production of inorganic flocculant-mixed sludge and device therefor |
| EP2576449B1 (en) * | 2010-06-01 | 2015-12-02 | Technische Universität Darmstadt | Method for producing a mixture for reducing the formation of magnesium ammonium phosphate (struvite) in clarification plants |
| JP2012005923A (en) * | 2010-06-22 | 2012-01-12 | Keiichiro Asaoka | Organic wastewater treatment apparatus |
| JP2018051458A (en) * | 2016-09-28 | 2018-04-05 | 太平洋セメント株式会社 | Sediment improving material and sediment improving method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0773717B2 (en) | 1995-08-09 |
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