JP2009268986A - 汚泥用防臭組成物 - Google Patents
汚泥用防臭組成物 Download PDFInfo
- Publication number
- JP2009268986A JP2009268986A JP2008122494A JP2008122494A JP2009268986A JP 2009268986 A JP2009268986 A JP 2009268986A JP 2008122494 A JP2008122494 A JP 2008122494A JP 2008122494 A JP2008122494 A JP 2008122494A JP 2009268986 A JP2009268986 A JP 2009268986A
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- Prior art keywords
- sludge
- acid
- composition
- sodium
- salt
- 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.)
- Pending
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- 239000010802 sludge Substances 0.000 title claims abstract description 48
- 239000000203 mixture Substances 0.000 title claims abstract description 34
- 230000001877 deodorizing effect Effects 0.000 title claims abstract description 16
- LVDKZNITIUWNER-UHFFFAOYSA-N Bronopol Chemical compound OCC(Br)(CO)[N+]([O-])=O LVDKZNITIUWNER-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000005260 corrosion Methods 0.000 claims abstract description 10
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 9
- 229910001963 alkali metal nitrate Inorganic materials 0.000 claims abstract description 8
- 230000007797 corrosion Effects 0.000 claims abstract description 8
- 239000003112 inhibitor Substances 0.000 claims abstract description 8
- 239000002781 deodorant agent Substances 0.000 claims description 25
- 239000003002 pH adjusting agent Substances 0.000 claims description 2
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 abstract description 16
- 150000001875 compounds Chemical class 0.000 abstract description 16
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract description 14
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 11
- 239000011593 sulfur Substances 0.000 abstract description 11
- 229910052717 sulfur Inorganic materials 0.000 abstract description 11
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 abstract description 8
- 229910000037 hydrogen sulfide Inorganic materials 0.000 abstract description 8
- 229910021529 ammonia Inorganic materials 0.000 abstract description 7
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 abstract description 6
- 235000019645 odor Nutrition 0.000 abstract description 6
- -1 nitrogen-containing compound Chemical class 0.000 description 34
- 235000002639 sodium chloride Nutrition 0.000 description 16
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 11
- 239000003205 fragrance Substances 0.000 description 9
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- 239000003242 anti bacterial agent Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
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- 239000000194 fatty acid Substances 0.000 description 5
- 229930195729 fatty acid Natural products 0.000 description 5
- 239000000796 flavoring agent Substances 0.000 description 5
- 235000019634 flavors Nutrition 0.000 description 5
- 150000002334 glycols Chemical class 0.000 description 5
- 239000004317 sodium nitrate Substances 0.000 description 5
- 235000010344 sodium nitrate Nutrition 0.000 description 5
- 239000004094 surface-active agent Substances 0.000 description 5
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- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000000341 volatile oil Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
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- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- 125000005843 halogen group Chemical group 0.000 description 3
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 150000007524 organic acids Chemical class 0.000 description 3
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 238000004065 wastewater treatment Methods 0.000 description 3
- XHXUANMFYXWVNG-ADEWGFFLSA-N (-)-Menthyl acetate Chemical compound CC(C)[C@@H]1CC[C@@H](C)C[C@H]1OC(C)=O XHXUANMFYXWVNG-ADEWGFFLSA-N 0.000 description 2
- KXSDPILWMGFJMM-AEJSXWLSSA-N (1s,4r,5r)-4-methyl-1-propan-2-ylbicyclo[3.1.0]hexan-4-ol Chemical compound C([C@]1(O)C)C[C@]2(C(C)C)[C@H]1C2 KXSDPILWMGFJMM-AEJSXWLSSA-N 0.000 description 2
- AKEUNCKRJATALU-UHFFFAOYSA-N 2,6-dihydroxybenzoic acid Chemical compound OC(=O)C1=C(O)C=CC=C1O AKEUNCKRJATALU-UHFFFAOYSA-N 0.000 description 2
- QCDWFXQBSFUVSP-UHFFFAOYSA-N 2-phenoxyethanol Chemical compound OCCOC1=CC=CC=C1 QCDWFXQBSFUVSP-UHFFFAOYSA-N 0.000 description 2
- WRMNZCZEMHIOCP-UHFFFAOYSA-N 2-phenylethanol Chemical compound OCCC1=CC=CC=C1 WRMNZCZEMHIOCP-UHFFFAOYSA-N 0.000 description 2
- OALYTRUKMRCXNH-UHFFFAOYSA-N 5-pentyloxolan-2-one Chemical compound CCCCCC1CCC(=O)O1 OALYTRUKMRCXNH-UHFFFAOYSA-N 0.000 description 2
- 239000005711 Benzoic acid Substances 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- FKUPPRZPSYCDRS-UHFFFAOYSA-N Cyclopentadecanolide Chemical compound O=C1CCCCCCCCCCCCCCO1 FKUPPRZPSYCDRS-UHFFFAOYSA-N 0.000 description 2
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- WEEGYLXZBRQIMU-UHFFFAOYSA-N Eucalyptol Chemical compound C1CC2CCC1(C)OC2(C)C WEEGYLXZBRQIMU-UHFFFAOYSA-N 0.000 description 2
- GLZPCOQZEFWAFX-UHFFFAOYSA-N Geraniol Chemical compound CC(C)=CCCC(C)=CCO GLZPCOQZEFWAFX-UHFFFAOYSA-N 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- 229910002651 NO3 Inorganic materials 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000002202 Polyethylene glycol Substances 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- KGEKLUUHTZCSIP-HOSYDEDBSA-N [(1s,4s,6r)-1,7,7-trimethyl-6-bicyclo[2.2.1]heptanyl] acetate Chemical compound C1C[C@]2(C)[C@H](OC(=O)C)C[C@H]1C2(C)C KGEKLUUHTZCSIP-HOSYDEDBSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- IGODOXYLBBXFDW-UHFFFAOYSA-N alpha-Terpinyl acetate Chemical compound CC(=O)OC(C)(C)C1CCC(C)=CC1 IGODOXYLBBXFDW-UHFFFAOYSA-N 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 150000003851 azoles Chemical class 0.000 description 2
- UJMDYLWCYJJYMO-UHFFFAOYSA-N benzene-1,2,3-tricarboxylic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1C(O)=O UJMDYLWCYJJYMO-UHFFFAOYSA-N 0.000 description 2
- QMKYBPDZANOJGF-UHFFFAOYSA-N benzene-1,3,5-tricarboxylic acid Chemical compound OC(=O)C1=CC(C(O)=O)=CC(C(O)=O)=C1 QMKYBPDZANOJGF-UHFFFAOYSA-N 0.000 description 2
- 235000010233 benzoic acid Nutrition 0.000 description 2
- IOJUPLGTWVMSFF-UHFFFAOYSA-N benzothiazole Chemical compound C1=CC=C2SC=NC2=C1 IOJUPLGTWVMSFF-UHFFFAOYSA-N 0.000 description 2
- QUKGYYKBILRGFE-UHFFFAOYSA-N benzyl acetate Chemical compound CC(=O)OCC1=CC=CC=C1 QUKGYYKBILRGFE-UHFFFAOYSA-N 0.000 description 2
- UAHWPYUMFXYFJY-UHFFFAOYSA-N beta-myrcene Chemical compound CC(C)=CCCC(=C)C=C UAHWPYUMFXYFJY-UHFFFAOYSA-N 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- ULDHMXUKGWMISQ-UHFFFAOYSA-N carvone Chemical compound CC(=C)C1CC=C(C)C(=O)C1 ULDHMXUKGWMISQ-UHFFFAOYSA-N 0.000 description 2
- JOZKFWLRHCDGJA-UHFFFAOYSA-N citronellol acetate Chemical compound CC(=O)OCCC(C)CCC=C(C)C JOZKFWLRHCDGJA-UHFFFAOYSA-N 0.000 description 2
- OSOIQJGOYGSIMF-UHFFFAOYSA-N cyclopentadecanone Chemical compound O=C1CCCCCCCCCCCCCC1 OSOIQJGOYGSIMF-UHFFFAOYSA-N 0.000 description 2
- KSMVZQYAVGTKIV-UHFFFAOYSA-N decanal Chemical compound CCCCCCCCCC=O KSMVZQYAVGTKIV-UHFFFAOYSA-N 0.000 description 2
- MHDVGSVTJDSBDK-UHFFFAOYSA-N dibenzyl ether Chemical compound C=1C=CC=CC=1COCC1=CC=CC=C1 MHDVGSVTJDSBDK-UHFFFAOYSA-N 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- LNTHITQWFMADLM-UHFFFAOYSA-N gallic acid Chemical compound OC(=O)C1=CC(O)=C(O)C(O)=C1 LNTHITQWFMADLM-UHFFFAOYSA-N 0.000 description 2
- HIGQPQRQIQDZMP-UHFFFAOYSA-N geranil acetate Natural products CC(C)=CCCC(C)=CCOC(C)=O HIGQPQRQIQDZMP-UHFFFAOYSA-N 0.000 description 2
- HIGQPQRQIQDZMP-DHZHZOJOSA-N geranyl acetate Chemical compound CC(C)=CCC\C(C)=C\COC(C)=O HIGQPQRQIQDZMP-DHZHZOJOSA-N 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- XMGQYMWWDOXHJM-UHFFFAOYSA-N limonene Chemical compound CC(=C)C1CCC(C)=CC1 XMGQYMWWDOXHJM-UHFFFAOYSA-N 0.000 description 2
- CDOSHBSSFJOMGT-UHFFFAOYSA-N linalool Chemical compound CC(C)=CCCC(C)(O)C=C CDOSHBSSFJOMGT-UHFFFAOYSA-N 0.000 description 2
- IIPYXGDZVMZOAP-UHFFFAOYSA-N lithium nitrate Chemical compound [Li+].[O-][N+]([O-])=O IIPYXGDZVMZOAP-UHFFFAOYSA-N 0.000 description 2
- GPSDUZXPYCFOSQ-UHFFFAOYSA-N m-toluic acid Chemical compound CC1=CC=CC(C(O)=O)=C1 GPSDUZXPYCFOSQ-UHFFFAOYSA-N 0.000 description 2
- 239000001525 mentha piperita l. herb oil Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
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- 150000002823 nitrates Chemical class 0.000 description 2
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- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
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- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 2
- QELSKZZBTMNZEB-UHFFFAOYSA-N propylparaben Chemical compound CCCOC(=O)C1=CC=C(O)C=C1 QELSKZZBTMNZEB-UHFFFAOYSA-N 0.000 description 2
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- WTARULDDTDQWMU-RKDXNWHRSA-N (+)-β-pinene Chemical compound C1[C@H]2C(C)(C)[C@@H]1CCC2=C WTARULDDTDQWMU-RKDXNWHRSA-N 0.000 description 1
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- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical class [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 1
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- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical compound CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 description 1
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- 229960003500 triclosan Drugs 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical class [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- CCUJQAYWGVMIMO-UHFFFAOYSA-K trisodium;3-carboxy-6-hydroxy-6-oxo-3-phosphonatohexanoate Chemical compound [Na+].[Na+].[Na+].[O-]C(=O)CC(C([O-])=O)(P(O)(=O)O)CCC([O-])=O CCUJQAYWGVMIMO-UHFFFAOYSA-K 0.000 description 1
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- MWOOGOJBHIARFG-UHFFFAOYSA-N vanillin Chemical compound COC1=CC(C=O)=CC=C1O MWOOGOJBHIARFG-UHFFFAOYSA-N 0.000 description 1
- FGQOOHJZONJGDT-UHFFFAOYSA-N vanillin Natural products COC1=CC(O)=CC(C=O)=C1 FGQOOHJZONJGDT-UHFFFAOYSA-N 0.000 description 1
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- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229930007850 β-damascenone Natural products 0.000 description 1
Landscapes
- Treatment Of Sludge (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
【解決手段】2−ブロモ−2−ニトロ−1,3−プロパンジオール及び硝酸アルカリ金属塩を含有することを特徴とする汚泥用防臭組成物である。腐食防止剤、pH調節剤、凍結防止剤などをさらに含有していてもよい。
【選択図】 なし
Description
ハロニトロアルカノール化合物については、例えば、当該化合物とオマジン及び/又はその金属誘導体とからなる廃水処理終了後の処理物用脱臭剤(特許文献1)、当該化合物とリン酸などの腐食防止剤とを含有する汚泥用防臭組成物(特許文献2)などが知られている。
また、亜硝酸塩又は硝酸塩については、例えば、亜硝酸塩単独又はピリチオン塩を含有する脱臭剤(特許文献3)、亜硝酸塩と2,2’−ジチオビス−ピリジン−1,1’−ジオキシドなどの腐敗防止剤を含有する脱臭剤(特許文献4)、亜硝酸塩又は硝酸塩と防菌剤(さらに酸化剤)とを含有する脱臭剤(特許文献5、特許文献6)などが知られている。
これらのうち、特許文献5,6では、防菌剤として2−ブロモ−2−ニトロ−1,3−プロパンジオールが例示されているが、硝酸塩との組合せ例は示されていない。
本発明の課題は、汚泥から発生するアンモニア等の含窒素化合物、硫化水素、メチルメルカプタン等の含硫黄化合物などの悪臭に対する防臭能力に優れた汚泥用防臭組成物を提供することにある。
その効果は、実施例に示すとおり、特に含硫黄化合物の防臭効果において、2−ブロモ−2−ニトロ−1,3−プロパンジオールと硝酸アルカリ金属塩との相乗効果を示す。
即ち、たとえば硝酸ナトリウム塩は含硫黄化合物の防臭効果がほとんどないにもかかわらず(比較例2)、2−ブロモ−2−ニトロ−1,3−プロパンジオールと併用することにより(実施例1〜3)、硝酸ナトリウム塩を使用しない比較例1のものに比して含硫黄化合物の防臭効果が向上する。
本発明の汚泥用防臭組成物に用いる2−ブロモ−2−ニトロ−1,3−プロパンジオールは、公知の化合物であり、市販されている。
本発明の汚泥用防臭組成物に用いる硝酸アルカリ金属塩は、硝酸ナトリウム、硝酸カリウム、硝酸リチウムなどである。
本発明の汚泥用防臭組成物における使用割合は、2−ブロモ−2−ニトロ−1,3−プロパンジオールが0.1〜30質量%、好ましくは、1〜25質量%、より好ましくは、5〜20質量%、硝酸アルカリ金属塩が5〜50質量%、好ましくは5〜20質量%、より好ましくは、5〜15質量%、である。
本発明の汚泥用防臭組成物は、その他の成分として、腐食防止剤、pH調節剤、凍結防止剤などを含有することができる。
腐蝕防止剤としては、鉄系金属に対して腐蝕防止効果を有するものであれば特に制限されないが、例えば、有機酸及びその塩、リン酸及びリン酸誘導体並びにそれらの塩、アゾール化合物等を例示することができ、これらは1種又は2種以上を併用することができる。
本発明の汚泥用防臭組成物に用いられる上記腐蝕防止剤の配合割合は、0.1〜40質量%、好ましくは1〜30質量%、より好ましくは5〜25質量%である。
液状とする場合、使用する溶媒としては活性ハロゲン原子を有する抗菌剤及び腐蝕防止剤を分散・溶解できる溶媒であればいずれのものも使用することができ、水;メタノール、エタノール、プロパノール等のアルコール類;エチレングリコール、プロピレングリコール、ポリエチレングリコール、ジエチレングリコール、エチレングリコールモノメチルエーテル、エチレングリコールモノエチルエーテル、ジエチレングリコールモノメチルエーテル、ジエチレングリコールモノブチルエーテル等のグリコール類;ジメチルスルホキシド、ジメチルホルムアミド、エチレングリコールジアセート、ジエチレングリコールモノエチルエーテルアセテート、イソプロピルエーテル、塩化メチレン等を使用することができ、これらは1種又は2種以上を併用することができる。これらの中でも安全面から水を使用するのが好ましい。
アルコール類又はグリコール類を使用する場合の配合割合は、通常0.5〜25質量%、好ましくは1〜15質量%、より好ましくは2〜10質量%である。
かかる界面活性剤の配合割合は、100重量部に対して、0.1重量部〜30重量部であるのが好ましく、0.5重量部〜20重量部であるのがより好ましい。
防臭対象である汚泥としては、廃水処理終了後の水分含有量が高い処理物であってもよいし、水分を濃縮した濃縮汚泥や脱水ケーキであってもよい。また、本発明の防臭組成物は、濃縮汚泥等の比較的水分含有量の少ない汚泥においても、攪拌等の操作を行わなくても、添加するだけで防臭効果を有するため、汚泥の処理工程を簡略化できる点で好ましい。
本発明の汚泥用防臭組成物を汚泥に使用する場合は、前記組成物として汚泥に添加してもよいが、2−ブロモ−2−ニトロ−1,3−プロパンジオールと硝酸アルカリ金属塩を別々に汚泥に添加してもよい。
本発明の汚泥用防臭組成物の汚泥に対する使用量は、通常1〜10質量%、好ましくは2〜5質量%である。
表に示す成分化合物を表に示す配合割合で混合し液状防臭組成物(実施例1〜3)を調製した。
また、比較例として、硝酸ナトリウムを配合しない場合(比較例1)と硝酸ナトリウムのみの場合(比較例2)を行った、
1)1Lポリカップに、排水処理場から採取した脱水直後の脱水ケーキ200gを入れ、実施例1〜3の防臭剤、比較例1及び2の防臭剤を夫々、1%(2g)、2%(4g)、3%(6g)、5%(10g)となるよう滴下し、スパチラでよく混合した。
2)防臭剤を添加した脱水ケーキを555ml円筒型ポリ容器に移し、容器容量の約半分になるように脱水ケーキを押し、蓋をした。
3)25〜30℃で保管し、3日後、及び、6日経過後に、夫々、円筒型ポリ容器をポリエチレン製の袋に入れた後、円筒型ポリ容器の蓋をあけ、エアーポンプを使用して、ポリエチレン製の袋内に空気5Lを入れた。
4)2分間放置後、NH3、R−NH2、H2S、CH3SH濃度をガステック社製検知管を使用して測定した。
3日後及び6日後の測定結果を以下の表に示す。
Claims (5)
- 2−ブロモ−2−ニトロ−1,3−プロパンジオール及び硝酸アルカリ金属塩を含有することを特徴とする汚泥用防臭組成物。
- 2−ブロモ−2−ニトロ−1,3−プロパンジオールを5〜20質量%、硝酸アルカリ金属塩を5〜15質量%含有することを特徴とする請求項1記載の汚泥用防臭組成物。
- 腐食防止剤をさらに含有することを特徴とする請求項1又は2記載の汚泥用防臭組成物。
- pH調節剤をさらに含有することを特徴とする請求項1〜3のいずれかに記載の汚泥用防臭組成物。
- 凍結防止剤をさらに含有することを特徴とする請求項1〜4のいずれかに記載の汚泥用防臭組成物。
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015085293A (ja) * | 2013-11-01 | 2015-05-07 | 日鉄住金環境株式会社 | 臭気発生物質の臭気抑制方法及び臭気抑制用組成物 |
| JP2015085292A (ja) * | 2013-11-01 | 2015-05-07 | 日鉄住金環境株式会社 | 臭気発生物質の臭気抑制方法及び臭気抑制用組成物 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001300545A (ja) * | 2000-04-18 | 2001-10-30 | Mitsubishi Gas Chem Co Inc | 消臭方法 |
| JP2006061904A (ja) * | 2004-07-28 | 2006-03-09 | Nippon Soda Co Ltd | 汚泥用防臭組成物 |
| JP2006061684A (ja) * | 2004-07-28 | 2006-03-09 | Nippon Soda Co Ltd | し尿用防臭組成物 |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001300545A (ja) * | 2000-04-18 | 2001-10-30 | Mitsubishi Gas Chem Co Inc | 消臭方法 |
| JP2006061904A (ja) * | 2004-07-28 | 2006-03-09 | Nippon Soda Co Ltd | 汚泥用防臭組成物 |
| JP2006061684A (ja) * | 2004-07-28 | 2006-03-09 | Nippon Soda Co Ltd | し尿用防臭組成物 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015085293A (ja) * | 2013-11-01 | 2015-05-07 | 日鉄住金環境株式会社 | 臭気発生物質の臭気抑制方法及び臭気抑制用組成物 |
| JP2015085292A (ja) * | 2013-11-01 | 2015-05-07 | 日鉄住金環境株式会社 | 臭気発生物質の臭気抑制方法及び臭気抑制用組成物 |
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