CN107459249A - A kind of curing of river silt - Google Patents
A kind of curing of river silt Download PDFInfo
- Publication number
- CN107459249A CN107459249A CN201710747968.4A CN201710747968A CN107459249A CN 107459249 A CN107459249 A CN 107459249A CN 201710747968 A CN201710747968 A CN 201710747968A CN 107459249 A CN107459249 A CN 107459249A
- Authority
- CN
- China
- Prior art keywords
- curing
- monomer
- mud
- river silt
- sludge
- 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
- 239000011347 resin Substances 0.000 claims abstract description 84
- 229920005989 resin Polymers 0.000 claims abstract description 84
- 239000010802 sludge Substances 0.000 claims abstract description 78
- 239000002994 raw material Substances 0.000 claims abstract description 50
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- 238000007711 solidification Methods 0.000 claims abstract description 30
- 230000008023 solidification Effects 0.000 claims abstract description 30
- 239000004568 cement Substances 0.000 claims abstract description 20
- 239000010881 fly ash Substances 0.000 claims abstract description 19
- 239000000292 calcium oxide Substances 0.000 claims abstract description 17
- 235000012255 calcium oxide Nutrition 0.000 claims abstract description 17
- 239000000178 monomer Substances 0.000 claims description 110
- 239000003999 initiator Substances 0.000 claims description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
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- 239000012530 fluid Substances 0.000 claims description 24
- 229910052809 inorganic oxide Inorganic materials 0.000 claims description 24
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- 239000007822 coupling agent Substances 0.000 claims description 22
- 239000003431 cross linking reagent Substances 0.000 claims description 22
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- 239000004094 surface-active agent Substances 0.000 claims description 22
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 20
- 239000000872 buffer Substances 0.000 claims description 18
- 238000006243 chemical reaction Methods 0.000 claims description 17
- 125000004836 hexamethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 claims description 16
- 239000002904 solvent Substances 0.000 claims description 16
- 238000010792 warming Methods 0.000 claims description 16
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- 238000007334 copolymerization reaction Methods 0.000 claims description 10
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 claims description 9
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 claims description 9
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- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Natural products C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 8
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 8
- 238000004945 emulsification Methods 0.000 claims description 8
- 238000007720 emulsion polymerization reaction Methods 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 8
- 125000005395 methacrylic acid group Chemical group 0.000 claims description 7
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 claims description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 6
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims description 6
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 claims description 6
- 125000003011 styrenyl group Chemical group [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 claims description 6
- 239000004408 titanium dioxide Substances 0.000 claims description 6
- DXPPIEDUBFUSEZ-UHFFFAOYSA-N 6-methylheptyl prop-2-enoate Chemical group CC(C)CCCCCOC(=O)C=C DXPPIEDUBFUSEZ-UHFFFAOYSA-N 0.000 claims description 5
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- -1 dimethylamino-propyl Chemical group 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 238000007781 pre-processing Methods 0.000 claims description 4
- LYBIZMNPXTXVMV-UHFFFAOYSA-N propan-2-yl prop-2-enoate Chemical compound CC(C)OC(=O)C=C LYBIZMNPXTXVMV-UHFFFAOYSA-N 0.000 claims description 4
- SIQZJFKTROUNPI-UHFFFAOYSA-N 1-(hydroxymethyl)-5,5-dimethylhydantoin Chemical compound CC1(C)N(CO)C(=O)NC1=O SIQZJFKTROUNPI-UHFFFAOYSA-N 0.000 claims description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 3
- RSNDTPFSMDVWCS-UHFFFAOYSA-N 2-(butoxymethyl)prop-2-enamide Chemical compound CCCCOCC(=C)C(N)=O RSNDTPFSMDVWCS-UHFFFAOYSA-N 0.000 claims description 3
- CCJAYIGMMRQRAO-UHFFFAOYSA-N 2-[4-[(2-hydroxyphenyl)methylideneamino]butyliminomethyl]phenol Chemical compound OC1=CC=CC=C1C=NCCCCN=CC1=CC=CC=C1O CCJAYIGMMRQRAO-UHFFFAOYSA-N 0.000 claims description 3
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 claims description 3
- AGBXYHCHUYARJY-UHFFFAOYSA-N 2-phenylethenesulfonic acid Chemical compound OS(=O)(=O)C=CC1=CC=CC=C1 AGBXYHCHUYARJY-UHFFFAOYSA-N 0.000 claims description 3
- QZPSOSOOLFHYRR-UHFFFAOYSA-N 3-hydroxypropyl prop-2-enoate Chemical compound OCCCOC(=O)C=C QZPSOSOOLFHYRR-UHFFFAOYSA-N 0.000 claims description 3
- SBVKVAIECGDBTC-UHFFFAOYSA-N 4-hydroxy-2-methylidenebutanamide Chemical compound NC(=O)C(=C)CCO SBVKVAIECGDBTC-UHFFFAOYSA-N 0.000 claims description 3
- GHUXAYLZEGLXDA-UHFFFAOYSA-N 8-azido-5-ethyl-6-phenylphenanthridin-5-ium-3-amine;bromide Chemical compound [Br-].C12=CC(N=[N+]=[N-])=CC=C2C2=CC=C(N)C=C2[N+](CC)=C1C1=CC=CC=C1 GHUXAYLZEGLXDA-UHFFFAOYSA-N 0.000 claims description 3
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 3
- QPLDLSVMHZLSFG-UHFFFAOYSA-N CuO Inorganic materials [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 3
- 229920001651 Cyanoacrylate Polymers 0.000 claims description 3
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 3
- MWCLLHOVUTZFKS-UHFFFAOYSA-N Methyl cyanoacrylate Chemical compound COC(=O)C(=C)C#N MWCLLHOVUTZFKS-UHFFFAOYSA-N 0.000 claims description 3
- GYCMBHHDWRMZGG-UHFFFAOYSA-N Methylacrylonitrile Chemical compound CC(=C)C#N GYCMBHHDWRMZGG-UHFFFAOYSA-N 0.000 claims description 3
- OKKRPWIIYQTPQF-UHFFFAOYSA-N Trimethylolpropane trimethacrylate Chemical compound CC(=C)C(=O)OCC(CC)(COC(=O)C(C)=C)COC(=O)C(C)=C OKKRPWIIYQTPQF-UHFFFAOYSA-N 0.000 claims description 3
- LDHQCZJRKDOVOX-NSCUHMNNSA-N crotonic acid Chemical compound C\C=C\C(O)=O LDHQCZJRKDOVOX-NSCUHMNNSA-N 0.000 claims description 3
- 229960004643 cupric oxide Drugs 0.000 claims description 3
- KBLWLMPSVYBVDK-UHFFFAOYSA-N cyclohexyl prop-2-enoate Chemical class C=CC(=O)OC1CCCCC1 KBLWLMPSVYBVDK-UHFFFAOYSA-N 0.000 claims description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 3
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 3
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 3
- 150000004702 methyl esters Chemical class 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 3
- BOQSSGDQNWEFSX-UHFFFAOYSA-N propan-2-yl 2-methylprop-2-enoate Chemical compound CC(C)OC(=O)C(C)=C BOQSSGDQNWEFSX-UHFFFAOYSA-N 0.000 claims description 3
- NHARPDSAXCBDDR-UHFFFAOYSA-N propyl 2-methylprop-2-enoate Chemical compound CCCOC(=O)C(C)=C NHARPDSAXCBDDR-UHFFFAOYSA-N 0.000 claims description 3
- PNXMTCDJUBJHQJ-UHFFFAOYSA-N propyl prop-2-enoate Chemical compound CCCOC(=O)C=C PNXMTCDJUBJHQJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- ISXSCDLOGDJUNJ-UHFFFAOYSA-N tert-butyl prop-2-enoate Chemical compound CC(C)(C)OC(=O)C=C ISXSCDLOGDJUNJ-UHFFFAOYSA-N 0.000 claims description 3
- LDHQCZJRKDOVOX-UHFFFAOYSA-N trans-crotonic acid Natural products CC=CC(O)=O LDHQCZJRKDOVOX-UHFFFAOYSA-N 0.000 claims description 3
- 150000001408 amides Chemical class 0.000 claims description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims 1
- FLKPEMZONWLCSK-UHFFFAOYSA-N diethyl phthalate Chemical group CCOC(=O)C1=CC=CC=C1C(=O)OCC FLKPEMZONWLCSK-UHFFFAOYSA-N 0.000 claims 1
- 238000010557 suspension polymerization reaction Methods 0.000 claims 1
- 238000005303 weighing Methods 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 abstract description 26
- 230000006835 compression Effects 0.000 abstract description 9
- 238000007906 compression Methods 0.000 abstract description 9
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 6
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 24
- 239000000243 solution Substances 0.000 description 14
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 12
- NWGKJDSIEKMTRX-AAZCQSIUSA-N Sorbitan monooleate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O NWGKJDSIEKMTRX-AAZCQSIUSA-N 0.000 description 12
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 12
- SNRUBQQJIBEYMU-UHFFFAOYSA-N dodecane Chemical compound CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 12
- 229910052757 nitrogen Inorganic materials 0.000 description 12
- 239000000725 suspension Substances 0.000 description 7
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 description 6
- 239000007864 aqueous solution Substances 0.000 description 6
- 239000002585 base Substances 0.000 description 6
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 description 6
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 6
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 6
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 6
- MZSDGDXXBZSFTG-UHFFFAOYSA-M sodium;benzenesulfonate Chemical compound [Na+].[O-]S(=O)(=O)C1=CC=CC=C1 MZSDGDXXBZSFTG-UHFFFAOYSA-M 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- AISMNBXOJRHCIA-UHFFFAOYSA-N trimethylazanium;bromide Chemical compound Br.CN(C)C AISMNBXOJRHCIA-UHFFFAOYSA-N 0.000 description 6
- 150000002500 ions Chemical class 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- GFLJTEHFZZNCTR-UHFFFAOYSA-N 3-prop-2-enoyloxypropyl prop-2-enoate Chemical compound C=CC(=O)OCCCOC(=O)C=C GFLJTEHFZZNCTR-UHFFFAOYSA-N 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- HVVWZTWDBSEWIH-UHFFFAOYSA-N [2-(hydroxymethyl)-3-prop-2-enoyloxy-2-(prop-2-enoyloxymethyl)propyl] prop-2-enoate Chemical compound C=CC(=O)OCC(CO)(COC(=O)C=C)COC(=O)C=C HVVWZTWDBSEWIH-UHFFFAOYSA-N 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 229920000371 poly(diallyldimethylammonium chloride) polymer Polymers 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- FLCAEMBIQVZWIF-UHFFFAOYSA-N 6-(dimethylamino)-2-methylhex-2-enamide Chemical group CN(C)CCCC=C(C)C(N)=O FLCAEMBIQVZWIF-UHFFFAOYSA-N 0.000 description 1
- 241000272525 Anas platyrhynchos Species 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 102000002322 Egg Proteins Human genes 0.000 description 1
- 108010000912 Egg Proteins Proteins 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000010797 grey water Substances 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 230000015784 hyperosmotic salinity response Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N methanol Natural products OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 1
- 244000000010 microbial pathogen Species 0.000 description 1
- 210000004681 ovum Anatomy 0.000 description 1
- 230000024241 parasitism Effects 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000004154 testing of material Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/008—Sludge treatment by fixation or solidification
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment Of Sludge (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
A kind of curing of river silt disclosed by the invention, step 1, the following raw material is weighed respectively according to mass ratio：Cement 20%~45%, flyash 20%~50%, quick lime 10%~40%, fast-curing resin 0.01%~1%, mud fortified resin 0.1%~8%；Step 2, river silt is pre-processed；Step 3, add each raw material of the above-mentioned river silt curing agent weighed step by step into river silt, be well mixed it and obtain block curing sludge；Step 4, block curing sludge is subjected to mould compacting, finally gives curing sludge module；The curing of the river silt of the present invention greatly shortens the sludge solidification time, improves sludge material compression strength, tensile strength and splitting resistance after solidification, and closing heavy metal in sludge ion makes its not separate out, thoroughly solves the problems, such as sludge pollution environment.
Description
Technical field
The invention belongs to sullage solidifying method technical field, and in particular to a kind of curing of river silt.
Background technology
China can produce a large amount of during the water environment treatment such as harbour, the construction maintenance in navigation channel and river, lake every year
Dredging silt.According to statistics, Pearl River Delta area year dredging silt amount just up to 8 × 107m3, Taihu Lake Basin comprehensive environmental improvement
The m of dredging work amount about 35,000,0003, the maintenance of Deepwater Channel in Changjiang Estuary is every year with regard to producing the m of dredged mud 20,000,0003.Due to the power of mud
It is bad to learn performance, it is impossible to be directly engineering utilization, so can only fill nearby, take large amount of land resources；And current river
It is seriously polluted, in mud in addition to containing large quantity of moisture, also contain various heavy, organic pollution, pathogenic microorganism and parasitism
The harmful substances such as worm's ovum, landfill easily cause secondary pollution to environment.So efficient, economic and green resourceization processing mud, right
Energy-saving and emission-reduction, improve the ecological environment most important.
Chemosetting processing is carried out to mud and is translated into engineering material, so as to which the recycling reached to mud develops profit
With；The chemosetting material studied mainly has：(1) inorganic curing agent：This kind of curing agent mainly has cement, quick lime,
Flyash, gypsum etc., a series of physical chemical reaction, generation Ca (OH) can occurs in it with the water in mud2, CaCO3, aquation silicon
The mixtures such as sour calcium, it is coupled so as to increase the soil body, improves mud intensity, but its incorporation is larger, and treatment effeciency is low, curing materials
Just length of strong time, solidification cost are high；(2) organic curing agent：Such curing agent is divided to two kinds of liquid condition and solid state, mainly
There are pitch, cementing agent, fiber, epoxy resin etc., it is acted on by ion exchange, chemical polymerization etc., reduces the hole of soil
Water sorption caused by gap and surface tension, then vibration tamp, improves the compactness of silt soil, forms new mud soil property
Structure, easy for construction although organic hardener dose is less, the strength of materials is relatively low after solidification, and hardening time is longer,
And there is certain dependence to environment.
The content of the invention
It is an object of the invention to provide a kind of curing of river silt, it can effectively shorten hardening time, moreover it is possible to improve
The solidification intensity of mud.
The technical solution adopted in the present invention is a kind of curing of river silt, to comprise the following steps that：
Step 1, the following raw material is weighed respectively according to mass percent：
Cement 20%~45%, flyash 20%~45%, quick lime 20%~45%, fast-curing resin 0.1%~
8%, mud fortified resin 0.01%~1%, the mass percent sum of above-mentioned raw materials is 100%；
Step 2, determine and control the moisture content of river silt, it is in thick gel shape to make river silt, and pre- by grid
Debris is removed in processing, obtains pre-processing mud；
Step 3, the pretreatment mud obtained through step 2 is delivered in agitator, then progressively to pretreatment mud in add
Each raw material weighed in step 1, being stirred makes to be well mixed between each raw material, obtains block curing sludge, specifically according to
Lower step is implemented：
Step 3.1, the pretreatment mud obtained through step 2 is delivered in agitator；
Step 3.2, after step 3.1, the cement weighed in step 1 is sequentially added into pretreatment mud, flyash is raw
Lime and mud fortified resin, are stirred to it, it is sufficiently mixed solidification, obtain just curing sludge；
Step 3.3, fast-curing resin is added into the first curing sludge obtained through step 3.2, it is stirred, made
Fast-curing resin is well mixed with first curing sludge, obtains block curing sludge；
Step 4, the demoulding, which is stood, in block curing sludge press-in die step 3.3 obtained, after compacting solidifies, consolidate
Change mud module.
In step 1, fast-curing resin is specifically prepared according to following steps：
Step 1.1, using hexamethylene and dispersant uniformly as solvent, the volume ratio of hexamethylene and dispersant for 6~
8：1；
Step 1.2, at a temperature of less than 40 DEG C, by comonomer, crosslinking agent, inorganic oxide particles and coupling agent
Dissolving is mixed to, it is then overall to add in solvent made from step 1, obtain mixed liquor a；
Step 1.3, the initiator solution prepared in advance is added in obtained mixed liquor a into step 2, is carried out anti-phase
Suspension polymerisation, 65 DEG C~70 DEG C reaction 2h~3h are warming up to, finally give fast-curing resin.
In step 1.2, crosslinking agent accounts for the 0.09~1% of comonomer gross mass, and inorganic oxide accounts for the total matter of comonomer
The 0.2~1% of amount, coupling agent accounts for the 0.15~0.4% of comonomer gross mass.
In step 1.2, comonomer is formed by main monomer and auxiliary monomer copolymerization, and auxiliary monomer accounts for main monomer content
0.5%~10%.
Main monomer is acrylic acid, and auxiliary monomer is methacrylic acid, methyl acrylate, ethyl acrylate, butyl acrylate,
Glycol diacrylate, pentaerythritol triacrylate, cyanoacrylate, trimethylolpropane trimethacrylate, propylene
The different monooctyl ester of acid, PDDA, acrylic acid 2- cyclohexyl esters, acrylamide, methacryl
Amine, 2- acrylamide-2-methylpro panesulfonic acids, acrylonitrile, methacrylonitrile, maleic anhydride, crotonic acid, in styrene sulfonic acid
It is one or more.
Inorganic oxide is titanium dioxide, manganese dioxide, silica, iron oxide, cupric oxide, chrome green, three oxygen
Change the one or more in two nickel.
In step 1, mud fortified resin is specifically prepared according to following steps：
Step 1.1, the following raw material is weighed respectively according to mass percent：
First monomer 10%~20%, second comonomer 0.4%~1%, Third monomer 1%~4%, surfactant
0.1%~0.5%, initiator 0.4%~1%, buffer 1.5%~4%, surplus is water, the mass percent of above-mentioned raw materials
Sum is 100%；
Step 1.2, the 30% of respective quality in the first monomer, second comonomer and the Third monomer that successively weigh step 1
~40% and surfactant be added to the water stirring, carry out pre-emulsification, obtain pre-emulsion；
Step 1.3, the pre-emulsion obtained in step 2 is warming up to 80 DEG C, continues to sequentially add step into pre-emulsion
20%~30% and buffer of rapid 1 initiator quality weighed carry out emulsion polymerization, obtain colostric fluid；
Step 1.4, after the colostric fluid that step 3 obtains turns blue, continue to sequentially add remaining first list into colostric fluid
Temperature is down to room temperature after body, second comonomer and Third monomer and initiator, completely reaction, be eventually adding ammoniacal liquor regulation pH value and arrive
7~8, obtain mud fortified resin.
The first monomer in step 1.1 is styrene or methyl styrene；
Second comonomer is methyl acrylate, ethyl acrylate, propyl acrylate, isopropyl acrylate, butyl acrylate, third
Enoic acid ter-butyl ester, Isooctyl acrylate monomer, hydroxy-ethyl acrylate, hydroxypropyl acrylate, acrylic acid, methacrylic acid, metering system
Sour methyl esters, EMA, propyl methacrylate, isopropyl methacrylate, butyl methacrylate, metering system
Any one in tert-butyl acrylate；
Third monomer is acrylamide, Methacrylamide, N hydroxymethyl acrylamide, dimethylamino-propyl metering system
In acid amides, dimethylformamide, butoxymethyl acrylamide, epoxy resin, hydroxyethyl acrylamide and other nitrogen containing monomers
Any one.
The moisture content that mud is pre-processed in step 2 is 60%~70%.
In step 3, each raw material weighed in the step 1 of addition accounts for the 50%~67% of pretreatment mud.
Mixing speed is 40~80r/min in step 3.2, and mixing time is 30~60min；Stirred in the step 3.3
Speed is 100~150r/min, and mixing time is 10~30min.
The beneficial effects of the present invention are：
(1) curing of river silt of the invention, by adding mud fortified resin into inorganic solidification agent, improve
Mud compression strength after solidification, tensile strength and splitting resistance are strong, are further continued for adding fast-curing resin, substantially reduce silt
Mud hardening time, improve strong at the beginning of mud after solidification, the mud module after solidification can be used for the field such as brickmaking, roadbed, can solve
Certainly China's earth material scarcity problem, and can reduce the waste of land resource；River silt solidification composition of raw materials in the present invention is simple
And cost is cheap, operation is very simple, is not required to be calcined, without using special device, can continuous operation, and be adapted to extensive place
Manage river silt.
(2) curing of river silt of the invention, can treatment in situ mud, save traffic conveying cost, and make
With the method for the present invention, the heavy metal ion in river silt can be effectively closed, separate out also is difficult in water, thoroughly
Solve the problems, such as sludge pollution environment, realize energy-saving and emission-reduction.
Embodiment
With reference to embodiment, the present invention is described in detail.
A kind of curing of river silt of the present invention, is comprised the following steps that：
Step 1, the following raw material is weighed respectively according to mass percent：
Cement 20%~45%, flyash 20%~45%, quick lime 20%~45%, fast-curing resin 0.1%~
8%, mud fortified resin 0.01%~1%, the mass percent sum of said components is 100%；
Wherein, fast-curing resin is specifically prepared according to following steps：
Step 1.1, using hexamethylene and dispersant uniformly as solvent, the volume ratio of hexamethylene and dispersant for 6~
8：1；
Wherein, dispersant is the mixed liquor of Span-80 and cetyl trimethylammonium bromide, Span-80 and cetyl
The mass ratio of trimethylammonium bromide is 1：1.
Step 1.2, at a temperature of less than 40 DEG C, by comonomer, crosslinking agent, inorganic oxide particles and coupling agent
Dissolving is mixed to, it is then overall to add in solvent made from step 1, obtain mixed liquor a；
Crosslinking agent accounts for the 0.09~1% of comonomer gross mass, inorganic oxide account for comonomer gross mass 0.2~
1%, coupling agent accounts for the 0.15~0.4% of comonomer gross mass.
Wherein, crosslinking agent N, N '-methine bisacrylamide, coupling agent is four n-propyl zirconates；Comonomer by
Main monomer and auxiliary monomer copolymerization form, and auxiliary monomer accounts for the 0.5%~10% of main monomer content.
Wherein, main monomer is acrylic acid, and auxiliary monomer is methacrylic acid, methyl acrylate, ethyl acrylate, acrylic acid
Butyl ester, glycol diacrylate, pentaerythritol triacrylate, cyanoacrylate, trimethylolpropane trimethacrylate,
Isooctyl acrylate monomer, PDDA, acrylic acid 2- cyclohexyl esters, acrylamide, methyl-prop
Acrylamide, 2- acrylamide-2-methylpro panesulfonic acids, acrylonitrile, methacrylonitrile, maleic anhydride, crotonic acid, styrene sulfonic acid
In one or more.
Inorganic oxide is titanium dioxide, manganese dioxide, silica, iron oxide, cupric oxide, chrome green, three oxygen
Change the one or more in two nickel.
Step 1.3, the initiator solution prepared in advance is added in obtained mixed liquor a into step 2, is carried out anti-phase
Suspension polymerisation, 65 DEG C~70 DEG C reaction 2h~3h are warming up to, finally give fast-curing resin.
Wherein, initiator solution is the ammonium persulfate aqueous solution of mass ratio 1.1%.
Fast-curing resin is modified acrylic resin, can improve the salt tolerance of acrylic resin, reduces it solid
Addition in agent, shortens the first strong time of curing sludge, and can suppress to ftracture during use after sludge solidification, enhancing
Persistence.
Mud fortified resin is specifically prepared according to following steps：
Step 1.1, the following raw material is weighed respectively according to mass percent：
First monomer 10%~20%, second comonomer 0.4%~1%, Third monomer 1%~4%, surfactant
0.1%~0.5%, initiator 0.4%~1%, buffer 1.5%~4%, surplus is water, the mass percent of above-mentioned raw materials
Sum is 100%；
Wherein, the first monomer is styrene or methyl styrene；
Second comonomer is methyl acrylate, ethyl acrylate, propyl acrylate, isopropyl acrylate, butyl acrylate, third
Enoic acid ter-butyl ester, Isooctyl acrylate monomer, hydroxy-ethyl acrylate, hydroxypropyl acrylate, acrylic acid, methacrylic acid, metering system
Sour methyl esters, EMA, propyl methacrylate, isopropyl methacrylate, butyl methacrylate, metering system
Any one in tert-butyl acrylate；
Third monomer is：Acrylamide, Methacrylamide, N hydroxymethyl acrylamide, dimethylamino-propyl methyl-prop
In acrylamide, dimethylformamide, butoxymethyl acrylamide, epoxy resin, hydroxyethyl acrylamide and other nitrogen containing monomers
Any one.
Step 1.2, the 30% of respective quality in the first monomer, second comonomer and the Third monomer that successively weigh step 1
~40% and surfactant be added to the water stirring, carry out pre-emulsification, obtain pre-emulsion；
Wherein, surfactant is the mixed liquor of neopelex and OPEO, and dodecane
The mass ratio of base benzene sulfonic acid sodium salt and OPEO is 1:0.5.
Step 1.3, the pre-emulsion obtained in step 2 is warming up to 80 DEG C, continues to sequentially add step into pre-emulsion
20%~30% and buffer of rapid 1 initiator quality weighed carry out emulsion polymerization, obtain colostric fluid；
Wherein, initiator is ammonium persulfate, buffer NaHCO3。
Step 1.4, after the colostric fluid that step 3 obtains turns blue, continue to sequentially add remaining first list into colostric fluid
Temperature is down to room temperature after body, second comonomer and Third monomer and initiator, completely reaction, be eventually adding ammoniacal liquor regulation pH value and arrive
7~8, obtain mud fortified resin.
Mud fortified resin can increase the solid content of product, water resistance, alkali resistance and weatherability etc., can also reduce emulsion
Emulsifier during polymerization, reduce product cost.
Step 2, determine and control the moisture content of river silt, it is in thick gel shape to make river silt, and pre- by grid
Debris is removed in processing, obtains pre-processing mud, and the moisture content for pre-processing mud is 60%~70%；
River silt is removed into unnecessary water by screen, is allowed to almost turn into solid, but softness uses river without intensity
Mud drimeter determines river silt moisture content；
In river silt moisture content number dried with river silt, handling process, river silt state and mobile performance
It is closely related.
Step 3, the pretreatment mud obtained through step 2 is delivered in agitator, then progressively to pretreatment mud in add
Each raw material weighed in step 1, being stirred makes to be well mixed between each raw material, obtains block curing sludge, wherein, addition
Each raw material weighed in step 1 accounts for the 50%~67% of pretreatment mud；
Specifically implement according to following steps：
Step 3.1, the pretreatment mud obtained through step 2 is delivered in agitator；
Step 3.2, after step 3.1, the cement weighed in step 1 is sequentially added into pretreatment mud, flyash is raw
Lime and mud fortified resin, are stirred to it, it is sufficiently mixed solidification, obtain just curing sludge；
Wherein, mixing speed is 40r/min~80r/min, and mixing time is 30min~60min；
Step 3.3, fast-curing resin is added into the first curing sludge obtained through step 3.2, it is stirred, made
Fast-curing resin is well mixed with first curing sludge, obtains block curing sludge；
Wherein, mixing speed is 100r/min~150r/min, and mixing time is 10min~30min.
Step 4, in the mould block curing sludge obtained through step 3 press-in Multi-function material testing machine carried, pressure
The demoulding stands solidification after system, obtains curing sludge module；Stood in the block curing sludge press-in die that step 3 is obtained solid
Change, river silt can be made to reach prolonged curing effect, avoid in a short time loosely, influenceing solidification effect and the solidification in later stage being become silted up
Mud recycles.
Embodiment 1
Step 1, the following raw material is weighed respectively according to mass percent：
Cement 20%, flyash 35.09%, quick lime 44.80%, fast-curing resin 0.01%, mud fortified resin
0.1%, the mass percent sum of said components is 100%；
Wherein, fast-curing resin is specifically prepared according to following steps：
Step 1.1, using hexamethylene and dispersant uniformly as solvent, the volume ratio of hexamethylene and dispersant is 6：1；
Wherein, dispersant is the mixed liquor of Span-80 and cetyl trimethylammonium bromide, Span-80 and cetyl
The mass ratio of trimethylammonium bromide is 1：1.
Step 1.2, at a temperature of less than 40 DEG C, by comonomer, crosslinking agent, inorganic oxide particles and coupling agent
Dissolving is mixed to, it is then overall to add in solvent made from step 1, obtain mixed liquor a；
Crosslinking agent accounts for the 0.09% of comonomer gross mass, and inorganic oxide accounts for the 0.2% of comonomer gross mass, coupling
Agent accounts for the 0.15% of comonomer gross mass.
Wherein, crosslinking agent N, N '-methine bisacrylamide, coupling agent is four n-propyl zirconates；Comonomer by
Main monomer and auxiliary monomer copolymerization form, and auxiliary monomer accounts for the 0.5% of main monomer content.
Wherein, main monomer is acrylic acid, and auxiliary monomer is methacrylic acid；Inorganic oxide is titanium dioxide.
Step 1.3, the initiator solution prepared in advance is added in obtained mixed liquor a into step 2, is carried out anti-phase
Suspension polymerisation, 65 DEG C of reaction 2h are warming up to, finally give fast-curing resin.
Wherein, initiator solution is the ammonium persulfate aqueous solution that mass ratio is 1.1%.
Mud fortified resin is specifically prepared according to following steps：
Step 1.1, the following raw material is weighed respectively according to mass percent：
First monomer 10%, second comonomer 0.4%, Third monomer 1%, surfactant 0.1%, initiator 0.4%, delay
Electuary 1.5%, surplus are water, and the mass percent sum of above-mentioned raw materials is 100%；
Wherein, the first monomer is styrene；Second comonomer is methyl acrylate；Third monomer is acrylamide.
Step 1.2, the 30% of respective quality in the first monomer, second comonomer and the Third monomer that successively weigh step 1
It is added to the water stirring with surfactant, carries out pre-emulsification, obtain pre-emulsion；
Wherein, surfactant is the mixed liquor of neopelex and OPEO, and dodecane
The mass ratio of base benzene sulfonic acid sodium salt and OPEO is 1:0.5.
Step 1.3, the pre-emulsion obtained in step 2 is warming up to 80 DEG C, continues to sequentially add step into pre-emulsion
20% and buffer of rapid 1 initiator quality weighed carry out emulsion polymerization, obtain colostric fluid；
Wherein, initiator is ammonium persulfate, buffer NaHCO3。
Step 1.4, after the colostric fluid that step 3 obtains turns blue, continue to sequentially add remaining first list into colostric fluid
Temperature is down to room temperature after body, second comonomer and Third monomer and initiator, completely reaction, be eventually adding ammoniacal liquor regulation pH value and arrive
7, obtain mud fortified resin.
Step 2, determine and control the moisture content of river silt so that river silt is in thick gel shape, and passes through grid
Debris is removed in pretreatment, obtains the pretreatment mud that moisture content is 65%；
Step 3, the pretreatment mud obtained through step 2 is delivered in agitator, then progressively to pretreatment mud in add
Each raw material of river silt curing agent weighed in step 1, being stirred is well mixed each component, obtains block curing sludge,
Specifically implement according to following steps：
Step 3.1, the pretreatment mud obtained through step 2 is delivered in agitator；
Step 3.2, after step 3.1, cement, flyash, quick lime and silt are sequentially added to adding to pre-process in mud
Mud fortified resin, is stirred to it, it is sufficiently mixed solidification, obtains just curing sludge；
Wherein, mixing speed 60r/min, mixing time 30min；
Step 3.3, fast-curing resin is added into the first curing sludge obtained through step 3.2, it is stirred, made
Fast-curing resin is well mixed with first curing sludge, obtains block curing sludge；
Mixing speed is 120r/min, mixing time 10min；
Wherein, the mass ratio of each raw material of river silt curing agent and pretreatment mud is 1：1.5；
Step 4, the demoulding, which is stood, in block curing sludge press-in die step 3.3 obtained, after compacting solidifies, consolidate
Change mud module a.
Strength test is carried out to curing sludge module a and is shown in Table 1.
The curing sludge module a of table 1 resistance to compression, Tensile strength data table
Embodiment 2
Step 1, the following raw material is weighed respectively according to mass percent：
Cement 20%, flyash 30%, quick lime 41%, fast-curing resin 1%, mud fortified resin 8%, above-mentioned group
The mass percent sum divided is 100%；
Wherein, fast-curing resin is specifically prepared according to following steps：
Step 1.1, using hexamethylene and dispersant uniformly as solvent, the volume ratio of hexamethylene and dispersant is 8：1；
Wherein, dispersant is the mixed liquor of Span-80 and cetyl trimethylammonium bromide, Span-80 and cetyl
The mass ratio of trimethylammonium bromide is 1：1.
Step 1.2, at a temperature of less than 40 DEG C, by comonomer, crosslinking agent, inorganic oxide particles and coupling agent
Dissolving is mixed to, it is then overall to add in solvent made from step 1, obtain mixed liquor a；
Crosslinking agent accounts for the 1% of comonomer gross mass, and inorganic oxide accounts for the 1% of comonomer gross mass, and coupling agent accounts for
The 0.4% of comonomer gross mass.
Wherein, crosslinking agent N, N '-methine bisacrylamide, coupling agent is four n-propyl zirconates；Comonomer by
Main monomer and auxiliary monomer copolymerization form, and auxiliary monomer accounts for the 10% of main monomer content.
Wherein, main monomer is acrylic acid, and auxiliary monomer is methacrylic acid and methyl acrylate
Inorganic oxide is manganese dioxide.
Step 1.3, the initiator solution prepared in advance is added in obtained mixed liquor a into step 2, is carried out anti-phase
Suspension polymerisation, 65 DEG C of reaction 2h are warming up to, finally give fast-curing resin.
Wherein, initiator solution is the ammonium persulfate aqueous solution that mass ratio is 1.1%.
Mud fortified resin is specifically prepared according to following steps：
Step 1.1, the following raw material is weighed respectively according to mass percent：
First monomer 20%, second comonomer 1%, Third monomer 4%, surfactant 0.5%, initiator 1%, buffer
4%, surplus is water, and the mass percent sum of above-mentioned raw materials is 100%；
Wherein, the first monomer is styrene；Second comonomer is ethyl acrylate；Third monomer is Methacrylamide.
Step 1.2, the 35% of respective quality in the first monomer, second comonomer and the Third monomer that successively weigh step 1
It is added to the water stirring with surfactant, carries out pre-emulsification, obtain pre-emulsion；
Wherein, surfactant is the mixed liquor of neopelex and OPEO, and dodecane
The mass ratio of base benzene sulfonic acid sodium salt and OPEO is 1:2.
Step 1.3, the pre-emulsion obtained in step 2 is warming up to 80 DEG C, continues to sequentially add step into pre-emulsion
25% and buffer of rapid 1 initiator quality weighed carry out emulsion polymerization, obtain colostric fluid；
Wherein, initiator is ammonium persulfate, buffer NaHCO3。
Step 1.4, after the colostric fluid that step 3 obtains turns blue, continue to sequentially add remaining first list into colostric fluid
Temperature is down to room temperature after body, second comonomer and Third monomer and initiator, completely reaction, be eventually adding ammoniacal liquor regulation pH value and arrive
7, obtain mud fortified resin.
Step 2, determine and control the moisture content of river silt so that river silt is in thick gel shape, and passes through grid
Debris is removed in pretreatment, obtains the pretreatment mud that moisture content is 65%；
Step 3, the pretreatment mud obtained through step 2 is delivered in agitator, then progressively to pretreatment mud in add
Each raw material of river silt curing agent weighed in step 1, being stirred is well mixed each component, obtains block curing sludge,
Specifically implement according to following steps：
Step 3.1, the pretreatment mud obtained through step 2 is delivered in agitator；
Step 3.2, after step 3.1, cement, flyash, quick lime and silt are sequentially added to adding to pre-process in mud
Mud fortified resin, is stirred to it, it is sufficiently mixed solidification, obtains just curing sludge；
Wherein, mixing speed 80r/min, mixing time 30min；
Step 3.3, fast-curing resin is added into the first curing sludge obtained through step 3.2, it is stirred, made
Fast-curing resin is well mixed with first curing sludge, obtains block curing sludge；
Mixing speed is 100r/min, mixing time 10min；
Wherein, each raw material of river silt curing agent with pretreatment mud and mass ratio be 1：1.5；
Step 4, the demoulding, which is stood, in block curing sludge press-in die step 3.3 obtained, after compacting solidifies, consolidate
Change mud module b.
Strength test is carried out to curing sludge module b and is shown in Table 2.
The curing sludge module b of table 2 resistance to compression, Tensile strength data table.
Embodiment 3
Step 1, the following raw material is weighed respectively according to mass percent：
Cement 30%, flyash 40%, quick lime 26%, fast-curing resin 0.01%, mud fortified resin 3.99%,
The mass percent sum of said components is 100%；
Wherein, fast-curing resin is specifically prepared according to following steps：
Step 1.1, using hexamethylene and dispersant uniformly as solvent, the volume ratio of hexamethylene and dispersant is 7：1；
Wherein, dispersant is the mixed liquor of Span-80 and cetyl trimethylammonium bromide, Span-80 and cetyl
The mass ratio of trimethylammonium bromide is 1：1.
Step 1.2, at a temperature of less than 40 DEG C, by comonomer, crosslinking agent, inorganic oxide particles and coupling agent
Dissolving is mixed to, it is then overall to add in solvent made from step 1, obtain mixed liquor a；
Crosslinking agent accounts for the 0.2% of comonomer gross mass, and inorganic oxide accounts for the 0.5% of comonomer gross mass, coupling
Agent accounts for the 0.3% of comonomer gross mass.
Wherein, crosslinking agent N, N '-methine bisacrylamide, coupling agent is four n-propyl zirconates；Comonomer by
Main monomer and auxiliary monomer copolymerization form, and auxiliary monomer accounts for the 4% of main monomer content.
Wherein, main monomer is acrylic acid, and auxiliary monomer is ethyl acrylate.
Inorganic oxide is titanium dioxide and manganese dioxide.
Step 1.3, the initiator solution prepared in advance is added in obtained mixed liquor a into step 2, is carried out anti-phase
Suspension polymerisation, 65 DEG C of reaction 2h are warming up to, finally give fast-curing resin.
Wherein, initiator solution is the ammonium persulfate aqueous solution that mass ratio is 1.1%.
Mud fortified resin is specifically prepared according to following steps：
Step 1.1, the following raw material is weighed respectively according to mass percent：
First monomer 13%, second comonomer 0.7%, Third monomer 3%, surfactant 0.3%, initiator 0.5%, delay
Electuary 2%, surplus are water, and the mass percent sum of above-mentioned raw materials is 100%；
Wherein, the first monomer is styrene；Second comonomer is isopropyl acrylate；Third monomer is N- methylol acryloyls
Amine.
Step 1.2, the 40% of respective quality in the first monomer, second comonomer and the Third monomer that successively weigh step 1
It is added to the water stirring with surfactant, carries out pre-emulsification, obtain pre-emulsion；
Wherein, surfactant is the mixed liquor of neopelex and OPEO, and dodecane
The mass ratio of base benzene sulfonic acid sodium salt and OPEO is 1:0.5.
Step 1.3, the pre-emulsion obtained in step 2 is warming up to 80 DEG C, continues to sequentially add step into pre-emulsion
25% and buffer of rapid 1 initiator weighed carry out emulsion polymerization, obtain colostric fluid；
Wherein, initiator is ammonium persulfate, buffer NaHCO3。
Step 1.4, after the colostric fluid that step 3 obtains turns blue, continue to sequentially add remaining first list into colostric fluid
Temperature is down to room temperature after body, second comonomer and Third monomer and initiator, completely reaction, be eventually adding ammoniacal liquor regulation pH value and arrive
7, obtain mud fortified resin.
Step 2, determine and control the moisture content of river silt so that river silt is in thick gel shape, and passes through grid
Debris is removed in pretreatment, obtains the pretreatment mud that moisture content is 65%；
Step 3, pretreatment mud is delivered in agitator, is gradually added the river silt curing agent weighed in step 1, it is right
It, which is stirred, is well mixed each component, obtains block curing sludge, and specifically the step of addition river silt curing agent is：
Step 3.1, the pretreatment mud obtained through step 2 is delivered in agitator；
Step 3.2, after step 3.1, cement, flyash, quick lime and silt are sequentially added to adding to pre-process in mud
Mud fortified resin, is stirred to it, it is sufficiently mixed solidification, obtains just curing sludge；
Wherein, mixing speed 70r/min, mixing time 30min；
Step 3.3, fast-curing resin is added into the first curing sludge obtained through step 3.2, it is stirred, made
Fast-curing resin is well mixed with first curing sludge, obtains block curing sludge；
Mixing speed is 150r/min, mixing time 10min；
Wherein, each raw material of river silt curing agent with pretreatment mud and mass ratio be 1：1.5；
Step 4, the demoulding, which is stood, in block curing sludge press-in die step 3.3 obtained, after compacting solidifies, consolidate
Change mud module c.
Strength test is carried out to curing sludge module c and is shown in Table 3.
The curing sludge module c of table 3 resistance to compression, Tensile strength data table.
Embodiment 4
Step 1, the following raw material is weighed respectively according to mass percent：
Cement 44.9%, flyash 23%, quick lime 30%, fast-curing resin 0.1%, mud fortified resin 2%, on
The mass percent sum for stating component is 100%；
Wherein, fast-curing resin is specifically prepared according to following steps：
Step 1.1, using hexamethylene and dispersant uniformly as solvent, the volume ratio of hexamethylene and dispersant is 6：1；
Wherein, dispersant is the mixed liquor of Span-80 and cetyl trimethylammonium bromide, Span-80 and cetyl
The mass ratio of trimethylammonium bromide is 1：1.
Step 1.2, at a temperature of less than 40 DEG C, by comonomer, crosslinking agent, inorganic oxide particles and coupling agent
Dissolving is mixed to, it is then overall to add in solvent made from step 1, obtain mixed liquor a；
Crosslinking agent accounts for the 0.6% of comonomer gross mass, and inorganic oxide accounts for the 0.5% of comonomer gross mass, coupling
Agent accounts for the 0.3% of comonomer gross mass.
Wherein, crosslinking agent N, N '-methine bisacrylamide, coupling agent is four n-propyl zirconates；Comonomer by
Main monomer and auxiliary monomer copolymerization form, and auxiliary monomer accounts for the 0.5%~10% of main monomer content.
Wherein, main monomer is acrylic acid, and auxiliary monomer is methacrylic acid, methyl acrylate and ethyl acrylate.
Inorganic oxide is titanium dioxide.
Step 1.3, the initiator solution prepared in advance is added in obtained mixed liquor a into step 2, is carried out anti-phase
Suspension polymerisation, 70 DEG C of reaction 3h are warming up to, finally give fast-curing resin.
Wherein, initiator solution is the ammonium persulfate aqueous solution that mass ratio is 1.1%.
Mud fortified resin is specifically prepared according to following steps：
Step 1.1, the following raw material is weighed respectively according to mass percent：
First monomer 16%, second comonomer 0.5%, Third monomer 2%, surfactant 0.3%, initiator 0.7%, delay
Electuary 3%, surplus are water, and the mass percent sum of above-mentioned raw materials is 100%；
Wherein, the first monomer is methyl styrene；Second comonomer is methyl acrylate；Third monomer is dimethylamino-propyl
Methacrylamide.
Step 1.2, the 37% of respective quality in the first monomer, second comonomer and the Third monomer that successively weigh step 1
It is added to the water stirring with surfactant, carries out pre-emulsification, obtain pre-emulsion；
Wherein, surfactant is the mixed liquor of neopelex and OPEO, and dodecane
The mass ratio of base benzene sulfonic acid sodium salt and OPEO is 1:1.
Step 1.3, the pre-emulsion obtained in step 2 is warming up to 80 DEG C, continues to sequentially add step into pre-emulsion
25% and buffer of rapid 1 initiator weighed carry out emulsion polymerization, obtain colostric fluid；
Wherein, initiator is ammonium persulfate, buffer NaHCO3。
Step 1.4, after the colostric fluid that step 3 obtains turns blue, continue to sequentially add remaining first list into colostric fluid
Temperature is down to room temperature after body, second comonomer and Third monomer and initiator, completely reaction, be eventually adding ammoniacal liquor regulation pH value and arrive
7, obtain mud fortified resin.
Step 2, determine and control the moisture content of river silt so that river silt is in thick gel shape, and passes through grid
Debris is removed in pretreatment, obtains the pretreatment mud that moisture content is 65%；
Step 3, the pretreatment mud obtained through step 2 is delivered in agitator, then progressively to pretreatment mud in add
Each raw material of river silt curing agent weighed in step 1, being stirred is well mixed each component, obtains block curing sludge,
Specifically implement according to following steps：
Step 3.1, the pretreatment mud obtained through step 2 is delivered in agitator；
Step 3.2, after step 3.1, cement, flyash, quick lime and silt are sequentially added to adding to pre-process in mud
Mud fortified resin, is stirred to it, it is sufficiently mixed solidification, obtains just curing sludge；
Wherein, mixing speed 60r/min, mixing time 30min；
Step 3.3, fast-curing resin is added into the first curing sludge obtained through step 3.2, it is stirred, made
Fast-curing resin is well mixed with first curing sludge, obtains block curing sludge；
Mixing speed is 120r/min, mixing time 10min；
Wherein, each raw material of river silt curing agent with pretreatment mud and mass ratio be 1：1.5；
Step 4, by the block curing sludge that step 3.3 obtains by the way that in pipeline press-in die, demoulding standing is solid after compacting
Change, obtain curing sludge module d.
Strength test is carried out to curing sludge module d and is shown in Table 4.
The curing sludge module d of table 4 resistance to compression, Tensile strength data table.
Embodiment 5
Step 1, the following raw material is weighed respectively according to mass percent：
Cement 35%, flyash 20%, quick lime 41%, fast-curing resin 0.05%, mud fortified resin 3.95%,
The mass percent sum of said components is 100%；
Wherein, fast-curing resin is specifically prepared according to following steps：
Step 1.1, using hexamethylene and dispersant uniformly as solvent, the volume ratio of hexamethylene and dispersant is 6：1；
Wherein, dispersant is the mixed liquor of Span-80 and cetyl trimethylammonium bromide, Span-80 and cetyl
The mass ratio of trimethylammonium bromide is 1：1.
Step 1.2, at a temperature of less than 40 DEG C, by comonomer, crosslinking agent, inorganic oxide particles and coupling agent
Dissolving is mixed to, it is then overall to add in solvent made from step 1, obtain mixed liquor a；
Crosslinking agent accounts for the 0.1% of comonomer gross mass, and inorganic oxide accounts for the 0.3% of comonomer gross mass, coupling
Agent accounts for the 0.2% of comonomer gross mass.
Wherein, crosslinking agent N, N '-methine bisacrylamide, coupling agent is four n-propyl zirconates；Comonomer by
Main monomer and auxiliary monomer copolymerization form, and auxiliary monomer accounts for the 7% of main monomer content.
Wherein, main monomer is acrylic acid, and auxiliary monomer is methacrylic acid.
Inorganic oxide is iron oxide.
Step 1.3, the initiator solution prepared in advance is added in obtained mixed liquor a into step 2, is carried out anti-phase
Suspension polymerisation, 65 DEG C of reaction 2h are warming up to, finally give fast-curing resin.
Wherein, initiator solution is the ammonium persulfate aqueous solution that mass ratio is 1.1%.
Mud fortified resin is specifically prepared according to following steps：
Step 1.1, the following raw material is weighed respectively according to mass percent：
First monomer 16%, second comonomer 0.6%, Third monomer 2%, surfactant 0.2%, initiator 0.5%, delay
Electuary 3%, surplus are water, and the mass percent sum of above-mentioned raw materials is 100%；
Wherein, the first monomer is styrene；Second comonomer is methyl acrylate；Third monomer is acrylamide.
Step 1.2, the 32% of respective quality in the first monomer, second comonomer and the Third monomer that successively weigh step 1
It is added to the water stirring with surfactant, carries out pre-emulsification, obtain pre-emulsion；
Wherein, surfactant is the mixed liquor of neopelex and OPEO, and dodecane
The mass ratio of base benzene sulfonic acid sodium salt and OPEO is 1:0.5.
Step 1.3, the pre-emulsion obtained in step 2 is warming up to 80 DEG C, continues to sequentially add step into pre-emulsion
26% and buffer of rapid 1 initiator quality weighed carry out emulsion polymerization, obtain colostric fluid；
Wherein, initiator is ammonium persulfate, buffer NaHCO3。
Step 1.4, after the colostric fluid that step 3 obtains turns blue, continue to sequentially add remaining first list into colostric fluid
Temperature is down to room temperature after body, second comonomer and Third monomer and initiator, completely reaction, be eventually adding ammoniacal liquor regulation pH value and arrive
7, obtain mud fortified resin.
Step 2, determine and control the moisture content of river silt so that river silt is in thick gel shape, and passes through grid
Debris is removed in pretreatment, obtains the pretreatment mud that moisture content is 65%；
Step 3, the pretreatment mud obtained through step 2 is delivered in agitator, then progressively to pretreatment mud in add
Each raw material of river silt curing agent weighed in step 1, being stirred is well mixed each component, obtains block curing sludge,
Specifically implement according to following steps：
Step 3.1, the pretreatment mud obtained through step 2 is delivered in agitator；
Step 3.2, after step 3.1, cement, flyash, quick lime and silt are sequentially added to adding to pre-process in mud
Mud fortified resin, is stirred to it, it is sufficiently mixed solidification, obtains just curing sludge；
Wherein, mixing speed 80r/min, mixing time 30min；
Step 3.3, fast-curing resin is added into the first curing sludge obtained through step 3.2, it is stirred, made
Fast-curing resin is well mixed with first curing sludge, obtains block curing sludge；
Mixing speed is 100r/min, mixing time 30min；
Wherein, each raw material of river silt curing agent with pretreatment mud and mass ratio be 1：1.5；
Step 4, the demoulding, which is stood, in block curing sludge press-in die step 3.3 obtained, after compacting solidifies, consolidate
Change mud module e.
Strength test is carried out to curing sludge module e and is shown in Table 5.
The curing sludge module e of table 5 resistance to compression, Tensile strength data table.
Comparative example 1
Step 1, the following raw material is weighed respectively according to mass percent：
Cement 20.11%, flyash 35.09%, quick lime 44.80%, fast-curing resin 0%, mud fortified resin
0%, the mass percent sum of said components is 100%；
Step 2, determine and control the moisture content of river silt so that river silt is in thick gel shape, and passes through grid
Debris is removed in pretreatment, obtains the pretreatment mud that moisture content is 65%；
Step 3, the pretreatment mud obtained through step 2 is delivered in agitator, then progressively to pretreatment mud in add
Each raw material of river silt curing agent weighed in step 1, being stirred is well mixed each component, obtains block curing sludge,
Wherein, mixing speed 80r/min, mixing time 30min.
Wherein, each raw material of river silt curing agent with pretreatment mud and mass ratio be 1：1.5；
Step 4, the block curing sludge that step 3 obtains is solidified by the way that the demoulding is stood in pipeline press-in die, after compacting,
Obtain curing sludge module f.
Strength test is carried out to curing sludge module f and is shown in Table 6.
The curing sludge module f of table 6 resistance to compression, Tensile strength data table.
By table 1~5 compared with table 6 after can be seen that, in the case where inorganic material amount is basically unchanged, by inorganic
Fast-curing resin is added in curing agent, greatly shortens the sludge solidification time, it is strong at the beginning of mud after raising solidification, while add mud
Fortified resin, mud compression strength, tensile strength and splitting resistance after solidification are effectively increased, in addition, fast-curing resin
With the addition of mud fortified resin, cement consumption in curing agent can be greatly reduced, reduce cost.
For influence of the research curing agent to heavy metal ion in river silt, the river silt of this experiment uses Chan river silts
Mud, content of beary metal detection is carried out to uncured river silt, also, the solidification after the solidification of river silt curing agent is become silted up
After the immersion of mud mould block, the heavy metal situation in soaking water is detected, as a result as shown in table 7；
Heavy metal ion content table of the river silt in water after table 7 solidifies
As can be seen from Table 7, the heavy metals such as Cr, Zn, Pb, Cu are contained in mud；River silt module after solidification is soaked
Duck in drink, one day, one week, Analysis of Heavy Metals is carried out to soaking water after first quarter moon, do not detect heavy metal component, analysis knot
Fruit shows that river silt can effectively close the heavy metal ion in mud, i.e., after the river silt curing agent solidification of the present invention
Make also to be difficult to separate out in water, secondary pollution will not be caused to environment, thoroughly solve the problems, such as sludge pollution environment, realize
Energy-saving and emission-reduction.
Claims (10)
1. a kind of curing of river silt, it is characterised in that comprise the following steps that：
Step 1, the following raw material is weighed respectively according to mass percent：
Cement 20%~45%, flyash 20%~45%, quick lime 20%~45%, fast-curing resin 0.1%~8%,
Mud fortified resin 0.01%~1%, the mass percent sum of above-mentioned raw materials is 100%；
Step 2, determine and control the moisture content of river silt, it is in thick gel shape to make river silt, and is pre-processed by grid
Debris is removed, obtains pre-processing mud；
Step 3, the pretreatment mud obtained through step 2 is delivered in agitator, then the progressively addition step 1 into pretreatment mud
In each raw material for weighing, being stirred makes to be well mixed between each raw material, block curing sludge is obtained, specifically according to following steps
Implement：
Step 3.1, the pretreatment mud obtained through step 2 is delivered in agitator；
Step 3.2, after step 3.1, the cement weighed in step 1, flyash, quick lime are sequentially added into pretreatment mud
And mud fortified resin, it is stirred, it is sufficiently mixed solidification, obtains just curing sludge；
Step 3.3, fast-curing resin is added into the first curing sludge obtained through step 3.2, it is stirred, made quick
Solidified resin is well mixed with first curing sludge, obtains block curing sludge；
Step 4, the demoulding, which is stood, in block curing sludge press-in die step 3.3 obtained, after compacting solidifies, and obtains solidification and becomes silted up
Mud mould block.
A kind of 2. curing of river silt as claimed in claim 1, it is characterised in that in the step 1, rapid curing
Resin is specifically prepared according to following steps：
Step 1.1, using hexamethylene and dispersant uniformly as solvent, the volume ratio of hexamethylene and dispersant is 6~8：1；
Step 1.2, at a temperature of less than 40 DEG C, by comonomer, crosslinking agent, inorganic oxide particles and coupling agent mixing
Stirring is then overall to add in solvent made from step 1 to dissolving, and obtains mixed liquor a；
Step 1.3, the initiator solution prepared in advance is added in obtained mixed liquor a into step 2, carries out anti-phase suspension
Polymerization, 65 DEG C~70 DEG C reaction 2h~3h are warming up to, finally give fast-curing resin.
A kind of 3. curing of river silt as claimed in claim 2, it is characterised in that in the step 1.2, crosslinking agent
The 0.09~1% of comonomer gross mass is accounted for, inorganic oxide accounts for the 0.2~1% of comonomer gross mass, and coupling agent accounts for copolymerization
The 0.15~0.4% of monomer gross mass.
4. a kind of curing of river silt as claimed in claim 3, it is characterised in that in the step 1.2, copolymerization is single
Body is formed by main monomer and auxiliary monomer copolymerization, and auxiliary monomer accounts for the 0.5%~10% of main monomer content.
A kind of 5. curing of river silt as claimed in claim 4, it is characterised in that the main monomer is acrylic acid,
Auxiliary monomer is methacrylic acid, methyl acrylate, ethyl acrylate, butyl acrylate, glycol diacrylate, Ji Wusi
Alcohol triacrylate, cyanoacrylate, trimethylolpropane trimethacrylate, Isooctyl acrylate monomer, phthalic acid diethyl
Omega-diol diacrylate, acrylic acid 2- cyclohexyl esters, acrylamide, Methacrylamide, 2- acrylamido -2- methyl-props
Sulfonic acid, acrylonitrile, methacrylonitrile, maleic anhydride, crotonic acid, the one or more in styrene sulfonic acid.
Inorganic oxide is titanium dioxide, and manganese dioxide, silica, iron oxide, cupric oxide, chrome green, three aoxidize two
One or more in nickel.
6. a kind of curing of river silt as claimed in claim 1, it is characterised in that in the step 1, mud is strengthened
Resin is specifically prepared according to following steps：
Step 1.1, the following raw material is weighed respectively according to mass percent：
First monomer 10%~20%, second comonomer 0.4%~1%, Third monomer 1%~4%, surfactant 0.1%~
0.5%, initiator 0.4%~1%, buffer 1.5%~4%, surplus is water, and the mass percent sum of above-mentioned raw materials is
100%；
Step 1.2, the 30% of respective quality in the first monomer, second comonomer and the Third monomer that successively weigh step 1~
40% and surfactant be added to the water stirring, carry out pre-emulsification, obtain pre-emulsion；
Step 1.3, the pre-emulsion obtained in step 2 is warming up to 80 DEG C, continues to sequentially add step 1 into pre-emulsion and claim
20%~30% and buffer of the initiator quality taken carry out emulsion polymerization, obtain colostric fluid；
Step 1.4, after the colostric fluid that step 3 obtains turns blue, continue to sequentially add remaining first monomer, into colostric fluid
Temperature is down to room temperature after two monomers and Third monomer and initiator, completely reaction, be eventually adding ammoniacal liquor and adjust pH value to 7~8,
Obtain mud fortified resin.
7. a kind of curing of river silt as claimed in claim 6, it is characterised in that first in the step 1.1
Monomer is styrene or methyl styrene；
The second comonomer is methyl acrylate, ethyl acrylate, propyl acrylate, isopropyl acrylate, butyl acrylate, third
Enoic acid ter-butyl ester, Isooctyl acrylate monomer, hydroxy-ethyl acrylate, hydroxypropyl acrylate, acrylic acid, methacrylic acid, metering system
Sour methyl esters, EMA, propyl methacrylate, isopropyl methacrylate, butyl methacrylate, metering system
Any one in tert-butyl acrylate；
The Third monomer is acrylamide, Methacrylamide, N hydroxymethyl acrylamide, dimethylamino-propyl metering system
In acid amides, dimethylformamide, butoxymethyl acrylamide, epoxy resin, hydroxyethyl acrylamide and other nitrogen containing monomers
Any one.
8. a kind of curing of river silt as claimed in claim 1, it is characterised in that pre-process and become silted up in the step 2
The moisture content of mud is 60%~70%.
A kind of 9. curing of river silt as claimed in claim 1, it is characterised in that in the step 3, the step of addition
Each raw material weighed in rapid 1 accounts for the 50%~67% of pretreatment mud.
10. a kind of curing of river silt as claimed in claim 1, it is characterised in that speed is stirred in the step 3.2
It is 30~60min to spend for 40~80r/min, mixing time；Mixing speed is 100~150r/min in the step 3.3, stirring
Time is 10~30min.
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| CN111620529A (en) * | 2020-06-05 | 2020-09-04 | 广东工业大学 | Curing agent for sludge road and preparation method thereof |
| CN111620529B (en) * | 2020-06-05 | 2022-08-16 | 广东工业大学 | Curing agent for sludge road and preparation method thereof |
| CN112897967A (en) * | 2021-02-05 | 2021-06-04 | 绿润环境科技(宁波)有限公司 | Sludge brick and preparation method thereof |
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