CN116062969A - High-efficiency multifunctional sludge dewatering agent, composite preparation method and application method thereof - Google Patents
High-efficiency multifunctional sludge dewatering agent, composite preparation method and application method thereof Download PDFInfo
- Publication number
- CN116062969A CN116062969A CN202211551939.8A CN202211551939A CN116062969A CN 116062969 A CN116062969 A CN 116062969A CN 202211551939 A CN202211551939 A CN 202211551939A CN 116062969 A CN116062969 A CN 116062969A
- Authority
- CN
- China
- Prior art keywords
- sludge
- parts
- dewatering agent
- sludge dewatering
- calcium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000010802 sludge Substances 0.000 title claims abstract description 219
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 114
- 238000000034 method Methods 0.000 title claims abstract description 73
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 239000002131 composite material Substances 0.000 title claims abstract description 10
- 238000011282 treatment Methods 0.000 claims abstract description 66
- 239000010865 sewage Substances 0.000 claims abstract description 51
- 239000002994 raw material Substances 0.000 claims abstract description 42
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims abstract description 18
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims abstract description 18
- 159000000007 calcium salts Chemical class 0.000 claims abstract description 18
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 16
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 16
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical class O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 15
- 125000002091 cationic group Chemical group 0.000 claims abstract description 14
- 239000006247 magnetic powder Substances 0.000 claims abstract description 13
- 230000008569 process Effects 0.000 claims description 36
- 238000002156 mixing Methods 0.000 claims description 18
- 230000003750 conditioning effect Effects 0.000 claims description 17
- 238000003756 stirring Methods 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 9
- 238000003825 pressing Methods 0.000 claims description 9
- 238000003860 storage Methods 0.000 claims description 9
- 238000005070 sampling Methods 0.000 claims description 8
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 6
- PPQREHKVAOVYBT-UHFFFAOYSA-H dialuminum;tricarbonate Chemical compound [Al+3].[Al+3].[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O PPQREHKVAOVYBT-UHFFFAOYSA-H 0.000 claims description 6
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 4
- 229910019142 PO4 Inorganic materials 0.000 claims description 4
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 4
- 229910052918 calcium silicate Inorganic materials 0.000 claims description 4
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 claims description 4
- 229910000360 iron(III) sulfate Inorganic materials 0.000 claims description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 4
- 239000010452 phosphate Substances 0.000 claims description 4
- WHQOKFZWSDOTQP-UHFFFAOYSA-N 2,3-dihydroxypropyl 4-aminobenzoate Chemical compound NC1=CC=C(C(=O)OCC(O)CO)C=C1 WHQOKFZWSDOTQP-UHFFFAOYSA-N 0.000 claims description 3
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 3
- ZKQDCIXGCQPQNV-UHFFFAOYSA-N Calcium hypochlorite Chemical compound [Ca+2].Cl[O-].Cl[O-] ZKQDCIXGCQPQNV-UHFFFAOYSA-N 0.000 claims description 3
- 239000005955 Ferric phosphate Substances 0.000 claims description 3
- 229940118662 aluminum carbonate Drugs 0.000 claims description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- YALMXYPQBUJUME-UHFFFAOYSA-L calcium chlorate Chemical compound [Ca+2].[O-]Cl(=O)=O.[O-]Cl(=O)=O YALMXYPQBUJUME-UHFFFAOYSA-L 0.000 claims description 3
- 239000001110 calcium chloride Substances 0.000 claims description 3
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 3
- 239000004227 calcium gluconate Substances 0.000 claims description 3
- 229960004494 calcium gluconate Drugs 0.000 claims description 3
- 235000013927 calcium gluconate Nutrition 0.000 claims description 3
- 239000000378 calcium silicate Substances 0.000 claims description 3
- NEEHYRZPVYRGPP-UHFFFAOYSA-L calcium;2,3,4,5,6-pentahydroxyhexanoate Chemical compound [Ca+2].OCC(O)C(O)C(O)C(O)C([O-])=O.OCC(O)C(O)C(O)C(O)C([O-])=O NEEHYRZPVYRGPP-UHFFFAOYSA-L 0.000 claims description 3
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims description 3
- 229940032958 ferric phosphate Drugs 0.000 claims description 3
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 claims description 3
- 229910000399 iron(III) phosphate Inorganic materials 0.000 claims description 3
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims description 3
- 239000001095 magnesium carbonate Substances 0.000 claims description 3
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims description 3
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims 2
- 235000012241 calcium silicate Nutrition 0.000 claims 2
- JHLNERQLKQQLRZ-UHFFFAOYSA-N calcium silicate Chemical compound [Ca+2].[Ca+2].[O-][Si]([O-])([O-])[O-] JHLNERQLKQQLRZ-UHFFFAOYSA-N 0.000 claims 1
- BCAARMUWIRURQS-UHFFFAOYSA-N dicalcium;oxocalcium;silicate Chemical compound [Ca+2].[Ca+2].[Ca]=O.[O-][Si]([O-])([O-])[O-] BCAARMUWIRURQS-UHFFFAOYSA-N 0.000 claims 1
- 239000000377 silicon dioxide Substances 0.000 claims 1
- 235000012239 silicon dioxide Nutrition 0.000 claims 1
- 235000019976 tricalcium silicate Nutrition 0.000 claims 1
- 229910021534 tricalcium silicate Inorganic materials 0.000 claims 1
- 230000018044 dehydration Effects 0.000 abstract description 10
- 238000006297 dehydration reaction Methods 0.000 abstract description 10
- 239000003814 drug Substances 0.000 abstract description 7
- 230000009467 reduction Effects 0.000 abstract description 5
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 58
- 230000000694 effects Effects 0.000 description 15
- 208000005156 Dehydration Diseases 0.000 description 9
- 239000000047 product Substances 0.000 description 9
- 238000004659 sterilization and disinfection Methods 0.000 description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 5
- 239000011574 phosphorus Substances 0.000 description 5
- 229910052698 phosphorus Inorganic materials 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 229940100555 2-methyl-4-isothiazolin-3-one Drugs 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 4
- 238000005189 flocculation Methods 0.000 description 4
- 230000016615 flocculation Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- BEGLCMHJXHIJLR-UHFFFAOYSA-N methylisothiazolinone Chemical compound CN1SC=CC1=O BEGLCMHJXHIJLR-UHFFFAOYSA-N 0.000 description 4
- 238000004062 sedimentation Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 230000001954 sterilising effect Effects 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 2
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910001570 bauxite Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229960005069 calcium Drugs 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 239000012024 dehydrating agents Substances 0.000 description 2
- 238000004332 deodorization Methods 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 229910001385 heavy metal Chemical class 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- -1 methylene phosphonic acid Chemical compound 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- UEZVMMHDMIWARA-UHFFFAOYSA-M phosphonate Chemical compound [O-]P(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-M 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 229920000570 polyether Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000012629 purifying agent Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 231100000167 toxic agent Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 231100000419 toxicity Toxicity 0.000 description 2
- 230000001988 toxicity Effects 0.000 description 2
- CNHKYDVADQZWKC-UHFFFAOYSA-N 1-[4-[diazo(hydroxy)methyl]-2,5-dioxoimidazolidin-4-yl]-3-[[[4-(hydroxymethyl)-2,5-dioxoimidazolidin-4-yl]carbamoylamino]methyl]urea Chemical compound [N+](=[N-])=C(O)C1(NC(=O)NCNC(=O)NC2(CO)NC(=O)NC2=O)NC(=O)NC1=O CNHKYDVADQZWKC-UHFFFAOYSA-N 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 229920001661 Chitosan Polymers 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical class [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 239000003899 bactericide agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical class [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Chemical class 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000004042 decolorization Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- YDEXUEFDPVHGHE-GGMCWBHBSA-L disodium;(2r)-3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Na+].[Na+].COC1=CC=CC(C[C@H](CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O YDEXUEFDPVHGHE-GGMCWBHBSA-L 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical class [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- OMNKZBIFPJNNIO-UHFFFAOYSA-N n-(2-methyl-4-oxopentan-2-yl)prop-2-enamide Chemical compound CC(=O)CC(C)(C)NC(=O)C=C OMNKZBIFPJNNIO-UHFFFAOYSA-N 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000008177 pharmaceutical agent Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- UMPKMCDVBZFQOK-UHFFFAOYSA-N potassium;iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[K+].[Fe+3] UMPKMCDVBZFQOK-UHFFFAOYSA-N 0.000 description 1
- 239000000941 radioactive substance Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
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
- C02F11/148—Combined use of inorganic and organic substances, being added in the same treatment step
-
- 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
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- 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
- C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention provides a high-efficiency multifunctional sludge dewatering agent, a composite preparation method and an application method thereof, and belongs to the technical field of resource environment. The high-efficiency multifunctional sludge dewatering agent comprises the following components: 5-25 parts of cationic polyacrylamide; 5-30 parts of inorganic polymeric flocculant; 10-30 parts of polymerized aluminum ferric diacid; 10-40 parts of calcium salt; 0.5-10 parts of carbonate; 5-25 parts of silicate; 10-25 parts of modified bentonite; 1-5 parts of magnetic powder. The invention can be used for sludge treatment systems of municipal sludge, industrial sludge, river sludge, mine sludge and the like, can be used as a sewage treatment agent and a sludge conditioner, can improve the dehydration, volume reduction and consumption reduction of sludge, realizes the reduction, harmless and recycling treatment and utilization, and saves the precious medicament raw material resources and other product resources.
Description
Technical Field
The invention relates to the technical field of resource environment, in particular to a high-efficiency multifunctional sludge dewatering agent, a composite preparation method and an application method thereof.
Background
If the improperly treated sludge enters the environment, secondary pollution can be directly brought to the water body and the atmosphere. An urban sewage treatment plant can not fully play the role of eliminating pollution and protecting environment if the sludge treatment is not performed, and meanwhile, the ecological environment and human activities are seriously threatened. The sludge has high water content and complex and changeable components, and contains a great amount of organic matters, rich nitrogen, phosphorus and other nutrients, various bacteria, viruses, parasitic organisms and other toxic and harmful components, and the sludge may be concentrated with mercury, chromium, lead, cadmium and other heavy metal compounds, refractory toxic compounds and other toxic compounds due to different sources. If these sludges are not properly treated, they can cause damage to the ecological environment and harm human health. China is faced with huge sludge treatment pressure while the sewage treatment industry is continuously advancing.
At present, the basic method for treating the sludge in China comprises the following steps: physical treatment, chemical treatment and biological treatment, but the first treatment of each method is dehydration and volume reduction of sludge, which is the beginning of each treatment process and has important influence on the process and technical cost of the whole sludge treatment and the subsequent treatment effect.
Wherein the chemical treatment method of sludge dewatering is the main treatment method; the currently adopted sludge dewatering treatment method mainly comprises flocculation, sedimentation, separation and the largest dosage of polymeric flocculant mainly represented by PAM, which accounts for 80 percent of the dosage of the treatment agent. The flocculant required by domestic industrial sewage and municipal sewage treatment is about millions of tons and has high market share, but the flocculant has the defects of high cost and toxicity, and the flocculant is difficult to realize the dehydration standard requirement that the sludge dehydration reaches below 80% under the centrifuge process condition and the sludge dehydration reaches below 60% under the plate and frame press filtration process condition. In addition, in the treatment process of dewatering sludge, a large amount of reagents such as quicklime, ferric salt and the like are required to be added in order to reduce the water content of the sludge, so that the produced sludge is alkaline, the volume of the produced sludge is increased, and the problems that the subsequent sludge cannot be recycled, the volume is large, the transportation and disposal costs are high and the like are caused.
For example, a sewage treatment agent (publication number: CN 104944603A) is composed of: 50-100 parts of polyamino polyether methylene phosphonic acid, diazo imidazolidinyl urea, methylisothiazolinone, medical stone particles, sodium lignin sulfonate, chitosan, polyvinylpyrrolidone, polysilicate aluminum sulfate, diacetone acrylamide, phosphonate and deionized water. From the above components, it can be seen that 11 kinds of different raw material components are used, and the raw materials are various and complicated. Wherein the added polyamino polyether methylene phosphonic acid is 20-40 parts and phosphonate is 20-40 parts. They are all medium-high phosphorus water treatment agents, and the medium-high phosphorus water treatment agents can produce phosphate deposition when used in a system. The phosphorus-containing substances are added into a water system to serve as a nutrient source, so that water body eutrophication is realized, excessive propagation of microorganism algae is promoted, and consumption of bactericide is increased. The pressure is brought to the water treatment at the later stage, for example, after the water is improperly treated and enters the environment, secondary pollution of the ecological environment is caused, and the ecological balance of the environment is seriously damaged. 10-30 parts of methylisothiazolinone is also added into the sewage treatment agent. The methylisothiazolinone contains toxicity, the raw liquid is 10-30 parts by weight, the methylisothiazolinone is not easy to degrade in a short time, and the biological influence on water body can be caused due to poor treatment.
For example, a method for treating dehydrated sludge of a domestic sewage treatment plant (publication No. CN102276128A mainly comprises the following steps of firstly measuring limestone, magnesia and bauxite with the weight percentage of 40% -60% to 20% -30%, and then uniformly mixing the limestone, the magnesia and the bauxite and then firing at 900-1200 ℃ for 1-2 hours to obtain a sludge curing agent; the invention provides a method for preparing a sludge solidifying agent, which comprises the steps of taking dewatered sludge, wherein the dewatered sludge is mixed with the sludge solidifying agent in a ratio of 90% -95% by weight to 5% -10% by weight, stirring, uniformly mixing, spreading in the open air for 20-30cm thick, standing for 48 hours to obtain a sludge solidifying body, and finally burying for disposal, wherein the prepared sludge solidifying agent needs to be burnt for 1-2 hours at 900-1200 ℃, the method can be completed by using high-temperature mechanical equipment to consume a large amount of electric energy to convert the electric energy into heat energy, and the working procedures such as cooling, crushing and grinding are completed, finally, the method is added into the dewatered sludge for mechanical stirring, and airing in the open air for two days is required to be transported to a landfill for disposal, the working procedures of the preparation method are numerous, the requirements on the temperature of the preparation process are high, the mechanical heating and cooling equipment are increased, the electric energy and the heat energy consumption are large, the special preparation site are required, and the like are increased for production enterprises, the requirements on the field of the sludge is large and the period is long, the circulating water is not suitable for operation, the method is also not suitable for being used in the middle-sized urban area with a large scale and is not suitable for being treated in the open air, and has the large pollution treatment due to the fact that the large scale is very limited in daily use, the requirements of original process equipment and storage yards are not realistic.
So at present, a high-efficiency sludge dehydrating agent capable of realizing sludge dehydration with 99% of water content to less than 60% of water content in one step is urgently needed for domestic sludge dehydrating agent. With the increase of environmental protection consciousness, the stricter the national regulations on the water outlet requirements of the reclaimed water system. There are stringent limits to the inclusion of toxic sludge treatment agents and less degradable sewage treatment agents. Instead, the sludge dewatering agent which can realize one-step dewatering to less than 60 percent, is efficient, nontoxic, harmless and degradable is necessary.
Disclosure of Invention
In order to solve the technical problems, the invention provides a high-efficiency multifunctional sludge dewatering agent, a composite preparation method and an application method thereof by utilizing a sludge treatment system of municipal sludge, industrial sludge, river sludge, mine sludge and the like, which can improve sludge dewatering, reduce volume and consumption, realize reduction, innocuity and recycling treatment and utilization, and save precious medicament raw material resources.
The technical scheme of the invention is realized as follows:
the first aspect of the invention provides a high-efficiency multifunctional sludge dewatering agent, which comprises the following components: 5-25 parts of cationic polyacrylamide; 5-30 parts of inorganic polymeric flocculant; 10-30 parts of polymerized aluminum ferric diacid; 10-40 parts of calcium salt; 0.5-10 parts of carbonate; 5-25 parts of silicate; 10-25 parts of modified bentonite; 1-5 parts of magnetic powder.
Further, the inorganic polymeric flocculant is: one or more of polyaluminum chloride, polyaluminum sulfate, polyaluminum phosphate, polyaluminum ferric sulfate and polyaluminum ferric phosphate.
Further, the calcium salt is: one or more of calcium chloride, calcium sulfate, calcium chlorate, calcium gluconate, calcium hypochlorite and calcium perchlorate.
Further, the carbonate is: potassium carbonate, calcium carbonate, sodium carbonate, magnesium carbonate, aluminum carbonate, or a mixture of one or more of them.
Further, the silicate is: one or more of calcium silicate, calcium aluminate and calcium aluminoferrite.
The second aspect of the present invention provides a composite preparation method of a high-efficiency multifunctional sludge dewatering agent, which is used for preparing the high-efficiency multifunctional sludge dewatering agent, and comprises the following steps:
step one, preparing raw materials: the raw materials comprise a raw material I, a raw material II and a raw material III;
wherein the raw material I comprises an inorganic polymeric flocculant, polymeric ferric aluminum and calcium salt; carbonate, silicate and modified bentonite;
the second raw material is cationic polyacrylamide;
the third raw material is magnetic powder;
opening a closed U-shaped negative pressure self-priming mixing stirrer, sequentially sucking 10-25 parts of modified bentonite, 5-25 parts of silicate, 10-40 parts of calcium salt, 0.5-10 parts of carbonate and 10-30 parts of polymerized aluminum ferric diacid into the mixing stirrer by using a negative pressure self-priming vacuum feeder, and starting the mixing stirrer to uniformly mix;
step three, adding 5-25 parts of cationic polyacrylamide in the raw material II into the step two, and continuously stirring and uniformly mixing;
and step four, adding 1-5 parts of magnetic powder in the raw material III into the step three, and continuously stirring and uniformly mixing to obtain the high-efficiency multifunctional sludge dewatering agent.
The third aspect of the invention provides an application method of the high-efficiency multifunctional sludge dewatering agent, which comprises the following steps:
step one, calculating the actual storage capacity of a sludge or sewage conditioning tank;
step two, sampling and analyzing the concentration of the shift sludge or sewage on the same day;
step three, calculating the addition amount of the high-efficiency multifunctional sludge dewatering agent according to the collected data;
step four, according to the on-site treatment process, selecting a specific treatment mode, adding the high-efficiency multifunctional sludge dewatering agent, and treating sludge or sewage;
the treatment process comprises a plate and frame process and a centrifugal machine process;
when the method is applied to a plate-and-frame process, the high-efficiency multifunctional sludge dewatering agent is added into a sludge inlet of a sludge conditioning tank according to the on-site working condition, and the mixture is stirred for 20-40 minutes after the addition is finished and then directly enters a plate-and-frame filter press for filter pressing and dewatering;
when the efficient multifunctional sludge dewatering agent is applied to a centrifugal machine process, the efficient multifunctional sludge dewatering agent is directly dissolved into a solution in a dissolving tank, and then enters a sludge conveying pipe through a dosing pipe and enters a centrifugal machine for centrifugal dewatering. When the high-efficiency multifunctional sludge dewatering agent is applied to a centrifugal machine process, the concentration of the high-efficiency multifunctional sludge dewatering agent solution is 3-5 per mill.
Further, the data in the second step are obtained according to the following formula:
the concentration of the sludge or sewage is obtained according to the following formula:
ρ＝(W1-W2)×10 6 /V
wherein ρ is the concentration of sludge or sewage in mg/L; w1 is the weight of sludge plus filter paper, and the unit is g; w2 is the weight of the filter paper, and the unit is g; v is the sampling amount of sludge or sewage, and the unit is mL.
Further, the addition amount in the third step is obtained according to the following formula:
the addition amount of the high-efficiency multifunctional sludge dewatering agent is obtained according to the following formula:
W＝ρ1×Vs
wherein W is the dosage of the high-efficiency multifunctional sludge dewatering agent, and the unit is kg; ρ1 is the concentration of the drug added according to the on-site beaker test, the unit is mg/L, and Vs is the sludgeThe actual storage capacity of the conditioning pool is expressed as m 3 。
The invention has the following beneficial effects:
1. the high-efficiency multifunctional sludge dewatering agent can realize the sludge dewatering of 99% of water content to below 60% in one step in common plate-and-frame filter pressing equipment, and can effectively treat a plurality of sludge such as municipal sludge, industrial sludge, river sludge, mine sludge and the like. The method is not only suitable for plate-and-frame filter pressing equipment, but also has good treatment effect on centrifugal dewatering equipment, and can further realize that sludge with the water content of 99% is dewatered to the water content of below 80% in one step.
2. The high-efficiency multifunctional sludge dewatering agent can solve the problems that the conventional sludge dewatering agent has the effect of increasing the sludge treatment effect, a large amount of agents and auxiliary additives are added, the preparation method is complex, and the requirements on site process conditions are high, and the economic burden of users is reduced. Therefore, the preparation method of the invention has the advantages of simplicity, low cost, less addition and good sludge treatment effect.
3. The efficient multifunctional sludge dewatering agent can be directly added under the condition of not changing the daily operation process of a user on site, is simple and convenient to operate, and can further save labor cost and operation cost of electric energy machinery.
4. The high-efficiency multifunctional sludge dewatering agent provided by the invention has the advantages that the water content of the sludge after being added in a plate-and-frame filter press dewatering process system can be reduced to below 60% in one step, and the water content of the sludge can be reduced to below 50% at the minimum, so that the high-efficiency multifunctional sludge dewatering agent plays a powerful role in the aspects of volume reduction and quantity reduction of the sludge and the later treatment of the sludge.
5. The invention relates to a composite preparation method of a high-efficiency multifunctional sludge dewatering agent, which is a compound synthesis method, and the preparation operation method is simple and is carried out at normal temperature and normal pressure. The raw materials of other components of the raw materials are rich in raw material sources, low in price, economical and environment-friendly. The raw materials are all commercial products which are convenient to obtain. The product is a gray yellow amorphous powdery or fine granular solid, has neutral pH and is easy to dissolve in water.
6. The application method of the high-efficiency multifunctional sludge dewatering agent has low use cost and good effect in large and medium-sized domestic sewage treatment, municipal sewage, industrial sewage and mixed sewage systems under the condition of not changing the prior process flow of users and not adding other auxiliary facilities. In the application treatment process, the comprehensive performance integrating eight characteristics of oxidization, adsorption, flocculation, precipitation, sterilization, disinfection, decoloration, deodorization and the like is more advantageous than the single treatment effect of the conventional sludge treatment agent.
Drawings
FIG. 1 shows a flow chart of a composite preparation method of a high-efficiency multifunctional sludge dewatering agent provided by the invention;
fig. 2 shows a flow chart of an application method of the high-efficiency multifunctional sludge dewatering agent.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The first aspect of the invention provides a high-efficiency multifunctional sludge dewatering agent, which comprises the following components: 5-25 parts of cationic polyacrylamide; 5-30 parts of inorganic polymeric flocculant; 10-30 parts of polymerized aluminum ferric diacid; 10-40 parts of calcium salt; 0.5-10 parts of carbonate; 5-25 parts of silicate; 10-25 parts of modified bentonite; 1-5 parts of magnetic powder.
The invention adds high-efficiency compound high-molecular polymer polymeric aluminum ferric sulfate (PAFCS) in the formula, which can greatly reduce the dosage and lower the cost compared with the traditional products, namely solid polyaluminum chloride PAC, liquid aluminum sulfate, liquid polyaluminum sulfate, polymeric ferric chloride and the like. Particularly, the water treatment problems of serious change of low turbidity and high turbidity water quality and difficult decolorization can reach the purification effect which cannot be solved by the existing water treatment agent. Can effectively remove the heavy metal and radioactive substance pollution in water, remove fluorine, and has certain sterilization, disinfection and decoloration capability. The inorganic mixed coagulation sedimentation agent has the high-efficiency net capturing and rolling sweeping effects of the polymeric flocculant, and can improve the treatment efficiency, reduce the water treatment cost and correspondingly improve the water quality after treatment compared with the traditional aluminum salt and ferric salt water purifying agents. The high-efficiency water purifying agent integrates the advantages of an aluminum salt system and an iron salt system, has high content of active ingredients, high basicity, high polymerization degree, dense molecular chain networks and huge structure, and has stronger adsorption and condensation capacity and better purification effect in the water quality purification process. The advantages are that: 1. easy dissolution, rapid formation of floccule in hydrolysis process, high activity and rapid sedimentation separation. 2. The additive has small dosage and low cost, and has better effect after being used in combination with other auxiliary agents such as a multi-polymer flocculant or polyacrylamide. 3. The pH value range is wide, and the adaptability to high-turbidity high-temperature water, low-turbidity low-temperature water and organic polluted water is strong, and the effect is good. 4. The new generation of inorganic efficient sludge dewatering agent has the advantages of high efficiency, high speed, low consumption, no toxicity, safety and the like, and can be widely applied to various sludge dewatering treatments and the like. 5. The method strengthens and widens the treatment energy efficiency of the conventional sewage treatment medicament, has wide application range and can meet the current user requirements under the condition of not changing the current process flow of the user and not adding large auxiliary facilities, and has wide development and popularization prospects.
Further, the inorganic polymeric flocculant is: one or more of polyaluminum chloride, polyaluminum sulfate, polyaluminum phosphate, polyaluminum ferric sulfate and polyaluminum ferric phosphate; the calcium salt is as follows: one or more of calcium chloride, calcium sulfate, calcium chlorate, calcium gluconate, calcium hypochlorite and calcium perchlorate; the carbonate is as follows: one or more of potassium carbonate, calcium carbonate, sodium carbonate, magnesium carbonate and aluminum carbonate; the silicate is as follows: one or more of calcium silicate, calcium aluminate and calcium aluminoferrite.
The invention also provides a composite preparation method of the high-efficiency multifunctional sludge dewatering agent, which is shown in figure 1 and specifically comprises the following four steps:
step one, preparing raw materials, wherein the raw materials comprise a raw material I, a raw material II and a raw material III;
the first raw material comprises inorganic polymeric flocculant, polymeric ferric aluminum and calcium salt; carbonate, silicate and modified bentonite;
the second raw material is cationic polyacrylamide;
the third raw material is magnetic powder;
firstly, opening a closed U-shaped negative pressure self-priming mixing stirrer, sequentially sucking 10-25 parts of modified bentonite, 5-25 parts of silicate, 10-40 parts of calcium salt, 0.5-10 parts of carbonate and 10-30 parts of polymerized aluminum ferric diacid into the mixing stirrer by using a negative pressure self-priming vacuum feeder, and starting the mixing stirrer to uniformly mix;
step three, adding 5-25 parts of cationic polyacrylamide in the raw material II into the step two, and continuously stirring and uniformly mixing;
and step four, adding 1-5 parts of magnetic powder in the raw material III into the step three, and continuously stirring and uniformly mixing to obtain the high-efficiency multifunctional sludge dewatering agent.
For example: firstly, preparing 4 groups of raw materials, and preparing the following raw materials in parts by weight:
group 1: 5-25 parts of cationic polyacrylamide; 5-30 parts of inorganic polymeric flocculant; 10-30 parts of polymerized aluminum ferric diacid; 10-40 parts of calcium salt; 0.5-10 parts of carbonate; 5-25 parts of silicate; 10-25 parts of modified bentonite; 1-5 parts of magnetic powder.
Group 2: 8-18 parts of cationic polyacrylamide; 8-28 parts of inorganic polymeric flocculant; 12.5-25.5 parts of polymeric aluminum ferric diacid; 12-35 parts of calcium salt; carbonate 0.8-8 parts; 8-20 parts of silicate; 12-22 parts of modified bentonite; 1.5-4.5 parts of magnetic powder.
Group 3: 10.5-22.5 parts of cationic polyacrylamide; 10-25 parts of inorganic polymeric flocculant; 15-27.5 parts of polymeric aluminum ferric diacid; 15-30 parts of calcium salt; 1.0-7.5 parts of carbonate; 8.5-18 parts of silicate; 15-25 parts of modified bentonite; 1.8-3.8 parts of magnetic powder.
Group 4: 11.5-23 parts of cationic polyacrylamide; 10.5-22.5 parts of inorganic polymeric flocculant; 12-28 parts of polymeric aluminum ferric diacid; 18-38 parts of calcium salt; 1.5-8.5 parts of carbonate; 10-20 parts of silicate; 12.5 to 22.5 portions of modified bentonite; 2-4 parts of magnetic powder.
One of the four groups is selected to start feeding: firstly, a closed negative pressure self-priming mixing stirrer is started, modified bentonite, silicate, calcium salt, carbonate, polymeric aluminum ferric diacid and a negative pressure self-priming vacuum feeder are sequentially used, the stirring is started by a suction stirrer to be uniformly mixed, then, cationic polyacrylamide is added to continue to be uniformly mixed, and then sampling, analysis and packaging are carried out. The high-efficiency multifunctional sludge dewatering agent is a green environment-friendly energy-saving product, and no three wastes are discharged in the production process.
The high-efficiency multifunctional sludge dewatering agent product is obtained by a compound preparation method, and the preparation operation method is simple and is carried out at normal temperature and normal pressure. The raw materials have rich sources of all components, low price, economy and environmental protection. The raw materials are all commercial products which are convenient to obtain. The product is a gray yellow amorphous powdery or fine granular solid, has neutral pH and is easy to dissolve in water.
When the device is used in large and medium-sized domestic sewage, municipal sewage, industrial sewage and mixed sewage systems, mud water is firstly fed into the mixed sewage and sludge system through the vibrating dosing equipment while the mud water is processed, and the mixed sewage and sludge system is fully mixed and reacted with the mud water, so that various reactions such as flocculation, chain breakage, wall breaking and the like are caused, and the purpose of reducing the volume and the quantity of the mud is achieved. The reacted sludge water automatically enters the sedimentation tank through gravity to overflow out a large amount of supernatant, so that the feeding working time of the subsequent plate-and-frame filter press and the consumption of electric energy and machinery are reduced. The sludge can also directly enter a plate-and-frame filter press from a sludge conveying pipe for filter pressing to carry out deep dehydration, the water content of a sludge cake after filter pressing on a machine is below 54 percent on average, and the volume of the treated sludge is reduced by more than 50 percent compared with the prior art. And simultaneously reduces the transportation cost and the later sludge disposal cost. Meanwhile, the product has the comprehensive properties of being integrated with eight characteristics of oxidization, adsorption, flocculation, precipitation, sterilization, disinfection, decoloration, deodorization and the like.
The invention also provides an application method of the high-efficiency multifunctional sludge dewatering agent, and the specific flow is shown in figure 2, and the application method comprises the following steps:
step one, calculating the actual storage capacity of a sludge or sewage conditioning tank;
step two, sampling and analyzing the concentration of the shift sludge or sewage on the same day;
step three, calculating the adding amount of the high-efficiency multifunctional sludge dewatering agent according to the concentration of the sludge or sewage and the actual storage data of the conditioning tank;
step four, according to the on-site treatment process, selecting a specific treatment mode, adding the high-efficiency multifunctional sludge dewatering agent, and treating sludge or sewage;
the treatment process comprises a plate and frame process and a centrifugal machine process;
when the method is applied to a plate-and-frame process, the high-efficiency multifunctional sludge dewatering agent is added into a sludge inlet of a sludge conditioning tank according to the on-site working condition, and the mixture is stirred for 20-40 minutes after the addition is finished and then directly enters a plate-and-frame filter press for filter pressing and dewatering;
when the efficient multifunctional sludge dewatering agent is applied to a centrifugal machine process, the efficient multifunctional sludge dewatering agent is directly dissolved into a solution in a dissolving tank, and then enters a mud conveying pipe through a dosing pipe and enters the centrifugal machine for centrifugal dewatering, wherein the concentration of the efficient multifunctional sludge dewatering agent solution is 3-5 per mill.
The data of the second step are obtained according to the following formula:
the concentration of the sludge or sewage is obtained according to the following formula:
ρ＝(W1-W2)×10 6 /V
wherein ρ is the concentration of sludge or sewage in mg/L; w1 is the weight of sludge plus filter paper, and the unit is g; w2 is the weight of the filter paper, and the unit is g; v is the sampling amount of sludge or sewage, and the unit is mL.
The addition amount of the high-efficiency multifunctional sludge dewatering agent is obtained according to the following formula:
W＝ρ1×Vs
wherein W is the dosage of the high-efficiency multifunctional sludge dewatering agent, and the unit is kg; ρ1 is the concentration of the drug added according to the on-site beaker test, the unit is mg/L, and Vs is the sludgeThe actual storage capacity of the conditioning pool is expressed as m 3 。
Application example one:
1. the method is characterized in that the field box type diaphragm plate-and-frame filter press is combined to carry out sludge dewatering on surplus sludge and mixed sludge in a plate-and-frame dewatering workshop of a Hexi reclaimed water plant in Beijing Fengtai district, and physical and chemical performance evaluation verification is carried out on a high-efficiency multifunctional sludge dewatering agent (hereinafter referred to as a treating agent). On the premise of not influencing the normal running production of a sewage plant and ensuring the normal water quality of the effluent, the optimal agent use concentration is determined by taking the technological parameter data of the original sewage plant system as the basis and adopting a mode of casting a high-efficiency multifunctional sludge dewatering agent through on-site beaker experimental results.
2. Sludge dewatering agent: high-efficiency multifunctional sludge dewatering agent, neutral pH value, easy operation, energy conservation, high efficiency and small dosage.
3. The main equipment comprises: the user field process is using a box-type diaphragm plate-and-frame filter press, mechanical dosing equipment, etc.
4. The application method comprises the following steps: according to the requirements of a reclaimed water factory, 200kg of high-efficiency multifunctional sludge dewatering agent is provided. Directly adding the high-efficiency multifunctional sludge dewatering agent into a feed inlet of a sludge conditioning tank, stirring for 20-40 minutes with the addition amount of 90-550mg/L, and then entering a partition mode plate-and-frame filter press to squeeze out sludge, wherein the sludge is treated by directly adding the high-efficiency multifunctional sludge dewatering agent into solid. The treated sludge is analyzed and tested for sludge dewatering rate.
5. Water quality of inlet and outlet water-see Table 1 below
Table 1 units: mg/L (unless noted otherwise)
| Sequence number | Basic control items | A standard | B standard | Inflow of water | Effluent water |
| 1 | PH/dimensionless | 6-9 | 6-9 | 7.91 | 7.99 |
| 2 | Chemical Oxygen Demand (COD) | 50 | 60 | ≤450 | 11.00 |
| 3 | Biochemical Oxygen Demand (BOD) 5 | 10 | 20 | ≤230 | 5.0 |
| 4 | Suspension (SS) | 10 | 20 | ≤300 | 2.50 |
| 5 | Total nitrogen (in N) | 15 | 20 | ≤55 | 9.8 |
| 6 | Ammonia nitrogen (calculated as N) | 5(8) | 8(15) | ≤40 | 1.08 |
| 7 | Total phosphorus (in P) | 0.5 | 1 | ≤6 | 0.30 |
| 8 | Flow m 3 /h | 2100 | 1890 | ||
| 9 | Water temperature (DEG C) | 26 | 28 | ||
| 10 | PH | 7.91 | 7.99 |
(1) High-efficiency multifunctional sludge dewatering agent operation process equipment parameters-see table 2 below
TABLE 2
(2) And (3) adding high-efficiency multifunctional sludge dewatering agent to process analysis data: the pharmaceutical agents are shown in Table 3 below
TABLE 3 Table 3
Conclusion of application example one of high-efficiency multifunctional sludge dewatering agent Hexi regeneration water plants in Beijing Fengtai district:
(1) The analysis data in the table 1 after the sewage of the reclaimed water plant is dehydrated by adding the high-efficiency multifunctional sludge dehydrating treatment agent series can show that the effluent of the water plant reaches the first-level A standard requirement of the pollutant emission standard of the urban sewage plant GB18918-2002, and the first-level B standard of the pollutant emission standard of the urban sewage plant GB18918-2002 is shown in the table 1.
(2) As can be seen from the analysis data in tables 2 and 3 after the high-efficiency multifunctional sludge dewatering agent series products are added for treatment, the water content of the sludge after being squeezed by combining mechanical dosing equipment and a box-type diaphragm plate-and-frame filter press is 49.70% under the condition that the sludge concentration of the high-efficiency multifunctional sludge dewatering agent is 8000mg/L-12000mg/L and the lower adding concentration (139.27 ppm). Compared with the prior process agent, the dehydration rate is reduced by more than 10 percent, the volume and the quantity of the sludge are reduced by 30 percent, and the disposal cost of the sludge in the later stage is greatly saved.
Application example two:
1. basic introduction: the high-efficiency multifunctional sludge dewatering agent is used for carrying out sludge dewatering operation in a plate and frame dewatering workshop of a south-pass second sewage treatment plant, conditioning sewage and sludge on site in a mode of directly adding the high-efficiency sewage treatment agent, determining the optimal agent concentration using range, carrying out filter pressing on the treated sludge to obtain sludge, and testing the dewatering rate of a sludge cake.
2. Sludge dewatering agent: high-efficiency multifunctional sludge dewatering agent.
3. The main equipment comprises: in-situ process chamber type diaphragm plate-frame filter press.
4. Determining the dosing concentration of the medicament: the sludge concentration before entering the conditioning tank plate-and-frame filter press on the same day is as follows: 35574mg/L. The volume of the sludge conditioning tank was=126 m 3 . And determining that the dosing concentration of the medicament is 350ppm through an on-site beaker experiment.
5. The application method comprises the following steps: firstly, adding 30ppm of potassium ferrate into a sludge inlet of a sludge conditioning tank, simultaneously feeding sludge, and stirring to react for 30 minutes after the conditioning tank is full. Under the condition of not changing the daily operation production process of a plate-and-frame dehydration workshop, the high-efficiency multifunctional sludge dehydration treatment agent is directly added with 350ppm for mixing and stirring reaction for 20-40 minutes, and the treated sludge is put into a plate-and-frame filter press for machine pressing, and then the water content of a mud cake is sampled and measured.
The water content test results are shown in table 4:
TABLE 4 Table 4
6. Application examples of the high-efficiency multifunctional sludge dewatering agent south-pass second sewage treatment plant two conclusions:
the efficient multifunctional sludge dewatering agent is used for treating the sludge on the application site, can meet the requirements of the current user on the dewatering water content of the sludge under the conditions of no lime addition and no external sludge conveying amount, has the advantages of good composition compatibility, simple preparation method, environment friendliness, no pollution to the environment, capacity reduction, time and labor saving, safe and convenient addition and use, and simultaneously saves the cost of labor, mechanical energy and the like.
Application example three:
1. basic introduction: the high-efficiency multifunctional sludge dewatering agent is used for sludge dewatering operation in a 3# centrifuge of a sludge dewatering workshop of a Zhangzhou east pier sewage treatment plant.
2. A sludge dewatering agent; high-efficiency multifunctional sludge dewatering agent.
3. The main equipment comprises: a centrifugal dehydrator.
4. The application method comprises the following steps: and dissolving the high-efficiency multifunctional sludge dewatering agent into 3 per mill mixed solution and muddy water in a dosing tank, feeding the muddy water into a centrifugal machine for dewatering, and sampling to measure the water content of the muddy water.
The operating parameters are shown in table 5:
TABLE 5
(note: in the above table, the numbers 1, 2, 3 are the first group of agents, and the numbers 4, 5, 6 are the second group of agents).
5. Application example of the high-efficiency multifunctional sludge dewatering agent in Zhangzhou east pier sewage treatment plants has three conclusions:
the high-efficiency multifunctional sludge dewatering agent is used for treating the sludge on the application site, and the sludge dewatering is realized to be below 80% in one step on high-speed centrifugal equipment. The preparation method has the advantages of less dosage, large treatment capacity, good compatibility of components, simple preparation method, environmental protection, no pollution to the environment, safe and convenient addition and use, good effect, and simultaneously saving the cost of labor, mechanical energy and the like.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (10)
1. The efficient multifunctional sludge dewatering agent is characterized by comprising the following components in parts by weight: 5-25 parts of cationic polyacrylamide; 5-30 parts of inorganic polymeric flocculant; 10-30 parts of polymerized aluminum ferric diacid; 10-40 parts of calcium salt; 0.5-10 parts of carbonate; 5-25 parts of silicate; 10-25 parts of modified bentonite; 1-5 parts of magnetic powder.
2. The efficient multifunctional sludge dewatering agent according to claim 1, wherein the inorganic polymeric flocculant is: one or more of polyaluminum chloride, polyaluminum sulfate, polyaluminum phosphate, polyaluminum ferric sulfate and polyaluminum ferric phosphate.
3. The efficient multifunctional sludge dewatering agent according to claim 1, wherein the calcium salt is: one or more of calcium chloride, calcium sulfate, calcium chlorate, calcium gluconate, calcium hypochlorite and calcium perchlorate.
4. The efficient multifunctional sludge dewatering agent according to claim 1, wherein the carbonate is: potassium carbonate, calcium carbonate, sodium carbonate, magnesium carbonate, aluminum carbonate, or a mixture of one or more of them.
5. The efficient multifunctional sludge dewatering agent according to claim 1, wherein the silicate is: one or more of calcium silicate, silicon dioxide, dicalcium silicate and tricalcium silicate.
6. The composite preparation method of the efficient multifunctional sludge dewatering agent is characterized by comprising the following steps of:
step one, preparing raw materials, wherein the raw materials comprise a raw material I, a raw material II and a raw material III;
wherein the raw material I comprises 5-30 parts of inorganic polymeric flocculant, 10-30 parts of polymeric aluminum ferric diacid and 10-40 parts of calcium salt; 0.5-10 parts of carbonate, 5-25 parts of silicate and 10-25 parts of modified bentonite; 5-25 parts of cationic polyacrylamide as a raw material II; 1-5 parts of magnetic powder;
opening a closed negative pressure self-priming mixing stirrer, and sequentially sucking the modified bentonite, silicate, calcium salt, carbonate and polymerized aluminum ferric diacid in the raw material I into the mixing stirrer by using a negative pressure self-priming vacuum feeder, and simultaneously starting to uniformly mix and stir;
step three, adding the raw material II into the step two, and continuously stirring and uniformly mixing;
and step four, adding the raw material III into the step three, continuously stirring and uniformly mixing to obtain the high-efficiency multifunctional sludge dewatering agent.
7. The application method of the high-efficiency multifunctional sludge dewatering agent is characterized by comprising the following steps of:
step one, calculating the actual storage capacity of a sludge or sewage conditioning tank;
step two, sampling and analyzing the concentration of the shift sludge or sewage on the same day;
step three, calculating the adding amount of the high-efficiency multifunctional sludge dewatering agent according to the concentration of the sludge or sewage and the actual storage data of the conditioning tank;
and step four, selecting a specific treatment mode according to an on-site treatment process, and adding the high-efficiency multifunctional sludge dewatering agent to treat sludge or sewage.
8. The application method of the efficient multifunctional sludge dewatering agent according to claim 7, wherein the concentration of the sludge or sewage is obtained according to the following formula:
ρ＝(W1-W2)×10 6 /V
wherein ρ is the concentration of sludge or sewage; w1 is the weight of the sludge and the filter paper; w2 is the weight of the filter paper; v is the sampling amount of the sludge or the sewage.
9. The application method of the efficient multifunctional sludge dewatering agent according to claim 7, wherein the addition amount of the efficient multifunctional sludge dewatering agent is obtained according to the following formula:
W＝ρ1×Vs
wherein W is the dosage of the high-efficiency multifunctional sludge dewatering agent; ρ1 is the concentration of the agent dosed according to the on-site beaker test, vs is the actual storage of the sludge conditioning pond.
10. The application method of the high-efficiency multifunctional sludge dewatering agent according to any one of claims 7 to 9, which is characterized in that,
the treatment process comprises a plate and frame process and a centrifugal machine process;
when the method is applied to a plate-and-frame process, the high-efficiency multifunctional sludge dewatering agent is added into a sludge inlet of a sludge conditioning tank according to the on-site working condition, and the mixture is stirred for 20-40 minutes after the addition is finished and then directly enters a plate-and-frame filter press for filter pressing and dewatering;
when the efficient multifunctional sludge dewatering agent is applied to a centrifugal machine process, the efficient multifunctional sludge dewatering agent is directly dissolved into a solution in a dissolving tank, and then enters a sludge conveying pipe through a dosing pipe and enters a centrifugal machine for centrifugal dewatering; the concentration of the high-efficiency multifunctional sludge dewatering agent solution is 3-5 per mill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211551939.8A CN116062969A (en) | 2022-12-05 | 2022-12-05 | High-efficiency multifunctional sludge dewatering agent, composite preparation method and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211551939.8A CN116062969A (en) | 2022-12-05 | 2022-12-05 | High-efficiency multifunctional sludge dewatering agent, composite preparation method and application method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116062969A true CN116062969A (en) | 2023-05-05 |
Family
ID=86179447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211551939.8A Pending CN116062969A (en) | 2022-12-05 | 2022-12-05 | High-efficiency multifunctional sludge dewatering agent, composite preparation method and application method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116062969A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107686225A (en) * | 2017-09-05 | 2018-02-13 | 神美科技有限公司 | A kind of compound type sludge conditioner for sludge dewatering |
| US20200230589A1 (en) * | 2019-01-18 | 2020-07-23 | Korea Institute Of Science And Technology | Metal single-atom catalyst and method for preparing the same |
-
2022
- 2022-12-05 CN CN202211551939.8A patent/CN116062969A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107686225A (en) * | 2017-09-05 | 2018-02-13 | 神美科技有限公司 | A kind of compound type sludge conditioner for sludge dewatering |
| US20200230589A1 (en) * | 2019-01-18 | 2020-07-23 | Korea Institute Of Science And Technology | Metal single-atom catalyst and method for preparing the same |
Non-Patent Citations (1)
| Title |
|---|
| 廖权昌等: "《给水处理理论与工艺》", 哈尔滨工业大学出版社, pages: 244 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102992553B (en) | Method for comprehensively treating and utilizing dissolving pulp black liquor | |
| CN102775019B (en) | Coupling type sewage de-phosphorization purification regeneration treatment technique | |
| CN107285566B (en) | Urban domestic sewage treatment method | |
| CN101306849A (en) | Modification process of fly ash zeolite and wastewater treatment process for paper making | |
| CN101596444B (en) | High-efficiency decolorizing treatment agent for industrial waste water and preparation method thereof | |
| CN106745467A (en) | One kind compounding water purification agent and its component are prepared and method for purifying water | |
| CN102464420B (en) | Sewage physical-chemical treatment method | |
| CN105906164A (en) | Method for removing ammonia nitrogen in waste water | |
| CN111484115A (en) | Novel sewage phosphorus removal agent and preparation and application methods thereof | |
| CN101973683A (en) | Method for recycling sludge | |
| CN101665279B (en) | Preparation method of flocculating agent for removing phosphor with low concentration in water | |
| CN105800909B (en) | Sludge condensation and deep dehydration medicament and its sludge condensation and deep dehydration method | |
| CN105016444A (en) | Efficient sewage treating agent and method for treating sewage by using same | |
| CN113998840A (en) | Full-quantitative treatment method for percolate of domestic garbage landfill | |
| CN109264942A (en) | The low increasing of sludge is than solid biologic environment-friendlyconditioner conditioner | |
| CN105036218A (en) | Environment-friendly sewage treatment agent and preparation method thereof | |
| CN105384322A (en) | Sludge drying and sewage treatment method | |
| CN104402271A (en) | Denuded particle crystal seed modification method for utilizing sludge in dry-process rotary kiln | |
| CN111620539A (en) | Deep dehydration tempering method for sludge | |
| CN101665278A (en) | Compound phosphorus removal flocculating agent for water treatment | |
| CN106673400A (en) | Sludge dewatering conditioner and application thereof in dewatering | |
| CN116062969A (en) | High-efficiency multifunctional sludge dewatering agent, composite preparation method and application method thereof | |
| CN216764640U (en) | Red mud leachate biochemical treatment system | |
| CN102583844A (en) | Operation method for treating garbage incineration plant leachate and urban sewage in combined mode | |
| CN113511771B (en) | High-concentration landfill leachate membrane concentrated solution treatment process and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 246500 Intersection of Xiaohe Road and Zhenxing Avenue, Susong County Economic Development Zone, Anqing, Anhui Province Applicant after: ZHONG'AN ZHICHUANG ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Address before: 246500 Intersection of Xiaohe Road and Zhenxing Avenue in Economic Development Zone, Suzhou City, Anhui Province Applicant before: ZHONG'AN ZHICHUANG ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. |