CN107522250B - Filtering decolorant produced by oil-containing sludge and manufacturing method thereof - Google Patents
Filtering decolorant produced by oil-containing sludge and manufacturing method thereof Download PDFInfo
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- CN107522250B CN107522250B CN201710844946.XA CN201710844946A CN107522250B CN 107522250 B CN107522250 B CN 107522250B CN 201710844946 A CN201710844946 A CN 201710844946A CN 107522250 B CN107522250 B CN 107522250B
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- China
- Prior art keywords
- powder
- oily sludge
- filtering
- decolorant
- temperature
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- Expired - Fee Related
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- 239000010802 sludge Substances 0.000 title claims abstract description 106
- 238000001914 filtration Methods 0.000 title claims abstract description 63
- 239000003712 decolorant Substances 0.000 title claims abstract description 39
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 81
- 239000010881 fly ash Substances 0.000 claims abstract description 72
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 30
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims abstract description 28
- 238000002156 mixing Methods 0.000 claims abstract description 24
- 238000004806 packaging method and process Methods 0.000 claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 18
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims abstract description 15
- 239000000292 calcium oxide Substances 0.000 claims abstract description 15
- 235000012255 calcium oxide Nutrition 0.000 claims abstract description 15
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims abstract description 15
- 239000011790 ferrous sulphate Substances 0.000 claims abstract description 14
- 235000003891 ferrous sulphate Nutrition 0.000 claims abstract description 14
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 14
- 230000009471 action Effects 0.000 claims abstract description 9
- 238000003860 storage Methods 0.000 claims abstract description 9
- 238000005303 weighing Methods 0.000 claims abstract description 9
- 238000012216 screening Methods 0.000 claims abstract description 8
- 239000002131 composite material Substances 0.000 claims abstract description 7
- 238000000227 grinding Methods 0.000 claims abstract description 5
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims abstract 3
- 239000010865 sewage Substances 0.000 claims description 39
- 238000000034 method Methods 0.000 claims description 31
- 239000002245 particle Substances 0.000 claims description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 238000011282 treatment Methods 0.000 claims description 25
- 239000002351 wastewater Substances 0.000 claims description 21
- 239000003795 chemical substances by application Substances 0.000 claims description 20
- 239000000126 substance Substances 0.000 claims description 20
- 230000008569 process Effects 0.000 claims description 19
- 239000003921 oil Substances 0.000 claims description 17
- 239000002956 ash Substances 0.000 claims description 13
- 239000003245 coal Substances 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 12
- 239000010779 crude oil Substances 0.000 claims description 9
- 238000005189 flocculation Methods 0.000 claims description 8
- 230000016615 flocculation Effects 0.000 claims description 8
- 238000005188 flotation Methods 0.000 claims description 8
- 239000010842 industrial wastewater Substances 0.000 claims description 8
- 239000003208 petroleum Substances 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 7
- 239000002893 slag Substances 0.000 claims description 6
- 239000002957 persistent organic pollutant Substances 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 4
- 238000007885 magnetic separation Methods 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 239000000725 suspension Substances 0.000 claims description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 3
- 235000019738 Limestone Nutrition 0.000 claims description 3
- 238000001354 calcination Methods 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 239000000428 dust Substances 0.000 claims description 3
- 239000003546 flue gas Substances 0.000 claims description 3
- 239000006028 limestone Substances 0.000 claims description 3
- 238000007670 refining Methods 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 8
- 238000003756 stirring Methods 0.000 abstract description 8
- 238000007689 inspection Methods 0.000 abstract description 6
- 230000009467 reduction Effects 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 4
- 229910052799 carbon Inorganic materials 0.000 abstract description 3
- 238000011161 development Methods 0.000 abstract description 3
- 238000004134 energy conservation Methods 0.000 abstract description 3
- 239000002910 solid waste Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 28
- 238000001179 sorption measurement Methods 0.000 description 26
- 239000000047 product Substances 0.000 description 20
- SURQXAFEQWPFPV-UHFFFAOYSA-L iron(2+) sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Fe+2].[O-]S([O-])(=O)=O SURQXAFEQWPFPV-UHFFFAOYSA-L 0.000 description 12
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 11
- 239000011737 fluorine Substances 0.000 description 11
- 229910052731 fluorine Inorganic materials 0.000 description 11
- 238000011160 research Methods 0.000 description 8
- 229910052782 aluminium Inorganic materials 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000011651 chromium Substances 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 5
- 239000003570 air Substances 0.000 description 5
- 238000005345 coagulation Methods 0.000 description 5
- 230000015271 coagulation Effects 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 5
- 229910001385 heavy metal Inorganic materials 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- -1 asphaltene Substances 0.000 description 4
- 239000000701 coagulant Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 239000011574 phosphorus Substances 0.000 description 4
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 3
- 239000002156 adsorbate Substances 0.000 description 3
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 description 3
- 239000004927 clay Substances 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000004042 decolorization Methods 0.000 description 3
- 239000000975 dye Substances 0.000 description 3
- 238000004043 dyeing Methods 0.000 description 3
- 238000009713 electroplating Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000008394 flocculating agent Substances 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 229910052785 arsenic Inorganic materials 0.000 description 2
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 238000004939 coking Methods 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 235000010755 mineral Nutrition 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- SJEYSFABYSGQBG-UHFFFAOYSA-M Patent blue Chemical compound [Na+].C1=CC(N(CC)CC)=CC=C1C(C=1C(=CC(=CC=1)S([O-])(=O)=O)S([O-])(=O)=O)=C1C=CC(=[N+](CC)CC)C=C1 SJEYSFABYSGQBG-UHFFFAOYSA-M 0.000 description 1
- 239000000980 acid dye Substances 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 229940037003 alum Drugs 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 150000001454 anthracenes Chemical class 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 239000003899 bactericide agent Substances 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 150000001555 benzenes Chemical class 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 239000000982 direct dye Substances 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 239000003623 enhancer Substances 0.000 description 1
- 229910001447 ferric ion Inorganic materials 0.000 description 1
- 239000010797 grey water Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000011221 initial treatment Methods 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000000320 mechanical mixture Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 239000000985 reactive dye Substances 0.000 description 1
- 239000002455 scale inhibitor Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000012265 solid product Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 239000010918 textile wastewater Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 239000000984 vat dye Substances 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 229910000859 α-Fe 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention relates to a filtering decolorant produced by oily sludge and a manufacturing method thereof, which is characterized in that the oily sludge is adopted, the oily sludge is prepared into powder and raw materials of fly ash, quicklime, calcium sulfate, polyaluminium ferric chloride and ferrous sulfate after high-temperature incineration, crushing, sorting, grinding and screening, a double-shaft paddle mixing stirrer is adopted for mixing and stirring, so that the materials are subjected to mechanical action in a machine body to generate comprehensive composite circulation, and the comprehensive circulation is widely staggered without dead angles, thereby achieving the purpose of uniformly diffusing, mixing and filtering the decolorant; then conveying the uniformly mixed filtering decolorant to a special storage silo, and packaging by adopting a full-automatic electronic metering weighing packaging machine system to prepare a filtering decolorant product; the product reaches the national industry standard through inspection; the product comprehensively utilizes solid waste resources, changes waste into valuable, turns harm into benefit, has no pollution, low cost and good benefit, and meets the national requirements of energy conservation, emission reduction, ecological environment protection and low-carbon economy development.
Description
Technical Field
The invention relates to a filtering and decolorizing agent produced by oily sludge, in particular to a filtering and decolorizing agent produced by taking powder and fly ash of oily sludge after dehydration, high-temperature incineration, crushing, magnetic separation, sorting, grinding and screening as main raw materials, belonging to the field of waste treatment.
The invention also relates to a preparation method of the filtering decolorant.
Background
The oily sludge is the industrial wastewater generated in the petroleum refining process of a petrochemical refinery, the electroplating wastewater, the oily wastewater and the domestic sewage generated in the petroleum mechanical processing process, the activated sludge generated after the treatment by adopting the methods of flotation, filtration, flocculation and chemistry is carried out by a sewage treatment plant is combined with the oily sludge of the bottom mud of a crude oil separation tank, the scum of a flotation tank, the bottom mud of a crude oil tank and the like, the components of the sludge are complex, the oil content in the sludge is generally 10-30%, the water content is 50-99%, in the petrochemical industry of China, 80-100 million tons of tank bottom mud and tank bottom mud are generated each year on average, the components of the sludge are complex, and the sludge contains a large amount of aged crude oil, wax, asphaltene, colloid, solid suspended matters, bacteria, salts, acidic gases and corrosion products, and a large amount of coagulant is also added in the sewage treatment process, Sewage treatment agents such as flocculants, corrosion inhibitors, scale inhibitors, bactericides and the like, which contain benzene series, phenols, anthracenes and other substances, are accompanied by malodor and toxicity, and generally consist of oil-in-water (O/W), water-in-oil (W/O) and suspended solids; suspended solids and colloidal particles in the oily sludge form a very stable emulsification system with oil and water, the oily sludge has high viscosity and is difficult to settle, the oily sludge has large volume, and if the oily sludge is not treated and directly buried, a large amount of cultivated land is occupied, and the environmental pollution is caused to the surrounding soil, water and air; and harmful components therein such as heavy metals; copper, chromium, arsenic, mercury, cadmium, lead, nickel, zinc, pathogenic bacteria, parasitic ova, organic pollutants and odor become a great public nuisance which affects the urban environmental sanitation, governments of all levels and related departments actively seek effective treatment technologies, and the treatment method of oily sludge in China at present mainly adopts a landfill method to treat so as to reduce the pollution to the ecological environment; how to properly and scientifically treat the oily sludge to achieve reduction, stabilization, harmlessness and reclamation becomes a large research topic which is widely concerned by scientific and technical personnel in China and even the world environment; at present, the research has newly developed the treatment method of the oily sludge, realizes the resource comprehensive utilization of the oily sludge, utilizes the incineration ash residue of the oily sludge to produce the filtering decolorant, fully utilizes the useful components of the oily sludge, and thoroughly solves the pollution problem of the oily sludge to the ecological environment.
Disclosure of Invention
The invention aims to solve the problems and provide the filtering decolorant produced by using the oil-containing sludge and the fly ash as main raw materials, thereby solving the problem of environmental pollution caused by the oil-containing sludge and the fly ash, also solving the problem of resource recycling of the oil-containing sludge and the fly ash, changing waste into valuable and beneficial to chemical industry, and realizing the virtuous resource recycling of solid wastes.
The invention also provides a preparation method of the oily sludge filtering and decolorizing agent.
The invention aims to realize the effect through the following technical scheme;
a filtering decolorant produced by oily sludge is characterized by being prepared from the following raw materials in parts by weight:
58-78 parts of oily sludge incineration ash powder
33-45 parts of fly ash powder
15-28 parts of quicklime powder
3-6 parts of calcium sulfate powder
5-8 parts of polyaluminum ferric chloride
8-12 parts of ferrous sulfate
The oily sludge is industrial wastewater generated in the process of processing and refining petroleum by an oil refinery, wastewater generated in the process of processing petroleum machinery, oily wastewater and domestic sewage, and the water content is generally 93-99 percent by the combination of activated sludge generated after the activated sludge, crude oil separation tank bottom mud, flotation tank scum, crude oil tank bottom mud and various oily sludge which are processed by adopting flotation, filtration, flocculation and chemical methods in a sewage treatment plant; mechanically dewatering until the water content is below 80%, and burning the oily sludge at high temperature by adopting a full-automatic mechanical dynamic double-cylinder rotary kiln; with screw conveyer, carry oily sludge to kiln tail feeding entry, make oily sludge can enter into the kiln automatically, along with the rotation of the kiln body, oily sludge slowly passes through kiln body drying area, wherein: the rotating speed of the kiln body is 2.0-2.6/min, the drying temperature is 220-250 ℃, and the drying time is 30 min; entering a preheating incineration area, wherein the preheating temperature is 350-400 ℃, and the time is 30-35 min; and (3) entering a high-temperature incineration area, wherein the rotating speed of a kiln body is 2.8-4.0/min, and the incineration temperature is controlled to be a temperature suitable for the oily sludge incineration slag to form small particles: the temperature is 750-950 ℃, and the time is controlled to be 30-40 min; organic pollutants with too low temperature are not completely combusted, malodorous gas is easily formed, the environment is polluted, the temperature is too high, oily sludge incineration slag is easily agglomerated into large blocks, the formation of small particles is not facilitated, the investment of crushing equipment and a crushing process flow is required to be increased, and the production cost cannot be effectively reduced; therefore, the requirement on the incineration temperature of the oily sludge is strict, and after the oily sludge powder which is incinerated at high temperature and discharged from the kiln is cooled, the oily sludge powder is screened by adopting a multistage vibrating screen to prepare the powder with the particle size of less than 0.045 mm.
The fly ash powder is a volcanic ash-like mixed material formed by high-temperature combustion of coal powder; coal is ground into coal powder with the particle size of less than 100 microns by a thermal power plant, preheated air is sprayed into a hearth to be combusted in a suspension state, high-temperature flue gas mixed with a large amount of non-combustible substances is generated, and the coal powder is collected by a dust collecting device to obtain fly ash; magnetic separation, drying and screening are carried out to prepare powder with the particle size of less than 0.045 mm.
The quick lime powder is prepared by calcining limestone at high temperature, crushing, sorting, crushing, grinding and screening to obtain powder with the particle size of less than 0.045 mm.
The preparation method of the filtering decolorant produced by the oily sludge is characterized by comprising the following steps:
58-78 parts by weight of oily sludge incineration ash powder, 33-45 parts by weight of fly ash powder, 15-28 parts by weight of quick lime powder, 3-6 parts by weight of calcium sulfate powder, 5-8 parts by weight of polyaluminum ferric chloride and 8-12 parts by weight of ferrous sulfate are mixed and stirred by a double-shaft paddle mixing stirrer, so that the materials are subjected to mechanical action in a machine body to generate comprehensive composite circulation and are widely staggered without dead angles, and the aim of uniformly diffusing, mixing, filtering and decolorizing agents is fulfilled; and then conveying the uniformly mixed filtering decolorant powder to a special storage silo, and packaging by adopting a full-automatic electronic metering weighing packaging machine system to prepare a filtering decolorant product.
The filtering decolorant produced by the oily sludge is characterized in that the crushed powder of the calcium sulfate has the particle size of less than 0.045 mm.
The invention adopts the oily sludge as the main raw material of the filtering decolorant, and because the sewage treatment plant adds the sewage treatment agent mainly comprising lime water in order to solve the corrosion problem of the oily sewage in the process of treating the oily sewage, the invention generatesA large amount of oily calcium carbonate sludge with fine and ordinary particles<200 meshes; consists of oil-in-water (O/W), water-in-oil (W/O) and suspended solids; suspended solids and colloidal particles in the sludge form a very stable emulsifying system with oil and water, the viscosity is high, the sedimentation is difficult, and the oil content in the sludge is generally 10-30%; therefore, the powder can be burnt by itself to form small-particle powder in the burning process; according to the research results of the characteristics of chemical components and mineral components and the theoretical chemistry of the filtering decolorant and the theoretical damage mechanism of the strength of the high polymer material, the small-particle powder formed by burning the oily sludge is researched, analyzed and demonstrated, and the mineral composition of the small-particle powder is basically CaCO3The oily sludge mainly contains a certain amount of silicon, aluminum, magnesium, barium, calcium, zinc, iron and the like, and the oily sludge belongs to the matching range of filtering decolorants no matter the oily sludge exists in the form of carbonate, sulfate or oxide, and particularly belongs to the main source of the decolorants; due to SiO2、Al2O3Is a good decolorizing agent per se, commonly called white carbon black and Al2O3With SiO2The combination can form aluminosilicate, which belongs to the main composition of pottery clay, and pottery clay takes clay mineral as main material, and some substances, such as ZnO and MgO, have vulcanization activity; the sulfate in the sludge is mainly calcium sulfate, can be used as a vulcanizing agent to enable the lipophilicity of the sludge to be better than that of calcium carbonate, can improve the quality of a filtering and decoloring product, and the ferric oxide in the oily sludge can also enhance the decoloring effect in the filtering process.
The invention selects the fly ash as the raw material of the filtering decolorant, and mainly utilizes the adsorption effect of the fly ash and the effects of flocculation precipitation and filtering interception; the adsorption effect of the fly ash comprises physical adsorption and chemical adsorption, wherein the physical adsorption means that the adsorption is generated between the fly ash and pollutant molecules of an adsorbate through intermolecular attraction, and the effect is determined by the porosity and the specific surface area of the fly ash; chemical adsorption, which means that the fly ash contains a large amount of active ingredients of aluminum, iron and silicon, and can strongly adsorb a plurality of negatively charged colloidal particles in sewage to generate flocculation; in addition, the fly ash contains coagulant aids, such as nickel, cobalt, arsenic, sodium, lithium and calcium, so that the sedimentation of the fly ash can be promoted; the chemical adsorption is characterized by strong selectivity, and under the common condition, the physical adsorption and the chemical adsorption exist at the same time, but the advantages of the physical adsorption and the chemical adsorption are different under different conditions of pH value and temperature, so that the adsorption performance of the fly ash is changed; in addition, as the fly ash is a mechanical mixture of various particles and has high porosity, when sewage passes through the fly ash, the fly ash can filter and retain most suspended matters;
the main influence factors of the fly ash in sewage treatment include the following aspects: (1) the fly ash has small particle size fineness and large specific surface area, the finer the particle size of the fly ash is, the larger the specific surface area is, and the better the sewage treatment effect is; (2) the chemical components of the fly ash are as follows: the content of active substances of SiO and A1O in the fly ash is high, which is beneficial to chemical adsorption; (3) pH of the solution: the pH value directly influences the treatment effect of the sewage, but the influence result of the pH value is related to the property of the adsorbate; (4) temperature: research shows that the lower the temperature is, the higher the removal rate of the harmful substances in the sewage by the fly ash is; (5) the nature of the adsorbate: the solubility, molecular polarity, molecular weight and concentration of the sewage pollutants have influence on the sewage treatment effect; the larger the molecular weight and the smaller the solubility, the better the treatment effect.
Application of fly ash in filtering and decoloring
1 decolorization treatment
The fly ash has strong adsorption capacity and good removal effect on the chroma, so the fly ash is widely applied to removal of the chroma of industrial wastewater; experiments show that the printing and dyeing textile wastewater and the boiler wastewater are mixed with the mixture of the fly ash and the water for sewage treatment, the chroma removal rate is up to 95%, the fly ash is used for replacing a flocculating agent to carry out primary treatment on the sewage of a paper mill, experiments show that after the same sewage is treated by the fly ash, the light transmittance can achieve the same effect as that of treating the sewage by using aluminum trichloride, polymeric aluminum and polymeric iron, and the sewage treated by the fly ash is colorless and odorless; a systematic research and test are carried out on the decolorizing capacity of the fly ash, the decolorizing rate is determined to be 91-99% by utilizing the decolorizing capacity of the fly ash to reactive dyes, acid dyes, direct dyes, cationic dyes, hydrophobizing dyes and vat dyes, and the adsorption capacity of the fly ash to the dyes is proved.
2 removal of organic contaminants
The fly ash has better treatment effect on organic pollutants and SS in various sewage; the adsorption treatment test of the supernatant of the domestic sewage shows that the fly ash has stronger adsorption effect on COD in the domestic sewage, and when the ash-water ratio is 1: when 10 hours, the average removal rate of the fly ash to COD in the sewage reaches more than 86 percent; the fly ash is used for adsorbing the coking wastewater, the treated water amount is 1000 t/h, the using amount of the fly ash is 1.747 t/h, the removal rates of COD and BOD in the coking wastewater both reach the national first-level discharge standard, and the purified water quality is better.
3 removal of heavy metal ions
Research shows that the fly ash has better adsorption effect on some heavy metals, and the adsorption removal rate is between 40 and 98 percent; the pH value has certain influence on the effect of adsorbing heavy metal ions by the fly ash, and the proper pH value is 4-7; the fly ash is used as a main component to treat the Cr-containing wastewater, 1 t of wastewater with the Cr content of 30.8 mg/L and the pH value of = 4.00 is treated, the concentration of Cr3+ is reduced to below 1 mg/L only by 1.5 kg, the removal rate reaches more than 97%, and the fly ash is used for carrying out purification treatment tests on the Cr-containing wastewater, so that the result shows that the Cr removal is mainly an adsorption process of the fly ash, the adsorption rate and the concentration of Cr in the wastewater form a linear relation, and the adsorption effect is excellent; the adsorption performance of the fly ash on Cu is very good, and the removal result of the fly ash on Cu is very good; the adsorption effect of the fly ash to Hg is even excellent compared with active carbon, and the removal rate can reach 99%.
4 removal of fluorine and phosphorus
Research on treating fluorine-containing wastewater by using fly ash shows that the fluorine removal rate of raw water containing 20-100 mg/L of fluorine can reach more than 65% by using the fly ash to treat the fluorine-containing wastewater, and the fluorine content of the raw water can be reduced to be below the discharge standard of industrial wastewater by using the fly ash and quicklime powder as an integrated system for removing fluorine; the fly ash has a certain removing effect on phosphorus in domestic sewage, and the removing rate reaches 68-73%; treating the fluorine-containing acidic wastewater by adopting a stirring suspension method, wherein when the grey-water ratio is 1: l0, stirring L h to reduce the mass concentration of fluorine in the raw water from 700 mg/L to L0mg/L and increase the pH value from 2-3 to 6-7; the method adopts a mixed filtration process of quicklime powder and fly ash to treat high-concentration fluorine-containing and phosphorus-containing chemical wastewater, so that the mass concentration of fluorine and phosphorus is respectively reduced from 140 mg/L and 28mg/L to below 10 mg/L and L mg/L.
The invention selects polyaluminum ferric chloride as floc adsorbent, and the appearance is as follows: the solid product is brown, reddish brown powder or crystalline grain shape, and is very easy to dissolve in water; the coagulation effect is expressed as reduction of residual turbidity chromaticity, and has the advantages of fast floc formation, high adsorption performance and good sludge filtration and dehydration performance, and particularly, the coagulation effect is obvious when high-turbidity sewage and low-turbidity sewage are treated;
the polyaluminum ferric chloride is developed on the basis of the deep research on the hydrolysis and coagulation mechanisms of polyaluminum chloride and ferric trioxide, aluminum salt and ferric salt coagulants, integrates the advantages of aluminum salt and ferric salt coagulation, introduces polyvalent anions and sulfate ions, obviously improves the forms of aluminum ions and ferric ions, and greatly improves the polymerization degree; the performance and the advantages are as follows: 1. the hydrolysis speed is high, the hydration is weak, the formed alum floc is dense, the sedimentation speed is high, the influence of water temperature change is small, and the requirement of generating shearing force in the flowing process of sewage can be met; 2. the polyaluminum ferric chloride can effectively remove aluminum ions in sewage and residual free aluminum ions in water after aluminum salt coagulation; 3. the application range is wide, and the domestic drinking water, the industrial water, the domestic sewage and the industrial sewage are treated; 4. the dosage is small, the treatment effect is good, and the cost is saved by 10-20% compared with other coagulants; the polyaluminum ferric chloride product is particularly suitable for the purification treatment of domestic sewage and industrial sewage.
The invention selects ferrous sulfate as a flocculation decoloration enhancer, the molecular formula of the ferrous sulfate is FeSO4.7H2O, the molecular weight is as follows: 278.05 is a by-product produced during the process of producing a rare metal product by sulfuric acid method, the product appearance is light green or light yellow green crystalline solid, has no smell, relative density of 1.898, melting point of 64 ℃, is dissolved in water (48.6 g/100ml water at 50 ℃) and is decomposed by red heat to generate ferric oxide, has corrosiveness, can be weathered in dry air and is easy to be oxidized by humid air; the pH value of the alkaline water can be adjusted by adding proper dosage, the pH value is organically combined with suspended matters in the water, the precipitation is accelerated, the method is mainly applied to water quality purification and industrial wastewater treatment, and the ferrous sulfate is mainly used as a flocculating agent: the flocculant has good flocculation effect and good decolorization capability, also has the functions of removing heavy metal ions, deoiling, dephosphorizing and sterilizing, has obvious effects of especially decolorizing printing and dyeing wastewater and removing ferrite coprecipitation of COD and electroplating wastewater, has low price and is particularly suitable for treating printing and dyeing and electroplating industrial wastewater.
The invention relates to a manufacturing method for producing a filtering decolorant by oil-containing sludge, which is characterized in that raw materials of ash powder, fly ash powder, quicklime powder, calcium sulfate powder, polymeric aluminum ferric chloride and ferrous sulfate of the oil-containing sludge are mixed and stirred by a double-shaft paddle mixing stirrer, so that the materials are subjected to mechanical action in a machine body to generate comprehensive composite circulation, and the comprehensive composite circulation is widely staggered without dead angles, thereby achieving the purpose of uniformly diffusing, mixing and filtering the decolorant; and then conveying the uniformly mixed filtering decolorant powder to a special storage silo, and packaging by adopting a full-automatic electronic metering weighing packaging machine system to prepare a filtering decolorant product.
The raw materials of the invention can also be made into other filtering agents with different specifications and models.
The oily sludge filtering and decolorizing agent produced according to the technology of the invention is tested by a product quality detection department of a technical supervision bureau, and all technical indexes of the agent meet the standard requirements of ' granular carclazyte ' in the chemical industry of the people's republic of China.
The detection result of the product quality inspection center is as follows:
detecting an oil-containing sludge filtering and decolorizing agent: according to the standard of ' granular clay ' in the chemical industry of HG/T2825-2009 people's republic of China,
and (3) detection results:
a) fineness: d90/mum 5.0μm;
b) specific surface area/(cm)2/g）： 590；
c) Initial olefin removal activity (mLBr/100 g oil): 3.8 of the total weight of the mixture;
d) water content%: 5.6;
e) bulk density (g/mL): 0.6 to 0.8;
f) particle compressive resistance/N: 3.8 of the total weight of the mixture;
g) percent decolorization: 97.8 of;
the detection result meets the requirements of national industry standards.
Due to the adoption of the technical scheme, the technology has the following advantages and effects:
a) the oily sludge filtering and decolorizing agent disclosed by the invention takes oily sludge and fly ash as main raw materials and is used for comprehensively utilizing solid waste, so that the resource comprehensive utilization of the oily sludge and the fly ash is realized, and the oily sludge filtering and decolorizing agent is beneficial to energy conservation, emission reduction and environmental protection;
b) the problems that a large amount of land resources are required to be occupied and secondary pollution is easily caused in the landfill process of the oily sludge and the fly ash are solved, the ecological environment is protected, the land is saved, and the comprehensive utilization rate of the resources of the oily sludge and the fly ash is up to more than 98%;
c) the filtering decolorant is produced by utilizing the oily sludge and the fly ash, is a green, environment-friendly and energy-saving product, and has wide development prospect;
d) the production process is simple, three wastes are not discharged, the requirements of national policies of energy conservation and emission reduction, low-carbon economy development and recycling economy are met, the investment is low, the effect is fast, the cost is low, and the benefit is good.
Detailed Description
Example 1
The method comprises the steps of subjecting oily sludge, namely industrial wastewater generated in the process of processing and refining petroleum by an oil refinery, wastewater generated in the process of processing petroleum machinery, oily wastewater and domestic sewage to flotation, filtration, flocculation and chemical treatment to generate active sludge, crude oil separation tank bottom mud, flotation tank scum, crude oil tank bottom mud and a combination of various oily sludge, mechanically dehydrating the oily sludge until the water content is below 80%, and carrying out high-temperature incineration on the oily sludge by adopting a full-automatic mechanical dynamic double-cylinder rotary kiln; with screw conveyer, carry oily sludge to kiln tail feeding entry, make oily sludge can enter into the kiln automatically, along with the rotation of the kiln body, oily sludge slowly passes through kiln body drying area, wherein: the rotating speed of the kiln body is 2.0-2.6/min, the drying temperature is 220-250 ℃, and the drying time is 30 min; entering a preheating incineration area, wherein the preheating temperature is 350-400 ℃, and the time is 30-35 min; and (3) entering a high-temperature incineration area, wherein the rotating speed of a kiln body is 2.8-4.0/min, and the incineration temperature is controlled to be a temperature suitable for the oily sludge incineration slag to form small particles: the temperature is 750-950 ℃, and the time is controlled to be 30-40 min; organic pollutants with too low temperature are not completely combusted, malodorous gas is easily formed, the environment is polluted, the temperature is too high, oily sludge incineration slag is easily agglomerated into large blocks, the formation of small particles is not facilitated, the investment of crushing equipment and a crushing process flow is required to be increased, and the production cost cannot be effectively reduced; therefore, the requirement on the control of the incineration temperature of the oily sludge is strict, and after the oily sludge powder which is incinerated at high temperature and discharged from the kiln is cooled, the oily sludge powder is screened by adopting a multistage vibrating screen to prepare powder with the particle size of less than 0.045mm for later use;
fly ash is a volcanic ash-like mixed material formed by high-temperature combustion of coal powder; coal is ground into coal powder with the particle size of less than 100 microns by a thermal power plant, preheated air is sprayed into a hearth to be combusted in a suspension state, high-temperature flue gas mixed with a large amount of non-combustible materials is generated, and the coal powder is collected by a dust collecting device to obtain fly ash; after sorting, magnetic separation, drying and screening, powder with the particle size of less than 0.045mm is prepared for standby;
calcining limestone at high temperature, crushing, sorting, crushing, grinding and screening to prepare powder with the particle size of less than 0.045mm for later use;
58kg of the prepared oily sludge incineration ash powder, 33kg of fly ash powder, 15kg of quicklime powder, 3kg of calcium sulfate, 5kg of polyaluminum ferric chloride and 8kg of ferrous sulfate are taken as raw materials, and a double-shaft paddle mixing stirrer is adopted for mixing and stirring, so that the materials are subjected to mechanical action in a machine body to generate comprehensive compound circulation, and the comprehensive compound circulation is widely staggered without dead angles, so that the aim of uniformly diffusing, mixing and filtering the decolorizing agent is fulfilled; then conveying the uniformly mixed filtering decolorant powder to a special storage silo, and packaging by adopting a full-automatic electronic metering weighing packaging machine system to prepare a filtering decolorant product; the product meets the requirements of national industry standard through inspection.
Example 2
Taking 78kg of oily sludge incineration ash powder, 45kg of fly ash powder, 28kg of quick lime powder, 6kg of calcium sulfate, 8kg of polyaluminum ferric chloride and 12kg of ferrous sulfate which are used as raw materials in the embodiment 1, and mixing and stirring the raw materials by adopting a double-shaft paddle mixing stirrer to ensure that the materials are subjected to mechanical action in a machine body to generate comprehensive compound circulation and are widely staggered without dead angles, thereby achieving the aim of uniformly diffusing, mixing and filtering the decolorizing agent; then conveying the uniformly mixed filtering decolorant powder to a special storage silo, and packaging by adopting a full-automatic electronic metering weighing packaging machine system to prepare a filtering decolorant product; the product meets the requirements of national industry standard through inspection.
Example 3
60kg of oily sludge incineration ash powder, 35kg of fly ash powder, 18kg of quick lime powder, 4kg of calcium sulfate, 6kg of polyaluminum ferric chloride and 9kg of ferrous sulfate in example 1 are taken as raw materials, and a double-shaft paddle mixing stirrer is adopted for mixing and stirring, so that the materials are subjected to mechanical action in a machine body to generate comprehensive composite circulation, and the comprehensive composite circulation is widely staggered without dead angles, so that the aim of uniformly diffusing, mixing and filtering the decolorizing agent is fulfilled; then conveying the uniformly mixed filtering decolorant powder to a special storage silo, and packaging by adopting a full-automatic electronic metering weighing packaging machine system to prepare a filtering decolorant product; the product meets the requirements of national industry standard through inspection.
Example 4
Taking 65kg of oily sludge incineration ash powder, 40kg of fly ash powder, 22kg of quick lime powder, 5kg of calcium sulfate, 8kg of polyaluminum ferric chloride and 10kg of ferrous sulfate which are used as raw materials in the embodiment 1, and mixing and stirring the raw materials by adopting a double-shaft paddle mixing stirrer to ensure that the materials are subjected to mechanical action in a machine body to generate comprehensive compound circulation and are widely staggered without dead angles, thereby achieving the aim of uniformly diffusing, mixing and filtering the decolorizing agent; then conveying the uniformly mixed filtering decolorant powder to a special storage silo, and packaging by adopting a full-automatic electronic metering weighing packaging machine system to prepare a filtering decolorant product; the product meets the requirements of national industry standard through inspection.
Example 5
Taking 70kg of oily sludge incineration ash powder, 38kg of fly ash powder, 25kg of quick lime powder, 6kg of calcium sulfate, 7kg of polyaluminum ferric chloride and 11kg of ferrous sulfate which are used as raw materials in the embodiment 1, and mixing and stirring the raw materials by adopting a double-shaft paddle mixing stirrer to ensure that the materials are subjected to mechanical action in a machine body to generate comprehensive compound circulation and are widely staggered without dead angles, thereby achieving the aim of uniformly diffusing, mixing and filtering the decolorizing agent; then conveying the uniformly mixed filtering decolorant powder to a special storage silo, and packaging by adopting a full-automatic electronic metering weighing packaging machine system to prepare a filtering decolorant product; the product meets the requirements of national industry standard through inspection.
Claims (3)
1. A filtering decolorant produced by oily sludge is characterized by being prepared from the following raw materials in parts by weight:
58-78 parts of oily sludge incineration ash powder
33-45 parts of fly ash powder
15-28 parts of quicklime powder
3-6 parts of calcium sulfate powder
5-8 parts of polyaluminum ferric chloride
8-12 parts of ferrous sulfate
The oily sludge is industrial wastewater generated in the process of processing and refining petroleum by an oil refinery, wastewater generated in the process of processing petroleum machinery, oily wastewater and domestic sewage, and is a combination of activated sludge generated after being treated by adopting flotation, filtration, flocculation and chemical methods in a sewage treatment plant, bottom sludge of a crude oil separation tank, floating slag of a flotation tank and bottom sludge of a crude oil tank, wherein the water content is 93-99%; mechanically dewatering until the water content is below 80%, and burning the oily sludge at high temperature by adopting a full-automatic mechanical dynamic double-cylinder rotary kiln; with screw conveyer, carry oily sludge to kiln tail feeding entry, make oily sludge can enter into the kiln automatically, along with the rotation of the kiln body, oily sludge slowly passes through kiln body drying area, wherein: the rotating speed of the kiln body is 2.0-2.6R/min, the drying temperature is 220-250 ℃, and the drying time is 30 min; entering a preheating incineration area, wherein the preheating temperature is 350-400 ℃, and the time is 30-35 min; and (2) entering a high-temperature burning area, wherein the rotating speed of a kiln body is 2.8-4.0R/min, and the burning temperature is controlled at a temperature suitable for the oily sludge burning ash slag to form small particles: controlling the temperature to be 750-950 ℃ and the time to be 30-40 min; organic pollutants with too low temperature are not completely combusted, malodorous gas is easily formed, the environment is polluted, the temperature is too high, oily sludge incineration ash is easily agglomerated into large blocks, the formation of small particles is not facilitated, the investment of crushing equipment and a crushing process flow is required to be increased, and the production cost cannot be effectively reduced; therefore, the requirement on the control of the incineration temperature of the oily sludge is strict, and after the oily sludge powder which is incinerated at high temperature and discharged from the kiln is cooled, the oily sludge powder is screened by adopting a multistage vibrating screen to prepare powder with the particle size of less than 0.045 mm;
the fly ash powder is a volcanic ash-like mixed material formed by high-temperature combustion of coal powder; coal is ground into coal powder with the particle size of less than 100 microns by a thermal power plant, preheated air is sprayed into a hearth to be combusted in a suspension state, high-temperature flue gas mixed with a large amount of non-combustible substances is generated, and the coal powder is collected by a dust collecting device to obtain fly ash; magnetic separation, drying and screening are carried out to prepare powder with the particle size of less than 0.045 mm;
the quick lime powder is prepared by calcining limestone at high temperature, crushing, sorting, crushing, grinding and screening to obtain powder with the particle size of less than 0.045 mm.
2. The method for manufacturing the filtering decolorant produced by the oily sludge according to claim 1 is characterized by comprising the following steps:
58-78 parts by weight of oily sludge incineration ash powder, 33-45 parts by weight of fly ash powder, 15-28 parts by weight of quick lime powder, 3-6 parts by weight of calcium sulfate powder, 5-8 parts by weight of polyaluminum ferric chloride and 8-12 parts by weight of ferrous sulfate are mixed and stirred by a double-shaft paddle mixing stirrer, so that the materials are subjected to mechanical action in a machine body to generate comprehensive composite circulation and are widely staggered without dead angles, and the aim of uniformly diffusing, mixing, filtering and decolorizing agents is fulfilled; and then conveying the uniformly mixed filtering decolorant powder to a special storage silo, and packaging by adopting a full-automatic electronic metering weighing packaging machine system to prepare a filtering decolorant product.
3. The filtering decolorant produced with oily sludge as set forth in claim 1, and features that the crushed size of calcium sulfate is less than 0.045 mm.
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