CN110002633A - A kind for the treatment of process of landfill leachate - Google Patents
A kind for the treatment of process of landfill leachate Download PDFInfo
- Publication number
- CN110002633A CN110002633A CN201910338919.4A CN201910338919A CN110002633A CN 110002633 A CN110002633 A CN 110002633A CN 201910338919 A CN201910338919 A CN 201910338919A CN 110002633 A CN110002633 A CN 110002633A
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- China
- Prior art keywords
- landfill leachate
- treatment
- dtnf
- nanofiltration membrane
- treatment process
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 63
- 239000000149 chemical water pollutant Substances 0.000 title claims abstract description 56
- 230000008569 process Effects 0.000 title claims abstract description 45
- 238000001728 nano-filtration Methods 0.000 claims abstract description 40
- 239000012528 membrane Substances 0.000 claims abstract description 35
- POJAQDYLPYBBPG-UHFFFAOYSA-N 2-(2,4,7-trinitrofluoren-9-ylidene)propanedinitrile Chemical compound [O-][N+](=O)C1=CC([N+]([O-])=O)=C2C3=CC=C([N+](=O)[O-])C=C3C(=C(C#N)C#N)C2=C1 POJAQDYLPYBBPG-UHFFFAOYSA-N 0.000 claims abstract description 29
- 230000009615 deamination Effects 0.000 claims abstract description 24
- 238000006481 deamination reaction Methods 0.000 claims abstract description 24
- 230000003647 oxidation Effects 0.000 claims abstract description 22
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims abstract description 16
- 150000003839 salts Chemical class 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 12
- 238000006555 catalytic reaction Methods 0.000 claims abstract description 11
- BIGPRXCJEDHCLP-UHFFFAOYSA-N ammonium bisulfate Chemical compound [NH4+].OS([O-])(=O)=O BIGPRXCJEDHCLP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 239000002253 acid Substances 0.000 claims abstract description 6
- 239000012141 concentrate Substances 0.000 claims abstract description 6
- 239000000243 solution Substances 0.000 claims description 39
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 34
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 32
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 27
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 21
- 229910052742 iron Inorganic materials 0.000 claims description 17
- 239000003463 adsorbent Substances 0.000 claims description 16
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 14
- 239000000654 additive Substances 0.000 claims description 12
- 230000000996 additive effect Effects 0.000 claims description 12
- 239000003504 photosensitizing agent Substances 0.000 claims description 12
- DCKVFVYPWDKYDN-UHFFFAOYSA-L oxygen(2-);titanium(4+);sulfate Chemical compound [O-2].[Ti+4].[O-]S([O-])(=O)=O DCKVFVYPWDKYDN-UHFFFAOYSA-L 0.000 claims description 11
- 229910000348 titanium sulfate Inorganic materials 0.000 claims description 11
- 238000007872 degassing Methods 0.000 claims description 10
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 9
- 150000001875 compounds Chemical class 0.000 claims description 9
- 235000003891 ferrous sulphate Nutrition 0.000 claims description 9
- 239000011790 ferrous sulphate Substances 0.000 claims description 9
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 9
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 9
- 235000006408 oxalic acid Nutrition 0.000 claims description 9
- 239000003426 co-catalyst Substances 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 claims description 8
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 7
- 229910021529 ammonia Inorganic materials 0.000 claims description 7
- 229910017604 nitric acid Inorganic materials 0.000 claims description 7
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 6
- 229940126062 Compound A Drugs 0.000 claims description 6
- NLDMNSXOCDLTTB-UHFFFAOYSA-N Heterophylliin A Natural products O1C2COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC2C(OC(=O)C=2C=C(O)C(O)=C(O)C=2)C(O)C1OC(=O)C1=CC(O)=C(O)C(O)=C1 NLDMNSXOCDLTTB-UHFFFAOYSA-N 0.000 claims description 6
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 6
- 239000000908 ammonium hydroxide Substances 0.000 claims description 6
- XTVVROIMIGLXTD-UHFFFAOYSA-N copper(II) nitrate Chemical compound [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 claims description 6
- 238000010790 dilution Methods 0.000 claims description 6
- 239000012895 dilution Substances 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 238000005189 flocculation Methods 0.000 claims description 6
- 230000016615 flocculation Effects 0.000 claims description 6
- 239000003365 glass fiber Substances 0.000 claims description 6
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Chemical compound [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 claims description 6
- 238000000967 suction filtration Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 239000002893 slag Substances 0.000 claims description 5
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 239000003054 catalyst Substances 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 229920002401 polyacrylamide Polymers 0.000 claims description 4
- BWJUFXUULUEGMA-UHFFFAOYSA-N propan-2-yl propan-2-yloxycarbonyloxy carbonate Chemical compound CC(C)OC(=O)OOC(=O)OC(C)C BWJUFXUULUEGMA-UHFFFAOYSA-N 0.000 claims description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 3
- 239000005864 Sulphur Substances 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 230000004913 activation Effects 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 230000003197 catalytic effect Effects 0.000 claims description 3
- UFMZWBIQTDUYBN-UHFFFAOYSA-N cobalt dinitrate Chemical compound [Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O UFMZWBIQTDUYBN-UHFFFAOYSA-N 0.000 claims description 3
- 229910001981 cobalt nitrate Inorganic materials 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 239000012153 distilled water Substances 0.000 claims description 3
- 239000012467 final product Substances 0.000 claims description 3
- 230000001376 precipitating effect Effects 0.000 claims description 3
- 239000012752 auxiliary agent Substances 0.000 claims description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 2
- HCCMZPLHUHZXCI-UHFFFAOYSA-N [C].[Co].[Cu] Chemical compound [C].[Co].[Cu] HCCMZPLHUHZXCI-UHFFFAOYSA-N 0.000 claims 1
- 239000005416 organic matter Substances 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000001223 reverse osmosis Methods 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract description 2
- 239000010813 municipal solid waste Substances 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- 239000002671 adjuvant Substances 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- WURBVZBTWMNKQT-UHFFFAOYSA-N 1-(4-chlorophenoxy)-3,3-dimethyl-1-(1,2,4-triazol-1-yl)butan-2-one Chemical compound C1=NC=NN1C(C(=O)C(C)(C)C)OC1=CC=C(Cl)C=C1 WURBVZBTWMNKQT-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011953 bioanalysis Methods 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000006396 nitration reaction Methods 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 239000003643 water by type Substances 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
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/74—Iron group metals
- B01J23/75—Cobalt
-
- 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
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
-
- 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
-
- 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
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/06—Contaminated groundwater or leachate
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/026—Fenton's reagent
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Water Treatment By Sorption (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses a kind for the treatment of process of landfill leachate, are related to environmental technology field.The technique includes: pretreatment, and pretreating agent is added to landfill leachate, pH is adjusted after standing to faintly acid；Pretreated liquid returns level-one DTNF nanofiltration membrane through two-stage DTNF nanofiltration membrane treatment, second level DTNF nanofiltration membrane treatment gained concentrate；Filtered solution obtained by second level DTNF nanofiltration membrane is through deamination film process, the ammonia sulfuric acid absorption extracting sulfuric acid ammonium of abjection；The liquid of deamination processing carries out catalysis oxidation and is then de-gassed.This method mainly use nanofiltration membrane and deamination film in landfill leachate organic matter and ammonia nitrogen handle, compared with traditional biochemical treatment or reverse osmosis membrane carry out processing, have treatment effeciency high, the small advantage of occupied area；The treatment process is insensitive to salt, is conducive to the stable operation of system, while effectively recycling inorganic salts, raising mentions producing water ratio to reduce recharge water to the processing capacity of ammonia nitrogen.
Description
Technical field
The present invention relates to environmental technology fields, in particular to a kind for the treatment of process of landfill leachate.
Background technique
Landfill leachate refers to the moisture that rubbish itself contains in refuse landfill, the sleet water into landfill yard
And other moisture, the saturation moisture capacity of rubbish, overburden layer is deducted, and undergo waste layer and overburden layer and a kind of high concentration for being formed
Organic wastewater, and the rubbish moisture that leaks out of the preparation for burning of accumulation.Once generation leakage will cause serious
The difficulty in treatment of environmental pollution, landfill leachate mainly has: 1. landfill leachate water quality is complicated, and by component of refuse, place
Weather conditions, the hydrogeological condition of raining in place, landfill condition and the influence of time, changing rule is complicated, causes processing difficult
Degree is big, may cause because of reasons such as treatment process, change of water quality, water outlet waters after landfill leachate treatment Project in Operation
Original matched treatment process is unable to satisfy actual operation demand；2. tenor is high, more than 10 kinds of gold are contained in landfill leachate
Belong to ion, these metal ions can generate seriously inhibiting effect to biological treatment process；Colleague's microbial nutrition element ratio
Imbalance, mainly C, N, P's is out of proportion；The CO generated due to garbage degradation2Dissolution so that landfill leachate be in subacidity, this
The environment of kind slant acidity exacerbates carbonate not soluble in water in rubbish, metal and its metal oxide etc. and dissolves；③
CODcr and BOD5 concentration is high；4. ammonia-nitrogen content is high, and increases with the extension of landfill time, 1700mg/L is reached as high as.It seeps
Nitrogen in filtrate exists mostly in the form of ammonia nitrogen, accounts for about TNK40%-50%.
Landfill leachate mostly uses bioanalysis and " MBR+NF+RO " process at present, but treatment effect is undesirable, and one
Aspect effluent quality is unable to reach discharge standard；On the other hand, equipment disposal ability is only capable of reaching 50-60% of design value or so
Cause investment, operating cost high, many landfill leachates are stored using accident pool is increased.Landfill leachate shows rank
Section is difficult to tackle the major problem: Denitrogenation.The common denitrification process of landfill leachate treatment have nitration denitrification biological denitrificaion,
The techniques such as ammonia aeration and embrane method, denitrogenation, but because of polytechnic limitation, influence the treatment effect of percolate.The ammonia of high concentration
Nitrogen not only makes operating cost increase severely, and influences the treatment effect of percolate.
Summary of the invention
Goal of the invention of the invention is: in view of the above problems, a kind for the treatment of process of landfill leachate is provided,
The technique is discharged not up to standard, the especially exceeded problem of ammonia nitrogen after solving processing in the prior art, for reaching for landfill leachate
Mark processing provides new technical solution.
The technical solution adopted by the invention is as follows:
A kind for the treatment of process of landfill leachate comprising following steps:
Pretreatment, is added pretreating agent to landfill leachate, stands 2-6h, then adjusts pH to faintly acid, flocculation removes wherein
Part larger molecular organics and scaling salt；
Nanofiltration processing, the liquid obtained after pretreatment is first post-processed through level-one DTNF nanofiltration membrane and second level DTNF nanofiltration membrane,
The concentrate that middle second level DTNF nanofiltration membrane treatment obtains returns to level-one DTNF nanofiltration membrane and is handled again；
Deamination processing, the filtered solution that second level DTNF nanofiltration membrane treatment obtains deviate from ammonia nitrogen therein through deamination film process, abjection
Ammonia is absorbed with sulfuric acid, extracting sulfuric acid ammonium；
Catalysis oxidation carries out catalysis oxidation to deamination treated landfill leachate, reduces COD therein；
Degassing tower processing, landfill leachate are imported in degassing tower and are de-gassed, and further decrease COD content therein.
In the present solution, mainly being handled using nanofiltration membrane and deamination film organic matter and ammonia nitrogen, at traditional biochemistry
Reason or reverse osmosis membrane carry out processing and compare, and have treatment effeciency height, the small advantage of occupied area；The treatment process is unwise to salt
Sense is conducive to the stable operation of system, while effectively recycling inorganic salts, the processing capacity to ammonia nitrogen is improved, to reduce recharge
Water mentions producing water ratio.
Further, in pretreatment, iron adsorbent, photosensitizer additive that the pretreating agent is 4-6:2-3:1 by mass ratio
It is formed with flocculant, wherein iron adsorbent and bright auxiliary agent are added simultaneously, then give ultraviolet lighting, are added after reacting 0.5-2h
The reaction was continued for flocculant.
By adopting the above-described technical solution, containing for the scaling salts such as magnesium, calcium and organic matter can be effectively reduced in pretreating agent
Amount is that subsequent nanofiltration processing and deamination processing reduce load.Wherein, iron adsorbent can be organic to scaling salt and macromolecular
Object is adsorbed, while partial organic substances can decompose under the action of photosensitizer additive and ultraviolet light, and flocculant is then added, and will inhale
Iron adsorbent after attached impurity, which flocculates, to be solidified, and is conducive to remove.
Further, the iron adsorbent is prepared with the following method:
Ferrous sulfate is taken, is dissolved completely in the dilution heat of sulfuric acid that concentration is 1-10wt% and obtains ferrous sulfate solution；Then sulphur is taken
The di-isopropyl peroxydicarbonate of sour ferrous iron quality 50-80%, is dissolved completely in ethylene glycol until oxidation solution；By sulfuric acid Asia
Ferrous solution is at the uniform velocity added in oxidation solution, and 12-36h is stirred to react under the conditions of 120-160r/min, 10-20 DEG C, filters to take filter residue,
Filter residue and drying obtains iron adsorbent.
Further, the photosensitizer additive is prepared with the following method:
Titanium sulfate is taken, is dissolved completely in the dilution heat of sulfuric acid that concentration is 1-10wt% and obtains titanium sulfate solution, by titanium sulfate solution
At the uniform velocity be added to concentration be 10-20wt% ammonium hydroxide in, wherein the mass ratio of titanium sulfate and ammonium hydroxide be 1:4-6,25-30 DEG C
Under the conditions of be stirred to react 1-2h, suction filtration takes suction filtration slag, and it is the molten of 10-15wt% that filter residue, which is dissolved completely in distilled water and forms concentration,
Liquid adjusts pH value of solution to 6.8-7.5 with dilute sulfuric acid, the zinc powder of filter residue quality 10-20% is added, is stirred to react 1-2h, filters to take filter
Slag, filter residue are washed with deionized, and obtain compound A；
It is that 6-15:1 takes compound A and five Y 2 Os according to mass ratio, the two is completely dissolved in oxalic acid, 1- is stirred to react
2h, then the cooling 10-30min at 2-8 DEG C, filters to take precipitating, obtains compound B；
It is that 1:0.8-2:3-5 takes glass fiber, compound B and oxalic acid according to mass ratio, glass fiber is heated to 70-
90 DEG C, existing addition compound B and oxalic acid keep the temperature 2-4h at 50-70 DEG C, then heat to 450-500 DEG C, react 0.5-
1h is cooled to room temperature up to photosensitizer additive.
Further, the flocculant is selected from one of anion-polyacrylamide or aluminium polychloride.
The iron after adsorbing contaminant is adsorbed by adopting the above-described technical solution, flocculant can be acted on by adsorption bridging
Agent and other bulky grains are adsorbed, and flocculation is strong.
Further, landfill leachate pH to 6.5-7.0 is adjusted.
Further, in nanofiltration treatment process, inflow temperature control is at 10-30 DEG C, pH 5-9.
Further, in deamination treatment process, water inlet adjusts pH >=11, and temperature is 20-40 DEG C.
Further, in catalytic oxidation process, catalyst used is active carbon-copper-Co catalysts, the active carbon-
Copper-Co catalysts are prepared via a method which:
Active carbon is crossed into 20-40 mesh, is subsequently placed in the nitric acid of 1-3mol/L and impregnates activation 4-8h, filter and wash away nitre completely
Acid obtains activated carbon after dry；
In mass ratio be 1:0.8-2 copper nitrate and cobalt nitrate, be dissolved in the dilute nitric acid solution of 0.1-0.2mol/L, then according to
The mass ratio of activated carbon and copper nitrate is that activated carbon is added in 4-9:1, in 240-300r/min, 60-80 DEG C of condition
Then lower reaction 4-8h, filtration drying calcine 1-4h at 360-500 DEG C to obtain the final product.
Further, the active carbon-copper-Co catalysts are 1:1-2:7-9 and sodium peroxydisulfate and peroxide according to mass ratio
Change hydrogen combination.
By adopting the above-described technical solution, the catalyst has absorption pollutant, is capable of the dual of efficiently catalyzing and oxidizing
Effect, it is high to the removal efficiency of COD, secondary pollution is not caused, while being adapted to different pH environment, it is practical.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are:
The present invention provides a kind for the treatment of process of landfill leachate, this method mainly uses nanofiltration membrane and deamination film to seep rubbish
Organic matter and ammonia nitrogen in filtrate are handled, and compared with traditional biochemical treatment or reverse osmosis membrane carry out processing, have processing
It is high-efficient, the small advantage of occupied area；The treatment process is insensitive to salt, is conducive to the stable operation of system, while effectively returning
Inorganic salts are received, raising mentions producing water ratio to reduce recharge water to the processing capacity of ammonia nitrogen, mentions for the processing of landfill leachate
A kind of new thinking is supplied.
Detailed description of the invention
Examples of the present invention will be described by way of reference to the accompanying drawings, in which:
Fig. 1 is the process flow chart of the treatment process of landfill leachate provided by the invention.
Specific embodiment
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
Any feature disclosed in this specification (including any accessory claim, abstract), unless specifically stated,
It is replaced by other equivalent or with similar purpose alternative features.That is, unless specifically stated, each feature is a series of
An example in equivalent or similar characteristics.
Embodiment 1
The present embodiment provides a kind for the treatment of process of landfill leachate, specifically comprise the following steps:
Step 1: pretreatment is added pretreating agent to landfill leachate, stands 2-6h, then adjusts pH to faintly acid, flocculation removes
Remove part larger molecular organics and scaling salt therein.
Step 2: nanofiltration processing, by the liquid obtained after pretreatment through level-one DTNF nanofiltration membrane and second level DTNF nanofiltration membrane
It first post-processes, the concentrate that wherein second level DTNF nanofiltration membrane treatment obtains returns to level-one DTNF nanofiltration membrane and handled again.
Step 3: deamination processing, the filtered solution that second level DTNF nanofiltration membrane treatment obtains are deviate from therein through deamination film process
The ammonia of ammonia nitrogen, abjection is absorbed with sulfuric acid, extracting sulfuric acid ammonium.
Step 4: catalysis oxidation carries out catalysis oxidation to deamination treated landfill leachate, reduces COD therein.
Step 5: degassing tower processing, landfill leachate are imported in degassing tower and are de-gassed, further decrease therein
COD content.
Embodiment 2
The present embodiment provides a kind for the treatment of process of landfill leachate, specifically comprise the following steps:
Step 1: the iron adsorbent, photosensitizer additive and the yin that are 4-6:2-3:1 by mass ratio are added to landfill leachate for pretreatment
Polyacrylamide forms pretreating agent, wherein and iron adsorbent and light adjuvant is first added, while giving ultraviolet lighting,
0.5-2h is reacted, anion-polyacrylamide is then added, stands 1.5-4h, then adjusts pH to 6.5-7.0, flocculation removes
Part larger molecular organics and scaling salt therein.
Step 2: nanofiltration processing, the fluid temperature obtained after control pretreatment are 10-30 DEG C, pH 5-9, through level-one
DTNF nanofiltration membrane and second level DTNF nanofiltration membrane first post-process, and the concentrate that wherein second level DTNF nanofiltration membrane treatment obtains returns to level-one
DTNF nanofiltration membrane is handled again.
Step 3: deamination processing, the filtered solution that second level DTNF nanofiltration membrane treatment obtains are deviate from therein through deamination film process
The ammonia of ammonia nitrogen, abjection is absorbed with sulfuric acid, extracting sulfuric acid ammonium.
Step 4: catalysis oxidation carries out catalysis oxidation to deamination treated landfill leachate, reduces COD therein.
Step 5: degassing tower processing, landfill leachate are imported in degassing tower and are de-gassed, further decrease therein
COD content.
Embodiment 3
The present embodiment provides a kind for the treatment of process of landfill leachate, specifically comprise the following steps:
Step 1: pretreatment, being added to landfill leachate by mass ratio is the iron adsorbent of 4-6:2-3:1, photosensitizer additive and poly-
It closes aluminium chloride and forms pretreating agent, wherein iron adsorbent and light adjuvant is first added, while giving ultraviolet lighting, reacts 0.5-
Then aluminium polychloride is added in 2h, stand 1.5-4h, then adjusts pH to 6.5-7.0, and flocculation removes part macromolecular therein
Organic matter and scaling salt.
Step 2: nanofiltration processing, the fluid temperature obtained after control pretreatment are 10-30 DEG C, pH 5-9, through level-one
DTNF nanofiltration membrane and second level DTNF nanofiltration membrane first post-process, and the concentrate that wherein second level DTNF nanofiltration membrane treatment obtains returns to level-one
DTNF nanofiltration membrane is handled again.
Step 3: deamination processing adjusts filtered solution pH >=11 that second level DTNF nanofiltration membrane treatment obtains, temperature 20-40
DEG C, deamination processing is carried out into through deamination film, deviates from ammonia nitrogen therein, the ammonia of abjection is absorbed with sulfuric acid, extracting sulfuric acid ammonium.
Step 4: catalysis oxidation, using active carbon-copper-Co catalysts as catalyst, sodium peroxydisulfate and hydrogen peroxide are oxidation
Agent carries out catalysis oxidation to deamination treated landfill leachate, reduces COD therein, neutral charcoal-copper-Co catalysts, mistake
The mass ratio of sodium sulphate and hydrogen peroxide is 1:1-2:7-9.
Step 5: degassing tower processing, landfill leachate are imported in degassing tower and are de-gassed, further decrease therein
COD content.
Embodiment 4
A kind of iron adsorbent and preparation method thereof is provided in the present embodiment, which can be used for the pre- place in embodiment 1-3
Step is managed, which includes the following steps: as follows
Step 1: taking ferrous sulfate, is dissolved completely in the dilution heat of sulfuric acid that concentration is 1-10wt%, obtains ferrous sulfate
Solution, it is preferable that the concentration of ferrous sulfate solution is 10-30wt%.
Step 2: the di-isopropyl peroxydicarbonate of ferrous sulfate quality 50-80% is taken, is dissolved completely in ethylene glycol
Until oxidation solution；Preferably, the concentration of di-isopropyl peroxydicarbonate is 20-40wt% in oxidation solution.
Step 3: ferrous sulfate solution is at the uniform velocity added in oxidation solution, is stirred under the conditions of 120-160r/min, 10-20 DEG C
Reaction 12-36h is mixed, filter residue, the washed drying to obtain iron adsorbent of filter residue are filtered to take.
Embodiment 5
The present embodiment provides the pretreatments that a kind of photosensitizer additive and preparation method thereof, the photosensitizer additive can be used in embodiment 1-3
Step, the preparation method include the following steps: as follows
Step 1: taking titanium sulfate, is dissolved completely in the dilution heat of sulfuric acid that concentration is 1-10wt% and obtains titanium sulfate solution, by sulphur
In the ammonium hydroxide that it is 10-20wt% to concentration that sour titanium solution, which is at the uniform velocity added, wherein the mass ratio of titanium sulfate and ammonium hydroxide is 1:4-6,
1-2h is stirred to react under the conditions of 25-30 DEG C, suction filtration takes suction filtration slag, and it is 10- that filter residue, which is dissolved completely in distilled water and forms concentration,
The solution of 15wt% adjusts pH value of solution to 6.8-7.5 with dilute sulfuric acid, the zinc powder of filter residue quality 10-20% is added, is stirred to react 1-
2h filters to take filter residue, and filter residue is washed with deionized, and obtains compound A.
Step 2: being that 6-15:1 takes compound A and five Y 2 Os according to mass ratio, the two be completely dissolved in oxalic acid,
It is stirred to react 1-2h, then the cooling 10-30min at 2-8 DEG C, filters to take precipitating, obtain compound B.
Step 3: being that 1:0.8-2:3-5 takes glass fiber, compound B and oxalic acid according to mass ratio, by glass fibre
Silk is heated to 70-90 DEG C, and existing addition compound B and oxalic acid keep the temperature 2-4h at 50-70 DEG C, then heats to 450-500
DEG C, 0.5-1h is reacted, is cooled to room temperature up to photosensitizer additive.
Embodiment 6
The present embodiment provides a kind of active carbon-copper-Co catalysts and preparation method thereof, which can be used for
Catalytic oxidation stage in embodiment 1-3, the preparation method include the following steps: as follows
Step 1: taking active carbon, crosses 20-40 mesh, is subsequently placed in the nitric acid of 1-3mol/L and impregnates activation 4-8h, filters and complete
Nitric acid is washed away entirely, obtains activated carbon after dry.
Step 2: it is in mass ratio 1:0.8-2 copper nitrate and cobalt nitrate, is dissolved in the dilute nitric acid solution of 0.1-0.2mol/L
In, it is then that activated carbon is added in 4-9:1 according to the mass ratio of activated carbon and copper nitrate, in 240-300r/min,
4-8h is reacted under the conditions of 60-80 DEG C, then filtration drying calcines 1-4h at 360-500 DEG C to obtain the final product.
Embodiment 7
The application effect of the treatment process for the landfill leachate that the present embodiment provides invention is verified, and is mentioned for its practical application
For further foundation.It is specific as follows:
Obtain certain landfill leachate, to pollutant therein carry out preliminary surveying, ammonia nitrogen about 1200mg/l, COD about 5000mg/l,
TN about 1500mg/l, SS about 500mg/l, TP about 5mg/l.After removing coarse impurities with grid filtration, using the rubbish in embodiment 3
The treatment process of rubbish percolate is handled, and taking that treated, water outlet is analyzed, and the results are shown in Table 1:
1 effluent quality of table analyzes result
| Detection project | TN(mg/L) | COD(mg/L) | SS(mg/L) | Ammonia nitrogen (mg/L) | TP(mg/L) |
| Testing result | 3.86 | 22 | 1 | 2.91 | 0.092 |
There is table 1 it is found that the production water that the treatment process through landfill leachate provided by the invention is handled complies fully with discharge mark
Standard provides a kind of new scheme for the processing of landfill leachate.
The invention is not limited to specific embodiments above-mentioned.The present invention, which expands to, any in the present specification to be disclosed
New feature or any new combination, and disclose any new method or process the step of or any new combination.
Claims (10)
1. a kind for the treatment of process of landfill leachate, which is characterized in that it includes the following steps:
Pretreatment, is added pretreating agent to landfill leachate, stands 2-6h, then adjusts pH to faintly acid, flocculation removes wherein
Part larger molecular organics and scaling salt；
Nanofiltration processing, the liquid obtained after pretreatment is first post-processed through level-one DTNF nanofiltration membrane and second level DTNF nanofiltration membrane,
The concentrate that middle second level DTNF nanofiltration membrane treatment obtains returns to level-one DTNF nanofiltration membrane and is handled again；
Deamination processing, the filtered solution that second level DTNF nanofiltration membrane treatment obtains deviate from ammonia nitrogen therein through deamination film process, abjection
Ammonia is absorbed with sulfuric acid, extracting sulfuric acid ammonium；
Catalysis oxidation carries out catalysis oxidation to deamination treated landfill leachate, reduces COD therein；
Degassing tower processing, landfill leachate are imported in degassing tower and are de-gassed, and further decrease COD content therein.
2. the treatment process of landfill leachate according to claim 1, which is characterized in that in pretreatment, the pretreatment
Agent is made of iron adsorbent, photosensitizer additive and the flocculant that mass ratio is 4-6:2-3:1, and wherein iron adsorbent and bright auxiliary agent are same
When be added, then give ultraviolet lighting, react and flocculant is added after 0.5-2h the reaction was continued.
3. the treatment process of landfill leachate according to claim 2, which is characterized in that the iron adsorbent is using as follows
Method preparation:
Ferrous sulfate is taken, is dissolved completely in the dilution heat of sulfuric acid that concentration is 1-10wt% and obtains ferrous sulfate solution；Then sulphur is taken
The di-isopropyl peroxydicarbonate of sour ferrous iron quality 50-80%, is dissolved completely in ethylene glycol until oxidation solution；By sulfuric acid Asia
Ferrous solution is at the uniform velocity added in oxidation solution, and 12-36h is stirred to react under the conditions of 120-160r/min, 10-20 DEG C, filters to take filter residue,
Filter residue and drying obtains iron adsorbent.
4. the treatment process of landfill leachate according to claim 3, which is characterized in that the photosensitizer additive is using as follows
Method preparation:
Titanium sulfate is taken, is dissolved completely in the dilution heat of sulfuric acid that concentration is 1-10wt% and obtains titanium sulfate solution, by titanium sulfate solution
At the uniform velocity be added to concentration be 10-20wt% ammonium hydroxide in, wherein the mass ratio of titanium sulfate and ammonium hydroxide be 1:4-6,25-30 DEG C
Under the conditions of be stirred to react 1-2h, suction filtration takes suction filtration slag, and it is the molten of 10-15wt% that filter residue, which is dissolved completely in distilled water and forms concentration,
Liquid adjusts pH value of solution to 6.8-7.5 with dilute sulfuric acid, the zinc powder of filter residue quality 10-20% is added, is stirred to react 1-2h, filters to take filter
Slag, filter residue are washed with deionized, and obtain compound A；
It is that 6-15:1 takes compound A and five Y 2 Os according to mass ratio, the two is completely dissolved in oxalic acid, 1- is stirred to react
2h, then the cooling 10-30min at 2-8 DEG C, filters to take precipitating, obtains compound B；
It is that 1:0.8-2:3-5 takes glass fiber, compound B and oxalic acid according to mass ratio, glass fiber is heated to 70-
90 DEG C, existing addition compound B and oxalic acid keep the temperature 2-4h at 50-70 DEG C, then heat to 450-500 DEG C, react 0.5-
1h is cooled to room temperature up to photosensitizer additive.
5. the treatment process of the landfill leachate according to any one of claim 2-4, which is characterized in that the flocculant
Selected from one of anion-polyacrylamide or aluminium polychloride.
6. the treatment process of landfill leachate according to claim 5, which is characterized in that adjust landfill leachate pH to
6.5-7.0。
7. the treatment process of landfill leachate described in any one of -4 or 6 according to claim 1, which is characterized in that at nanofiltration
During reason, inflow temperature control is at 10-30 DEG C, pH 5-9.
8. the treatment process of landfill leachate according to claim 7, which is characterized in that in deamination treatment process, water inlet
PH >=11 are adjusted, temperature is 20-40 DEG C.
9. the treatment process of landfill leachate according to claim 8, which is characterized in that used in catalytic oxidation process
Catalyst be active carbon-copper-Co catalysts, the active carbon-copper-Co catalysts are prepared via a method which:
Active carbon is crossed into 20-40 mesh, is subsequently placed in the nitric acid of 1-3mol/L and impregnates activation 4-8h, filter and wash away nitre completely
Acid obtains activated carbon after dry；
In mass ratio be 1:0.8-2 copper nitrate and cobalt nitrate, be dissolved in the dilute nitric acid solution of 0.1-0.2mol/L, then according to
The mass ratio of activated carbon and copper nitrate is that activated carbon is added in 4-9:1, in 240-300r/min, 60-80 DEG C of condition
Then lower reaction 4-8h, filtration drying calcine 1-4h at 360-500 DEG C to obtain the final product.
10. the treatment process of landfill leachate according to claim 9, which is characterized in that the active carbon-copper-cobalt is urged
Agent is 1:1-2:7-9 and sodium peroxydisulfate and hydrogen peroxide according to mass ratio.
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| CN117123209B (en) * | 2023-09-28 | 2024-02-06 | 北京英诺格林科技有限公司 | Catalyst for oxidation treatment of landfill leachate and preparation method thereof |
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Application publication date: 20190712 |