CN108046477A - Equipment that is a kind of while removing COD and total phosphorus - Google Patents
Equipment that is a kind of while removing COD and total phosphorus Download PDFInfo
- Publication number
- CN108046477A CN108046477A CN201711448457.9A CN201711448457A CN108046477A CN 108046477 A CN108046477 A CN 108046477A CN 201711448457 A CN201711448457 A CN 201711448457A CN 108046477 A CN108046477 A CN 108046477A
- Authority
- CN
- China
- Prior art keywords
- packed tower
- sewage
- equipment
- pump
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 229910052698 phosphorus Inorganic materials 0.000 title claims abstract description 24
- 239000011574 phosphorus Substances 0.000 title claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 75
- 239000010865 sewage Substances 0.000 claims abstract description 59
- 239000000945 filler Substances 0.000 claims abstract description 39
- 230000003197 catalytic effect Effects 0.000 claims abstract description 25
- 238000006073 displacement reaction Methods 0.000 claims abstract description 13
- 238000011049 filling Methods 0.000 claims description 13
- 238000011001 backwashing Methods 0.000 claims description 11
- 238000011010 flushing procedure Methods 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 5
- 239000007800 oxidant agent Substances 0.000 abstract description 11
- 230000001590 oxidative effect Effects 0.000 abstract description 11
- 239000000126 substance Substances 0.000 description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 12
- 238000001179 sorption measurement Methods 0.000 description 11
- 235000014413 iron hydroxide Nutrition 0.000 description 10
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 description 10
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 6
- 239000010802 sludge Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000001914 filtration Methods 0.000 description 5
- 229910019142 PO4 Inorganic materials 0.000 description 4
- 239000004115 Sodium Silicate Substances 0.000 description 4
- JFTTYFWNHKVEMY-UHFFFAOYSA-N barium ferrate Chemical group [Ba+2].[O-][Fe]([O-])(=O)=O JFTTYFWNHKVEMY-UHFFFAOYSA-N 0.000 description 4
- 238000006555 catalytic reaction Methods 0.000 description 4
- 229910052763 palladium Inorganic materials 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- UMPKMCDVBZFQOK-UHFFFAOYSA-N potassium;iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[K+].[Fe+3] UMPKMCDVBZFQOK-UHFFFAOYSA-N 0.000 description 4
- 235000019795 sodium metasilicate Nutrition 0.000 description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 4
- 229910052911 sodium silicate Inorganic materials 0.000 description 4
- 230000006641 stabilisation Effects 0.000 description 4
- 238000011105 stabilization Methods 0.000 description 4
- 238000004065 wastewater treatment Methods 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 3
- 229910000399 iron(III) phosphate Inorganic materials 0.000 description 3
- 239000003863 metallic catalyst Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 3
- 239000010452 phosphate Substances 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000005955 Ferric phosphate Substances 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 229940032958 ferric phosphate Drugs 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 2
- 229910000462 iron(III) oxide hydroxide Inorganic materials 0.000 description 2
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical group [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910052703 rhodium Inorganic materials 0.000 description 2
- 239000010948 rhodium Substances 0.000 description 2
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 2
- 229910052707 ruthenium Inorganic materials 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 159000000013 aluminium salts Chemical class 0.000 description 1
- 229910000329 aluminium sulfate Inorganic materials 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 229910000389 calcium phosphate Inorganic materials 0.000 description 1
- 235000011010 calcium phosphates Nutrition 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 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
- 229940087654 iron carbonyl Drugs 0.000 description 1
- RFGNMWINQUUNKG-UHFFFAOYSA-N iron phosphoric acid Chemical compound [Fe].OP(O)(O)=O RFGNMWINQUUNKG-UHFFFAOYSA-N 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 1
- FLTRNWIFKITPIO-UHFFFAOYSA-N iron;trihydrate Chemical compound O.O.O.[Fe] FLTRNWIFKITPIO-UHFFFAOYSA-N 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 238000013327 media filtration Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- 238000005406 washing Methods 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
-
- 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
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/18—PO4-P
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention belongs to water treatment fields.Specifically, the present invention provides equipment that is a kind of while removing COD and total phosphorus, including at least one sewage treatment unit, the sewage treatment unit includes packed tower and premixing device, water inlet is equipped at the top of the packed tower, bottom is equipped with water outlet, catalytic filler is equipped in the packed tower, the premixing device includes dosing tank, constant displacement pump, sewage pump and premix slot, the premix slot is connected by pipeline with the sewage pump, the dosing tank is connected by the constant displacement pump with the premix slot, the premix slot is connected by pipeline with the water inlet of the packed tower.The novel combination of the equipment utilization oxidant and catalytic filler achievees the purpose that remove COD while efficient dephosphorization, and water outlet phosphorus is up to earth's surface three classes water quality standard.
Description
Technical field
The invention belongs to water treatment fields, and in particular to a kind of while equipment that removes COD and total phosphorus.
Background technology
COD, total nitrogen and total phosphorus are three kinds of pollutants common in sewage.In general, urban wastewater treatment firm is using biology
Processing-activated sludge technology carries out degradation removal pollutant by the effect of microorganism.But effect of the microorganism to dephosphorization
Very limited, the removal rate of phosphorus is only 60%-70%, it is impossible to ensure to stably reach the Effluent criteria requirement of 0.5mg/L, so needing
Enhancements are taken, increases chemical module and carrys out reinforced phosphor-removing effect.Chemical dephosphorization i.e. by add chemical agent formed it is insoluble
Then the calcium phosphate precipitation object of property is removed from sewage phosphorus by precipitation.Mainly have for the medicament of chemical dephosphorization：Aluminium
Salt (such as aluminum sulfate, aluminium chloride), calcium salt and molysite (such as ferric trichloride, ferric sulfate, ferrous sulfate) and polymerization macromolecule
Coagulant, flocculant (such as PAC, PAM) etc..This method added amount of chemical is big, about 60-200mg/L, and generates a large amount of sludge and make
Into secondary pollution, sludge treatment difficulty is big, costly.
The content of the invention
The technical problems to be solved by the invention are to provide equipment that is a kind of while removing COD and total phosphorus, reach efficient
The purpose of COD is removed while dephosphorization, and water outlet phosphorus is up to earth's surface three classes water quality standard.
To achieve these goals, the technical solution used in the present invention is：It is a kind of while remove setting for COD and total phosphorus
Standby, including at least one sewage treatment unit, the sewage treatment unit includes packed tower and premixing device,
Water inlet is equipped at the top of the packed tower, bottom is equipped with water outlet, catalytic filler is equipped in the packed tower,
The premixing device include dosing tank, constant displacement pump, sewage pump and premix slot, it is described premix slot by pipeline with
The sewage pump is connected, and the dosing tank is connected by the constant displacement pump with the premix slot, and the premix slot passes through pipe
Road is connected with the water inlet of the packed tower.
The action principle of the equipment is as follows：The oxidant and sewage after hybrid reaction, pass through in the premix slot
The water inlet, which enters in the packed tower, to be catalyzed, is adsorbed, being filtered, and is then discharged by the water outlet.
Based on the above technical solutions, the present invention can also have following further specific choice or optimum choice.
Specifically, the weight percent of the catalytic filler is：Activated carbon 60%-80%, iron hydroxide 10-30%, gold
Metal catalyst 5-10%.
Preferably, oxidant is equipped in the dosing tank, the oxidant is ferrate.
The action principle of the equipment is as follows：Ferrate and sewage after hybrid reaction, pass through institute in the premix slot
Water inlet is stated into catalytic reaction is carried out in the packed tower, adsorption filtration is then discharged by the water outlet.Ferrate
Active ingredient is (FeO4)2-, there is strong oxidizing property, play the role of oxidation, sterilization, flocculation, deodorization.The ferrate easily with
Redox reaction occurs for Organic substance in water, achievees the purpose that remove COD, while the Fe generated3+Facile hydrolysis generates Fe (OH)3,
Filler surface is enriched in through media filtration, with the consumption of the proper constituent iron hydroxide in additional fillers, iron hydroxide is being urged again
Under the catalytic action of agent with phosphate reaction：Fe(OH)3+H2PO4 -+H+→FePO4+3H2O, rear ferric phosphate are modified filler mistake
Filter absorption.Play the role of while remove COD, TP.And since the adsorption filtration of modified filler acts on, greatly reduce medicament
Dosage, and generated without sludge.
Specifically, the filling height of the packed tower is less than or equal to the 70% of the filler tower height degree.
Preferably, the ferrate is barium ferrate, Na2Fe04 or potassium ferrate.
Stabilization aid is also added specifically, being additionally added in the dosing tank, such as sodium metasilicate.
Specifically, the metallic catalyst is manganese, the simple substance such as platinum, palladium, rhodium, silver, ruthenium and titanium or manganese dioxide, palladium bichloride
Etc. compounds.
Preferably, the packing material size in the packed tower is 0.5-1.2mm, and nonuniformity coefficient is less than or equal to 1.7, compares table
Area is 1000-2000m2/g。
Specifically, further including backwashing equipment, the backwashing equipment is made of cleaning pump and filtered water tank, the packed tower
Bottom is equipped with backwash water inlet and top is equipped with backwash water outlet, and described flushing pump one end is connected with filtered water tank, the other end and institute
State the backwash water inlet connection of packed tower.
The backwashing equipment is by electric control system controls.
The backwashing equipment can prevent catalytic filler tower to be contaminated particle blocking, and filter resistance increase makes flow
Decline.Backwashing period is 2-6d, backwashing time 15-30min, by electric control system controls.
It should be noted that equipment that is described while removing COD and total phosphorus can be superimposed use, it is dirty by that will treat
Water adds oxidant and again into the catalysis of two level packed tower, forms multistage catalytic equipment.
Equipment that is a kind of while removing COD and total phosphorus, the quantity of the sewage treatment unit is two, and one of institute
State the water outlet of the packed tower of sewage treatment unit and the sewage lifting of another sewage treatment unit
Pump is connected by pipeline.
The action principle of the equipment is as follows：In the case of higher to the requirement of the degree of sewage disposal, multistage is used
Sewage disposal device is conducive to advanced treatment of wastewater.By the sewage that oxidant and the first water outlet are discharged in the second premix slot
After hybrid reaction, entered by the second water inlet in the second packed tower and carry out catalytic reaction, adsorption filtration then goes out by second
It discharges at the mouth of a river.
In addition, the present invention also provides methods that is a kind of while removing COD and total phosphorus, include the following steps：
1) sewage and oxidant are subjected to premixing reaction；
2) mixture after reaction is subjected to catalytic reaction, adsorption filtration into packed tower by pipeline；
Wherein, the weight percent of catalytic filler is in the packed tower：Activated carbon 60%-80%, iron hydroxide 10-
30%, metallic catalyst 5-10%.
Specifically, the filling height of the packed tower is less than or equal to the 70% of the filler tower height degree.
Preferably, the oxidant is ferrate, and the ferrate is barium ferrate, Na2Fe04 or ferric acid
Potassium.
Specifically, stabilization aid is also added in the reaction mixture, such as sodium metasilicate.
Specifically, the metallic catalyst is manganese, the simple substance such as platinum, palladium, rhodium, silver, ruthenium and titanium or manganese dioxide, palladium bichloride
Etc. compounds.
Preferably, the packing material size in the packed tower is 0.5-1.2mm, and nonuniformity coefficient is less than or equal to 1.7, compares table
Area is 1000-2000m2/g。
Specifically, the method further includes backwash step, the negative direction in clear water along drainage flow direction, which washes away at a high speed, to be filled out
Filler in tower is expected, so as to play the role of recoil.The backwash step can prevent catalytic filler tower to be contaminated particle blocking, mistake
Filter Resistance increases, and declines flow.Backwashing period is 2-6d, backwashing time 15-30min, by electric control system controls.
Compared with prior art, the beneficial effects of the invention are as follows：Pass through being used cooperatively for oxidant and catalytic filler, a side
Face make use of the performance of strong oxidizer (ferrate) oxygenolysis organic matter, high while organic cod in removing sewage
Ferrous acid salt hydrolysis generate the oxyhydroxide of iron, react with phosphate and generate ferric phosphate flco；On the other hand due to modification
Filler there is large specific surface area in itself, the strong effect of adsorption capacity may filter that the complete phosphate of absorption unreacted and phosphoric acid
Iron.Filler passes through Modification iron hydroxide and load type metal catalyst, effectively accelerates the progress of chemical reaction, instead
Shorten 10 times or so than conventional chemical precipitation dephosphorization method between seasonable.Ferrate oxidation is decomposed, and hydrolyzes the iron carbonyl oxidation of generation
The iron hydroxide that an object part can be used in additional fillers.Due to the filtering adsorption and dephosphorization in combination with ferrate and filler
Effect so as to reduce the usage amount of medicament, is only about the 1% of traditional chemical dephosphorization process dosage, and is generated without sludge.
Description of the drawings
Fig. 1 is the schematic diagram of equipment that is provided by the invention a kind of while removing COD and total phosphorus.
Fig. 2 is the multistage catalytic embodiment schematic diagram of equipment that is provided by the invention a kind of while removing COD and total phosphorus.
In attached drawing, parts list represented by the reference numerals is as follows：
1st, dosing tank；2nd, sewage pump；3rd, slot is premixed；4th, packed tower；5th, clear water reserviors；6th, constant displacement pump；7th, cleaning pump；
10th, equipment water outlet；20th, back-flushing is intake；21st, back-flushing water outlet；31st, the first premix slot；41st, the first packed tower；32nd, second is pre-
Mixed slot；42nd, the second packed tower.
Specific embodiment
For a better understanding of the present invention, below in conjunction with the accompanying drawings and the specific embodiment content that the present invention is furture elucidated,
But present disclosure is not limited solely to the following examples.
As shown in Figure 1, the present invention provides equipment that is a kind of while removing COD and total phosphorus, at least one sewage
Unit is managed, the sewage treatment unit includes packed tower 4 and premixing device,
4 top of packed tower is equipped with water inlet, and bottom is equipped with water outlet, catalytic filler is equipped in the packed tower 4,
The premixing device includes dosing tank 1, constant displacement pump 6, sewage pump 2 and premix slot 3, and the premix slot 3 passes through
Pipeline is connected with the sewage pump 2, and the dosing tank 1 is connected by the constant displacement pump 6 with the premix slot 3, described pre-
Mixed slot 3 is connected by pipeline with the water inlet of the packed tower 4.
As shown in Fig. 2, the present invention provides equipment that is a kind of while removing COD and total phosphorus, the sewage treatment unit
Quantity is two, and the water outlet of the packed tower of one of them sewage treatment unit and another described sewage
The sewage pump of processing unit is connected by pipeline.
Specifically, further including backwashing equipment, the backwashing equipment is made of cleaning pump and filtered water tank, the packed tower
Bottom is equipped with backwash water inlet and top is equipped with backwash water outlet, and described flushing pump one end is connected with filtered water tank, the other end and institute
State the backwash water inlet connection of packed tower.
Compared with prior art, advantages of the present invention is：
(1) combined oxidant+catalytic filler forms efficient decarburization dephosphorization new method, and water outlet total phosphorus is up to earth's surface three classes water gauge
Accurate (≤0.3m/L)；
(2) added amount of chemical is few, substantially reduces operating cost；
(3) sludge is not generated, non-secondary pollution incidentally removes organic matter, sterilization.
Embodiment 1：
As shown in Figure 1, certain sewage is promoted to by sewage pump 2 in premix slot 3, barium ferrate is stored by dosing tank 1,
It is delivered to by constant displacement pump 6 in premix slot 3, sewage is reacted with barium ferrate in slot 3 is premixed, and is entered after reaction by water inlet
Catalytic filler tower 4, the modified filler of the interior filling certain volume of the catalytic filler tower 4, wherein being respectively as mass fraction：It is living
Property charcoal 60%, iron hydroxide 30%, manganese dioxide 10%.The filling adsorption filters off depollution object, and treated, and water passes through
Water outlet is discharged.
Using provided by the invention a kind of while remove the device and method of COD and total phosphorus sewage treatment plant is treated
Sewage carries out advanced treating, and water quality significantly improves.Specific wastewater treatment efficiency is as shown in the table：
| Project | COD(mg/L) | TP(mg/L) |
| Influent quality | 50-60 | 0.5-2.5 |
| Effluent quality of the present invention | ≤30 | ≤0.1 |
| Removal rate of the present invention | 50% | 90% |
Embodiment 2：
As shown in Fig. 2, certain sanitary sewage is promoted to by sewage pump in the first premix slot 31, Na2Fe04 is by dosing
Case 1 is stored, and stabilization aid sodium metasilicate is additionally added into dosing tank 1, is delivered to by constant displacement pump 6 in the first premix slot 31, sewage
It is reacted with Na2Fe04 in the first premix slot 31, by water inlet into the first catalytic filler tower 41 after reaction, described first
The modified filler of filling certain volume in catalytic filler tower, wherein being respectively as mass fraction：Activated carbon 60%, iron hydroxide
30%, silver-colored simple substance 10%.The filling adsorption filters off depollution object, and treated, and water is discharged by water outlet.By water outlet
The sewage of discharge is promoted to again by sewage pump in the second premix slot 32, and Na2Fe04 is stored by dosing tank 1, by fixed
Amount pump 6 is delivered in the second premix slot 32, and sewage is reacted with Na2Fe04 in the second premix slot 32, passes through water inlet after reaction
Into the second catalytic tower 42, the modified filler of filling certain volume, wherein activated carbon 70% in the second catalytic filler tower 42,
Iron hydroxide 20%, titanium simple substance 10%.The filling adsorption filters off depollution object, and treated, and water is set by water outlet
Standby water outlet 10.
Compared with the sewage handled by sewage treatment plant's conventional method, the sewage quality handled by the present invention significantly improves.
Specific wastewater treatment efficiency is as shown in the table：
Embodiment 3：
As shown in Fig. 2, breeding wastewater is promoted to by sewage pump in premix slot, potassium ferrate is stored by dosing tank 1,
Stabilization aid sodium metasilicate is additionally added into dosing tank 1, is delivered to by constant displacement pump 6 in the first premix slot 31, sewage and ferric acid
Potassium reacts in the first premix slot 31, enters the first catalytic filler tower 41, first catalytic filler by water inlet after reaction
The modified filler of filling certain volume in tower 41, wherein being respectively as mass fraction：Activated carbon 80%, iron hydroxide 10%,
Manganese simple substance 10%.The filling adsorption filters off depollution object, and treated, and water is discharged by water outlet.By water outlet discharge
Sewage is promoted to by sewage pump in the second premix slot 32, and potassium ferrate is stored by dosing tank 1, is conveyed by constant displacement pump 6
Into the second premix slot 32, sewage is reacted with potassium ferrate in the second premix slot 32, enters second by water inlet after reaction
Catalytic filler tower 42, the wherein modified filler of the interior filling certain volume of the second catalytic filler tower 42, activated carbon 70%, hydrogen-oxygen
Change iron 25%, silver-colored simple substance 5%.The filling adsorption filters off depollution object, and treated, and water is gone out by water outlet progress equipment
Water 10.
In addition, every 2 days, the clear water in clear water reserviors 5 is subjected to back-flushing water inlet 20, the back-flushing using cleaning pump 7
It washes away the filler in packed tower 41 and 42 at a high speed along the negative direction in drainage flow direction, then carries out back-flushing water outlet 21.It is described
Backwash step can prevent catalytic filler tower 41 and 42 to be contaminated particle and block, and filter resistance increase declines flow.Instead
Washing time 15-30min, by electric control system controls.
Compared with the sewage handled by sewage treatment plant's conventional method, the sewage quality handled by the present invention significantly improves.
Specific wastewater treatment efficiency is as shown in the table：
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modifications, equivalent replacements and improvements are made should all be included in the protection scope of the present invention.
Claims (4)
1. equipment that is a kind of while removing COD and total phosphorus, which is characterized in that including at least one sewage treatment unit, the dirt
Water treatment unit includes packed tower (4) and premixing device,
Water inlet is equipped at the top of the packed tower (4), bottom is equipped with water outlet, catalytic filler is equipped in the packed tower (4),
The premixing device includes dosing tank (1), constant displacement pump (6), sewage pump (2) and premix slot (3), the premix slot
(3) it is connected by pipeline with the sewage pump (2), the dosing tank (1) passes through the constant displacement pump (6) and the premix slot
(3) connect, the premix slot (3) is connected by pipeline with the water inlet of the packed tower (4).
2. equipment that is according to claim 1 a kind of while removing COD and total phosphorus, it is characterised in that：The packed tower
Filling height is less than or equal to the 70% of the filler tower height degree.
3. equipment that is according to claim 1 a kind of while removing COD and total phosphorus, it is characterised in that：Further include backwash
Equipment, the backwashing equipment are made of cleaning pump and filtered water tank, and the packed tower lower end is equipped with backwash water inlet and upper end is set
There is backwash water outlet, described flushing pump one end is connected with filtered water tank, and the other end is connected with the backwash water inlet of the packed tower.
4. equipment that is a kind of according to claim 1-3 any one of them while removing COD and total phosphorus, it is characterised in that：It is described
The quantity of sewage treatment unit is two, and the water outlet of the packed tower (4) of one of them sewage treatment unit
Mouth is connected with the sewage pump (2) of sewage treatment unit another described by pipeline.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112850680A (en) * | 2021-02-26 | 2021-05-28 | 桂林理工大学 | Method for preparing anhydrous iron phosphate by ferrate self-reduction reaction |
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