CN108314151A - The method and apparatus of total nitrogen and total organic carbon in a kind of removal rolling effluent - Google Patents
The method and apparatus of total nitrogen and total organic carbon in a kind of removal rolling effluent Download PDFInfo
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- CN108314151A CN108314151A CN201710034776.9A CN201710034776A CN108314151A CN 108314151 A CN108314151 A CN 108314151A CN 201710034776 A CN201710034776 A CN 201710034776A CN 108314151 A CN108314151 A CN 108314151A
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- rolling effluent
- rolling
- effluent
- oxidizing tower
- organic carbon
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 146
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 102
- 238000005096 rolling process Methods 0.000 title claims abstract description 101
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 56
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 34
- 230000001590 oxidative effect Effects 0.000 claims abstract description 56
- 238000006555 catalytic reaction Methods 0.000 claims abstract description 55
- 238000004062 sedimentation Methods 0.000 claims abstract description 41
- 238000003756 stirring Methods 0.000 claims abstract description 41
- 239000003054 catalyst Substances 0.000 claims abstract description 34
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 31
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 31
- 239000011733 molybdenum Substances 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 24
- 239000003814 drug Substances 0.000 claims abstract description 24
- 239000010959 steel Substances 0.000 claims abstract description 24
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 18
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000007789 gas Substances 0.000 claims abstract description 8
- 229940079593 drug Drugs 0.000 claims abstract description 5
- 238000001556 precipitation Methods 0.000 claims abstract description 5
- 239000000243 solution Substances 0.000 claims description 33
- 239000003610 charcoal Substances 0.000 claims description 20
- 238000007598 dipping method Methods 0.000 claims description 16
- 239000002253 acid Substances 0.000 claims description 15
- 238000002360 preparation method Methods 0.000 claims description 13
- 239000002250 absorbent Substances 0.000 claims description 12
- 230000002745 absorbent Effects 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 12
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 10
- 235000013162 Cocos nucifera Nutrition 0.000 claims description 10
- 244000060011 Cocos nucifera Species 0.000 claims description 10
- APUPEJJSWDHEBO-UHFFFAOYSA-P ammonium molybdate Chemical compound [NH4+].[NH4+].[O-][Mo]([O-])(=O)=O APUPEJJSWDHEBO-UHFFFAOYSA-P 0.000 claims description 10
- 229940010552 ammonium molybdate Drugs 0.000 claims description 10
- 235000018660 ammonium molybdate Nutrition 0.000 claims description 10
- 239000011609 ammonium molybdate Substances 0.000 claims description 10
- 238000004140 cleaning Methods 0.000 claims description 8
- 230000004913 activation Effects 0.000 claims description 7
- 238000002803 maceration Methods 0.000 claims description 7
- 238000012216 screening Methods 0.000 claims description 7
- 238000005245 sintering Methods 0.000 claims description 7
- 238000010792 warming Methods 0.000 claims description 7
- 238000001354 calcination Methods 0.000 claims description 6
- 238000010348 incorporation Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 229960000583 acetic acid Drugs 0.000 claims description 5
- 239000003153 chemical reaction reagent Substances 0.000 claims description 5
- 239000012153 distilled water Substances 0.000 claims description 5
- 239000012362 glacial acetic acid Substances 0.000 claims description 5
- 239000002244 precipitate Substances 0.000 claims description 5
- 230000001376 precipitating effect Effects 0.000 claims description 5
- RBTBFTRPCNLSDE-UHFFFAOYSA-N 3,7-bis(dimethylamino)phenothiazin-5-ium Chemical compound C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 RBTBFTRPCNLSDE-UHFFFAOYSA-N 0.000 claims description 4
- 238000013019 agitation Methods 0.000 claims description 4
- 229960000907 methylthioninium chloride Drugs 0.000 claims description 4
- 238000001179 sorption measurement Methods 0.000 claims description 4
- 239000003978 infusion fluid Substances 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 230000001681 protective effect Effects 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 16
- 229910052742 iron Inorganic materials 0.000 description 8
- 238000011161 development Methods 0.000 description 6
- 230000018109 developmental process Effects 0.000 description 6
- 239000002351 wastewater Substances 0.000 description 6
- 238000001035 drying Methods 0.000 description 4
- 230000003197 catalytic effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000000274 adsorptive effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material 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
- 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
-
- 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
- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/24—Chromium, molybdenum or tungsten
- B01J23/28—Molybdenum
-
- 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- 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
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
-
- 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
- C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
-
- 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
- C02F2209/16—Total nitrogen (tkN-N)
-
- 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
- C02F2209/20—Total organic carbon [TOC]
-
- 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
- C02F2209/44—Time
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)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Catalysts (AREA)
Abstract
A kind of method of total nitrogen and total organic carbon in removal rolling effluent, it is characterized in that, rolling effluent pump enters the integral type stirring sedimentation basin for the antiformin for adding drug concentration 7~10%, the front that rolling effluent stirs sedimentation basin in integral type is stirred, it is precipitated at rear portion, rolling effluent after mixed precipitation enters the catalysis oxidizing tower for being built-in with 70%~90% activated carbon supported molybdenum catalyst for accounting for catalysis oxidizing tower total volume from catalysis oxidizing tower lower part side, and ozone enters from the bottom of catalysis oxidizing tower, the co-flow of ozone gas and rolling effluent all from top to bottom, processed rolling effluent is flowed out from the top of catalysis oxidizing tower, blowoff basin is entered by two-stage hoisting pump again.The present invention can be formed economic, efficient technical solution and respond actively increasingly strict legislations of environmental protection to reduce environmental pollution according to rolling effluent water quality and quantity situation.Therefore the invention belongs to the environmentally protective production-process systems of steel.
Description
Technical field
The invention belongs to water-treatment technology fields, and in particular to a kind of side removing total nitrogen and total organic carbon in rolling effluent
Method and device.
Background technology
Steel and iron industry is a high energy consumption, high resource, the industry of high pollution, and water resources consumption is huge, accounts for about national work
The 14% of industry water consumption.
In July, 2005, National Development and Reform Committee put into effect《Steel industry development policies》, to development of iron ＆ steel industry circular economy, section
About the energy and resource, walk sustainable development path propose higher target and more specifically require, it is in short supply in global resources
In the case of, low energy consumption, low stain, low emission become social development needs.
The unit water consumption of Iron and Steel Enterprises in China remains above the level of external advanced iron and steel enterprise, further reduces steel
Enterprise's ton steel consumes new water, improves the cyclic utilization rate of iron and steel enterprise's water, reinforces the integrated treatment of iron and steel enterprise's waste water and returns
With being the key that Iron and Steel Enterprises in China realizes one of sustainable development.
In steel rolling process production process, steel need to use the iron scale of hydrochloric acid technique removal steel surface, and acid
It needs to be rinsed steel surface with pure water after washing, to clean the remaining acid solution of steel surface.Therefore acid is generated therewith
Waste liquid and acidic rinse water are washed, the spent acid in usual acid cleaning process is returned after acid purification system is regenerated and reused mostly；
Poaching wastewater can not carry out acid regeneration since acid concentration is too low, can only discharge.
Up to the present, there are no for the method for removing total nitrogen and total organic carbon in rolling effluent.For this purpose, this field is compeled
It is essential and wants a kind of method removing total nitrogen and total organic carbon in rolling effluent, this method can be according to rolling effluent water quality and quantity feelings
Condition forms economic, efficient technical solution and responds actively increasingly strict legislations of environmental protection to reduce environmental pollution.
Invention content
To cope with the demand, the purpose of the present invention is exactly to be to provide a kind of rolling effluent removal total nitrogen and total organic carbon
Technical solution, the program can form economic, efficient technical solution, to reduce ring according to rolling effluent water quality and quantity situation
Border is polluted, and increasingly strict legislations of environmental protection is responded actively.Therefore the invention belongs to the environmentally protective production-process systems of steel.
To achieve the purpose of the present invention, the technical solution adopted by the present invention is as follows：
A kind of method of total nitrogen and total organic carbon in removal rolling effluent, it is heavy using being stirred including medicine system, integral type
Shallow lake pond, catalysis oxidizing tower and its activated carbon supported molybdenum catalyst system, which is characterized in that
The water quality characteristic of the rolling effluent is：Suspended matter is 45~82mg/L, and total nitrogen is 9~20mg/L, total organic carbon
For 8~16mg/L,
The rolling effluent enters integral type by intake pump and stirs sedimentation basin, and medicine system stirs sedimentation basin to integral type
The antiformin (i.e. NaClO) of drug concentration 7~10% is added, dosage is 560~1850mg/L,
The front that antiformin solution and rolling effluent stir sedimentation basin in integral type is sufficiently mixed by mechanical agitation,
Rear portion settling zone precipitates,
Rolling effluent after mixed precipitation enters from catalysis oxidizing tower lower part side is built-in with activated carbon supported molybdenum catalyst
Catalysis oxidizing tower, and ozone enters from the bottom of catalysis oxidizing tower, ozone gas and rolling effluent all from top to bottom in the same direction
Stream,
The activated carbon supported molybdenum catalyst accounts for the 70%~90% of catalysis oxidizing tower total volume,
Processed rolling effluent is flowed out from the top of catalysis oxidizing tower, then enters blowoff basin by two-stage hoisting pump.
According to a kind of method removing total nitrogen and total organic carbon in rolling effluent of the present invention, which is characterized in that
It is sedimentation basin that integral type stirring sedimentation basin front, which is double-deck or three layers of mechanical agitator, rear portion, is placed in pond
The inclination angle of inclined plate, inclined plate is 56~59 degree.
According to a kind of method removing total nitrogen and total organic carbon in rolling effluent of the present invention, which is characterized in that
Rotating speed is 80~150 revs/min, and preferably rotating speed is 105~120 revs/min.
According to a kind of method removing total nitrogen and total organic carbon in rolling effluent of the present invention, which is characterized in that
Added amount of chemical is preferably 830~1270mg/L, and incorporation time is 2~5 minutes, preferably 3~4 minutes.Then
It is precipitated in rear portion settling zone, the sedimentation time is 24~53 minutes, and the preferably time is 36~42 minutes.
According to a kind of method removing total nitrogen and total organic carbon in rolling effluent of the present invention, which is characterized in that
Medicament incorporation time is 3~4 minutes, and the sedimentation time is 36~42 minutes.
According to a kind of method removing total nitrogen and total organic carbon in rolling effluent of the present invention, which is characterized in that pass through
After integral type stirs sedimentation basin, rolling effluent enters catalysis oxidizing tower by level-one elevator pump.Rolling effluent is from catalytic tower lower part
Left side enters, and ozone enters from the bottom of catalysis oxidizing tower, and ozone gas and rolling effluent are all concurrent from top to bottom.
Catalysis oxidizing tower is cylindrical type, and material is the stainless steel of 316L, ratio of height to diameter 7：1.Catalysis oxidizing tower is built-in with activated carbon supported
Molybdenum catalyst, activated carbon supported molybdenum catalyst of the total volume 70%~90%.
According to a kind of method removing total nitrogen and total organic carbon in rolling effluent of the present invention, which is characterized in that
The preparation method of the activated carbon supported molybdenum catalyst is as follows：
1) screening of activated carbon；
2) acid activation and cleaning of carrier；
3) preparation of maceration extract：Preparation solution concentration is 7~9mol/L ammonium molybdate solutions, and 1 is then added in ammonium molybdate
For the hexa of~3mg/L as precipitating reagent, stirring, which is formed, is mixed with dipping solution；
4) dipping of activated carbon：Activated carbon presses solid-to-liquid ratio 1:The ratio of 6-9 is placed in above-mentioned hybrid infusion solution, dipping
It is taken out after 6-9 hours, at room temperature naturally dry, forms absorbent charcoal carrier；
5) high temperature sintering：The absorbent charcoal carrier impregnated is placed on drying in air dry oven, after being warming up to 600-670 DEG C
Constant temperature calcining, then natural cooling, is prepared activated carbon supported molybdenum catalyst.
Activated carbon supported molybdenum catalyst can be converted into the free radical with Strong oxdiative ability with ozone, organic to high stability
The decomposition efficiency of pollutant is higher than simple ozone oxidation.
According to a kind of method removing total nitrogen and total organic carbon in rolling effluent of the present invention, which is characterized in that
In the screening of step 1) activated carbon, cocoanut active charcoal is selected, grain size is 1.5~2.5mm, specific surface area is 950~
1230m2/g, methylene blue adsorption value are 123~143mg/g.
According to a kind of method removing total nitrogen and total organic carbon in rolling effluent of the present invention, which is characterized in that in step
The acid activation and cleaning of rapid 2) carrier：After coconut activated high-area carbon stirs 1 hour in the 13~16% of 45-60 DEG C glacial acetic acid
It takes out 3-5 times wash with distilled water, is then dried 2.5-4 hours in 110-120 DEG C of air dry oven, it is spare after cooling.
According to a kind of method removing total nitrogen and total organic carbon in rolling effluent of the present invention, which is characterized in that
In step 5) high temperature sintering, the absorbent charcoal carrier impregnated is placed in 120-135 DEG C of air dry oven dry
2-3 hours, it is warming up to 600-670 DEG C with 10~12 DEG C/min, constant temperature calcining 3~5 hours, then natural cooling, is prepared
Activated carbon supported molybdenum catalyst.
According to a kind of method removing total nitrogen and total organic carbon in rolling effluent of the present invention, which is characterized in that
In the preparation of step 3) maceration extract：30-40min is stirred with the speed mechanical that 65-75 per minute turns, stirring forms mixed
Close dipping solution.
According to a kind of method removing total nitrogen and total organic carbon in rolling effluent of the present invention, which is characterized in that
Rolling effluent is 32~56 minutes in the catalysis oxidizing tower residence time, and the preferably time is 45~51 minutes.Then it rolls
Steel waste water is flowed out from the top of catalysis oxidizing tower, then enters blowoff basin by two-stage hoisting pump, then in qualified discharge.
According to a kind of method removing total nitrogen and total organic carbon in rolling effluent of the present invention, which is characterized in that
Rolling effluent suspended matter after treatment be 7~15mg/L, total nitrogen be 2~7mg/L, total organic carbon be 5~
12mg/L。
The present invention provides a kind of system removing total nitrogen and total organic carbon in rolling effluent again, and its technical solution is as follows：
The system of total nitrogen and total organic carbon in a kind of removal rolling effluent sequentially includes intake pump, integral type stirring precipitation
Pond, the medicine system for being integrally connected formula stirring sedimentation basin, level-one elevator pump, catalysis oxidizing tower, two-stage hoisting pump and discharge bay,
It is characterized in that,
The rolling effluent enters integral type by intake pump and stirs sedimentation basin,
It is double-deck or three layers of mechanical agitator that integral type, which stirs sedimentation basin front, and rear portion is the sedimentation basin of built-in inclined plate, tiltedly
The inclination angle of plate is 56~59 degree,
The medicament of the medicine system is the antiformin of concentration 7~10%,
Rolling effluent enters from catalysis oxidizing tower lower part side, and ozone enters from the bottom of catalysis oxidizing tower, ozone gas
Body and rolling effluent form the concurrent from catalysis oxidizing tower lower to upper part,
Rolling effluent is flowed out from the top of catalysis oxidizing tower, then enters blowoff basin by two-stage hoisting pump.
According to a kind of system removing total nitrogen and total organic carbon in rolling effluent of the present invention, which is characterized in that
The catalysis oxidizing tower is the stainless head tower of cylindrical type, ratio of height to diameter 6-8：1, catalysis oxidizing tower, which is built-in with, to be accounted in tower always
The activated carbon supported molybdenum catalyst of the 70%~90% of volume.
This patent is directed to the water quality characteristic of rolling effluent, and exploitation is prepared for activated carbon supported molybdenum catalyst, the system of catalyst
It is standby：1) screening of activated carbon：It is 1.5~2.5mm to select cocoanut active charcoal, grain size, and specific surface area is 950~1230m2/ g, it is sub-
Methyl blue adsorptive value is 123~143mg/g.2) acid activation and cleaning of carrier：Coconut activated high-area carbon 50 DEG C 13~
It is stirred 1 hour in 16% glacial acetic acid, 3 times wash with distilled water after taking-up, then drying 3 is small in 120 DEG C of air dry ovens
When, it is spare after cooling.3) preparation of maceration extract：Preparation solution concentration is 7~9mol/L ammonium molybdate solutions, then in ammonium molybdate
The hexa of 1~3mg/L is added as precipitating reagent, 30min is stirred with 70 turns of speed mechanical per minute, forms mixing
Dipping solution.4) dipping of activated carbon：Activated carbon presses solid-to-liquid ratio 1:7 ratio is placed in dipping solution, is impregnated 7 hours；So
Absorbent charcoal carrier is taken out afterwards, at room temperature naturally dry.5) high temperature sintering：The absorbent charcoal carrier impregnated is placed on 130 DEG C
Dry 2 hours in the air dry oven of condition, 650 DEG C are warming up to 10~12 DEG C/min, constant temperature calcining 3~5 hours, then from
It is so cooling, activated carbon supported molybdenum catalyst is prepared.
Rolling effluent is 32~56 minutes in the catalysis oxidizing tower residence time, and the preferably time is 45~51 minutes.Then it rolls
Steel waste water is flowed out from the top of catalysis oxidizing tower, then enters blowoff basin by two-stage hoisting pump, then in qualified discharge.
Rolling effluent suspended matter after treatment be 7~15mg/L, total nitrogen be 2~7mg/L, total organic carbon be 5~
12mg/L。
Description of the drawings
Fig. 1 is the system schematic of total nitrogen and total organic carbon in a kind of removal rolling effluent of the present invention.
In figure, 1 is intake pump 2, is medicine system, and 3 stir sedimentation basin for integral type, and 4 be level-one elevator pump, and 5 be catalysis
Oxidizing tower, 6 be activated carbon supported molybdenum catalyst, and 7 pump for two-stage hoisting, and 8 be discharge bay.
Specific implementation mode
Embodiment
Embodiment 1：
The system of total nitrogen and total organic carbon in a kind of removal rolling effluent, including intake pump, medicine system and medicament, one
Formula stirs sedimentation basin, level-one elevator pump, catalysis oxidizing tower, activated carbon supported molybdenum catalyst, two-stage hoisting pump, discharge bay.
The water quality characteristic of the rolling effluent：Suspended matter is 76mg/L, total nitrogen 18mg/L, total organic carbon 15mg/L.
The rolling effluent enters integral type by intake pump and stirs sedimentation basin.It is bilayer that integral type, which stirs sedimentation basin front,
Or three layers of mechanical agitator, rotating speed are 118 revs/min, rear portion is sedimentation basin, inclined plate is placed in pond, the inclination angle of inclined plate is 56 degree.
Medicine system is Automatic Dosing, and medicament is the antiformin of concentration 9%, dosage 1250mg/L.It antiformin solution and rolls
The front that steel waste water stirs sedimentation basin in integral type is sufficiently mixed by mechanical agitation, and incorporation time is 4 minutes.Then at rear portion
Settling zone precipitates, and the sedimentation time is 41 minutes.
After integral type stirs sedimentation basin, rolling effluent enters catalysis oxidizing tower by level-one elevator pump.Rolling effluent
Enter from catalytic tower lower left side, and ozone enters from the bottom of catalysis oxidizing tower, ozone gas and rolling effluent are all under
To upper concurrent.Catalysis oxidizing tower is cylindrical type, and material is the stainless steel of 316L, ratio of height to diameter 7：1.Built in catalysis oxidizing tower
Active charcoal loads molybdenum catalyst, activated carbon supported molybdenum catalyst of the total volume 85%.
This patent is directed to the water quality characteristic of rolling effluent, and exploitation is prepared for activated carbon supported molybdenum catalyst, the system of catalyst
It is standby：1) screening of activated carbon：Select cocoanut active charcoal, grain size 2.1mm, specific surface area 1120m2/ g, methylene blue adsorption number
Value is 131mg/g.2) acid activation and cleaning of carrier：It is small that coconut activated high-area carbon stirs 1 in 50 DEG C of 14% glacial acetic acid
When, 3 times wash with distilled water after taking-up, then dried 3 hours in 120 DEG C of air dry ovens, it is spare after cooling.3) maceration extract
Preparation：Preparation solution concentration is 9mol/L ammonium molybdate solutions, and the hexa that 3mg/L is then added in ammonium molybdate is made
For precipitating reagent, 30min is stirred with 70 turns of speed mechanical per minute, is formed and is mixed with dipping solution.4) dipping of activated carbon：Activity
Charcoal presses solid-to-liquid ratio 1:7 ratio is placed in dipping solution, is impregnated 7 hours；Then absorbent charcoal carrier is taken out, at room temperature certainly
So dry.5) high temperature sintering：The absorbent charcoal carrier impregnated is placed on drying 2 hours in the air dry oven of 130 DEG C of conditions, with
10 DEG C/min is warming up to 650 DEG C, and constant temperature calcining 4 hours, then natural cooling, is prepared activated carbon supported molybdenum catalyst.
Rolling effluent is 46 minutes in the catalysis oxidizing tower residence time.Then overhead stream of the rolling effluent from catalysis oxidizing tower
Go out, then blowoff basin is entered by two-stage hoisting pump, then in qualified discharge.
Rolling effluent suspended matter after treatment is 9mg/L, total nitrogen 2mg/L, total organic carbon 6mg/L.Embodiment
2：
The system of total nitrogen and total organic carbon in a kind of removal rolling effluent, including intake pump, medicine system and medicament, one
Formula stirs sedimentation basin, level-one elevator pump, catalysis oxidizing tower, activated carbon supported molybdenum catalyst, two-stage hoisting pump, discharge bay.
The water quality characteristic of the rolling effluent：Suspended matter is 55mg/L, total nitrogen 14mg/L, total organic carbon 13mg/L.
The rolling effluent enters integral type by intake pump and stirs sedimentation basin.It is bilayer that integral type, which stirs sedimentation basin front,
Or three layers of mechanical agitator, rotating speed are 140 revs/min, rear portion is sedimentation basin, inclined plate is placed in pond, the inclination angle of inclined plate is 57 degree.
Medicine system is Automatic Dosing, and medicament is the antiformin of concentration 7%, dosage 1570mg/L.It antiformin solution and rolls
The front that steel waste water stirs sedimentation basin in integral type is sufficiently mixed by mechanical agitation, and incorporation time is 2 minutes.Then at rear portion
Settling zone precipitates, and the sedimentation time is 33 minutes.
After integral type stirs sedimentation basin, rolling effluent enters catalysis oxidizing tower by level-one elevator pump.Rolling effluent
Enter from catalytic tower lower left side, and ozone enters from the bottom of catalysis oxidizing tower, ozone gas and rolling effluent are all under
To upper concurrent.Catalysis oxidizing tower is cylindrical type, and material is the stainless steel of 316L, ratio of height to diameter 7：1.Built in catalysis oxidizing tower
Active charcoal loads molybdenum catalyst, activated carbon supported molybdenum catalyst of the total volume 90%.
This patent is directed to the water quality characteristic of rolling effluent, and exploitation is prepared for activated carbon supported molybdenum catalyst, the system of catalyst
It is standby：1) screening of activated carbon：Select cocoanut active charcoal, grain size 1.9mm, specific surface area 980m2/ g, methylene blue adsorption value
For 132mg/g.2) acid activation and cleaning of carrier：Coconut activated high-area carbon stirs 1 hour in 50 DEG C of 16% glacial acetic acid,
3 times wash with distilled water after taking-up, then dried 3 hours in 120 DEG C of air dry ovens, it is spare after cooling.3) maceration extract
It prepares：Preparation solution concentration is 9mol/L ammonium molybdate solutions, and the hexa conduct of 3mg/L is then added in ammonium molybdate
Precipitating reagent stirs 30min with 70 turns of speed mechanical per minute, is formed and be mixed with dipping solution.4) dipping of activated carbon：Activated carbon
By solid-to-liquid ratio 1:7 ratio is placed in dipping solution, is impregnated 7 hours；Then absorbent charcoal carrier is taken out, it is natural at room temperature
It dries.5) high temperature sintering：The absorbent charcoal carrier impregnated is placed on drying 2 hours in the air dry oven of 130 DEG C of conditions, with 11
DEG C/min is warming up to 650 DEG C, constant temperature calcining 5 hours, then natural cooling, is prepared activated carbon supported molybdenum catalyst.
Rolling effluent is 41 minutes in the catalysis oxidizing tower residence time, and the preferably time is 45~51 minutes.Then steel rolling is useless
Water is flowed out from the top of catalysis oxidizing tower, then enters blowoff basin by two-stage hoisting pump, then in qualified discharge.
Rolling effluent suspended matter after treatment is 13mg/L, total nitrogen 6mg/L, total organic carbon 10mg/L.
The technical solution of a kind of rolling effluent removal total nitrogen and total organic carbon according to the present invention, can be according to rolling effluent water
Matter water situation forms economic, efficient technical solution and responds actively increasingly strict environmental protection to reduce environmental pollution
Regulation.Therefore the invention belongs to the environmentally protective production-process systems of steel.
Claims (14)
1. a kind of method of total nitrogen and total organic carbon in removal rolling effluent, using including medicine system, integral type stirring precipitation
Pond, catalysis oxidizing tower and its activated carbon supported molybdenum catalyst system, which is characterized in that
The water quality characteristic of the rolling effluent is：Suspended matter be 45~82mg/L, total nitrogen be 9~20mg/L, total organic carbon be 8~
16mg/L,
The rolling effluent enters integral type by intake pump and stirs sedimentation basin, and medicine system adds integral type stirring sedimentation basin
The antiformin of drug concentration 7~10%, i.e. NaClO, dosage are 560~1850mg/L,
The front that antiformin solution and rolling effluent stir sedimentation basin in integral type is sufficiently mixed by mechanical agitation, at rear portion
Settling zone precipitates,
Rolling effluent after mixed precipitation enters from catalysis oxidizing tower lower part side is built-in with urging for activated carbon supported molybdenum catalyst
Change oxidizing tower, and ozone enters from the bottom of catalysis oxidizing tower, the co-flow of ozone gas and rolling effluent all from top to bottom,
The activated carbon supported molybdenum catalyst accounts for the 70%~90% of catalysis oxidizing tower total volume,
Processed rolling effluent is flowed out from the top of catalysis oxidizing tower, into blowoff basin.
2. a kind of method removing total nitrogen and total organic carbon in rolling effluent as described in claim 1, which is characterized in that
It is sedimentation basin that integral type stirring sedimentation basin front, which is double-deck or three layers of mechanical agitator, rear portion, and inclined plate is placed in pond,
The inclination angle of inclined plate is 56~59 degree.
3. a kind of method removing total nitrogen and total organic carbon in rolling effluent as described in claim 1, which is characterized in that
Agitator speed is 80~150 revs/min, and preferably rotating speed is 105~120 revs/min.
4. a kind of method removing total nitrogen and total organic carbon in rolling effluent as described in claim 1, which is characterized in that
Added amount of chemical is 830~1270mg/L, and blender incorporation time is 2~5 minutes, preferably 3~4 minutes.Then exist
Rear portion settling zone precipitates, and the sedimentation time is 24~53 minutes, and the preferably time is 36~42 minutes.
5. a kind of method removing total nitrogen and total organic carbon in rolling effluent as described in claim 1, which is characterized in that
Blender medicament incorporation time is 3~4 minutes, and the sedimentation time is 36~42 minutes.
6. a kind of method removing total nitrogen and total organic carbon in rolling effluent as described in claim 1, which is characterized in that
The preparation method of the activated carbon supported molybdenum catalyst is as follows：
1) screening of activated carbon；
2) acid activation and cleaning of carrier；
3) preparation of maceration extract：Preparation solution concentration be 7~9mol/L ammonium molybdate solutions, then in ammonium molybdate be added 1~
For the hexa of 3mg/L as precipitating reagent, stirring, which is formed, is mixed with dipping solution；
4) dipping of activated carbon：Activated carbon presses solid-to-liquid ratio 1:The ratio of 6-9 is placed in above-mentioned hybrid infusion solution, impregnates 6-9
It is taken out after hour, at room temperature naturally dry, forms absorbent charcoal carrier；
5) high temperature sintering：The absorbent charcoal carrier impregnated is placed in air dry oven to dry, constant temperature after being warming up to 600-670 DEG C
Roasting, then natural cooling, is prepared activated carbon supported molybdenum catalyst.
7. a kind of method removing total nitrogen and total organic carbon in rolling effluent as described in claim 1, which is characterized in that
In the screening of step 1) activated carbon, cocoanut active charcoal is selected, grain size is 1.5~2.5mm, specific surface area is 950~
1230m2/g, methylene blue adsorption value are 123~143mg/g.
8. a kind of method removing total nitrogen and total organic carbon in rolling effluent as described in claim 1, which is characterized in that
In the acid activation and cleaning of step 2) carrier：Coconut activated high-area carbon stirs in the 13~16% of 45-60 DEG C glacial acetic acid
It takes out after mixing 1 hour 3-5 times wash with distilled water, is then dried 2.5-4 hours in 110-120 DEG C of air dry oven, it is cooling
It is spare afterwards.
9. a kind of method removing total nitrogen and total organic carbon in rolling effluent as described in claim 1, which is characterized in that
In step 5) high temperature sintering, it is small that the absorbent charcoal carrier impregnated is placed in 120-135 DEG C of air dry oven dry 2-3
When, it is warming up to 600-670 DEG C with 10~12 DEG C/min, constant temperature calcining 3~5 hours, then natural cooling, is prepared activated carbon
Load molybdenum catalyst.
10. a kind of method removing total nitrogen and total organic carbon in rolling effluent as described in claim 1, which is characterized in that
In the preparation of step 3) maceration extract：Blender stirs 30-40min with the speed mechanical that 65-75 per minute turns, and stirring is formed
It is mixed with dipping solution.
11. a kind of method removing total nitrogen and total organic carbon in rolling effluent as described in claim 1, which is characterized in that
Rolling effluent is 32~56 minutes in the catalysis oxidizing tower residence time, and the preferably time is 45~51 minutes.Then steel rolling is useless
Water is flowed out from the top of catalysis oxidizing tower, into blowoff basin qualified discharge.
12. a kind of method removing total nitrogen and total organic carbon in rolling effluent as described in claim 1, which is characterized in that
Rolling effluent suspended matter after treatment is 7~15mg/L, and total nitrogen is 2~7mg/L, and total organic carbon is 5~12mg/L.
13. the system of total nitrogen and total organic carbon in a kind of removal rolling effluent, its technical solution is as follows：
The system of total nitrogen and total organic carbon in a kind of removal rolling effluent sequentially includes intake pump, integral type stirring sedimentation basin, even
Connect medicine system, level-one elevator pump, catalysis oxidizing tower, two-stage hoisting pump and the discharge bay of integral type stirring sedimentation basin, feature
It is,
The rolling effluent enters integral type by intake pump and stirs sedimentation basin,
It is double-deck or three layers of mechanical agitator that integral type, which stirs sedimentation basin front, and rear portion is the sedimentation basin of built-in inclined plate, inclined plate
Inclination angle is 56~59 degree,
The medicament of the medicine system is the antiformin of concentration 7~10%,
Rolling effluent from catalysis oxidizing tower lower part side enter, and ozone from the bottom of catalysis oxidizing tower enter, ozone gas and
Rolling effluent forms the co-flow from catalysis oxidizing tower lower to upper part,
Rolling effluent is flowed out from the top of catalysis oxidizing tower, then enters blowoff basin by two-stage hoisting pump.
14. a kind of system removing total nitrogen and total organic carbon in rolling effluent as claimed in claim 13, which is characterized in that
The catalysis oxidizing tower is the stainless head tower of cylindrical type, ratio of height to diameter 6-8：1, catalysis oxidizing tower, which is built-in with, accounts for total volume in tower
70%~90% activated carbon supported molybdenum catalyst.
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| CN110921751A (en) * | 2018-09-19 | 2020-03-27 | 宝山钢铁股份有限公司 | Treatment method and system for removing total zinc and total organic carbon in cold rolling zinc-containing wastewater |
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