CN108046532A - The processing method of nitrate nitrogen in a kind of removal industrial wastewater - Google Patents
The processing method of nitrate nitrogen in a kind of removal industrial wastewater Download PDFInfo
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- CN108046532A CN108046532A CN201711406196.4A CN201711406196A CN108046532A CN 108046532 A CN108046532 A CN 108046532A CN 201711406196 A CN201711406196 A CN 201711406196A CN 108046532 A CN108046532 A CN 108046532A
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- industrial wastewater
- nitrate
- nitrogen
- nitrate nitrogen
- nitrocotton
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- 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
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- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/4608—Treatment of water, waste water, or sewage by electrochemical methods using electrical discharges
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- 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
- C02F2101/163—Nitrates
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention discloses a kind of processing methods for removing nitrate nitrogen in industrial wastewater, waste water is successively by sump, coarse rack, inclined-plate clarifying basin, aeration nitrification tank, the organic rhodium catalysis polymerization reaction trough of electrion, water purifying tank processing, pass through the direct effect of energy effect and polymerization catalyzed effect, make the ionic bond in nitrate ion that key occur to be broken and recombinate, ultimately generate cellulose nitrate granule object（Weak nitrocotton）, it is achieved thereby that the recycling of nitrogen resource.By this method treated industrial wastewater, the removal rate of nitrate nitrogen reaches 99.5%, and the conversion ratio of weak nitrocotton is more than 90%.Simultaneously as this reaction carries out in liquid matrix, therefore reaction efficiency and speed are controlled, and can be only generated weak nitrocotton, have prevented the generation of the higher strong nitrocotton of nitrogen content or collodion, so as to eliminate the risk exploded in operation.
Description
Technical field
The present invention relates to a kind of processing methods for removing nitrate nitrogen in industrial wastewater, belong at the waste water in environmental protection
Reason field.
Background technology
Nitrate nitrogen is one of major pollutants polluted to surface water and groundwater, while is also that surface water body is rich
" arch-criminal " of nutrient laden.Annual amount of nitrogen fixation is considerably beyond the nitrogen amount discharged by denitrification in the world,
So as to cause accumulation of the nitrate nitrogen in water environment, the nitrogen content for making various water bodys in nature is significantly exceeded.
At present, worldwide pollution of nitrate nitrogen is increasingly severe.For example, the PRIN research reports of Italy
Show：Although country makes great efforts to reduce the discharge of nitrate nitrogen in terms of intensive agricultural, nitrate nitrogen is still Tuscany
One of the important pollutant in area, nitrate nitrogen content is above 50mg/L in about 35% surface water body；AlabamaState,U.S.A
The river basins survey report of nearly 2 years is all pointed out：It is above in the middle part of the state with the nitrate nitrogen content in northeast major part basin
63mg/L, other area some have been even more than 112mg/L；The nitrate nitrogen content of the agricultural irrigation water of Germany 50% is
More than 60mg/L；The nitrate nitrogen content of Paris, FRA in the neighbourhood has reached 180mg/L.
The European and American areas exceeded phenomenon of water body nitrate nitrogen is so serious, and the pollution of nitrate nitrogen present situation of China's water environment is similary
It allows of no optimist.In the recent period, the monitoring materials of 77 underground water wells in Changchun are shown：The recall rate of " three nitrogen " has all reached 100%, nitre
The exceeding standard rate of hydrochlorate nitrogen all maintains higher level；Efficiency in Buildings in Tianjin Area has carried out pollution of nitrate nitrogen to 201 earth's surface water spot positions and has showed
Shape is investigated, the results showed that：The surface water body azotate pollution situation of most of industrial area and agricultural reclamation area is extremely serious.
Nitrate in water is the most stable of nitrogen compound in the nitrogenous compound of various forms under aerobic environment, also
It is decomposition product of the itrogenous organic substance through mineralization terminal stage.Nitrate toxicity itself is very low, but it enters human body
After can be reduced to nitrite, toxicity increases, and is 11 times of nitrate toxicity.At the same time, the nitrate in water environment and
Nitrite is in various itrogenous organic substances（Amine, amide, urea, guanidine, cyanamide）Under the action of, it can also form chemical stability, cause
The various N- nitrosos compounds of group of the cancer N-nitrosamine different with mutagenesis mechanism and nitrosoamide.
Existing nitrate nitrogen removal methods include：
（1）Physical removal method：Mainly include membrane separation process（It is electrodialysis, reverse osmosis）With ion-exchange etc..
（2）Chemical reduction method：It is main to include ripple metal deoxidization and catalytic reduction method etc. living.
（3）Biological decomposition method：Under anaerobic condition nitrate nitrogen as denitrifier respiratory chain terminal electron acceptor and by
It is reduced to N2O or N2Process.
Above-mentioned tradition administering method has some disadvantages, and such as investment and operating cost are high, supplies consumption is big, nitrate
Nitrogen removal efficiency is low etc..Therefore, it is necessary to break away from existing Treatment process route, new Approach of Removal of Nitrogen is createed, and then is developed
A kind of nitrate nitrogen treatment technology of new type.
The content of the invention
To solve the deficiencies in the prior art, the present invention provides a kind of processing for removing nitrate nitrogen in industrial wastewater
Method, the industrial wastewater containing nitrate nitrogen enter sump by waste line, and waste water carries out centralized collection and preliminary steady herein
It sets the tone section, the outlet of sump connects coarse rack by waste line, and waste water removes major diameter solid matter herein, coarse rack
Outlet connects inclined-plate clarifying basin by waste line, and waste water further removes insoluble matter therein herein, inclined-plate clarifying basin
Outlet connects aeration nitrification tank by waste line, and nitrogen substance in waste water is completely converted into nitrate nitrogen class at this, exposes
The outlet of gas nitrification tank connects the organic rhodium catalysis polymerization reaction trough of electrion, the wherein organic rhodium of electrion by waste line
The outer surface of catalytic polymerization slot is enclosed with groove body insulating protective layer, internal for silicon carbide ceramics structure, the upper right of reactive tank
Portion is equipped with inlet valve, and lower left quarter is equipped with flowing water Valve, and groove body middle body is equipped with four carbonyl of dichloro, two rhodium porous aggregate, fills out
Material layer lower part is connected with multiple granular material discharged mouths, and arranged on left and right sides siding center is respectively equipped with a high-voltage discharging electrode, anti-
Answer trench bottom arranged on left and right sides respectively equipped with a stirrer paddle, industrial wastewater passes through the organic rhodium catalysis polymerization reaction trough of electrion
Inlet valve enter inside reactive tank, high-voltage discharging electrode carries out an electrion at interval of 0.1s, can in reactive tank
The high-voltage arc for traversing groove body or so together is generated, high-energy caused by high-voltage arc is inhaled by the nitrate ion in waste water
It receives, the ionic bond in nitrate ion is subject to energy excitation to play pendulum, and is urged on the surface of four carbonyl of dichloro, two rhodium
The lower key that occurs of change effect is broken and recombinates, and final generation polymerisation generation cellulose nitrate granule object is directly arranged from particulate matter
It puts mouth and is discharged into weak nitrocotton drying formation system, while discharged by reacting purified industrial wastewater by flowing water Valve
Simultaneously into water purifying tank, the outlet of water purifying tank will pass through the system treated outside purification water outlet reactive tank by waste line
Row；The effect of weak nitrocotton drying formation system is that the cellulose nitrate granule object for reacting generation is dehydrated and is dried, using
Extrusion molding is finally made weak nitrocotton block for recycling.
The organic rhodium catalysis polymerization reaction trough of its electrion using four carbonyl of dichloro, two rhodium as polymerisation catalysts,
The inter-spike intervals of high-voltage discharging electrode be 0.1s, discharge voltage range be 8500 ~ 15000V, the hole of four carbonyl of dichloro, two rhodium filler
Footpath is 5.2mm, specific surface area 6.5cm2/ g, the dischargeable capacity of reactive tank is 133m3。
The drying temperature of its weak nitrocotton drying formation system is 70 ~ 85 DEG C, and the weak nitrocotton block specifications of compression moulding are
1.5cm×1.0cm×1.0cm。
Weak nitrocotton is a kind of nitrogenous organic high molecular polymer, and molecular formula is：[C6H7O2（ONO2）a（OH）3-
A] n, wherein a be esterification degree, n is the degree of polymerization.It belongs to one kind of nitrocellulose, and shape is white fibrous, physical
Matter is essentially identical with cotton.The nitrogen content of weak nitrocotton is 8 ~ 12%, available for production cinefilm, celluloid and zapon
Wait materials.
The advantage of the invention is that：
（1）This method has broken away from existing waste water nitrate nitrogen removing pattern, and creative employs physical means and chemistry side
The technology path that method is combined by the direct effect of energy effect and polymerization catalyzed effect, makes the ion in nitrate ion
Key occurs key and is broken and recombinates, and ultimately generates cellulose nitrate granule object（Weak nitrocotton）, it is achieved thereby that nitrogen resource
It recycles.By the system treated industrial wastewater, the removal rate of nitrate nitrogen reaches 99.5%, and weak nitrocotton
Conversion ratio more than 90%.
（2）This method employs the design of four carbonyl of dichloro, two rhodium porous aggregate, and waste water is enable fully to be sent out with catalyst
Raw haptoreaction, improves transformation efficiency, improves the processing capacity of whole system.
（3）Four carbonyl of dichloro, two rhodium polymerization catalyst in this method has service life long and is not susceptible in catalyst
The characteristics of malicious, it is achieved thereby that the low O＆M cost and long-play of processing system.
（4）The catalytic reaction of this method carries out in liquid matrix, therefore reaction efficiency and speed are controlled, can only
Weak nitrocotton is generated, has prevented the generation of the higher strong nitrocotton of nitrogen content or collodion, is exploded so as to eliminate in operation
Risk.
Description of the drawings
Fig. 1 is the equipment schematic diagram of the present invention.
In figure：1- sumps, 2- coarse racks, 3- inclined-plate clarifying basins, 4- aerations nitrification tank, the organic rhodium catalysis of 5- electrions
The weak nitrocotton drying formation system of polymerization reaction trough, 6- water purifying tanks, 7-
Fig. 2 is the schematic diagram of the organic rhodium catalysis polymerization reaction trough of electrion.
51- high-voltage discharging electrodes, four carbonyl of 52- dichloros, two rhodium porous aggregate, 53- groove bodies insulating protective layer, 54- inlet valves
Door, 55- flowing water Valves, 56- stirrer paddles, the granular material discharged mouths of 57-
Specific embodiment
The processing method of nitrate nitrogen, the industrial wastewater containing nitrate nitrogen pass through in removal industrial wastewater as shown in Figure 1
Waste line enters sump 1, carries out centralized collection herein and preliminarily stabilised is adjusted, the outlet of sump 1 passes through waste line
Coarse rack 2 is connected, the major diameter solid matter in industrial wastewater is removed at this, the outlet of coarse rack 2 is connected by waste line
Inclined-plate clarifying basin 3, in this insoluble matter in further removing waste water, the outlet of inclined-plate clarifying basin 3 is connected by waste line
Nitrification tank 4 is aerated, nitrogen substance in waste water is completely converted into nitrate nitrogen class at this, the outlet of aeration nitrification tank 4 passes through
Waste line connects the organic rhodium catalysis polymerization reaction trough 5 of electrion, the outlet of the organic rhodium catalysis polymerization reaction trough 5 of electrion
Water purifying tank 6 is connected by waste line, the outlet of water purifying tank 6 will pass through the system treated purification water outlet by waste line
Outer row, meanwhile, the nitrocellulose generated in the organic rhodium catalysis polymerization reaction trough 5 of electrion passes through granular material discharged 57 row of mouth
Go out, and formation system 7 is dried into weak nitrocotton, can be recycled after weak nitrocotton drying dehydration and compression moulding；Its
In, the outer layer covers of the organic rhodium catalysis polymerization reaction trough 5 of electrion have groove body insulating protective layer 53, and inside is silicon carbide ceramics
Structure, the dischargeable capacity of reactive tank is 133m3, for the upper right quarter of reactive tank equipped with inlet valve 54, lower left quarter is equipped with flowing water Valve
55, groove body middle body is equipped with four carbonyl of dichloro, two rhodium porous aggregate 52, and as polymerisation catalysts, the aperture of filler is
5.2mm, specific surface area 6.5cm2/ g, packing layer lower part are connected with granular material discharged mouth 57, and arranged on left and right sides siding hits exactly each peace
Equipped with a high-voltage discharging electrode 51, in reaction tank bottom arranged on left and right sides respectively equipped with a stirrer paddle 56, industrial wastewater passes through
The inlet valve 54 of the organic rhodium catalysis polymerization reaction trough 5 of electrion into inside reactive tank, high-voltage discharging electrode 51 at interval of
0.1s carries out an electrion, and discharge voltage range is 8500 ~ 15000V, can be generated in reactive tank and traverse a groove body left side together
Right high-voltage arc, high-energy caused by high-voltage arc are absorbed by the nitrate ion in waste water, in nitrate ion from
Sub-key is subject to energy excitation to play pendulum, and key fracture occurs simultaneously under the surface catalysis of four carbonyl of dichloro, two rhodium
Restructuring, ultimately generates cellulose nitrate granule object（Weak nitrocotton）, the cellulose nitrate granule object of generation is reacted directly from particle
Object floss hole 57 is discharged, meanwhile, reactive tank is discharged and into only by flowing water Valve 55 by reacting purified industrial wastewater
In pond 6.Wherein, the effect of weak nitrocotton drying formation system 7 is to be dehydrated the cellulose nitrate granule object for reacting generation simultaneously
Drying using extrusion molding, is finally made weak nitrocotton block for recycling, the baking of weak nitrocotton drying formation system
Dry temperature is 70 ~ 85 DEG C, and the weak nitrocotton block specifications of compression moulding are 1.5cm × 1.0cm × 1.0cm, weak nitrocotton it is nitrogenous
It measures as 8 ~ 12%.
By the system treated industrial wastewater, the removal rate of nitrate nitrogen reaches 99.5%, and weak nitrocotton
Conversion ratio is more than 90%.
Claims (4)
1. a kind of processing method for removing nitrate nitrogen in industrial wastewater, which is characterized in that the industrial wastewater containing nitrate nitrogen leads to
It crosses waste line and enters sump, waste water carries out centralized collection herein and preliminarily stabilised is adjusted, and the outlet of sump passes through waste water
Pipeline connects coarse rack, and waste water removes major diameter solid matter herein, and the outlet of coarse rack connects inclined plate by waste line and sinks
Shallow lake pond, waste water further remove insoluble matter therein herein, and the outlet of inclined-plate clarifying basin connects aeration nitre by waste line
Change pond, nitrogen substance in waste water is completely converted into nitrate nitrogen class at this, the outlet for being aerated nitrification tank passes through waste line
Connect the outer surface package of the organic rhodium catalysis polymerization reaction trough of electrion, the wherein organic rhodium catalysis polymerization reaction trough of electrion
There is groove body insulating protective layer, inside is silicon carbide ceramics structure, and the upper right quarter of reactive tank is equipped with inlet valve, and lower left quarter is equipped with out
Penstock, groove body middle body is equipped with four carbonyl of dichloro, two rhodium porous aggregate, as polymerisation catalysts, packing layer lower part
Multiple granular material discharged mouths are connected with, arranged on left and right sides siding center is respectively equipped with a high-voltage discharging electrode, in reaction tank bottom
Arranged on left and right sides is respectively equipped with a stirrer paddle, the inlet valve that industrial wastewater passes through the organic rhodium catalysis polymerization reaction trough of electrion
Door enters inside reactive tank, and high-voltage discharging electrode carries out an electrion at interval of 0.1s, can be generated together in reactive tank
The high-voltage arc of groove body or so is traversed, high-energy caused by high-voltage arc is absorbed by the nitrate ion in waste water, nitrate anion
Ionic bond in ion is subject to energy excitation to play pendulum, and is issued in the surface catalysis of four carbonyl of dichloro, two rhodium
Raw key be broken and recombinates, and the final polymerisation that occurs generates cellulose nitrate granule object, directly from granular material discharged mouth discharge into
Enter weak nitrocotton drying formation system, while gone forward side by side by reacting purified industrial wastewater by flowing water Valve discharge reactive tank
Enter in water purifying tank, the outlet of water purifying tank, which will be passed through the system treated by waste line outside purification water outlet, arranges；Weak nitrocotton
The effect of drying formation system is that the cellulose nitrate granule object for reacting generation is dehydrated and is dried, using extrusion molding, most
Weak nitrocotton block is made eventually for recycling.
2. the processing method of nitrate nitrogen in removal industrial wastewater according to claim 1, which is characterized in that electrion
Organic rhodium catalysis polymerization reaction trough, the discharge voltage range of high-voltage discharging electrode are about 8500 ~ 15000V, four carbonyl two of dichloro
The aperture of rhodium filler is 5.2mm, specific surface area 6.5cm2/ g, the dischargeable capacity of reactive tank is 133m3。
3. the processing method of nitrate nitrogen in removal industrial wastewater according to claim 1, which is characterized in that weak nitrocotton
The drying temperature of formation system is dried as 70 ~ 85 DEG C, the weak nitrocotton block specifications of compression moulding for 1.5cm × 1.0cm ×
1.0cm。
4. the processing method of nitrate nitrogen in removal industrial wastewater according to claim 1, which is characterized in that weak nitrocotton
It is a kind of nitrocellulose, is white fibrous, nitrogen content is about 8 ~ 12%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711406196.4A CN108046532A (en) | 2017-12-22 | 2017-12-22 | The processing method of nitrate nitrogen in a kind of removal industrial wastewater |
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| CN201711406196.4A CN108046532A (en) | 2017-12-22 | 2017-12-22 | The processing method of nitrate nitrogen in a kind of removal industrial wastewater |
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| CN108046532A true CN108046532A (en) | 2018-05-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3848332A4 (en) * | 2018-09-03 | 2021-10-20 | Dayuan Environmental Technology (Xiamen) Co., Ltd. | Plasma denitriding device and use method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5707508A (en) * | 1996-04-18 | 1998-01-13 | Battelle Memorial Institute | Apparatus and method for oxidizing organic materials |
| CN105417874A (en) * | 2015-12-14 | 2016-03-23 | 陈杰 | Method for denitrification treatment of rural sewage |
| CN105417873A (en) * | 2015-12-14 | 2016-03-23 | 陈杰 | Rural sewage denitrification treatment system |
-
2017
- 2017-12-22 CN CN201711406196.4A patent/CN108046532A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5707508A (en) * | 1996-04-18 | 1998-01-13 | Battelle Memorial Institute | Apparatus and method for oxidizing organic materials |
| CN105417874A (en) * | 2015-12-14 | 2016-03-23 | 陈杰 | Method for denitrification treatment of rural sewage |
| CN105417873A (en) * | 2015-12-14 | 2016-03-23 | 陈杰 | Rural sewage denitrification treatment system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3848332A4 (en) * | 2018-09-03 | 2021-10-20 | Dayuan Environmental Technology (Xiamen) Co., Ltd. | Plasma denitriding device and use method thereof |
| US20210323853A1 (en) * | 2018-09-03 | 2021-10-21 | Dayuan Environmental Technology (xiamen) Co., Ltd. | Plasma denitrification device and operating method thereof |
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