CN110078268A - A kind of deflector type ammonia nitrogen waste water deep denitrogenation device and method - Google Patents
A kind of deflector type ammonia nitrogen waste water deep denitrogenation device and method Download PDFInfo
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- CN110078268A CN110078268A CN201910289403.5A CN201910289403A CN110078268A CN 110078268 A CN110078268 A CN 110078268A CN 201910289403 A CN201910289403 A CN 201910289403A CN 110078268 A CN110078268 A CN 110078268A
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- waste water
- ammonia nitrogen
- villaumite
- chlorination
- denitrification reaction
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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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
- C02F1/4674—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation with halogen or compound of halogens, e.g. chlorine, bromine
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention discloses a kind of deflector type ammonia nitrogen waste water deep denitrogenation device and methods, described device includes sequentially connected villaumite conditioning tank, electric chlorination denitrification reaction pond, pH conditioning tank, the villaumite conditioning tank can adjust chlorine ion concentration according to requiring to add villaumite, the electricity chlorination denitrification reaction pond is equipped with baffling component, retention time of sewage can be extended, it is equipped with DSA polar plate group simultaneously, fills three dimensional particles electrode between pole plate, the effective chlorine generation efficiency of electric chlorination reactor can be enhanced.Electricity depth of chlorination nitrogen rejection facility proposed by the invention is that ammonia nitrogen is ultimately oxidized as nitrogen and removed by the Active Chlorine generated using electric chlorination, will not generate the by-products such as ammonium salt, nitrate；And the three-diemsnional electrode and deflector type design in electric chlorination denitrification reaction pond can enhance continuous flow denitrification efficiency, realize advanced nitrogen, and it is easy to operate, it can solve the problems, such as that the tail end water outlet ammonia nitrogen of wastewater treatment is high.
Description
Technical field
The invention belongs to sewage treatment fields, and in particular to a kind of deflector type ammonia nitrogen waste water deep denitrogenation device and method.
Background technique
As the relevant policies of China environmental protection are put into effect in succession, water environment pollution prevention and treatment also becomes importance, right
It is increased in the waste water supervision such as animal husbandry, meat packing, food production, the ammonia nitrogen concentration of this kind of waste water is relatively high, passes through
Emission request is extremely difficult to after traditional handicraft processing, water outlet ammonia nitrogen concentration is even more than tens hundreds of times of emission request.Electric chlorine
Change method removes ammonia nitrogen, is to generate hypochlorite or hypochlorous acid (effective chlorine), effective chlorine and ammonia nitrogen by electrolysis method and chloride ion effect
After reaction, a kind of method of ammonia nitrogen is finally eliminated in the form of nitrogen.Instantly, some high ammonia-nitrogen wastewaters such as cultivate class waste water, warp
Crossing traditional sewage water treatment method can not make ammonia nitrogen reach emission request, and two-dimentional electrolysis reactor is difficult to meet water biggish
Project.
Summary of the invention
It is an object of the invention to overcome the problems of the prior art, it is de- to provide a kind of deflector type ammonia nitrogen waste water depth
Nitrogen device and method, can nitrogen in efficient removal waste water, reduce ammonia nitrogen and total nitrogen concentration.
The present invention solves above-mentioned technical problem by the following technical programs:
A kind of deflector type ammonia nitrogen waste water deep denitrogenation device, including villaumite conditioning tank, electric chlorination denitrification reaction pond and pH tune
Pond is saved, villaumite conditioning tank is connect with electric chlorination denitrification reaction pond, and intake pump, electric chlorination denitrification reaction pond are housed on connecting line
Water outlet connect with pH conditioning tank, be connected with circulating pump between the outlet pipeline and inlet pipeline in electric chlorination denitrification reaction pond.
In the above-mentioned technical solutions, the villaumite that the villaumite conditioning tank is connected with chlorine ion concentration in adjusting waste water adds
Device, it is preferable that the bottom of villaumite conditioning tank is equipped with several blenders.
In the above-mentioned technical solutions, several baffling components are equipped in the electric chlorination denitrification reaction pond, baffling component includes
Several first vertical clapboards, several second vertical clapboards and porous barrier, wherein the first vertical clapboard and the second vertical clapboard are handed over
Mistake arrangement, first vertical clapboard is fixed on porous barrier and is higher by the water surface in electric chlorination denitrification reaction pond, described porous
Partition is parallel to electric chlorination denitrification reaction bottom of pond portion and there are gap, described second is vertical with electric chlorination denitrification reaction bottom of pond portion
Partition is fixed on electric chlorination denitrification reaction bottom of pond portion across porous barrier and there are gaps with electric chlorination denitrification reaction water face.
In the above-mentioned technical solutions, the side wall of adjacent first vertical clapboard and the second vertical clapboard is equipped with the pole DSA
Board group, the DSA polar plate group include positive plate and negative plate, and each group positive plate is arranged in parallel and connects with DC power supply positive output
Mouth is connected, and each group negative plate is arranged in parallel and is connected with DC power supply negative output interface.
In the above-mentioned technical solutions, filled with three dimensional particles electricity between the positive plate and negative plate of the DSA polar plate group
Pole.
Further, the three dimensional particles electrode is mixed by conducting particles and insulating particle.
Further, the spacing of the positive plate and negative plate of each DSA polar plate group is 10cm-30cm.
A kind of deflector type ammonia nitrogen waste water deep denitrification method, specifically includes the following steps:
S1, ammonia nitrogen waste water enter villaumite conditioning tank, according to the ammonia nitrogen concentration of water inlet, calculate the concentration of required chloride ion, then
Villaumite is added by villaumite supply device；
S2, waste water is pumped by electric chlorination denitrification reaction pond by intake pump, carries out electrolysis nitrogen reaction；
Waste water after S3, denitrogenation enters pH conditioning tank from water outlet, adjusts pH rear discharge up to standard.
Further, after adjusting chlorine ion concentration, the molar ratio of ammonia nitrogen and chloride ion is 1:22-33.
Further, when the electrolysis positive/negative plate current density 20-50mA/cm2。
Further, the ammonia nitrogen waste water include the waste water such as animal husbandry, meat packing, food production after treatment
Tail end waste discharge.
The advantages and positive effects of the present invention are as follows:
1. villaumite conditioning tank is arranged, chlorine ion concentration can be adjusted according to ammonia nitrogen concentration, be that the two concentration is in best anti-
Answer condition.Set baffling component in electric chlorination denitrification reaction pond is conducive to waste water and presents in the flow process in reaction tank
Lower baffling state extends waste water in the residence time of reaction tank, forms continuous galvanic electricity chlorination denitrogenation.
2. the hybrid three-dimensional electrode of conducting particles and insulating particle is filled between the positive/negative plate of DSA polar plate group, it can be with
It is effectively prevent short circuit current, using a large amount of small induction electrodes of three dimensional particles electrode, having for electric chlorination reactor can be enhanced
Chlorine generation efficiency is imitated, and strengthens the contacting efficiency of waste water and positive and negative electrode and induction electrode, by indirectly and directly aoxidizing
Effect keeps denitrification reaction more efficient, reduces the reaction time, saves electric energy.
3. adjusting the pH of waste water after denitrogenation, in pH conditioning tank according to wastewater property to reach discharge standard.
Detailed description of the invention
Fig. 1 is a kind of connection schematic diagram of deflector type ammonia nitrogen waste water deep denitrogenation device of the present invention；
Fig. 2 is the structural schematic diagram of baffling component in the present invention；
Fig. 3 is the ammonia nitrogen removal frank of waste water and the relational graph in reaction time in the embodiment of the present invention 1；
In figure, 1- villaumite conditioning tank, 2- electricity chlorination denitrification reaction pond, 3-pH conditioning tank, 4- intake pump, 5- circulating pump, 6-
Villaumite supply device, 7- baffling component, the first vertical clapboard of 71-, the second vertical clapboard of 72-, 73- porous barrier, 8-DSA pole plate
Group, 81- positive plate, 82- negative plate, 9- DC power supply, 10- three dimensional particles electrode, 11- blender.
Specific embodiment
In order to make those skilled in the art be better understood on technical solution of the present invention, with reference to the accompanying drawing
Technical solution of the present invention is further described with embodiment.
As shown in Figure 1, a kind of deflector type ammonia nitrogen waste water deep denitrogenation device, mainly includes villaumite conditioning tank 1, electric chlorination
Denitrification reaction pond 2 and pH conditioning tank 3, wherein ammonia nitrogen waste water includes the waste water such as animal husbandry, meat packing, food production at
Tail end waste discharge after reason.
Villaumite conditioning tank 1 is connected with villaumite supply device 6, adjusting chlorine ion concentration in waste water, guarantee ammonia nitrogen and chlorine from
Son reaches optimum response ratio, and the preferably molar ratio of ammonia nitrogen and chlorine is 1:22-33；The bottom of villaumite conditioning tank 1 is equipped with simultaneously
Several blenders 11 assist the villaumite of addition uniformly to mix with waste water.Mixed waste water from water outlet by intake pump 4 into
Enter electric chlorination denitrification reaction pond 2.
Several baffling components 7 are equipped in electric chlorination denitrification reaction pond 2, as shown in Fig. 2, baffling component 7 includes several first
Vertical clapboard 71, several second vertical clapboards 72 and porous barrier 73, wherein the first vertical clapboard 71 and the second vertical clapboard 72
Be staggered, the first vertical clapboard 71 be fixed on porous barrier 73 and with the water surface that is higher by electric chlorination denitrification reaction pond 2, it is more
Hole partition 73 be parallel to the bottom in electric chlorination denitrification reaction pond 2 and between the bottom in electric chlorination denitrification reaction pond 2 there are
Gap, the second vertical clapboard 72 pass through porous barrier be fixed on 2 bottom of electric chlorination denitrification reaction pond and with electric chlorination denitrification reaction pond
There are gaps for 2 water surface.Being provided with for baffling component 7 is in upper and lower baffling state in flow process in reaction tank conducive to waste water,
It flows waste water in reaction tank along direction shown in arrow, ensure that waste water uniformly and effectively participates in reacting.
DSA polar plate group 8, DSA polar plate group are equipped on the side wall of adjacent first vertical clapboard 71 and the second vertical clapboard 72
8 include positive plate 81 and negative plate 82, and each group positive plate is arranged in parallel and is connected with 9 positive output interface of DC power supply, and each group is negative
Pole plate is arranged in parallel and is connected with 9 negative output interface of DC power supply, in electrolysis, the current density 20-50mA/ of DSA pole plate
cm2, and DSA polar plate group and number of baffles, it can be increased and decreased according to residence time and design discharge.
Between every group of positive plate 81 and negative plate 82 be filled with three dimensional particles electrode 10, and three dimensional particles electrode 10 by
Conducting particles and insulating particle mix；Insulating particle can prevent short circuit current, and three dimensional particles electrode is a large amount of micro-
Small induction electrode, can be enhanced the effective chlorine generation efficiency of electric chlorination reactor, and strengthen waste water and positive and negative electrode and sense
The contacting efficiency for answering electrode keeps denitrification reaction more efficient by indirectly and directly oxidation, reduces the reaction time, saves electricity
Energy.The spacing of positive plate 81 and negative plate 82 is 10cm-30cm, in the present embodiment, spacing 20cm.
Be connected with circulating pump 5 between the outlet pipeline and inlet pipeline in electric chlorination denitrification reaction pond 2, can to waste water into
The processing of row cycling denitrification.In electric chlorination denitrification reaction pond 2, given birth to Active Chlorine is produced using electrolysis villaumite, by the ammonia in waste water
Nitrogen is ultimately oxidized as nitrogen and removes, at this time the ammonia nitrogen almost all removal in waste water, and the waste water after denitrogenation is through electric chlorination denitrogenation
The water outlet of reaction tank 2 enters pH conditioning tank 3, adjusts pH to emission request.
A kind of deflector type ammonia nitrogen waste water deep denitrification method, using above-mentioned deflector type ammonia nitrogen waste water deep denitrogenation device,
Specifically includes the following steps:
S1, ammonia nitrogen waste water enter villaumite conditioning tank, are scaled sodium chloride mass concentration, root according to water inlet chlorine ion concentration
According to influent ammonium concentration, the concentration of chloride ion needed for determining is calculated, if water body height is containing chlorine and meets the requirements, villaumite is not added；It is excellent
The ammonia nitrogen and chloride ion molar ratio of choosing are 1:22-33；
S2, waste water is pumped by electric chlorination denitrification reaction pond by intake pump, carries out electrolysis nitrogen reaction, it is positive and negative when electrolysis
The current density of pole plate is 20-50mA/cm2；
Waste water after S3, denitrogenation enters pH conditioning tank from water outlet, adjusts pH rear discharge up to standard.
Embodiment 1.
The waste water used is certain water outlet of the pig farm high ammonia-nitrogen wastewater after conventional biochemical process, such as 1 institute of table
Show, ammonia nitrogen in waste water content 170mg/L, chloride ion content is lower, pH=7.2.
Denitrogenation processing is carried out to it using electric chloridizing unit, the pole plate of electrolysis reactor is single step arrangement, column activated carbon
Three dimensional particles filler, decomposition voltage U=25v, the current density 35mA/cm of positive/negative plate are used as with glass particle mixing2, throw
Add sodium chloride, the molar ratio ratio for adjusting ammonia nitrogen and chloride ion is 1:28.In electrolytic process, the ammonia nitrogen concentration variation of waste water is such as
Shown in Fig. 3, when reacting 80min, ammonia nitrogen removal frank is up to 98%.
The index of the waste water to be processed of table 1
| Ingredient | Ammonia nitrogen | Cl- | pH |
| Concentration | 170mg/L | 56mg/L | 7.2 |
Embodiment 2.
Using the waste water and device in embodiment 1, the current density that positive/negative plate is arranged is 20mA/cm2, and add chlorine
Change sodium, the molar ratio ratio for adjusting ammonia nitrogen and chloride ion is 1:22, other reaction conditions are identical, the experimental results showed that,
When 90min, ammonia nitrogen removal frank reaches 98%.
Embodiment 3
Using the waste water and device in embodiment 1, the current density that positive/negative plate is arranged is 50mA/cm2, and add chlorine
Change sodium, the molar ratio ratio for adjusting ammonia nitrogen and chloride ion is 1:33, other reaction conditions are identical, the experimental results showed that,
When 70min, ammonia nitrogen removal frank can reach 99%.
Certainly, the above is only specific application example of the invention, protection scope of the present invention is not limited in any way.
In addition to the implementation, the present invention can also have other embodiment.All technologies formed using equivalent substitution or equivalent transformation
Scheme is all fallen within scope of the present invention.
Claims (7)
1. a kind of deflector type ammonia nitrogen waste water deep denitrogenation device, which is characterized in that including villaumite conditioning tank (1), electric chlorination denitrogenation
Reaction tank (2) and pH conditioning tank (3), villaumite conditioning tank (1) connect with electric chlorination denitrification reaction pond (2), are equipped on connecting line
The water outlet of intake pump (4), electric chlorination denitrification reaction pond (2) is connect with pH conditioning tank (3), electric chlorination denitrification reaction pond (2)
Circulating pump (5) are connected between outlet pipeline and inlet pipeline；
The villaumite conditioning tank (1) is connected with the villaumite supply device (6) for adjusting chlorine ion concentration in waste water；
Several baffling components (7) are equipped in the electricity chlorination denitrification reaction pond (2), the baffling component (7) includes several first
Vertical clapboard (71), several second vertical clapboards (72) and porous barrier (73), wherein the first vertical clapboard (71) and second erects
Straight baffle (72) is staggered；First vertical clapboard (71) is fixed on porous barrier (73) and to be higher by electric chlorination denitrogenation anti-
The water surface of Ying Chi (2), the porous barrier (73) be parallel to electric chlorination denitrification reaction pond (2) bottom and with electric chlorination denitrification reaction
There are gap, second vertical clapboard (72) passes through porous barrier (73) and is fixed on electric chlorination denitrification reaction pond for pond (2) bottom
(2) bottom and there are gaps with the water surface in electric chlorination denitrification reaction pond (2)；
The side wall of adjacent first vertical clapboard (71) and the second vertical clapboard (72) is equipped with DSA polar plate group (8), described
DSA polar plate group (8) includes positive plate (81) and negative plate (82), and each group positive plate is arranged in parallel and just defeated with DC power supply (9)
Outgoing interface is connected, and each group negative plate is arranged in parallel and is connected with DC power supply (9) negative output interface；
Three dimensional particles electrode (10) are filled between the positive/negative plate of the DSA polar plate group (8).
2. a kind of deflector type ammonia nitrogen waste water deep denitrogenation device according to claim 1, which is characterized in that the positive plate
(81) and the spacing of negative plate (82) is 10cm-30cm.
3. a kind of deflector type ammonia nitrogen waste water deep denitrogenation device according to claim 1, which is characterized in that the three-dimensional grain
Sub-electrode (10) is mixed by conducting particles and insulating particle.
4. a kind of deflector type ammonia nitrogen waste water deep denitrogenation device according to claim 1, which is characterized in that the villaumite tune
It saves pond (1) bottom and is equipped with several blenders (11).
5. a kind of carry out deflector type ammonia nitrogen waste water deep denitrification method using the described in any item devices of claim 1-4, special
Sign is, specifically includes the following steps:
S1, ammonia nitrogen waste water enter villaumite conditioning tank, according to the ammonia nitrogen concentration of water inlet, calculate the concentration of chloride ion needed for determining, then
Villaumite is added by villaumite supply device；
S2, waste water is pumped by electric chlorination denitrification reaction pond by intake pump, carries out electrolysis nitrogen reaction；
Waste water after S3, denitrogenation enters pH conditioning tank from water outlet, adjusts pH rear discharge up to standard.
6. a kind of deflector type ammonia nitrogen waste water deep denitrification method according to claim 5, which is characterized in that the ammonia nitrogen with
The molar ratio of chloride ion is 1:22-33.
7. a kind of deflector type ammonia nitrogen waste water deep denitrification method according to claim 5, it is characterised in that, when the electrolysis
The current density 20-50mA/cm of positive/negative plate2。
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| CN201910289403.5A CN110078268A (en) | 2019-04-11 | 2019-04-11 | A kind of deflector type ammonia nitrogen waste water deep denitrogenation device and method |
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| CN201910289403.5A CN110078268A (en) | 2019-04-11 | 2019-04-11 | A kind of deflector type ammonia nitrogen waste water deep denitrogenation device and method |
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Cited By (2)
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| CN112723657A (en) * | 2020-12-11 | 2021-04-30 | 湖南军信环保股份有限公司 | Device and method for treating aged landfill leachate and membrane filtration concentrated solution thereof |
| CN114105386A (en) * | 2020-08-31 | 2022-03-01 | 中国石油化工股份有限公司 | Natural gas produced water treatment system and water treatment process thereof |
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| CN114105386A (en) * | 2020-08-31 | 2022-03-01 | 中国石油化工股份有限公司 | Natural gas produced water treatment system and water treatment process thereof |
| CN114105386B (en) * | 2020-08-31 | 2024-01-09 | 中国石油化工股份有限公司 | Natural gas produced water treatment system and water treatment process thereof |
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