CN107500404A - A kind of compound uncoupling agent for mud decrement and preparation method thereof - Google Patents
A kind of compound uncoupling agent for mud decrement and preparation method thereof Download PDFInfo
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- CN107500404A CN107500404A CN201711000488.8A CN201711000488A CN107500404A CN 107500404 A CN107500404 A CN 107500404A CN 201711000488 A CN201711000488 A CN 201711000488A CN 107500404 A CN107500404 A CN 107500404A
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- dnp
- diatomite
- mud decrement
- uncoupling agent
- compound uncoupling
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- 150000001875 compounds Chemical class 0.000 title claims abstract description 45
- 239000004061 uncoupling agent Substances 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- UFBJCMHMOXMLKC-UHFFFAOYSA-N 2,4-dinitrophenol Chemical compound OC1=CC=C([N+]([O-])=O)C=C1[N+]([O-])=O UFBJCMHMOXMLKC-UHFFFAOYSA-N 0.000 claims abstract description 105
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 50
- 150000002815 nickel Chemical class 0.000 claims abstract description 15
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 claims description 42
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical group Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 claims description 42
- 239000010802 sludge Substances 0.000 abstract description 37
- 230000000694 effects Effects 0.000 abstract description 7
- 239000002689 soil Substances 0.000 description 17
- 238000000034 method Methods 0.000 description 13
- 239000010865 sewage Substances 0.000 description 13
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 11
- 229910001453 nickel ion Inorganic materials 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 6
- 244000005700 microbiome Species 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 239000000693 micelle Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000008346 aqueous phase Substances 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- HSQFVBWFPBKHEB-UHFFFAOYSA-N 2,3,4-trichlorophenol Chemical compound OC1=CC=C(Cl)C(Cl)=C1Cl HSQFVBWFPBKHEB-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000010840 domestic wastewater Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000037323 metabolic rate Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000010627 oxidative phosphorylation Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000026731 phosphorylation Effects 0.000 description 1
- 238000006366 phosphorylation reaction Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- -1 small molecule Organic compound Chemical class 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 239000002351 wastewater 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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1205—Particular type of activated sludge processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- 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)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Treatment Of Sludge (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
A kind of compound uncoupling agent for mud decrement, including component are 2,4 dinitrophenol, soluble nickel salt solute and diatomite；Wherein, 2,4 dinitrophenol, the weight ratio of soluble nickel salt and diatomite is 1：(0.055~0.37)：(0.1055~1.37).The preparation method of compound uncoupling agent, comprises the following steps：By proportioning, 2,4 dinitrophenol, soluble nickel salt and diatomite are weighed respectively；2,4 dinitrophenol are configured to 2,4 dinitrophenol solutions, concentration is 5.5~12mg/L；By 2,4 dinitrophenol solutions, soluble nickel salt and diatomite are well mixed, and the compound uncoupling agent for mud decrement is made.The compound uncoupling agent of the present invention keeps good mud decrement effect, it can substantially weaken infringement of the uncoupler to Sludge Property simultaneously, and improve the effluent quality compromises caused by uncoupler so that system still can keep the treatment effect that should reach after DNP is added.
Description
Technical field：
The invention belongs to uncoupler technical field, and in particular to a kind of compound uncoupling agent for mud decrement and its
Preparation method.
Background technology：
Activated sludge process is to utilize a widest dirty water living creature processing technique in the world so far, but its institute
Producing excess sludge can cause directly or indirectly to pollute to environment, therefore it is to be highly desirable to carry out processing to excess sludge
's.The yield of excess sludge is generally large, accounts for 0.3~0.5% (moisture content is in terms of 97%) of sewage load.Meanwhile sludge
The investment of processing and operating cost are huge, almost account for the 25~65% of whole sewage treatment plant's investment and operating cost.It is remaining dirty
The heavy burden for being treated as sewage treatment plant and facing of mud.Therefore, activated sludge sewage disposal process is reduced or reduced and be remaining
The generation rate of sludge is always problem of great interest.The Sludge Reduction Technologies commonly used mainly include recessive growth method, life
Thing predation method conciliates coupling method etc., although these methods each have clear advantage and deficiency, comparatively, wherein solving
Coupling method because the amplitude for reducing sludge yield is maximum and more people receive and more with prospects.
There are ATP participations in organism synthesis and catabolic process, pass through ATP caused by anabolism and small molecule
Organic compound, energy (ATP) and raw material are provided for anabolism, so as to maintain the normal activities of organism.ATP is raw
Uncoupler caused by ADP phosphorylations, will be added in thing oxidative phosphorylation process to be made the anabolism of activated sludge and decomposes generation
To thank by uncoupling, caused energy is largely scattered and disappeared in the form of heat in catabolic process, and ATP can not be synthesized effectively,
Therefore anabolism can effectively be suppressed by adding uncoupler, promote catabolism, i.e. metabolic rate is more than synthesis rate.Microorganism
While oxidation substrates, itself aggregate velocity slows down, and overall observed yield coefficient reduces, and sludge yield is reduced.
Uncoupler commonly used in the prior art has 2,4-DNP, trichlorophenol, 2,4,6,-T, 2, a 4- chlorophenesic acids and 3, and 3,
4,5- tetra- chlorosamides etc..Wherein DNP is because the decrement effect to excess sludge is the most notable and most widely used, some
In active sludge treatment process, the yield of sludge can typically reduce 60%.Although all uncouplers have one it is common
The activity reduction of sludge can be caused after shortcoming, i.e. addition system, but DNP this shortcoming is more notable, but to microorganism
Injury it is relatively bigger.
The content of the invention：
It is an object of the invention to provide a kind of compound uncoupling agent for mud decrement and preparation method thereof, it is with 2,4-
Dinitrophenol (DNP) is main component, by adding other helper components, is made in sewage disposal system because of DNP addition
And the side effect of Sludge Property reduction is caused to minimize.
To achieve the above object, the present invention uses following technical scheme：
A kind of compound uncoupling agent for mud decrement, including component is 2,4-DNP, soluble nickel salt and
Diatomite；Wherein, the weight ratio of 2,4-DNP, soluble nickel salt and diatomite is 1：(0.055~0.37)：
(0.1055~1.37).
Described soluble nickel salt is nickel chloride.
The specific surface area of described diatomite is 30~60m2/g。
The preparation method of the described compound uncoupling agent for mud decrement, comprises the following steps：
(1) by proportioning, 2,4-DNP, soluble nickel salt and diatomite are weighed respectively；
(2) 2,4-DNP is configured to 2,4-DNP solution, concentration is 5.5~12mg/L；
(3) 2,4-DNP solution, soluble nickel salt and diatomite are well mixed, are made for mud decrement
Compound uncoupling agent.
The operation principle of the present invention：
In activated sludge process sewage disposal system, sewage is not at homogeneous admixture each other with sludge, to the greatest extent
Pipe exist aeration mechanical agitation, but sludge still in the form of micelle particle based on be suspended in system.Inventor exists
It was found that, concentration of injuries of the DNP to microorganism to DNP in aqueous phase is extremely related, the higher wound to microorganism of concentration
Evil is bigger.And concentration of the DNP uncoupling then to DNP in sludge micelle particle is extremely related, the higher uncoupling of concentration
Effect is bigger.In addition, nickel ion is the indispensable trace element of microorganism, appropriate nickel ion is favorably improved the work of microorganism
Property, and then improve the efficiency of decomposing organic matter.And diatomite is porous, light, relative density is small, the diatomite of clean dry
Density is only 0.4~0.9g/cm3, and because diatomite pore size distribution range is big, porosity is high, and adsorption capacity is strong, can improve
The settleability of activated sludge, and effluent quality is further improved by the organic matter in absorption effluent.The essence of the present invention
It is that DNP and soluble nickel salt, diatomite are hybridly prepared into a kind of compound uncoupler by certain concentration, inventor exists
Observed in experiment, because diatomite has larger porosity and than surface, the material of 3-4 times of sole mass can be adsorbed.
Therefore, not only there is stronger suction-operated to DNP and bivalent nickel ion, and adsorption capacity is very big.As DNP and soluble nickel
After salt, diatomite are by certain concentration mixing, diatomite absorption carriage DNP and bivalent nickel ion as carrier,
Form a kind of compound uncoupling agent of " support type ", and the DNP and bivalent nickel ion being carried on " carrier " in water not
It can rapidly spread as simple DNP and bivalent nickel ion, and slowly discharged with relatively low speed, therefore can will be this
The compound uncoupling agent of " support type " is regarded as spacetabs type uncoupler.Inventor is and simple by further testing discovery
DNP is compared, and the rate of dissolution in sewage after the compound uncoupling agent input coefficient of this " support type " substantially slows down, therefore
Concentration in sewage aqueous phase is greatly lowered.On the other hand, because diatomite easily fuses with sludge micelle Particulate accumulation very much, they
Gathering fused rear DNP and bivalent nickel ion will slowly be released in sludge micelle so that sludge micelle interior energy obtains higher
DNP and bivalent nickel ion concentration.
DNP and bivalent nickel ion have preferable synergy to uncoupling method sludge decrement, and both are suitably to compare
Example is with the use of the total addition that can reduce uncoupler, so as to further be advantageous to the raising of sewage treating efficiency.
Beneficial effects of the present invention：
(1) Treatment of Sludge, on the premise of reduced training is not influenceed, water outlet are carried out using the compound uncoupling agent of the present invention
Water quality individually adds DNP and increased relatively；
(2) Treatment of Sludge is carried out using the compound uncoupling agent of the present invention, Sludge Property, including settleability and work can be made
Property all be improved significantly；
(3) compound uncoupling agent of the invention can further reduce sludge yield, can also subtract compared to individually DNP is added
Few DNP dosage.
Embodiment：
With reference to embodiment, the present invention is described in further detail.
In example 1 below~9 and comparative example 1~2：
(1) definition of mud decrement rate is：
Wherein, sludge yield 1 is that the sludge yield of uncoupler, sludge yield 2 are not to be added in system in system
Sludge yield after uncoupler；
(2) composition and ratio of uncoupler, as shown in table 1.
Table 1
Embodiment 1
A kind of compound uncoupling agent for mud decrement, including component are 2,4-DNP, nickel chloride and diatom
Smart soil；Wherein, the weight ratio of 2,4-DNP, nickel chloride and diatomite is 1:0.055:0.1055, described diatom
The specific surface area of smart soil is 30m2/g。
The preparation method of the described compound uncoupling agent for mud decrement, comprises the following steps：
(1) by proportioning, 2,4-DNP, nickel chloride and diatomite are weighed respectively；
(2) 2,4-DNP is configured to 2,4-DNP solution, concentration 12mg/L；
(3) 2,4-DNP solution, nickel chloride and diatomite are well mixed, answering for mud decrement is made
Close uncoupler.
Embodiment 2
A kind of compound uncoupling agent for mud decrement, including component are 2,4-DNP, nickel chloride and diatom
Smart soil；Wherein, the weight ratio of 2,4-DNP, nickel chloride and diatomite is 1:0.069:0.20311, described diatom
The specific surface area of smart soil is 50m2/g。
The preparation method of the described compound uncoupling agent for mud decrement, comprises the following steps：
(1) by proportioning, 2,4-DNP, nickel chloride and diatomite are weighed respectively；
(2) 2,4-DNP is configured to 2,4-DNP solution, concentration 11.5mg/L；
(3) 2,4-DNP solution, nickel chloride and diatomite are well mixed, answering for mud decrement is made
Close uncoupler.
Embodiment 3
A kind of compound uncoupling agent for mud decrement, including component are 2,4-DNP, nickel chloride and diatom
Smart soil；Wherein, the weight ratio of 2,4-DNP, nickel chloride and diatomite is 1:0.092:0.33852, described diatom
The specific surface area of smart soil is 55m2/g。
The preparation method of the described compound uncoupling agent for mud decrement, comprises the following steps：
(1) by proportioning, 2,4-DNP, nickel chloride and diatomite are weighed respectively；
(2) 2,4-DNP is configured to 2,4-DNP solution, concentration 9mg/L；
(3) 2,4-DNP solution, nickel chloride and diatomite are well mixed, answering for mud decrement is made
Close uncoupler.
Embodiment 4
A kind of compound uncoupling agent for mud decrement, including component are 2,4-DNP, nickel chloride and diatom
Smart soil；Wherein, the weight ratio of 2,4-DNP, nickel chloride and diatomite is 1:0.11:0.4662, described diatom essence
The specific surface area of soil is 40m2/g。
The preparation method of the described compound uncoupling agent for mud decrement, comprises the following steps：
(1) by proportioning, 2,4-DNP, nickel chloride and diatomite are weighed respectively；
(2) 2,4-DNP is configured to 2,4-DNP solution, concentration 8.5mg/L；
(3) 2,4-DNP solution, nickel chloride and diatomite are well mixed, answering for mud decrement is made
Close uncoupler.
Embodiment 5
A kind of compound uncoupling agent for mud decrement, including component are 2,4-DNP, nickel chloride and diatom
Smart soil；Wherein, the weight ratio of 2,4-DNP, nickel chloride and diatomite is 1:0.138:0.6259, described diatom
The specific surface area of smart soil is 42m2/g。
The preparation method of the described compound uncoupling agent for mud decrement, comprises the following steps：
(1) by proportioning, 2,4-DNP, nickel chloride and diatomite are weighed respectively；
(2) 2,4-DNP is configured to 2,4-DNP solution, concentration 8mg/L；
(3) 2,4-DNP solution, nickel chloride and diatomite are well mixed, answering for mud decrement is made
Close uncoupler.
Embodiment 6
A kind of compound uncoupling agent for mud decrement, including component are 2,4-DNP, nickel chloride and diatom
Smart soil；Wherein, the weight ratio of 2,4-DNP, nickel chloride and diatomite is 1:0.183:0.79261, described diatom
The specific surface area of smart soil is 48m2/g。
The preparation method of the described compound uncoupling agent for mud decrement, comprises the following steps：
(1) by proportioning, 2,4-DNP, nickel chloride and diatomite are weighed respectively；
(2) 2,4-DNP is configured to 2,4-DNP solution, concentration 7.5mg/L；
(3) 2,4-DNP solution, nickel chloride and diatomite are well mixed, answering for mud decrement is made
Close uncoupler.
Embodiment 7
A kind of compound uncoupling agent for mud decrement, including component are 2,4-DNP, nickel chloride and diatom
Smart soil；Wherein, the weight ratio of 2,4-DNP, nickel chloride and diatomite is 1:0.22:0.9638, described diatom essence
The specific surface area of soil is 46m2/g。
The preparation method of the described compound uncoupling agent for mud decrement, comprises the following steps：
(1) by proportioning, 2,4-DNP, nickel chloride and diatomite are weighed respectively；
(2) 2,4-DNP is configured to 2,4-DNP solution, concentration 6.5mg/L；
(3) 2,4-DNP solution, nickel chloride and diatomite are well mixed, answering for mud decrement is made
Close uncoupler.
Embodiment 8
A kind of compound uncoupling agent for mud decrement, including component are 2,4-DNP, nickel chloride and diatom
Smart soil；Wherein, the weight ratio of 2,4-DNP, nickel chloride and diatomite is 1:0.275:1.122, described diatom essence
The specific surface area of soil is 35m2/g。
The preparation method of the described compound uncoupling agent for mud decrement, comprises the following steps：
(1) by proportioning, 2,4-DNP, nickel chloride and diatomite are weighed respectively；
(2) 2,4-DNP is configured to 2,4-DNP solution, concentration 6mg/L；
(3) 2,4-DNP solution, nickel chloride and diatomite are well mixed, answering for mud decrement is made
Close uncoupler.
Embodiment 9
A kind of compound uncoupling agent for mud decrement, including component are 2,4-DNP, nickel chloride and diatom
Smart soil；Wherein, the weight ratio of 2,4-DNP, nickel chloride and diatomite is 1:0.37:1.37, described diatomite
Specific surface area be 60m2/g。
The preparation method of the described compound uncoupling agent for mud decrement, comprises the following steps：
(1) by proportioning, 2,4-DNP, nickel chloride and diatomite are weighed respectively；
(2) 2,4-DNP is configured to 2,4-DNP solution, concentration 5.5mg/L；
(3) 2,4-DNP solution, nickel chloride and diatomite are well mixed, answering for mud decrement is made
Close uncoupler.
Comparative example 1
A kind of compound uncoupling agent for mud decrement, its composition are 2,4-DNP, and preparation method is：
2,4-DNP is weighed, is configured to 2,4-DNP solution, concentration 12mg/L, as sludge
The compound uncoupling agent of decrement.
Comparative example 2
A kind of compound uncoupling agent for mud decrement, including component are 2,4-DNP and nickel chloride；Wherein,
The weight of 2,4- dinitrophenol and nickel chloride ratio is 1:0.069 its preparation method, comprises the following steps：
(1) by proportioning, 2,4-DNP and nickel chloride are weighed respectively；
(2) 2,4-DNP is configured to 2,4-DNP solution, concentration 11.5mg/L；
(3) 2,4-DNP solution and nickel chloride are well mixed, the compound uncoupling for mud decrement is made
Agent.
The compound uncoupling agent for mud decrement prepared to above example 1~9 and comparative example 1~2, use are following
Method carries out waste water dam test：
The sewage of experiment is simulated domestic wastewater, and influent quality is：
COD：300mg/L；
TN：50~60mg/L；
TP：2~3mg/L；
PH：7.6；
Sewage is handled using sequencing batch activated sludge (SBR techniques), reactor volume 4.5L, the technique bar of operation
Part is：
Sludge loading：About 0.2kgCOD/ (kgMLSSd)；
Reaction temperature：20~30 DEG C；
Dissolved oxygen：4~6mg/L；
In embodiment 1~9 and comparative example 1~2, uncoupler dosage (with DNP densimeters) and experimental test in sewage
As a result, as shown in table 2：
Table 2
Claims (4)
- A kind of 1. compound uncoupling agent for mud decrement, it is characterised in that including component it is 2,4-DNP, it is solvable Property nickel salt solute and diatomite；Wherein, the weight ratio of 2,4-DNP, soluble nickel salt and diatomite is 1： (0.055~0.37)：(0.1055~1.37).
- 2. the compound uncoupling agent according to claim 1 for mud decrement, it is characterised in that described soluble nickel Salt is nickel chloride.
- 3. the compound uncoupling agent according to claim 1 for mud decrement, it is characterised in that described diatomite Specific surface area be 30~60m2/g。
- 4. the preparation method of the compound uncoupling agent for mud decrement described in claim 1, it is characterised in that including following Step：(1) by proportioning, 2,4-DNP, soluble nickel salt and diatomite are weighed respectively；(2) 2,4-DNP is configured to 2,4-DNP solution, concentration is 5.5~12mg/L；(3) 2,4-DNP solution, soluble nickel salt and diatomite are well mixed, answering for mud decrement is made Close uncoupler.
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