CN107200450A - A kind of oxidation conditioning device and sludge conditioning method for improving dehydration property - Google Patents
A kind of oxidation conditioning device and sludge conditioning method for improving dehydration property Download PDFInfo
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- CN107200450A CN107200450A CN201710594877.1A CN201710594877A CN107200450A CN 107200450 A CN107200450 A CN 107200450A CN 201710594877 A CN201710594877 A CN 201710594877A CN 107200450 A CN107200450 A CN 107200450A
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- agitator
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- 239000010802 sludge Substances 0.000 title claims abstract description 161
- 230000003750 conditioning effect Effects 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims abstract description 42
- 230000003647 oxidation Effects 0.000 title claims abstract description 42
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 42
- 230000018044 dehydration Effects 0.000 title claims abstract description 29
- 238000006297 dehydration reaction Methods 0.000 title claims abstract description 29
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 75
- 229910052742 iron Inorganic materials 0.000 claims abstract description 29
- 238000012545 processing Methods 0.000 claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 claims abstract description 14
- 230000001590 oxidative effect Effects 0.000 claims abstract description 9
- 239000007800 oxidant agent Substances 0.000 claims abstract description 8
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical group OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 17
- 230000014759 maintenance of location Effects 0.000 claims description 9
- 230000001662 opsonic effect Effects 0.000 claims description 9
- -1 persulfuric acid Salt Chemical class 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims 1
- 150000003254 radicals Chemical class 0.000 abstract description 4
- 230000004308 accommodation Effects 0.000 abstract description 2
- 230000003197 catalytic effect Effects 0.000 abstract description 2
- 238000001914 filtration Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 73
- 208000005156 Dehydration Diseases 0.000 description 21
- 239000000463 material Substances 0.000 description 14
- 238000012360 testing method Methods 0.000 description 14
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 10
- 235000003891 ferrous sulphate Nutrition 0.000 description 9
- 239000011790 ferrous sulphate Substances 0.000 description 9
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 9
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 8
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 7
- 230000033228 biological regulation Effects 0.000 description 7
- 239000007787 solid Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- 239000010865 sewage Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000029087 digestion Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 2
- 229920005479 Lucite® Polymers 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 2
- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical compound [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 241000406668 Loxodonta cyclotis Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 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
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910001448 ferrous ion Inorganic materials 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- 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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
-
- 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
Abstract
The present invention relates to a kind of oxidation conditioning device and sludge conditioning method for improving dehydration property, belong to technical field of sludge treatment, the oxidation conditioning device includes reactor, mud inlet, agitator, mud inlet is arranged at reactor upper end, agitator is arranged inside reactor, in addition to Zero-valent Iron part, and Zero-valent Iron part includes zeroth order iron layer and/or zeroth order iron pipe, zeroth order iron layer is arranged at reactor inner surface, and zeroth order iron pipe is arranged inside reactor.Catalytic action using the Zero-valent Iron part of inside reactor to oxidant, produce free radical, sludge is aoxidized, so as to improve the dewatering of sludge in a reaction system, the present invention discloses the sludge conditioning method of application oxidation conditioning device progress.The present invention can not only be used for a processing unit applied to specific resistance to filtration process, also can isolated operation to improve the dehydration property of sludge, with treatment effeciency height, non-secondary pollution, small accommodation area, the low feature of operating cost.
Description
Technical field
The invention belongs to technical field of sludge treatment, and in particular to a kind of oxidation conditioning dress that can improve dehydration property
Put and sludge conditioning method.
Background technology
With the development of China environmental protection cause, substantial amounts of sewage treatment facility, which is put into, to be used, but at sewage
During reason, substantial amounts of waste sludge is generated, is that the operation and maintenance of sewage treatment facility cause white elephant.Therefore,
The processing handling problems of sludge, one to being important problem that sewage disposal enterprise is faced, it is necessary to the efficient sludge of Development of Novel
Treatment technology.The processing procedure of sludge generally comprises sludge condensation, nurses one's health, dehydration, the step such as disposal/reuse.Wherein sludge takes off
Water is moisture in separated sludge, reduces the final steps of sludge volume.But dewater treatment is relied on merely, it is impossible to reach fully
The effect of moisture in separated sludge, it is necessary to first pass around sludge conditioning, to improve the dehydration property of sludge.It is most widely used at present
Sludge conditioning method mainly include flocculant additive process and heat treating process etc., but these method generally existing energy consumptions are higher,
The limitations such as less effective.
In recent years since, oxidation conditioning technique is increasingly becoming the focus of academia's concern, and sludge oxidation conditioning technology can pass through
Oxidant, by the Interstitial Water inside sludge, adsorbs water for the efficient degradation of sludge structure, close with reference to water etc. and mud granule
With reference to water constituent be converted into Free water, in order to follow-up dehydration.Sludge oxidation conditioning method can not only improve sludge
Dewatering, and can to sludge carry out integrated treatment, promote sludge recycling.Sludge oxidation conditioning method is not only
Processing cost is not high, and non-secondary pollution, therefore is a kind of sludge conditioning technique for having very much and being engineered application prospect.This skill
Although art has many advantages, but is still faced with many technical problems, especially prior art operation inconvenience, and custom catalystses are such as
The costs such as ferrous sulfate are higher, apt to deteriorate, are difficult to use, therefore, in order that sludge oxidation conditioning technology is obtained extensively early
General engineering application, just must carry out new breakthrough to sludge oxidation conditioning technology, explore new and effective sludge oxidation work
Skill, this engineering application for aoxidizing conditioning technique for sludge is of great immediate significance.
The content of the invention
For above-mentioned problems of the prior art, the present invention provides a kind of oxidation conditioning dress for improving dehydration property
Put and sludge conditioning method.
To achieve the above object, the present invention provides following technical scheme：
A kind of oxidation conditioning device for improving dehydration property, including reactor, mud inlet, agitator, mud inlet are set
In reactor upper end, agitator is arranged inside reactor, in addition to Zero-valent Iron part, and the Zero-valent Iron part is zeroth order iron layer
And/or zeroth order iron pipe, the zeroth order iron layer is arranged at reactor inner surface, and the zeroth order iron pipe is arranged inside reactor.
Further, the zeroth order iron pipe is vertically arranged, parallel with the agitator.
Further, the reactor lower end is provided with mud mouth, and the reactor upper end is provided with dosing mouth.
Further, zeroth order iron pipe axle centered on the agitator is uniformly arranged on around the agitator.
Further, the reactor is made up of lucite, internal diameter 10cm, high 20cm.
The sludge conditioning method that a kind of oxidation conditioning device described in application is carried out, comprises the following steps：
1. sludge is added in reactor；
2. oxidant is added into sludge, and it is 2~7.5 to adjust pH value；
3. open agitator to be stirred, promote diffusion of the free radical in sludge, accelerate extent of reaction, sludge carries out oxygen
Change opsonic reaction, free radical is for sludge structure efficient degradation, by the Interstitial Water inside sludge, water is adsorbed, with reference to water etc. and dirt
The water constituent that mud particle is combined closely is converted into Free water；
4. operation is completed, the sludge after discharge processing.
Further, the oxidant is hydrogen peroxide or persulfate.
Further, this method is operated at 20~35 DEG C.
Further, sludge retention time is 0.5~1 hour.
The technological principle such as formula (1) of utilization Zero-valent Iron catalyzing hydrogen peroxide and persulfate employed in the present invention,
(2), (3), shown in (4).First, Zero-valent Iron generates ferrous ion by over cure acid ion or acid corrosion, afterwards ferrous iron from
Sub further catalyzing hydrogen peroxide and over cure acid ion, hydroxyl radical free radical or sulfate radical of the generation with strong oxidizing property are certainly
By base, these subsequent free radicals are the extracellular polymeric and sludge cell in destruction decomposition sludge, thus by the constraint in sludge
Water is converted into Free water, so that the moisture in sludge be separated.Then change the structure of sludge, improve the dehydration of sludge
Property.
Fe+H+→Fe(II) (1)
Fe(II)+H2O2→Fe(III)+·OH+OH- (2)
Fe+S2O8 2-→Fe(II)+2SO4 2- (3)
Fe(II)+S2O8 2-→Fe(III)+SO4 2-+·SO4 - (4)
The standard Gibbs free energy of various shown reaction is respectively less than zero above, i.e., spontaneous can carry out.
Beneficial effects of the present invention are as follows：
(1) treatment effeciency is high, can change the structure of sludge rapidly, improves the dewatering of sludge (with sludge capillary water absorbing
Time, CST was used as measurement index) up to more than 50%.(2) operating cost is cheap, is catalyzed compared to traditional using ferrous sulfate
Mode, Zero-valent Iron is cheap, and is dissolved in the iron content in sludge far below ferrous salt.(3) easy to operate, conventional oxidation is adjusted
Science and engineering skill needs to be separately added into molysite, and oxidant and acid etc., operation are complicated, and operational risk is larger, and this technique without adding in addition
Enter molysite, reduce operation difficulty.The present invention can not only be used for a processing unit applied to specific resistance to filtration process, also can be single
Solely operation is to improve the dehydration property of sludge, with treatment effeciency height, non-secondary pollution, small accommodation area, the low spy of operating cost
Point.
Brief description of the drawings
Fig. 1 is a kind of overall structure diagram for the oxidation conditioning device for improving dehydration property of the present invention；
Fig. 2 is a kind of overlooking the structure diagram for the oxidation conditioning device for improving dehydration property of the present invention.
In figure：1 reactor；2 mud inlets；3 agitators；41 zeroth order iron layer；42 zeroth order iron pipes；5 mud mouths；6 dosing mouths.
Embodiment
In order that those skilled in the art more fully understand technical scheme, it is right with reference to the accompanying drawing of the present invention
Technical scheme carries out clear, complete description, and based on the embodiment in the application, those of ordinary skill in the art exist
The other class be the same as Examples obtained on the premise of not making creative work, should all belong to the scope of the application protection.
Embodiment one：
The oxidation conditioning device for the raising dehydration property that the present embodiment one is provided, including reactor 1, mud inlet 2, stirring
Device 3, mud inlet 2 is arranged at the upper end of reactor 1, and agitator 3 is arranged inside reactor 1, and the oxidation conditioning device also includes zero
Valency iron part, Zero-valent Iron part includes zeroth order iron layer 41 and zeroth order iron pipe 42, and zeroth order iron layer 41 is arranged at the inner surface of reactor 1,
The inner surface of reactor 1 is covered, zeroth order iron pipe 42 is vertically arranged inside reactor 1, the present embodiment zeroth order iron pipe 42 is the six roots of sensation,
The axle centered on agitator 3 of zeroth order iron pipe 42 is uniformly arranged on around agitator 3, parallel with agitator 3.The He of zeroth order iron layer 41
The set-up mode of zeroth order iron pipe 42 can increase Zero-valent Iron and the contact area of oxidant, so as to improve its catalytic capability.Reaction
Device 1 is made up of lucite, and internal diameter 10cm, high 20cm, the lower end of reactor 1 is provided with mud mouth 5, and the upper end of reactor 1 is provided with
Dosing mouth 6, setting for mud mouth 5 can conveniently handle the sludge discharge completed, and the setting of dosing mouth 6 can facilitate adding for medicament
Plus.
The present embodiment one provides a kind of sludge conditioning method that application oxidation conditioning device is carried out, including following step simultaneously
Suddenly：
1. using second pond sludge to enter mud, its volatile solids material (SS) is 15.5g/L, VSS material
(VSS) it is 12.4g/L, PH is 7, sludge is added in reactor 1；
2. 0.05g hydrogen peroxide/g SS are added into sludge, and it is 2 to add sulfuric acid regulation pH value；
3. open agitator 3 to be stirred, sludge carries out oxidation opsonic reaction；
4. operation is completed, the sludge after discharge processing.
Reacting service condition is：Temperature is operated at 25~35 DEG C, and the temperature that the present embodiment is used is 25 DEG C, sludge retention
Processing time is 0.5 hour.
The water inlet of the present embodiment one sludge capillary water absorbing time, water outlet sludge capillary water absorbing time and reduced rate are shown in Table 1.
Contrast test one：
Sludge is added into volume in 1L (similarly hereinafter) traditional reactor, to add 1g/L ferrous sulfate, other conditions and sheet
The sludge conditioning method all same of embodiment one.
The water inlet of this contrast test one sludge capillary water absorbing time, water outlet sludge capillary water absorbing time and reduced rate are shown in Table 1.
Embodiment two：
The present embodiment two provide raising dehydration property oxidation conditioning device and embodiment one it is essentially identical, it is identical it
Place is repeated no more, and difference is：Zero-valent Iron part only includes zeroth order iron layer 41.
The sludge conditioning method that the present embodiment two is provided simultaneously, comprises the following steps：
1. using second pond sludge to enter mud, its volatile solids material (SS) is 15.5g/L, VSS material
(VSS) it is 12.4g/L, PH is 7, sludge is added in reactor 1；
2. 0.075g hydrogen peroxide/g SS are added into sludge, and it is 2 to add sulfuric acid regulation pH value；
3. open agitator 3 to be stirred, sludge carries out oxidation opsonic reaction；
4. operation is completed, the sludge after discharge processing.
Reacting service condition is：Temperature is operated at 25~35 DEG C, and the temperature that the present embodiment is used is 25 DEG C, sludge retention
Processing time is 0.5 hour.
The water inlet of the present embodiment two sludge capillary water absorbing time, water outlet sludge capillary water absorbing time and reduced rate are shown in Table 1.
Contrast test two：
Sludge is added in traditional reactor, 1.2g/L ferrous sulfate is added；Other conditions are adjusted with the sludge of the present embodiment two
Reason method all same.
The water inlet of this contrast test two sludge capillary water absorbing time, water outlet sludge capillary water absorbing time and reduced rate are shown in Table 1.
Embodiment three：
The oxidation conditioning device for the raising dehydration property that the present embodiment three is provided is identical with embodiment one, and something in common is not
Repeat again.
The sludge conditioning method that the present embodiment San Tong method is provided, comprises the following steps：
1. using second pond sludge to enter mud, its volatile solids material (SS) is 15.5g/L, VSS material
(VSS) it is 12.4g/L, PH is 7, sludge is added in reactor 1；
2. 0.5g S are added into sludge2O8 2-/ g SS, regulation pH value is 7；
3. open agitator 3 to be stirred, sludge carries out oxidation opsonic reaction；
4. operation is completed, the sludge after discharge processing.
Reacting service condition is：Temperature is operated at 25~35 DEG C, and the temperature that the present embodiment is used is 28 DEG C, sludge retention
Processing time is 0.5 hour.
The water inlet of the present embodiment three sludge capillary water absorbing time, water outlet sludge capillary water absorbing time and reduced rate are shown in Table 1.
Contrast test three：
Sludge is added in traditional reactor, 1g/L ferrous sulfate is added；Other conditions and the sludge conditioning of the present embodiment three
Method all same.
The water inlet of this contrast test three sludge capillary water absorbing time, water outlet sludge capillary water absorbing time and reduced rate are shown in Table 1.
Example IV：
The present embodiment four provide raising dehydration property oxidation conditioning device and embodiment one it is essentially identical, it is identical it
Place is repeated no more, and difference is：Zero-valent Iron part only includes zeroth order iron pipe 42.
The sludge conditioning method that the present embodiment four is provided simultaneously, comprises the following steps：
1. using second pond sludge to enter mud, its volatile solids material (SS) is 15.5g/L, VSS material
(VSS) it is 12.4g/L, PH is 7, sludge is added in reactor 1；
2. 0.7g S are added into sludge2O8 2-/ g SS, regulation pH value is 7；
3. open agitator 3 to be stirred, sludge carries out oxidation opsonic reaction；
4. operation is completed, the sludge after discharge processing.
Reacting service condition is：Temperature is operated at 25~35 DEG C, and the temperature that the present embodiment is used is 28 DEG C, sludge retention
Processing time is 0.5 hour.
The water inlet of the present embodiment four sludge capillary water absorbing time, water outlet sludge capillary water absorbing time and reduced rate are shown in Table 1.
Contrast test four：
Sludge is added in traditional reactor, 1.2g/L ferrous sulfate is added；Other conditions are adjusted with the sludge of the present embodiment four
Reason method all same.
The water inlet of this contrast test four sludge capillary water absorbing time, water outlet sludge capillary water absorbing time and reduced rate are shown in Table 1.
Embodiment five：
The oxidation conditioning device for the raising dehydration property that the present embodiment five is provided is identical with embodiment one, and something in common is not
Repeat again.
The sludge conditioning method that the present embodiment five is provided simultaneously, comprises the following steps：
1. sludge is enters mud using after anaerobic digestion, and its volatile solids material (SS) is 35g/L, VSS material
(VSS) it is 22g/L, PH is 7.3, sludge is added in reactor 1；
2. 0.4g S are added into sludge2O8 2-/ g SS, regulation pH value is 7.3；
3. open agitator 3 to be stirred, sludge carries out oxidation opsonic reaction；
4. operation is completed, the sludge after discharge processing.
Reacting service condition is：Temperature is operated at 25~35 DEG C, and the temperature that the present embodiment is used is 30 DEG C, sludge retention
Processing time is 1 hour.
The water inlet of the present embodiment five sludge capillary water absorbing time, water outlet sludge capillary water absorbing time and reduced rate are shown in Table 1.
Contrast test five：
Sludge is added in traditional reactor, 3g/L ferrous sulfate is added；Other conditions and the sludge conditioning of the present embodiment five
Method all same.
The water inlet of this contrast test five sludge capillary water absorbing time, water outlet sludge capillary water absorbing time and reduced rate are shown in Table 1.
Embodiment six：
The oxidation conditioning device for the raising dehydration property that the present embodiment six is provided is identical with embodiment one, and something in common is not
Repeat again.
The sludge conditioning method that the present embodiment six is provided simultaneously, comprises the following steps：
1. sludge is enters mud using after anaerobic digestion, and its volatile solids material (SS) is 35g/L, VSS material
(VSS) it is 22g/L, PH is 7.3, sludge is added in reactor 1；
2. 0.06g hydrogen peroxide/g SS are added into sludge, it is 2 to add sulfuric acid regulation pH value；
3. open agitator 3 to be stirred, sludge carries out oxidation opsonic reaction；
4. operation is completed, the sludge after discharge processing.
Reacting service condition is：Temperature is operated at 25~35 DEG C, and the temperature that the present embodiment is used is 30 DEG C, sludge retention
Processing time is 1 hour.
The water inlet of the present embodiment six sludge capillary water absorbing time, water outlet sludge capillary water absorbing time and reduced rate are shown in Table 1.
Contrast test six：
Sludge is added in traditional reactor, 3g/L ferrous sulfate is added；Other conditions and the sludge conditioning of the present embodiment six
Method all same.
The water inlet of this contrast test six sludge capillary water absorbing time, water outlet sludge capillary water absorbing time and reduced rate are shown in Table 1.
Embodiment seven：
The oxidation conditioning device for the raising dehydration property that the present embodiment seven is provided is identical with embodiment one, and something in common is not
Repeat again.
The sludge conditioning method that the present embodiment seven is provided simultaneously, comprises the following steps：
1. sludge is enters mud using after anaerobic digestion, and its volatile solids material (SS) is 35g/L, VSS material
(VSS) it is 22g/L, PH is 7.3, sludge is added in reactor 1；
2. 0.08g hydrogen peroxide/g SS are added into sludge, it is 2 to add sulfuric acid regulation pH value；
3. open agitator 3 to be stirred, sludge carries out oxidation opsonic reaction；
4. operation is completed, the sludge after discharge processing.
Reacting service condition is：Temperature is operated at 25~35 DEG C, and the temperature that the present embodiment is used is 35 DEG C, sludge retention
Processing time is 1 hour.
The water inlet of the present embodiment seven sludge capillary water absorbing time, water outlet sludge capillary water absorbing time and reduced rate are shown in Table 1.
Contrast test seven：
Sludge is added in traditional reactor, 3g/L ferrous sulfate is added；Other conditions and the sludge conditioning of the present embodiment seven
Method all same.
The water inlet of this contrast test seven sludge capillary water absorbing time, water outlet sludge capillary water absorbing time and reduced rate are shown in Table 1.
Table 1 aoxidizes improvement degree of the conditioning device for waste sludge dehydration property
Improvement degree (%)=(water inlet CST- water outlet CST)/water inlet CST*100%
Embodiments above illustrates that present invention process has significantly when handling waste sludge for the dehydration property of sludge
Raising, can reach more than 50%.The sludge of discharge both can be precipitated directly, separation wherein moisture, can also enter one
Step is further processed using methods such as mechanical dehydrations.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It may be appreciated other embodiment.
Claims (9)
1. a kind of oxidation conditioning device for improving dehydration property, including reactor, mud inlet, agitator, mud inlet are arranged at
Reactor upper end, agitator is arranged inside reactor, it is characterised in that：Also include Zero-valent Iron part, the Zero-valent Iron part
For zeroth order iron layer and/or zeroth order iron pipe, the zeroth order iron layer is arranged at reactor inner surface, and the zeroth order iron pipe is arranged at reaction
Inside device.
2. the oxidation conditioning device of dehydration property is improved as claimed in claim 1, it is characterised in that：The zeroth order iron pipe is erected
It is straight to set, it is parallel with the agitator.
3. the oxidation conditioning device of dehydration property is improved as claimed in claim 1, it is characterised in that：The reactor lower end
Mud mouth is provided with, the reactor upper end is provided with dosing mouth.
4. the oxidation conditioning device of dehydration property is improved as claimed in claim 1, it is characterised in that：The zeroth order iron pipe with
Axle is uniformly arranged on around the agitator centered on the agitator.
5. the oxidation conditioning device of dehydration property is improved as claimed in claim 1, it is characterised in that：The reactor is by having
Machine glass is made, internal diameter 10cm, high 20cm.
6. the sludge conditioning method that the oxidation conditioning device described in a kind of any one of application Claims 1 to 5 is carried out, its feature exists
In：This method comprises the following steps：
1. sludge is added in reactor；
2. oxidant is added into sludge, and it is 2~7.5 to adjust pH value；
3. open agitator to be stirred, sludge carries out oxidation opsonic reaction；
4. operation is completed, the sludge after discharge processing.
7. sludge conditioning method as claimed in claim 6, it is characterised in that：The oxidant is hydrogen peroxide or persulfuric acid
Salt.
8. sludge conditioning method as claimed in claim 6, it is characterised in that：This method is operated at 20~35 DEG C.
9. the sludge conditioning method as described in any one of claim 6~8, it is characterised in that：Sludge retention time is 0.5~1
Hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710594877.1A CN107200450A (en) | 2017-07-20 | 2017-07-20 | A kind of oxidation conditioning device and sludge conditioning method for improving dehydration property |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710594877.1A CN107200450A (en) | 2017-07-20 | 2017-07-20 | A kind of oxidation conditioning device and sludge conditioning method for improving dehydration property |
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| CN107200450A true CN107200450A (en) | 2017-09-26 |
Family
ID=59911294
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| CN201710594877.1A Pending CN107200450A (en) | 2017-07-20 | 2017-07-20 | A kind of oxidation conditioning device and sludge conditioning method for improving dehydration property |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109081535A (en) * | 2018-08-06 | 2018-12-25 | 同济大学 | A method of improving aerobic digested sludge dewatering |
| CN112174487A (en) * | 2020-10-26 | 2021-01-05 | 太原理工大学 | Microwave coupling Fe0/H2O2Method for rapid sludge dewatering treatment |
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