CN107253816A - A kind of sludge conditioning device and its conditioning technique - Google Patents
A kind of sludge conditioning device and its conditioning technique Download PDFInfo
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- CN107253816A CN107253816A CN201710595056.XA CN201710595056A CN107253816A CN 107253816 A CN107253816 A CN 107253816A CN 201710595056 A CN201710595056 A CN 201710595056A CN 107253816 A CN107253816 A CN 107253816A
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- 239000010802 sludge Substances 0.000 title claims abstract description 147
- 230000003750 conditioning effect Effects 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000006243 chemical reaction Methods 0.000 claims abstract description 60
- 230000001662 opsonic effect Effects 0.000 claims abstract description 55
- 238000001556 precipitation Methods 0.000 claims abstract description 50
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical group Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims abstract description 16
- 230000008569 process Effects 0.000 claims abstract description 15
- 238000010992 reflux Methods 0.000 claims abstract description 11
- 230000001590 oxidative effect Effects 0.000 claims abstract description 10
- 239000003054 catalyst Substances 0.000 claims description 7
- 239000007800 oxidant agent Substances 0.000 claims description 7
- 230000014759 maintenance of location Effects 0.000 claims description 5
- 229920005479 Lucite® Polymers 0.000 claims description 4
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 4
- 150000003254 radicals Chemical class 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 238000009792 diffusion process Methods 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 238000006555 catalytic reaction Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 10
- 230000003647 oxidation Effects 0.000 abstract description 8
- 238000007254 oxidation reaction Methods 0.000 abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 27
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 10
- 208000005156 Dehydration Diseases 0.000 description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 8
- 230000018044 dehydration Effects 0.000 description 8
- 238000006297 dehydration reaction Methods 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 4
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 4
- 230000029087 digestion Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 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
- 238000000926 separation method Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- -1 Hydroxyl radical free radical Chemical class 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 239000002253 acid Substances 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
- 239000000470 constituent Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229910001448 ferrous ion Inorganic materials 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000003694 hair properties Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 238000003918 potentiometric titration Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/06—Treatment of sludge; Devices therefor by oxidation
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
Landscapes
- 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)
- General Chemical & Material Sciences (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a kind of sludge conditioning device and its conditioning technique, including opsonic reaction device, agitator and precipitation reactor, agitator is located at the inside of opsonic reaction device, opsonic reaction device is provided with mud inlet, mud mouth and refluxing opening, precipitation reactor is provided with mud mouth, mud mouth of the mud mouth of precipitation reactor by four way valve respectively with opsonic reaction device, refluxing opening, sludge out pipe is connected, sludge after the processing of opsonic reaction device is precipitated into precipitation reactor, sludge after precipitation is discharged without molysite part by sludge out pipe, opsonic reaction device is partly refluxed to containing molysite, said process is repeated jointly with the sludge that newly adds.The present invention is based on high-level oxidation technology, and the molysite being added in sludge is reclaimed using the precipitation method, it is re-used, the oxidizing process of catalysed promoted sludge, so as to improve the dewatering of sludge, and reduces the amount of additional molysite, saves moving funds.
Description
Technical field
The present invention relates to technical field of sludge treatment, in particular to a kind of sludge conditioning device and its conditioning technique.
Background technology
At present, biologic process for treating sewage applies increasingly extensive, but the waste sludge produced in sewage disposal process, then
The obstacle popularized as the technology further genralrlization.Therefore, effective processing disposal of sludge, it is necessary as institute of sewage disposal enterprise
The problem of solution.Existing sludge handling process generally comprises sludge condensation, nurses one's health, dehydration, the step such as disposal.Wherein sludge is adjusted
Reason is to improve the important step of dehydration property, and possibility is provided for follow-up mechanical dewatering process.
In recent years since, relative to traditional heat treatment, the conditioning technology such as flocculence, oxidation conditioning technique is gradually by weight
Depending on.Sludge oxidation conditioning technology, by the Interstitial Water inside sludge, can adsorb water, with reference to water by the decomposition for sludge structure
Free water is converted into Deng with the water constituent that mud granule is combined closely, consequently facilitating the separation of sludge and water.Sludge oxidation conditioning
Method can not only effectively improve the dewatering of sludge, and sludge can be carried out disinfection, to improve the recycling energy of sludge
Power.But although oxidation conditioning technology there are many advantages, but still it is faced with some technical problems, especially prior art operation
Inconvenience, the cost such as custom catalystses such as ferrous salt is higher, is difficult to use, and consumption is difficult to control to, therefore, in order that sludge oxygen
Change conditioning technology to put it over early, it is necessary to use some new technologies, new technology improves conventional thought.This is for dirt
The engineering application of mud oxidation conditioning technique 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 sludge conditioning device and its conditioning technique,
The present invention is a kind of economic, efficient sludge oxidation conditioning technique, based on high-level oxidation technology, is reclaimed and is added to using the precipitation method
Molysite in sludge, re-uses it, is catalyzed the oxidizing process of sludge, so as to improve the dewatering of sludge, and reduces outer
Plus the amount of molysite, save Treatment of Sludge cost.
To achieve the above object, the present invention provides following technical scheme：
A kind of sludge conditioning device, including opsonic reaction device, agitator and precipitation reactor, the agitator are located at conditioning
The inside of reactor, the opsonic reaction device is provided with mud inlet, mud mouth and refluxing opening, and the precipitation reactor is provided with mud extraction
Mouthful, the mud mouth, refluxing opening, sludge out pipe of the mud mouth of the precipitation reactor by four way valve respectively with opsonic reaction device connect
It is logical, pump one is provided between the refluxing opening of four way valve and opsonic reaction device, between four way valve and the mud mouth of opsonic reaction device
Provided with pump two.
Further, the precipitation reactor top is cylinder, and bottom is taper.
Further, the mud mouth of the precipitation reactor is located at its bottom.
Further, the opsonic reaction device is additionally provided with dosing mouth.
Further, the opsonic reaction device and precipitation reactor are lucite material.
In addition, the present invention also provides a kind of sludge conditioning technique carried out using above-mentioned sludge conditioning device, it is anti-by conditioning
The sludge after device processing is answered to be precipitated into precipitation reactor, the sludge after precipitation is discharged without molysite part by sludge out pipe,
Opsonic reaction device is partly refluxed to containing molysite, said process is repeated jointly with the sludge that newly adds.
Further, the sludge conditioning technique is concretely comprised the following steps：
(1) sludge is added in opsonic reaction device, oxidant and catalyst is added into sludge, and adjust pH value；
(2) agitator is opened, promotes diffusion of the free radical in sludge, accelerates extent of reaction；
(3) after conditioning process is completed, the sludge after processing is imported into precipitation reactor and precipitated, is discharged after precipitation
Without molysite part, part containing molysite is used as returned sludge；
(4) add new pending mud, while import the returned sludge in precipitation reactor, then add oxidant and
Catalyst, adjusts pH value, repeats step (2)-(4).
Further, during conditioning, it is 20-35 DEG C to keep opsonic reaction device temperature, and pH is 3-7.5, it is preferable that pH is 3-
7.2。
Further, in opsonic reaction device, sludge retention time is 1 hour.
Further, in precipitation reactor, sludge retention time is 2 hours.
The technological principle of ferrous salt catalyzing hydrogen peroxide and persulfate among utilization sludge employed in the present invention
As shown in formula (1), (2).First, ferrous ion catalyzing hydrogen peroxide and over cure acid ion, generation have strong oxidizing property
Hydroxyl radical free radical or potentiometric titrations, these subsequent free radicals are that extracellular polymeric and sludge in sludge are decomposed in destruction
Cell, is thus converted into Free water by the irreducible water in sludge, so that the moisture in sludge be separated, changes the knot of sludge
Structure, and improve the dehydration property of sludge.
Fe(II)+H2O2→Fe(III)+·OH+OH- (1)
Fe(II)+S2O8 2-→Fe(III)+SO4 2-+·SO4 - (2)
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, and the dewatering that sludge can be improved rapidly (is used as measurement using sludge capillary water absorbing time CST
Index) up to more than 50%.
(2) operating cost is cheap, the mode being catalyzed compared to traditional direct addition ferrous salt, and this technique is due to addition
Precipitation process, can make full use of added ferrous salt, saved cost.
(3) easy to operate, this process structure rationally, is easy to operation, sediment fraction and sludge conditioning part is separated, also sharp
In control and maintenance.
(4) present invention can not only be used for a processing unit applied to specific resistance to filtration process, also can isolated operation to carry
The dehydration property of high sludge, with treatment effeciency height, non-secondary pollution, small accommodation area, the low feature of operating cost.
Brief description of the drawings
Fig. 1 is overall structure diagram of the invention.
In figure：1-opsonic reaction device, 11-agitator, 12-mud inlet, 13-dosing mouth, 14-mud mouth, 15-return
Head piece, 2-precipitation reactor, 21-mud mouth, 3-pump one, 4-pump two, 5-four way valve, 6-sludge out pipe.
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：
As shown in figure 1, a kind of sludge conditioning device, including opsonic reaction device 1, agitator 11 and precipitation reactor 2, stirring
Device 11 is located at the inside of opsonic reaction device 1, and opsonic reaction device 1 is provided with mud inlet 12, mud mouth 14, refluxing opening 15 and dosing mouth
13, precipitation reactor 2 is provided with mud mouth 21, the mud mouth 21 of precipitation reactor 2 by four way valve 5 respectively with opsonic reaction device
1 mud mouth 14, refluxing opening 15, sludge out pipe 6 are connected, and pump one is provided between the refluxing opening 15 of four way valve 5 and opsonic reaction device 1
3, pump 24 is provided between four way valve 5 and the mud mouth 14 of opsonic reaction device 1.The top of precipitation reactor 2 is cylinder, bottom
For taper, mud mouth 21 is located at its bottom, and the precipitation reactor 2 of this kind of shape is conducive to the substep discharge of sludge after precipitation.
Opsonic reaction device 1 is made up of lucite, internal diameter 10cm, and high 20cm, total measurement (volume) is 1.6L.Precipitation reactor 2 is by lucite
It is made, internal diameter 20cm, wherein high 20cm, top half are cylinder, the latter half is cone, and total measurement (volume) is 4.2L.
Using above-mentioned conditioning device carry out sludge conditioning technique be：
(1) sludge is added in opsonic reaction device 1, oxidant and catalyst is added into sludge, and adjust pH value, aoxidized
Agent is hydrogen peroxide or persulfate, and catalyst is divalent iron salt；
(2) agitator 11 is opened, sludge and oxidant, catalyst is sufficiently mixed, promotes expansion of the free radical in sludge
Dissipate, accelerate extent of reaction；
(3) after conditioning process is completed, the sludge after processing is imported into precipitation reactor 2 by pump 24 and precipitated,
In precipitation reactor, sludge retention time is 2 hours, and supernatant (being free of molysite part) is discharged after precipitation；The dirt precipitated
Mud, that is, contain the sludge of molysite as returned sludge；
(4) new pending mud is added to opsonic reaction device 1, while importing returning in precipitation reactor 2 by pump 1
Sludge is flowed, oxidant and catalyst is then added, pH value is adjusted, repeats step (2)-(4).
After opsonic reaction device 1 starts, using second pond sludge to enter mud, its volatile solids material (SS) is 16.1g/L, is waved
Hair property suspended solid material (VSS) is 12.8g/L, and pH is 7.1, and sludge capillary water absorbing time is 45.3s.Opsonic reaction device 1 is transported
Row condition is：20 DEG C of temperature, pH=3, the Treatment of Sludge time is 1 hour, adds 0.03g Fe (II)/gSS, 0.05g peroxidating
Hydrogen/gSS, and add sulfuric acid adjustment pH to 3.After processing, measure its sludge capillary water absorbing time (CST) and reduced rate is shown in
Table 1.
Embodiment two
After opsonic reaction device 1 starts, using second pond sludge to enter mud, its SS is 16.1g/L, and VSS is 12.8g/L, pH
For 7.1, sludge capillary water absorbing time is 45.3s.The service condition of opsonic reaction device 1 is：20 DEG C of temperature, pH=3, during Treatment of Sludge
Between be 1 hour.Sludge 0.8L is added, while the sludge in the precipitation reactor 2 of 0.8L embodiments one that flows back, and add 0.02g mistakes
Hydrogen oxide/gSS, 0.01g Fe (II)/gSS, and add sulfuric acid adjustment pH to 3.After processing, the suction of its sludge capillary is measured
Water time and reduced rate are shown in Table 1.
Embodiment three
After opsonic reaction device 1 starts, using second pond sludge to enter mud, its SS is 16.1g/L, and VSS is 12.8g/L, pH
For 7.1, sludge capillary water absorbing time is 45.3s.The service condition of opsonic reaction device 1 is：25 DEG C of temperature, pH=3, during Treatment of Sludge
Between be 1 hour.Sludge 0.6L is added, while the sludge in the precipitation reactor 2 of 1L embodiments two that flows back, and add 0.02g peroxides
Change hydrogen/gSS, 0.005g Fe (II)/gSS, and add sulfuric acid adjustment pH to 3.After processing, during its sludge capillary water absorbing
Between and reduced rate be shown in Table 1.
Example IV
After opsonic reaction device 1 starts, using second pond sludge to enter mud, its SS is 16.1g/L, and VSS is 12.8g/L, pH
For 7.1, sludge capillary water absorbing time is 45.3s.The service condition of opsonic reaction device 1 is：25 DEG C of temperature, pH=7.1, Treatment of Sludge
Time is 1 hour.Sludge 0.8L is added, while the sludge in the precipitation reactor 2 of 0.8L embodiments three that flows back, and add 0.2g
S2O8 2-/ gSS, 0.01g Fe (II)/gSS.After processing, its sludge capillary water absorbing time and reduced rate are shown in Table 1.
Embodiment five
After opsonic reaction device 1 starts, using second pond sludge to enter mud, its SS is 16.1g/L, and VSS is 12.8g/L, pH
For 7.1, sludge capillary water absorbing time is 45.3s.The service condition of opsonic reaction device 1 is：30 DEG C of temperature, pH=7.1, Treatment of Sludge
Time is 1 hour.Sludge 0.6L is added, while the sludge in the 1L example IVs precipitation reactor 2 that flows back, and add 0.1g
S2O8 2-/ gSS, 0.005g Fe (II)/gSS.After processing, its sludge capillary water absorbing time and reduced rate are shown in Table 1.
Embodiment six
Opsonic reaction device 1 starts, and sludge is enters mud using after anaerobic digestion, and its SS is 33g/L, and VSS is 20g/L, and pH is
7.2, sludge capillary water absorbing time is 208.2s.The service condition of opsonic reaction device 1 is：35 DEG C of temperature, pH=7.2, Treatment of Sludge
Time is 1 hour, adds 0.03g Fe (II)/gSS, 0.4g S2O8 2-/gSS.After processing, during its sludge capillary water absorbing
Between and reduced rate be shown in Table 1.
Embodiment seven
After opsonic reaction device 1 starts, sludge is enters mud still using after anaerobic digestion, and its SS is 33g/L, and VSS is 20g/L,
PH is 7.2, and sludge capillary water absorbing time is 208.2s.The service condition of opsonic reaction device 1 is：35 DEG C of temperature, pH=7.2, sludge
Processing time is 1 hour, adds sludge 0.8L, while the sludge in the precipitation reactor 2 of 0.8L embodiments seven that flows back, and add
0.2g S2O8 2-/gSS, 0.01g Fe (II)/gSS.After processing, its sludge capillary water absorbing time and reduced rate are shown in Table 1.
Embodiment eight
After opsonic reaction device 1 starts, sludge is enters mud still using after anaerobic digestion, and its SS is 33g/L, and VSS is 20g/L,
PH is 7.5, and sludge capillary water absorbing time is 208.2s.The service condition of opsonic reaction device 1 is：At 35 DEG C of temperature, pH=3, sludge
The reason time is 1 hour.Sludge 0.8L is added, while the sludge in the precipitation reactor 2 of 0.8L embodiments seven that flows back, and add
0.02g hydrogen peroxide/gSS, 0.01g Fe (II)/gSS, and add sulfuric acid adjustment pH to 3.After processing, its sludge hair
Thin absorbent time and reduced rate are shown in Table 1.
Table 1 aoxidizes improvement degree of the conditioning device for 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 sludge for the dehydration property of sludge
Improve, can reach more than 50%.The sludge of discharge both can be precipitated directly, separation wherein moisture, can also be further
It is further processed using methods such as mechanical dehydrations.Embodiment one and embodiment six are without reflow step, and remaining embodiment is equal
There is reflow step, embodiment two, three, four, five, seven, eight needs the ferrous amount added to be significantly lower than embodiment one and six, but
It is no less than even more better than embodiment one and six to the dehydration property improvement of sludge.
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 (10)
1. a kind of sludge conditioning device, it is characterised in that including opsonic reaction device, agitator and precipitation reactor, the stirring
Device is located at the inside of opsonic reaction device, and the opsonic reaction device is provided with mud inlet, mud mouth and refluxing opening, the precipitation reactor
Provided with mud mouth, the mud mouth of the precipitation reactor by four way valve respectively with the mud mouth of opsonic reaction device, refluxing opening,
Sludge out pipe is connected, and pump one is provided between four way valve and the refluxing opening of opsonic reaction device, and four way valve goes out with opsonic reaction device
Pump two is provided between mud mouthful.
2. sludge conditioning device according to claim 1, it is characterised in that the precipitation reactor top is cylinder,
Bottom is taper.
3. sludge conditioning device according to claim 2, it is characterised in that the mud mouth of the precipitation reactor is located at it
Bottom.
4. sludge conditioning device according to claim 1, it is characterised in that the opsonic reaction device is additionally provided with dosing mouth.
5. according to any described sludge conditioning devices of claim 1-4, it is characterised in that the opsonic reaction device and precipitation are anti-
It is lucite material to answer device.
6. a kind of sludge conditioning technique carried out using any described sludge conditioning devices of claim 1-5, it is characterised in that
Sludge after the processing of opsonic reaction device is precipitated into precipitation reactor, and the sludge after precipitation is without molysite part by going out
Mud pipe is discharged, and opsonic reaction device is partly refluxed to containing molysite, and said process is repeated jointly with the sludge that newly adds.
7. sludge conditioning technique according to claim 6, it is characterised in that the specific steps of the sludge conditioning technique
For：
(1) sludge is added in opsonic reaction device, oxidant and catalyst is added into sludge, and adjust pH value；
(2) agitator is opened, promotes diffusion of the free radical in sludge, accelerates extent of reaction；
(3) after conditioning process is completed, the sludge after processing is imported into precipitation reactor and precipitated, discharge is free of after precipitation
Molysite part, part containing molysite is used as returned sludge；
(4) new pending mud is added, while importing the returned sludge in precipitation reactor, oxidant and catalysis is then added
Agent, adjusts pH value, repeats step (2)-(4).
8. the sludge conditioning technique according to claim 6 or 7, it is characterised in that during conditioning, keeps opsonic reaction device
Temperature is 20-35 DEG C, and pH is 3-7.5, it is preferable that pH is 3-7.2.
9. sludge conditioning technique according to claim 7, it is characterised in that in opsonic reaction device, sludge retention time
For 1 hour.
10. sludge conditioning technique according to claim 9, it is characterised in that in precipitation reactor, sludge retention time
For 2 hours.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108117244A (en) * | 2018-02-13 | 2018-06-05 | 西安金清泰环境科技有限公司 | A kind of vertical cylinder sludge conditioning device |
| CN108178487A (en) * | 2017-12-07 | 2018-06-19 | 武汉市政工程设计研究院有限责任公司 | A kind of sludge of sewage treatment plant deep dehydration method |
| CN110117142A (en) * | 2019-05-05 | 2019-08-13 | 哈尔滨工业大学（深圳） | A kind of device improving dewatering performance of sludge during sludge oxidation improves |
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