CN110304800A - A kind of processing method of chemical industry excess sludge - Google Patents
A kind of processing method of chemical industry excess sludge Download PDFInfo
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- 239000010802 sludge Substances 0.000 title claims abstract description 140
- 239000000126 substance Substances 0.000 title claims abstract description 51
- 238000003672 processing method Methods 0.000 title claims abstract description 29
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000003889 chemical engineering Methods 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 30
- 238000002525 ultrasonication Methods 0.000 claims abstract description 25
- 230000003647 oxidation Effects 0.000 claims abstract description 22
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 22
- 230000008569 process Effects 0.000 claims abstract description 18
- 239000006228 supernatant Substances 0.000 claims abstract description 12
- 230000018044 dehydration Effects 0.000 claims abstract description 10
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 10
- 238000010907 mechanical stirring Methods 0.000 claims abstract description 9
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 5
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 5
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 5
- 238000005119 centrifugation Methods 0.000 claims abstract description 5
- 239000000843 powder Substances 0.000 claims abstract description 5
- 238000000527 sonication Methods 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 12
- 239000010865 sewage Substances 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 8
- 239000011575 calcium Substances 0.000 claims description 7
- 230000035484 reaction time Effects 0.000 claims description 7
- 208000011580 syndromic disease Diseases 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 6
- 238000004064 recycling Methods 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 5
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 230000001360 synchronised effect Effects 0.000 abstract description 5
- 238000001784 detoxification Methods 0.000 abstract description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 235000010215 titanium dioxide Nutrition 0.000 description 4
- 102000002322 Egg Proteins Human genes 0.000 description 3
- 108010000912 Egg Proteins Proteins 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 210000004681 ovum Anatomy 0.000 description 3
- 239000002574 poison Substances 0.000 description 3
- 231100000614 poison Toxicity 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 235000011194 food seasoning agent Nutrition 0.000 description 2
- 230000003071 parasitic effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 230000001988 toxicity Effects 0.000 description 2
- 231100000419 toxicity Toxicity 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 238000009279 wet oxidation reaction Methods 0.000 description 2
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 1
- 208000005623 Carcinogenesis Diseases 0.000 description 1
- 239000012028 Fenton's reagent Substances 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000005904 alkaline hydrolysis reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000036952 cancer formation Effects 0.000 description 1
- 231100000504 carcinogenesis Toxicity 0.000 description 1
- 230000005493 condensed matter Effects 0.000 description 1
- 230000009089 cytolysis Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- DNJIEGIFACGWOD-UHFFFAOYSA-N ethanethiol Chemical compound CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 244000000013 helminth Species 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 244000000010 microbial pathogen Species 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 238000003466 welding 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
- C02F11/004—Sludge detoxification
-
- 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
- C02F11/143—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances
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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)
- General Chemical & Material Sciences (AREA)
- Treatment Of Sludge (AREA)
Abstract
The present invention provides a kind of processing methods of chemical industry excess sludge, its technical point is: adding hydrogen peroxide in chemical engineering sludge and carries out oxidation processes, then by hydrogen peroxide, treated that chemical engineering sludge will carry out mechanical stirring, then by the chemical engineering sludge ultrasonication after mechanical stirring, then calcium hydroxide powder is added in chemical engineering sludge after sonication to be handled, then by treated, chemical engineering sludge is stood, excess sludge is removed after centrifugation, obtain supernatant, processing method of the invention realizes the low energy consumption of chemical industry excess sludge, low cost, high efficiency synchronous detoxification dehydration, its moisture content is set to drop to 75% or less from 95%, bio-toxicity EC50 value is up to 90% or more.
Description
Technical field
The invention belongs to chemical plant sewage treatment fields, and in particular to a kind of processing method of chemical industry excess sludge.
Background technique
Chemical industry is the mainstay industry in China, be played an important role for the rapid development of China's economy, but chemical industry
More, especially to generate during chemical wastewater treatment excess sludges is polluted, not only amount is big, but also toxicity is high.The yield of sludge
Account for about the 0.3% ~ 0.5% of total process water yield, if waste water carries out advanced treating, sludge quantity is also possible to 0.5 ~ 1.0 times of increase.Due to
It is the condensed matter of sewage treatment, and to some degree, harmfulness is more serious, more hidden than sewage.According to statistics, China is existing
There are the thousands of families in size chemical industrial park, numerous chemical companies generate tens of thousands of tons of chemical industry excess sludge daily, and the moisture content of sludge is non-
Chang Gao contains pathogen, parasitic ovum and a variety of organic poisons.
Activated sludge process is method for the treatment of city waste water most widely used, most mature in the world.But the method is being handled
During sewage, the excess sludge that a large amount of water content is 98% can be generated, the sludge is other than containing a large amount of organic matter, also
Contain a large amount of parasitic ovum, pathogenic microorganism and heavy metal etc..If mishandling, stench can be generated, causes underground water dirty
Dye, welding threaten the health of the mankind.How to solve the problems, such as that excess sludge bring secondary pollution has become current China's ring
One of the vital task that guarantor worker faces.However, under the restriction of traditional sludge processing technique, Yao Shixian sludge it is harmless
Change, minimizing, recycling, the link of primary core are the dewaterings for improving excess sludge using suitable method, are reduced dirty
The moisture content of mud, to reduce the difficulty of subsequent processing.
The existing method for improving dewatering performance of sludge, such as the 12nd phase of volume 7 " environmental project journal " in December, 2013
In " Fenton oxidation cracks sludge of sewage treatment plant " text, disclosed method is: the sludge in sewage treatment plant's mixing pit is taken,
It is pre-processed using Fenton reagent, sludge volatile suspended solids that treated is reduced, dewatering enhancing.The master of the method
Want the disadvantage is that: (1) H being related to2SO4And H2O2Wait the at high cost of medicaments；(2) there are security risks for reaction；(3) treatment effeciency
It is low.For another example " Chinese water supply and drainage " the 21st phase in 2013 " ozone couples the lysis decrement research to excess sludge with a soda acid " text
In, disclosed method is: being combined using ozone with acidolysis, alkaline hydrolysis and carries out pretreatment to excess sludge, processing result shows surplus
Polysaccharide concentration rises in remaining sludge crushing rate and liquid phase, and sludge average grain diameter decline, dewatering increases.The major defect of the method
Be: (1) ozone generator equipment is huge；(2) unit ozone energy consumption is high, and industrial applications are relatively difficult.
And titanium white waste acid is generated in the acidolysis of Titanium White Production By Sulfuric Acid Process and washing unit, and according to statistics, every production 1
Ton titanium dioxide will generate the spent acid that about 8 tons of mass concentrations are 20% or so, and the sulfuric acid which typically contains 4% or so is sub-
Iron.The method of traditional processing titanium white waste acid is neutralized with lime stone, which not only increases the production cost of enterprise, also will cause
Serious secondary pollution.
Mainly there are burning, landfill, digestion etc. for the traditional processing method of disposal of chemical industry excess sludge both at home and abroad.It burns easy
The dioxin with strong carcinogenesis is generated, and burning is costly, many solidification disposal of waste units transfer to handle using landfill
Chemical industry excess sludge, but due to containing a variety of organic poisons and pathogen helminth (ovum) etc. in sludge, landfill is also easy to produce secondary dirt
Dye, and occupy tract resource, it is difficult to second development and utilization, cost of disposal are high.Emerging sludge disposal technology mainly has heat
Seasoning, wet oxidation etc..The volume of sludge can be greatly decreased in sludge hot seasoning, but initial investment and running cost are used
It is high.Wet oxidation process must operate under high temperature, condition of high voltage, and energy consumption is high, investment is big, it is difficult to realize scale.
Summary of the invention
To solve the above-mentioned problems, the present invention provides a kind of chemical industry excess sludge low energy consumption, low cost, high efficiency synchronous are de-
The method of poison dehydration, specific technical solution are as follows:
The purpose of the present invention is to provide a kind of processing method of chemical industry excess sludge, technical point is: in chemical engineering sludge
It adds hydrogen peroxide and carries out oxidation processes, then treated that chemical engineering sludge will carry out mechanical stirring by hydrogen peroxide, then will be mechanical
Chemical engineering sludge ultrasonication after stirring, then added in chemical engineering sludge after sonication calcium hydroxide powder into
Row processing, then by treated, chemical engineering sludge is stood, and excess sludge is removed after centrifugation, obtains supernatant.
In the embodiment of present aspect having, the specific steps of the processing method of chemical industry excess sludge provided by the invention are such as
Under:
S1 oxidation processes: hydrogen peroxide is added in Xiang Suoshu chemical engineering sludge, and is stirred with the mixing speed of 150 ~ 300r/min to equal
Even, the reaction time is 10 ~ 20min, obtains oxidation mixture；
S2 ultrasonication: carrying out ultrasonication to oxidation mixture obtained in step S1, obtains breaking sludge, described super
The ultrasonic frequency vibratory that sonicated uses for 50 ~ 150KHz, ultrasonic wave acoustic energy density that the ultrasonication uses for
0.3 ~ 0.4W/mL, the action time of the ultrasonic wave are 30 ~ 50min.
S3 adjusts pH value: it is 0.1 ~ 0.15mol/L that substance withdrawl syndrome is added in the breaking sludge being prepared into S2
Ca (OH)2, 10 ~ 20min is stirred, adjusts pH value to 7 ~ 8, reaction stands after stopping and allows to cool to 20 ~ 30 DEG C, obtains sludge
Mixture；
S4 dehydration: mud mixture is centrifuged 20 ~ 30min under 1000 ~ 2000r/min revolving speed；It is separated by filtration to obtain dirt
Mud supernatant and excess sludge, wherein supernatant is recycled to the source water water inlet end of sewage treatment plant, and excess sludge enters recycling
Outlet after treatment process.
In the embodiment of present aspect having, the water content of the chemical engineering sludge in step S1 provided by the invention is 90 ~
95wt.%, the ratio between the chemical engineering sludge and the volume of hydrogen peroxide are 500:1 ~ 2.
In the embodiment of present aspect having, the mass concentration of the hydrogen peroxide in step S1 provided by the invention is 15 ~
20%.
In the embodiment of present aspect having, mixing speed stirring is 200 ~ 250r/ in step S1 provided by the invention
Min, reaction time are 15 ~ 18min.
In the embodiment of present aspect having, the ultrasonic activation that step S2 ultrasonication provided by the invention uses is frequently
Rate is 100 ~ 120KHz, and the ultrasonic wave acoustic energy density that the ultrasonication uses is 0.5W/mL, when the effect of the ultrasonic wave
Between be 40min.
In the embodiment of present aspect having, Ca (OH) described in step S3 provided by the invention2Substance withdrawl syndrome
For 0.13mol/L, pH value is adjusted to 7.5, reaction stands after stopping and allows to cool to 25 DEG C.
In the embodiment of present aspect having, the mud mixture in step S4 provided by the invention turns in 1500r/min
Speed is lower to be centrifuged 25min.
In the embodiment of present aspect having, the water content of the excess sludge in step S4 provided by the invention is 70 ~
80wt.%, the bio-toxicity half-maximal effect concentration EC50 of the excess sludge are 90 ~ 99%.
Beneficial effects of the present invention:
1. a kind of processing method of chemical industry excess sludge provided by the invention aoxidize using hydrogen peroxide straight by chemical reagent
It connects and is acted on treated substance, achieve the effect that enhance dewatering performance of sludge.
2. a kind of processing method of chemical industry excess sludge provided by the invention cracks sludge using ultrasonic wave, make dirt
Most of substance in mud is mutually transferred to liquid phase from sludge, and the distribution of particles for changing sludge occurs.
3. the processing method of chemical industry excess sludge provided by the invention a kind of realize the low energy consumption of chemical industry excess sludge, it is low at
This, high efficiency synchronous detoxification dehydration, make its moisture content from 95% drop to 75% hereinafter, bio-toxicity EC50 value up to 90% or more.
Specific embodiment
Present aspect adds hydrogen peroxide in chemical engineering sludge and carries out oxidation processes, then by hydrogen peroxide treated chemical engineering sludge
Mechanical stirring will be carried out, then by the chemical engineering sludge ultrasonication after mechanical stirring, then change after sonication
It adds calcium hydroxide powder in work sludge to be handled, then by treated, chemical engineering sludge is stood, and is removed after centrifugation remaining dirty
Mud obtains supernatant.
The technical scheme in the embodiments of the invention will be clearly and completely described below, so that the technology of this field
Personnel can better understand advantages and features of the invention, to make apparent boundary to protection scope of the present invention
It is fixed.Embodiment described in the invention is only a part of the embodiment of the present invention, instead of all the embodiments, based on the present invention
In embodiment, those of ordinary skill in the art's every other implementation obtained without making creative work
Example, shall fall within the protection scope of the present invention.
Embodiment 1
A kind of processing method of chemical industry excess sludge, specific steps are as follows:
Step 1, oxidation processes: adding mass concentration in the 500mL chemical engineering sludge that Xiang Suoshu water content is 93wt.% is 17%
1.5mL hydrogen peroxide, and be stirred until homogeneous with the mixing speed of 225r/min, reaction time 17min obtains oxidation mixture；
Step 2, ultrasonication: carrying out ultrasonication to oxidation mixture obtained in step S1, obtain breaking sludge,
The ultrasonic frequency vibratory that the ultrasonication uses is 110KHz, the ultrasonic wave acoustic energy density of the ultrasonication use
For 0.5W/mL, the action time of the ultrasonic wave is 40min.
Step 3 adjusts pH value: it is 0.13mol/L that substance withdrawl syndrome is added in the breaking sludge being prepared into S2
Ca (OH)2, 15min is stirred, adjusts pH value to 7.5, reaction stands after stopping and allows to cool to 25 DEG C, obtains sludge mixing
Object；
Dehydration: mud mixture is centrifuged 25min under 1500r/min revolving speed by step 4；It is separated by filtration to obtain on sludge
Clear liquid and excess sludge, wherein supernatant is recycled to the source water water inlet end of sewage treatment plant, and excess sludge enters recycling treatment
Outlet after process, the water content of excess sludge are 75wt.%, the bio-toxicity half-maximal effect concentration EC50 of the excess sludge
It is 95%.
Embodiment 2
A kind of processing method of chemical industry excess sludge, specific steps are as follows:
Step 1, oxidation processes: adding mass concentration in the 500mL chemical engineering sludge that Xiang Suoshu water content is 90wt.% is 20%
2mL hydrogen peroxide, and be stirred until homogeneous with the mixing speed of 200r/min, reaction time 15min obtains oxidation mixture；
Step 2, ultrasonication: carrying out ultrasonication to oxidation mixture obtained in step S1, obtain breaking sludge,
The ultrasonic frequency vibratory that the ultrasonication uses is 100KHz, the ultrasonic wave acoustic energy density of the ultrasonication use
For 0.5W/mL, the action time of the ultrasonic wave is 40min.
Step 3 adjusts pH value: it is 0.13mol/L that substance withdrawl syndrome is added in the breaking sludge being prepared into S2
Ca (OH)2, 20min is stirred, adjusts pH value to 7.5, reaction stands after stopping and allows to cool to 25 DEG C, obtains sludge mixing
Object；
Dehydration: mud mixture is centrifuged 25min under 1500r/min revolving speed by step 4；It is separated by filtration to obtain on sludge
Clear liquid and excess sludge, wherein supernatant is recycled to the source water water inlet end of sewage treatment plant, and excess sludge enters recycling treatment
Outlet after process, the water content of excess sludge are 80wt.%, the bio-toxicity half-maximal effect concentration EC50 of the excess sludge
It is 90%.
Embodiment 3
A kind of processing method of chemical industry excess sludge, specific steps are as follows:
Step 1, oxidation processes: adding mass concentration in the 500mL chemical engineering sludge that Xiang Suoshu water content is 95wt.% is 15%
1mL hydrogen peroxide, and be stirred until homogeneous with the mixing speed of 250r/min, reaction time 18min obtains oxidation mixture；
Step 2, ultrasonication: carrying out ultrasonication to oxidation mixture obtained in step S1, obtain breaking sludge,
The ultrasonic frequency vibratory that the ultrasonication uses is 120KHz, the ultrasonic wave acoustic energy density of the ultrasonication use
For 0.5W/mL, the action time of the ultrasonic wave is 40min.
Step 3 adjusts pH value: it is 0.13mol/L that substance withdrawl syndrome is added in the breaking sludge being prepared into S2
Ca (OH)2, 20min is stirred, adjusts pH value to 7.5, reaction stands after stopping and allows to cool to 25 DEG C, obtains sludge mixing
Object；
Dehydration: mud mixture is centrifuged 25min under 1500r/min revolving speed by step 4；It is separated by filtration to obtain on sludge
Clear liquid and excess sludge, wherein supernatant is recycled to the source water water inlet end of sewage treatment plant, and excess sludge enters recycling treatment
Outlet after process, the water content of excess sludge are 70wt.%, the bio-toxicity half-maximal effect concentration EC50 of the excess sludge
It is 99%.
A kind of processing method of chemical industry excess sludge provided by the invention carries out oxidation using hydrogen peroxide and passes through chemical reagent
It is directly acted on treated substance, achievees the effect that enhance dewatering performance of sludge, a kind of chemical industry excess sludge provided by the invention
Processing method cracks sludge using ultrasonic wave, and most of substance in sludge is made mutually to be transferred to liquid phase from sludge, changes
The distribution of particles of sludge occurs, a kind of processing method realization chemical industry excess sludge low energy of chemical industry excess sludge provided by the invention
Consumption, low cost, high efficiency synchronous detoxification dehydration, make its moisture content from 95% drop to 75% hereinafter, bio-toxicity EC50 value up to 90% with
On.
The present invention is not limited to above-mentioned preferred forms, anyone can show that other are various under the inspiration of the present invention
The product of form, however, make any variation in its shape or structure, it is all that there is skill identical or similar to the present application
Art scheme, is within the scope of the present invention.
The present invention provides a kind of processing method of chemical industry excess sludge, technical point is: adding in chemical engineering sludge
Hydrogen peroxide carries out oxidation processes, and then by hydrogen peroxide, treated that chemical engineering sludge will carry out mechanical stirring, then by mechanical stirring
Then chemical engineering sludge ultrasonication afterwards adds at calcium hydroxide powder in chemical engineering sludge after sonication
Reason, then by treated, chemical engineering sludge is stood, and excess sludge is removed after centrifugation, obtains supernatant, and processing method of the invention is real
Existing chemical industry excess sludge low energy consumption, low cost, high efficiency synchronous detoxification dehydration make its moisture content drop to 75% hereinafter, raw from 95%
Object toxicity EC50 value is up to 90% or more.
Claims (9)
1. a kind of processing method of chemical industry excess sludge, it is characterised in that: add hydrogen peroxide in chemical engineering sludge and carry out at oxidation
Reason, then by hydrogen peroxide, treated that chemical engineering sludge will carry out mechanical stirring, then by the chemical engineering sludge after mechanical stirring with super
Then sonicated adds calcium hydroxide powder in chemical engineering sludge after sonication and is handled, after then handling
Chemical engineering sludge stand, remove excess sludge after centrifugation, obtain supernatant.
2. a kind of processing method of chemical industry excess sludge according to claim 1, it is characterised in that: the chemical industry is remaining dirty
Specific step is as follows for the processing method of mud:
S1 oxidation processes: hydrogen peroxide is added in Xiang Suoshu chemical engineering sludge, and is stirred with the mixing speed of 150 ~ 300r/min to equal
Even, the reaction time is 10 ~ 20min, obtains oxidation mixture；
S2 ultrasonication: carrying out ultrasonication to oxidation mixture obtained in step S1, obtains breaking sludge, described super
The ultrasonic frequency vibratory that sonicated uses for 50 ~ 150KHz, ultrasonic wave acoustic energy density that the ultrasonication uses for
0.3 ~ 0.4W/mL, the action time of the ultrasonic wave are 30 ~ 50min.
S3 adjusts pH value: the Ca that substance withdrawl syndrome is 0.1 ~ 0.15mol/L being added in the breaking sludge being prepared into S2
(OH)2, 10 ~ 20min is stirred, adjusts pH value to 7 ~ 8, reaction stands after stopping and allows to cool to 20 ~ 30 DEG C, obtains sludge mixing
Object；
S4 dehydration: mud mixture is centrifuged 20 ~ 30min under 1000 ~ 2000r/min revolving speed；It is separated by filtration to obtain dirt
Mud supernatant and excess sludge, wherein supernatant is recycled to the source water water inlet end of sewage treatment plant, and excess sludge enters recycling
Outlet after treatment process.
3. a kind of processing method of chemical industry excess sludge according to claim 2, it is characterised in that: in the step S1
Chemical engineering sludge water content be 90 ~ 95wt.%, the ratio between the chemical engineering sludge and the volume of hydrogen peroxide be 500:1 ~
2。
4. a kind of processing method of chemical industry excess sludge according to claim 2, it is characterised in that: in the step S1
Hydrogen peroxide mass concentration be 15 ~ 20%.
5. a kind of processing method of chemical industry excess sludge according to claim 2, it is characterised in that: in the step S1
Mixing speed stirring is 200 ~ 250r/min, and the reaction time is 15 ~ 18min.
6. a kind of processing method of chemical industry excess sludge according to claim 2, it is characterised in that: the step S2 is super
The ultrasonic frequency vibratory that sonicated uses for 100 ~ 120KHz, ultrasonic wave acoustic energy density that the ultrasonication uses for
0.5W/mL, the action time of the ultrasonic wave are 40min.
7. a kind of processing method of chemical industry excess sludge according to claim 2, it is characterised in that: in the step S3
The Ca (OH)2Substance withdrawl syndrome is 0.13mol/L, adjusts pH value to 7.5, reaction stands after stopping and allows to cool to 25
℃。
8. a kind of processing method of chemical industry excess sludge according to claim 2, it is characterised in that: in the step S4
Mud mixture be centrifuged 25min under 1500r/min revolving speed.
9. a kind of processing method of chemical industry excess sludge according to claim 2, it is characterised in that: in the step S4
The water content of excess sludge be 70 ~ 80wt.%, the bio-toxicity half-maximal effect concentration EC50 of the excess sludge is 90 ~
99%。
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113429100A (en) * | 2021-07-02 | 2021-09-24 | 深圳星河环境股份有限公司 | Double-stage oxidation treatment process for weak-phosphorus combustible sludge under synergistic effect of ultrasonic aeration |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5732799A (en) * | 1980-08-08 | 1982-02-22 | Ebara Infilco Co Ltd | Treatment of sludgelike material |
| CN102424506A (en) * | 2011-10-25 | 2012-04-25 | 南开大学 | Method for promoting anaerobic digestion of excess sludge through pretreatment of ultrasonic waves and hydrogen peroxide |
| CN103359908A (en) * | 2013-06-24 | 2013-10-23 | 中山大学 | Method for improving dehydration performance of residual sludge by assisting oxidization of ferrate by utilizing ultrasonic waves |
| CN105906184A (en) * | 2016-06-14 | 2016-08-31 | 中国电建集团贵阳勘测设计研究院有限公司 | Method and device for dewatering residual sludge of different sewage treatment plants |
| CN106365412A (en) * | 2016-11-14 | 2017-02-01 | 福州大学 | Method for conditioning urban sewage plant excess sludge through ultrasound and Fenton cooperation |
| CN106673383A (en) * | 2016-12-30 | 2017-05-17 | 北京普利科林环境科技有限公司 | Method for strengthening dehydration of petrochemical residual sludge based on physical and chemical combined pretreatment |
-
2019
- 2019-06-06 CN CN201910493489.3A patent/CN110304800A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5732799A (en) * | 1980-08-08 | 1982-02-22 | Ebara Infilco Co Ltd | Treatment of sludgelike material |
| CN102424506A (en) * | 2011-10-25 | 2012-04-25 | 南开大学 | Method for promoting anaerobic digestion of excess sludge through pretreatment of ultrasonic waves and hydrogen peroxide |
| CN103359908A (en) * | 2013-06-24 | 2013-10-23 | 中山大学 | Method for improving dehydration performance of residual sludge by assisting oxidization of ferrate by utilizing ultrasonic waves |
| CN105906184A (en) * | 2016-06-14 | 2016-08-31 | 中国电建集团贵阳勘测设计研究院有限公司 | Method and device for dewatering residual sludge of different sewage treatment plants |
| CN106365412A (en) * | 2016-11-14 | 2017-02-01 | 福州大学 | Method for conditioning urban sewage plant excess sludge through ultrasound and Fenton cooperation |
| CN106673383A (en) * | 2016-12-30 | 2017-05-17 | 北京普利科林环境科技有限公司 | Method for strengthening dehydration of petrochemical residual sludge based on physical and chemical combined pretreatment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113429100A (en) * | 2021-07-02 | 2021-09-24 | 深圳星河环境股份有限公司 | Double-stage oxidation treatment process for weak-phosphorus combustible sludge under synergistic effect of ultrasonic aeration |
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