CN110342762A - A kind of sludge reduction treatment method - Google Patents
A kind of sludge reduction treatment method Download PDFInfo
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- CN110342762A CN110342762A CN201910667331.3A CN201910667331A CN110342762A CN 110342762 A CN110342762 A CN 110342762A CN 201910667331 A CN201910667331 A CN 201910667331A CN 110342762 A CN110342762 A CN 110342762A
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- sludge
- solid
- nano material
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- 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
- C02F11/02—Biological treatment
-
- 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
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
-
- 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
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- 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
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
-
- 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
- C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
-
- 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
Water content is larger after solving the problems, such as Treatment of Sludge the invention discloses a kind of sludge reduction treatment method for being related to technical field of sludge treatment.Technical points are the following steps are included: pre-processing；Aerobic bacterial treatment；Ozone sterilization processing；Add nano material；Impurity sedimentation is separated by solid-liquid separation；Centrifugal solid-liquid separation.The barrier combined between water and Free water is destroyed using nano material, make to combine water energy under centrifuge and pressure effect less than 100 kilograms inside the microbial cell that can be detached from sludge, so as to substantially reduce the volume and weight of microbial cell in sludge, have the function that mud decrement, sludge water content is lesser after having the advantages that processing.
Description
Technical field
The present invention relates to technical field of sludge treatment, especially a kind of sludge reduction treatment method.
Background technique
Often with a large amount of impurity in usual sewage, in sewage disposal process, impurity, which is separated, forms water
The higher sludge of content.Sludge after dewatering, be usually carry out landfill or drying and incinerating, but the higher sludge volume of water content and
Weight is all larger, so that the operation of landfill sludge is time-consuming and laborious, can also require and occupies biggish space, due to the ingredient in sludge
Water, microorganism and organic matter are frequently included, so that sludge directly to be filled to the pollution for being possible to will cause environment, and micro- life
The metabolin of object also usually can give out stench in the air of surrounding, influence people's lives environment.Meanwhile the dirt that water content is high
Mud is also unfavorable for burning.
In existing method for sludge treatment, commonly uses centrifuge and processing is centrifuged to sludge, can effectively divide
The Free water in sludge between microbial cell is separated out, but the combination shipwreck in microbial cell is to pass through the centrifuge separation of centrifuge
Sludge is isolated in processing, so that sludge is still containing a large amount of water after centrifuging treatment, affects the subsequent of sludge
Processing.Therefore the problem that water content is larger after Treatment of Sludge exists in the prior art.
Summary of the invention
In order to overcome the disadvantages mentioned above of the prior art, the object of the present invention is to provide a kind of sludge reduction treatment method, tools
There is the lesser advantage of water content after Treatment of Sludge.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of sludge reduction treatment method, comprising the following steps:
Pretreatment: the sludge for needing decrement treatment is extracted, ultraviolet light irradiation sludge is used；
Aerobic bacterial treatment: aerobic bacterium is added in sludge, is sufficiently mixed and is placed in aerobic environment；
Ozone sterilization processing: ozone gas is prepared using ozone generator, and gas is passed through in sludge；
Addition nano material: nano material being added in sludge, and is sufficiently mixed, and places 2~10 hours, the nanometer material
Material is elemental metals element, and the particle size of the nano material is 2~20 nanometers；
Impurity sedimentation is separated by solid-liquid separation: being precipitated the solid in sludge downwards, is extracted the sludge of precipitating and make the sludge of precipitating
Solid and liquid separation；
Centrifugal solid-liquid separation: remaining solid is centrifuged using centrifuge, and liquid is discharged.
As a further improvement of the present invention: further comprising the steps of in impurity sedimentation solid-liquid separation step:
Flocculating setting: flocculant is added in sludge, and is sufficiently mixed.
As a further improvement of the present invention: further comprising the steps of in impurity sedimentation solid-liquid separation step:
Negative oxygen ion agglomerates impurity: preparing negative oxygen ion using negative oxygen ion generator, and the negative oxygen ion is passed through
Sludge.
As a further improvement of the present invention: further comprising the steps of after the centrifugal solid-liquid separating step:
It is dried: drying and processing is carried out to sludge.
As a further improvement of the present invention: further comprising the steps of after the centrifugal solid-liquid separating step:
It compresses sludge: compressing sludge using press machine.
As a further improvement of the present invention: further comprising the steps of after the impurity settles solid-liquid separation step:
Sewage treatment: the impurity is settled in solid-liquid separation step, recycling storage is carried out by isolated waste water.
As a further improvement of the present invention: further comprising the steps of after the Sewage treatment step:
Waste water reuse: during the waste water of recycling is added in the sludge in aerobic bacterial treatment step, and sufficiently
Mixing.
As a further improvement of the present invention: further comprising the steps of in the addition nano material step:
After being mixed with water with the nano material, then the mixing liquid of the nano material and water poured into sludge.
Compared with prior art, the beneficial effects of the present invention are:
Using ultraviolet light irradiation sludge, the ultraviolet light that ultraviolet lamp issues penetrates the cell membrane and nucleus of microorganism in sludge
And absorption is made the inhereditary material of cell change, to make cellular genetic material loss of activity, had by RNA and DNA base
The fertility for weakening microorganism in sludge of effect, the effect for inhibiting micro organism quantity to increase reach and reduce in microbial cell
Portion combines the total amount of water.
Nitrobacteria and polyP bacteria can purify sludge in aerobic environment, play the effect of denitrogenation dephosphorizing.Nitrobacteria and
PolyP bacteria can consume the carbon source in sludge during handling sewage, can directly affect in sludge the growth of other microorganisms and numerous
It grows, to can also play the growth for inhibiting other microorganisms in sludge.
After ozone is passed through sludge, the aerobic bacterium left in aerobic bacterial treatment step can not only be killed, moreover it is possible to kill
The original microorganism of sludge plays the role of disinfection and deodorization to sludge, and also can effectively inhibit microorganism in sludge
Growth.
Nano material is mixed with sludge, is that nano material by the encytosis of microbial cell enters microbial cell
It is interior, intracellular ROS (active oxygen) is sharply increased, microbial cell is caused to generate oxidative stress, it is thin that destruction microorganism can be played
The effect of born of the same parents' structure, meanwhile, ROS can make cell membrane phospholipid peroxidating, achieve the effect that destroy microbial cell film.By microorganism
Eucaryotic cell structure and cell membrane disruption make the combination water energy in microbial cell is enough to be discharged from cell interior.
After nano material makes microbial cell structure and cell membrane disruption, there is more suspension in the liquid in sludge
Object contains the microbial cell being destroyed in suspended matter.By the precipitating of solid in sludge, sludge is separated water into out, thus
The water content in sludge can be effectively reduced, thus the very effective gross mass and volume for reducing sludge.Again with centrifuge pair
Solid after being separated by solid-liquid separation carries out centrifugal solid-liquid separation, is detached from intracellular combination water to outside, in the process
In, intracellular combination water and extracellular Free water can be separated sludge, the water content being further reduced in sludge, and
It can further promote the combination water in microbial cell to be discharged, to reach the further water content reduced in sludge, reach
To the effect of mud decrement.
Detailed description of the invention
Fig. 1 is flow diagram of the invention.
Specific embodiment
Now in conjunction with Detailed description of the invention, the present invention is further described with embodiment:
Embodiment 1:
A kind of sludge reduction treatment method, as shown in Figure 1, comprising the following steps:
S1, pretreatment: the sludge for needing decrement treatment is extracted, ultraviolet light irradiation sludge is used；
S2, aerobic bacterial treatment: aerobic bacterium is added in sludge, is sufficiently mixed and is placed in aerobic environment；In this reality
It applies in example, aerobic bacterium includes nitrobacteria and polyP bacteria；
S3, ozone sterilization processing: ozone gas is prepared using ozone generator, and gas is passed through in sludge；
S4, addition nano material: nano material is added in sludge, and is sufficiently mixed, places 2~10 hours, nanometer material
Material is elemental metals element, and the particle size of nano material is 2~20 nanometers；After being mixed with water with nano material, then by nanometer
The mixing liquid of material and water pours into sludge；
S5, impurity sedimentation are separated by solid-liquid separation: being precipitated the solid in sludge downwards, extracted the sludge of precipitating and make the dirt of precipitating
Mud solid and liquid separation；
S5a, flocculating setting: flocculant is added in sludge, and is sufficiently mixed；
S6, Sewage treatment: impurity is settled in solid-liquid separation step, recycling storage is carried out by isolated waste water；
S7, waste water reuse: during the waste water of recycling is added in the sludge in aerobic bacterial treatment step, and it is sufficiently mixed
It closes；
S8, centrifugal solid-liquid separation: remaining solid is centrifuged using centrifuge, and liquid is discharged；
S9, drying process: drying and processing is carried out to sludge；
S10, compression sludge: sludge is compressed using press machine.
The present embodiment has the advantage that
Using ultraviolet light irradiation sludge, the ultraviolet light that ultraviolet lamp issues penetrates the cell membrane and nucleus of microorganism in sludge
And absorption is made the inhereditary material of cell change, to make cellular genetic material loss of activity, had by RNA and DNA base
The fertility for weakening microorganism in sludge of effect, the effect for inhibiting micro organism quantity to increase reach and reduce in microbial cell
Portion combines the total amount of water.
Nitrobacteria and polyP bacteria can purify sludge in aerobic environment, play the effect for making sludge denitrification and dephosphorization.Nitre
The carbon source in sludge can be consumed during handling sewage by changing bacterium and polyP bacteria, can directly affect other microorganisms in sludge
Growth and breeding, to can also play the growth for inhibiting other microorganisms in sludge.
After ozone is passed through sludge, the aerobic bacterium left in aerobic bacterial treatment step can not only be killed, moreover it is possible to kill
The original microorganism of sludge plays the role of disinfection and deodorization to sludge, and also can effectively inhibit microorganism in sludge
Growth.
Nano material is mixed with sludge, is that nano material by the encytosis of microbial cell enters microbial cell
It is interior, intracellular ROS (active oxygen) is sharply increased, microbial cell is caused to generate oxidative stress, it is thin that destruction microorganism can be played
The effect of born of the same parents' structure, meanwhile, ROS can make cell membrane phospholipid peroxidating, achieve the effect that destroy microbial cell film.By microorganism
Eucaryotic cell structure and cell membrane disruption make the combination water energy in microbial cell is enough to be discharged from cell interior.
After nano material makes microbial cell structure and cell membrane disruption, there is more suspension in the liquid in sludge
Object contains the microbial cell being destroyed in suspended matter.By the precipitating of solid in sludge, sludge is separated water into out, thus
The water content in sludge can be effectively reduced, thus the very effective gross mass and volume for reducing sludge.Again with centrifuge pair
Solid after being separated by solid-liquid separation carries out centrifugal solid-liquid separation, and intracellular combination water is detached from extracellular under the action of centrifuge
Portion.In this process, intracellular combination water and extracellular Free water can be separated sludge, be further reduced in sludge
Water content, and the combination water in microbial cell can further be promoted to be discharged, be reduced in sludge to reach further
Water content, achieve the effect that mud decrement.
Nano material is poured into sludge again after mixing with water, is sufficiently mixed nano material with sludge together with water, is prevented
Nano material is deposited at one and influences to add the effect that nano material step destroys microbial cell structure and cell membrane, also can
The effect for reducing sludge water content and reducing sludge volume is improved indirectly.
So that the suspended matter in sludge in liquid is flocculated by flocculant, promotes suspended matter to precipitate downwards, play purification sludge
In liquid effect.
Due to containing the more microbial cell for being destroyed eucaryotic cell structure and cell membrane in sludge liquid, so that sludge liquid
Carbon content in body is higher.Sludge liquid is subjected to recycling storage, can not only be spare by the storage of waste water generated in treatment process,
And can be reduced the discharge of wastewater in treatment process, reduce the influence to environment.
The higher waste water of carbon content is added in the sludge in aerobic bacterial treatment step, carbon can be provided to aerobic bacterium
Source reaches recycling for carbon source, so that aerobic bacterium be enable to have sufficient carbon source purification sludge, improves the purification to sludge
Effect.
By drying to sludge, evaporate the moisture in sludge, so that the moisture in sludge is further reduced, into one
Step reduces the water content in sludge, and then reduces the weight of sludge.
Sludge is compressed using press machine, the volume of sludge can be effectively reduced, meanwhile, it also can be by microorganism by compression sludge
Remaining combination water squeezes out in cell, to be further reduced the water content and weight of sludge.
Embodiment 2:
A kind of sludge reduction treatment method, the difference from embodiment 1 is that: in impurity sedimentation solid-liquid separation step,
The following steps are included:
S5b, negative oxygen ion agglomerate impurity: preparing negative oxygen ion using negative oxygen ion generator, and negative oxygen ion is passed through
Sludge.
The present embodiment has the advantage that
In the step of negative oxygen ion agglomerates impurity, negative oxygen ion is contacted with sludge, and influences the electric field in sludge liquid,
Negative oxygen ion can attract the suspended matter in the liquid of sludge, keep suspended matter close to each other and conglomerate, to increase sludge liquid
The settling efficiency of suspended matter in body.
In conclusion after those skilled in the art read file of the present invention, according to the technique and scheme of the present invention with
Technical concept is not necessarily to creative mental labour and makes other various corresponding conversion schemes, belongs to the model that the present invention is protected
It encloses.
Claims (8)
1. a kind of sludge reduction treatment method, it is characterised in that: the following steps are included:
Pretreatment: the sludge for needing decrement treatment is extracted, ultraviolet light irradiation sludge is used；
Aerobic bacterial treatment: aerobic bacterium is added in sludge, is sufficiently mixed and is placed in aerobic environment；
Ozone sterilization processing: ozone gas is prepared using ozone generator, and gas is passed through in sludge；
Addition nano material: nano material being added in sludge, and is sufficiently mixed, and places 2~10 hours, and the nano material is
Elemental metals element, the particle size of the nano material are 2~20 nanometers；
Impurity sedimentation is separated by solid-liquid separation: being precipitated the solid in sludge downwards, is extracted the sludge of precipitating and make the sewage sludge solid of precipitating
It is separated with liquid；
Centrifugal solid-liquid separation: remaining solid is centrifuged using centrifuge, and liquid is discharged.
2. sludge reduction treatment method according to claim 1, it is characterised in that: settled in the impurity and be separated by solid-liquid separation step
It is further comprising the steps of in rapid:
Flocculating setting: flocculant is added in sludge, and is sufficiently mixed.
3. sludge reduction treatment method according to claim 1, it is characterised in that: settled in the impurity and be separated by solid-liquid separation step
It is further comprising the steps of in rapid:
Negative oxygen ion agglomerates impurity: preparing negative oxygen ion using negative oxygen ion generator, and the negative oxygen ion is passed through sludge.
4. sludge reduction treatment method according to claim 1, it is characterised in that: in the centrifugal solid-liquid separating step
Afterwards, further comprising the steps of:
It is dried: drying and processing is carried out to sludge.
5. sludge reduction treatment method according to claim 1, it is characterised in that: in the centrifugal solid-liquid separating step
Afterwards, further comprising the steps of:
It compresses sludge: compressing sludge using press machine.
6. sludge reduction treatment method according to claim 1, it is characterised in that: settled in the impurity and be separated by solid-liquid separation step
It is further comprising the steps of after rapid:
Sewage treatment: the impurity is settled in solid-liquid separation step, recycling storage is carried out by isolated waste water.
7. sludge reduction treatment method according to claim 6, it is characterised in that: after the Sewage treatment step, also
The following steps are included:
Waste water reuse: it during the waste water of recycling is added in the sludge in aerobic bacterial treatment step, and is sufficiently mixed.
8. sludge reduction treatment method according to claim 1, it is characterised in that: in the addition nano material step
In, it is further comprising the steps of:
After being mixed with water with the nano material, then the mixing liquid of the nano material and water poured into sludge.
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| CN201910667331.3A CN110342762A (en) | 2019-07-23 | 2019-07-23 | A kind of sludge reduction treatment method |
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| CN201910667331.3A CN110342762A (en) | 2019-07-23 | 2019-07-23 | A kind of sludge reduction treatment method |
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Application publication date: 20191018 |