CN106116084B - The device and method that processing uses are removed to Heavy Metals in Sludge - Google Patents
The device and method that processing uses are removed to Heavy Metals in Sludge Download PDFInfo
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- CN106116084B CN106116084B CN201610631325.9A CN201610631325A CN106116084B CN 106116084 B CN106116084 B CN 106116084B CN 201610631325 A CN201610631325 A CN 201610631325A CN 106116084 B CN106116084 B CN 106116084B
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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
- C02F11/02—Biological treatment
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Abstract
The device and method that processing uses are removed to Heavy Metals in Sludge, equipment is by reaction vessel, the rabbling mechanism being stirred to the sludge in reaction vessel, the temperature control system for carrying out temperature adjustment to reaction vessel and four part of device is inhaled in the filter that the solution for reacting production in reaction vessel is sucked out constitutes；Method and step are as follows: the prefabricated sulfur bacteria inoculation liquid of S1；S2 opens rabbling mechanism and temperature control system, carries out heavy metal processing for primary sludge and is ready；S3 primary sludge is reacted, and the reaction solution containing heavy metal ion is generated；S4 carries out filter suction processing to reaction solution.This device structure is simple, easy for installation, operating cost is low, easy to use and flexible, dehydrating effect are good, does not generate secondary pollution；This method technological operation is simple, removal efficiency of heavy metals is high, cost is low.
Description
Technical field
The invention belongs to technical field of sludge treatment, in particular to are removed processing use to Heavy Metals in Sludge and set
Standby and method.
Background technique
With further speeding up for urbanization process, city domestic sewage and industrial wastewater are more and more tighter to the pollution of environment
Weight, to mitigate water pollution index, the big-and-middle small city in the whole nation, which largely starts, increases Jian Liao sewage treatment plant, and incident is sewage
Generate a large amount of sludge in treatment process, being piled up arbitrarily of one side sludge is not only taken up an area more, but also can cause secondary pollution；
Microelement needed for another aspect sludge includes N, P, K abundant and plant, has good fertilizer efficiency, and comprehensive nutrient substance contains
Amount is higher than common farmyard manure, if not being used will be huge waste to resource.But simultaneously also containing to people and animals' production in sludge
The heavy metal of raw harm, and heavy metal is different from other pollutants, cannot be degraded by Institute of Micro-biology, once it is easy into soil
It is absorbed by crops, and can be accumulated in plant, harm, thus Heavy Metals in Sludge are generated to people and animals eventually by food chain
As the principal element for limiting its sludge and further utilizing.How to effectively remove heavy metal is to solve specific resistance to filtration and resource
Change the critical problem utilized.
All with severe overweight in the sludge that a large amount of sludge of moat bottom accumulation and land sewage treatment plant generate
Heavy metal can seriously pollute environment and soil without good processing, and then influence the strong of livestock or even human body
Health.Therefore, it is necessary to which the sludge of counterweight overrun metal content is utilized again after being handled.
For a long time, moat bottom accumulation a large amount of sludge and land sewage treatment plant generate sludge all with bury or
Based on person is piled up arbitrarily, pollution not only is caused to surrounding enviroment, also takes up a large amount of land area.It is this not as method
The consequence of generation has gradually obtained the attention of related environmental protection administration.Even if handling the heavy metal in sludge, also the same face
Face that processing cost is high, be easy to cause the problems such as secondary environmental pollution.
Summary of the invention
The present invention is to solve technical problem present in well-known technique and provide a kind of pair of Heavy Metals in Sludge and be removed
The device and method used are handled, the device structure is simple, easy for installation, operating cost is low, easy to use and flexible, dehydrating effect
Well, secondary pollution is not generated；This method technological operation is simple, removal efficiency of heavy metals is high, cost is low.
The technical scheme adopted by the present invention to solve the technical problems existing in the known art is that
The equipment that processing uses is removed to Heavy Metals in Sludge, it is characterised in that: including reaction vessel, reaction vessel
Using tank structure, reaction vessel is fixedly supported on bracket, is equipped with charging interface and moisturizing interface at the top of reaction vessel,
It is equipped with discharging interface in the bottom of reaction vessel, valve is installed in moisturizing interface position；Including rabbling mechanism, the blender
Structure includes that motor, the retarder for connecting motor, the agitating shaft for connecting retarder and the stirrer paddle being mounted on agitating shaft are constituted,
The motor and retarder are fixedly mounted on the top of reaction vessel, and the agitating shaft from top to bottom extend into the interior of reaction vessel
In chamber, the stirrer paddle is multiple groups and is fixed on agitating shaft by spacing up and down；Temperature including carrying out temperature adjustment to reaction vessel
Control system；Device is inhaled including filter, it includes filter screen, air driven pump and collecting tank that device is inhaled in the filter, and the filter screen is mounted on instead
The discharging interface position of container is answered, the feed liquor interface of air driven pump is connected by the discharging interface of outlet tube road and reaction vessel, gas
The liquid interface that goes out of dynamic pump is connect by inlet pipe with collecting tank, and collateral branch's pipeline is connected in inlet pipe, collateral branch's pipeline
Port forms sample tap, is equipped with valve on collateral branch's pipeline.
Preferred: the temperature control system includes the coaming plate being located at outside reaction vessel side wall, the side wall of coaming plate and reaction vessel
Between form annular storage chamber for circulating for temperature control medium, feed liquor interface is equipped on coaming plate and returns liquid interface, feed liquor connects
Mouth and time liquid interface pass through temperature control medium intake line and temperature control medium output pipe respectively and the temperature adjustment storage device of peripheral hardware connects
It connects, circulating pump is installed on temperature control medium output pipe, temperature control system is made to form circulating temperature-regulating circuit.
Preferred: reaction vessel, inlet pipe, outlet tube road and collecting tank are by acidproof 316L stainless steel material system
At.
It is preferred: baffle being installed in collecting tank, is formed between baffle and the one side wall of collecting tank connection inlet pipe
Contamination precipitation area.
It is preferred: lifting lug and trunnion to be provided with outside the side wall of reaction vessel, reaction vessel is fixedly supported on by trunnion
On bracket.
Preferably, the reaction vessel is by cylindrical tank body main part, the respectively upper end with tank body main part
The upper cover part of the half elliptic connected with lower end and the lower head part of taper are constituted, and the charging interface and moisturizing connect
Mouth is arranged on upper cover part, and the discharging interface is arranged on lower head part.
The method that processing is removed to Heavy Metals in Sludge, which is characterized in that the method uses above equipment,
Processing step is as follows:
The prefabricated sulfur bacteria inoculation liquid of S1:
More parts of primary sludge samples are taken from primary sludge to be processed, and more parts of primary sludge samples are carried out carefully according to sequencing
The enrichment culture of bacterium；For every part of primary sludge sample, it is both needed to that sulphur powder is added in the ratio of 10g/L, is placed in 100r/min and temperature
Shaken cultivation is carried out in the insulating box of 28 ° of degree, the pH value in mud sample to be generated drops to 2.0 hereinafter, the culture that stops oscillation, reaction
Inoculation liquid is generated, in addition, being required to successively connect what preceding a primary sludge example reaction generated in addition to first part of primary sludge sample
Kind liquid according to 5% inoculum concentration after being added in a primary sludge sample；It is evaporated during Bacteria Culture using weighing method supplement
Moisture content, by multiple enrichment culture, the last portion resulting mixed liquor of primary sludge example reaction is available after taming
In the sulfur bacteria inoculation liquid of sludge heavy-metal bioleaching, Thiobacillus ferrooxidans and oxygen are mainly contained in sulfur bacteria inoculation liquid
Change sulphur Thiobacillus；
S2 opens rabbling mechanism and temperature control system, and the velocity of rotation of stirrer paddle is made to be maintained at 60~100r/min, keeps
Temperature in reaction vessel carries out heavy metal processing for primary sludge and is ready between 28~35 DEG C；
S3 primary sludge is reacted, and the reaction solution containing heavy metal ion is generated:
It first passes through charging interface and primary sludge to be processed is added into reaction vessel, then energy matter is added into primary sludge
The sulfur bacteria inoculation liquid of elemental sulfur and first step production, connects primary sludge, elemental sulfur and sulfur bacteria by the stirring of stirrer paddle
Kind liquid is sufficiently mixed, and when the moisture content of mixed primary sludge is lower than sets requirement, is opened the valve of moisturizing interface position, is led to
It crosses moisturizing interface and adds water into reaction vessel；Under the stirring of stirrer paddle, the Thiobacillus ferrooxidans in primary sludge is promoted
Fertility is accelerated in contact with Thiobacillus thioxidans with oxygen, with the progress of reaction, one side Thiobacillus ferrooxidans and
Thiobacillus thioxidans directly adsorbs in metal in sludge sulfide surface by the Extracellular polymers of its secretion, by intracellular special
Some oxidizing ferment directed oxidation metal sulfide generates soluble sulphate；Solution acidity liter in another aspect reaction vessel
Height makes the microbiosis opportunistic pathogen in primary sludge be killed；
S4 carries out filter suction processing to reaction solution:
After primary sludge reacts a period of time in reaction vessel, air driven pump is opened, makes air driven pump first in the state of low-power
Lower operation, under the swabbing action of air driven pump, the reaction solution produced in reaction vessel is through outlet tube road, air driven pump and inlet pipe
It is inhaled into collecting tank, the filter screen that discharging interface position is arranged in can fall sludge contaminant filter, avoid being sucked into together
In collecting tank；During filtering suction, the valve on collateral branch's pipeline is opened, sample is extracted reaction solution by sample tap, passes through detection
The pH value of reaction solution come determine reaction whether complete, when reaction solution pH value be in 2 hereinafter, i.e. it is believed that reaction complete；Then will
Air driven pump is adjusted to maximum power, and the reaction solution in reaction vessel is made quickly to be drawn into collecting tank, separates Heavy Metals in Sludge
It gets rid of.
The advantages and positive effects of the present invention are:
This equipment is mainly inhaled four part of device by reaction vessel, rabbling mechanism, temperature control system and filter and is constituted, and has structure letter
Single, easy for installation, the advantages of operating cost is low, easy to use and flexible, in addition, inhaling device by filter can reach preferable dehydration effect
Fruit, in this way reaction production heavy metal ion with dehydration be discharged from sludge, so that the recycling of sludge can be realized, avoid
Secondary pollution generation.This method is by adding certain Thiobacillus ferrooxidans and Thiobacillus thioxidans into sludge the bottom of as
The effects of object acquisition energy, oxidation reinforced, reduction, complexing, absorption, dissolution, the pH value of sludge system is reduced, the weight of indissoluble state is made
Metal is extracted into liquid phase from solid phase, then achievees the purpose that remove Heavy Metals in Sludge by dehydration, has technological operation letter
Advantage single, removal efficiency of heavy metals is high, cost is low.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that the present invention uses equipment.
In figure: 1, reaction vessel；1-1, tank body main part；1-2, upper cover part；1-2-1, charging interface；1-2-2,
Moisturizing interface；1-3, lower head part；1-3-1, discharging interface；2, rabbling mechanism；2-1, motor；2-2, retarder；2-3, it stirs
Mix axis；2-4, stirrer paddle；3, temperature control system；3-1, coaming plate；3-1-1, feed liquor interface；3-1-2, go out liquid interface；3-2, annular
Storage chamber；3-3, temperature control medium intake line；3-4, temperature control medium output pipe；3-5, temperature adjustment storage device；3-6, circulating pump；
4, device is inhaled in filter；4-1, filter screen；4-2, air driven pump；4-3, collecting tank；4-4, outlet tube road；4-5, inlet pipe；4-6, side
Bye-pass；4-7, baffle；5, lifting lug；6, trunnion.
Specific embodiment
In order to further understand the content, features and effects of the present invention, the following examples are hereby given, and cooperate attached drawing
Detailed description are as follows:
The equipment that processing uses is removed to Heavy Metals in Sludge to be mainly made of following sections referring to Figure 1:
Including reaction vessel 1, reaction vessel uses tank structure, and reaction vessel is fixedly supported on bracket, and bracket is attached
It is not illustrated in figure.It is equipped with charging interface 1-2-1 and moisturizing interface 1-2-2 at the top of reaction vessel, at the bottom of reaction vessel
Portion is equipped with discharging interface 1-3-1, is equipped with valve in moisturizing interface position.Above-mentioned charging interface is in opening-wide state, convenient for sky
Air-flow is logical.
Including rabbling mechanism 2, the rabbling mechanism includes motor 2-1, the retarder 2-2 for connecting motor, connection retarder
Agitating shaft 2-3 and the stirrer paddle 2-4 that is mounted on agitating shaft constitute.The motor and retarder, which are fixedly mounted on reaction, to be held
The top of device, the agitating shaft are from top to bottom extend into the inner cavity of reaction vessel, and the stirrer paddle is multiple groups and presses up and down
Spacing is fixed on agitating shaft, can guarantee that the greatest extent primary sludge is sufficiently stirred in reaction vessel in this way.
Temperature control system 3 including carrying out temperature adjustment to reaction vessel, primary sludge in reaction vessel is adjusted by temperature control system
Reaction temperature, so that Thiobacillus ferrooxidans and the Thiobacillus thioxidans speed of growth is in optimum state.
Device 4 is inhaled including filter, the effect that device is inhaled in filter is: the reaction solution of reaction production being siphoned away, since heavy metal is anti-
During answering, it is extracted into liquid phase from solid phase, in this way, being achieved that the removal of Heavy Metals in Sludge.Device filtering is inhaled in the filter
Net 4-1, air driven pump 4-2 and collecting tank 4-3, the filter screen is mounted on the discharging interface position of reaction vessel, air driven pump into
Liquid interface is connected by the discharging interface of outlet tube road 4-4 and reaction vessel, and the liquid interface that goes out of air driven pump passes through inlet pipe 4-5
It is connect with collecting tank, collateral branch pipeline 4-6 is connected in inlet pipe, the port of collateral branch's pipeline forms sample tap, manages in collateral branch
Road is equipped with valve, and the on-off of collateral branch's pipeline is controlled by the valve.
In above structure, the effect of the temperature control system is in the environment of lower or higher temperature, to reaction vessel pair
Heating or cooling processing should be carried out, is maintained at the temperature in reaction vessel in suitable temperature ranges.In the present invention, the temperature
Control system includes the coaming plate 3-1 being located at outside reaction vessel side wall, is formed between coaming plate and the side wall of reaction vessel for for temperature adjustment
The annular storage chamber 3-2 of flow of media, on coaming plate be equipped with feed liquor interface 3-1-1 and return liquid interface 3-1-2, feed liquor interface and return
Liquid interface passes through the temperature adjustment storage device 3-5 of temperature control medium intake line 3-3 and temperature control medium output pipe 3-4 and peripheral hardware respectively
Connection, is equipped with circulating pump 3-6 on temperature control medium output pipe, and temperature control system is made to form circulating temperature-regulating circuit.Wherein, above-mentioned
The effect of temperature adjustment storage device is: according to actual working environment, it can be achieved that heating to temperature control medium, can also realize to temperature adjustment
The cooling of medium realizes tune by heating tube energization specifically, heating tube can be arranged in the temperature control medium storage box of peripheral hardware
The heating of warm medium, while refrigeration coil is set on the side wall of temperature control medium storage box, refrigeration coil is connect with refrigeration system,
The cooling of temperature control medium is realized by the operation of refrigeration system.
In above structure, reaction vessel, inlet pipe, outlet tube road and collecting tank are preferably by acidproof 316L stainless steel
Material is made.
In above structure, baffle 4-7 is installed in collecting tank, baffle connect with collecting tank inlet pipe one side wall it
Between formed contamination precipitation area.By the way that baffle is arranged, the heavy impurity that can not filter out filter screen is trapped in contamination precipitation area, and
Deposition is got off, to facilitate the later period to be further processed reaction solution.
In above structure, lifting lug 5 and trunnion 6 are further provided with outside the side wall of reaction vessel, reaction vessel passes through branch
Ear is fixedly supported on bracket, avoids reaction vessel and the phenomenon that falling off or rocking occurs.And the setting of lifting lug, it facilitates and sets
Standby mobile and lifting.
In above structure, the reaction vessel preferably by cylindrical tank body main part 1-1, respectively with tank body main part
The upper cover part 1-2 of the half elliptic of the upper and lower end connection divided and the lower head part 1-3 of taper are constituted, described
It feeds interface and moisturizing interface is arranged on upper cover part, the discharging interface is arranged on lower head part.Reaction vessel
Using the structure, there is the advantages of feeding is convenient, discharge is light, does not remain and is convenient for cleaning.
To the method that Heavy Metals in Sludge is removed processing, the method uses above-mentioned equipment, referring to Figure 1,
Its processing step is as follows:
The prefabricated sulfur bacteria inoculation liquid of S1:
More parts of primary sludge samples are taken from primary sludge to be processed, and more parts of primary sludge samples are carried out carefully according to sequencing
The enrichment culture of bacterium；For every part of primary sludge sample, it is both needed to that sulphur powder is added in the ratio of 10g/L, is i.e. adds in every liter of primary sludge
The sulphur powder for entering 10 grams is placed in 100r/min and 28 ° of temperature of sad incubator and carries out shaken cultivation, in mud sample to be generated
PH value drops to 2.0 hereinafter, the culture that stops oscillation, reaction generates inoculation liquid, in addition, being required in addition to first part of primary sludge sample
After successively the inoculation liquid that preceding a primary sludge example reaction generates is added to according to 5% inoculum concentration in a primary sludge sample,
5 parts of inoculation liquids are added in i.e. every 100 parts of primary sludges；The moisture content evaporated is supplemented using weighing method during Bacteria Culture, is passed through
Multiple enrichment culture, the last portion resulting mixed liquor of primary sludge example reaction are that can be used for sludge heavy-metal after taming
The sulfur bacteria inoculation liquid of bioleaching, mainly contains Thiobacillus ferrooxidans and Thiobacillus thioxidans in sulfur bacteria inoculation liquid.
S2 opens rabbling mechanism and temperature control system, and the velocity of rotation of stirrer paddle is made to be maintained at 60~100r/min, keeps
Temperature in reaction vessel carries out heavy metal processing for primary sludge and is ready between 28-35 DEG C.
S3 primary sludge is reacted, and the reaction solution containing heavy metal ion is generated:
It first passes through charging interface and primary sludge to be processed is added into reaction vessel, then energy matter is added into primary sludge
The sulfur bacteria inoculation liquid of elemental sulfur and first step production, connects primary sludge, elemental sulfur and sulfur bacteria by the stirring of stirrer paddle
Kind liquid is sufficiently mixed, and when the moisture content of mixed primary sludge is lower than sets requirement, is opened the valve of moisturizing interface position, is led to
It crosses moisturizing interface and adds water into reaction vessel；Under the stirring of stirrer paddle, the Thiobacillus ferrooxidans in primary sludge is promoted
Fertility is accelerated in contact with Thiobacillus thioxidans with oxygen, with the progress of reaction, one side Thiobacillus ferrooxidans and
Thiobacillus thioxidans directly adsorbs in metal in sludge sulfide surface by the Extracellular polymers of its secretion, by intracellular special
Some oxidizing ferment directed oxidation metal sulfide generates soluble sulphate, specific equation are as follows: chemical equation indicates are as follows:
MS+2O2→MSO4→M2++SO42-；Solution acidity in another aspect reaction vessel increases, and makes the microorganism cause of disease in primary sludge
Bacterium is killed.
S4 carries out filter suction processing to reaction solution:
After primary sludge reacts a period of time in reaction vessel, air driven pump is opened, makes air driven pump first in the state of low-power
Lower operation, under the swabbing action of air driven pump, the reaction solution produced in reaction vessel is through outlet tube road, air driven pump and inlet pipe
It is inhaled into collecting tank, the filter screen that discharging interface position is arranged in can fall sludge contaminant filter, avoid being sucked into together
In collecting tank；During filtering suction, the valve on collateral branch's pipeline is opened, sample is extracted reaction solution by sample tap, passes through detection
The pH value of reaction solution come determine reaction whether complete, when reaction solution pH value be in 2 hereinafter, i.e. it is believed that reaction complete；Then will
Air driven pump is adjusted to maximum power, and the reaction solution in reaction vessel is made quickly to be drawn into collecting tank, divides Heavy Metals in Sludge
It leaves away and removes.
The present invention on the basis of purification of metals technology, passes through Thiobacillus ferrooxidans and Thiobacillus thioxidans in minerals
Redox under obtain energy, by motor drive agitator arm be stirred in reaction vessel, make the dirt of bottom
Mud also can well in ingress of air oxygen, with the heavy metal in microbial process removal sludge.Novelty of the invention
It is microorganism spray process technical application in the improvement field of sludge heavy-metal, it will by the various chemical reactions of microorganism
Heavy Metals in Sludge is converted to ionic condition, meanwhile, a set of filter is mounted in present apparatus bottom discharging mouth and inhales device, by pneumatic
Solution in sludge is discharged for the effect of pump, to achieve the effect that heavy metal is separated with sludge.The present invention overcomes previous weights
The problems such as metal processing is inconvenient, processing cost is high, secondary pollution is serious.
Claims (7)
1. pair Heavy Metals in Sludge is removed the equipment that processing uses, it is characterised in that: including reaction vessel, reaction vessel is adopted
With tank structure, reaction vessel is fixedly supported on bracket, is equipped with charging interface and moisturizing interface at the top of reaction vessel,
The bottom of reaction vessel is equipped with discharging interface, is equipped with valve in moisturizing interface position；Including rabbling mechanism, the rabbling mechanism
Including motor, the retarder that connects motor, the agitating shaft for connecting retarder and the stirrer paddle that is mounted on agitating shaft constitute, institute
It states motor and retarder is fixedly mounted on the top of reaction vessel, the agitating shaft from top to bottom extend into the inner cavity of reaction vessel
In, the stirrer paddle is multiple groups and is fixed on agitating shaft by spacing up and down；Temperature control including carrying out temperature adjustment to reaction vessel
System；Device is inhaled including filter, it includes filter screen, air driven pump and collecting tank that device is inhaled in the filter, and the filter screen is mounted on reaction
The feed liquor interface of the discharging interface position of container, air driven pump is connected by the discharging interface of outlet tube road and reaction vessel, pneumatically
The liquid interface that goes out of pump is connect by inlet pipe with collecting tank, and collateral branch's pipeline, the end of collateral branch's pipeline are connected in inlet pipe
Mouth forms sample tap, is equipped with valve on collateral branch's pipeline.
2. according to claim 1 be removed the equipment that processing uses to Heavy Metals in Sludge, it is characterised in that: described
Temperature control system includes the coaming plate being located at outside reaction vessel side wall, is formed between coaming plate and the side wall of reaction vessel for being situated between for temperature adjustment
The logical annular storage chamber of mass flow is equipped with feed liquor interface on coaming plate and returns liquid interface, and feed liquor interface passes through respectively with liquid interface is returned
The temperature adjustment storage device of temperature control medium intake line and temperature control medium output pipe and peripheral hardware connection, in temperature control medium output pipe
On circulating pump is installed, make temperature control system formed circulating temperature-regulating circuit.
3. according to claim 1 be removed the equipment that processing uses to Heavy Metals in Sludge, it is characterised in that: reaction
Container, inlet pipe, outlet tube road and collecting tank are made of acidproof 316L stainless steel material.
4. according to claim 1 be removed the equipment that processing uses to Heavy Metals in Sludge, it is characterised in that: collecting
Baffle is installed in liquid bath, forms contamination precipitation area between baffle and the one side wall of collecting tank connection inlet pipe.
5. according to claim 1 be removed the equipment that processing uses to Heavy Metals in Sludge, it is characterised in that: anti-
It answers and is provided with lifting lug and trunnion outside the side wall of container, reaction vessel is fixedly supported on bracket by trunnion.
6. according to claim 1 be removed the equipment that processing uses to Heavy Metals in Sludge, it is characterised in that: described
The semiellipse that reaction vessel is connect by cylindrical tank body main part, respectively with the upper and lower end of tank body main part
The upper cover part of shape and the lower head part of taper are constituted, and the charging interface and moisturizing interface are arranged in upper cover part
On, the discharging interface is arranged on lower head part.
7. the method that pair Heavy Metals in Sludge is removed processing, which is characterized in that the method uses above equipment, place
Steps are as follows for reason:
The prefabricated sulfur bacteria inoculation liquid of S1:
More parts of primary sludge samples are taken from primary sludge to be processed, and bacterium is carried out according to sequencing to more parts of primary sludge samples
Enrichment culture；For every part of primary sludge sample, it is both needed to that sulphur powder is added in the ratio of 10g/L, is placed in 100r/min and temperature
Shaken cultivation is carried out in 28 ° of insulating box, the pH value in mud sample to be generated drops to 2.0 hereinafter, the culture that stops oscillation, reaction
Inoculation liquid is generated, in addition, being required to successively connect what preceding a primary sludge example reaction generated in addition to first part of primary sludge sample
Kind liquid according to 5% inoculum concentration after being added in a primary sludge sample；It is evaporated during Bacteria Culture using weighing method supplement
Moisture content, by multiple enrichment culture, the last portion resulting mixed liquor of primary sludge example reaction is available after taming
In the sulfur bacteria inoculation liquid of sludge heavy-metal bioleaching, Thiobacillus ferrooxidans and oxygen are mainly contained in sulfur bacteria inoculation liquid
Change sulphur Thiobacillus；
S2 opens rabbling mechanism and temperature control system, and the velocity of rotation of stirrer paddle is made to be maintained at 60~100r/min, keeps reaction
Temperature in container carries out heavy metal processing for primary sludge and is ready between 28~35 DEG C；
S3 primary sludge is reacted, and the reaction solution containing heavy metal ion is generated:
It first passes through charging interface and primary sludge to be processed is added into reaction vessel, then energy matter simple substance is added into primary sludge
The sulfur bacteria inoculation liquid of sulphur and first step production, makes primary sludge, elemental sulfur and sulfur bacteria inoculation liquid by the stirring of stirrer paddle
It is sufficiently mixed, when the moisture content of mixed primary sludge is lower than sets requirement, opens the valve of moisturizing interface position, pass through benefit
Water interface adds water into reaction vessel；Under the stirring of stirrer paddle, the Thiobacillus ferrooxidans in primary sludge and oxygen are promoted
Change contact of the sulphur Thiobacillus with oxygen, accelerates fertility, with the progress of reaction, one side Thiobacillus ferrooxidans and oxidation
Sulphur Thiobacillus directly adsorbs in metal in sludge sulfide surface by the Extracellular polymers of its secretion, by intracellular distinctive
Oxidizing ferment directed oxidation metal sulfide generates soluble sulphate；Solution acidity in another aspect reaction vessel increases, and makes
Microbiosis opportunistic pathogen in primary sludge is killed；
S4 carries out filter suction processing to reaction solution:
After primary sludge reacts a period of time in reaction vessel, air driven pump is opened, transports air driven pump first in the state of low-power
Row, under the swabbing action of air driven pump, the reaction solution produced in reaction vessel is inhaled through outlet tube road, air driven pump and inlet pipe
Enter into collecting tank, the filter screen that discharging interface position is arranged in can fall sludge contaminant filter, avoid being sucked into liquid collecting together
In slot；During filtering suction, the valve on collateral branch's pipeline is opened, sample is extracted reaction solution by sample tap, passed through detection and react
The pH value of liquid come determine reaction whether complete, when reaction solution pH value be in 2 hereinafter, i.e. it is believed that reaction complete；Then by gas
Dynamic pump is adjusted to maximum power, so that the reaction solution in reaction vessel is quickly drawn into collecting tank, separates Heavy Metals in Sludge
It removes.
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| CN107739836B (en) * | 2017-11-29 | 2023-09-05 | 洛阳理工学院 | Device and method for continuous bioleaching of red mud in non-contact manner |
| CN108298785A (en) * | 2018-04-04 | 2018-07-20 | 陈泽楠 | A kind of municipal sludge processing unit |
| CN110372164B (en) * | 2019-08-06 | 2021-09-17 | 吕梁学院 | Sediment treatment device based on river course heavy metal pollution |
| CN112080327B (en) * | 2020-09-02 | 2022-04-19 | 王力民 | Method for treating heavy metal by adding sulfur element into sludge fuel |
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Effective date of registration: 20221212 Address after: Floor 4, Xinghuo Science Park Complex Building, No. 1366, Zhongtianmen Street, High tech Zone, Tai'an City, Shandong Province, 271000 Patentee after: Tai'an Shunyuan Environmental Protection Technology Co.,Ltd. Address before: 300384 building m2, Haitai green industrial base, 6 Haitai development road, Huayuan Industrial Park, Binhai New Area, Tianjin Patentee before: E-TECH ENERGY TECHNOLOGY DEVELOPMENT Corp. |
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