CN107032572A - A kind of method for sludge treatment for improving removal efficiency of heavy metals - Google Patents
A kind of method for sludge treatment for improving removal efficiency of heavy metals Download PDFInfo
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- CN107032572A CN107032572A CN201611154181.9A CN201611154181A CN107032572A CN 107032572 A CN107032572 A CN 107032572A CN 201611154181 A CN201611154181 A CN 201611154181A CN 107032572 A CN107032572 A CN 107032572A
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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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- 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
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/20—Sludge processing
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- Health & Medical Sciences (AREA)
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- Treatment Of Sludge (AREA)
Abstract
A kind of method for sludge treatment for improving removal efficiency of heavy metals, comprises the following steps：A, heavy metal biochemical treatment；B, sludge dewatering conditioning；C, sludge dewatering are dried；Heavy metal biochemical treatment includes, it is aerated by the first blow vent into the first tank body, air-flow is flowed from the first under shed of the first drainage hood into the first drainage hood, irregular vortex and negative pressure are formed in the first drainage hood, sludge, thiobacillus thiooxidant and nutrient solution are inhaled into from the bottom of drainage hood, lifted into the first drainage hood and be sufficiently mixed, and in the presence of the air-flow by the first upper shed of the first drainage hood flow out and settle be back in the first tank body after be inhaled into again by the bottom of airflow function from the first drainage hood, lifted into the first drainage hood, so as to the iterative cycles between the first tank body and the first drainage hood, so that the heavy metal and thiobacillus thiooxidant of sludge obtain sufficient gas-solid contact effect, so that oxidation and acidification from sludge dissolution of the heavy metal by thiobacillus thiooxidant, eliminate the content of heavy metal in sludge.
Description
Technical field
The present invention relates to a kind of method for sludge treatment, a kind of Treatment of Sludge side for improving removal efficiency of heavy metals is referred in particular to
Method.
Background technology
In recent years, with wastewater treatment in China ability and the rapid growth of handling rate, bring excess sludge and largely produce
Phenomenon.Whole nation urban wastewater treatment firm sludge only has fraction to carry out sanitary landfills, land use, burning and building materials profit at present
With etc., most of processing disposal not standardized.The heavy metal contained in excess sludge is due to non-degradable, if without having
Effect processing is disposed and arbitrarily transported outward, simply fills or stacks, and persistent pollution, direct prestige are easily caused to underground water, soil etc.
Coerce Environmental security and public health.
Heavy metal in sludge is mainly including Pb, Cd, Hg, Cr, Ni, Cu, Zn etc., and its harm is not only relevant with content, also
It is closely related with existing forms.Processing mode correspondingly also has two kinds, and a kind of is to fix the heavy metal in sludge or surely
Fixed, another way is to remove heavy metal from sludge.For the former, heavy metal is still in sludge or derivatives thereof
In, but soluble or insoluble, nontoxic, stable state is changed into from readily soluble, poisonous, unsure state, i.e., by reducing heavy metal
It is innoxious that content, the activity of reduction heavy metal and the biological effectiveness of labile state reach sludge；The latter then passes through physics, change
Learn, biological method reduces the total amount of Heavy Metals in Sludge to handle sludge.
Chinese invention patent application（Application number：201510042587.7）Disclose a kind of side of Heavy Metals in Sludge processing
Method, its mainly acted on by modifying agent the protein in sludge is hydrolyzed, the fixation of amino acid deamination and ammonia, using solid
The ammonium chloride generated after fixed progressively reacts with the calcium hydroxide and powdered glucose that add, to reduce sludge heavy-metal ionization
Conjunction valency is directly reduced to simple substance.Although process above can play certain removal effect to Heavy Metals in Sludge, but when
Between also there are some shortcomings during use：1st, removal efficiency is low, and processing time is long, is unfavorable for large-scale promotion application；2、
Need to add new modifying agent, new pollutant can be increased to sludge；3rd, modifying agent cost is higher and needs to adjust soda acid
, easily there is inactivation, treating capacity less and treatment effeciency is not good in degree.
The content of the invention
The present invention provides a kind of method for sludge treatment for improving removal efficiency of heavy metals, and its main purpose is to overcome existing
Method for sludge treatment exist heavy metal treating capacity less and the not good defect for the treatment of effeciency.
In order to solve the above technical problems, the present invention is adopted the following technical scheme that：
A kind of method for sludge treatment for improving removal efficiency of heavy metals, comprises the following steps：A, heavy metal biochemical treatment；B, sludge
Dehydrating and conditioning；C, sludge dewatering are dried；
The heavy metal biochemical treatment includes, and pending sludge input one is contained with to the of the nutrient solution of oxidation-containing sulfur bacillus
In one tank body, wherein first tank base is provided with the first blow vent, and inside is inserted with the first drainage hood, passes through the first blow vent
It is aerated into the first tank body, air-flow is flowed from the first under shed of the first drainage hood into the first drainage hood, in the first drainage hood
Interior to form irregular vortex and negative pressure, sludge, thiobacillus thiooxidant and nutrient solution be inhaled into from the bottom of drainage hood, is lifted to the
It is sufficiently mixed in one drainage hood, and is flowed out and settled by the first upper shed of the first drainage hood in the presence of air-flow and be back to
In one tank body, sludge, thiobacillus thiooxidant and nutrient solution in the first tank body are back to again by airflow function from the first drainage hood
Bottom be inhaled into, lifted into the first drainage hood so that the iterative cycles between the first tank body and the first drainage hood so that dirty
The heavy metal and thiobacillus thiooxidant of mud obtain sufficient gas-solid contact effect so that oxidation and acid of the heavy metal by thiobacillus thiooxidant
Change acts on the dissolution from sludge, eliminates the content of heavy metal in sludge.
Further, in the step b, the sludge dewatering conditioning includes, and successively sequentially adds the mistake of three kinds of conditioning material
Journey, the conditioning material of addition is winged for thermal power plant ash for the first time, and the conditioning material of second of addition is ferric chloride solution or cation
Property polyelectrolyte, the conditioning material that last time is added is polymethacrylates system both sexes co-polymer, and the sludge dewatering is adjusted
Reason also include, in use, when sludge raw material and three kinds conditioning material be fully immersed in the second tank body, by pressurization, improve this second
The pressure of tank interior, after the ventilation of the second tank body internal cause causes air pressure to increase, can increase Interstitial Water and three kinds of conditioning material pair
The infiltration of sludge internal void, strengthens three kinds of conditioning material and the contact frequency of sludge, the effect of its opsonic reaction is improved, when second
Pressure is increased to after 700kPa in tank body, and second pressure sensory package is detected after the pressure peak threshold value, touch stop to
Ventilated in second tank body, and start the second relief valve simultaneously, above-mentioned second relief valve controls the exhaust of the second tank body, by the second tank body
Internal pressure is reduced to atmospheric pressure by 700kPa, and the top of second tank body produces substantial amounts of microbubble because of exhaust,
Gas in gap water can disengage and take the product after opsonic reaction out of sludge hole, because the hole of sludge is too small, decompression
When the speed disengaged of gas commonly greater than the speed that gas is discharged from hole, therefore cause the increase of sludge pore interior pressure,
When sludge pore interior pressure is more than the pressure that mud granule wall can bear, mud granule will be caused to implode or fry
Split, making the exposed amount of polyelectrolyte and organic matter in sludge increases, the gas-solid contact for being greatly enhanced it with three kinds of conditioning material is imitated
Really, strengthen its physical and chemical reaction, so as to reduce the yield stress and outward appearance viscosity of sludge, be favorably improved sludge dewatering
Effect, when the pressure in the first tank body returns to general atmosphere pressure, it is minimum that first pressure sensory package detects the pressure
After point threshold value, touch and ventilated again into the first tank body, and simultaneously close off the first relief valve, again by the first tank interior pressure
Lifted and be depressurized to atmospheric pressure after 700kPa again, constantly the circulation of completion supercharging and decompression, until sludge completes overall take off
Water is nursed one's health.
Further, the sludge dewatering conditioning also includes, and sludge raw material and three kinds of conditioning material are respectively by second charging aperture
Enter with the second dog-house in the second tank body, and the forced air produced by Blast mechanism is produced by the bottom of the second tank body
Bubble, and injected by the second under shed of the second drainage hood in the second drainage channel, and drawn in the presence of air-flow by second
Second upper shed of stream cover, which is flowed out and settled, to be back in the second tank body, the sludge raw material being back in the second cell body and three kinds of tune
Reason material is inhaled into from the second under shed of the second drainage hood by airflow function, lifted into the second drainage hood again, so that the
Iterative cycles between two tank bodies and the second drainage hood so that sludge raw material and three kinds of conditioning material obtain sufficient gas-solid contact effect
Really, so as to reduce the yield stress and outward appearance viscosity of sludge, it is favorably improved sludge dewatering effect.
Further, the sludge dewatering is dried and included, and when in use, water-containing sludge mixing liquid is drawn into upper tank body
It is interior, mud inlet is closed afterwards, starts pressue device and vacuum extractor, increases the pressure in upper tank body by pressue device
By force, by vacuum tank so that the pressure in lower tank is reduced to vacuum state, form larger between such upper tank body and lower tank
Pressure differential, the water in water-containing sludge mixing liquid in upper tank body can run through filter layer, and sludge is then stayed in
The top of filter layer, and due to pressure differential can be formed between upper tank body and lower tank, it is ensured that separation of solid and liquid is quickly carried out, when
After separation of solid and liquid is finished, start microwave launcher release microwave, microwave is acted on and is heated with the hydrone in sludge, makes
Obtaining the moisture contained by sludge can be spread and evaporate into air, reach effect of dry sludge, and the sludge dewatering is dried and also wrapped
Include, realized and connected by the stomata in body refuse after the moisture removal in body refuse is finished, between upper tank body and lower tank, upper tank
The pressure of body is reduced rapidly, and may determine that sludge is processed by pressure monitoring device finishes, by the way that lower tank is dismantled, and will
Body refuse is cleaned out, and body refuse can be used in building filler or compound fertilizer etc. field and be recycled.
Further, the sludge dewatering is dried and also included, and the moisture got off is permeated from filter layer mainly by first
Discharge outlet drains into sewage plash, and the vapor in lower tank can enter vacuum tank and from the second discharge outlet by connecting tube
In drain into wastewater influent pond, so as to ensure that moisture can be discharged fully.
Further, the sludge dewatering is dried and also included, and causes microwave is heated in microwave to fill using metallic shield technology
Put interior repeatable reflection, it is to avoid the microwave produced in drying process leaks, and then sludge can be made to be heated properly drying, improve dirty
The drying effect of mud.
Further, further, the sludge dewatering is dried and also included, in microwave heating process is carried out, vacuum tank
It can simultaneously act on, cause lower tank to be internally formed a negative pressure, so as to produce an air-flow, the water for taking away heating process generation steams
Vapour, then drain into vacuum tank and from the second discharge outlet wastewater influent pond after the mesh of metallic shield net.
Further, in the step a, the heavy metal biochemical treatment bag also includes, when the ventilation of the first tank body internal cause is led
Cause after air pressure increase, can increase the infiltration of Interstitial Water and thiobacillus thiooxidant to sludge internal void, oxidation reinforced Thiobacillus with
The contact frequency of sludge, improves its ability for absorbing heavy metal in sludge, after pressure increases to 700kPa in the first tank body, the
One pressure sensor module is detected after the pressure peak threshold value, is touched and is stopped ventilating into the first tank body, and starts the simultaneously
One relief valve, above-mentioned first relief valve controls the exhaust of the first tank body, and the pressure of the first tank interior is reduced to greatly by 700kPa
Air pressure, the gas that the top of first tank body is produced because of exhaust in substantial amounts of microbubble, Interstitial Water can disengage and by with much money
Category and reacted product take sludge hole out of, and because the hole of sludge is too small, the speed that gas disengages during decompression is often big
The speed discharged in gas from hole, therefore the increase of sludge pore interior pressure is caused, when sludge pore interior pressure is more than
During the pressure that mud granule wall can bear, mud granule will be caused to implode or burst, make the sudden and violent of heavy metal in sludge
The increase of dew amount, is greatly enhanced the gas-solid contact effect of heavy metal and thiobacillus thiooxidant, strengthens its biochemical reaction, be greatly enhanced
The removal effect of Heavy Metals in Sludge, when the pressure in the first tank body returns to general atmosphere pressure, first pressure sensing
Component detection is ventilated into the first tank body to after the pressure minimum point threshold value, touching again, and simultaneously closes off the first relief valve, then
It is secondary to be depressurized to atmospheric pressure again after first tank interior boost in pressure to 700kPa, the circulation of supercharging and decompression is constantly completed,
Until sludge completes the removal of heavy metal.
Compared to the prior art, the beneficial effect that the present invention is produced is:
1st, present invention process is simple, practical, is passed through by air-flow by the bottom of the first tank body, and air-flow is by the first drainage hood
First under shed is flowed into the first drainage hood, and irregular vortex and negative pressure, sludge, sulfur oxide are formed in the first drainage hood
Bacillus and nutrient solution be inhaled into from the bottom of drainage hood, is lifted into the first drainage hood and is sufficiently mixed, and in the presence of air-flow
Flowed out and settled by the first upper shed of the first drainage hood and be back in the first tank body, be back to sludge, oxygen in the first tank body
Change Thiobacillus and nutrient solution is inhaled into by the bottom of airflow function from the first drainage hood, lifted into the first drainage hood again, from
And between the first tank body and the first drainage hood iterative cycles so that the heavy metal and thiobacillus thiooxidant of sludge obtain sufficient gas
Affixed tactile effect so that heavy metal is eliminated a huge sum of money in sludge by oxidation and the acidification dissolution from sludge of thiobacillus thiooxidant
The content of category.
2nd, in the present invention, bubble is produced by the bottom of the second tank body by forced air, and by the second drainage hood
Second under shed is injected in the second drainage channel, and is flowed out and sunk by the second upper shed of the second drainage hood in the presence of air-flow
Drop back to and flow in the second tank body, the sludge raw material being back in the second cell body and three kinds of conditioning material are again by airflow function from second
Second under shed of drainage hood is inhaled into, lifted into the second drainage hood, so that anti-between the second tank body and the second drainage hood
Multiple circulation so that sludge raw material and three kinds of conditioning material obtain sufficient gas-solid contact effect, should so as to reduce subduing for sludge
Power and outward appearance viscosity, are favorably improved sludge dewatering effect.
3rd, in the present invention, the conditioning material of addition not only includes winged this physics conditioning material of thermal power plant ash, in addition to
Ferric chloride solution and polymethacrylates system both sexes co-polymer both chemical conditioning material.Addition thermal power plant ash flies to help
Filter, when coordinating the high molecular polymer multiple conditioning of progress, can reduce the chemical feeding quantity of high molecular polymer, and lift the dehydration of sludge
Efficiency, increases the solid content of sludge cake.Additionally by two kinds of chemical conditioning material of setting, and using between two kinds of chemical conditioning material
Reciprocation, cause misfit form, reach more preferable flocculating effect, the adhesion between increase mud granule, formed it is bigger and
Stronger glue plumage, reduces polyelectrolyte and residues in solution, while improving the dehydration property of sludge.
Brief description of the drawings
Fig. 1 is the structural representation of sludge treatment device described in embodiment.
Fig. 2 is the enlarged diagram at A in Fig. 1.
Embodiment
Illustrate the embodiment of the present invention with reference to the accompanying drawings.
Referring to Figures 1 and 2.A kind of sludge treatment device, including the sludge heavy-metal that sludge 9 is successively passed through successively are biochemical
Handle tank body 1, sludge dewatering conditioning tank body 2 and one sludge dewatering and dry tank body 3.
Referring to Figures 1 and 2.The sludge heavy-metal biochemical treatment tank body 1 including one first tank body 10, one be arranged at this
One is provided with the first drainage hood 11 and a Blast mechanism 4 inside one tank body 10, first tank body 10 for dispensing to contain
The first charging aperture 101, one of the sludge raw material of heavy metal is used for the first dog-house 102 for delivering the nutrient solution of oxidation-containing sulfur bacillus
And first blow vent 103 being connected with Blast mechanism 4, first blow vent 103 is located at first tank body 10
Bottom, first drainage hood 11 includes opening under first of one first upper shed, one directly over first blow vent 103
Mouthful and one as formed by the first under shed extends to the first upper shed the first drainage channel.The He of first charging aperture 101
First dog-house 102 is respectively arranged at the both sides of the upper end of the first tank body 10, and first tank body 10 is a Heat Conduction Material tank body,
First tank body 10 is additionally provided with a heating part, and the heating part is one around the snake for being arranged at the lateral wall of the first tank body 10
Shape pipeline 108, the snake pipe 108 is connected with a thermostat for being contained with heating fluid, the heavy metal biochemical treatment
Tank body 1 also includes the first pressure sensory package 17 and one and the first pressure sensing group for being arranged at the top of the first tank body 10
One first relief valve 18 that part 17 is electrically connected, first relief valve 18 is used to control the internal liquid level upper air of the first tank body 10
Discharge and closing.
Referring to Figures 1 and 2.Sludge dewatering conditioning tank body 2 include one second tank body 20 and one be arranged at this second
One is provided with the second drainage hood 21 inside tank body 20, second tank body 20 is used for by the second charging aperture of sludge raw material
22nd, one is used to deliver the second dog-house 23 and second blow vent 24 also with Blast mechanism 4 being connected that conditioning is expected, described
Second blow vent 24 is located at the bottom of second tank body 20, and second drainage hood 21 is located at including one second upper shed, one
The second under shed and one directly over second blow vent 24 is as formed by the second under shed extends to the second upper shed
Second drainage channel, the second charging aperture 22 is communicated in first blow vent 103.The sludge dewatering conditioning tank body 2 is also
Including the second pressure sensory package 27 and one and the electricity of second pressure sensory package 27 for being arranged at the top of the second tank body 20
One second relief valve 28 of connection, second relief valve 28 is used for the discharge for controlling the internal liquid level upper air of the second tank body 20
With closing.A plurality of spaced apart conduction holes 210 are provided with second drainage hood 21, the top of conduction hole 210 is set
It is equipped with the drainage cap 211 protruded outwardly.Three kinds that conditioning material includes successively sequentially adding are delivered into second dog-house 23
Conditioning material, the conditioning material of addition is that thermal power plant ash flies for the first time, and the conditioning material of second of addition is ferric chloride solution or sun
Ionic polyelectrolyte, the conditioning material that last time is added is polymethacrylates system both sexes co-polymer.
Referring to Figures 1 and 2.Upper tank body 30 and upper end open of the tank body 3 including lower ending opening are dried in the sludge dewatering
Lower tank 31, the lower end and the upper end of lower tank 31 of upper tank body 30 are removably joined together, be connected with upper tank body 30 with
The pressue device 32 of the inner chamber connection of upper tank body 30, is additionally provided with upper tank body 30 sludge solutions are sent into upper tank body 30
Mud inlet 33, being provided with the lower tank 31 on the filter layer 34 sludge solutions are carried out with grain slag separation, lower tank 31 has the
One pressure modulating opening 310, the first pressure modulating opening 310 is arranged on the lower section of filter layer 34, in addition to vacuum tank 35, and vacuum tank 35 is provided with the
Two pressure modulating openings 350, the first pressure modulating opening 310 is connected with the second pressure modulating opening 350 by connecting tube, is connected with and is vacuumized on vacuum tank 35
Device 36, is provided with the first discharge outlet 312 on lower tank 31, and the first discharge outlet 312 is connected to sewage by the first drainpipe and accumulated
Pond 37, the first discharge outlet 312 is arranged on the lower section of the first pressure modulating opening 310, and the second discharge outlet 352 is provided with vacuum tank 35,
Second discharge outlet 352 is arranged on the lower section of the second pressure modulating opening 350, and the second discharge outlet 352 is communicated to sewage by the second drainpipe
Plash 37, the lower tank 31 is additionally provided with a microwave heating equipment 38 and the 3rd pressure modulating opening 311 in the top of filter layer 34,
The microwave heating equipment 38 includes a plurality of microwave launchers 380 and is coated on the outside of microwave launcher 380
Metallic shield ring 381, the outside of metallic shield ring 381 is installed on the internal face of lower tank 31, and the lower tank 31 is the 3rd
The metallic shield net 382 for coating whole 3rd pressure modulating opening 311 is provided with the position of pressure modulating opening 311, the vacuum tank 35 is provided with
4th pressure modulating opening 351, the 3rd pressure modulating opening 311 is connected with the 4th pressure modulating opening 351 by connecting tube.Under the upper tank body 30
End is connected with upper flange, and the upper end of the lower tank 31 is connected with lower flange, and upper flange is detachable by connector with lower flange
Ground is linked together, and silicone gasket is provided between upper flange and lower flange.The inwall of the lower tank 31 is provided with circumferential support
Platform, the filter layer 34 includes sieve tray 340 and the filter screen 341 being arranged on sieve tray 340, and sieve tray 340 is erected at ring-type
In supporting table.A pressure monitoring device 305 to monitor the chamber pressure of upper tank body 30, institute are additionally provided with the upper tank body 30
Stating pressure monitoring device 305 is included to show the first pressure table of malleation and second pressure table to show negative pressure.It is described
The mesh of metallic shield net 382 is smaller than the microwave wavelength that the default microwave launcher 380 is produced.
Referring to Figures 1 and 2.The Blast mechanism 4 is provided with a triple valve, and the other two-way of the triple valve is connected to institute
State on the first blow vent 103 and the second blow vent 24.
Referring to Figures 1 and 2.The course of work of the present invention is a kind of method for sludge treatment.
A kind of processing method of sludge, comprises the following steps：A, heavy metal biochemical treatment；B, sludge dewatering conditioning；C, dirt
Mud is dehydrated.
Wherein, the heavy metal biochemical treatment includes, and pending sludge input one is contained with into oxidation-containing sulfur bacillus
In first tank body 10 of nutrient solution, wherein the bottom of the first tank body 10 is provided with the first blow vent 103, and inside is inserted with the first drainage
Cover 11, is aerated by the first blow vent 103 into the first tank body 10, and air-flow is from the first under shed of the first drainage hood 11 to first
Flowed in drainage hood 11, irregular vortex and negative pressure, sludge, thiobacillus thiooxidant and nutrient solution are formed in the first drainage hood 11
It is inhaled into from the bottom of drainage hood, is lifted into the first drainage hood 11 and be sufficiently mixed, and by the first drainage in the presence of air-flow
First upper shed of cover 11, which is flowed out and settled, to be back in the first tank body 10, is back to sludge, sulfur oxide in the first tank body 10
Bacillus and nutrient solution are inhaled into by the bottom of airflow function from the first drainage hood 11, lifted into the first drainage hood 11 again, from
And between the first tank body 10 and the first drainage hood 11 iterative cycles so that the heavy metal and thiobacillus thiooxidant of sludge obtain abundant
Gas-solid contact effect so that heavy metal by thiobacillus thiooxidant oxidation and the acidification dissolution from sludge, eliminate sludge in
The content of heavy metal.In this step, by setting the relief valve 18 of first pressure sensory package 17 and first, and coordinate air blower
The ventilation effect of structure 4, can constitute a pressures cycle processing system, after the ventilation of the internal cause of the first tank body 10 causes air pressure to increase,
The infiltration of Interstitial Water and thiobacillus thiooxidant to sludge internal void, contact frequency of the oxidation reinforced Thiobacillus with sludge can be increased
Rate, improves its ability for absorbing heavy metal in sludge, after pressure increases to 700kPa in the first tank body 10, first pressure sensing
Component 17 is detected after the pressure peak threshold value, is touched Blast mechanism 4 and is stopped ventilating into the first tank body 10, and starts simultaneously
First relief valve 18, above-mentioned first relief valve 18 controls the first tank body 10 to be vented, by the pressure inside the first tank body 10 by
700kPa is reduced to atmospheric pressure, and the top of first tank body 10 produces the gas in substantial amounts of microbubble, Interstitial Water because of exhaust
Cognition is disengaged and takes heavy metal and reacted product out of sludge hole.Because the hole of sludge is too small, gas during decompression
The speed disengaged causes the increase of sludge pore interior pressure commonly greater than the speed that gas is discharged from hole.Work as sludge
When pore interior pressure is more than the pressure that mud granule wall can bear, mud granule will be caused to implode or burst, made
The exposed amount increase of heavy metal, is greatly enhanced the gas-solid contact effect of heavy metal and thiobacillus thiooxidant in sludge, strengthens its life
Change reaction, the removal effect of Heavy Metals in Sludge is drastically increased, when the pressure in the first tank body 10 returns to general atmosphere
During pressure, first pressure sensory package 17 is detected after the pressure minimum point threshold value, touches Blast mechanism 4 again to the first tank body
Ventilated in 10, and simultaneously close off the first relief valve 18, will again dropped after the internal pressure of the first tank body 10 lifting to 700kPa again
Atmospheric pressure is depressed into, the circulation of supercharging and decompression is constantly completed, until sludge completes the removal of heavy metal.
Wherein, the sludge dewatering conditioning includes, and successively sequentially adds the process of three kinds of conditioning material, adds for the first time
Conditioning material flies for thermal power plant ash, and the second conditioning material added is ferric chloride solution or cationic polyelectrolytes, finally
The conditioning material once added is polymethacrylates system both sexes co-polymer.In this step, when sludge raw material and three kinds of tune
Reason material is fully immersed in the second tank body 20, and the Blast mechanism 4 improves the pressure inside second tank body 20 by pressurization, when
The ventilation of the internal cause of second tank body 20 causes after air pressure increase, can increase Interstitial Water and three kinds of conditioning material ooze to sludge internal void
Thoroughly, strengthen three kinds of conditioning material and the contact frequency of sludge, improve the effect of its opsonic reaction, when pressure increases in the second tank body 20
To after 700kPa, second pressure sensory package 27 is detected after the pressure peak threshold value, is touched Blast mechanism 4 and is stopped to second
Ventilated in tank body 20, and start the second relief valve 28 simultaneously, above-mentioned second relief valve 28 controls the second tank body 20 to be vented, by second
Pressure inside tank body 20 is reduced to atmospheric pressure by 700kPa, and the top of second tank body 20 produces substantial amounts of micro- because of exhaust
Gas in bubble, Interstitial Water can disengage and take the product after opsonic reaction out of sludge hole.Due to the hole mistake of sludge
Small, the speed that gas disengages during decompression causes sludge pore interior pressure commonly greater than the speed that gas is discharged from hole
Power increase.When sludge pore interior pressure is more than the pressure that mud granule wall can bear, mud granule will be caused inside
Rupture or burst, making the exposed amount of polyelectrolyte and organic matter in sludge increases, be greatly enhanced its gas with three kinds of conditioning material
Affixed tactile effect, strengthens its physical and chemical reaction, so as to reduce the yield stress and outward appearance viscosity of sludge, is favorably improved
Sludge dewatering effect, when the pressure in the first tank body 10 returns to general atmosphere pressure, first pressure sensory package 17 is detected
To after the pressure minimum point threshold value, touch Blast mechanism 4 and ventilated again into the first tank body 10, and simultaneously close off the first relief valve
18, atmospheric pressure will be depressurized to again after the internal pressure of the first tank body 10 lifting to 700kPa, constantly complete supercharging and depressurize again
Circulation, until sludge completes overall dehydrating and conditioning.
More specifically, during sludge dewatering conditioning, sludge raw material and three kinds of conditioning material are respectively by the second charging
The dog-house 23 of mouth 22 and second enters in the second tank body 20, and the forced air produced by Blast mechanism 4 is by the second tank body
20 bottom produces bubble, and is injected by the second under shed of the second drainage hood 21 in the second drainage channel, and in air-flow
Flowed out and settled by the second upper shed of the second drainage hood 21 under effect and be back in the second tank body 20, is back in the second cell body
Sludge raw material and three kinds of conditioning material be inhaled into, lifted to the by the second under shed of airflow function from the second drainage hood 21 again
In two drainage hoods 21, so that the iterative cycles between the second tank body 20 and the second drainage hood 21 so that sludge raw material and three kinds of tune
Reason material obtains sufficient gas-solid contact effect, so as to reduce the yield stress and outward appearance viscosity of sludge, is favorably improved sludge
Dehydrating effect.
Wherein, the sludge dewatering is dried and included, and when in use, water-containing sludge mixing liquid is drawn into upper tank body 30,
Mud inlet 33 is closed afterwards, starts pressue device 32 and vacuum extractor 36, is made by pressue device 32 in upper tank body 30
Pressure strengthens, and causes the pressure in lower tank 31 to be reduced to vacuum state, such upper tank body 30 and lower tank by vacuum tank 35
Larger pressure differential is formed between 31, the water in the water-containing sludge mixing liquid in upper tank body 30 can run through filtering
Layer 34, and sludge then stays in the top of filter layer 34, and due to pressure differential can be formed between upper tank body 30 and lower tank 31,
Ensure quickly to carry out separation of solid and liquid, after separation of solid and liquid is finished, start the release microwave of microwave launcher 380, microwave and dirt
Hydrone in mud acts on and is heated so that the moisture contained by sludge can spread and evaporate into air, reaches dry sludge
Effect.After the moisture removal in body refuse is finished, realized between upper tank body 30 and lower tank 31 by the stomata in body refuse
Connection, the pressure of upper tank body 30 is reduced rapidly, and may determine that sludge is processed by pressure monitoring device 305 finishes, by inciting somebody to action
Lower tank 31 is dismantled, and body refuse is cleaned out, and body refuse can be used in building filler or compound fertilizer etc. field and carry out reclaiming profit
With.In this step, the moisture got off is permeated from filter layer 34 sewage plash is mainly drained into by the first discharge outlet 312
37, and the vapor in lower tank 31 can be entered vacuum tank 35 by connecting tube and drain into sewage from the second discharge outlet 352
Intake pool, so as to ensure that moisture can be discharged fully.
Meanwhile, cause microwave to repeat reflection in microwave heating equipment 38 using metallic shield technology, it is to avoid dried
The microwave produced in journey is leaked, and then sludge can be made to be heated properly drying, improves the drying effect of sludge.Add carrying out microwave
In thermal process, vacuum tank 35 can be acted on simultaneously, cause lower tank 31 to be internally formed a negative pressure, so as to produce an air-flow, be taken away
The water vapour that heating process is produced, then enter after the mesh of metallic shield net 382 vacuum tank 35 and from the second discharge outlet 352
In drain into wastewater influent pond.
Compared to the prior art, the beneficial effect that the present invention is produced is:
1st, the present invention is simple in construction, practical, can be by air-flow by first by setting a heavy metal biochemical treatment tank body
The bottom of tank body 10 is passed through, and air-flow is flowed from the first under shed of the first drainage hood 11 into the first drainage hood 11, is drawn first
Irregular vortex and negative pressure are formed in stream cover 11, sludge, thiobacillus thiooxidant and nutrient solution are inhaled into from the bottom of drainage hood, carried
It is raised in the first drainage hood 11 and is sufficiently mixed, and is flowed out and sunk by the first upper shed of the first drainage hood 11 in the presence of air-flow
Drop back to and flow in the first tank body 10, sludge, thiobacillus thiooxidant and the nutrient solution being back in the first tank body 10 are made by air-flow again
With being inhaled into, being lifted into the first drainage hood 11 from the bottom of the first drainage hood 11, so that in the first tank body 10 and the first drainage
Iterative cycles between cover 11 so that the heavy metal and thiobacillus thiooxidant of sludge obtain sufficient gas-solid contact effect a so that huge sum of money
Belong to oxidation and the acidification dissolution from sludge by thiobacillus thiooxidant, eliminate the content of heavy metal in sludge.
2nd, in the present invention, by setting a sludge dewatering to nurse one's health tank body 2, after conditioning material is added, Blast mechanism 4 is passed through
The forced air of generation produces bubble by the bottom of the second tank body 20, and by the second under shed injection the of the second drainage hood 21
In two drainage channels, and flowed out and settled by the second upper shed of the second drainage hood 21 in the presence of air-flow and be back to the second tank
The sludge raw material being back in body 20 in the second cell body and three kinds of conditioning material are again by airflow function from the of the second drainage hood 21
Two under sheds are inhaled into, lifted into the second drainage hood 21, so as to be followed repeatedly between the second tank body 20 and the second drainage hood 21
Ring so that sludge raw material and three kinds of conditioning material obtain sufficient gas-solid contact effects, so as to reduce the yield stress of sludge with
Outward appearance viscosity, is favorably improved sludge dewatering effect.
3rd, in the present invention, the conditioning material of addition not only includes winged this physics conditioning material of thermal power plant ash, in addition to
Ferric chloride solution and polymethacrylates system both sexes co-polymer both chemical conditioning material.Addition thermal power plant ash flies to help
Filter, when coordinating the high molecular polymer multiple conditioning of progress, can reduce the chemical feeding quantity of high molecular polymer, and lift the dehydration of sludge
Efficiency, increases the solid content of sludge cake.Additionally by two kinds of chemical conditioning material of setting, and using between two kinds of chemical conditioning material
Reciprocation, cause misfit form, reach more preferable flocculating effect, the adhesion between increase mud granule, formed it is bigger and
Stronger glue plumage, reduces polyelectrolyte and residues in solution, while improving the dehydration property of sludge.
4th, in the present invention, by setting a sludge dewatering to dry tank body 3, when in use by sewage solution from mud inlet 33
In be transported in upper tank body 30, mud inlet 33 is closed afterwards, starts pressue device 32 and vacuum extractor 36, passes through the dress that pressurizes
Pressure enhancing when putting 32 in upper tank body 30, causes the pressure in lower tank 31 to be reduced to vacuum state, such as by vacuum tank 35
Larger pressure differential is formed between this upper tank body 30 and lower tank 31, the moisture in the sewage solution in upper tank body 30 can
Filter layer 34 is run through, and body refuse then stays in the top of filter layer 34, when going back residual moisture in body refuse, due to the water of moisture
Envelope is acted on, and pressure differential can be formed between upper tank body 30 and lower tank 31, it is ensured that quick to carry out grain slag separation, when the water in body refuse
Realized and connected by the stomata in body refuse after point removing is finished, between upper tank body 30 and lower tank 31, the pressure of upper tank body 30
Rapid reduction, may determine that sludge is processed by pressure monitoring device 305 and finishes, by the way that lower tank 31 is dismantled, and by mud
Slag is cleaned out, and body refuse can be used in building filler or compound fertilizer etc. field and be recycled.In the present invention, from filtering
The moisture got off is permeated in layer 34 sewage plash 37 is mainly drained into by the first discharge outlet 312, and the water in lower tank 31 steams
Gas can be entered vacuum tank 35 by connecting tube and drain into wastewater influent pond from the second discharge outlet 352, so as to ensure that moisture
Can fully it discharge.
5th, in the present invention, by setting microwave heating equipment 38 in lower tank 31, and microwave heating equipment 38 can
With microwave at release so that the hydrone in sludge is interacted and is heated with the microwave, so that contained by sludge
Moisture can spread and volatilize, reach the purpose of dry sludge.
6th, in the present invention, the 3rd near the 4th pressure modulating opening 351 and microwave heating equipment 38 on vacuum tank 35 is passed through
Pumping between pressure modulating opening 311 coordinates, and causes microwave heating equipment 38 to be internally formed a negative pressure, and then produce an air-flow, this gas
The top air inlet of tank body 31 is flowed down, and passes through vacuum tank 35, the water vapour of microwave heating process generation is taken away, vapor can lead to
Cross connecting tube to be delivered in vacuum tank 35, and aqueous water is condensed into vacuum tank 35, and sewage is delivered to by the second drainpipe
In plash 37, it so ensure that the moisture in lower tank 31 is more sufficiently emitted into sewage plash 37.
7th, in the present invention, by setting metallic shield ring 381 and metallic shield net 382, microwave can be caused in microwave
Reflection is repeated in heater 38, it is to avoid the microwave produced in drying process leaks.Sludge can also be enable uniform simultaneously
Heating, drying, further improves the drying effect of sludge.
8th, in the present invention, by setting the relief valve 18 of first pressure sensory package 17 and first, and air blower is coordinated
The ventilation effect of structure 4, can constitute a pressures cycle processing system, after the ventilation of the internal cause of the first tank body 10 causes air pressure to increase,
The infiltration of Interstitial Water and thiobacillus thiooxidant to sludge internal void, contact frequency of the oxidation reinforced Thiobacillus with sludge can be increased
Rate, improves its ability for absorbing heavy metal in sludge, after pressure increases to 700kPa in the first tank body 10, first pressure sensing
Component 17 is detected after the pressure peak threshold value, is touched Blast mechanism 4 and is stopped ventilating into the first tank body 10, and starts simultaneously
First relief valve 18, above-mentioned first relief valve 18 controls the first tank body 10 to be vented, by the pressure inside the first tank body 10 by
700kPa is reduced to atmospheric pressure, and the top of first tank body 10 produces the gas in substantial amounts of microbubble, Interstitial Water because of exhaust
Cognition is disengaged and takes heavy metal and reacted product out of sludge hole.Because the hole of sludge is too small, gas during decompression
The speed disengaged causes the increase of sludge pore interior pressure commonly greater than the speed that gas is discharged from hole.Work as sludge
When pore interior pressure is more than the pressure that mud granule wall can bear, mud granule will be caused to implode or burst, made
The exposed amount increase of heavy metal, is greatly enhanced the gas-solid contact effect of heavy metal and thiobacillus thiooxidant in sludge, strengthens its life
Change reaction, the removal effect of Heavy Metals in Sludge is drastically increased, when the pressure in the first tank body 10 returns to general atmosphere
During pressure, first pressure sensory package 17 is detected after the pressure minimum point threshold value, touches Blast mechanism 4 again to the first tank body
Ventilated in 10, and simultaneously close off the first relief valve 18, will again dropped after the internal pressure of the first tank body 10 lifting to 700kPa again
Atmospheric pressure is depressed into, the circulation of supercharging and decompression is constantly completed, until sludge completes the removal of heavy metal.
9th, in the present invention, by setting the relief valve 28 of second pressure sensory package 27 and second, and air blower is coordinated
The ventilation effect of structure 4, can constitute another pressures cycle processing system, when the ventilation of the internal cause of the second tank body 20 causes air pressure to increase
Afterwards, the infiltration of Interstitial Water and three kinds of conditioning material to sludge internal void can be increased, strengthen contact of three kinds of conditioning material with sludge
Frequency, improves the effect of its opsonic reaction, after pressure increases to 700kPa in the second tank body 20, second pressure sensory package 27
Detect after the pressure peak threshold value, touch Blast mechanism 4 and stop ventilating into the second tank body 20, and start second simultaneously and let out
Pressure valve 28, above-mentioned second relief valve 28 controls the second tank body 20 to be vented, and the pressure inside the second tank body 20 is reduced by 700kPa
To atmospheric pressure, the gas that the top of second tank body 20 is produced because of exhaust in substantial amounts of microbubble, Interstitial Water can disengage simultaneously
Take the product after opsonic reaction out of sludge hole.Because the hole of sludge is too small, the speed that gas disengages during decompression is often
The speed discharged more than gas from hole, therefore cause the increase of sludge pore interior pressure.When sludge pore interior pressure is big
When the pressure that mud granule wall can bear, mud granule will be caused to implode or burst, make polyelectrolyte in sludge
With the exposed amount increase of organic matter, its gas-solid contact effect with three kinds of conditioning material is greatly enhanced, strengthens its physics and chemistry
Reaction, so as to reduce the yield stress and outward appearance viscosity of sludge, is favorably improved sludge dewatering effect, when in the first tank body 10
Pressure when returning to general atmosphere pressure, first pressure sensory package 17 is detected after the pressure minimum point threshold value, touches drum
Wind mechanism 4 is ventilated into the first tank body 10 again, and simultaneously closes off the first relief valve 18, again by the internal pressure of the first tank body 10
Lifted and be depressurized to atmospheric pressure after 700kPa again, constantly the circulation of completion supercharging and decompression, until sludge completes overall take off
Water is nursed one's health.
The embodiment of the present invention is above are only, but the design concept of the present invention is not limited thereto, it is all to utilize this
Conceive the change that unsubstantiality is carried out to the present invention, the behavior for invading the scope of the present invention all should be belonged to.
Claims (8)
1. a kind of method for sludge treatment for improving removal efficiency of heavy metals, it is characterised in that comprise the following steps：A, heavy metal life
Change is handled；B, sludge dewatering conditioning；C, sludge dewatering are dried；
The heavy metal biochemical treatment includes, and pending sludge input one is contained with to the of the nutrient solution of oxidation-containing sulfur bacillus
In one tank body, wherein first tank base is provided with the first blow vent, and inside is inserted with the first drainage hood, passes through the first blow vent
It is aerated into the first tank body, air-flow is flowed from the first under shed of the first drainage hood into the first drainage hood, in the first drainage hood
Interior to form irregular vortex and negative pressure, sludge, thiobacillus thiooxidant and nutrient solution be inhaled into from the bottom of drainage hood, is lifted to the
It is sufficiently mixed in one drainage hood, and is flowed out and settled by the first upper shed of the first drainage hood in the presence of air-flow and be back to
In one tank body, sludge, thiobacillus thiooxidant and nutrient solution in the first tank body are back to again by airflow function from the first drainage hood
Bottom be inhaled into, lifted into the first drainage hood so that the iterative cycles between the first tank body and the first drainage hood so that dirty
The heavy metal and thiobacillus thiooxidant of mud obtain sufficient gas-solid contact effect so that oxidation and acid of the heavy metal by thiobacillus thiooxidant
Change acts on the dissolution from sludge, eliminates the content of heavy metal in sludge.
2. a kind of method for sludge treatment for improving removal efficiency of heavy metals as claimed in claim 1, it is characterised in that：The step
In b, the sludge dewatering conditioning includes, and successively sequentially adds the process of three kinds of conditioning material, and the conditioning material added for the first time is fire
Power power plant is grey to fly, and the conditioning material of second of addition is ferric chloride solution or cationic polyelectrolytes, is added for the last time
Conditioning material is polymethacrylates system both sexes co-polymer, and the sludge dewatering conditioning also includes, in use, when sludge raw material
It is fully immersed with three kinds of conditioning material in the second tank body, by pressurization, the pressure of second tank interior is improved, when in the second tank body
Because ventilation causes after air pressure increase, the infiltration of Interstitial Water and three kinds of conditioning material to sludge internal void can be increased, strengthen three kinds
Conditioning material and the contact frequency of sludge, improve the effect of its opsonic reaction, after pressure increases to 700kPa in the second tank body, the
Two pressure sensor modules are detected after the pressure peak threshold value, are touched and are stopped ventilating into the second tank body, and start the simultaneously
Two relief valves, above-mentioned second relief valve controls the exhaust of the second tank body, and the pressure of the second tank interior is reduced to greatly by 700kPa
Air pressure, the gas that the top of second tank body is produced because of exhaust in substantial amounts of microbubble, Interstitial Water can disengage and will nurse one's health
Reacted product takes sludge hole out of, and because the hole of sludge is too small, the speed that gas disengages during decompression is commonly greater than gas
The speed that body is discharged from hole, therefore the increase of sludge pore interior pressure is caused, when sludge pore interior pressure is more than sludge
During the pressure that particle wall can bear, mud granule will be caused to implode or burst, make in sludge polyelectrolyte and organic
The exposed amount increase of thing, is greatly enhanced its gas-solid contact effect with three kinds of conditioning material, strengthens its physical and chemical reaction, from
And the yield stress and outward appearance viscosity of sludge can be reduced, sludge dewatering effect is favorably improved, when the pressure in the first tank body is extensive
When arriving general atmosphere pressure again, first pressure sensory package is detected after the pressure minimum point threshold value, is touched again to the first tank
Ventilation, and simultaneously close off the first relief valve in vivo, will again be depressurized to after the first tank interior boost in pressure to 700kPa again
Atmospheric pressure, constantly completes the circulation of supercharging and decompression, until sludge completes overall dehydrating and conditioning.
3. a kind of method for sludge treatment for improving removal efficiency of heavy metals as claimed in claim 2, it is characterised in that：The step
In b, the sludge dewatering conditioning also includes, and sludge raw material and three kinds of conditioning material are entered by second charging aperture and the second dog-house respectively
Enter in the second tank body, and the forced air produced by Blast mechanism produces bubble by the bottom of the second tank body, and by the
Second under shed of two drainage hoods is injected in the second drainage channel, and is opened in the presence of air-flow on the second of the second drainage hood
Mouth, which flows out and settled, to be back in the second tank body, and the sludge raw material being back in the second cell body and three kinds of conditioning material are again by air-flow
Act on and be inhaled into, lifted into the second drainage hood, so as to draw in the second tank body and second from the second under shed of the second drainage hood
Iterative cycles between stream cover so that sludge raw material and three kinds of conditioning material obtain sufficient gas-solid contact effect, so as to reduce dirt
The yield stress of mud and outward appearance viscosity, are favorably improved sludge dewatering effect.
4. a kind of method for sludge treatment for improving removal efficiency of heavy metals as claimed in claim 3, it is characterised in that：The step
In c, the sludge dewatering, which is dried, to be included, and when in use, water-containing sludge mixing liquid is drawn into upper tank body, afterwards by mud inlet
Close, start pressue device and vacuum extractor, strengthen the pressure in upper tank body by pressue device, by vacuum tank so that
Pressure in lower tank is reduced to vacuum state, larger pressure differential is formed between such upper tank body and lower tank, positioned at upper tank
Water in internal water-containing sludge mixing liquid can run through filter layer, and sludge then stays in the top of filter layer, and
Due to pressure differential can be formed between upper tank body and lower tank, it is ensured that quickly carry out separation of solid and liquid, after separation of solid and liquid is finished,
Start microwave launcher release microwave, microwave acts on the hydrone in sludge and is heated so that the moisture contained by sludge
It can spread and evaporate into air, reach effect of dry sludge, the sludge dewatering, which is dried, also to be included, when the moisture in body refuse
Realized and connected by the stomata in body refuse after removing is finished, between upper tank body and lower tank, the pressure of upper tank body is reduced rapidly,
It may determine that sludge is processed by pressure monitoring device to finish, by the way that lower tank is dismantled, and body refuse cleaned out, body refuse can
To be recycled used in building filler or compound fertilizer etc. field.
5. a kind of method for sludge treatment for improving removal efficiency of heavy metals as claimed in claim 4, it is characterised in that：The step
In c, the sludge dewatering, which is dried, also to be included, and the moisture got off is permeated from filter layer and mainly drains into sewage by the first discharge outlet
Plash, and the vapor in lower tank can be entered vacuum tank by connecting tube and drain into wastewater influent from the second discharge outlet
Pond, so as to ensure that moisture can be discharged fully.
6. a kind of method for sludge treatment for improving removal efficiency of heavy metals as claimed in claim 5, it is characterised in that：The step
In c, the sludge dewatering, which is dried, also to be included, and causes microwave is repeated in microwave heating equipment anti-using metallic shield technology
Penetrate, it is to avoid the microwave produced in drying process leaks, and then sludge can be made to be heated properly drying, that improves sludge dries effect
Really.
7. a kind of method for sludge treatment for improving removal efficiency of heavy metals as claimed in claim 5, it is characterised in that：The step
In c, the sludge dewatering, which is dried, also to be included, and in microwave heating process is carried out, vacuum tank can be acted on simultaneously, cause lower tank
A negative pressure is internally formed, so as to produce an air-flow, the water vapour of heating process generation is taken away, then by the mesh of metallic shield net
Enter vacuum tank afterwards and wastewater influent pond is drained into from the second discharge outlet.
8. a kind of method for sludge treatment for improving removal efficiency of heavy metals as claimed in claim 1, it is characterised in that：The step
In a, the heavy metal biochemical treatment bag also includes, and after the ventilation of the first tank body internal cause causes air pressure to increase, can increase gap
The contact frequency of the infiltration of water and thiobacillus thiooxidant to sludge internal void, oxidation reinforced Thiobacillus and sludge, improves its intake
The ability of heavy metal in sludge, after pressure increases to 700kPa in the first tank body, first pressure sensory package detects the pressure
After power peak threshold value, touch and stop ventilating into the first tank body, and start the first relief valve, above-mentioned first relief valve control simultaneously
Make the exhaust of the first tank body, the pressure of the first tank interior be reduced to atmospheric pressure by 700kPa, the top of first tank body because
It is vented and produces substantial amounts of microbubble, the gas in Interstitial Water can disengages and take heavy metal and reacted product out of sludge
Hole, because the hole of sludge is too small, the speed that gas disengages during decompression commonly greater than the speed that gas is discharged from hole, because
This causes the increase of sludge pore interior pressure, when sludge pore interior pressure is more than the pressure that mud granule wall can bear,
Mud granule will be caused to implode or burst, making the exposed amount of heavy metal in sludge increases, be greatly enhanced heavy metal and
The gas-solid contact effect of thiobacillus thiooxidant, strengthens its biochemical reaction, drastically increases the removal effect of Heavy Metals in Sludge, when
When pressure in first tank body returns to general atmosphere pressure, first pressure sensory package detects the pressure minimum point threshold value
Afterwards, touch and ventilated again into the first tank body, and simultaneously close off the first relief valve, again arrive the first tank interior boost in pressure
Atmospheric pressure is depressurized to after 700kPa again, the circulation of supercharging and decompression is constantly completed, until sludge completes the removal of heavy metal.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105366906A (en) * | 2015-12-15 | 2016-03-02 | 晋江市世龙厨房设备有限公司 | Biochemical treatment method for heavy metal in sludge |
| CN105502862A (en) * | 2015-12-15 | 2016-04-20 | 南安市先创环保技术服务有限公司 | Sludge heavy metal biochemical treatment tank |
| CN205295112U (en) * | 2015-12-15 | 2016-06-08 | 南安市先创环保技术服务有限公司 | Efficiency of heavy metal is got rid of is improved sludge processing apparatus |
| CN205556421U (en) * | 2015-12-15 | 2016-09-07 | 南安市先创环保技术服务有限公司 | Sludge heavy metal biochemical treatment jar body |
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2016
- 2016-12-14 CN CN201611154181.9A patent/CN107032572A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105366906A (en) * | 2015-12-15 | 2016-03-02 | 晋江市世龙厨房设备有限公司 | Biochemical treatment method for heavy metal in sludge |
| CN105502862A (en) * | 2015-12-15 | 2016-04-20 | 南安市先创环保技术服务有限公司 | Sludge heavy metal biochemical treatment tank |
| CN205295112U (en) * | 2015-12-15 | 2016-06-08 | 南安市先创环保技术服务有限公司 | Efficiency of heavy metal is got rid of is improved sludge processing apparatus |
| CN205556421U (en) * | 2015-12-15 | 2016-09-07 | 南安市先创环保技术服务有限公司 | Sludge heavy metal biochemical treatment jar body |
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