CN106927862A - A kind of method that sludge of sewage treatment plant prepares insulation material - Google Patents
A kind of method that sludge of sewage treatment plant prepares insulation material Download PDFInfo
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- CN106927862A CN106927862A CN201710200268.3A CN201710200268A CN106927862A CN 106927862 A CN106927862 A CN 106927862A CN 201710200268 A CN201710200268 A CN 201710200268A CN 106927862 A CN106927862 A CN 106927862A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/10—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by using foaming agents or by using mechanical means, e.g. adding preformed foam
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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
- C02F11/04—Anaerobic treatment; Production of methane by such processes
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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
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1263—Sequencing batch reactors [SBR]
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- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
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- C04B33/00—Clay-wares
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- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/1321—Waste slurries, e.g. harbour sludge, industrial muds
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- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/16—Lean materials, e.g. grog, quartz
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- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3208—Calcium oxide or oxide-forming salts thereof, e.g. lime
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- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3427—Silicates other than clay, e.g. water glass
- C04B2235/3436—Alkaline earth metal silicates, e.g. barium silicate
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- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
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Abstract
The invention belongs to insulation material processing technique field, there is provided a kind of method that sludge of sewage treatment plant prepares insulation material, comprise the following steps：Sludge slurry preparation：Sludge that parts by weight are 40 60, the choysotile that parts by weight are 40 70, the lime stone that parts by weight are 10 20 and sandstone mixing and water adding that parts by weight are 4 12 are configured to the slurry that solids content is 30 40%, and the ball milling in ball mill；Foam formulation；Foamed slurry is prepared：Slurry and foams mix is uniform, obtain foamed slurry；It is prepared by insulation material：Gained foamed slurry is poured into mould, room temperature is taken out after foamed slurry and die edge depart from, and is dried, and sintering obtains environment protecting thermal insulating material.Sludge of the present invention is comprehensively utilized, and is turned waste into wealth, is turned bane into boon, while providing, a kind of fire protecting performance is good, insulation material with good mechanical strength and relatively low thermal conductivity factor.
Description
Technical field
The invention belongs to insulation material processing technique field, in particular it relates to one kind is prepared with sludge of sewage treatment plant protect
The method of adiabator.
Background technology
Sludge is the product after sewage disposal, is that one kind is made up of organic relic, microorganism, inorganic particle, colloid etc.
Extremely complex heterogeneous body.The key property of sludge is moisture content high（Up to more than 99%）, content of organics is high, holds
Easily degenerate smelly, and particle is thinner, and proportion is smaller, jelly liquid.It is the concentrated thing between liquid and solid, can
Transported with pump, but it is difficult to carry out separation of solid and liquid by sedimentation.
At present, both at home and abroad widely used sludge treatment technique mainly have the direct Land_use change of sludge sanitary landfills, sludge,
Sludge composting treatment, sludge incineration, sludge drying etc..Sludge sanitary landfills and the direct Land_use change of sludge easily cause environment
Pollution, causes land resource to waste.During sludge composting handling, contaminated air, easily influenceed by weather.Sludge drying is by oozing
Most of moisture in the effect removal sludge such as filter or high temperature evaporation, the sludge after desiccation can be used for the energy and burn, produces building
Material etc..Sludge incineration is, using the sludge after incinerator high temperature incineration desiccation, sludge incineration to be turned into a small amount of ashes, this side
Method can completely remove moisture in sludge and organic matter, and kill pathogen.
However, China is the limited country of a per capita resource reserve, the comprehensive utilization of sludge is turned waste into wealth, is become
Evil is profit, it has also become an important techno-economic policy in China's economic construction.
The content of the invention
For defect of the prior art, thermal insulating material is prepared it is an object of the invention to provide one kind sludge of sewage treatment plant
The method of material, comprehensively utilizes to sludge, turns waste into wealth, turns bane into boon, at the same provide a kind of fire protecting performance it is good, with good
Mechanical strength and relatively low thermal conductivity factor insulation material.
It is described to use sewage disposal according to a kind of method that insulation material is prepared with sludge of sewage treatment plant that the present invention is provided
The method that factory's sludge prepares insulation material comprises the following steps：
Step（1）：Sludge slurry preparation：It is sludge, the choysotile that parts by weight are 40-70, the weight of 70-80 by parts by weight
Amount number is the slurry of 30-40% for the sandstone mixing and water adding of 4-12 is configured to solids content for the lime stone and parts by weight of 10-20
Material, and the ball milling in ball mill；
Step（2）：Foam formulation：Foaming agent water solution is stirred using high speed agitator, it is produced a large amount of foams；
Step（3）：Foamed slurry is prepared：By step（1）The good slurry of ball milling and step（2）Gained foams mix is uniform, must steep
Foam slurry；
Step（4）：It is prepared by insulation material：Gained foamed slurry is poured into mould, room temperature treats foamed slurry and mold side
Edge takes out after departing from, and dries, and sintering obtains environment protecting thermal insulating material.
Preferably, the step（1）Sludge is pre-processed before preparing slurry, using sequencing batch active sludge.SBR
It is the abbreviation of sequencing batch active sludge, is a kind of activated sludge sewage disposal technology run by intermittent aerating mode.It
The orderly and intermittently operated being mainly characterized by operationally, the core of SBR technologies is sbr reactor pond, Chi Ji homogenizing, just
Heavy, biodegradable, two functions such as heavy in a pond, without sludge recirculation system.It is particularly suited for intermittent discharge and changes in flow rate is larger
Occasion.In most cases（Including Industrial Wastewater Treatment）, without setting regulating reservoir；SVI values are relatively low, and sludge is easy to heavy
Form sediment, generally, sludge bulking phenomenon is not produced；By the regulation to the method for operation, can enter in single aeration tank
Row denitrogenation and except phosphorus reaction；Using automatic instrument(s)s such as motor-driven valve, liquid level gauge, autotimer and programmable controllers, may
This technical process is set to realize all automations, and by central control room control；Operational management is proper, and treatment water water quality is better than continuous
Formula；Deepen Chi Shenshi, compared with the other manner of same BOD-SS loads, floor space is smaller；Anti impulsion load, treatment
Poisonous or high concentrated organic wastewater ability is strong.
Preferably, step（1）：Enter reaction tank by the sewage for pre-processing, while the digestion flowed back by sludge digestion tank
Sludge enters reaction tank, and sewage and sludge form mixed liquor in reaction tank；Mixed liquor experience in chronological order water inlet, aeration,
Precipitation, draining and standby five basic working procedures；Supernatant after bleeding stage, purification discharges sequencing batch activated dirt as water outlet
Mud method reaction tank, excess sludge is emitted into sludge concentration tank；
Step（2）：In sludge concentration tank, thickened sludge is emitted into sludge digestion tank and carries out digestion process, and supernatant is flowed back into
Row sewage disinfection treatment；
Step（3）：Thickened sludge enters sludge digestion tank, and sludge digestion occurs under conditions of anaerobism；In sludge digestion tank row
In the sludge for going out, a part of digested sludge is back to sequencing batch active sludge reaction tank, another part digested sludge discharge pond
Carry out sludge dewatering and disposal outward.
Preferably, the step（2）It is the method with gravity concentration or floatation thickening, reduces the moisture content of sludge.
Wherein, gravity concentration utilizes the natural subsidence separate mode of Action of Gravity Field, it is not necessary to external energy, is that one kind is most saved
The sludge concentration method of energy.Gravity concentration is a kind of sedimentation separation technique, and it is by forming high concentration sludge in precipitation
Layer reaches the purpose of thickened sludge, is the main body of current sludge concentration method.Single gravity concentration is dense in independent gravity
Completed in contracting pond, process is simple is effective.
Floatation thickening, floatation thickening is with gravity concentration conversely, being the week that mud granule is attached to by a large amount of micro-bubbles
Enclose, subtract short grained proportion and force to float.Floatation thickening method is easy to operate.
Preferably, the step（2）The foaming agent is alkane or fluorocarbons, and addition is solid material gross weight
The 0.8-1.1% of amount.Alkane or fluorocarbons are physical blowing agent, are Compositional type physical blowing agents, not only with foaming times
Number is high, foam stability is good, the low advantage of bleeding quantity, while certain modifying function can also be played to magnesia cement, reduces and produces
The probability of product scumming.Physical blowing agent is widely used to the production of the foaming magnesite product such as PLASTIC LAMINATED, light cellular partition board,
And in some products（Magnesite fire-proof door core etc.）With the key effect that it concerns the success or failure of the matter.
Preferably, the step（1）When preparing slurry, the dispersant of solid material gross weight 0.5-1.0% is added.
Preferably, the step（1）When preparing slurry, the foam stabilizer of solid material gross weight 1.1-1.5% is added.
Preferably, the foam stabilizer is silicones polyethers type of latex type.Silicones polyethers type of latex type can control air bubble liquid-membrane
Structural stability, make surfactant molecule in the Methodistic distribution of liquid film of bubble, assign the good elasticity of foam and from
Repair ability.Advantage：Foam stabilizing effect is substantially, easy to use.
Compared with prior art, the present invention has following beneficial effect：
（1）Insulation material prepared by the present invention with choysotile as principal crystalline phase, the spy such as it has low thermal conductivity, heat endurance good
Point；
（2）The method of the present invention is simple to operate, no waste discharge in sintering process, both cost-effective or environmental protection, is adapted to
Industrialized production；
（3）The technique that the present invention is mixed using foam with slurry causes that sample porosity is higher, bulk density is smaller, heat conduction more
It is low；
（4）The present invention is made more organic in sewage using the method for return digestion sludge to sequencing batch activated sludge reaction tank
Thing is, by anaerobic degradation, thus the more Methane Resources of generation, with good dephosphorization and denitrification effect, to lead in sludge digestion tank
The methane gas energy that the modes such as generating reclaim generation is crossed, the required electric energy of the operation of sewage and sludge treatment facilities can be met
More than 70%, thus be the sewage water treatment method of low energy consumption；
（5）It is the trade wastes such as sludge, gypsum that the present invention is raw materials used, effectively discarded object is recycled, with very
Economic implications high, and being capable of environmental protection；
（6）Obtained insulation material porosity of the invention is 87-96 %, and bulk density is 160-370 kg/m3, thermal conductivity factor is
0.02-0.05 W/ (mK), compression strength is 0.48-0.77 MPa.
Specific embodiment
With reference to specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate the present invention
Rather than limitation the scope of the present invention.
A kind of method that insulation material is prepared with sludge of sewage treatment plant that the present invention is provided, the use sewage treatment plant is dirty
The method of clay standby insulation material comprises the following steps：
Step（1）：Sludge slurry preparation：It is sludge, the choysotile that parts by weight are 40-70, the weight of 70-80 by parts by weight
Amount number is the slurry of 30-40% for the sandstone mixing and water adding of 4-12 is configured to solids content for the lime stone and parts by weight of 10-20
Material, and the ball milling in ball mill；
Step（2）：Foam formulation：Foaming agent water solution is stirred using high speed agitator, it is produced a large amount of foams；
Step（3）：Foamed slurry is prepared：By step（1）The good slurry of ball milling and step（2）Gained foams mix is uniform, must steep
Foam slurry；
Step（4）：It is prepared by insulation material：Gained foamed slurry is poured into mould, room temperature treats foamed slurry and mold side
Edge takes out after departing from, and dries, and sintering obtains environment protecting thermal insulating material.
Preferably, the step（1）Sludge is pre-processed before preparing slurry, using sequencing batch active sludge.SBR
It is the abbreviation of sequencing batch active sludge, is a kind of activated sludge sewage disposal technology run by intermittent aerating mode.It
The orderly and intermittently operated being mainly characterized by operationally, the core of SBR technologies is sbr reactor pond, Chi Ji homogenizing, just
Heavy, biodegradable, two functions such as heavy in a pond, without sludge recirculation system.It is particularly suited for intermittent discharge and changes in flow rate is larger
Occasion.In most cases（Including Industrial Wastewater Treatment）, without setting regulating reservoir；SVI values are relatively low, and sludge is easy to heavy
Form sediment, generally, sludge bulking phenomenon is not produced；By the regulation to the method for operation, can enter in single aeration tank
Row denitrogenation and except phosphorus reaction；Using automatic instrument(s)s such as motor-driven valve, liquid level gauge, autotimer and programmable controllers, may
This technical process is set to realize all automations, and by central control room control；Operational management is proper, and treatment water water quality is better than continuous
Formula；Deepen Chi Shenshi, compared with the other manner of same BOD-SS loads, floor space is smaller；Anti impulsion load, treatment
Poisonous or high concentrated organic wastewater ability is strong.
Preferably, step（1）：Enter reaction tank by the sewage for pre-processing, while the digestion flowed back by sludge digestion tank
Sludge enters reaction tank, and sewage and sludge form mixed liquor in reaction tank；Mixed liquor experience in chronological order water inlet, aeration,
Precipitation, draining and standby five basic working procedures；Supernatant after bleeding stage, purification discharges sequencing batch activated dirt as water outlet
Mud method reaction tank, excess sludge is emitted into sludge concentration tank；
Step（2）：In sludge concentration tank, thickened sludge is emitted into sludge digestion tank and carries out digestion process, and supernatant is flowed back into
Row sewage disinfection treatment；
Step（3）：Thickened sludge enters sludge digestion tank, and sludge digestion occurs under conditions of anaerobism；In sludge digestion tank row
In the sludge for going out, a part of digested sludge is back to sequencing batch active sludge reaction tank, another part digested sludge discharge pond
Carry out sludge dewatering and disposal outward.
Preferably, the step（2）It is the method with gravity concentration or floatation thickening, reduces the moisture content of sludge.
Wherein, gravity concentration utilizes the natural subsidence separate mode of Action of Gravity Field, it is not necessary to external energy, is that one kind is most saved
The sludge concentration method of energy.Gravity concentration is a kind of sedimentation separation technique, and it is by forming high concentration sludge in precipitation
Layer reaches the purpose of thickened sludge, is the main body of current sludge concentration method.Single gravity concentration is dense in independent gravity
Completed in contracting pond, process is simple is effective.
Floatation thickening, floatation thickening is with gravity concentration conversely, being the week that mud granule is attached to by a large amount of micro-bubbles
Enclose, subtract short grained proportion and force to float.Floatation thickening method is easy to operate.
Preferably, the step（2）The foaming agent is alkane or fluorocarbons, and addition is solid material gross weight
The 0.8-1.1% of amount.Alkane or fluorocarbons are physical blowing agent, are Compositional type physical blowing agents, not only with foaming times
Number is high, foam stability is good, the low advantage of bleeding quantity, while certain modifying function can also be played to magnesia cement, reduces and produces
The probability of product scumming.Physical blowing agent is widely used to the production of the foaming magnesite product such as PLASTIC LAMINATED, light cellular partition board,
And in some products（Magnesite fire-proof door core etc.）With the key effect that it concerns the success or failure of the matter.
Preferably, the step（1）When preparing slurry, the dispersant of solid material gross weight 0.5-1.0% is added.
Preferably, the step（1）When preparing slurry, the foam stabilizer of solid material gross weight 1.1-1.5% is added.
Preferably, the foam stabilizer is silicones polyethers type of latex type.Silicones polyethers type of latex type can control air bubble liquid-membrane
Structural stability, make surfactant molecule in the Methodistic distribution of liquid film of bubble, assign the good elasticity of foam and from
Repair ability.Advantage：Foam stabilizing effect is substantially, easy to use.
Compared with prior art, the present invention has following beneficial effect：
（1）Insulation material prepared by the present invention with choysotile as principal crystalline phase, the spy such as it has low thermal conductivity, heat endurance good
Point；
（2）The method of the present invention is simple to operate, no waste discharge in sintering process, both cost-effective or environmental protection, is adapted to
Industrialized production；
（3）The technique that the present invention is mixed using foam with slurry causes that sample porosity is higher, bulk density is smaller, heat conduction more
It is low；
（4）The present invention is made more organic in sewage using the method for return digestion sludge to sequencing batch activated sludge reaction tank
Thing is, by anaerobic degradation, thus the more Methane Resources of generation, with good dephosphorization and denitrification effect, to lead in sludge digestion tank
The methane gas energy that the modes such as generating reclaim generation is crossed, the required electric energy of the operation of sewage and sludge treatment facilities can be met
More than 70%, thus be the sewage water treatment method of low energy consumption；
（5）It is the trade wastes such as sludge, gypsum that the present invention is raw materials used, effectively discarded object is recycled, with very
Economic implications high, and being capable of environmental protection；
（6）Obtained insulation material porosity of the invention is 87-96 %, and bulk density is 160-370 kg/m3, thermal conductivity factor is
0.02-0.05 W/ (mK), compression strength is 0.48-0.77 MPa.
Embodiment 1
A kind of method that insulation material is prepared with sludge of sewage treatment plant that the present embodiment is provided, it is described to use sludge of sewage treatment plant
The method for preparing insulation material comprises the following steps：
Step（1）：Sludge slurry preparation：By sludge, the choysotile that parts by weight are 40, parts by weight that parts by weight are 80
Lime stone and parts by weight for 20 are that 4 sandstone mixing and water adding is configured to the slurry that solids content is 40%, and in ball mill
Ball milling；
Step（2）：Foam formulation：Foaming agent water solution is stirred using high speed agitator, it is produced a large amount of foams；
Step（3）：Foamed slurry is prepared：By step（1）The good slurry of ball milling and step（2）Gained foams mix is uniform, must steep
Foam slurry；
Step（4）：It is prepared by insulation material：Gained foamed slurry is poured into mould, room temperature treats foamed slurry and mold side
Edge takes out after departing from, and dries, and sintering obtains environment protecting thermal insulating material.
Preferably, the step（1）Sludge is pre-processed before preparing slurry, using sequencing batch active sludge.SBR
It is the abbreviation of sequencing batch active sludge, is a kind of activated sludge sewage disposal technology run by intermittent aerating mode.It
The orderly and intermittently operated being mainly characterized by operationally, the core of SBR technologies is sbr reactor pond, Chi Ji homogenizing, just
Heavy, biodegradable, two functions such as heavy in a pond, without sludge recirculation system.It is particularly suited for intermittent discharge and changes in flow rate is larger
Occasion.In most cases（Including Industrial Wastewater Treatment）, without setting regulating reservoir；SVI values are relatively low, and sludge is easy to heavy
Form sediment, generally, sludge bulking phenomenon is not produced；By the regulation to the method for operation, can enter in single aeration tank
Row denitrogenation and except phosphorus reaction；Using automatic instrument(s)s such as motor-driven valve, liquid level gauge, autotimer and programmable controllers, may
This technical process is set to realize all automations, and by central control room control；Operational management is proper, and treatment water water quality is better than continuous
Formula；Deepen Chi Shenshi, compared with the other manner of same BOD-SS loads, floor space is smaller；Anti impulsion load, treatment
Poisonous or high concentrated organic wastewater ability is strong.
Preferably, step（1）：Enter reaction tank by the sewage for pre-processing, while the digestion flowed back by sludge digestion tank
Sludge enters reaction tank, and sewage and sludge form mixed liquor in reaction tank；Mixed liquor experience in chronological order water inlet, aeration,
Precipitation, draining and standby five basic working procedures；Supernatant after bleeding stage, purification discharges sequencing batch activated dirt as water outlet
Mud method reaction tank, excess sludge is emitted into sludge concentration tank；
Step（2）：In sludge concentration tank, thickened sludge is emitted into sludge digestion tank and carries out digestion process, and supernatant is flowed back into
Row sewage disinfection treatment；
Step（3）：Thickened sludge enters sludge digestion tank, and sludge digestion occurs under conditions of anaerobism；In sludge digestion tank row
In the sludge for going out, a part of digested sludge is back to sequencing batch active sludge reaction tank, another part digested sludge discharge pond
Carry out sludge dewatering and disposal outward.
Preferably, the step（2）It is the method with gravity concentration or floatation thickening, reduces the moisture content of sludge.
Wherein, gravity concentration utilizes the natural subsidence separate mode of Action of Gravity Field, it is not necessary to external energy, is that one kind is most saved
The sludge concentration method of energy.Gravity concentration is a kind of sedimentation separation technique, and it is by forming high concentration sludge in precipitation
Layer reaches the purpose of thickened sludge, is the main body of current sludge concentration method.Single gravity concentration is dense in independent gravity
Completed in contracting pond, process is simple is effective.
Floatation thickening, floatation thickening is with gravity concentration conversely, being the week that mud granule is attached to by a large amount of micro-bubbles
Enclose, subtract short grained proportion and force to float.Floatation thickening method is easy to operate.
Preferably, the step（2）The foaming agent is alkane or fluorocarbons, and addition is solid material gross weight
The 0.8% of amount.Alkane or fluorocarbons are physical blowing agent, are Compositional type physical blowing agents, not only with coefficient of foaming
High, foam stability is good, the low advantage of bleeding quantity, while certain modifying function can also be played to magnesia cement, reduces product
The probability of scumming.Physical blowing agent is widely used to the production of the foaming magnesite product such as PLASTIC LAMINATED, light cellular partition board, and
And in some products（Magnesite fire-proof door core etc.）With the key effect that it concerns the success or failure of the matter.
Preferably, the step（1）When preparing slurry, the dispersant of solid material gross weight 1.0% is added.
Preferably, the step（1）When preparing slurry, the foam stabilizer of solid material gross weight 1.1% is added.
Preferably, the foam stabilizer is silicones polyethers type of latex type.Silicones polyethers type of latex type can control air bubble liquid-membrane
Structural stability, make surfactant molecule in the Methodistic distribution of liquid film of bubble, assign the good elasticity of foam and from
Repair ability.Advantage：Foam stabilizing effect is substantially, easy to use.
Embodiment 2
Step（1）：Sludge slurry preparation：By sludge, the choysotile that parts by weight are 70, parts by weight that parts by weight are 70
Lime stone and parts by weight for 10 are that 12 sandstone mixing and water adding is configured to the slurry that solids content is 30%, and in ball mill
Middle ball milling；
Step（2）：Foam formulation：Foaming agent water solution is stirred using high speed agitator, it is produced a large amount of foams；
Step（3）：Foamed slurry is prepared：By step（1）The good slurry of ball milling and step（2）Gained foams mix is uniform, must steep
Foam slurry；
Step（4）：It is prepared by insulation material：Gained foamed slurry is poured into mould, room temperature treats foamed slurry and mold side
Edge takes out after departing from, and dries, and sintering obtains environment protecting thermal insulating material.
Preferably, the step（1）Sludge is pre-processed before preparing slurry, using sequencing batch active sludge.SBR
It is the abbreviation of sequencing batch active sludge, is a kind of activated sludge sewage disposal technology run by intermittent aerating mode.It
The orderly and intermittently operated being mainly characterized by operationally, the core of SBR technologies is sbr reactor pond, Chi Ji homogenizing, just
Heavy, biodegradable, two functions such as heavy in a pond, without sludge recirculation system.It is particularly suited for intermittent discharge and changes in flow rate is larger
Occasion.In most cases（Including Industrial Wastewater Treatment）, without setting regulating reservoir；SVI values are relatively low, and sludge is easy to heavy
Form sediment, generally, sludge bulking phenomenon is not produced；By the regulation to the method for operation, can enter in single aeration tank
Row denitrogenation and except phosphorus reaction；Using automatic instrument(s)s such as motor-driven valve, liquid level gauge, autotimer and programmable controllers, may
This technical process is set to realize all automations, and by central control room control；Operational management is proper, and treatment water water quality is better than continuous
Formula；Deepen Chi Shenshi, compared with the other manner of same BOD-SS loads, floor space is smaller；Anti impulsion load, treatment
Poisonous or high concentrated organic wastewater ability is strong.
Preferably, step（1）：Enter reaction tank by the sewage for pre-processing, while the digestion flowed back by sludge digestion tank
Sludge enters reaction tank, and sewage and sludge form mixed liquor in reaction tank；Mixed liquor experience in chronological order water inlet, aeration,
Precipitation, draining and standby five basic working procedures；Supernatant after bleeding stage, purification discharges sequencing batch activated dirt as water outlet
Mud method reaction tank, excess sludge is emitted into sludge concentration tank；
Step（2）：In sludge concentration tank, thickened sludge is emitted into sludge digestion tank and carries out digestion process, and supernatant is flowed back into
Row sewage disinfection treatment；
Step（3）：Thickened sludge enters sludge digestion tank, and sludge digestion occurs under conditions of anaerobism；In sludge digestion tank row
In the sludge for going out, a part of digested sludge is back to sequencing batch active sludge reaction tank, another part digested sludge discharge pond
Carry out sludge dewatering and disposal outward.
Preferably, the step（2）It is the method with gravity concentration or floatation thickening, reduces the moisture content of sludge.
Wherein, gravity concentration utilizes the natural subsidence separate mode of Action of Gravity Field, it is not necessary to external energy, is that one kind is most saved
The sludge concentration method of energy.Gravity concentration is a kind of sedimentation separation technique, and it is by forming high concentration sludge in precipitation
Layer reaches the purpose of thickened sludge, is the main body of current sludge concentration method.Single gravity concentration is dense in independent gravity
Completed in contracting pond, process is simple is effective.
Floatation thickening, floatation thickening is with gravity concentration conversely, being the week that mud granule is attached to by a large amount of micro-bubbles
Enclose, subtract short grained proportion and force to float.Floatation thickening method is easy to operate.
Preferably, the step（2）The foaming agent is alkane or fluorocarbons, and addition is solid material gross weight
The 0.9% of amount.Alkane or fluorocarbons are physical blowing agent, are Compositional type physical blowing agents, not only with coefficient of foaming
High, foam stability is good, the low advantage of bleeding quantity, while certain modifying function can also be played to magnesia cement, reduces product
The probability of scumming.Physical blowing agent is widely used to the production of the foaming magnesite product such as PLASTIC LAMINATED, light cellular partition board, and
And in some products（Magnesite fire-proof door core etc.）With the key effect that it concerns the success or failure of the matter.
Preferably, the step（1）When preparing slurry, the dispersant of solid material gross weight 1.0% is added.
Preferably, the step（1）When preparing slurry, the foam stabilizer of solid material gross weight 1.1% is added.
Preferably, the foam stabilizer is silicones polyethers type of latex type.Silicones polyethers type of latex type can control air bubble liquid-membrane
Structural stability, make surfactant molecule in the Methodistic distribution of liquid film of bubble, assign the good elasticity of foam and from
Repair ability.Advantage：Foam stabilizing effect is substantially, easy to use.
Embodiment 3
Step（1）：Sludge slurry preparation：By sludge, the choysotile that parts by weight are 50, parts by weight that parts by weight are 75
Lime stone and parts by weight for 15 are that 6 sandstone mixing and water adding is configured to the slurry that solids content is 35%, and in ball mill
Ball milling；
Step（2）：Foam formulation：Foaming agent water solution is stirred using high speed agitator, it is produced a large amount of foams；
Step（3）：Foamed slurry is prepared：By step（1）The good slurry of ball milling and step（2）Gained foams mix is uniform, must steep
Foam slurry；
Step（4）：It is prepared by insulation material：Gained foamed slurry is poured into mould, room temperature treats foamed slurry and mold side
Edge takes out after departing from, and dries, and sintering obtains environment protecting thermal insulating material.
Preferably, the step（1）Sludge is pre-processed before preparing slurry, using sequencing batch active sludge.SBR
It is the abbreviation of sequencing batch active sludge, is a kind of activated sludge sewage disposal technology run by intermittent aerating mode.It
The orderly and intermittently operated being mainly characterized by operationally, the core of SBR technologies is sbr reactor pond, Chi Ji homogenizing, just
Heavy, biodegradable, two functions such as heavy in a pond, without sludge recirculation system.It is particularly suited for intermittent discharge and changes in flow rate is larger
Occasion.In most cases（Including Industrial Wastewater Treatment）, without setting regulating reservoir；SVI values are relatively low, and sludge is easy to heavy
Form sediment, generally, sludge bulking phenomenon is not produced；By the regulation to the method for operation, can enter in single aeration tank
Row denitrogenation and except phosphorus reaction；Using automatic instrument(s)s such as motor-driven valve, liquid level gauge, autotimer and programmable controllers, may
This technical process is set to realize all automations, and by central control room control；Operational management is proper, and treatment water water quality is better than continuous
Formula；Deepen Chi Shenshi, compared with the other manner of same BOD-SS loads, floor space is smaller；Anti impulsion load, treatment
Poisonous or high concentrated organic wastewater ability is strong.
Preferably, step（1）：Enter reaction tank by the sewage for pre-processing, while the digestion flowed back by sludge digestion tank
Sludge enters reaction tank, and sewage and sludge form mixed liquor in reaction tank；Mixed liquor experience in chronological order water inlet, aeration,
Precipitation, draining and standby five basic working procedures；Supernatant after bleeding stage, purification discharges sequencing batch activated dirt as water outlet
Mud method reaction tank, excess sludge is emitted into sludge concentration tank；
Step（2）：In sludge concentration tank, thickened sludge is emitted into sludge digestion tank and carries out digestion process, and supernatant is flowed back into
Row sewage disinfection treatment；
Step（3）：Thickened sludge enters sludge digestion tank, and sludge digestion occurs under conditions of anaerobism；In sludge digestion tank row
In the sludge for going out, a part of digested sludge is back to sequencing batch active sludge reaction tank, another part digested sludge discharge pond
Carry out sludge dewatering and disposal outward.
Preferably, the step（2）It is the method with gravity concentration or floatation thickening, reduces the moisture content of sludge.
Wherein, gravity concentration utilizes the natural subsidence separate mode of Action of Gravity Field, it is not necessary to external energy, is that one kind is most saved
The sludge concentration method of energy.Gravity concentration is a kind of sedimentation separation technique, and it is by forming high concentration sludge in precipitation
Layer reaches the purpose of thickened sludge, is the main body of current sludge concentration method.Single gravity concentration is dense in independent gravity
Completed in contracting pond, process is simple is effective.
Floatation thickening, floatation thickening is with gravity concentration conversely, being the week that mud granule is attached to by a large amount of micro-bubbles
Enclose, subtract short grained proportion and force to float.Floatation thickening method is easy to operate.
Preferably, the step（2）The foaming agent is alkane or fluorocarbons, and addition is solid material gross weight
The 0.9% of amount.Alkane or fluorocarbons are physical blowing agent, are Compositional type physical blowing agents, not only with coefficient of foaming
High, foam stability is good, the low advantage of bleeding quantity, while certain modifying function can also be played to magnesia cement, reduces product
The probability of scumming.Physical blowing agent is widely used to the production of the foaming magnesite product such as PLASTIC LAMINATED, light cellular partition board, and
And in some products（Magnesite fire-proof door core etc.）With the key effect that it concerns the success or failure of the matter.
Preferably, the step（1）When preparing slurry, the dispersant of solid material gross weight 0.6% is added.
Preferably, the step（1）When preparing slurry, the foam stabilizer of solid material gross weight 1.3% is added.
Preferably, the foam stabilizer is silicones polyethers type of latex type.Silicones polyethers type of latex type can control air bubble liquid-membrane
Structural stability, make surfactant molecule in the Methodistic distribution of liquid film of bubble, assign the good elasticity of foam and from
Repair ability.Advantage：Foam stabilizing effect is substantially, easy to use.
Specific embodiment of the invention is described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can within the scope of the claims make various deformations or amendments, this not shadow
Sound substance of the invention.
Claims (8)
1. a kind of method that sludge of sewage treatment plant prepares insulation material, it is characterised in that described to use sludge of sewage treatment plant
The method for preparing insulation material comprises the following steps：
Step（1）：Sludge slurry preparation：It is sludge, the choysotile that parts by weight are 40-70, the weight of 40-60 by parts by weight
Amount number is the slurry of 30-40% for the sandstone mixing and water adding of 4-12 is configured to solids content for the lime stone and parts by weight of 10-20
Material, and the ball milling in ball mill；
Step（2）：Foam formulation：Foaming agent water solution is stirred using high speed agitator, it is produced a large amount of foams；
Step（3）：Foamed slurry is prepared：By step（1）The good slurry of ball milling and step（2）Gained foams mix is uniform, must steep
Foam slurry；
Step（4）：It is prepared by insulation material：Gained foamed slurry is poured into mould, room temperature treats foamed slurry and mold side
Edge takes out after departing from, and dries, and sintering obtains environment protecting thermal insulating material.
2. the method that sludge of sewage treatment plant according to claim 1 prepares insulation material, it is characterised in that：The step
Suddenly（1）Sludge is pre-processed before preparing slurry, using sequencing batch active sludge.
3. the method that sludge of sewage treatment plant according to claim 2 prepares insulation material, it is characterised in that：Batch-type
Activated sludge process concrete technology is as follows：
Step（1）：Enter reaction tank by the sewage for pre-processing, while entering reaction by the digested sludge that sludge digestion tank flows back
Pond, sewage and sludge form mixed liquor in reaction tank；Mixed liquor experiences water inlet, aeration, precipitation, draining and treats in chronological order
Five basic working procedures of machine；Supernatant after bleeding stage, purification discharges sequencing batch active sludge reaction tank as water outlet, remains
Remaining mud discharging is to sludge concentration tank；
Step（2）：In sludge concentration tank, thickened sludge is emitted into sludge digestion tank and carries out digestion process, and supernatant is flowed back into
Row sewage disinfection treatment；
Step（3）：Thickened sludge enters sludge digestion tank, and sludge digestion occurs under conditions of anaerobism；In sludge digestion tank row
In the sludge for going out, a part of digested sludge is back to sequencing batch active sludge reaction tank, another part digested sludge discharge pond
Carry out sludge dewatering and disposal outward.
4. the method that sludge of sewage treatment plant according to claim 3 prepares insulation material, it is characterised in that：The step
Suddenly（2）It is the method with gravity concentration or floatation thickening, reduces the moisture content of sludge.
5. the method that sludge of sewage treatment plant according to claim 1 prepares insulation material, it is characterised in that：The step
Suddenly（2）The foaming agent is alkane or fluorocarbons, and addition is the 0.8-1.1% of solid material gross weight.
6. the method that sludge of sewage treatment plant according to claim 1 prepares insulation material, it is characterised in that：The step
Suddenly（1）When preparing slurry, the dispersant of solid material gross weight 0.5-1.0% is added.
7. the method that sludge of sewage treatment plant according to claim 1 prepares insulation material, it is characterised in that：The step
Suddenly（1）When preparing slurry, the foam stabilizer of solid material gross weight 1.1-1.5% is added.
8. the method that sludge of sewage treatment plant according to claim 7 prepares insulation material, it is characterised in that：It is described steady
Infusion is silicones polyethers type of latex type.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110407556A (en) * | 2019-08-05 | 2019-11-05 | 淮北市菲美得环保科技有限公司 | A kind of method and its application preparing high-strength light foam ceramic tile using municipal sludge |
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|---|---|---|---|---|
| CN101381191A (en) * | 2008-10-24 | 2009-03-11 | 梁林华 | Sludge treatment method and sludge foaming lightweight concrete produced therefrom and use |
| CN103936407A (en) * | 2014-03-31 | 2014-07-23 | 合肥科斯孚安全科技有限公司 | Preparation method of lightweight anorthite based thermal insulation material |
| CN104261561A (en) * | 2014-09-25 | 2015-01-07 | 扬州大学 | Sequencing batch reactor activated sludge process (SBR) with low yield of sludge and low energy consumption |
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2017
- 2017-03-30 CN CN201710200268.3A patent/CN106927862A/en not_active Withdrawn
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|---|---|---|---|---|
| CN101381191A (en) * | 2008-10-24 | 2009-03-11 | 梁林华 | Sludge treatment method and sludge foaming lightweight concrete produced therefrom and use |
| CN103936407A (en) * | 2014-03-31 | 2014-07-23 | 合肥科斯孚安全科技有限公司 | Preparation method of lightweight anorthite based thermal insulation material |
| CN104261561A (en) * | 2014-09-25 | 2015-01-07 | 扬州大学 | Sequencing batch reactor activated sludge process (SBR) with low yield of sludge and low energy consumption |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110407556A (en) * | 2019-08-05 | 2019-11-05 | 淮北市菲美得环保科技有限公司 | A kind of method and its application preparing high-strength light foam ceramic tile using municipal sludge |
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