CN106975441A - A kind of method that utilization biological fermentation process is modified to concave convex rod - Google Patents
A kind of method that utilization biological fermentation process is modified to concave convex rod Download PDFInfo
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- CN106975441A CN106975441A CN201710290212.1A CN201710290212A CN106975441A CN 106975441 A CN106975441 A CN 106975441A CN 201710290212 A CN201710290212 A CN 201710290212A CN 106975441 A CN106975441 A CN 106975441A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/12—Naturally occurring clays or bleaching earth
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
Abstract
The invention belongs to concave convex rod processing technique field, a kind of method being modified there is provided utilization biological fermentation process to concave convex rod, sludge is pre-processed to anaerobic fermentation tank using Unareobic fermentation and put into sludge raw material, and the microorganism species being made up of Thermophilic Bacteria ATO7 1, hydrogenogen, actinomyces are added, while adding cellulase and pronase, the cellulase and pronase of addition, it is 50 60 DEG C to control temperature, pH value is 5.6 6.8, and is stirred, and is fermented 23 days；The sludge after attapulgite clay and fermentation process is taken, is mixed and stirred for；By mixed material under the conditions of 20 30 DEG C heap buried 27 days；Mixed material after heap buried is dried under the conditions of 80 120 DEG C, makes water content below 3%.Mild condition of the present invention, technological requirement is simple, and power consumption is few, low for equipment requirements, improves the adsorptivity of concave convex rod.
Description
Technical field
The invention belongs to concave convex rod processing technique field, in particular it relates to which a kind of entered using biological fermentation process to concave convex rod
The modified method of row.
Background technology
Concave convex rod is a kind of common heavy metal inorganic passivant.Concave convex rod is also known as palygorskite, is a kind of layer chain structure
The clay mineral of zeopan containing Shuifu County, be mineralogically under the jurisdiction of sepiolite group.Because the microstructure under its Electronic Speculum is pin
It is shape, bar-shaped, therefore referred to as concave convex rod.The property such as the special fibre structure of attapulgite, unusual colloid, absorption and decolouring
Can, be widely used in chemical industry, light industry, agricultural, weaving, building materials, geological prospecting, casting, silicate industry, atomic energy industry,
, there are the laudatory titles such as " kings of thousand soil ", " soil of general-purpose " in the field such as environmental protection and pharmacy.
At present, thermal activation and acidified modified two methods research are more, and organically-modified research is relatively fewer.Application No.
201410237847.1 Chinese patent discloses the Concave-convex clay rod after a kind of acidifying, the concave convex rod after present invention acidifying
Stone clay increase substantially the absorption property of Concave-convex clay rod, percent of decolourization, catalytic action, specific surface area, porosity it is same
When, the colloid viscosity of the Concave-convex clay rod after acidifying can be increased and the Concave-convex clay rod pH value after acidifying is adjusted.Application number
A kind of attapulgite modified polytetrafluoroethyloil oil seals material and its preparation side are disclosed for 201610010978.5 Chinese patent
Method, the modified attapulgite of the present invention has preferable lipophile, close with polytetrafluoroethyloil oil seals polarity, therefore, it is possible to
It is dispersed in polytetrafluoroethyloil oil seals, so as to obtain the stable composite of performance.
Above patent is using acidifying and organically-modified method, the raising to performances such as attapulgite absorbent-type and lipophilies
Serve certain effect.But modified condition is harsh, the chemical raw material used is more, expends resource.
The present invention is modified the problem of existing with regard to concave convex rod, explores a kind of new method of modifying, and in mild condition, technique will
Ask simple, power consumption is few, it is low for equipment requirements on the premise of, improve the adsorptivity of concave convex rod.
The content of the invention
For defect of the prior art, concave convex rod is carried out using biological fermentation process it is an object of the invention to provide a kind of
Modified method, to provide a kind of concave convex rod method of modifying of novel environment friendly, improves its adsorptivity, while sludge is utilized
Come, realize resource reutilization.
The solution of the present invention is that sludge is fermented using microorganism species, and organic acid and hydrogen are produced in fermentation process
Deng gas, expand sludge volume, heap buried after the sludge after fermentation is mixed with attapulgite clay, organic acid enters to attapulgite clay
Row acidifying, increases number of perforations, specific surface area increase；Meanwhile, often containing impurity such as carbonate in attapulgite duct, by having
The acidifying of machine acid, can remove the impurity being distributed in attapulgite duct, dredge duct；Attapulgite adsorptivity is improved.Separately
Dried after outer compost under the conditions of 80-120 DEG C, dramatically increase concave convex rod specific surface area, even up to 350 square metres every gram.
Absorption property by attapulgite clay after the processing such as above-mentioned fermentation, acidifying, dry activation is superior.
The method that a kind of utilization biological fermentation process provided according to the present invention is modified to concave convex rod, concave convex rod modification side
Method specifically includes following steps：
（1）, using Unareobic fermentation sludge is pre-processed
The sludge raw material for accounting for its volume 70-80% is put into anaerobic fermentation tank, and adds sludge raw material dry weight 1/9-1/8 micro- life
Thing flora, the microorganism species are by Thermophilic Bacteria ATO7-1, hydrogenogen（Clostridium bifermentans）, actinomyces
（Actinomycete）Composition, while adding cellulase（Cellulase）And pronase（Pronase E）, addition
Cellulase（Cellulase）And pronase（Pronase E）Gross weight be sludge raw material dry weight 1/10-1/8, control
Temperature in anaerobic fermentation tank processed is 50-60 DEG C, and regulation pH value is between 5.6-6.8, and turn on agitator is stirred, fermentation
2-3 days, that is, obtain the sludge after fermentation process；
（2）, mixed processing
It is 15-20 to take weight ratio:1 attapulgite clay and step（1）Sludge after middle fermentation process, is mixed and stirred for, and obtains mixed
Compound material；
（3）, heap buried processing
By step（2）Middle mixed material heap buried 2-7 days under the conditions of 20-30 DEG C；Contain Thermophilic Bacteria ATO7- in sludge after fermentation
1st, hydrogenogen（Clostridium bifermentans）, actinomyces（Actinomycete）The microorganism species of composition, also contain
There is cellulase（Cellulase）And pronase（Pronase E）.
Meanwhile, the microorganism species metabolite in composting process, wherein the organic acid being metabolized makes four sides inside concave convex rod
Body is partly dissolved with octahedral structure, and undissolved octahedral structure plays a supportive role, and increases number of perforations, and specific surface area increases
Greatly；Meanwhile, often, by the acidifying of organic acid, it can remove containing impurity such as carbonate in attapulgite duct and be distributed in concave convex rod
Impurity in native duct, dredges duct；Attapulgite adsorptivity is improved.
（4）, dry
Mixed material after heap buried is dried under the conditions of 80-120 DEG C, makes water content below 3%.Attapulgite crystal structure
Belong to layer chain structure, the passage parallel with chain of tetrahedron bar interband formation is filled by hydrone, and crystal can be removed in heating
The water of different conditions in structure, internal structure becomes loose porous, so as to increase specific surface area, strengthens absorption affinity.It is natural concavo-convex
The specific surface area of rod soil is about 140-210 square metres every gram, and after being handled under the conditions of 80-120 DEG C, specific surface area is dramatically increased,
Even up to 350 square metres every gram.
Preferably, in the step（3）Described in mixed material in, add weight be its 2-4 times sodium hydroxide it is molten
Liquid, the mass fraction of sodium hydroxide solution is 10-15%, soaks 12-16h, is washed to suction filtration after neutrality.
It is that its 2-4 times sodium hydroxide solution carries out basification that weight is added in compound after heap buried processing, recessed
After convex rod soil soaks through alkali, internal structure can be partly dissolved；Undissolved tetrahedron plays a supportive role with octahedral structure；Hole count
Mesh increase, the increase of veil spacing.Due to the anion interchangeability of attapulgite, the less hydroxide ion of radius can be displaced
The larger anion of attapulgite interlayer portion radius, increase pore volume and net spacing.
Preferably, the step（3）Accumulated on the ground, mixed material is stacked in ventilation.
Preferably, the step（3）In mixed material heap buried hole in carry out heap buried.
Preferably, one layer of proof liner bottom of laying in the heap buried hole.
Preferably, the vertical water permeating pipeline of 2-5 roots and the horizontal water permeating pipeline of 2-4 roots are set in the heap buried hole.Mixed material
On the one hand microorganism species metabolism therein produces water, another aspect precipitation infiltration, along with material itself during heap buried
It is aqueous, it is therefore desirable to carry out drainage sunk well.
Preferably, the horizontal water permeating pipeline is provided with water seepage hole.
Preferably, the vertical water permeating pipeline is connected with horizontal water permeating pipeline, and infiltration, which collects, laggard infiltrates filtrate tanks.
Preferably, it is additionally provided with gas guide system in the heap buried hole.Mixed material microbial metabolism during heap buried
The gases such as methane are produced, if discharged not in time, blast are may result in.
Compared with prior art, the present invention has following beneficial effect：
（1）A kind of method that the utilization biological fermentation process that the present invention is provided is modified to concave convex rod, to provide novel environment friendly
Concave convex rod method of modifying, improves its adsorptivity, while sludge is used, realizes resource reutilization.
The solution of the present invention is that sludge is fermented using microorganism species, and organic acid and hydrogen are produced in fermentation process
Deng gas, expand sludge volume, heap buried after the sludge after fermentation is mixed with attapulgite clay, organic acid enters to attapulgite clay
Row acidifying, increases number of perforations, specific surface area increase；Meanwhile, often containing impurity such as carbonate in attapulgite duct, by having
The acidifying of machine acid, can remove the impurity being distributed in attapulgite duct, dredge duct；Attapulgite adsorptivity is improved.Separately
Dried after outer compost under the conditions of 80-120 DEG C, dramatically increase concave convex rod specific surface area, even up to 350 square metres every gram.
Absorption property by attapulgite clay after the processing such as above-mentioned fermentation, acidifying, dry activation is superior；
（2）Thermophilic Bacteria ATO7-1 of the present invention can secrete extracellular protease and amylase, growth preference temperature 45-70 DEG C it
Between, suitable pH value is 5.5-8.5, with preferable sludge solute effect.Extracellular protease depolymerization sludge micelle, Ran Hourong first
Bacteria cell wall is solved, intracellular organic matter is hydrolyzed；
（3）The present invention controls the temperature in anaerobic fermentation tank to be 50-60 DEG C, and turn on agitator is stirred, and is fermented 2-3 days,
Obtain the sludge after fermentation process；By mixed material under the conditions of 20-30 DEG C heap buried 2-7 days；By the mixed material after heap buried
Dried under the conditions of 80-120 DEG C, make water content below 3%.Whole modifying process mild condition, technique is simple, and power consumption is few, right
Equipment requirement is low.
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.
It is an object of the invention to provide a kind of method that utilization biological fermentation process is modified to concave convex rod, to provide one kind
The concave convex rod method of modifying of novel environment friendly, improves its adsorptivity, while sludge is used, realizes resource reutilization.
The solution of the present invention is that sludge is fermented using microorganism species, and organic acid and hydrogen are produced in fermentation process
Deng gas, expand sludge volume, heap buried after the sludge after fermentation is mixed with attapulgite clay, organic acid enters to attapulgite clay
Row acidifying, increases number of perforations, specific surface area increase；Meanwhile, often containing impurity such as carbonate in attapulgite duct, by having
The acidifying of machine acid, can remove the impurity being distributed in attapulgite duct, dredge duct；Attapulgite adsorptivity is improved.Separately
Dried after outer compost under the conditions of 80-120 DEG C, regulation pH value dramatically increases concave convex rod specific surface area between 5.6-6.8,
Even up to 350 square metres every gram.Pass through the adsorptivity of attapulgite clay after the processing such as above-mentioned fermentation, acidifying, dry activation
Can be superior.
The method that a kind of utilization biological fermentation process provided according to the present invention is modified to concave convex rod, concave convex rod modification side
Method specifically includes following steps：
（1）, using Unareobic fermentation sludge is pre-processed
The sludge raw material for accounting for its volume 70-80% is put into anaerobic fermentation tank, and adds sludge raw material dry weight 1/9-1/8 micro- life
Thing flora, described microorganism species are by Thermophilic Bacteria ATO7-1, hydrogenogen（Clostridium bifermentans）, actinomyces
（Actinomycete）Composition, while adding cellulase（Cellulase）And pronase（Pronase E）, addition
Cellulase（Cellulase）And pronase（Pronase E）Gross weight be sludge raw material dry weight 1/10-1/8, control
Temperature in anaerobic fermentation tank processed is 50-60 DEG C, and turn on agitator is stirred, and is fermented 2-3 days, that is, is obtained after fermentation process
Sludge；
Above-mentioned Thermophilic Bacteria ATO7-1, hydrogenogen（Clostridium bifermentans）, actinomyces（Actinomycete）Group
Into microorganism species, while add cellulase（Cellulase）And pronase（Pronase E）Can be by existing
Technology is produced or isolated.
（2）, mixed processing
It is 15-20 to take weight ratio:1 attapulgite clay and step（1）Sludge after middle fermentation process, is mixed and stirred for, and obtains mixed
Compound material；
（3）, heap buried processing
By step（2）Middle mixed material heap buried 2-7 days under the conditions of 20-30 DEG C；Contain Thermophilic Bacteria ATO7- in sludge after fermentation
1st, hydrogenogen（Clostridium bifermentans）, actinomyces（Actinomycete）The microorganism species of composition, also contain
There is cellulase（Cellulase）And pronase（Pronase E）.
Meanwhile, the microorganism species metabolite in composting process, wherein the organic acid being metabolized makes four sides inside concave convex rod
Body is partly dissolved with octahedral structure, and undissolved octahedral structure plays a supportive role, and increases number of perforations, and specific surface area increases
Greatly；Meanwhile, often, by the acidifying of organic acid, it can remove containing impurity such as carbonate in attapulgite duct and be distributed in concave convex rod
Impurity in native duct, dredges duct；Attapulgite adsorptivity is improved.
（4）, dry
Mixed material after heap buried is dried under the conditions of 80-120 DEG C, makes water content below 3%.Attapulgite crystal structure
Belong to layer chain structure, the passage parallel with chain of tetrahedron bar interband formation is filled by hydrone, and crystal can be removed in heating
The water of different conditions in structure, internal structure becomes loose porous, so as to increase specific surface area, strengthens absorption affinity.It is natural concavo-convex
The specific surface area of rod soil is about 140-210 square metres every gram, and after being handled under the conditions of 80-120 DEG C, specific surface area is dramatically increased,
Even up to 350 square metres every gram.
Preferably, in the step（3）Described in mixed material in, add weight be its 2-4 times sodium hydroxide it is molten
Liquid, the mass fraction of sodium hydroxide solution is 10-15%, soaks 12-16h, is washed to suction filtration after neutrality.
It is that its 2-4 times sodium hydroxide solution carries out basification that weight is added in compound after heap buried processing, concavo-convex
After rod soil soaks through alkali, internal structure can be partly dissolved；Undissolved tetrahedron plays a supportive role with octahedral structure；Number of perforations
Increase, the increase of veil spacing.Due to the anion interchangeability of attapulgite, the less hydroxide ion of radius can displace recessed
The larger anion of partial radius between convex rod rock layers, increase pore volume and net spacing.
Preferably, the step（3）Accumulated on the ground, mixed material is stacked in ventilation.
Preferably, the step（3）In mixed material heap buried hole in carry out heap buried.
Preferably, one layer of proof liner bottom of laying in the heap buried hole.
Preferably, the vertical water permeating pipeline of 2-5 roots and the horizontal water permeating pipeline of 2-4 roots are set in the heap buried hole.Mixed material
On the one hand microorganism species metabolism therein produces water, another aspect precipitation infiltration, along with material itself during heap buried
It is aqueous, it is therefore desirable to carry out drainage sunk well.
Preferably, the horizontal water permeating pipeline is provided with water seepage hole.
Preferably, the vertical water permeating pipeline is connected with horizontal water permeating pipeline, and infiltration, which collects, laggard infiltrates filtrate tanks.
Preferably, it is additionally provided with gas guide system in the heap buried hole.Mixed material microbial metabolism during heap buried
The gases such as methane are produced, if discharged not in time, blast are may result in.
Compared with prior art, the present invention has following beneficial effect：
（1）A kind of method that the utilization biological fermentation process that the present invention is provided is modified to concave convex rod, to provide novel environment friendly
Concave convex rod method of modifying, improves its adsorptivity, while sludge is used, realizes resource reutilization.
The solution of the present invention is that sludge is fermented using microorganism species, and organic acid and hydrogen are produced in fermentation process
Deng gas, expand sludge volume, heap buried after the sludge after fermentation is mixed with attapulgite clay, organic acid enters to attapulgite clay
Row acidifying, increases number of perforations, specific surface area increase；Meanwhile, often containing impurity such as carbonate in attapulgite duct, by having
The acidifying of machine acid, can remove the impurity being distributed in attapulgite duct, dredge duct；Attapulgite adsorptivity is improved.Separately
Dried after outer compost under the conditions of 80-120 DEG C, dramatically increase concave convex rod specific surface area, even up to 350 square metres every gram.
Absorption property by attapulgite clay after the processing such as above-mentioned fermentation, acidifying, dry activation is superior；
（2）Thermophilic Bacteria ATO7-1 of the present invention can secrete extracellular protease and amylase, growth preference temperature 45-70 DEG C it
Between, suitable pH value is 5.5-8.5, with preferable sludge solute effect.Extracellular protease depolymerization sludge micelle, Ran Hourong first
Bacteria cell wall is solved, intracellular organic matter is hydrolyzed；
（3）The present invention controls the temperature in anaerobic fermentation tank to be 50-60 DEG C, and turn on agitator is stirred, and is fermented 2-3 days,
Obtain the sludge after fermentation process；By mixed material under the conditions of 20-30 DEG C heap buried 2-7 days；By the mixed material after heap buried
Dried under the conditions of 80-120 DEG C, make water content below 3%.Whole modifying process mild condition, technique is simple, and power consumption is few, right
Equipment requirement is low.
Embodiment 1
The method that a kind of utilization biological fermentation process that on the one hand the present embodiment provides is modified to concave convex rod, concave convex rod modification side
Method specifically includes following steps：
（1）, using Unareobic fermentation sludge is pre-processed
Put into anaerobic fermentation tank and account for the sludge raw material of its volume 80%, and add the microorganism species of sludge raw material dry weight 1/9,
Described microorganism species are by Thermophilic Bacteria ATO7-1, hydrogenogen（Clostridium bifermentans）, actinomyces
（Actinomycete）Composition, while adding cellulase（Cellulase）And pronase（Pronase E）, addition
Cellulase（Cellulase）And pronase（Pronase E）Gross weight be sludge raw material dry weight 1/8, control is detested
Temperature in aerobe fermentation tank is 50-60 DEG C, and regulation pH value is between 5.6-6.8, and turn on agitator is stirred, and ferments 3 days,
Obtain the sludge after fermentation process；
（2）, mixed processing
It is 20 to take weight ratio:1 attapulgite clay and step（1）Sludge after middle fermentation process, is mixed and stirred for, and obtains mixture
Material；
（3）, heap buried processing
By step（2）Middle mixed material heap buried 2 days under the conditions of 30 DEG C.
（4）, dry
Mixed material after heap buried is dried under the conditions of 80-120 DEG C, makes water content below 3%.
In the step（3）Described in mixed material in, add weight be its 4 times sodium hydroxide solution, hydroxide
The mass fraction of sodium solution is 10, soaks 16h, is washed to suction filtration after neutrality.
The step（3）Accumulated on the ground, mixed material is stacked in ventilation.
One layer of proof liner bottom of laying in the heap buried hole.
5 vertical water permeating pipelines and 2 horizontal water permeating pipelines are set in the heap buried hole.
The horizontal water permeating pipeline is provided with water seepage hole.
The vertical water permeating pipeline is connected with horizontal water permeating pipeline, and infiltration, which collects, laggard infiltrates filtrate tanks.
Gas guide system is additionally provided with the heap buried hole.
Embodiment 2
The method that a kind of utilization biological fermentation process that on the one hand the present embodiment provides is modified to concave convex rod, concave convex rod modification side
Method specifically includes following steps：
（1）, using Unareobic fermentation sludge is pre-processed
Put into anaerobic fermentation tank and account for the sludge raw material of its volume 70%, and add the microorganism species of sludge raw material dry weight 1/8,
It is described by Thermophilic Bacteria ATO7-1, hydrogenogen（Clostridium bifermentans）, actinomyces（Actinomycete）Composition,
Cellulase is added simultaneously（Cellulase）And pronase（Pronase E）, the cellulase of addition（Cellulase）
And pronase（Pronase E）Gross weight be the 1/10 of sludge raw material dry weight, control the temperature in anaerobic fermentation tank to be
50-60 DEG C, regulation pH value is between 5.6-6.8, and turn on agitator is stirred, and ferments 2 days, that is, obtains after fermentation process
Sludge；
（2）, mixed processing
It is 15 to take weight ratio:1 attapulgite clay and step（1）Sludge after middle fermentation process, is mixed and stirred for, and obtains mixture
Material；
（3）, heap buried processing
By step（2）Middle mixed material heap buried 2 days under the conditions of 20-30 DEG C.
（4）, dry
Mixed material after heap buried is dried under the conditions of 80-120 DEG C, makes water content below 3%.
In the step（3）Described in mixed material in, add weight be its 2 times sodium hydroxide solution, hydroxide
The mass fraction of sodium solution is 15%, soaks 12h, is washed to suction filtration after neutrality.
The step（3）In mixed material carry out heap buried 2 days in heap buried hole.
One layer of proof liner bottom of laying in the heap buried hole.
2 vertical water permeating pipelines and 4 horizontal water permeating pipelines are set in the heap buried hole.
The horizontal water permeating pipeline is provided with water seepage hole.
The vertical water permeating pipeline is connected with horizontal water permeating pipeline, and infiltration, which collects, laggard infiltrates filtrate tanks.
Gas guide system is additionally provided with the heap buried hole.
Embodiment 3
The method that a kind of utilization biological fermentation process that on the one hand the present embodiment provides is modified to concave convex rod, concave convex rod is modified
Method specifically includes following steps：
（1）, using Unareobic fermentation sludge is pre-processed
Put into anaerobic fermentation tank and account for the sludge raw material of its volume 75%, and add the microorganism species of sludge raw material dry weight 1/9,
Described microorganism species are by Thermophilic Bacteria ATO7-1, hydrogenogen（Clostridium bifermentans）, actinomyces
（Actinomycete）Composition, while adding cellulase（Cellulase）And pronase（Pronase E）, addition
Cellulase（Cellulase）And pronase（Pronase E）Gross weight be sludge raw material dry weight 1/9, control is detested
Temperature in aerobe fermentation tank is 50-60 DEG C, and regulation pH value is between 5.6-6.8, and turn on agitator is stirred, and ferment 2-3
My god, that is, obtain the sludge after fermentation process；
（2）, mixed processing
It is 17 to take weight ratio:1 attapulgite clay and step（1）Sludge after middle fermentation process, is mixed and stirred for, and obtains mixture
Material；
（3）, heap buried processing
By step（2）Middle mixed material heap buried 5 days under the conditions of 20-30 DEG C.
（4）, dry
Mixed material after heap buried is dried under the conditions of 90 DEG C, makes water content below 3%.
In the step（3）Described in mixed material in, add weight be its 3 times sodium hydroxide solution, hydroxide
The mass fraction of sodium solution is 13%, soaks 15h, is washed to suction filtration after neutrality.
The step（3）In mixed material carry out heap buried 4 days in heap buried hole.
One layer of proof liner bottom of laying in the heap buried hole.
3 vertical water permeating pipelines and 3 horizontal water permeating pipelines are set in the heap buried hole.
The horizontal water permeating pipeline is provided with water seepage hole.
The vertical water permeating pipeline is connected with horizontal water permeating pipeline, and infiltration, which collects, laggard infiltrates filtrate tanks.
Gas guide system is additionally provided with the heap buried hole.
Embodiment 4
Performance test：Determine the method for COD clearances in waste water to test modified attapulgite of the invention using potassium bichromate
Absorption property, step is as follows：
（1）In printing house's discharge of wastewater mouth takes well mixed water sample to put the backflow conical flask of ground, mercuric sulfate is added, is shaken
Make dissolving, it is accurate to add potassium bichromate standard liquid and several small bead or zeolite, ground reflux condensing tube is connected, from condensation
Pipe is suitable for reading to be slowly added into sulfuric acid-silver sulfate solution, and gently shaking conical flask mixes solution, is heated to reflux（From when coming to life
Timing）.
（2）After cooling, condensation tube wall is rinsed with water, conical flask is removed.
（3）After solution is cooled down once again, plus ferroin indicator, titrated with iron ammonium sulfate standard liquid, the face of solution
Color is terminal through blue-green to bronzing by yellow, records the consumption of l ferrous ammonium sulfate solution.
（4）When determining water sample, with double distilled water, blank test is made by same operating procedure.Sulfuric acid during record titration blank
The consumption of ferrous ammonium salt solution.
Note：It is related to the amount of the amount of solution respectively in embodiment in above step to give.
COD concentration calculation formula is as follows：
COD（O2, mg/L）=（V0-V1）×c×8×1000/V
In formula：The concentration of c- iron ammonium sulfate standard liquids（mol/L）；
The consumption of iron ammonium sulfate standard liquid when V0- titrates blank（ml）；
The consumption of iron ammonium sulfate standard liquid during V1- Titration Water Samples（ml）；
The volume of V- water samples（ml）；8- oxygen（1/2 O）Molal weight（g/mol）.
Calculate COD concentration A when being not added with adsorbent of the present invention, addition respectively by above-mentioned steps and calculation formula originally
COD concentration B during invention adsorbent, calculates COD clearance, COD clearance=B-A/A；
Comparative example is set：According to above-mentioned experiment condition contrived experiment and calculate addition activated carbon COD clearance（In experiment
Each amount of solution is prepared according to the amount of each solution of embodiment 2）, as a result as shown in table 1：
The embodiment 1-5 performance test data lists of table 1
| Experimental project | Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example |
| COD clearances | 89.9% | 91.1% | 93.3% | 77.3% |
Interpretation of result：From the data in table 1, it can be seen that the COD clearances of embodiment 1, embodiment 2 and embodiment 3 relatively addition activated carbon
COD clearance it is high, illustrate the superior compared with activated carbon to COD absorption properties of embodiment 1, embodiment 2 and embodiment 3, it was demonstrated that
Raising of the method that the utilization biological fermentation process that the present invention is provided is modified to concave convex rod to attapulgite adsorptivity has aobvious
Works is used.
The specific embodiment of the present 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 make various deformations or amendments within the scope of the claims, this not shadow
Ring the substantive content of the present invention.
Claims (9)
1. a kind of method that utilization biological fermentation process is modified to concave convex rod, it is characterised in that：Methods described specifically include as
Lower step,
(1), sludge is pre-processed using Unareobic fermentation：The sludge for accounting for its volume 70-80% is put into anaerobic fermentation tank
Raw material, and sludge raw material dry weight 1/9-1/8 microorganism species are added, the microorganism species are by Thermophilic Bacteria ATO7-1, production hydrogen
Bacterium, actinomyces composition, while adding cellulase and pronase, the cellulase of addition and the gross weight of pronase
For the 1/10-1/8 of sludge raw material dry weight, it is 50-60 DEG C to control the temperature in anaerobic fermentation tank, regulation pH value 5.6-6.8 it
Between, and turn on agitator is stirred, and ferments 2-3 days, that is, obtains the sludge after fermentation process；
(2), mixed processing：It is 15-20 to take weight ratio:Sludge in 1 attapulgite clay and step (1) after fermentation process, is mixed
Merge stirring, obtain mixed material；
(3), heap buried is handled：By mixed material heap buried 2-7 days under the conditions of 20-30 DEG C in step (2)；
(4), dry：Mixed material after heap buried is dried under the conditions of 80-120 DEG C, makes water content below 3%.
2. the method that utilization biological fermentation process according to claim 1 is modified to concave convex rod, it is characterised in that in institute
State in the mixed material described in step (3), addition weight is its 2-4 times sodium hydroxide solution, the matter of sodium hydroxide solution
Amount fraction is 10-15%, soaks 12-16h, is washed to suction filtration after neutrality.
3. the method that utilization biological fermentation process according to claim 1 is modified to concave convex rod, it is characterised in that described
Step (3) is accumulated on the ground, and mixed material is stacked in ventilation.
4. the method that utilization biological fermentation process according to claim 1 is modified to concave convex rod, it is characterised in that described
Mixed material in step (3) carries out heap buried in heap buried hole.
5. the method that utilization biological fermentation process according to claim 4 is modified to concave convex rod, it is characterised in that described
One layer of proof liner bottom of laying in heap buried hole.
6. the method that the utilization biological fermentation process according to claim 4 or 5 is modified to concave convex rod, it is characterised in that
The vertical water permeating pipeline of 2-5 roots and the horizontal water permeating pipeline of 2-4 roots are set in the heap buried hole.
7. the method that utilization biological fermentation process according to claim 6 is modified to concave convex rod, it is characterised in that institute
State horizontal water permeating pipeline and be provided with water seepage hole.
8. the method that utilization biological fermentation process according to claim 6 is modified to concave convex rod, it is characterised in that described
Vertical water permeating pipeline is connected with horizontal water permeating pipeline, is seeped water to collect and laggard is infiltrated filtrate tanks.
9. the method that utilization biological fermentation process according to claim 4 is modified to concave convex rod, it is characterised in that described
Heap buried is additionally provided with gas guide system in hole.
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