CN109317098A - A kind of sludge base mixed adsorbing material and preparation method thereof - Google Patents
A kind of sludge base mixed adsorbing material and preparation method thereof Download PDFInfo
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- CN109317098A CN109317098A CN201811256990.XA CN201811256990A CN109317098A CN 109317098 A CN109317098 A CN 109317098A CN 201811256990 A CN201811256990 A CN 201811256990A CN 109317098 A CN109317098 A CN 109317098A
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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
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4812—Sorbents characterised by the starting material used for their preparation the starting material being of organic character
- B01J2220/485—Plants or land vegetals, e.g. cereals, wheat, corn, rice, sphagnum, peat moss
-
- 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
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4875—Sorbents characterised by the starting material used for their preparation the starting material being a waste, residue or of undefined composition
- B01J2220/4887—Residues, wastes, e.g. garbage, municipal or industrial sludges, compost, animal manure; fly-ashes
-
- 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
- C02F2101/30—Organic compounds
- C02F2101/308—Dyes; Colorants; Fluorescent agents
Abstract
The invention discloses a kind of preparation methods of sludge base mixed adsorbing material, are obtained by cracking carbonization under the slurries microwave irradiation comprising sludge, biomass straw, animal wool and glass fibre and alkali.Present invention firstly provides and attempt to solve the problems, such as the secondary pollution of carbon adsorbing material and bring heavy metal as made from sludge.It is found by numerous studies, biomass straw and alkali are added into sludge, the slurries are innovatively subjected to cracking carbonization under microwave irradiation again, effectively the heavy metal in sludge can be passivated and be fixed, adsorbent obtained is avoided to dissolve out in the heavy metal of use process, to achieve the effect that reduce its secondary pollution.On this basis, it adds animal wool and glass fibre participates in microwave-heating together with biomass and alkali, mixed adsorbing material adsorption effect obtained is more preferably.The present invention turns waste into wealth, and with pollution treatment of giving up, avoids secondary pollution, has good utility value and development prospect.
Description
Technical field
The invention belongs to waste sludge recycling treatment fields, more particularly to one kind to pass through microwave heating, and add biology
The method that matter, animal wool and glass fibre and sludge copyrolysis prepare sludge base adsorbent.
Background technique
Environmental problem brought by fast development with social economy and population receives the extensive concern in the whole world.At me
State, domestic water, industrial wastewater, agricultural and aquaculture sewage yield are increasing, and sewage treatment plant is continuously increased or expands
Greatly, excess sludge also increases therewith.Excess sludge is from residual active sludge or biomembrane in wastewater treatment process, color
It is often grey or Dark grey, relative density is more slightly larger than water, particle is thinner.It has moisture content is high and dewatering is poor, it is perishable,
Foul smelling contains the features such as a large amount of parasitic ovums and pathogenic microorganism, if do not dealt carefully with, is allowed to discharge, it will cause
Secondary pollution.Then, current hot topic is become for the processing method of disposal of excess sludge.
Currently, the processing disposal options of excess sludge are mainly sanitary landfills, compost, agricultural application and burning etc.[1],
These processing modes have biggish Potential environmental risk.The harmlessness disposing rate of China's residual active sludge is lower, and 2010 complete
State's residual active sludge harmlessness disposing rate is only 25.1%, and the processing cost of excess sludge has accounted for entire sewage disposal expense
25%-65%.And it presents and rises year by year trend.
It would therefore be highly desirable to develop a kind of both economically and environmentally beneficial Treatment of Sludge mode.
Pyrolyzing sludge processing is the hot spot studied at present, and compared with conventional process mode, the heavy metal in sludge is being pyrolyzed
After be fixed in pyrolytic carbon, and there is in pyrolytic process lower and acceptable gas discharge.In addition, pyrolyzing sludge solid
Product sludge base charcoal can be used as adsorbent use, and totle drilling cost (0.1-0.2USD/kg) is to prepare equivalence margin active carbon assembly
The 5-10% of this (2.0-2.2USD/kg).Therefore, compared with other traditional treatment methods, pyrolyzing sludge is a kind of safer, more
Promising method for sludge treatment.Currently, the heating method of pyrolysis mainly uses electric heating, it is a heat transfer process, disadvantage
End essentially consists in that time-consuming, and energy consumption is high and raw material uneven heating is even.
Due to base material poor quality, the content of ashes of the independent pyrogenically prepared adsorbent of excess sludge is higher, specific surface area
It is lower, and Leaching of Heavy Metals potential information requirement is higher, greatly limits its adsorption capacity and application prospect.
There is also a urgent problems for existing sludge base charcoal, that is, sludge prepares adsorbent material presence
Heavy metal dissolution the problem of be easy to causeing secondary pollution.
Summary of the invention
The deficiency that the dissolution of heavy metal existing for adsorbent material be easy to cause secondary pollution, this hair are prepared using sludge for solution
Improving eyesight is, proposes a kind of preparation method of sludge base mixed adsorbing material, it is intended to the heavy metal being passivated in sludge, for inhaling
Adsorbent heavy metal secondary pollution problem made from sludge is avoided while attached high concentrated organic wastewater.
A kind of preparation method of sludge base adsorbent, by including sludge, biomass straw, animal wool, glass fibre and alkali
Slurries microwave irradiation under cracking carbonization obtain.
Sludge contains plurality of heavy metal, and adsorbent obtained is easy to be easy to cause secondary pollution there are heavy metal dissolution, existing
Have and does not pay close attention to the technical problem in technology.Present invention firstly provides and attempt solve the carbon adsorbing material as made from sludge and bring
Heavy metal secondary pollution problem.It is found by numerous studies, biomass straw, animal wool and glass is added into sludge
Fiber and alkali slurries carry out cracking carbonization under microwave irradiation, can effectively be passivated the heavy metal in sludge and fix, and a huge sum of money
Belong to the concentration being precipitated than not adding the more preferable of animal wool and glass fibre.The method avoids adsorbent material obtained in use process
Heavy metal dissolution and can be used to adsorb high concentrated organic wastewater to achieve the effect that reduce its secondary pollution.
It in the present invention, by sludge, biomass straw, animal wool, glass fibre crushed after being dried or shreds, is then containing alkali
Aqueous solution in impregnate, obtain the slurries.
Dry and breaking method can refer to existing method.
Preferably, the granularity that sludge, biomass straw, glass fibre crush is 50-120 mesh.
Sludge of the method for the present invention especially suitable for heavy metals exceeding standard.
The sludge is at least one of black and odorous water river bottom mud, oil field sludge, Leather Factory's sludge.
Preferably, the content of the heavy metal of the sludge are as follows: Cr=514.24 ± 2.75mg/kg.
The study found that under preparation system of the present invention, the biomass straw, animal wool and glass fibre assist in alkali with
And microwave treatment mechanism is not easy to be precipitated from adsorbent material, reaches passivation sludge so that the heavy metal in sludge further fixes
In heavy metal, reduce the purpose of the heavy metal dissolution of adsorbent material obtained, moreover, can also cooperate with promotion material obtained
The absorption property of material.In addition, the present invention is also innovatively added with animal wool, the fluffy of sludge carbon particle is helped to maintain, is prevented
Only agglomeration bring adsorption capacity forfeiture is being used for a long time in it, and alleviating the big sludge carbon particle of fineness, vapour lock is got in use
Carry out bigger problem.
Preferably, the biomass straw is at least one of cotton stalk, bamboo, grapevine.The study found that preferred
Biomass straw facilitates the heavy metal passivation effect for further promoting sludge.
Further preferably, the biomass straw is bamboo.The bamboo is preferably stem's (being commonly called as bamboo pole) of bamboo.This hair
Bright research has been surprisingly found that, in the present invention, adds certain bamboo, compared to other biological matter stalk, can further promote dirt
The passivation effect of mud heavy metal.
Research it has furthermore been found that the mass ratio of sludge and biomass straw have to the passivation effect of sludge heavy-metal it is larger
Influence.Preferably, the mass ratio of the sludge (in terms of dry weight) and biomass straw is 1: 0.2-0.5.Pass through research
It was found that by the control of the mass ratio of sludge and biomass straw under the range, help further to be promoted biomass straw and alkali,
The collaboration passivation effect of microwave further decreases the heavy metal dissolution harm of adsorbent obtained.
Further preferably, the mass ratio of the sludge (in terms of dry weight) and biomass straw is 1: 0.4-0.5.Research hair
It is existing, under the preferred range, cooperate alkali and microwave action of the present invention, helps further to be passivated and fix biology
Heavy metal in charcoal significantly reduces its dissolution rate.
Research is further added animal wool and glass fibre, is facilitated it has furthermore been found that on the basis of biomass straw
The passivation effect for further promoting sludge heavy-metal, the heavy metal for helping to further decrease sludge adsorbing material obtained are molten
Toxicity out, in addition, additionally aiding promotion absorption property.
Preferably, the mass ratio of the sludge (in terms of dry weight) and glass fibre is 1: 0.2-0.5.It is sent out by research
It is existing, by the control of the mass ratio of sludge and glass fibre under the range, help further to promote biomass straw and alkali, microwave
Collaboration passivation effect, further decrease the heavy metal dissolution harm of adsorbent obtained.
Further preferably, the mass ratio of the sludge (in terms of dry weight) and glass fibre is 1: 0.2-0.3.Research hair
It is existing, under the preferred range, cooperate alkali and microwave action of the present invention, helps further to be passivated and fix biology
Heavy metal in charcoal significantly reduces its dissolution rate.
In the present invention, the additive amount of animal wool is less, it is preferable that sludge (in terms of dry weight), animal wool mass ratio be 1:
0.005-0.1；Further preferably 1: 0.01-0.02.
In the present invention, the alkali not only plays activation, more essentially consists in and the biomass straw, glass
Glass fiber and animal wool and microwave cooperating overcome the heavy metal of adsorbent obtained secondary for being passivated the heavy metal of sludge
Pollution.
Preferably, the alkali is alkali metal hydroxide and/or carbonate；Preferably potassium hydroxide.
The present inventor is the study found that the mass ratio of sludge and alkali has biggish shadow to the passivation effect of sludge heavy-metal
It rings.
Preferably, the gross mass and alkali weight of sludge (in terms of dry weight), biomass straw, animal wool and glass fibre
Mass ratio be 1: 0.2-0.5；Further preferably 1: 0.4-0.5.Surprisingly, the biology obtained under preferred scope
The heavy metal dissolution rate of charcoal is lower.
Preferably, by sludge, biomass straw, glass fibre is dry, crushes, animal wool is shredded or shredded, then
10~14h is impregnated in the aqueous solution containing alkali, obtains the slurries.By the soaking technology, can to sludge, biomass straw,
Glass fibre and animal wool carry out structure infiltration, help further to cooperate with promotion microwave effect, further decrease charcoal
Heavy metal release.
Preferably, the concentration of alkali is 25.9-31.0wt.%.
It is 1: 1.35-1.45 (w/w) as the solid-to-liquid ratio in preferred slurries.
The present invention innovatively has found,, can be with compared to common heating furnace heating method using microwave heating
Collaboration is formed comprising the raw material including alkali, biomass straw, animal wool and glass fibre, unexpectedly promotes sludge heavy-metal
Passivation effect, significantly reduce the heavy metal dissolution of adsorbent obtained.
Further study show that control the power of microwave, microwave heating cracking reaction system temperature and heating speed
Rate can further promote the effect of its collaboration passivation sludge heavy-metal.
Preferably, the power is 550~700W, further preferably 600~700W.Under the range, compare
In not controlling the situation under the range, effect is more excellent.
Preferably, the temperature of control cracking carbonisation is 400 DEG C -700 DEG C by the microwave irradiation；It is preferred that
It is 550 DEG C -650 DEG C.
Preferably, cracking carbonisation carries out under protective atmosphere.The protective atmosphere be, for example, nitrogen and/
Or inert gas.
Preferably, the heating rate of cracking carbonisation is preferably 20-65 DEG C/min；Preferably 45-65 DEG C/min.
Preferably, cracking carbonization time is 10-30min；Further preferably 20-25min.
Cracking carbonization after the completion of, then it is washed, drying, crush to get arrive the sludge adsorbing material.The grain of crushing
Diameter is, for example, 150-200 mesh.
A kind of preparation method of preferred sludge base mixed adsorbing material of the present invention, includes the following steps:
(1) will sludge, cotton stalk, glass fibre and wool drying after crush, after mixing with the hydrogen of certain mass concentration
Potassium oxide solution mixing, in impregnating 12h in sealing container, obtains mixed raw material；
(2) mixed raw material will be obtained after the step (1), microwave-heating carbonization-activation, pyrolysis is carried out under nitrogen protection
After the completion, it is crushed by washing and drying to get sludge base adsorbent is arrived.
The present invention also provides sludge bases made from the preparation method described in one kind to adsorb mixing material.
Compared with the conventional method, the invention has the benefit that
The present invention is used and is innovatively utilized comprising the material including sludge, biomass straw, animal wool, glass fibre and alkali
Microwave method is pyrolyzed, in this way, the heavy metal dissolution toxicity of adsorbent material obtained can unexpectedly be significantly reduced, also
Facilitate the service life and absorption property of promotion adsorbent material.Moreover, the present invention also shortens the duration of pyrolytic process,
Keep obtained adsorbent material gap structure more uniform.
The invention proposes a kind of new sludge base mixed adsorbing material preparation modes, are adjusted using addition biomass carbon
Agent, animal wool organic matter regulator and glass fibre solidification regulator carry out microwave-heating and prepare sludge adsorbing material, micro-
Wave heating raw material is heated more evenly, and obtained adsorbent pores gap structure is more flourishing, surface functional group is richer, and time-consuming short, efficiency
It is higher；Addition biomass copyrolysis improves the performance of adsorbent, and addition animal wool extends the service life of sludge carbon, with glass
Heavy metal can be further fixed in sludge by the collocation of fiber.
Adsorbent material produced by the present invention has abundant pore structure, also has excellent absorption property and GB5085.3-
2007 require the Leaching of Heavy Metals concentration within safety limit；Methylene blue batch adsorption test shows that its absorption property meets state
Family's wood activated charcoal primes standard.
Detailed description of the invention
Fig. 1 is the composition detection result of residue raw sewage used in case of the present invention.
Fig. 2 is the leaching concentration histogram that Cr in sludge base adsorbent is made in comparative example 1-5 of the present invention and embodiment 1-6.
Fig. 3 is that comparative example 1,5 of the present invention and embodiment 1,3-6 are made sludge base mixed adsorbing material and vary with temperature methylene
The test result of base indigo plant adsorbance.
Specific embodiment
To facilitate the understanding of the present invention, the present invention is done below in conjunction with Figure of description and preferred embodiment more complete
Face meticulously describes, but protection scope of the present invention is not limited to following specific embodiments.
Excess sludge, the drying of biomass straw and the crushing of animal wool and glass fibre are all made of existing routine side
Method.
The excess sludge ingredient that various embodiments of the present invention and comparative example use is shown in Fig. 1, Cr=514.24 ± 2.75mg/
kg；.
Comparative example 1
A kind of sludge base adsorbent of the invention, raw material are as follows: excess sludge, cotton stalk, potassium hydroxide and water.It is made
Preparation Method includes the following steps:
(1) excess sludge for being derived from certain sewage treatment plant and the cotton stalk for being derived from certain farm are crushed to 80 mesh, with
The mixture of raw material (referring to sludge and cotton stalk) is added in the mass ratio of sludge and cotton stalk 1: 0.5 after mixing) and potassium hydroxide matter
Amount is than obtaining mixed raw material in impregnating 12h in sealing container for 1: 0.4 28wt.% potassium hydroxide aqueous solution；
(2) mixed raw material will be obtained after the step (1), carries out microwave-heating under the nitrogen purging of 0.5L/min, if
It sets microwave-heating power 600W (temperature of reaction system has reached 600 DEG C), irradiation time 20min, it is naturally cold after the completion of pyrolysis
But to room temperature, the black product taken out in reaction kettle passes through washing and drying, is crushed to 200 mesh to get sludge base mixing and absorption is arrived
Material.
Embodiment 1
A kind of sludge base adsorbent of the invention, raw material are as follows: excess sludge, cotton stalk, wool, glass fibre, hydrogen
Potassium oxide and water.Preparation method includes the following steps:
(1) excess sludge for being derived from certain sewage treatment plant and the cotton stalk on certain farm will be taken to be crushed to 80 mesh, with dirt
Mud, cotton stalk, wool, glass fibre 1: 0.5: 0.01: 0.2 mass ratio that 28wt.% potassium hydroxide is added after mixing is water-soluble
Liquid (mixture of raw material (referring to sludge, cotton stalk, wool and glass fibre)) and potassium hydroxide quality ratio are 1: 0.4), hold in sealing
12h is impregnated in device, obtains mixed raw material；
(2) mixed raw material will be obtained after the step (1), carries out microwave-heating under the nitrogen purging of 0.5L/min, if
It sets microwave-heating power 600W (temperature of reaction system has reached 600 DEG C), irradiation time 20min, it is naturally cold after the completion of pyrolysis
But to room temperature, the black product taken out in reaction kettle passes through washing and drying, is crushed to 200 mesh to get sludge base mixing and absorption is arrived
Material.
Embodiment 2
A kind of sludge base adsorbent of the invention, raw material are as follows: excess sludge, cotton stalk, wool, glass fibre, hydrogen
Potassium oxide and water.Preparation method includes the following steps:
(1) by the excess sludge for being derived from certain sewage treatment plant and the equal powder of cotton stalk, wool, glass fibre for taking certain farmland
It is broken or shred to 80 mesh, it is added after mixing with the mass ratio of sludge, cotton stalk, wool, glass fibre 1: 0.4: 0.01: 0.2
28wt.% potassium hydroxide aqueous solution (wherein, the mixture of raw material (referring to sludge, cotton stalk, wool, glass fibre)) and potassium hydroxide
Mass ratio is 1: 0.4), in impregnating 12h in sealing container, obtaining mixed raw material；
(2) mixed raw material will be obtained after the step (1), carries out microwave-heating under the nitrogen purging of 0.5L/min, if
It sets microwave-heating power 700W (temperature of reaction system has reached 650 DEG C), irradiation time 20min, it is naturally cold after the completion of pyrolysis
But to room temperature, the black product taken out in reaction kettle passes through washing and drying, is crushed to 200 mesh to get sludge base mixing and absorption is arrived
Material.
Comparative example 2
A kind of sludge base adsorbent of the invention, raw material are as follows: excess sludge, grapevine, potassium hydroxide and water.It is prepared
Method includes the following steps:
(1) excess sludge for being derived from certain sewage treatment plant and the grapevine for being derived from certain orchard are crushed to 120 mesh, with dirt
33wt.% potassium hydroxide aqueous solution (raw material (sludge and grapevine is added in the mass ratio of mud and grapevine 1: 0.4 after mixing
Total weight) with potassium hydroxide quality ratio be 1: 0.5), in impregnating 12h in sealing container, obtain mixed raw material；
(2) mixed raw material will be obtained after the step (1), carries out microwave-heating under the nitrogen purging of 0.5L/min, if
It sets microwave-heating power 700W (temperature of reaction system has reached 650 DEG C), irradiation time 25min, it is naturally cold after the completion of pyrolysis
But to room temperature, the black product taken out in reaction kettle passes through washing and drying, is crushed to 180 mesh to get sludge base adsorbent is arrived.
Embodiment 3
A kind of sludge base adsorbent of the invention, raw material are as follows: excess sludge, grapevine, wool, glass fibre, hydrogen-oxygen
Change potassium and water.Preparation method includes the following steps:
(1) by the excess sludge for being derived from certain sewage treatment plant and the grapevine, wool and glass fibre that are derived from certain orchard
120 mesh are crushed to, are added after mixing with the mass ratio of sludge, grapevine, wool, glass fibre 1: 0.4: 0.01: 0.3
33wt.% potassium hydroxide aqueous solution (wherein, raw material (sludge, wool, glass fibre and grapevine total weight) and potassium hydroxide matter
Amount is than being 1: 0.5), in impregnating 12h in sealing container, obtaining mixed raw material；
(2) mixed raw material will be obtained after the step (1), carries out microwave-heating under the nitrogen purging of 0.5L/min, if
It sets microwave-heating power 700W (temperature of reaction system has reached 650 DEG C), irradiation time 25min, it is naturally cold after the completion of pyrolysis
But to room temperature, the black product taken out in reaction kettle passes through washing and drying, is crushed to 180 mesh to get sludge base mixing and absorption is arrived
Material.
Embodiment 4
It is compared with embodiment 3, difference, which is only that, is exchanged with pig hair for wool, remaining pretreatment mode and pyrolytic process parameter are equal
It remains unchanged.
Embodiment 5
Compared with Example 4, difference, which is only that, is exchanged with bamboo stem for grapevine, remaining pretreatment mode and pyrolytic process ginseng
Number remains unchanged.
Embodiment 6
Compared with Example 5, difference is only that, the matter of sludge, bamboo stem, wool, glass fibre 1: 0.2: 0.01: 0.5
Raw material is added in amount ratio after mixing；The mass ratio of sludge, wool, glass fibre and grapevine total weight and alkali is 1: 0.5；Its
His parameter is constant.
Comparative example 3
It is compared with embodiment 3, difference, which is only that, is exchanged with electric heating for microwave heating, and parameter is arranged and guarantees identical program liter
Warm process, remaining pretreatment mode and pyrolytic process parameter remain unchanged.
Comparative example 4
It is compared with embodiment 3, difference is only that, is not added with wool.
Comparative example 5
It is compared with embodiment 3, difference is only that, is not added with glass fibre.
The adsorpting data test method of Examples 1 to 6 and comparative example 1~5, heavy metal dissolve out test method:
Reference standard HJ 557-2010 carries out leaching test to adsorbent, and establishing criteria GB 5085.3-2007 is to reality
It applies and sludge base adsorbent progress leaching characteristic identification is made in a 1-6 and comparative example 1-5, Leaching of Heavy Metals amount data are shown in Table 1 He
Histogram 2.
Table 1
The study found that can surprisingly solve the dissolution poison of charcoal obtained using microwave method compared to common heating
Property, biomass microwave-heating together with sludge in addition, addition animal wool or glass fibre are arranged in pairs or groups can further decrease a huge sum of money
Belong to Leaching.
The measurement that methylene blue adsorption value is carried out referring to national standard (GB/T 12496.10), weighs the drying through crushing
Sample 0.100g, is respectively placed in the conical flask of 100mL tool grinding port plug, and suitable methylene blue test liquid is added with buret,
After all wettings, it is immediately placed on electronic oscillator and shakes 10min, it is 25 ± 5 DEG C of environment temperature, qualitative with the middling speed of 12.5cm
Filter paper is filtered.Filtrate is placed in the cuvette that optical path is 1 cm, measures suction at wavelength 665nm with spectrophotometer
Luminosity weighs 4.000g cupric sulfate crystals (CuSO with copper sulphate standard colour filter liquid4·5H2O) be dissolved in 1000mL water] extinction
Degree contrasts, consumed methylene blue test liquid ml be sample methylene blue adsorption value.Foundation above-mentioned steps,
Concussion time 30min, 60min, 90min, 120min, 150min and 180min is respectively set and carries out methylene blue adsorption value survey
It is fixed.Finally, calculating adsorptive value and drawing a diagram.The sludge base adsorbent being prepared in embodiment 1-6 and comparative example 1-5 is at any time
Between change methylene blue absorption Value Data it is as shown in Figure 3.Such as Fig. 3, the result shows that, when pyrolysis time is 120min, the present invention is real
The methylene blue adsorption value for applying sludge base adsorbent obtained in example reaches 143mg/g or more, meets national wood activated charcoal
Primes standard.In addition the absorption property for being added to the sample of animal wool and glass fibre, which is also generally higher than, is only added to biomass
Sludge made of adsorbent material.
Claims (10)
1. a kind of preparation method of sludge base mixed adsorbing material, which is characterized in that by including sludge, biomass straw, animal
The slurries of hair, glass fibre and alkali crack carbonization under microwave irradiation and obtain.
2. the preparation method of sludge base mixed adsorbing material as described in claim 1, which is characterized in that the sludge is black
At least one of smelly water body river bottom mud, oil field sludge, Leather Factory's sludge.
3. the preparation method of sludge base mixed adsorbing material as claimed in claim 2, which is characterized in that the sludge is attached most importance to
The exceeded sludge of metallic pollution, it is preferable that the content of its heavy metal are as follows: Cr=514.24 ± 2.75mg/kg.
4. the preparation method of sludge base mixed adsorbing material as described in claim 1, which is characterized in that the biomass straw
Stalk is at least one of cornstalk, cotton stalk, bamboo, grapevine；Preferably bamboo.
5. the preparation method of sludge base mixed adsorbing material as described in claim 1, which is characterized in that the animal wool is
At least one of pig hair, wool, ox hair；Preferably wool.
6. such as the preparation method of the described in any item sludge base mixed adsorbing materials of Claims 1 to 4, which is characterized in that sludge,
The mass ratio of biomass straw is 1: 0.2-0.5；Preferably 1: 0.4-0.5；
Preferably, sludge, animal wool mass ratio be 1: 0.005-0.1；Further preferably 1: 0.01-0.02；
Preferably, sludge, glass fibre mass ratio be 1: 0.2-0.5；Further preferably 1: 0.2-0.3.
7. such as the preparation method of the described in any item sludge base mixed adsorbing materials of Claims 1 to 4, which is characterized in that described
Alkali be alkali metal hydroxide and/or carbonate；Preferably potassium hydroxide；
Sludge, biomass straw, animal wool and glass fibre gross mass and alkali weight be 1: 0.2-0.5；Further preferably 1
∶0.4-0.5。
8. the preparation method of sludge base mixed adsorbing material as described in claim 1, which is characterized in that by sludge, biomass
Stalk, animal wool and glass fibre are dry, crush, and 10~14h is then impregnated in the aqueous solution containing alkali, obtains the slurries；
Solid-to-liquid ratio in slurries is 1: 1.2-1.5 (w/w)；The concentration of alkali is 16.7-33.3wt.%.
9. the preparation method of sludge base mixed adsorbing material as described in claim 1, which is characterized in that microwave power 550-
700W；Preferably 600~700W.
10. the preparation method of sludge base mixed adsorbing material as described in claim 1, which is characterized in that by described micro-
Amplitude is shone, and the temperature of control cracking carbonisation is 400 DEG C -700 DEG C；
The heating rate for cracking carbonisation is preferably 20-65 DEG C/min；
Preferably, cracking carbonisation carries out under protective atmosphere；Time is 10-30min.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110038516A (en) * | 2019-05-28 | 2019-07-23 | 齐齐哈尔大学 | Sludge adsorbing material and its preparation method and application |
| CN110204058A (en) * | 2019-07-05 | 2019-09-06 | 陈贞辉 | A kind of sewage treatment chemical reagent that can remove heavy metal |
| CN111499404A (en) * | 2020-04-26 | 2020-08-07 | 中国科学院城市环境研究所 | Method and system for preparing perforated bricks by adopting raw sludge |
| CN113307462A (en) * | 2021-06-11 | 2021-08-27 | 安徽尘缘节能环保科技有限公司 | Harmless treatment and resource utilization method of sludge |
| CN113415962A (en) * | 2021-07-21 | 2021-09-21 | 江苏辉能环境科技有限公司 | Rapid hydrothermal cracking treatment method and device for sludge |
| CN114958382A (en) * | 2022-03-17 | 2022-08-30 | 中南大学 | Carbon-based soil curing material, preparation thereof and application thereof in heavy metal contaminated soil remediation |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007245096A (en) * | 2006-03-17 | 2007-09-27 | Tokyo Electric Power Co Inc:The | Method for manufacturing useful material from biomass |
| CN102107872A (en) * | 2011-03-04 | 2011-06-29 | 南京工业大学 | Process for preparing active carbon by adding husks into chemical sludge |
| CN104888730A (en) * | 2015-05-20 | 2015-09-09 | 蚌埠德美过滤技术有限公司 | Active carbon adsorbent with functions of sterilization and anticorrosion |
| CN104961313A (en) * | 2015-06-24 | 2015-10-07 | 同济大学 | Method for enhancing heavy metal stabilization process in sludge anaerobic digestion process |
| CN105056900A (en) * | 2015-07-27 | 2015-11-18 | 刘雷 | Heavy metal ion absorbent preparation method on basis of wastes |
| CN105771897A (en) * | 2016-04-21 | 2016-07-20 | 天津城建大学 | Method for preparing charcoal through microwaves |
| CN106698880A (en) * | 2016-12-21 | 2017-05-24 | 福建师范大学 | Preparation method of sludge based biochar doped with hair |
| CN108067185A (en) * | 2016-11-16 | 2018-05-25 | 黄立 | A kind of preparation of high-efficient sewage water treatment absorbent and production method |
-
2018
- 2018-10-25 CN CN201811256990.XA patent/CN109317098A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007245096A (en) * | 2006-03-17 | 2007-09-27 | Tokyo Electric Power Co Inc:The | Method for manufacturing useful material from biomass |
| CN102107872A (en) * | 2011-03-04 | 2011-06-29 | 南京工业大学 | Process for preparing active carbon by adding husks into chemical sludge |
| CN104888730A (en) * | 2015-05-20 | 2015-09-09 | 蚌埠德美过滤技术有限公司 | Active carbon adsorbent with functions of sterilization and anticorrosion |
| CN104961313A (en) * | 2015-06-24 | 2015-10-07 | 同济大学 | Method for enhancing heavy metal stabilization process in sludge anaerobic digestion process |
| CN105056900A (en) * | 2015-07-27 | 2015-11-18 | 刘雷 | Heavy metal ion absorbent preparation method on basis of wastes |
| CN105771897A (en) * | 2016-04-21 | 2016-07-20 | 天津城建大学 | Method for preparing charcoal through microwaves |
| CN108067185A (en) * | 2016-11-16 | 2018-05-25 | 黄立 | A kind of preparation of high-efficient sewage water treatment absorbent and production method |
| CN106698880A (en) * | 2016-12-21 | 2017-05-24 | 福建师范大学 | Preparation method of sludge based biochar doped with hair |
Non-Patent Citations (7)
| Title |
|---|
| 刘立恒,林华,李海翔,许立巍: "《污泥活性炭的制备、表征及应用》", 30 April 2017, 北京：中国环境科学出版社 * |
| 吴忠艳等: ""生化剩余活性污泥中重金属脱除技术的研究"", 《石油化工环境保护》 * |
| 孙秀云，王连军，李健生，沈锦优编著: "《固体废物处理处置》", 28 February 2015, 北京：北京航空航天大学出版社 * |
| 翟世民等: ""污水处理厂污泥制备生物炭及应用的研究进展"", 《化工进展》 * |
| 赵文霞等: ""污泥制备活性炭过程中重金属含量的变化趋势"", 《环境科学与技术》 * |
| 邓辉等: ""棉秆与污泥共热解制备生物炭工艺优化及其结构与吸附性能"", 《农业工程学报》 * |
| 邹金龙著: "《污泥的材料化利用技术与原理》", 31 May 2015, 哈尔滨：黑龙江大学出版社 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110038516A (en) * | 2019-05-28 | 2019-07-23 | 齐齐哈尔大学 | Sludge adsorbing material and its preparation method and application |
| CN110204058A (en) * | 2019-07-05 | 2019-09-06 | 陈贞辉 | A kind of sewage treatment chemical reagent that can remove heavy metal |
| CN111499404A (en) * | 2020-04-26 | 2020-08-07 | 中国科学院城市环境研究所 | Method and system for preparing perforated bricks by adopting raw sludge |
| CN113307462A (en) * | 2021-06-11 | 2021-08-27 | 安徽尘缘节能环保科技有限公司 | Harmless treatment and resource utilization method of sludge |
| CN113415962A (en) * | 2021-07-21 | 2021-09-21 | 江苏辉能环境科技有限公司 | Rapid hydrothermal cracking treatment method and device for sludge |
| CN114958382A (en) * | 2022-03-17 | 2022-08-30 | 中南大学 | Carbon-based soil curing material, preparation thereof and application thereof in heavy metal contaminated soil remediation |
| CN114958382B (en) * | 2022-03-17 | 2023-11-10 | 中南大学 | Carbon-based soil solidifying material, preparation thereof and application thereof in repairing heavy metal contaminated soil |
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