CN109179928A - The method of content of beary metal in the protein supernatant extracted in a kind of reduction sludge - Google Patents
The method of content of beary metal in the protein supernatant extracted in a kind of reduction sludge Download PDFInfo
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- CN109179928A CN109179928A CN201811136640.XA CN201811136640A CN109179928A CN 109179928 A CN109179928 A CN 109179928A CN 201811136640 A CN201811136640 A CN 201811136640A CN 109179928 A CN109179928 A CN 109179928A
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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
- C02F11/008—Sludge treatment by fixation or solidification
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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
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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
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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
- C02F11/004—Sludge detoxification
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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Abstract
The invention belongs to solid waste and recycling field, provide a kind of method of content of beary metal in the protein supernatant that extracts in reduction sludge, include the following steps: that (1) chooses at least one of sepiolite and flyash as passivator, and is subject to modification；(2) heavy metal in modified passivator passivation sludge is utilized；(3), using the protein supernatant in the sludge after ultrasonic wave and the passivation of papain combined extracting.By modified to passivator in step (1), increase the porosity of passivator, its absorption and ion-exchange capacity to heavy metal is improved, the sludge after being passivated in step (3) using ultrasonic wave and papain Combined Treatment improves extraction rate of protein.The efficiency that the protein yields that this method is easy to operate, feasibility is high, extracts are high, reduce the content of heavy metal in protein supernatant, improve recycling sludge.
Description
Technical field
The present invention relates to the methods of content of beary metal in the protein supernatant extracted in a kind of reduction sludge, belong to solid
Waste processing and recycling field.
Background technique
In recent years, as China's economic development and urbanization rhythm are constantly accelerated, wastewater treatment rate is continuously improved, same with this
When, the yield of urban sewage treatment plant sludge is also significantly increased, every to have a large amount of sludge to generate every year.Currently, countries in the world master
The sludge disposal method wanted is to progress compost, desiccation, burning, landfill, land use after sludge dewatering, this can not only waste dirt
Heavy Metals in Sludge can be also discharged into ambient enviroment by the resource in mud, cause the secondary pollution of environment.Contain in activated sludge
There is organic matter abundant, is a kind of potential renewable resource.Studies have shown that protein, polysaccharide and some other carbon hydrate
Object is the chief component of organic matter in sludge.In recent years, China also gradually carried out the extraction to protein in sludge with
The research utilized, but the preparation and extracting method of protein in sludge are laid particular emphasis on, further control the research of content of beary metal
Seldom.
Such as Chinese patent, publication date: on March 20th, 2013, publication number: CN102977181A, application number:
2012051795.5 patent of invention " protein extracting method in biological sludge " propose a kind of municipal wastewater biology treatment process
In protein extracting method in generated biological sludge, but in the actual process since sludge source everywhere is different, sludge acid
Hydrolytic process cannot completely remove the heavy metal ion in sludge, cause supernatant heavy metal species ion concentration higher, be not suitable for
As other applications such as fertilizer, and reaction temperature is higher, can bring more serious secondary pollution.Meanwhile reaction temperature is higher,
Also it will increase energy consumption.
Such as Chinese patent, publication date: on October 3rd, 2007, publication number: CN101045599A, application number:
200710078443.2 patent of invention " a method of processing sludge heavy-metal " proposes blunt using quick lime modified coal ash
Change the zinc (Zn) and copper (Cu) that content is high in processing sludge, but the method lays particular emphasis on the exchangeable species for reducing sludge and organic knot
The biological effectiveness of state is closed, subsequent processing is that sludge is used as to the greening in gardens, does not extract organic matter in sludge and adds
To utilize, the waste of resource is caused, it is not thoroughly to remove that remaining heavy metal, which is still present in the soil of greening,.
The excess sludge generated using activated sludge process is mainly by bacterium, protozoan, metazoa, algae and suspended matter
Etc. material compositions, valuable organic substances such as nucleic acid, protein, polysaccharide and lipid rich in, while also containing with zinc
(Zn) and the detection device for multi metallic elements based on copper (Cu), content accounts about the 0.5~2% of mud dry weight, even higher.With much money
Belonging to can be by food chain enrichment, the migration in the ecosystem, and because it cannot be decomposed by the microorganisms, total amount is constant, can only occur each
Mutually converting between kind form has very big harmfulness to the mankind and ecological environment.
Increasingly people is caused to pay close attention to as the processing disposition of sludge causes, how to extract protein in sludge and be subject to
Resource utilization has been subjected to studying both at home and abroad to be paid attention to extensively, and there are many methods to extract protein in sludge, to supernatant
Application also possess some special knowledge, but due to sludge source complexity, cause content of beary metal in supernatant to be not quite similar, will directly mention
The protein supernatant of taking-up, which is applied to, will certainly actually generate heavy metals exceeding standard, for environment, farmland grain and food residue
Bring problem very serious, it is therefore desirable to reduce content of beary metal in supernatant.
Summary of the invention
In consideration of it, the present invention provides the sides of content of beary metal in the protein supernatant extracted in a kind of reduction sludge
Method, the protein supernatant that this method is extracted is high with protein yields, content of beary metal is low, can be directly as reality after processing
The raw material of application, passivator use sepiolite and/or flyash, and the prices of raw materials are low, extracting method is simple.
Technical solution provided by the invention is as follows: a kind of to reduce content of beary metal in the protein supernatant extracted in sludge
Method, include the following steps:
(1), modified passivator
It chooses at least one of sepiolite and flyash and is used as passivator, and be subject to modification, method of modifying is as follows:
Alkali modification is carried out to flyash: flyash being uniformly mixed in mass ratio for 5:6 with sodium hydroxide, and gained is mixed
Object is closed in Muffle furnace with 500 DEG C~600 DEG C of temperature calcination, mixture taking-up is cooled down after roasting 1~2h, is then ground to
Powder obtains modified coal ash；
It is modified to carry out acid to sepiolite: after physical purification sepiolite, it is 5% that volumetric concentration, which is added, by solid-liquid mass ratio 1:15
Hydrochloric acid, 1~2h is stirred at 65~75 DEG C, retains filter cake after suction filtration, is taken after then drying 11~13h at 110~120 DEG C
Out, after being crushed, modified meerschaum is obtained；
(2), the heavy metal in modified passivator passivation sludge is utilized
It is added in secondary settling tank sludge, is stirred according to the passivator that 0.1g/gTSS has been modified by butt matter quality in sludge
Uniformly, it is passivated 12~15 days at room temperature, the sludge after being passivated；
Wherein, the good passivator of the modification are as follows:
The mixture of modified coal ash or modified meerschaum or modified coal ash and modified meerschaum in step (1),
In, when the passivator being modified is the mixture of modified coal ash and modified meerschaum, modified coal ash and modified meerschaum
Mass ratio be 1:3~3:1；
(3), using the protein supernatant in the sludge after ultrasonic wave and the passivation of papain combined extracting
(31), the sludge after being passivated obtained in step (2) is put into ultrasonic cell disruption instrument and carries out ultrasound, passed through
The mechanical energy of ultrasonic wave destroys the cell wall structure of microbial cell surface densification, wherein ultrasonic power is 180~200W, is surpassed
The sound time is 35~50min；
(32), the Papain of 0.04g/gTSS is added thereto according to butt matter quality in the sludge in step (31)
Enzyme, and be put into constant temperature oscillator and reaction is hydrolyzed, hydrolysis temperature is 50~70 DEG C, and hydrolysis time is 4~6h, and hydrolysis is completed
After be placed in boiling water 10~20min of inactivation, later, cooling sludge puts centrifuge into and is centrifuged 20~30min, abandons precipitating, obtains
The low protein supernatant of content of beary metal.
It is preferred that during carrying out alkali modification to flyash in step (1), roasting temperature of the gained mixture in Muffle furnace
Degree is 550 DEG C, calcining time 1h；During carrying out sour be modified to sepiolite, whipping temp is 70 DEG C, and mixing time is
1h, drying temperature are 110 DEG C, drying time 12h.
Further preferably, in step (2), passivation time is 14 days.
Further preferably, in step (31), ultrasonic power 180W, ultrasonic time 40min.
Further preferably, in step (32), the revolving speed of constant temperature oscillator is 160r/min, and hydrolysis temperature is 60 DEG C, hydrolysis
Time is 5h, inactivation time 15min, centrifugation time 20min.
The method of content of beary metal in the protein supernatant extracted in reduction sludge provided by the invention, using modified
Mode can increase the porosity of passivator (flyash and/or sepiolite), improve flyash and/or sepiolite absorption and
Ion-exchange capacity improves passivation effect.
Sludge after the extraction of protein supernatant is passivated using ultrasonic wave and papain Combined Treatment in the present invention,
It extracts in sludge during protein, realizes being completely severed for microbial cell in sludge, cell internal protein matter is released
Put, improve extraction rate of protein, conducive to protein supernatant post-production foaming agent, in terms of application.
The method of content of beary metal, treats passivation in the protein supernatant extracted in reduction sludge provided by the invention
There is no limit passivating process is easy to operate, no high-temperature and high-pressure conditions, and the protein yields of extraction are high, a huge sum of money for the moisture content of sludge
Belong to content to significantly reduce.
Flyash and sepiolite all have porous structure, have certain adsorption capacity, but many in forming process
Hole be it is closed, need to closed hole is either physically or chemically opened, to improve its porosity and specific surface area, the present invention
In alkali modification is carried out to flyash, it is modified to carry out acid to sepiolite, their absorption and ion-exchange capacity can be improved.
Flyash is power plant's by-product, and sepiolite is the natural mineral matter of abundance, cheap and easy to get, present invention selection two
At least one of person is used as passivator, reduces the cost of passivation.It can be mentioned from sludge using method provided by the invention
The low protein supernatant of content of beary metal is taken out, the efficiency of recycling sludge is improved.
Specific embodiment:
The present invention is further expalined below in conjunction with specific embodiment, but the not limitation present invention.
Embodiment 1
The method of content of beary metal, includes the following steps: in the protein supernatant extracted in a kind of reduction sludge
(1), modified passivator
Flyash is chosen as passivator, and is subject to modification, method of modifying is as follows:
Alkali modification is carried out to flyash: flyash being uniformly mixed in mass ratio for 5:6 with sodium hydroxide, and gained is mixed
Object is closed in Muffle furnace with 550 DEG C of temperature calcination, mixture taking-up is cooled down after roasting 1h, powder is then ground to, obtains
Modified coal ash；
(2), the heavy metal in modified passivator passivation sludge is utilized
0.1g/gTSS modified coal ash is added to secondary settling tank sludge according to butt matter quality in sludge, and (moisture content is
95%) it in, stirs evenly, is passivated 14 days at room temperature, the sludge after being passivated；
(3), using the protein supernatant in the sludge after ultrasonic wave and the passivation of papain combined extracting
(31), the sludge after being passivated obtained in step (2) is put into ultrasonic cell disruption instrument and carries out ultrasound, passed through
The mechanical energy of ultrasonic wave destroys the cell wall structure of microbial cell surface densification, wherein ultrasonic power 180W, ultrasonic time
For 40min；
(32), the Papain of 0.04g/gTSS is added thereto according to butt matter quality in the sludge in step (31)
Enzyme, and be put into constant temperature oscillator and reaction is hydrolyzed, wherein the revolving speed of constant temperature oscillator is 160r/min, and hydrolysis temperature is
It 60 DEG C, hydrolysis time 5h, is placed in boiling water after the completion of hydrolysis and inactivates 15min, later, cooling sludge puts centrifuge centrifugation into
20min abandons precipitating, obtains the low protein supernatant of content of beary metal.
Embodiment 2
The method of content of beary metal, includes the following steps: in the protein supernatant extracted in a kind of reduction sludge
(1), modified passivator
Sepiolite is chosen as passivator, and is subject to modification, method of modifying is as follows:
It is modified to carry out acid to sepiolite: after physical purification sepiolite, it is 5% that volumetric concentration, which is added, by solid-liquid mass ratio 1:15
Hydrochloric acid, 1h is stirred at 70 DEG C, filter cake is retained after suction filtration, then at 110 DEG C dry 12h after take out, be crushed after, changed
Property sepiolite；
(2), the heavy metal in modified passivator passivation sludge is utilized
0.1g/gTSS modified meerschaum is added to secondary settling tank sludge according to butt matter quality in sludge, and (moisture content is
90%) it in, stirs evenly, is passivated 14 days at room temperature, the sludge after being passivated；
(3), using the protein supernatant in the sludge after ultrasonic wave and the passivation of papain combined extracting
(31), the sludge after being passivated obtained in step (2) is put into ultrasonic cell disruption instrument and carries out ultrasound, passed through
The mechanical energy of ultrasonic wave destroys the cell wall structure of microbial cell surface densification, wherein ultrasonic power 180W, ultrasonic time
For 40min；
(32), the Papain of 0.04g/gTSS is added thereto according to butt matter quality in the sludge in step (31)
Enzyme, and be put into constant temperature oscillator and reaction is hydrolyzed, wherein the revolving speed of constant temperature oscillator is 160r/min, and hydrolysis temperature is
It 60 DEG C, hydrolysis time 5h, is placed in boiling water after the completion of hydrolysis and inactivates 15min, later, cooling sludge puts centrifuge centrifugation into
20min abandons precipitating, obtains the low protein supernatant of content of beary metal.
Embodiment 3
The method of content of beary metal, includes the following steps: in the protein supernatant extracted in a kind of reduction sludge
(1), modified passivator
Sepiolite and flyash are chosen as passivator, and is subject to modification, method of modifying is as follows:
Alkali modification is carried out to flyash: flyash being uniformly mixed in mass ratio for 5:6 with sodium hydroxide, and gained is mixed
Object is closed in Muffle furnace with 500 DEG C of temperature calcination, mixture taking-up is cooled down after roasting 2h, powder is then ground to, obtains
Modified coal ash；
It is modified to carry out acid to sepiolite: after physical purification sepiolite, it is 5% that volumetric concentration, which is added, by solid-liquid mass ratio 1:15
Hydrochloric acid, 2h is stirred at 65 DEG C, filter cake is retained after suction filtration, then at 110 DEG C dry 13h after take out, be crushed after, changed
Property sepiolite；
(2), the heavy metal in modified passivator passivation sludge is utilized
The mixture of 0.1g/gTSS modified coal ash and modified meerschaum is added to two according to butt matter quality in sludge
It in heavy pond sludge (moisture content 80%), stirs evenly, is passivated 12 days at room temperature, the sludge after being passivated, wherein is modified
The mass ratio of flyash and modified meerschaum is 1:3；
(3), using the protein supernatant in the sludge after ultrasonic wave and the passivation of papain combined extracting
(31), the sludge after being passivated obtained in step (2) is put into ultrasonic cell disruption instrument and carries out ultrasound, passed through
The mechanical energy of ultrasonic wave destroys the cell wall structure of microbial cell surface densification, wherein ultrasonic power 180W, ultrasonic time
For 35min；
(32), the Papain of 0.04g/gTSS is added thereto according to butt matter quality in the sludge in step (31)
Enzyme, and be put into constant temperature oscillator and reaction is hydrolyzed, wherein the revolving speed of constant temperature oscillator is 140r/min, and hydrolysis temperature is
It 50 DEG C, hydrolysis time 6h, is placed in boiling water after the completion of hydrolysis and inactivates 10min, later, cooling sludge puts centrifuge centrifugation into
30min abandons precipitating, obtains the low protein supernatant of content of beary metal.
Embodiment 4
The method of content of beary metal, includes the following steps: in the protein supernatant extracted in a kind of reduction sludge
(1), modified passivator
Sepiolite and flyash are chosen as passivator, and is subject to modification, method of modifying is as follows:
Alkali modification is carried out to flyash: flyash being uniformly mixed in mass ratio for 5:6 with sodium hydroxide, and gained is mixed
Object is closed in Muffle furnace with 550 DEG C of temperature calcination, mixture taking-up is cooled down after roasting 1h, powder is then ground to, obtains
Modified coal ash；
It is modified to carry out acid to sepiolite: after physical purification sepiolite, volumetric concentration, which is added, by solid-liquid mass ratio ratio 1:15 is
5% hydrochloric acid stirs 1h at 70 DEG C, filter cake is retained after suction filtration, takes out after then drying 12h at 110 DEG C, after being crushed, obtains
To modified meerschaum；
(2), the heavy metal in modified passivator passivation sludge is utilized
The mixture of 0.1g/gTSS modified coal ash and modified meerschaum is added to two according to butt matter quality in sludge
It in heavy pond sludge (moisture content 80%), stirs evenly, is passivated 14 days at room temperature, the sludge after being passivated, wherein is modified
The mass ratio of flyash and modified meerschaum is 1:1；
(3), using the protein supernatant in the sludge after ultrasonic wave and the passivation of papain combined extracting
(31), the sludge after being passivated obtained in step (2) is put into ultrasonic cell disruption instrument and carries out ultrasound, passed through
The mechanical energy of ultrasonic wave destroys the cell wall structure of microbial cell surface densification, wherein ultrasonic power 180W, ultrasonic time
For 40min；
(32), the Papain of 0.04g/gTSS is added thereto according to butt matter quality in the sludge in step (31)
Enzyme, and be put into constant temperature oscillator and reaction is hydrolyzed, wherein the revolving speed of constant temperature oscillator is 160r/min, and hydrolysis temperature is
It 60 DEG C, hydrolysis time 5h, is placed in boiling water after the completion of hydrolysis and inactivates 15min, later, cooling sludge puts centrifuge centrifugation into
20min abandons precipitating, obtains the low protein supernatant of content of beary metal.
Embodiment 5
The method of content of beary metal, includes the following steps: in the protein supernatant extracted in a kind of reduction sludge
(1), modified passivator
Sepiolite and flyash are chosen as passivator, and is subject to modification, method of modifying is as follows:
Alkali modification is carried out to flyash: flyash being uniformly mixed in mass ratio for 5:6 with sodium hydroxide, and gained is mixed
Object is closed in Muffle furnace with 600 DEG C of temperature calcination, mixture taking-up is cooled down after roasting 1h, powder is then ground to, obtains
Modified coal ash；
It is modified to carry out acid to sepiolite: after physical purification sepiolite, it is 5% that volumetric concentration, which is added, by solid-liquid mass ratio 1:15
Hydrochloric acid, 1h is stirred at 75 DEG C, filter cake is retained after suction filtration, then at 120 DEG C dry 11h after take out, be crushed after, changed
Property sepiolite；
(2), the heavy metal in modified passivator passivation sludge is utilized
The mixture of 0.1g/gTSS modified coal ash and modified meerschaum is added to two according to butt matter quality in sludge
It in heavy pond sludge (moisture content 70%), stirs evenly, is passivated 15 days at room temperature, the sludge after being passivated, wherein is modified
The mass ratio of flyash and modified meerschaum is 3:1；
(3), using the protein supernatant in the sludge after ultrasonic wave and the passivation of papain combined extracting
(31), the sludge after being passivated obtained in step (2) is put into ultrasonic cell disruption instrument and carries out ultrasound, passed through
The mechanical energy of ultrasonic wave destroys the cell wall structure of microbial cell surface densification, wherein ultrasonic power 200W, ultrasonic time
For 50min；
(32), the Papain of 0.04g/gTSS is added thereto according to butt matter quality in the sludge in step (31)
Enzyme, and be put into constant temperature oscillator and reaction is hydrolyzed, wherein the revolving speed of constant temperature oscillator is 160r/min, and hydrolysis temperature is
It 70 DEG C, hydrolysis time 4h, is placed in boiling water after the completion of hydrolysis and inactivates 20min, later, cooling sludge puts centrifuge centrifugation into
20min abandons precipitating, obtains the low protein supernatant of content of beary metal.
Embodiment 6
Protein supernatant obtained in Example 1 to 5 respectively, detects its protein concentration using Lowry method, uses
ICP-AES detects content of beary metal in protein supernatant, by comparing with raw sewage, as a result obtains: being proposed using the present invention
Method extract sludge in protein supernatant in protein content be all larger than 90mg/gTSS, meanwhile, egg can be reduced
Content of beary metal in white matter supernatant, detailed results see the table below.
The above is only the preferred embodiment of technical solution of the present invention, is not made in any form to the present invention
Limitation, any simple modification, equivalent change and modification to the above embodiments according to the technical essence of the invention, still
Belong in the range of technical solution of the present invention.
Claims (5)
1. a kind of method for reducing content of beary metal in the protein supernatant extracted in sludge, which is characterized in that including as follows
Step:
(1), modified passivator
It chooses at least one of sepiolite and flyash and is used as passivator, and be subject to modification, method of modifying is as follows:
Alkali modification is carried out to flyash: flyash being uniformly mixed in mass ratio for 5:6 with sodium hydroxide, and by gained mixture
With 500 DEG C~600 DEG C of temperature calcination in Muffle furnace, mixture taking-up is cooled down after roasting 1~2h, is then ground to powder
End obtains modified coal ash；
It is modified that acid is carried out to sepiolite: after physical purification sepiolite, the salt that volumetric concentration is 5% is added by solid-liquid mass ratio 1:15
Acid stirs 1~2h at 65~75 DEG C, retains filter cake after suction filtration, takes out after then drying 11~13h at 110~120 DEG C,
After broken, modified meerschaum is obtained；
(2), the heavy metal in modified passivator passivation sludge is utilized
It is added in secondary settling tank sludge, is stirred evenly according to the passivator that 0.1g/gTSS has been modified by butt matter quality in sludge,
It is passivated 12~15 days at room temperature, the sludge after being passivated；
Wherein, the good passivator of the modification are as follows:
The mixture of modified coal ash or modified meerschaum or modified coal ash and modified meerschaum in step (1), wherein when
When the passivator being modified is the mixture of modified coal ash and modified meerschaum, the quality of modified coal ash and modified meerschaum
Than for 1:3~3:1；
(3), using the protein supernatant in the sludge after ultrasonic wave and the passivation of papain combined extracting
(31), the sludge after being passivated obtained in step (2) is put into ultrasonic cell disruption instrument and carries out ultrasound, pass through ultrasound
The mechanical energy of wave destroys the cell wall structure of microbial cell surface densification, wherein ultrasonic power is 180~200W, when ultrasonic
Between be 35~50min；
(32), the papain of 0.04g/gTSS is added thereto according to butt matter quality in the sludge in step (31), and
It is put into constant temperature oscillator and reaction is hydrolyzed, hydrolysis temperature is 50~70 DEG C, and hydrolysis time is 4~6h, is put after the completion of hydrolysis
10~20min is inactivated in boiling water, later, cooling sludge puts centrifuge into and is centrifuged 20~30min, abandons precipitating, obtains a huge sum of money
Belong to the low protein supernatant of content.
2. the method described in accordance with the claim 1 for reducing content of beary metal in the protein supernatant extracted in sludge, special
Sign is: during carrying out alkali modification to flyash in step (1), maturing temperature of the gained mixture in Muffle furnace is
550 DEG C, calcining time 1h；During carrying out sour be modified to sepiolite, whipping temp is 70 DEG C, mixing time 1h, is dried
Dry temperature is 110 DEG C, drying time 12h.
3. the method described in accordance with the claim 1 for reducing content of beary metal in the protein supernatant extracted in sludge, special
Sign is: in step (2), passivation time is 14 days.
4. the method described in accordance with the claim 1 for reducing content of beary metal in the protein supernatant extracted in sludge, special
Sign is: in step (31), ultrasonic power 180W, ultrasonic time 40min.
5. the method described in accordance with the claim 1 for reducing content of beary metal in the protein supernatant extracted in sludge, special
Sign is: in step (32), the revolving speed of constant temperature oscillator is 160r/min, and hydrolysis temperature is 60 DEG C, hydrolysis time 5h, inactivation
Time is 15min, centrifugation time 20min.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109607992A (en) * | 2019-01-28 | 2019-04-12 | 沈阳航空航天大学 | The sludge hydro-thermal treatment method of heavy metal in a kind of reduction water phase |
| CN113045156A (en) * | 2021-03-16 | 2021-06-29 | 山西农业大学 | Method for anaerobic treatment of livestock and poultry manure |
| CN114772883A (en) * | 2022-05-16 | 2022-07-22 | 中国矿业大学 | Treatment method of black and odorous water body bottom mud and application of black and odorous water body bottom mud in preparation of baking-free bricks |
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| CN109607992A (en) * | 2019-01-28 | 2019-04-12 | 沈阳航空航天大学 | The sludge hydro-thermal treatment method of heavy metal in a kind of reduction water phase |
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| CN113045156A (en) * | 2021-03-16 | 2021-06-29 | 山西农业大学 | Method for anaerobic treatment of livestock and poultry manure |
| CN113045156B (en) * | 2021-03-16 | 2022-06-21 | 山西农业大学 | Method for anaerobic treatment of livestock and poultry manure |
| CN114772883A (en) * | 2022-05-16 | 2022-07-22 | 中国矿业大学 | Treatment method of black and odorous water body bottom mud and application of black and odorous water body bottom mud in preparation of baking-free bricks |
| CN114772883B (en) * | 2022-05-16 | 2023-09-05 | 中国矿业大学 | Treatment method of black and odorous water body substrate sludge and application of black and odorous water body substrate sludge in preparation of baking-free bricks |
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