CN107585982A - The recovery of albumen and phosphorus and reduced sugar conversion treatment device and method in municipal sludge - Google Patents
The recovery of albumen and phosphorus and reduced sugar conversion treatment device and method in municipal sludge Download PDFInfo
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- CN107585982A CN107585982A CN201710974659.0A CN201710974659A CN107585982A CN 107585982 A CN107585982 A CN 107585982A CN 201710974659 A CN201710974659 A CN 201710974659A CN 107585982 A CN107585982 A CN 107585982A
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- sludge
- stainless steel
- phosphorus
- steel cask
- albumen
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- 239000010802 sludge Substances 0.000 title claims abstract description 114
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 49
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 239000011574 phosphorus Substances 0.000 title claims abstract description 44
- 229910052698 phosphorus Inorganic materials 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000011084 recovery Methods 0.000 title claims abstract description 13
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 61
- 239000010935 stainless steel Substances 0.000 claims abstract description 61
- 239000007788 liquid Substances 0.000 claims abstract description 58
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 claims abstract description 27
- 229960001545 hydrotalcite Drugs 0.000 claims abstract description 27
- 229910001701 hydrotalcite Inorganic materials 0.000 claims abstract description 27
- 238000012545 processing Methods 0.000 claims abstract description 24
- 108090000623 proteins and genes Proteins 0.000 claims abstract description 19
- 102000004169 proteins and genes Human genes 0.000 claims abstract description 19
- 108010059892 Cellulase Proteins 0.000 claims abstract description 8
- 229940106157 cellulase Drugs 0.000 claims abstract description 8
- 238000001976 enzyme digestion Methods 0.000 claims description 26
- 238000001035 drying Methods 0.000 claims description 21
- 239000007787 solid Substances 0.000 claims description 16
- 239000000523 sample Substances 0.000 claims description 15
- 239000000243 solution Substances 0.000 claims description 15
- 238000003795 desorption Methods 0.000 claims description 14
- 230000009471 action Effects 0.000 claims description 7
- 238000001179 sorption measurement Methods 0.000 claims description 7
- 238000002604 ultrasonography Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 6
- 150000001768 cations Chemical class 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 239000003814 drug Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 6
- 239000006228 supernatant Substances 0.000 claims description 6
- 239000006210 lotion Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 4
- 238000006460 hydrolysis reaction Methods 0.000 claims description 4
- 229910001051 Magnalium Inorganic materials 0.000 claims description 3
- 238000004458 analytical method Methods 0.000 claims description 3
- -1 is then added Proteins 0.000 claims description 3
- 229910001510 metal chloride Inorganic materials 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 claims description 3
- 238000010979 pH adjustment Methods 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims description 3
- 239000013049 sediment Substances 0.000 claims description 3
- 238000002525 ultrasonication Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 229910019142 PO4 Inorganic materials 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 238000000227 grinding Methods 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 2
- 239000010452 phosphate Substances 0.000 claims description 2
- 239000002893 slag Substances 0.000 claims description 2
- 238000007689 inspection Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 13
- 238000005336 cracking Methods 0.000 abstract description 10
- 238000004064 recycling Methods 0.000 abstract description 9
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 239000013043 chemical agent Substances 0.000 abstract description 4
- 239000012141 concentrate Substances 0.000 abstract description 2
- 239000001913 cellulose Substances 0.000 description 7
- 229920002678 cellulose Polymers 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
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- 239000010865 sewage Substances 0.000 description 4
- 108090000790 Enzymes Proteins 0.000 description 3
- 102000004190 Enzymes Human genes 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000002255 enzymatic effect Effects 0.000 description 3
- 229940088598 enzyme Drugs 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 2
- XLYOFNOQVPJJNP-ZSJDYOACSA-N Heavy water Chemical compound [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 150000001450 anions Chemical class 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
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- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- 108010088842 Fibrinolysin Proteins 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- YUWBVKYVJWNVLE-UHFFFAOYSA-N [N].[P] Chemical compound [N].[P] YUWBVKYVJWNVLE-UHFFFAOYSA-N 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
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- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
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Abstract
The recovery of albumen and phosphorus and reduced sugar conversion treatment device and method in municipal sludge disclosed by the invention, belong to excess sludge processing equipment technical field.By the synergy of ultrasonic cavitation and chemical agent, reach the effect for efficiently cracking domestic sludge.Sludge disintegration liquid enters the vertical stainless steel cask equipped with houghite filter, by strong suction-operated of the houghite to phosphorus, obtains the phosphorus cracked in liquid；Then dephosphorization cracks liquid and entered back into the stainless steel cask equipped with hydrotalcite filter, and by hydrotalcite and the stronger affinity of albumen, acquisition cracks albumen in liquid.The phosphorus of absorption and albumen desorb to obtain phosphorus concentrate and protein concentrated solution again by the stripping liquid each added in filter.In the presence of cellulase and sludge protein, reduced sugar is made.The present invention can not only realize the high-efficiency resource recycling for effectively cracking the minimizing processing for reaching sludge, can also realizing domestic sludge of domestic sludge.
Description
Technical field
The invention belongs to excess sludge processing equipment technical field, and in particular to albumen and phosphorus in a kind of municipal sludge
Recovery and reduced sugar conversion treatment device and method.
Background technology
Domestic sludge be town domestic sewage treatment plant caused by sludge, be a kind of complicated component, yield is big, disposal is difficult
Solid waste.At this stage, the phenomenon of the construction generally existing " the light mud of heavy water " of wastewater treatment in China factory, with the whole country
Carrying forward vigorously for dirty emission reduction work is dropped, and town sewage facility for the central disposal is continuously increased, sludge yield continuous enlargement, sludge
Effectively processing disposal is very urgent.
Sanitary sewage is mainly derived from life of urban resident and adequate and systematic service industry drainage system, pollutant component are relatively single
One, predominantly organic matter (protein, carbohydrate, urea, fat and surfactant), inorganic matter (including nitrogen, phosphorus with
And inorganic salts) etc.；The content of heavy metal and inorganic noxious material (arsenic, cyanide) is few, therefore is formed in sewage disposal process
Domestic sludge nutriment (nitrogen phosphorus etc.) rich content, the content of organic matter it is high (contents on dry basis >=45%), heavy metal and inorganic
Levels of toxic substances is low.Therefore, the great recycling value of domestic sludge.
Traditional method for sludge treatment such as throws sea, landfill can all cause serious pollution to environment.At present, on life
The research report of recycling sludge is also a lot, and all achieves significant effect, certain using providing for recycling sludge
Theoretical direction and technical support.But domestic sludge resources development and utilization rate is not high in reality, research report is most of only
It is the wherein a certain utility (phosphorus in such as single extraction sludge protein or single acquisition sludge) of independent acquisition, causes exploitation
During other resources loss.
The content of the invention
It is an object of the invention to provide the recovery of albumen and phosphorus in a kind of municipal sludge and reduced sugar conversion processing
Device and method, the apparatus structure is reasonable in design, easy to use, can realize the recycling of albumen and phosphorus in domestic sludge with
And the conversion processing of the resource such as cellulose, significantly improve domestic sludge resource utilization rate.
The present invention is to be achieved through the following technical solutions：
The recovery of albumen and phosphorus and reduced sugar conversion treatment device in a kind of municipal sludge, including it is reactor, dry sleeping
Formula centrifuge, vertical stainless steel cask, horizontal stainless steel cask and enzyme digestion reaction tank；
Domestic sludge is provided with the first ball valve and the first centrifugal pump by Pipeline transport to reactor on the pipeline；Reaction
The discharging opening of kettle is connected by pipeline with horizontal centrifuge, and the second ball valve and the second centrifugal pump are provided with the pipeline；It is horizontal from
The liquid outlet of scheming is connected by pipeline with vertical stainless steel cask, and the 3rd ball valve, vertical stainless steel cask are provided with the pipeline
It is connected by pipeline with horizontal stainless steel cask, the 4th ball valve is provided with the pipeline；The solid outlet of horizontal centrifuge passes through pipe
Road is connected with enzyme digestion reaction tank, and the 5th ball valve and the 3rd centrifugal pump are provided with the pipeline；The liquid outlet of horizontal stainless steel cask
And sludge outlet is connected to enzyme digestion reaction tank by pipeline respectively, it is provided with the pipeline that liquid outlet is connected with enzyme digestion reaction tank
6th ball valve；
Also include the ultrasound unit being connected with reactor, dosing mouth is additionally provided with the top of reactor；In vertical stainless steel
If being filled with dried layer in bucket is capable of the houghite filter of Phosphate Sorption, if dried layer is filled with horizontal stainless steel cask to inhale
The hydrotalcite filter of attached albumen；The 1# stripping liquid entrances of desorption phosphorus are provided with vertical stainless steel cask, are set on horizontal stainless steel cask
There are the 2# stripping liquid entrances of desorption albumen.
Preferably, the ultrasound unit, by stretching into ultrasonic probe in reactor and being connected with ultrasonic probe
Supersonic generator forms.
Preferably, in addition to it is sequentially arranged on the pipeline that the solid outlet in horizontal centrifuge is connected with enzyme digestion reaction tank
Drier and pulverizer.
Preferably, in addition to the temperature-controlling module that is arranged on outside horizontal stainless steel cask, the temperature-controlling module is by heating
Device and coupled temperature controller composition.
Preferably, in addition to the pH adjustment units of liquid pH value in reactor, including pH meter, the probe of pH meter can be adjusted
Stretch into reactor.
Preferably, sample tap and agitating device are provided with enzyme digestion reaction tank.
The invention also discloses the method using said apparatus processing municipal sludge, comprise the following steps：
1) open the first ball valve and the first centrifugal pump, domestic sludge are transported in reactor, open dosing mouth addition medicine
Agent, then start ultrasound unit and ultrasonication is carried out to sludge；
2) after sludge fully cracks, open the second ball valve and the second centrifugal pump, breaking sludge solution enter horizontal centrifugal
In machine, separation of solid and liquid is carried out, under the action of the centrifugal force, solid body refuse separates with sludge supernatant；
3) the 3rd ball valve is started, sludge disintegration liquid enters in vertical stainless steel cask, in the presence of houghite filter,
Phosphorus is adsorbed；Then the 4th ball valve is started, sludge disintegration liquid enters in horizontal stainless steel cask, in the effect of hydrotalcite filter
Under, albumen is adsorbed；
4) after the sludge disintegration liquid in vertical stainless steel cask and horizontal stainless steel cask all outflow, respective desorption is passed through
Liquid entrance is separately added into 1# stripping liquids and 2# stripping liquids, in the presence of stripping liquid, obtains phosphorus and protein concentrated solution；
5) vertical stainless steel cask enters in enzyme digestion reaction tank with the sludge disintegration liquid flowed out in horizontal stainless steel cask, opens ball
The ball valve of valve the 5th, the 6th ball valve and the 3rd centrifugal pump, body refuse enter enzyme digestion reaction tank (21) with albumen, then add cellulose
Enzyme, cellulase hydrolysis reaction occur, and obtain reduced sugar.
Preferably, in step 2), solid body refuse is separated with sludge supernatant, and body refuse enters in drier to be carried out at 80 DEG C
Drying process, dried sludge are crushed in pulverizer；In step 5), carried out by the sample tap on enzyme digestion reaction tank
Sampling analysis, judge to react carry out degree.
Preferably, the houghite filter is made by following methods, including step：
(1) choose divalence and contain metal cation Zn2+With trivalent metal cation Al3+Compound, pressed with deionized water
According to Zn2：Al3+=(2.5~3.5)：1 molar ratio pipettes the solution in beaker, adjusted into metal chloride mixed solution
It is 9.5~9.8 to save solution ph, is allowed to that precipitation reaction occurs；
(2) by obtained sediment after 85~93 DEG C of constant temperature are aged 24h, with deionized water repeatedly filtering and washing to nothing
Cl-Detection, lotion is made；
(3) by the drying of gained lotion, grinding, powder is obtained；By gained powder and polyvinyl alcohol in mass ratio 1:It is 3.5 mixed
Close, mixed liquor is made；
(4) some sizable sponges of internal diameter with vertical stainless steel cask are taken, sponge is soaked in mixed liquor, treated
Sponge is taken out after sponge saturation, then in 50 ± 4 DEG C of drying, is soaked repeatedly with identical condition, drying and processing 5 times；Will be last
The sponge of first drying is handled 3 hours in 300 ± 50 DEG C, cooling, houghite filter is made.
Preferably, the hydrotalcite filter is made by following methods, including step：
A, by magnalium hydrotalcite and polyvinyl alcohol according to mass ratio 1:(3~3.5) mix, mixed liquor is made；
B, some and horizontal stainless steel cask internal diameter sizableness sponge are taken, sponge is soaked in mixed liquor, treats sponge
Sponge is taken out after saturation, then in 55 ± 4 DEG C of drying, is soaked, dried 5 times repeatedly with identical condition；Last time is dried
Sponge handled 4 hours in 900 ± 30 DEG C, cooling, hydrotalcite filter is made.
It is tightly connected at total interface involved by package unit by mechanical sealing parts.
Compared with prior art, the present invention has technique effect beneficial below：
Reclaiming city domestic sludge processing unit disclosed by the invention, by the association of ultrasonic cavitation and chemical agent
Same-action, reach the effect for efficiently cracking domestic sludge.Sludge disintegration liquid is initially entered equipped with the vertical of houghite filter
Stainless steel cask, by strong suction-operated of the houghite to phosphorus, obtain the phosphorus cracked in liquid；Then dephosphorization cracks liquid and enters back into dress
In the stainless steel cask for having hydrotalcite filter, by hydrotalcite and the stronger affinity of albumen, the albumen cracked in liquid is obtained.Cross
The phosphorus of absorption and albumen desorb to obtain phosphorus concentrate and protein concentrated solution again by the stripping liquid each added in filter.Due to life
Contain a large amount of lignocellulose biomass in sludge living, ultrasonic disintegration is passed through during present treatment, lignocellulosic unstability can
Cellulose of solubleness enters liquid phase, can not fibrinolysin enter body refuse, two parts cellulose finally enters enzyme digestion reaction tank, in fiber
In the presence of plain enzyme and sludge protein, reduced sugar is made.The present invention can not only realize effectively cracking for domestic sludge, reach dirty
The minimizing processing of mud, the high-efficiency resource recycling (phosphorus, albumen and reduced sugar can be obtained simultaneously) of domestic sludge can also be realized.
Apparatus structure is novel, green, easy to use, efficiency high, remarkable in economical benefits.
Further, in addition to it is sequentially arranged on the pipeline that the solid outlet in horizontal centrifuge is connected with enzyme digestion reaction tank
Drier and pulverizer, reaction mass in horizontal centrifuge after separation of solid and liquid, solid body refuse enter drier in dry,
Body refuse rich in cellulose is crushed after drying in pulverizer, is more favorable for follow-up processing.
Further, because albumen is macromolecular substances, adsorption and desorption is more difficult, can be by horizontal stainless steel cask
Outside sets temperature-controlling module to adjust temperature, to strengthen adsorption and desorption speed.
Further, in addition to the pH adjustment units of liquid pH value in reactor can be adjusted, institute's adding medicine is used only for
The fine setting of pH value, addition is generally less, avoids a large amount of chemical agents and causes the excess destruction of sludge protein into sludge
And follow-up complicated separable programming.
Further, agitating device and sample tap are provided with enzyme digestion reaction tank, agitating device can be carried out to reaction mass
Stirring, is sufficiently mixed each material, accelerates reaction rate.Analysis is sampled by sample tap, preferably judges that reaction is carried out
Degree.
Method disclosed by the invention, it is simple to operate, it is environment-friendly, effectively cracking for domestic sludge can be not only realized, is reached
Minimizing to sludge is handled, and can also realize the high-efficiency resource recycling of domestic sludge (can obtain phosphorus, albumen and reduction simultaneously
Sugar, significantly improve domestic sludge resource utilization rate.
Brief description of the drawings
Fig. 1 is the reclaiming city domestic sludge processing device structure diagram of the present invention.
Wherein：1 is the first ball valve；2 be the first centrifugal pump；3 be reactor；4 be supersonic generator；5 be that ultrasonic wave is visited
Head；6 be pH meter；7 be the second ball valve；8 be the second centrifugal pump；9 be horizontal centrifuge；10 be drier；11 be pulverizer；12 are
5th ball valve；13 be the 3rd centrifugal pump；14 be the 3rd ball valve；15 be vertical stainless steel cask；16 be the 4th ball valve；17 for it is horizontal not
Become rusty steel drum；18 be the 6th ball valve；19 be temperature controller；20 be heater；21 be enzyme digestion reaction tank.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings：
Referring to Fig. 1, reclaiming city domestic sludge processing unit of the invention, including reactor 3, domestic sludge is first
In the presence of centrifugal pump 2, into reactor 3, mud discharge size is adjusted by the first ball valve 1.Ultrasonic wave is provided with reactor 3
Unit, ultrasound unit are made up of supersonic generator 4 and ultrasonic probe 5, can carry out acoustic cavitation effect to domestic sludge；Instead
Material pH value in kettle 3 is answered to be adjusted by dosing mouth addition medicament on reactor, pH value size measures display by pH meter 6.
Efficiently cracking for domestic sludge is realized under acoustic cavitation and chemical cooperated effect, accelerates sludge phosphorus, the rate of release of albumen and dirt
Lignocellulose biomass cracks speed in mud.Domestic sludge after cracking enters horizontal in the presence of the second centrifugal pump 8
Centrifuge 9, carries out separation of solid and liquid, and uninterrupted is adjusted by the second ball valve 7.Supernatant after separation enters vertical stainless steel cask
15, uninterrupted is adjusted by the 3rd ball valve 14, and some layers of self-control houghite filter, sludge are contained in vertical stainless steel cask 15
Release phosphorus is largely adsorbed under hydrotalcite-like materials suction-operated.Then sludge disintegration liquid travels further into horizontal stainless steel cask
In 17, discharge albumen containing some layers of self-control hydrotalcite filter, sludge in horizontal stainless steel cask 17 and adsorbed in hydrotalcite material
Largely adsorbed under effect.Phosphorus after absorption can be obtained with albumen by stripping liquid.The adsorption and desorption speed of albumen can pass through
Temperature controller 19 and heater 20 regulate and control.Lignocellulosic after cracking wherein soluble fibre element part enters sludge liquid, no
Soluble fibre element part enters body refuse, and two parts cellulose enters in enzyme digestion reaction tank 21 (carrying stirring) jointly, in cellulose
Enzymatic saccharification obtains reduced sugar in the presence of enzyme and a small amount of sludge protein.
Preferably, ultrasonic power is in 300~550W, and action time is in 15~35min.
Preferably, if the preparation method of the dried layer houghite filter loaded in vertical stainless steel cask is as follows：Select
Divalent metal Zn2+With trivalent metal cation Al3+, with deionized water according to Zn2/Al3+For (2.5~3.5):1 mole
Than preparing metal chloride mixed solution, the solution is pipetted in beaker, NaOH is added dropwise under 85~93 DEG C of water bath conditions
(1mol/L) is 9.5~9.8 to pH value of solution, is allowed to that precipitation reaction occurs.Obtained sediment is aged 24h in 85~93 DEG C of constant temperature
Afterwards, with deionized water repeatedly filtering and washing to without Cl-Detection.Gained lotion is placed in 85 DEG C of drying in air dry oven, ground,
Gained powder is with polyvinyl alcohol according to mass ratio 1:3.5 mixing, take stainless steel cask internal diameter size sponge some, sponge are soaked in
In mixed liquor, sponge is taken out after sponge saturation, then in 50 ± 4 DEG C of drying, is then soaked in again in mixed liquor, 50 after saturation
± 4 DEG C of drying, 5 times repeatedly；Finally drying sponge is handled 3 hours in 300 ± 50 DEG C, cooling, produces houghite filter
(other commercially available houghite filters that effect of the same race also can be selected).
Further, if the preparation method of the dried layer hydrotalcite filter loaded in horizontal stainless steel cask is as follows：By magnalium
Hydrotalcite is with polyvinyl alcohol according to mass ratio 1:(3~3.5) mix, take stainless steel cask internal diameter size sponge some, sponge is soaked
Steep in mixed liquor, sponge is taken out after sponge saturation, then in 55 ± 4 DEG C of drying, then in mixed liquor is soaked in, saturation
55 ± 4 DEG C of drying afterwards, 5 times repeatedly；Finally drying sponge is handled 4 hours in 900 ± 30 DEG C, cooling, produce hydrotalcite filtering
Device (other commercially available hydrotalcite filters that effect of the same race also can be selected).
The reclaiming city domestic sludge processing unit of the present invention, when in use：
The first ball valve 1 is first turned on, starts the first centrifugal pump 2, domestic sludge is transported in reactor 3, sewage sludge feed
Flow is controlled by adjusting the first ball valve 1, then starts supersonic generator 4 and pH meter 6, opens dosing mouth, addition medicament is extremely
PH value is set, ultrasonication is carried out to sludge, the second ball valve 7 is opened after sludge fully cracks, starts the second centrifugal pump 8,
Breaking sludge solution enters in horizontal centrifuge 9, carries out separation of solid and liquid, under the action of the centrifugal force, solid body refuse and sludge supernatant
Liquid separates, and body refuse enters drier 10, processing (80 DEG C of drying temperature) is dried, dried sludge is carried out in pulverizer 11
Crush.After crushing, start the 3rd ball valve 14, sludge disintegration liquid enters in vertical stainless steel cask 15, in houghite filter
Under effect, phosphorus is adsorbed；Then the 4th ball valve 16 is started, sludge disintegration liquid enters in horizontal stainless steel cask 17, in hydrotalcite mistake
In the presence of filter, albumen is adsorbed；Vertical stainless steel cask 15 and horizontal stainless steel cask 17 after sludge disintegration liquid all outflow,
The 1# stripping liquid entrances of desorption phosphorus are provided with vertical stainless steel cask 15, horizontal stainless steel cask 17 is provided with the 2# desorptions of desorption albumen
Liquid entrance, 1# stripping liquids and 2# stripping liquids are separately added into, in the presence of stripping liquid, obtain phosphorus and protein concentrated solution.It is final dirty
Mud cracks liquid and entered in enzyme digestion reaction tank 21, opens the ball valve 12 of ball valve the 5th, the 6th ball valve 18, starts the 3rd centrifugal pump 13, mud
Slag enters enzyme digestion reaction tank 21 with albumen, then adds cellulase, and cellulase hydrolysis reaction occurs, taken by sample tap
Sample is analyzed, and is judged to react carry out degree, is finally obtained reduced sugar.
The present invention is as follows using the action principle of houghite and hydrotalcite filter：
1st, M in houghite filter3+To M2+Aliquot replacement be that it has one of the main reason for phosphorus absorption property,
Appropriate Al3+Substitute Zn2+The net positive charge of houghite laminate is added, thus causes anion (phosphoric acid between insertion laminate
Root) amount increase therewith.
2nd ,-OH ,-NH are contained in sludge protein molecule2With-SH isopolarities functional group, include and whether there is with horizontal stainless steel cask
The hydrotalcite filter of machine cation and anion has stronger affinity, protein molecular is adsorbed on hydrotalcite material,
The amount of force can be influenceed by lifting temperature, and then realize the control to protein adsorption and desorption rate.
It is because sludge activity albumen can extend fiber that the present invention adds sludge protein in the reaction of sludge cellulase hydrolysis
Plain enzymatic activity, cellulase dosage is reduced, improve sludge-sugared transformation efficiency.
The present invention has advantages below：
1st, the present invention uses domestic sludge as raw material, by ultrasonic wave and chemical action, cracks domestic sludge, discharges sludge
Phosphorus and protein, breaking sludge lignocellulosic.Into aqueous phase sludge phosphorus and albumen by stainless steel cask, in stainless steel cask
Houghite is with the presence of hydrotalcite filter, largely being adsorbed, then obtain phosphorus and protein concentrated solution through stripping liquid desorption.
Lignocellulosic after cracking carries out enzymatic saccharification reaction in enzyme digestion reaction tank, obtains reduced sugar.The device has reached life
The minimizing of sludge, phosphorus, albumen and reduced sugar are obtained again, is to achieve many things at one stroke.
2nd, the present invention does not have to add substantial amounts of chemical agent in domestic sludge processing procedure, only adds a small amount of medicament and enters
The fine setting of row sludge pH, reach efficiently cracking for sludge by ultrasonic wave and chemical action, the sludge protein molecule of acquisition is broken
Bad degree is low, and the recovery of sludge phosphorus and albumen is realized using the effect of the adsorption and desorption of houghite and hydrotalcite, without complexity
Separable programming, purity is higher, and environmental pollution is light, and houghite and hydrotalcite filter are repeatable utilizes, process economy
Remarkable benefit.
3rd, the device can realize minimizing processing and the recycling of domestic sludge, phosphorus, albumen and the reduction of acquisition
Sugar can increase the economic benefit of the processing procedure again, significantly reduce processing cost, the device has accomplished the decrement of domestic sludge
Change, recycling, stabilization processes, the energetically corresponding call of national energy-saving emission reduction.
Claims (10)
1. the recovery of albumen and phosphorus and reduced sugar conversion treatment device in a kind of municipal sludge, it is characterised in that including anti-
Answer kettle (3), dry horizontal centrifuge (9), vertical stainless steel cask (15), horizontal stainless steel cask (17) and enzyme digestion reaction tank (21)；
Domestic sludge is provided with the first ball valve (1) and the first centrifugal pump (2) by Pipeline transport to reactor (3) on the pipeline；
The discharging opening of reactor (3) is connected by pipeline with horizontal centrifuge (9), and the second ball valve (7) and second are provided with the pipeline
Centrifugal pump (8)；The liquid outlet of horizontal centrifuge (9) is connected by pipeline with vertical stainless steel cask (15), is set on the pipeline
There is the 3rd ball valve (14), vertical stainless steel cask (15) is connected with horizontal stainless steel cask (17) by pipeline, is provided with the pipeline
4th ball valve (16)；The solid outlet of horizontal centrifuge (9) is connected by pipeline with enzyme digestion reaction tank (21), is set on the pipeline
There are the 5th ball valve (12) and the 3rd centrifugal pump (13)；The liquid outlet and sludge outlet of horizontal stainless steel cask (17) pass through pipe respectively
Road is connected to enzyme digestion reaction tank (21), and the 6th ball valve (18) is provided with the pipeline that liquid outlet is connected with enzyme digestion reaction tank；
Also include the ultrasound unit being connected with reactor (3), dosing mouth is additionally provided with the top of reactor (3)；Vertical stainless
Steel drum (15) if in be filled with the houghite filter that dried layer is capable of Phosphate Sorption, in horizontal stainless steel cask (17) if in be filled with
Dried layer is capable of the hydrotalcite filter of adhesion protein；The 1# stripping liquid entrances of desorption phosphorus are provided with vertical stainless steel cask (15), are crouched
Formula stainless steel cask (17) is provided with the 2# stripping liquid entrances of desorption albumen.
2. the recovery of albumen and phosphorus and reduced sugar conversion treatment device in municipal sludge according to claim 1, its
It is characterised by, the ultrasound unit, by stretching into ultrasonic probe (5) in reactor (3) and being connected with ultrasonic probe (5)
Supersonic generator (4) composition.
3. the recovery of albumen and phosphorus and reduced sugar conversion treatment device in the municipal sludge according to right wants 1, it is special
Sign is, in addition to is sequentially arranged on the pipeline that the solid outlet in horizontal centrifuge (9) is connected with enzyme digestion reaction tank (21)
Drier (10) and pulverizer (11).
4. the recovery of albumen and phosphorus and reduced sugar conversion treatment device in the municipal sludge according to right wants 1, it is special
Sign is, in addition to is arranged on the temperature-controlling module of horizontal stainless steel cask (17) outside, and the temperature-controlling module is by heater
(20) and coupled temperature controller (19) forms.
5. the recovery of albumen and phosphorus and reduced sugar conversion in the municipal sludge according to right wants any one in 1~4
Processing unit, it is characterised in that also include the pH adjustment units that can adjust reactor (3) interior liquid pH value, including pH meter
(6), the probe of pH meter (6) is stretched into reactor (3).
6. the recovery of albumen and phosphorus and reduced sugar conversion in the municipal sludge according to right wants any one in 1~4
Processing unit, it is characterised in that sample tap and agitating device are provided with enzyme digestion reaction tank (21).
7. using the method for the device processing municipal sludge described in any one in claim 1~6, it is characterised in that
Comprise the following steps：
1) open the first ball valve (1) and the first centrifugal pump (2), domestic sludge are transported in reactor (3), open dosing mouth and add
Adding medicine, then start ultrasound unit and ultrasonication is carried out to sludge；
2) after sludge fully cracks, open the second ball valve (7) and the second centrifugal pump (8), breaking sludge solution into it is horizontal from
In scheming (9), separation of solid and liquid is carried out, under the action of the centrifugal force, solid body refuse separates with sludge supernatant；
3) the 3rd ball valve (14) is started, sludge disintegration liquid enters in vertical stainless steel cask (15), in the work of houghite filter
Under, phosphorus is adsorbed；Then the 4th ball valve (16) is started, sludge disintegration liquid enters in horizontal stainless steel cask (17), in hydrotalcite
In the presence of filter, albumen is adsorbed；
4) after the sludge disintegration liquid in vertical stainless steel cask (15) and horizontal stainless steel cask (17) all outflow, by respective
Stripping liquid entrance is separately added into 1# stripping liquids and 2# stripping liquids, in the presence of stripping liquid, obtains phosphorus and protein concentrated solution；
5) vertical stainless steel cask (15) and the sludge disintegration liquid of outflow in horizontal stainless steel cask (17) enter enzyme digestion reaction tank (21)
In, the ball valve (12) of ball valve the 5th, the 6th ball valve (18) and the 3rd centrifugal pump (13) are opened, body refuse enters enzyme digestion reaction tank with albumen
(21) cellulase, is then added, cellulase hydrolysis reaction occurs, and obtains reduced sugar.
8. according to the method for claim 7, it is characterised in that in step 2), solid body refuse separates with sludge supernatant, mud
Slag enters in drier (10) is dried processing at 80 DEG C, and dried sludge is crushed in pulverizer (11)；Step
It is rapid 5) in, analysis is sampled by the sample tap on enzyme digestion reaction tank (21), judge react carry out degree.
9. according to the method for claim 7, it is characterised in that the houghite filter is made by following methods, bag
Include step：
(1) choose divalence and contain metal cation Zn2+With trivalent metal cation Al3+Compound, with deionized water according to
Zn2：Al3+=(2.5~3.5)：1 molar ratio pipettes the solution in beaker, adjusted into metal chloride mixed solution
Solution ph is 9.5~9.8, is allowed to that precipitation reaction occurs；
(2) by obtained sediment after 85~93 DEG C of constant temperature are aged 24h, with deionized water repeatedly filtering and washing to without Cl-Inspection
Go out, lotion is made；
(3) by the drying of gained lotion, grinding, powder is obtained；By gained powder and polyvinyl alcohol in mass ratio 1:3.5 mixing, system
Obtain mixed liquor；
(4) some sizable sponges of internal diameter with vertical stainless steel cask are taken, sponge is soaked in mixed liquor, treats sponge
Sponge is taken out after saturation, then in 50 ± 4 DEG C of drying, is soaked repeatedly with identical condition, drying and processing 5 times；Will last time
The sponge of drying is handled 3 hours in 300 ± 50 DEG C, cooling, houghite filter is made.
10. according to the method for claim 7, it is characterised in that the hydrotalcite filter is made by following methods, including
Step：
A, by magnalium hydrotalcite and polyvinyl alcohol according to mass ratio 1:(3~3.5) mix, mixed liquor is made；
B, some and horizontal stainless steel cask internal diameter sizableness sponge are taken, sponge is soaked in mixed liquor, treats sponge saturation
After take out sponge, then in 55 ± 4 DEG C drying, soaked, dried 5 times repeatedly with identical condition；By the sea of last time drying
It is continuous to be handled 4 hours in 900 ± 30 DEG C, cooling, hydrotalcite filter is made.
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| CN109320012A (en) * | 2018-10-26 | 2019-02-12 | 首创爱华(天津)市政环境工程有限公司 | A kind of municipal sewage system and method |
| CN110776925A (en) * | 2019-11-20 | 2020-02-11 | 榆林学院 | Water-retaining agent prepared from excess sludge, and preparation method and application method thereof |
| CN113248089A (en) * | 2021-06-25 | 2021-08-13 | 山东建筑大学 | Residual sludge phosphorus digestion and dissolution coupled phosphate recovery device and sludge treatment method |
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| CN107585982B (en) | 2023-12-01 |
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