CN107032575A - Method for sludge treatment - Google Patents
Method for sludge treatment Download PDFInfo
- Publication number
- CN107032575A CN107032575A CN201710198568.2A CN201710198568A CN107032575A CN 107032575 A CN107032575 A CN 107032575A CN 201710198568 A CN201710198568 A CN 201710198568A CN 107032575 A CN107032575 A CN 107032575A
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- Prior art keywords
- cell compartment
- sludge
- sludge treatment
- guanite
- short distance
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
- C02F11/04—Anaerobic treatment; Production of methane by such processes
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/45—Phosphates containing plural metal, or metal and ammonium
- C01B25/451—Phosphates containing plural metal, or metal and ammonium containing metal and ammonium
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P3/00—Preparation of elements or inorganic compounds except carbon dioxide
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/59—Biological synthesis; Biological purification
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Zoology (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Wood Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Microbiology (AREA)
- Biochemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Biotechnology (AREA)
- Hydrology & Water Resources (AREA)
- Molecular Biology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Water Supply & Treatment (AREA)
- Bioinformatics & Cheminformatics (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Genetics & Genomics (AREA)
- Inorganic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a kind of method for sludge treatment, the inside division of sludge treatment equipment is sludge fermentation cell compartment and short distance nitration cell compartment by the baffle plate, leaving certain gaps uncovered by the economic plan between the top of the baffle plate and sludge treatment equipment, guanite is provided with the top of the sludge fermentation cell compartment and reclaims cell compartment, the guanite reclaims cell compartment and connected with the breach, pH regulation cell compartments are provided with the top of the short distance nitration cell compartment, the pH regulations cell compartment is connected with the breach, the pH regulations cell compartment offers outlet in the side relative with the breach, the height of the outlet is less than the height of the breach.The present invention greatly reduce excess sludge processing cost and processing after in sludge accessory substance carbon nitrogen P elements surplus；Also the floor space of sludge treatment device is greatly reduced.Moreover, adding the energy (methane) and resource (guanite and nitrous acid) recovery on the basis of sludge treatment technique, the process changeover for making to need consuming cost originally is the technique for having economic well-being of workers and staff.
Description
Technical field
The present invention relates to technical field of sewage, more particularly to a kind of Treatment of Sludge of energy resource recycling type
Method.
Background technology
At present, in city domestic sewage processing procedure, substantial amounts of excess sludge can be produced, if processing is mishandling,
Then it is easy to produce secondary pollution.Such as excess sludge is concentrated and stacked, larger pollution can be produced to the soil for stacking ground, together
When also have the possibility of polluted underground water.
Therefore, existing excess sludge processing method comes with some shortcomings, and result in the handling rate of sewage plant excess sludge
Very low, these are not enough mainly including following：
1) processing cost is too high, and some processing costs are even more than the 50% of whole sewage plant operation cost；
2) handling process falls behind, and easily produces secondary pollution；
3) sewage-treatment plant floor space is larger, causes to be completed sewage treatment plant without remaining land development Treatment of Sludge
Device；
4) content of carbon nitrogen phosphorus is still very high in poor processing effect, the excess sludge after processing, still with larger potential
Contaminative and harmfulness.
The content of the invention
In view of this, it is an object of the invention to propose a kind of method for sludge treatment, to solve the skill of prior art presence
Art problem.
Based on above-mentioned purpose, the method for sludge treatment that the present invention is provided is carried out at sludge using following sludge treatment equipment
Reason, sets baffle plate inside sludge treatment equipment, the baffle plate by the inside division of sludge treatment equipment be sludge fermentation cell compartment and
Leaving certain gaps uncovered by the economic plan between short distance nitration cell compartment, the top of the baffle plate and sludge treatment equipment, the top of the sludge fermentation cell compartment
It is provided with guanite and reclaims cell compartment, the guanite reclaims cell compartment and connected with the breach, the top of the short distance nitration cell compartment
PH regulation cell compartments are provided with, the pH regulations cell compartment is connected with the breach, and the pH adjusts cell compartment relative with the breach
Side offer outlet, the height of the outlet is less than the height of the breach.
In some embodiments of the invention, the sludge treatment equipment also includes what is be connected with the sludge fermentation cell compartment
Sampling pump, for sludge to be pumped into sludge fermentation cell compartment, the bottom of the sludge fermentation cell compartment is provided with dredge pump, for arranging
The waste material gone out in sludge fermentation cell compartment.
In some embodiments of the invention, the sludge treatment equipment also includes what is be connected with the sludge fermentation cell compartment
Methane recovery mechanism, for reclaiming the methane produced in sludge fermentation cell compartment.
In some embodiments of the invention, the sludge treatment equipment also includes what is be connected with the sludge fermentation cell compartment
Delivery pump, is reclaimed in cell compartment for the supernatant in sludge fermentation cell compartment to be pumped into guanite.
In some embodiments of the invention, the sludge treatment equipment also includes being connected with guanite recovery cell compartment
Medicine addition mechanism, reclaimed for medicine to be added into the guanite in cell compartment.
In some embodiments of the invention, the bottom of the short distance nitration cell compartment is provided with trash discharge pump, for arranging
The waste material gone out in short distance nitration cell compartment；
Nitrous acid product collecting pump is provided with the middle part of the short distance nitration cell compartment, is received for nitrous acid to be pumped into nitrous acid
In acquisition means.
In some embodiments of the invention, the first agitator, the pH regulations are provided with the sludge fermentation cell compartment
It is provided with cell compartment in the second agitator, the short distance nitration cell compartment and is provided with the 3rd agitator.
The method for sludge treatment comprises the following steps：
1) excess sludge is added in sludge fermentation cell compartment by sampling pump, then by zymotic fluid in sludge fermentation cell compartment
PH regulation arrive 9-11；
2) under the stirring of the first agitator, anaerobic fermentation 10-15 days, the pH of zymotic fluid is controlled in 9-11, fermentation process
The methane of generation is collected and stored by methane recovery mechanism 13；
3) stop 2-5 hour of stirring after fermentation ends, after after mud-water separation, supernatant is pumped into by conveying
Guanite is reclaimed in cell compartment, and the concentration that medicine adds total phosphorus of the mechanism in supernatant is suitable to the guanite recovery addition of cell compartment 3
The magnesium chloride solution of equivalent, the concentration for making magnesium is that the nitrogen phosphonium ion in 1-2 times of phosphorus, magnesium ion and supernatant reacts the bird generated
Coprolite is precipitated in guanite reclaims cell compartment 3 and reclaimed；
4) at the same time, reacted solution is gone out by breach from guanite recovery cell compartment overflow in guanite recovery cell compartment
Come, and flow into pH regulation cell compartments, under the stirring of the second agitator, pH value of solution is adjusted to after 6-8, and solution overflows to short distance nitre again
Change in cell compartment；
5) solution enters after short distance nitration cell compartment, and the pH of short distance nitration cell compartment maintains 5-8, makes solution by being aerated mechanism
Oxyty maintain 2-3mg/L, reaction time control is 1-3 days；Remaining ammonia nitrogen is in short distance nitration sludge in solution
Under effect, nitrous acid is converted into, after the completion of reaction, stops aeration and stirs, after after mud-water separation, contain high concentration nitrite anions
Supernatant by product collecting pump into Product recycling device reclaim.
From the above it can be seen that the method for sludge treatment that the present invention is provided greatly reduces being processed into for excess sludge
Originally with the surplus of accessory substance；Also the floor space of sludge treatment device is greatly reduced；Moreover, in the base of sludge treatment technique
The energy (methane) and resource (guanite and nitrous acid) are added on plinth to reclaim, and make to need the process changeover of consuming cost be originally
There is the technique of economic well-being of workers and staff.
Brief description of the drawings
Fig. 1 is the structural representation of the sludge treatment equipment of the embodiment of the present invention；
Fig. 2 illustrates for the methane production of the sludge treatment equipment of the embodiment of the present invention, guanite yield and nitrous acid yield
Figure.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, below in conjunction with specific embodiment, and reference
Accompanying drawing, the present invention is described in more detail.
As one embodiment of the present of invention, the method for sludge treatment that the present invention is provided is entered using following sludge treatment equipment
Row Treatment of Sludge, as shown in figure 1, it is the structural representation for the sludge treatment equipment that the embodiment of the present invention is used, the sludge
The inside of processing unit sets baffle plate 5, and the inside division of sludge treatment equipment is sludge fermentation cell compartment 1 and short by the baffle plate 5
Journey nitrifies cell compartment 2, leaving certain gaps uncovered by the economic plan 6 between the baffle plate 5 and the top of sludge treatment equipment, the top of the sludge fermentation cell compartment 1
Portion is provided with guanite and reclaims cell compartment 3, and the guanite reclaims cell compartment 3 and connected with the breach 6, the short distance nitration cell compartment 2
Top be provided with pH regulation cell compartments 4, pH regulation cell compartment 4 is connected with the breach 6, the pH adjust cell compartment 4 with institute
State the relative side of breach 6 and offer outlet 41, the height of the outlet 41 is less than the height of the breach 6.
Further, the sludge treatment equipment also includes the sampling pump 11 being connected with the sludge fermentation cell compartment 1, described
Sampling pump 11 is used to sludge being pumped into sludge fermentation cell compartment 1, and the bottom of the sludge fermentation cell compartment 1 is provided with dredge pump 12,
For discharging the waste material in sludge fermentation cell compartment 1.The sludge treatment equipment also includes what is be connected with the sludge fermentation cell compartment 1
Methane recovery mechanism 13, for reclaiming the methane produced in sludge fermentation cell compartment 1.The sludge treatment equipment also include with it is described
The connected delivery pump 15 of sludge fermentation cell compartment 1, cell compartment 3 is reclaimed for the supernatant in sludge fermentation cell compartment 1 to be pumped into guanite
In.The sludge treatment equipment also includes reclaiming the medicine addition mechanism 31 that cell compartment 3 is connected with the guanite, for by medicine
The guanite is added to reclaim in cell compartment 3.Further, the bottom of the short distance nitration cell compartment 2 is provided with trash discharge pump 22,
For discharging the waste material in short distance nitration cell compartment 2；The middle part of the short distance nitration cell compartment 2 is provided with nitrous acid product collecting pump
23, for nitrous acid to be pumped into nitrous acid collection device (not shown).
Preferably, it is provided with the first agitator 14, the pH regulations cell compartment 4 and is provided with the sludge fermentation cell compartment 1
The 3rd agitator 21 is provided with second agitator 42, the short distance nitration cell compartment 2, so that the material in each cell compartment is more
Uniformly.
The application method of the sludge treatment equipment includes：
1) excess sludge is added in sludge fermentation cell compartment 1 by sampling pump 11, then will be sent out in sludge fermentation cell compartment 1
9-11 is arrived in the pH regulations of zymotic fluid；
2) under the stirring of the first agitator 14, anaerobic fermentation 10-15 days, the pH of zymotic fluid is controlled by pH adjusting meanss
In 9-11, the methane that fermentation process is produced is collected and stored by methane recovery mechanism 13；
3) stop 2-5 hour of stirring after fermentation ends, after after mud-water separation, supernatant is conveyed by delivery pump 15
Reclaimed to guanite in cell compartment 3, the concentration that medicine adds total phosphorus of the mechanism 31 in supernatant adds to guanite recovery cell compartment 3
Plus the magnesium chloride solution of appropriate amount, the concentration for making magnesium is the nitrogen phosphonium ion reaction generation in 1-2 times of phosphorus, magnesium ion and supernatant
Guanite guanite reclaim cell compartment 3 in precipitate reclaim；
4) at the same time, guanite reclaims reacted solution in cell compartment 3 and overflow by breach 6 from guanite recovery cell compartment 3
Flow out, and flow into pH regulation cell compartments 4, under the stirring of the second agitator 42, pH value of solution is adjusted to after 6-8, solution overflow again
Into short distance nitration cell compartment 2；
5) solution enter short distance nitration cell compartment 2 after, the pH of short distance nitration cell compartment maintains 5-8, by be aerated mechanism make it is molten
The oxyty of liquid maintains 2-3mg/L, and reaction time control is 1-3 days.Remaining ammonia nitrogen is in short distance nitration sludge in solution
In the presence of, nitrous acid is converted into, after the completion of reaction, stops aeration and stirs, after after mud-water separation, contain high concentration nitrous acid
The supernatant of root enters nitrous acid-restoring plant by nitrous acid collecting pump 23 and reclaimed.
Because the reaction time for methane phase cell compartment of fermenting is 10-15 days, and the reaction time of short distance nitration cell compartment is 1-3
My god, therefore to improve reaction rate and utilization ratio of device, a short distance nitration cell compartment can be connected with 5 sludge fermentation cell compartments,
Share same guanite and reclaim cell compartment and pH regulation cell compartments.
From Figure 2 it can be seen that can be stablized using the present apparatus and method processing excess sludge in the experimentation of 60 days by a definite date
Efficient resource and energy recovery, wherein 1958mg guanite can averagely be obtained by often handling 1 liter of sludge, while short distance nitration lattice
Cultured water mean concentration in the water outlet of room can maintain 326mg/L or so, in addition, can also obtain flat in sludge fermentation cell compartment
Average is 80ml/g VSS methane production.This result illustrates, efficiently can be reclaimed using the device of the present invention from sludge
Resource and the energy.
As one embodiment of the present of invention, each cell compartment effective volume is as follows：Sludge fermentation cell compartment 20L, guanite are reclaimed
Cell compartment 5L, pH adjusts cell compartment 5L and short distance nitration cell compartment 20L.Before experiment starts, tamed in the inoculation of sludge fermentation cell compartment
In the basic conditions can high-efficiency fermenting sludge methane phase sludge, short distance nitration cell compartment be inoculated with tamed can be by ammonia
Nitrogen Efficient Conversion is the short distance nitration sludge of nitrous acid.
As described above, the method for sludge treatment that the present invention is provided is greatly reduced after processing cost and the processing of excess sludge
The surplus of carbon nitrogen P elements in sludge accessory substance；Also the floor space of sludge treatment device is greatly reduced；Moreover, in sludge
The energy (methane) is added on the basis of handling process and resource (guanite and nitrous acid) is reclaimed, makes to need consuming cost originally
Process changeover be the technique for having economic well-being of workers and staff.
Those of ordinary skills in the art should understand that：The discussion of any of the above embodiment is exemplary only, not
It is intended to imply that the scope of the present disclosure (including claim) is limited to these examples；Under the thinking of the present invention, above example
Or can also not be combined between the technical characteristic in be the same as Example, step can be realized with random order, and be existed such as
Many other changes of upper described different aspect of the invention, for simplicity, they are provided not in details.Therefore, it is all
Within the spirit and principles in the present invention, any omission, modification, equivalent substitution, improvement for being made etc. should be included in the present invention's
Within protection domain.
Claims (8)
1. a kind of method for sludge treatment, it is characterised in that carried out using following sludge treatment equipment at Treatment of Sludge, the sludge
The inside for managing device sets baffle plate, and the inside division of sludge treatment equipment is sludge fermentation cell compartment and short distance nitration by the baffle plate
Bird is provided with the top of leaving certain gaps uncovered by the economic plan between cell compartment, the top of the baffle plate and sludge treatment equipment, the sludge fermentation cell compartment
Coprolite reclaims cell compartment, and the guanite reclaims cell compartment and connected with the breach, and pH is provided with the top of the short distance nitration cell compartment
Cell compartment is adjusted, the pH regulations cell compartment is connected with the breach, and the pH regulations cell compartment is opened in the side relative with the breach
Provided with outlet, the height of the outlet is less than the height of the breach.
2. method for sludge treatment according to claim 1, it is characterised in that the sludge treatment equipment also include with it is described
The connected sampling pump of sludge fermentation cell compartment, for sludge to be pumped into sludge fermentation cell compartment, the bottom of the sludge fermentation cell compartment
Dredge pump is provided with, for discharging the waste material in sludge fermentation cell compartment.
3. method for sludge treatment according to claim 2, it is characterised in that the sludge treatment equipment also include with it is described
The connected methane recovery mechanism of sludge fermentation cell compartment, for reclaiming the methane produced in sludge fermentation cell compartment.
4. method for sludge treatment according to claim 3, it is characterised in that the sludge treatment equipment also include with it is described
The connected delivery pump of sludge fermentation cell compartment, is reclaimed in cell compartment for the supernatant in sludge fermentation cell compartment to be pumped into guanite.
5. method for sludge treatment according to claim 4, it is characterised in that the sludge treatment equipment also include with it is described
Guanite reclaims the connected medicine addition mechanism of cell compartment, is reclaimed for medicine to be added into the guanite in cell compartment.
6. method for sludge treatment according to claim 1, it is characterised in that the bottom of the short distance nitration cell compartment is provided with
Trash discharge pump, for discharging the waste material in short distance nitration cell compartment；
Nitrous acid collecting pump is provided with the middle part of the short distance nitration cell compartment, for nitrous acid to be pumped into nitrous acid collection device
In.
7. method for sludge treatment according to claim 5, it is characterised in that be provided with first in the sludge fermentation cell compartment
It is provided with agitator, the pH regulations cell compartment in the second agitator, the short distance nitration cell compartment and is provided with the 3rd agitator.
8. method for sludge treatment according to claim 7, it is characterised in that the method for sludge treatment includes following step
Suddenly：
1) excess sludge is added in sludge fermentation cell compartment by sampling pump, then by the pH of zymotic fluid in sludge fermentation cell compartment
Adjust 9-11；
2) under the stirring of the first agitator, anaerobic fermentation 10-15 days, the pH controls of zymotic fluid are in 9-11, and fermentation process is produced
Methane collect and store by methane recovery mechanism 13；
3) stop 2-5 hour of stirring after fermentation ends, after after mud-water separation, supernatant is pumped into birds droppings by conveying
Stone is reclaimed in cell compartment, and the concentration that medicine adds total phosphorus of the mechanism in supernatant reclaims the addition appropriate amount of cell compartment 3 to guanite
Magnesium chloride solution, the concentration for making magnesium is the guanite of the nitrogen phosphonium ion reaction generation in 1-2 times of phosphorus, magnesium ion and supernatant
Precipitate and reclaim in guanite reclaims cell compartment 3；
4) at the same time, guanite reclaims reacted solution in cell compartment and overflowed by breach from guanite recovery cell compartment,
And pH regulation cell compartments are flowed into, under the stirring of the second agitator, pH value of solution is adjusted to after 6-8, and solution overflows to short distance nitration again
In cell compartment；
5) solution enters after short distance nitration cell compartment, and the pH of short distance nitration cell compartment maintains 5-8, makes the molten of solution by being aerated mechanism
Oxygen concentration maintains 2-3mg/L, and reaction time control is 1-3 days；Effect of the remaining ammonia nitrogen in short distance nitration sludge in solution
Under, nitrous acid is converted into, after the completion of reaction, stops aeration and stirs, after after mud-water separation, contain the upper of high concentration nitrite anions
Clear liquid is reclaimed by product collecting pump into nitrous acid-restoring plant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710198568.2A CN107032575A (en) | 2017-03-29 | 2017-03-29 | Method for sludge treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710198568.2A CN107032575A (en) | 2017-03-29 | 2017-03-29 | Method for sludge treatment |
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| CN107032575A true CN107032575A (en) | 2017-08-11 |
Family
ID=59534584
Family Applications (1)
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| CN201710198568.2A Pending CN107032575A (en) | 2017-03-29 | 2017-03-29 | Method for sludge treatment |
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| JP2716348B2 (en) * | 1993-09-24 | 1998-02-18 | 日本碍子株式会社 | Sewage return water treatment method |
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2017
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Application publication date: 20170811 |