CN106277685A - A kind of sludge treating system and method for sludge treatment - Google Patents
A kind of sludge treating system and method for sludge treatment Download PDFInfo
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- CN106277685A CN106277685A CN201610858753.5A CN201610858753A CN106277685A CN 106277685 A CN106277685 A CN 106277685A CN 201610858753 A CN201610858753 A CN 201610858753A CN 106277685 A CN106277685 A CN 106277685A
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- agitator tank
- sludge
- mud
- conditioner
- treating system
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- 239000010802 sludge Substances 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 20
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000012216 screening Methods 0.000 claims abstract description 20
- 230000004151 fermentation Effects 0.000 claims abstract description 15
- 238000000855 fermentation Methods 0.000 claims abstract description 13
- 238000007599 discharging Methods 0.000 claims abstract description 12
- 239000012065 filter cake Substances 0.000 claims abstract description 12
- 238000003756 stirring Methods 0.000 claims abstract description 12
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 230000008569 process Effects 0.000 claims abstract description 7
- 238000000926 separation method Methods 0.000 claims abstract description 4
- 239000010902 straw Substances 0.000 claims description 13
- SURQXAFEQWPFPV-UHFFFAOYSA-L iron(2+) sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Fe+2].[O-]S([O-])(=O)=O SURQXAFEQWPFPV-UHFFFAOYSA-L 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 4
- 230000003750 conditioning effect Effects 0.000 claims description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 3
- 239000001117 sulphuric acid Substances 0.000 claims description 3
- 235000011149 sulphuric acid Nutrition 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims 1
- 235000003891 ferrous sulphate Nutrition 0.000 abstract description 4
- 239000011790 ferrous sulphate Substances 0.000 abstract description 4
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 abstract 1
- 238000010564 aerobic fermentation Methods 0.000 description 8
- 239000010865 sewage Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 229920002678 cellulose Polymers 0.000 description 3
- 239000001913 cellulose Substances 0.000 description 3
- 150000002505 iron Chemical class 0.000 description 3
- 239000010801 sewage sludge Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- -1 hydroxyl radical free radical Chemical class 0.000 description 2
- 229920005610 lignin Polymers 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 102000002322 Egg Proteins Human genes 0.000 description 1
- 108010000912 Egg Proteins Proteins 0.000 description 1
- 229920002488 Hemicellulose Polymers 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000003421 catalytic decomposition reaction Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000000254 damaging effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 239000003864 humus Substances 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002906 microbiologic effect Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000000474 nursing effect Effects 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 210000004681 ovum Anatomy 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
Classifications
-
- 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
- C02F11/06—Treatment of sludge; Devices therefor by oxidation
-
- 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
-
- 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
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- 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
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a kind of sludge treating system, connect including the first agitator tank, pressure filter, the second agitator tank and screening machine, the charging aperture of the first agitator tank and sludge pipe；It is connected with mud homogenizing pond and sludge pump in turn by pipeline between first agitator tank and the charging aperture of pressure filter；The discharging opening of pressure filter is connected by the feeding mouth of feeding device and the second agitator tank, is connected with one time fermentation tower and ferment in second time tower in turn by feeding device between discharging opening and the feeding mouth of screening machine of the second agitator tank.Also disclose method for sludge treatment based on above-mentioned sludge treating system: the mud of more than moisture content 98wt% is passed through the first agitator tank, regulation pH, add hydrogen peroxide and ferrous sulfate, after stirring, be passed through mud homogenizing pond separation solid-liquid, filter pressing, obtain the filter cake of moisture content 60wt%, it is passed through the second agitator tank, adds conditioner, stirring, last carry out successively fermenting, sieve, pack, i.e. complete the process to mud.
Description
Technical field
The present invention relates to technical field of sludge treatment, be specifically related to a kind of sludge treating system and method for sludge treatment.
Background technology
Mud is the material of a kind of solid-liquid mixing, and in the case of not having external force to intervene, its solid-to-liquid ratio is the most stable.Mud
Belonging to colloid form structure hydroaropic substance, it is easy to degenerate smelly, granule is relatively thin, proportion less (about 1.02-1.006), and moisture content is high
And it is difficult to dehydration.The feature of China's municipal sewage plant mud is: (1) sludge yield is big, Sewage Plant scale is big, mud produces collection
In；(2) content of organic matter is low, sediment charge is big；(3) shale difference in different regions is big.The moisture percentage in sewage sludge of municipal sewage plant is
Between 92%-99.5%, after needing to drop to a certain degree moisture percentage in sewage sludge, then carry out aerobic fermentation process, finally realize dirt
The resource of mud, minimizing and innoxious.In traditional aerobic fermentation process, first moisture percentage in sewage sludge is reduced to about 80%,
Then add the conditioner such as straw, sawdust and moisture content is adjusted to about 63%, in this process, need to add substantial amounts of conditioning
Agent, relatively costly, also lead the volume of political affairs mud, weight simultaneously and all can be greatly increased, add the processing cost of unit sludge.
Summary of the invention
For problems of the prior art, it is an object of the invention to provide a kind of sludge treating system and mud thereof
Processing method, to solve to need to add the conditioners such as substantial amounts of straw, sawdust in sludge handling process present in prior art
Defect, reduce Treatment of Sludge cost.
In order to achieve the above object, the present invention is achieved by the following technical solutions.
(1) a kind of sludge treating system, including the first agitator tank, pressure filter, the second agitator tank and screening machine, described the
The charging aperture of one agitator tank and sludge pipe connect, and described first agitator tank is provided with the first conditioner entrance；Described first stirs
Mix and be connected with mud homogenizing pond and sludge pump in turn by pipeline between the charging aperture of groove and described pressure filter；Described pressure filter
Discharging opening connected by the feeding mouth of feeding device and described second agitator tank, the second agitator tank is provided with the second conditioner and enters
Mouthful, it is connected with one time fermentation tower in turn by feeding device between discharging opening and the feeding mouth of described screening machine of the second agitator tank
With ferment in second time tower；The discharging opening of described screening machine is connected by feeding device and packer.
Preferably, described screening machine being additionally provided with coarse fodder outlet, coarse fodder outlet is by feeding device and described second stirring
Second conditioner entrance of groove connects.
Preferably, described pressure filter is program control diaphragm filter press.
Preferably, described second agitator tank is Double helix agitator tank.
Preferably, described feeding device is travelling belt.
(2) method for sludge treatment based on above-mentioned sludge treating system, it is characterised in that comprise the following steps:
Step 1, is passed through described first agitator tank by the moisture content mud more than or equal to 98wt%, and to described first stirring
Add acid, the pH to 3-4 of conditioning of mud in groove, be subsequently adding the first conditioner hydrogen peroxide and copperas solution, stirring, obtain slurry
Liquid；
Step 2, is passed through described serosity mud homogenizing pond and carries out solid-liquid separation, then is passed through sludge pump and pumps into pressure filter and enter
Row filter pressing, obtains the filter cake that water content is 60wt%；
Step 3, is delivered to described filter cake the second agitator tank, and adds the second conditioner, stirring, is passed through one the most successively
Secondary fermentation tower and ferment in second time tower ferment, and pass sequentially through screening machine and packer carries out sieving, packing, and i.e. complete dirt
The process of mud.
Preferably, in step 1, described acid is sulphuric acid or hydrochloric acid.
Preferably, in step 1, the concentration of hydrogen peroxide is 27.5-35wt%.
Preferably, in step 1, the addition of described hydrogen peroxide is (0.005-0.015) with the mass ratio of described mud: 1.
Preferably, in step 1, the addition of described copperas solution is (0.005-with the mass ratio of described mud
0.015): 1.
Preferably, in step 3, described second conditioner is straw or sawdust.
Preferably, in step 3, the addition of described second conditioner and the mass ratio of described filter cake are (0.5-1): 1.
Preferably, in step 3, after fermenting, the moisture content of mud is down to below 45wt%.
In the present invention, hydrogen peroxide is the oxidant that a kind of oxidisability is relatively strong, oxidation-reduction potential is higher, can direct oxidation water
In organic pollution and constitute microorganism organic substance；Ferrous sulfate is stronger reducing agent, in the case of acidity, bivalence
Iron salt catalytic decomposition hydrogen peroxide, is allowed to generate free hydroxyl radical free radical, and hydroxyl radical free radical has extremely strong oxidability, can have
Extracellular polymeric (EPS) in effect Oxidative demage mud, makes the water of bonding state in mud be released, sludge dewatering is greatly improved
Performance, it is achieved the deep dehydration of mud；Simultaneously can also the Organic substance that is dissolved in mud of oxidation Decomposition, degrading poisonous and hazardous has
Machine thing, by compound harmless for degradable for pollutant one-tenth, such as CO2、H2O and inorganic salt, thus after reducing sludge dewatering further
The sewage harm to environment；It addition, divalent iron salt is oxidized to trivalent iron salt produces coagulating sedimentation, substantial amounts of Organic substance is coagulated
Tie and remove.
With straw or sawdust as conditioner in the present invention, containing substantial amounts of lignin, cellulose and half in straw or sawdust
Cellulose, and containing degradable lignin, cellulose and the aerobic microbiological of hemicellulose in mud, the application by fermentation is
In system, one time fermentation tower, ferment in second time tower make the conditioner such as straw or sawdust and mud carry out aerobic fermentation, make in mud
Organic substance changes into the humus rich in plant nutrient；It addition, the heat produced during aerobic fermentation can effectively be removed
Pathogen, parasitic ovum etc., prevent mud smelly；Aerobic fermentation can also reduce the content of beary metal of ionic state, weakens weight
The damaging effect of metal；Simultaneously as the moisture content of tunning is less than 40%, therefore aerobic fermentation or sludge drying is another
One means.
Compared with prior art, the invention have the benefit that
By include the first agitator tank, mud homogenizing pond, sludge pump, pressure filter, the second agitator tank and one time fermentation tower,
The sludge treating system of ferment in second time tower, and utilize the effect of hydrogen peroxide and ferrous sulfate, Sewage Plant can be expelled directly out
It is 60% that the mud of water content more than 98% drops to water content, then carries out aerobic fermentation, thereby reduces the conditioning such as straw, sawdust
The consumption of agent, solves and needs to add the conditioners such as substantial amounts of straw, sawdust in sludge handling process present in prior art,
Cost is high and causes the volume of mud, weight to be greatly increased, the problem that the processing cost of unit sludge increases.
Accompanying drawing explanation
With specific embodiment, the present invention is described in further details below in conjunction with the accompanying drawings.
The present invention is described in detail with detailed description of the invention below in conjunction with the accompanying drawings.
Fig. 1 is the structured flowchart of a kind of novel sludge treating system of the present invention.
In figure, the 1, first agitator tank；2, mud homogenizing pond；3, sludge pump；4, pressure filter；5, the second agitator tank；6, once
Fermentation tower；7, ferment in second time tower；8, screening machine；9, packer.
Detailed description of the invention
Below in conjunction with embodiment, embodiment of the present invention are described in detail, but those skilled in the art will
It will be appreciated that the following example is merely to illustrate the present invention, and it is not construed as limiting the scope of the present invention.
With reference to Fig. 1, present embodiments provide a kind of sludge treating system, including the first agitator tank 1, pressure filter 4, second stir
Mix groove 5 and screening machine 8, the charging aperture of the first agitator tank 1 and municipal sludge pipeline to connect, the first agitator tank 1 is additionally provided with first
Conditioner entrance, is connected with mud homogenizing pond 2, mud in turn by pipeline between the first agitator tank 1 and the charging aperture of pressure filter 4
Pump 3；The discharging opening of pressure filter 4 is connected by the feeding mouth of feeding device and the second agitator tank 5, and the second agitator tank 5 is provided with the
Two conditioner entrances, are connected with one in turn by feeding device between discharging opening and the feeding mouth of screening machine 8 of the second agitator tank 5
Secondary fermentation tower 6, ferment in second time tower 7；The discharging opening of screening machine 8 is connected by feeding device and packer 9, and screening machine 8 is additionally provided with
Coarse fodder exports, and coarse fodder outlet is connected by the second conditioner entrance of feeding device and the second agitator tank 5 so that the second conditioner
Can recycle；Wherein the second agitator tank 5 is Double helix agitator tank, and pressure filter 4 is program control diaphragm filter press, and feeding device is
Travelling belt.
Based on above-mentioned sludge treating system, the present embodiment additionally provides a kind of method for sludge treatment, is used for processing municipal administration dirty
Mud in mud pipeline, follows the steps below:
Step 1, by 100m3Municipal sludge pipeline in mud (moisture content is 98%) be passed through the first agitator tank 1, and lead to
Cross the first conditioner entrance that the first agitator tank 1 is provided with and in the first agitator tank 1, add sulphuric acid, by the pH regulator of mud to 3-
4, it is subsequently adding the hydrogen peroxide that concentration is 30wt%, is sufficiently stirred for, adds copperas solution, be sufficiently stirred for, obtain serosity；Its
The addition of middle hydrogen peroxide is 0.01:1 with the mass ratio of described mud, the addition of copperas solution and the matter of described mud
Amount ratio is 0.01:1.
Step 2, is passed through serosity mud homogenizing pond 2 and carries out solid-liquid separation, then pass to sludge pump 3 and pump into program control type pressure
Filter carries out filter pressing, obtains the filter cake that water content is 60wt%, and the quality of filter cake is 5t, and volume is 4m3。
Step 3, is delivered to the second agitator tank 5 by filter cake by travelling belt, and adds 4m3Straw or sawdust, fully
Stirring, then it is passed through one time fermentation tower 6, the interior fermentation of ferment in second time tower 7 successively by travelling belt, enter screening machine after having fermented
8, after the screening of screened machine 8, the fines after screening exports from discharging opening, and is wrapped to packer 9 by feeding device transport
Dress, is finally used as fertilizer or is entered refuse landfill and filled；The coarse fodder such as straw after screening or sawdust can be from
Coarse fodder outlet recycles in exporting and being again introduced into the second agitator tank 5 by travelling belt.After fermentation, sludge filter cake aqueous
Rate is down to 40%.
Said method passes through the first agitator tank and the second agitator tank, can be directly down to by the water content mud more than 98wt%
Water content is the filter cake of 60wt%, then carries out aerobic fermentation, thereby reduces second consumption of conditioner such as straw, sawdust, subtracts
The little volume of installation for fermenting, solves and needs to add substantial amounts of straw, saw in sludge handling process present in prior art
The conditioners such as end, cost is high and causes the volume of mud, weight to be greatly increased, the problem that the processing cost of unit sludge increases.
Meanwhile, the present invention uses the conditioner of hydrogen peroxide and ferrous sulfate to nurse one's health mud, sends out follow-up mud
Ferment does not produce impact, solves traditional method and uses limestone to carry out nursing one's health and the problem that affects follow-up sludge fermentation.
Although, in this specification, the present invention is described in detail the most with a general description of the specific embodiments,
But on the basis of the present invention, can make some modifications or improvements it, this will be apparent to those skilled in the art.
Therefore, these modifications or improvements without departing from theon the basis of the spirit of the present invention, belong to claimed model
Enclose.
Claims (10)
1. a sludge treating system, it is characterised in that include the first agitator tank (1), pressure filter (4), the second agitator tank (5) and
Screening machine (8), the charging aperture of described first agitator tank (1) and municipal sludge pipeline connect, and described first agitator tank (1) is provided with
First conditioner entrance；It is connected with in turn by pipeline between the charging aperture of described first agitator tank (1) and described pressure filter (4)
Mud homogenizing pond (2) and sludge pump (3)；The discharging opening of described pressure filter (4) passes through feeding device and described second agitator tank (5)
Feeding mouth connect, described second agitator tank (5) is provided with the second conditioner entrance, the discharging opening of described second agitator tank (5)
And it is connected with one time fermentation tower (6) and ferment in second time tower in turn by feeding device between the feeding mouth of described screening machine (8)
(7)；The discharging opening of described screening machine (8) is connected by feeding device and packer (9).
Sludge treating system the most according to claim 1, it is characterised in that described screening machine (8) is additionally provided with coarse fodder outlet,
Coarse fodder outlet is connected by the second conditioner entrance of feeding device and described second agitator tank (5).
Sludge treating system the most according to claim 1, it is characterised in that described pressure filter (4) is program control membrane filter pressing
Machine.
Sludge treating system the most according to claim 1, it is characterised in that described second agitator tank (5) is that Double helix stirs
Mix groove.
Sludge treating system the most according to claim 1, it is characterised in that described feeding device is travelling belt.
6. a method for sludge treatment based on the sludge treating system described in claim 1, it is characterised in that include following step
Rapid:
Step 1, is passed through described first agitator tank by the moisture content mud more than or equal to 98wt%, and in described first agitator tank
Add acid, the pH to 3-4 of conditioning of mud, be subsequently adding the first conditioner hydrogen peroxide and copperas solution, stirring, obtain serosity；
Step 2, is passed through described serosity described mud homogenizing pond and carries out solid-liquid separation, then be passed through described sludge pump and pump into described
Pressure filter carries out filter pressing, obtains the filter cake that water content is 60wt%；
Step 3, is delivered to described filter cake described second agitator tank, and adds the second conditioner, stirring, carries out the most successively sending out
Ferment, sieve, pack, i.e. complete the process to mud.
Method for sludge treatment the most according to claim 6, it is characterised in that in step 1, described acid is sulphuric acid or hydrochloric acid.
Method for sludge treatment the most according to claim 6, it is characterised in that in step 1, the addition of described hydrogen peroxide with
The mass ratio of described mud is (0.005-0.015): 1.
Method for sludge treatment the most according to claim 6, it is characterised in that in step 1, adding of described copperas solution
The mass ratio entering amount and described mud is (0.005-0.015): 1.
Method for sludge treatment the most according to claim 6, it is characterised in that in step 3, described second conditioner is straw
Stalk or sawdust, the addition of described second conditioner and the mass ratio of described filter cake are (0.5-1): 1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610858753.5A CN106277685A (en) | 2016-09-28 | 2016-09-28 | A kind of sludge treating system and method for sludge treatment |
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| CN201610858753.5A CN106277685A (en) | 2016-09-28 | 2016-09-28 | A kind of sludge treating system and method for sludge treatment |
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| CN109020139A (en) * | 2018-07-19 | 2018-12-18 | 广州福之源环保科技有限公司 | A kind of municipal sludge decrement method |
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| CN109020139B (en) * | 2018-07-19 | 2021-07-09 | 广州福之源环保科技有限公司 | Municipal sludge reduction method |
| CN109761468A (en) * | 2019-03-15 | 2019-05-17 | 青岛汇君环境能源工程有限公司 | A method of utilizing excess sludge anaerobic fermentation |
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Application publication date: 20170104 |