CN108423954A - The method that excess sludge dewatering is promoted in sewage disposal - Google Patents
The method that excess sludge dewatering is promoted in sewage disposal Download PDFInfo
- Publication number
- CN108423954A CN108423954A CN201810207095.2A CN201810207095A CN108423954A CN 108423954 A CN108423954 A CN 108423954A CN 201810207095 A CN201810207095 A CN 201810207095A CN 108423954 A CN108423954 A CN 108423954A
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- Prior art keywords
- excess sludge
- sludge
- kilogram
- mould
- sewage disposal
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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
-
- 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
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses the methods that excess sludge dewatering is promoted in sewage disposal, this method adds mixed fungus and a small amount of nutrients in excess sludge, wherein mixed fungus is saccharomycete and mould, nutrients is sulphur ammonium and Iron trichloride hexahydrate, and it is aerated 24 48 hours, yeast and mould can be utilized to decompose the extracellular polymeric in excess sludge zoogloea, sludge specific resistance is reduced by 50% 80%, it can be from 1011 s2/ Kg is down to 1010 s2/ Kg makes the reduction of excess sludge resistivity, dehydration rate improve, and moisture content of the cake is lower after excess sludge press filtration.
Description
Technical field
The present invention relates to the treatment technologies of excess sludge in sewage disposal, and in particular to is promoted in sewage disposal surplus
The method of remaining dewatering performance of sludge.
Background technology
A large amount of moisture is carried in sewage disposal process, in excess sludge, needs to extract out and carry out press filtration, at dehydration
Reason, but the extracellular polymeric in sludge in zoogloea, such as albumen, polysaccharide organic matter can form with water and combine water, lead to sludge
Dewatering is low, cannot be removed effectively in conjunction with water in follow-up filter-press dehydration, and it is higher to eventually lead to sludge cake moisture content.Fungi can
It is disclosed for the good of water process such as the application for a patent for invention of Publication No. 103787493 for sewage and Treatment of Sludge
Oxygen filamentous fungi mud granule.The application for a patent for invention of Publication No. 102249479 discloses in aerobic reaction room, largely
Bacterium, fungi and microorganism are under the action of aeration, oxygenolysis, large amount of organic of eating rapidly, new old quickly through aeration
It is metabolized and forms levitated object, i.e., the polysaccharose substance for the stickiness shape that bacterial secretory is formed.These are only to fungal biodegradation dirt
The simple application of water and sludge.
Invention content
Technical problem to be solved by the invention is to provide the sides that excess sludge dewatering is promoted in a kind of sewage disposal
Method, this method can allow sludge specific resistance to reduce by 50 ~ 80%, can be from 1011 s2/ Kg is down to 1010 s2/ Kg, in this way sludge press filtration,
Effect is more preferable when dehydration, and moisture content of the cake reduces.
Technical solution is used by the present invention solves above-mentioned technical problem：Excess sludge dehydration property is promoted in sewage disposal
The method of energy, its step are as follows：
A, excess sludge is drawn into reactor, adds mixed fungus wet thallus, the mixed fungus wet thallus is remained with described
The w/v of remaining sludge is 1 kilogram of 2000 ~ 4000 liters of ratio, and clump count is 1.0 ~ 1.2 × 10 in the mixed fungus13A/
Kilogram, the mixed fungus is yeast and mould, and the cell number ratio of the yeast and mould is 2 ~ 5:1；
B, sulphur ammonium and Iron trichloride hexahydrate are added in above-mentioned Aerobic Process for Treatment device, the additive amount of the sulphur ammonium is every 1000 liters remaining dirty
Mud adds 0.5 kilogram of sulphur ammonium, and the additive amount of the Iron trichloride hexahydrate is that every 1000 liters of excess sludges add Iron trichloride hexahydrate 0.05
Kilogram, it stirs evenly；
C, excess sludge in above-mentioned reactor is aerated 24 ~ 48 hours, when aeration every liter of excess sludge dissolved oxygen maintain 0.5 ~
2.0 milligrams, obtain the lower excess sludge of sludge specific resistance.
In step a, the yeast can be candida tropicalis or Candida lipolytica, and the mould can be white
Ground is mould.
In step c, the pH value of excess sludge in reactor is adjusted to pH values 6.5 ~ 7.0 before aeration.It is dirty under the pH value
Mud resistivity reducing effect is more preferable.
Compared with the prior art, the advantages of the present invention are as follows in sewage disposal promoted excess sludge dewatering method,
This method adds mixed fungus and a small amount of nutrients in excess sludge, and wherein mixed fungus is saccharomycete and mould, nutrients
It for sulphur ammonium and Iron trichloride hexahydrate, and is aerated 24-48 hours, yeast and mould can be utilized to decompose the born of the same parents in excess sludge zoogloea
Sludge specific resistance is reduced 50%-80% by outer polymer, can be from 1011 s2/ Kg is down to 1010 s2/ Kg makes the reduction of excess sludge resistivity,
Dehydration rate improves, and moisture content of the cake is lower after excess sludge press filtration.
Specific implementation mode
Present invention is further described in detail with reference to embodiments.
Embodiment 1
The method that excess sludge promotes dewatering in sewage disposal, 300 liters of excess sludges is extracted into reactor, in reactor
Middle addition clump count is 1.2 × 1013It is a/kilogram 0.1 kilogram of mixed fungus wet thallus, mixed fungus be yeast and mould, ferment
Mother can be candida tropicalis or Candida lipolytica, and mould can be geotrichum candidum, and the cell number ratio of yeast and mould is 5:
1；Add 0.15 kilogram of sulphur ammonium and 0.015 kilogram of Iron trichloride hexahydrate again in the reactor；By the pH value of excess sludge in reactor
It is adjusted to pH value 6.5, is stirred evenly, excess sludge in reactor is aerated 36 hours, dissolved oxygen maintains 2.0 milligrams when aeration
Every liter, the excess sludge of sludge specific resistance reduction is obtained, sludge specific resistance is from 4.8 × 10 after measured11 s2/ Kg is down to 9.1 × 1010
s2/Kg；It can further press filtration, dehydration.
Embodiment 2
Substantially the same manner as Example 1, different only excess sludges are 200 liters, and the cell number of mixed fungus wet thallus is 1.0
×1013A/kilogram, the cell number ratio of yeast and mould is 4:1,0.1 kilogram of wet thallus, sulphur ammonium is 0.1 kilogram, Iron trichloride hexahydrate
Be 0.01 kilogram, the pH value of excess sludge is adjusted to pH value 7.0 in reactor, is aerated 24 hours, sludge specific resistance from 2.3 ×
1011s2/ Kg is down to 5.2 × 1010s2/Kg。
Embodiment 3
Substantially the same manner as Example 1, different only excess sludges are 400 liters, and the cell number of the wet bacterium solution of mixed fungus is 1.0
×1013A/kilogram, the cell number ratio of yeast and mould is 2:1,0.1 kilogram of wet thallus, sulphur ammonium is 0.2 kilogram, Iron trichloride hexahydrate
It is 0.02 kilogram, is aerated 48 hours, sludge specific resistance is from 1.9 × 1011 s2/ Kg is down to 6.8 × 1010 s2/Kg。
Candida tropicalis or Candida lipolytica can also use other similar false silk ferment in yeast in above-described embodiment
Mother substitutes, and mould can also substitute similar to the mould of geotrichum candidum, and pH value can also suitably expand in 6.5 ~ 7.0 ranges, all have
The identical effect for promoting excess sludge dewatering, does not describe one by one herein.
Claims (3)
1. the method for promoting excess sludge dewatering in sewage disposal, it is characterised in that steps are as follows
A, excess sludge is drawn into reactor, adds mixed fungus wet thallus, the mixed fungus wet thallus is remained with described
The w/v of remaining sludge is 1 kilogram of 2000 ~ 4000 liters of ratio, and clump count is 1.0 ~ 1.2 × 10 in the mixed fungus13A/
Kilogram, the mixed fungus is yeast and mould, and the cell number ratio of the yeast and mould is 2 ~ 5:1；
B, sulphur ammonium and Iron trichloride hexahydrate are added in above-mentioned Aerobic Process for Treatment device, the additive amount of the sulphur ammonium is every 1000 liters remaining dirty
Mud adds 0.5 kilogram of sulphur ammonium, and the additive amount of the Iron trichloride hexahydrate is that every 1000 liters of excess sludges add Iron trichloride hexahydrate 0.05
Kilogram, it stirs evenly；
C, excess sludge in above-mentioned reactor is aerated 24 ~ 48 hours, when aeration every liter of excess sludge dissolved oxygen maintain 0.5 ~
2.0 milligrams, obtain the lower excess sludge of sludge specific resistance.
2. the method for promoting excess sludge dewatering in sewage disposal as described in claim 1, it is characterised in that in step a
In, the yeast can be candida tropicalis or Candida lipolytica, and the mould can be with geotrichum candidum.
3. promoting the dewatering method of excess sludge in sewage disposal as described in claim 1, it is characterised in that in step
In c, the pH value of excess sludge in reactor is adjusted to pH values 6.5 ~ 7.0 before aeration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810207095.2A CN108423954A (en) | 2018-03-14 | 2018-03-14 | The method that excess sludge dewatering is promoted in sewage disposal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810207095.2A CN108423954A (en) | 2018-03-14 | 2018-03-14 | The method that excess sludge dewatering is promoted in sewage disposal |
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| CN108423954A true CN108423954A (en) | 2018-08-21 |
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| CN201810207095.2A Pending CN108423954A (en) | 2018-03-14 | 2018-03-14 | The method that excess sludge dewatering is promoted in sewage disposal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114749467A (en) * | 2022-04-26 | 2022-07-15 | 成都工业学院 | Method for treating in-situ resource recycling sewage of red wine brewing wastes |
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| SU791654A1 (en) * | 1978-07-18 | 1980-12-30 | Калининский Ордена Трудового Красного Знамени Политехнический Институт | Method of suspension thickening |
| CN101074142A (en) * | 2007-06-20 | 2007-11-21 | 上海裕麒环境技术服务有限公司 | Method for circulating and reutilizing sludge during process of sewage |
| CN101255402A (en) * | 2008-04-07 | 2008-09-03 | 谭宏伟 | Thallus for producing biological fertilizer by employing cane sugar filter mud fermentation |
| CN101407761A (en) * | 2008-05-07 | 2009-04-15 | 孙荣高 | Liquid inocula composed of yeast fused strain, Geotrichum candidum Link and Rhizopus, and preparation and use thereof |
| CN103936246A (en) * | 2014-03-27 | 2014-07-23 | 南京农业大学 | New method for deeply dewatering sludge through bio-leaching process rapid conditioning |
| CN107176781A (en) * | 2017-05-22 | 2017-09-19 | 江南大学 | A kind of method that utilization champac shape fungal mycelium improves dewatering performance of sludge |
-
2018
- 2018-03-14 CN CN201810207095.2A patent/CN108423954A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU791654A1 (en) * | 1978-07-18 | 1980-12-30 | Калининский Ордена Трудового Красного Знамени Политехнический Институт | Method of suspension thickening |
| CN101074142A (en) * | 2007-06-20 | 2007-11-21 | 上海裕麒环境技术服务有限公司 | Method for circulating and reutilizing sludge during process of sewage |
| CN101255402A (en) * | 2008-04-07 | 2008-09-03 | 谭宏伟 | Thallus for producing biological fertilizer by employing cane sugar filter mud fermentation |
| CN101407761A (en) * | 2008-05-07 | 2009-04-15 | 孙荣高 | Liquid inocula composed of yeast fused strain, Geotrichum candidum Link and Rhizopus, and preparation and use thereof |
| CN103936246A (en) * | 2014-03-27 | 2014-07-23 | 南京农业大学 | New method for deeply dewatering sludge through bio-leaching process rapid conditioning |
| CN107176781A (en) * | 2017-05-22 | 2017-09-19 | 江南大学 | A kind of method that utilization champac shape fungal mycelium improves dewatering performance of sludge |
Non-Patent Citations (2)
| Title |
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| 何冬兰主编: "《微生物学辅导与习题详解》", 31 August 2008, 华中科技大学出版社 * |
| 甄广印、赵由才著: "《城市污泥强化深度脱水资源化利用及卫生填埋末端处置关键技术研究》", 31 August 2017, 同济大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114749467A (en) * | 2022-04-26 | 2022-07-15 | 成都工业学院 | Method for treating in-situ resource recycling sewage of red wine brewing wastes |
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