CN108191182A - A kind of method that municipal sludge extraction phosphorus is handled by the acid-hatching of young eggs - Google Patents
A kind of method that municipal sludge extraction phosphorus is handled by the acid-hatching of young eggs Download PDFInfo
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- CN108191182A CN108191182A CN201810047231.6A CN201810047231A CN108191182A CN 108191182 A CN108191182 A CN 108191182A CN 201810047231 A CN201810047231 A CN 201810047231A CN 108191182 A CN108191182 A CN 108191182A
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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
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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
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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
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Processing Of Solid Wastes (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a kind of methods that municipal sludge extraction phosphorus is handled by the acid-hatching of young eggs, include the following steps：Step 1, municipal sludge is weighed, dehydration thickening, anaerobic digestion and drying are carried out to it successively, obtains dry sludge；Step 2, dry sludge with certain density sulfuric acid according to certain first solid-to-liquid ratio is mixed, obtains mixture solution；Step 3, leachate is obtained after mixture solution being stood certain first time at a certain temperature；Step 4, leachate with cation exchange resin with certain second solid-to-liquid ratio is mixed, obtains mixed liquor；Step 5, mixed liquor is stirred in certain rotating speed and at room temperature certain second time using constant temperature oscillator, after stirring stops, using the heavy metal in vacuum filter filtering solution, obtains filtered fluid；Step 6, filtered fluid with ammonium hydroxide and magnesium hydroxide with certain molar ratio is mixed, and stands certain third time, obtain sediment, which is phosphorus-containing compound.
Description
Technical field
The present invention relates to a kind of methods for extracting phosphorus, and in particular to a kind of to handle municipal sludge extraction phosphorus by the acid-hatching of young eggs
Method.
Background technology
Municipal sludge is the inevitable outcome of sewage treatment plant and sewage disposal.It is fast with Chinese society economy and urbanization
Speed development, the discharge capacity of China's municipal sludge are consequently increased.The increase of municipal sludge discharge capacity, reduce sewage disposal system has
Processing capacity is imitated, and serious threat is constituted to the activity of ecological environment and the mankind.Therefore, how rationally, to be effectively located in
Reason sludge become one it is very urgent the problem of.
Containing abundant and valuable organic compound and nutrient in municipal sludge, and sludge has very high phosphorus
Content, this becomes the potential source of phosphorus nutrient.Due to the consumption of apatite mine substance, phosphorus is recycled and is become increasingly in sludge
It is important.The conventional method of China's processing municipal sludge mainly has landfill, burning and recycling.The processing of these sludge
Method cannot all recycle valuable substance in sludge, it is impossible to sludge be made to get utilization.Currently come, city
The recycling and recovery energy of city's sludge are the important directions of domestic sludge industry development.Therefore, how city is recycled
Useful substance becomes urgent important come the harm reduced to environment in sludge.
Invention content
The present invention is to carry out to solve the above-mentioned problems, and it is an object of the present invention to provide a kind of handle city dirt by the acid-hatching of young eggs
The method that mud extracts phosphorus.
The present invention provides a kind of methods that municipal sludge extraction phosphorus is handled by the acid-hatching of young eggs, have the feature that, wrap
Include following steps：
Step 1, municipal sludge is weighed, dehydration thickening, anaerobic digestion and drying are carried out to it successively, obtains dry sludge；
Step 2, dry sludge with certain density sulfuric acid according to certain first solid-to-liquid ratio is mixed, it is molten obtains mixture
Liquid；
Step 3, leachate is obtained after mixture solution being stood certain first time at a certain temperature；
Step 4, leachate with cation exchange resin with certain second solid-to-liquid ratio is mixed, obtains mixed liquor；
Step 5, mixed liquor is stirred into certain rotating speed and at room temperature certain second time using constant temperature oscillator, stirring stops
After only, using the heavy metal in vacuum filter filtering solution, filtered fluid is obtained；
Step 6, when filtered fluid is mixed with ammonium hydroxide and magnesium hydroxide with certain molar ratio, and stand certain third
Between, sediment is obtained, which is phosphorus-containing compound,
Wherein, a certain concentration of the sulfuric acid in step 2 is 0.1-2M.
In the method provided by the invention that municipal sludge extraction phosphorus is handled by the acid-hatching of young eggs, there can also be such spy
Sign：Wherein, a certain concentration of the sulfuric acid in step 2 is 0.5-1M.
In the method provided by the invention that municipal sludge extraction phosphorus is handled by the acid-hatching of young eggs, there can also be such spy
Sign：Wherein, a certain concentration of the sulfuric acid in step 2 is 1M.
In the method provided by the invention that municipal sludge extraction phosphorus is handled by the acid-hatching of young eggs, there can also be such spy
Sign：Wherein, certain first solid-to-liquid ratio is 5%.
In the method provided by the invention that municipal sludge extraction phosphorus is handled by the acid-hatching of young eggs, there can also be such spy
Sign：Wherein, the certain temperature in step 3 is 100 DEG C, and certain is 2h at the first time.
In the method provided by the invention that municipal sludge extraction phosphorus is handled by the acid-hatching of young eggs, there can also be such spy
Sign：Wherein, certain second solid-to-liquid ratio in step 4 is 10%.
In the method provided by the invention that municipal sludge extraction phosphorus is handled by the acid-hatching of young eggs, there can also be such spy
Sign：Wherein, certain rotating speed in step 5 is 200rpm, and certain second time in step 5 is 2h.
In the method provided by the invention that municipal sludge extraction phosphorus is handled by the acid-hatching of young eggs, there can also be such spy
Sign：Wherein, certain molar ratio in step 6 is P:N:Mg=1:3:4, certain third time is for 24 hours.
The effect of invention
According to a kind of method that municipal sludge extraction phosphorus is handled by the acid-hatching of young eggs of the present invention, when sulfuric acid concentration exists
The extracted amount for the phosphorus that can be extracted in the range of 0.1-2M is higher, and the extracted amount of phosphorus when sulfuric acid concentration is 1M reaches most
Greatly.A kind of method that municipal sludge extraction phosphorus is handled by the acid-hatching of young eggs of the present invention, using municipal sludge, by pretreatment
(dehydration thickening, anaerobic digestion and drying) is mixed, is stood, remixing, stirring, filtering, remixing, standing these processes again and obtain
To sediment phosphorus, the technological process of this method is simple, processing time is short, and the yield for recycling valuable phosphorus in sludge is high.
In addition, using municipal sludge as raw material, production cost is not only reduced, and municipal sludge can be made to obtain good recycling profit
With preferably solving conventional process mode and pollute the problems such as environment, valuable substance yield are few, in the reasonable of municipal sludge
It is had important practical significance and economic value in being effectively treated.
Specific embodiment
In order to which the technological means for realizing the present invention is easy to understand with effect, the present invention is made with reference to embodiments
It is specifically described.
Embodiment one：
Step 1, municipal sludge is weighed, dehydration thickening, anaerobic digestion and drying are carried out to it successively, obtains dry sludge.
Step 2, dry sludge with the sulfuric acid of 0.1M concentration according to 5% solid-to-liquid ratio is mixed, obtains mixture solution.
Step 3, leachate is obtained after mixture solution being stood 2h at 100 DEG C.
Step 4, leachate with cation exchange resin with 10% solid-to-liquid ratio is mixed, obtains mixed liquor.
Step 5, mixed liquor is stirred into 2h in 200rpm and at room temperature using constant temperature oscillator, after stirring stops, using true
Heavy metal in air filter filtering solution, obtains filtered fluid.
Step 6, by filtered fluid and ammonium hydroxide and magnesium hydroxide with P:N:Mg=1:3:4 molar ratio mixing, and stand
For 24 hours, sediment phosphorus-containing compound I is obtained.
Embodiment two：
Step 1, municipal sludge is weighed, dehydration thickening, anaerobic digestion and drying are carried out to it successively, obtains dry sludge.
Step 2, dry sludge with the sulfuric acid of 0.3M concentration according to 5% solid-to-liquid ratio is mixed, obtains mixture solution.
Step 3, leachate is obtained after mixture solution being stood 2h at 100 DEG C.
Step 4, leachate with cation exchange resin with 10% solid-to-liquid ratio is mixed, obtains mixed liquor.
Step 5, mixed liquor is stirred into 2h in 200rpm and at room temperature using constant temperature oscillator, after stirring stops, using true
Heavy metal in air filter filtering solution, obtains filtered fluid.
Step 6, by filtered fluid and ammonium hydroxide and magnesium hydroxide with P:N:Mg=1:3:4 molar ratio mixing, and stand
For 24 hours, sediment phosphorus-containing compound II is obtained.
Embodiment three：
Step 1, municipal sludge is weighed, dehydration thickening, anaerobic digestion and drying are carried out to it successively, obtains dry sludge.
Step 2, dry sludge with the sulfuric acid of 0.5M concentration according to 5% solid-to-liquid ratio is mixed, obtains mixture solution.
Step 3, leachate is obtained after mixture solution being stood 2h at 100 DEG C.
Step 4, leachate with cation exchange resin with 10% solid-to-liquid ratio is mixed, obtains mixed liquor.
Step 5, mixed liquor is stirred into 2h in 200rpm and at room temperature using constant temperature oscillator, after stirring stops, using true
Heavy metal in air filter filtering solution, obtains filtered fluid.
Step 6, by filtered fluid and ammonium hydroxide and magnesium hydroxide with P:N:Mg=1:3:4 molar ratio mixing, and stand
For 24 hours, sediment phosphorus-containing compound III is obtained.
Example IV：
Step 1, municipal sludge is weighed, dehydration thickening, anaerobic digestion and drying are carried out to it successively, obtains dry sludge.
Step 2, dry sludge with the sulfuric acid of 0.8M concentration according to 5% solid-to-liquid ratio is mixed, obtains mixture solution.
Step 3, leachate is obtained after mixture solution being stood 2h at 100 DEG C.
Step 4, leachate with cation exchange resin with 10% solid-to-liquid ratio is mixed, obtains mixed liquor.
Step 5, mixed liquor is stirred into 2h in 200rpm and at room temperature using constant temperature oscillator, after stirring stops, using true
Heavy metal in air filter filtering solution, obtains filtered fluid.
Step 6, by filtered fluid and ammonium hydroxide and magnesium hydroxide with P:N:Mg=1:3:4 molar ratio mixing, and stand
For 24 hours, sediment phosphorus-containing compound IV is obtained.
Embodiment five：
Step 1, municipal sludge is weighed, dehydration thickening, anaerobic digestion and drying are carried out to it successively, obtains dry sludge.
Step 2, dry sludge with the sulfuric acid of 1M concentration according to 5% solid-to-liquid ratio is mixed, obtains mixture solution.
Step 3, leachate is obtained after mixture solution being stood 2h at 100 DEG C.
Step 4, leachate with cation exchange resin with 10% solid-to-liquid ratio is mixed, obtains mixed liquor.
Step 5, mixed liquor is stirred into 2h in 200rpm and at room temperature using constant temperature oscillator, after stirring stops, using true
Heavy metal in air filter filtering solution, obtains filtered fluid.
Step 6, by filtered fluid and ammonium hydroxide and magnesium hydroxide with P:N:Mg=1:3:4 molar ratio mixing, and stand
For 24 hours, sediment phosphorus-containing compound V is obtained.
Embodiment six：
Step 1, municipal sludge is weighed, dehydration thickening, anaerobic digestion and drying are carried out to it successively, obtains dry sludge.
Step 2, dry sludge with the sulfuric acid of 1.5M concentration according to 5% solid-to-liquid ratio is mixed, obtains mixture solution.
Step 3, leachate is obtained after mixture solution being stood 2h at 100 DEG C.
Step 4, leachate with cation exchange resin with 10% solid-to-liquid ratio is mixed, obtains mixed liquor.
Step 5, mixed liquor is stirred into 2h in 200rpm and at room temperature using constant temperature oscillator, after stirring stops, using true
Heavy metal in air filter filtering solution, obtains filtered fluid.
Step 6, by filtered fluid and ammonium hydroxide and magnesium hydroxide with P:N:Mg=1:3:4 molar ratio mixing, and stand
For 24 hours, sediment phosphorus-containing compound VI is obtained.
Embodiment seven：
Step 1, municipal sludge is weighed, dehydration thickening, anaerobic digestion and drying are carried out to it successively, obtains dry sludge.
Step 2, dry sludge with the sulfuric acid of 2M concentration according to 5% solid-to-liquid ratio is mixed, obtains mixture solution.
Step 3, leachate is obtained after mixture solution being stood 2h at 100 DEG C.
Step 4, leachate with cation exchange resin with 10% solid-to-liquid ratio is mixed, obtains mixed liquor.
Step 5, mixed liquor is stirred into 2h in 200rpm and at room temperature using constant temperature oscillator, after stirring stops, using true
Heavy metal in air filter filtering solution, obtains filtered fluid.
Step 6, by filtered fluid and ammonium hydroxide and magnesium hydroxide with P:N:Mg=1:3:4 molar ratio mixing, and stand
For 24 hours, sediment phosphorus-containing compound VII is obtained.
Sediment phosphorus-containing compound I to sediment phosphorus-containing compound VII extracted amount result as shown in table 1.
1 sediment phosphorus-containing compound I of table to sediment phosphorus-containing compound VII characterization result
The effect of embodiment
As shown in table 1, the extracted amount of sediment phosphorus prepared in embodiment one to embodiment five in the range of 0.1-1M with
It the increase of sulfuric acid concentration and gradually increases, the extracted amount of sediment phosphorus prepared by embodiment five to embodiment seven is in 1-2M ranges
It is interior to be gradually reduced with the increase of sulfuric acid concentration, illustrate that the sediment for preparing contains in the embodiment five when sulfuric acid concentration is 1M
The extracted amount of phosphorus compound V is maximum, is 63%.
According to the experimental result of the present embodiment one to seven it is found that can be extracted in the range of 0.1-2M when sulfuric acid concentration
The extracted amount of phosphorus is higher, and the extracted amount of the phosphorus when sulfuric acid concentration is 1M reaches maximum.The present embodiment one to seven refer to one
The method that kind handles municipal sludge extraction phosphorus by the acid-hatching of young eggs, using municipal sludge, by pretreatment, (dehydration thickens, anaerobism disappears
Change and dry), mix, stand, remixing, stirring, filtering, remixing, standing these processes again and obtain sediment phosphorus, this method
Technological process it is simple, it is high to recycle valuable phosphorus yield in sludge for processing time is short.In addition, use municipal sludge for
Raw material not only reduces production cost, and municipal sludge can be made to obtain good recycling, preferably solves and certainly passes
Processing mode of uniting pollution environment, the problems such as valuable substance yield is few, have weight in being rationally effectively treated of municipal sludge
The realistic meaning and economic value wanted.
Preferred case of the above embodiment for the present invention, is not intended to limit protection scope of the present invention.
Claims (8)
- A kind of 1. method that municipal sludge extraction phosphorus is handled by the acid-hatching of young eggs, which is characterized in that include the following steps：Step 1, municipal sludge is weighed, dehydration thickening, anaerobic digestion and drying are carried out to it successively, obtains dry sludge；Step 2, the dry sludge with certain density sulfuric acid according to certain first solid-to-liquid ratio is mixed, it is molten obtains mixture Liquid；Step 3, leachate is obtained after the mixture solution being stood certain first time at a certain temperature；Step 4, the leachate with cation exchange resin with certain second solid-to-liquid ratio is mixed, obtains mixed liquor；Step 5, the mixed liquor is stirred into certain rotating speed and at room temperature certain second time using constant temperature oscillator, stirring stops After only, using the heavy metal in vacuum filter filtering solution, filtered fluid is obtained；Step 6, when the filtered fluid is mixed with ammonium hydroxide and magnesium hydroxide with certain molar ratio, and stand certain third Between, sediment is obtained, which is phosphorus-containing compound,Wherein, a certain concentration of the sulfuric acid in the step 2 is 0.1-2M.
- 2. the method according to claim 1 that municipal sludge extraction phosphorus is handled by the acid-hatching of young eggs, it is characterised in that：Wherein, a certain concentration of the sulfuric acid in the step 2 is 0.5-1M.
- 3. the method according to claim 1 that municipal sludge extraction phosphorus is handled by the acid-hatching of young eggs, it is characterised in that：Wherein, a certain concentration of the sulfuric acid in the step 2 is 1M.
- 4. the method according to claim 1 that municipal sludge extraction phosphorus is handled by the acid-hatching of young eggs, it is characterised in that：Wherein, certain first solid-to-liquid ratio is 5%.
- 5. the method according to claim 1 that municipal sludge extraction phosphorus is handled by the acid-hatching of young eggs, it is characterised in that：Wherein, the certain temperature in the step 3 is 100 DEG C, and certain first time is 2h.
- 6. the method according to claim 1 that municipal sludge extraction phosphorus is handled by the acid-hatching of young eggs, it is characterised in that：Wherein, certain second solid-to-liquid ratio in the step 4 is 10%.
- 7. the method according to claim 1 that municipal sludge extraction phosphorus is handled by the acid-hatching of young eggs, it is characterised in that：Wherein, certain rotating speed in the step 5 is 200rpm, and certain second time in the step 5 is 2h.
- 8. the method according to claim 1 that municipal sludge extraction phosphorus is handled by the acid-hatching of young eggs, it is characterised in that：Wherein, certain molar ratio in the step 6 is P:N:Mg=1:3:4, certain third time is for 24 hours.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810047231.6A CN108191182A (en) | 2018-01-18 | 2018-01-18 | A kind of method that municipal sludge extraction phosphorus is handled by the acid-hatching of young eggs |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810047231.6A CN108191182A (en) | 2018-01-18 | 2018-01-18 | A kind of method that municipal sludge extraction phosphorus is handled by the acid-hatching of young eggs |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108910849A (en) * | 2018-07-23 | 2018-11-30 | 四川大学 | A method of circulation extracts phosphorus from sludge ash |
| CN116984344A (en) * | 2023-08-03 | 2023-11-03 | 中国铁工投资建设集团有限公司 | Recovery method of phosphorus in sludge pyrolysis residue and application of residual residue |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101695999A (en) * | 2009-10-23 | 2010-04-21 | 宁波工程学院 | Method for recovering nutritive materials of phosphorus and nitrogen from sewage and sludge |
| CN101723345A (en) * | 2010-01-05 | 2010-06-09 | 大连理工大学 | Method for recovering phosphorus from phosphorus containing sludge |
| CN103193370A (en) * | 2013-03-30 | 2013-07-10 | 中山大学 | Phosphorus recovery device for excess sludge |
| DE102016112300A1 (en) * | 2016-07-05 | 2018-01-11 | Werner Maier | Process for the treatment of phosphate-containing sewage sludge |
-
2018
- 2018-01-18 CN CN201810047231.6A patent/CN108191182A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101695999A (en) * | 2009-10-23 | 2010-04-21 | 宁波工程学院 | Method for recovering nutritive materials of phosphorus and nitrogen from sewage and sludge |
| CN101723345A (en) * | 2010-01-05 | 2010-06-09 | 大连理工大学 | Method for recovering phosphorus from phosphorus containing sludge |
| CN103193370A (en) * | 2013-03-30 | 2013-07-10 | 中山大学 | Phosphorus recovery device for excess sludge |
| DE102016112300A1 (en) * | 2016-07-05 | 2018-01-11 | Werner Maier | Process for the treatment of phosphate-containing sewage sludge |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108910849A (en) * | 2018-07-23 | 2018-11-30 | 四川大学 | A method of circulation extracts phosphorus from sludge ash |
| CN116984344A (en) * | 2023-08-03 | 2023-11-03 | 中国铁工投资建设集团有限公司 | Recovery method of phosphorus in sludge pyrolysis residue and application of residual residue |
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Application publication date: 20180622 |