CN110156198A - A method of sewage is handled using digester - Google Patents
A method of sewage is handled using digester Download PDFInfo
- Publication number
- CN110156198A CN110156198A CN201810122892.0A CN201810122892A CN110156198A CN 110156198 A CN110156198 A CN 110156198A CN 201810122892 A CN201810122892 A CN 201810122892A CN 110156198 A CN110156198 A CN 110156198A
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- Prior art keywords
- digester
- sewage
- percolation tank
- flocculation stirring
- suspension
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/288—Treatment of water, waste water, or sewage by sorption using composite sorbents, e.g. coated, impregnated, multi-layered
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention relates to a kind of methods using digester processing sewage.Sewage is first pre-processed, digester is pre-processed, sewage and digester suspension are incorporated to addition in flocculation stirring slot, flocculation stirring slot is connected to concentrator, concentrator water outlet enters back into percolation tank, fills digester in the percolation tank, concentrator water outlet from percolation tank one end into, it is brought out from percolation tank is another, while being passed through ozone gas in the bottom of percolation tank；When the solid content in flocculation stirring slot is greater than 200g/L, flocculant, stirring is added, then flocculation stirring slot is extracted out and is filtered, the filtrate being obtained by filtration goes successively in percolation tank, and filter residue is returned after regeneration and used, and the flocculation stirring slot vacated continuously adds sewage and digester suspension；After digester saturation to be adsorbed in percolation tank, after digester pretreating process, return is continued to use.The present invention can reduce the usage amount of digester, easy to operate, the high treating effect of sewage.
Description
Technical field
The present invention relates to a kind of methods using digester processing sewage, belong to environmental technology field.
Background technique
Microenvironment refers to public transport environment inside car, environment in subway, hires out environment inside car, domestic environment and all public fields
The environment of conjunction." microenvironment " contacted at any time in our daily lifes, for example, just renovated new family, father secondhand smoke, new
Love vehicle started with etc..These microenvironments are easy to produce the pollutants such as dust, formaldehyde, ozone, and harmfulness is no less than overall situation
The pollutants such as haze.
Microenvironment pollution is administered using digester, is had many advantages, such as that regulation effect is obvious, the service life is long, but how to be realized
Digester handles sewage, becomes the focus of everybody research, because digester is mainly aoxidized by active carbon, diatomite, metal
The mixture of the compositions such as object catalyst and calcium carbonate has huge application prospect in terms of handling sewage.
Summary of the invention
In view of this, making for digester can be reduced the present invention provides a kind of method using digester processing sewage
Dosage, easy to operate, the high treating effect of sewage.
The technical solution adopted by the present invention to solve the technical problems is:
A method of sewage being handled using digester, is following steps:
(1) pretreatment of sewage, sewage is stirred evenly, and the pH that acid-base accommodation solution is then added is 8.5-9.5；
(2) sodium hydroxide solution is added in digester by the pretreatment of digester, is 50-70 DEG C of stirring 15- in temperature
Then 60min is filtered, it is 6-8 that salt acid elution, which is added, to washing water pH, and a part of digester is by filtering spare, another part
Digester adds water slurryization in suspension；
(3) sewage and digester suspension are incorporated to addition in flocculation stirring slot, while maintaining mixing speed is 20-
40r/min, flocculation stirring slot are connected to concentrator, and concentrator water outlet enters back into percolation tank, are filled and are disappeared in the percolation tank
Change device, concentrator water outlet is from percolation tank one end into bringing out from percolation tank is another, while being passed through ozone gas in the bottom of percolation tank
Body；
(4) when the solid content in flocculation stirring slot is greater than 200g/L, flocculant is added, stirs 10-15min, then will
Flocculation stirring slot is extracted out and is filtered, and the filtrate being obtained by filtration goes successively in percolation tank, filter residue return step after regeneration
(2), the flocculation stirring slot vacated continuously adds sewage and digester suspension；
(5) it after the digester saturation to be adsorbed in percolation tank, after step (2) digester pretreating process, returns and seeps
It is continued to use in filter pocket.
The sewage is the waste water containing heavy metal, oil content and phosphorus.
The concentration of sodium hydroxide solution is 2-4mol/L, the quality of digester and sodium hydroxide solution in the step (2)
Than for 1:3-4, the concentration of digester is 5-10g/L in suspension.
The volume flow ratio of sewage and digester suspension is 5-10:1 in the step (3), and sewage is in flocculation stirring slot
Residence time be 3-5min, concentrator residence time of the water outlet in percolation tank is 10-20min, and ozone gas is hourly
Additional amount is 3-5 times of percolation tank volume.
The concentration that flocculant is added in the step (4) is 0.01-0.1g/L, and flocculant is polyaluminium chloride, polyaluminum sulfate
At least one of iron, the volume of the flocculant of addition are 0.001-0.002 times of sewage volume in flocculation stirring slot.
Judge that the method for digester adsorption saturation is the digester in percolation tank to be taken sample, then in the step (5)
It is put into waste water, it is 1:3-4 that digester, which takes the mass ratio of sample and waste water, stirs 15min, and the heavy metal concentration in waste water is reduced
Amount is less than 0.2mg/L, then judges that digester absorption has reached saturation.
The present invention is in such a way that waste water and digester is added in cocurrent, when can reduce the stop of waste water to the greatest extent
Between, while the solid content in flocculation stirring slot is constantly concentrated using concentrator, flocculation stirring can be improved to the greatest extent
The sewage treatment capacity of slot, while the adsorption capacity of digester is played to the greatest extent, then by the water outlet of concentrator by seeping
Filter pocket further progress adsorption treatment, while ozone is added and carries out disinfection and aoxidizes, so that water treatment effect is more preferable.
The invention has the following beneficial effects: the usage amount of digester can be reduced, easy to operate, the high treating effect of sewage.
Specific embodiment
Presently in connection with embodiment, specifically the present invention is described in further detail.
A method of sewage being handled using digester, is following steps:
(1) pretreatment of sewage, sewage is stirred evenly, and the pH that acid-base accommodation solution is then added is 8.5-9.5；
(2) sodium hydroxide solution is added in digester by the pretreatment of digester, is 50-70 DEG C of stirring 15- in temperature
Then 60min is filtered, it is 6-8 that salt acid elution, which is added, to washing water pH, and a part of digester is by filtering spare, another part
Digester adds water slurryization in suspension；
(3) sewage and digester suspension are incorporated to addition in flocculation stirring slot, while maintaining mixing speed is 20-
40r/min, flocculation stirring slot are connected to concentrator, and concentrator water outlet enters back into percolation tank, are filled and are disappeared in the percolation tank
Change device, concentrator water outlet is from percolation tank one end into bringing out from percolation tank is another, while being passed through ozone gas in the bottom of percolation tank
Body；
(4) when the solid content in flocculation stirring slot is greater than 200g/L, flocculant is added, stirs 10-15min, then will
Flocculation stirring slot is extracted out and is filtered, and the filtrate being obtained by filtration goes successively in percolation tank, filter residue return step after regeneration
(2), the flocculation stirring slot vacated continuously adds sewage and digester suspension；
(5) it after the digester saturation to be adsorbed in percolation tank, after step (2) digester pretreating process, returns and seeps
It is continued to use in filter pocket.
The sewage is the waste water containing heavy metal, oil content and phosphorus.
The concentration of sodium hydroxide solution is 2-4mol/L, the quality of digester and sodium hydroxide solution in the step (2)
Than for 1:3-4, the concentration of digester is 5-10g/L in suspension.
The volume flow ratio of sewage and digester suspension is 5-10:1 in the step (3), and sewage is in flocculation stirring slot
Residence time be 3-5min, concentrator residence time of the water outlet in percolation tank is 10-20min, and ozone gas is hourly
Additional amount is 3-5 times of percolation tank volume.
The concentration that flocculant is added in the step (4) is 0.01-0.1g/L, and flocculant is polyaluminium chloride, polyaluminum sulfate
At least one of iron, the volume of the flocculant of addition are 0.001-0.002 times of sewage volume in flocculation stirring slot.
Judge that the method for digester adsorption saturation is the digester in percolation tank to be taken sample, then in the step (5)
It is put into waste water, it is 1:3-4 that digester, which takes the mass ratio of sample and waste water, stirs 15min, and the heavy metal concentration in waste water is reduced
Amount is less than 0.2mg/L, then judges that digester absorption has reached saturation.
Embodiment one
A method of sewage being handled using digester, is following steps:
(1) pretreatment of sewage, sewage is stirred evenly, and the pH that acid-base accommodation solution is then added is 8.96；
(2) sodium hydroxide solution is added in digester by the pretreatment of digester, is 65 DEG C of stirring 25min in temperature, then
Filtering, it is 7.3 that salt acid elution, which is added, to washing water pH, and a part of digester is spare by filtering, and another part digester adds water
Pulp is in suspension；
(3) sewage and digester suspension are incorporated to addition in flocculation stirring slot, while maintaining mixing speed is 35r/
Min, flocculation stirring slot are connected to concentrator, and concentrator water outlet enters back into percolation tank, fill digester in the percolation tank,
Concentrator water outlet is from percolation tank one end into bringing out from percolation tank is another, while being passed through ozone gas in the bottom of percolation tank；
(4) when the solid content in flocculation stirring slot is greater than 200g/L, flocculant is added, stirs 12min, it then will flocculation
Stirred tank is extracted out and is filtered, and the filtrate being obtained by filtration goes successively in percolation tank, filter residue return step (2) after regeneration, empty
Flocculation stirring slot out continuously adds sewage and digester suspension；
(5) it after the digester saturation to be adsorbed in percolation tank, after step (2) digester pretreating process, returns and seeps
It is continued to use in filter pocket.
The sewage is the waste water containing heavy metal, oil content and phosphorus.
The concentration of sodium hydroxide solution is 3.2mol/L, the quality of digester and sodium hydroxide solution in the step (2)
Than for 1:3.5, the concentration of digester is 8g/L in suspension.
The volume flow ratio of sewage and digester suspension is 8:1 in the step (3), and sewage stops flocculation stirring slot
Staying the time is 4.5min, and residence time of the concentrator water outlet in percolation tank is 15min, and ozone gas additional amount hourly is
4 times of percolation tank volume.
The concentration that flocculant is added in the step (4) is 0.05g/L, and flocculant is polyaluminium chloride, in bodied ferric sulfate
At least one, the volume of the flocculant of addition is 0.0013 times of sewage volume in flocculation stirring slot.
Judge that the method for digester adsorption saturation is the digester in percolation tank to be taken sample, then in the step (5)
It is put into waste water, it is 1:3.5 that digester, which takes the mass ratio of sample and waste water, stirs 15min, and the heavy metal concentration in waste water is reduced
Amount is less than 0.2mg/L, then judges that digester absorption has reached saturation.
Embodiment two
A method of sewage being handled using digester, is following steps:
(1) pretreatment of sewage, sewage is stirred evenly, and the pH that acid-base accommodation solution is then added is 9.2；
(2) sodium hydroxide solution is added in digester by the pretreatment of digester, is 65 DEG C of stirring 30min in temperature, then
Filtering, it is 7.5 that salt acid elution, which is added, to washing water pH, and a part of digester is spare by filtering, and another part digester adds water
Pulp is in suspension；
(3) sewage and digester suspension are incorporated to addition in flocculation stirring slot, while maintaining mixing speed is 35r/
Min, flocculation stirring slot are connected to concentrator, and concentrator water outlet enters back into percolation tank, fill digester in the percolation tank,
Concentrator water outlet is from percolation tank one end into bringing out from percolation tank is another, while being passed through ozone gas in the bottom of percolation tank；
(4) when the solid content in flocculation stirring slot is greater than 200g/L, flocculant is added, stirs 13min, it then will flocculation
Stirred tank is extracted out and is filtered, and the filtrate being obtained by filtration goes successively in percolation tank, filter residue return step (2) after regeneration, empty
Flocculation stirring slot out continuously adds sewage and digester suspension；
(5) it after the digester saturation to be adsorbed in percolation tank, after step (2) digester pretreating process, returns and seeps
It is continued to use in filter pocket.
The sewage is the waste water containing heavy metal, oil content and phosphorus.
The concentration of sodium hydroxide solution is 3.0mol/L, the quality of digester and sodium hydroxide solution in the step (2)
Than for 1:3.3, the concentration of digester is 7.5g/L in suspension.
The volume flow ratio of sewage and digester suspension is 9:1 in the step (3), and sewage stops flocculation stirring slot
Staying the time is 3.5min, and residence time of the concentrator water outlet in percolation tank is 13min, and ozone gas additional amount hourly is
4 times of percolation tank volume.
The concentration that flocculant is added in the step (4) is 0.04g/L, and flocculant is polyaluminium chloride, in bodied ferric sulfate
At least one, the volume of the flocculant of addition is 0.0014 times of sewage volume in flocculation stirring slot.
Judge that the method for digester adsorption saturation is the digester in percolation tank to be taken sample, then in the step (5)
It is put into waste water, it is 1:3.5 that digester, which takes the mass ratio of sample and waste water, stirs 15min, and the heavy metal concentration in waste water is reduced
Amount is less than 0.2mg/L, then judges that digester absorption has reached saturation.
Embodiment 3
A method of sewage being handled using digester, is following steps:
(1) pretreatment of sewage, sewage is stirred evenly, and the pH that acid-base accommodation solution is then added is 9.2；
(2) sodium hydroxide solution is added in digester by the pretreatment of digester, is 55 DEG C of stirring 35min in temperature, then
Filtering, it is 7.5 that salt acid elution, which is added, to washing water pH, and a part of digester is spare by filtering, and another part digester adds water
Pulp is in suspension；
(3) sewage and digester suspension are incorporated to addition in flocculation stirring slot, while maintaining mixing speed is 35r/
Min, flocculation stirring slot are connected to concentrator, and concentrator water outlet enters back into percolation tank, fill digester in the percolation tank,
Concentrator water outlet is from percolation tank one end into bringing out from percolation tank is another, while being passed through ozone gas in the bottom of percolation tank；
(4) when the solid content in flocculation stirring slot is greater than 200g/L, flocculant is added, stirs 14min, it then will flocculation
Stirred tank is extracted out and is filtered, and the filtrate being obtained by filtration goes successively in percolation tank, filter residue return step (2) after regeneration, empty
Flocculation stirring slot out continuously adds sewage and digester suspension；
(5) it after the digester saturation to be adsorbed in percolation tank, after step (2) digester pretreating process, returns and seeps
It is continued to use in filter pocket.
The sewage is the waste water containing heavy metal, oil content and phosphorus.
The concentration of sodium hydroxide solution is 3.5mol/L, the quality of digester and sodium hydroxide solution in the step (2)
Than for 1:3.8, the concentration of digester is 9g/L in suspension.
The volume flow ratio of sewage and digester suspension is 9:1 in the step (3), and sewage stops flocculation stirring slot
Staying the time is 4.5min, and residence time of the concentrator water outlet in percolation tank is 18min, and ozone gas additional amount hourly is
4.5 times of percolation tank volume.
The concentration that flocculant is added in the step (4) is 0.06g/L, and flocculant is polyaluminium chloride, in bodied ferric sulfate
At least one, the volume of the flocculant of addition is 0.0017 times of sewage volume in flocculation stirring slot.
Judge that the method for digester adsorption saturation is the digester in percolation tank to be taken sample, then in the step (5)
It is put into waste water, it is 1:3.8 that digester, which takes the mass ratio of sample and waste water, stirs 15min, and the heavy metal concentration in waste water is reduced
Amount is less than 0.2mg/L, then judges that digester absorption has reached saturation.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this
In the scope of the claims of invention.
Claims (6)
1. a kind of method using digester processing sewage, which is characterized in that be following steps:
(1) pretreatment of sewage, sewage is stirred evenly, and the pH that acid-base accommodation solution is then added is 8.5-9.5；
(2) sodium hydroxide solution is added in digester by the pretreatment of digester, is 50-70 DEG C of stirring 15-60min in temperature, so
After filter, it is 6-8 that salt acid elution, which is added, to washing water pH, and a part of digester is spare by filtering, and another part digester adds
Water slurryization is in suspension；
(3) sewage and digester suspension are incorporated to addition in flocculation stirring slot, while maintaining mixing speed is 20-40r/
Min, flocculation stirring slot are connected to concentrator, and concentrator water outlet enters back into percolation tank, fill digester in the percolation tank,
Concentrator water outlet is from percolation tank one end into bringing out from percolation tank is another, while being passed through ozone gas in the bottom of percolation tank；
(4) when the solid content in flocculation stirring slot is greater than 200g/L, flocculant is added, stirs 10-15min, it then will flocculation
Stirred tank is extracted out and is filtered, and the filtrate being obtained by filtration goes successively in percolation tank, filter residue return step (2) after regeneration, empty
Flocculation stirring slot out continuously adds sewage and digester suspension；
(5) after the digester saturation to be adsorbed in percolation tank, after step (2) digester pretreating process, percolation tank is returned to
Inside continue to use.
2. a kind of method using digester processing sewage as described in claim 1, which is characterized in that the sewage be containing
The waste water of heavy metal, oil content and phosphorus.
3. a kind of method using digester processing sewage as described in claim 1, which is characterized in that in the step (2)
The concentration of sodium hydroxide solution is 2-4mol/L, and the mass ratio of digester and sodium hydroxide solution is 1:3-4, is digested in suspension
The concentration of device is 5-10g/L.
4. a kind of method using digester processing sewage as described in claim 1, which is characterized in that in the step (3)
The volume flow ratio of sewage and digester suspension is 5-10:1, and sewage is 3-5min in the residence time of flocculation stirring slot, dense
Residence time of the close machine water outlet in percolation tank is 10-20min, and ozone gas additional amount hourly is the 3- of percolation tank volume
5 times.
5. a kind of method using digester processing sewage as described in claim 1, which is characterized in that in the step (4)
Be added flocculant concentration be 0.01-0.1g/L, flocculant be at least one of polyaluminium chloride, bodied ferric sulfate, addition
The volume of flocculant is 0.001-0.002 times of sewage volume in flocculation stirring slot.
6. a kind of method using digester processing sewage as described in claim 1, which is characterized in that in the step (5)
The method for judging digester adsorption saturation is that the digester in percolation tank is taken sample, is then placed in waste water, digester sampling
The mass ratio of product and waste water is 1:3-4, stirs 15min, and the heavy metal concentration reduction amount in waste water is less than 0.2mg/L, then judges
Digester absorption has reached saturation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810122892.0A CN110156198A (en) | 2018-02-07 | 2018-02-07 | A method of sewage is handled using digester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810122892.0A CN110156198A (en) | 2018-02-07 | 2018-02-07 | A method of sewage is handled using digester |
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| Publication Number | Publication Date |
|---|---|
| CN110156198A true CN110156198A (en) | 2019-08-23 |
Family
ID=67641050
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| CN201810122892.0A Pending CN110156198A (en) | 2018-02-07 | 2018-02-07 | A method of sewage is handled using digester |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2529196A1 (en) * | 1975-07-01 | 1977-02-03 | Karl Rolf Dipl Chem D Dietrich | Combined physico-chemical removal of oxygen consuming materials - from water streams having physical and ozone stages |
| CN101811028A (en) * | 2009-02-23 | 2010-08-25 | 金华职业技术学院 | Modified pomelo peel metal absorbent and preparation method thereof |
| CN105540921A (en) * | 2015-12-22 | 2016-05-04 | 湖南森美思环保有限责任公司 | Method for removing thallium in wastewater |
| CN205419978U (en) * | 2015-11-24 | 2016-08-03 | 滨州学院 | City regeneration water treatment facilities |
-
2018
- 2018-02-07 CN CN201810122892.0A patent/CN110156198A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2529196A1 (en) * | 1975-07-01 | 1977-02-03 | Karl Rolf Dipl Chem D Dietrich | Combined physico-chemical removal of oxygen consuming materials - from water streams having physical and ozone stages |
| CN101811028A (en) * | 2009-02-23 | 2010-08-25 | 金华职业技术学院 | Modified pomelo peel metal absorbent and preparation method thereof |
| CN205419978U (en) * | 2015-11-24 | 2016-08-03 | 滨州学院 | City regeneration water treatment facilities |
| CN105540921A (en) * | 2015-12-22 | 2016-05-04 | 湖南森美思环保有限责任公司 | Method for removing thallium in wastewater |
Non-Patent Citations (2)
| Title |
|---|
| 姚仲鹏: "《空气净化原理、设计与应用》", 30 September 2014, 中国科学技术出版社 * |
| 高福成: "《食品分离重组工程技术》", 31 July 1998, 中国轻工业出版社 * |
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Application publication date: 20190823 |