CN113307454A - Novel process for domestic sewage treatment - Google Patents
Novel process for domestic sewage treatment Download PDFInfo
- Publication number
- CN113307454A CN113307454A CN202110670373.XA CN202110670373A CN113307454A CN 113307454 A CN113307454 A CN 113307454A CN 202110670373 A CN202110670373 A CN 202110670373A CN 113307454 A CN113307454 A CN 113307454A
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- China
- Prior art keywords
- domestic sewage
- filter
- sewage treatment
- filter plate
- sludge
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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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- 239000010865 sewage Substances 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000004062 sedimentation Methods 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000005273 aeration Methods 0.000 claims abstract description 17
- 238000001914 filtration Methods 0.000 claims abstract description 17
- 230000007062 hydrolysis Effects 0.000 claims abstract description 13
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 13
- 238000001556 precipitation Methods 0.000 claims abstract description 11
- 239000010802 sludge Substances 0.000 claims description 24
- 239000007787 solid Substances 0.000 claims description 5
- 230000001954 sterilising effect Effects 0.000 claims description 4
- 238000004378 air conditioning Methods 0.000 claims description 3
- 238000005119 centrifugation Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 239000008394 flocculating agent Substances 0.000 claims description 3
- 230000020477 pH reduction Effects 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 230000001376 precipitating effect Effects 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005457 optimization Methods 0.000 abstract 2
- 206010021143 Hypoxia Diseases 0.000 abstract 1
- 239000002689 soil Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
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
- C02F11/00—Treatment of sludge; Devices therefor
-
- 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
- C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F7/00—Aeration of stretches of water
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Centrifugal Separators (AREA)
Abstract
The invention provides a novel process for treating domestic sewage, and relates to the technical field of domestic sewage treatment. The novel process for treating the domestic sewage comprises the following steps: s1, filtering pretreatment: s2, primary precipitation: s3, hydrolysis: s4, aeration treatment: and S5, secondary precipitation, and optimization of each process. Through reasonable optimization sewage treatment process, adopt neotype filter, be provided with sedimentation tank A and sedimentation tank B alternate use, the water after will hydrolysising is sent into the aeration tank, passes through oxygen deficiency-good foster-air bath in proper order, and the internal time that stops at every aeration tank is no less than 1H, under the condition of the effect of assurance sewage treatment, the efficiency of improvement sewage treatment that can be very big, and one sedimentation tank need not set up very greatly moreover, saving factory building space more with the effluent water sump that current technology adopted.
Description
Technical Field
The invention relates to the technical field of domestic sewage treatment, in particular to a novel process for domestic sewage treatment.
Background
The acceleration of urbanization progress makes the domestic sewage discharge of city also bigger and bigger, if can not be fine handle, can cause unrecoverable destruction to the ecological environment near the outlet, can also carry out secondary processing after handling domestic sewage and use moreover, is the source of an important water resource to the city of lack of water.
The existing sewage treatment process is incomplete, the sedimentation treatment is carried out in a larger sedimentation tank, and if the sedimentation tank is smaller, the sewage treatment effect is influenced.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a novel process for domestic sewage treatment, and solves the problems that the existing sewage treatment process is incomplete, and the treatment efficiency depends on the size of a treatment plant.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a novel process for domestic sewage treatment, comprising the following steps:
s1, filtering pretreatment:
filtering the collected domestic sewage to filter out particle solids in the water;
s2, primary precipitation:
precipitating the domestic sewage after the filtration pretreatment, wherein a sedimentation tank A and a sedimentation tank B are arranged for alternate use, and a flocculating agent is added in the process of precipitation;
s3, hydrolysis:
pumping the precipitated water into a hydrolysis tank for hydrolysis acidification treatment, wherein the hydrolysis time is kept at 2.5-3.2H;
s4, aeration treatment:
feeding the hydrolyzed water into aeration tanks, and sequentially passing through anoxic-aerobic-air-conditioning tanks to stay in each aeration tank for not less than 1H;
s5, secondary precipitation:
and (4) feeding the water after the aeration treatment into a secondary sedimentation tank, and discharging or further treating and utilizing the water after sedimentation.
Preferably, the method further comprises the following steps: sludge treatment, comprising the steps of:
collecting sludge generated by filtration pretreatment, a sedimentation tank A, a sedimentation tank B and secondary sedimentation in a sludge tank;
step two, carrying out centrifugal concentration on the collected sludge;
and step three, sterilizing the centrifugally concentrated sludge.
Preferably, the centrifugal concentration mode is as follows: the inner side wall of the centrifugal separator is provided with a precision filter layer, so that water in the sludge is thrown away during centrifugation, and the sludge is rotated into a plurality of small spherical shapes.
Preferably, the filter plate used in the filtration pretreatment in S1 includes: the frame, a side opening of frame forms side frame mouth, the inboard of side frame mouth is provided with the baffle, the baffle is the slope setting, the first filter of inboard fixedly connected with, the second filter of frame, the rectangle mouth has been seted up to the side of first filter, swing joint has the bottom fender between first filter and the second filter, the side of frame just is located and has seted up the drain between first filter and the second filter, the one end of bottom fender stretches out from the drain, the lateral surface fixedly connected with fixed plate of frame, be connected through fixed connecting rod between bottom fixed plate and the bottom fender.
Preferably, the side surface of the bottom mudguard is provided with a groove-shaped connecting hole.
Preferably, the bottom end of the fixed connecting rod penetrates through the groove-shaped connecting hole and is fixedly connected with an end head, and the side face of the fixed connecting rod and the position above the fixed plate are in threaded connection with a nut.
Preferably, the first filter plate has a filter hole diameter larger than that of the second filter plate.
(III) advantageous effects
The invention provides a novel process for domestic sewage treatment. The method has the following beneficial effects:
1. according to the invention, through reasonably optimizing a sewage treatment process, a novel filter plate is adopted, the sedimentation tank A and the sedimentation tank B are arranged for alternate use, hydrolyzed water is fed into the aeration tanks and sequentially passes through the anoxic-aerobic-air tank, and stays in each aeration tank for not less than 1H, so that the sewage treatment efficiency can be greatly improved under the condition of ensuring the sewage treatment effect, and the primary sedimentation tank does not need to be arranged greatly, so that the factory space is saved compared with a sewage tank adopted by the existing process.
2. According to the invention, two groups of filter plates are arranged side by side, so that twice filtering is directly completed, the efficiency of sewage pretreatment can be greatly increased, and the bottom is provided with the bottom mudguard and the sewage outlet structure, so that filtered sludge can be conveniently discharged, and the use is very convenient.
3. According to the invention, the sludge treatment process is adopted, the solid soil is obtained by directly adopting a centrifugal concentration method, and then the solid soil can be directly transferred to the next step for treatment after sterilization treatment, so that the method is very convenient.
Drawings
FIG. 1 is a process flow diagram of the present invention;
FIG. 2 is a schematic view of a filter plate structure according to the present invention;
fig. 3 is a front view of the filter plate of the present invention.
Wherein, 1, a frame; 2. a side frame opening; 3. a guide plate; 4. a rectangular opening; 5. a first filter plate; 6. a second filter plate; 7. a bottom fender; 701. a groove-shaped connecting hole; 8. a sewage draining outlet; 9. a fixing plate; 10. a fixed connecting rod; 101. a tip; 102. and a nut.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
as shown in fig. 1, an embodiment of the present invention provides a novel process for domestic sewage treatment, including the following steps:
s1, filtering pretreatment:
filtering the collected domestic sewage to filter out particle solids in the water;
s2, primary precipitation:
precipitating the domestic sewage after the filtration pretreatment, wherein a sedimentation tank A and a sedimentation tank B are arranged for alternate use, and a flocculating agent is added in the process of precipitation;
s3, hydrolysis:
pumping the precipitated water into a hydrolysis tank for hydrolysis acidification treatment, wherein the hydrolysis time is kept at 2.5-3.2H;
s4, aeration treatment:
feeding the hydrolyzed water into aeration tanks, and sequentially passing through anoxic-aerobic-air-conditioning tanks to stay in each aeration tank for not less than 1H;
s5, secondary precipitation:
and (4) feeding the water after the aeration treatment into a secondary sedimentation tank, and discharging or further treating and utilizing the water after sedimentation.
Further comprising: sludge treatment, comprising the steps of:
collecting sludge generated by filtration pretreatment, a sedimentation tank A, a sedimentation tank B and secondary sedimentation in a sludge tank;
step two, carrying out centrifugal concentration on the collected sludge;
and step three, sterilizing the centrifugally concentrated sludge.
The centrifugal concentration mode is as follows: the inner side wall of the centrifugal separator is provided with a precision filter layer, so that water in the sludge is thrown away during centrifugation, and the sludge is rotated into a plurality of small spherical shapes.
Example two:
as shown in fig. 2 to 3, the filter panel used in the filtering pretreatment in S1 includes: frame 1, a side opening of frame 1, form side frame mouth 2, side frame mouth 2's inboard is provided with baffle 3, baffle 3 is the slope setting, the first filter 5 of inboard fixedly connected with of frame 1, second filter 6, rectangle mouth 4 has been seted up to the side of first filter 5, swing joint has bottom fender 7 between first filter 5 and the second filter 6, the side of frame 1 just is located and has seted up drain 8 between first filter 5 and the second filter 6, the one end of bottom fender 7 stretches out from drain 8, the lateral surface fixedly connected with fixed plate 9 of frame 1, be connected through fixed connecting rod 10 between bottom fixed plate 9 and the bottom fender 7.
The side of the bottom mudguard 7 is provided with a groove-shaped connecting hole 701.
The bottom end of the fixed connecting rod 10 penetrates through the groove-shaped connecting hole 701 and is fixedly connected with an end head 101, and a nut 102 is in threaded connection with the side surface of the fixed connecting rod 10 and located above the fixed plate 9.
The diameter of the filter holes of the first filter plate 5 is larger than that of the second filter plate 6.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A novel process for domestic sewage treatment is characterized by comprising the following steps:
s1, filtering pretreatment:
filtering the collected domestic sewage to filter out particle solids in the water;
s2, primary precipitation:
precipitating the domestic sewage after the filtration pretreatment, wherein a sedimentation tank A and a sedimentation tank B are arranged for alternate use, and a flocculating agent is added in the process of precipitation;
s3, hydrolysis:
pumping the precipitated water into a hydrolysis tank for hydrolysis acidification treatment, wherein the hydrolysis time is kept at 2.5-3.2H;
s4, aeration treatment:
feeding the hydrolyzed water into aeration tanks, and sequentially passing through anoxic-aerobic-air-conditioning tanks to stay in each aeration tank for not less than 1H;
s5, secondary precipitation:
and (4) feeding the water after the aeration treatment into a secondary sedimentation tank, and discharging or further treating and utilizing the water after sedimentation.
2. The novel process for domestic sewage treatment according to claim 1, further comprising: sludge treatment, comprising the steps of:
collecting sludge generated by filtration pretreatment, a sedimentation tank A, a sedimentation tank B and secondary sedimentation in a sludge tank;
step two, carrying out centrifugal concentration on the collected sludge;
and step three, sterilizing the centrifugally concentrated sludge.
3. The novel process for domestic sewage treatment according to claim 2, wherein: the centrifugal concentration mode is as follows: the inner side wall of the centrifugal separator is provided with a precise filter layer, so that water in the sludge is thrown away during centrifugation, and the sludge is rotated into a plurality of sludge
The filter panel for a novel process of domestic sewage treatment according to claim 1, wherein the filter panel used for the filtration pretreatment in S1 comprises: a frame (1), one side surface of the frame (1) is opened to form a side surface frame opening (2), a guide plate (3) is arranged on the inner side of the side frame opening (2), the guide plate (3) is obliquely arranged, the inner side of the frame (1) is fixedly connected with a first filter plate (5) and a second filter plate (6), a rectangular opening (4) is arranged on the side surface of the first filter plate (5), a bottom mudguard (7) is movably connected between the first filter plate (5) and the second filter plate (6), a sewage draining outlet (8) is arranged on the side surface of the frame (1) and between the first filter plate (5) and the second filter plate (6), one end of the bottom mudguard (7) extends out of the sewage draining exit (8), the outer side surface of the frame (1) is fixedly connected with a fixing plate (9), the bottom fixing plate (9) is connected with the bottom mudguard (7) through a fixed connecting rod (10).
4. The filter plate for use in a novel process for domestic sewage treatment according to claim 4, wherein: and a groove-shaped connecting hole (701) is formed in the side surface of the bottom mudguard (7).
5. The filter plate for use in a novel process for domestic sewage treatment according to claim 5, wherein: the bottom end of the fixed connecting rod (10) penetrates through the groove-shaped connecting hole (701) and is fixedly connected with an end head (101), and the side face of the fixed connecting rod (10) and the position above the fixed plate (9) are in threaded connection with a nut (102).
6. The filter plate for use in a novel process for domestic sewage treatment according to claim 4, wherein: the diameter of the filter holes of the first filter plate (5) is larger than that of the filter holes of the second filter plate (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110670373.XA CN113307454A (en) | 2021-06-17 | 2021-06-17 | Novel process for domestic sewage treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110670373.XA CN113307454A (en) | 2021-06-17 | 2021-06-17 | Novel process for domestic sewage treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113307454A true CN113307454A (en) | 2021-08-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110670373.XA Pending CN113307454A (en) | 2021-06-17 | 2021-06-17 | Novel process for domestic sewage treatment |
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| CN (1) | CN113307454A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104843954A (en) * | 2015-06-09 | 2015-08-19 | 安徽利和水务有限公司 | Sewage treatment device and treatment method thereof for large-scale sewage treatment station |
| CN105585220A (en) * | 2016-01-27 | 2016-05-18 | 程冠华 | Urban sewage treatment system and purification method |
| CN107555733A (en) * | 2017-10-31 | 2018-01-09 | 安徽利和水务有限公司 | A kind of sewage water treatment method |
| CN212375144U (en) * | 2020-06-06 | 2021-01-19 | 宜兴市苏恒环保设备有限公司 | Filter device of spiral sludge dewatering machine |
-
2021
- 2021-06-17 CN CN202110670373.XA patent/CN113307454A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104843954A (en) * | 2015-06-09 | 2015-08-19 | 安徽利和水务有限公司 | Sewage treatment device and treatment method thereof for large-scale sewage treatment station |
| CN105585220A (en) * | 2016-01-27 | 2016-05-18 | 程冠华 | Urban sewage treatment system and purification method |
| CN107555733A (en) * | 2017-10-31 | 2018-01-09 | 安徽利和水务有限公司 | A kind of sewage water treatment method |
| CN212375144U (en) * | 2020-06-06 | 2021-01-19 | 宜兴市苏恒环保设备有限公司 | Filter device of spiral sludge dewatering machine |
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Application publication date: 20210827 |
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| RJ01 | Rejection of invention patent application after publication |