CN215288220U - Pig farm wastewater pretreatment system that blister excrement produced - Google Patents
Pig farm wastewater pretreatment system that blister excrement produced Download PDFInfo
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- CN215288220U CN215288220U CN202121199771.XU CN202121199771U CN215288220U CN 215288220 U CN215288220 U CN 215288220U CN 202121199771 U CN202121199771 U CN 202121199771U CN 215288220 U CN215288220 U CN 215288220U
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- pool
- membrane separation
- spiral
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- sludge dewatering
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- 239000002351 wastewater Substances 0.000 title claims abstract description 20
- 239000012528 membrane Substances 0.000 claims abstract description 58
- 238000000926 separation method Methods 0.000 claims abstract description 33
- 239000010802 sludge Substances 0.000 claims abstract description 25
- 210000003608 fece Anatomy 0.000 claims abstract description 24
- 239000010871 livestock manure Substances 0.000 claims abstract description 21
- 239000000919 ceramic Substances 0.000 claims abstract description 20
- 238000004065 wastewater treatment Methods 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000001914 filtration Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 9
- 230000002411 adverse Effects 0.000 abstract description 2
- 239000010865 sewage Substances 0.000 description 7
- 239000007787 solid Substances 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 238000004062 sedimentation Methods 0.000 description 5
- 230000018044 dehydration Effects 0.000 description 4
- 238000006297 dehydration reaction Methods 0.000 description 4
- 208000034699 Vitreous floaters Diseases 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000001471 micro-filtration Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 206010033799 Paralysis Diseases 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical group O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
A piggery wastewater pretreatment system generated by water-soaked manure comprises a grid pool, a membrane separation pool and a spiral-stacked sludge dewatering machine, wherein the grid pool is connected to the membrane separation pool, one outlet of the membrane separation pool is connected to the spiral-stacked sludge dewatering machine, the other outlet of the membrane separation pool is connected to a subsequent wastewater treatment system, and the spiral-stacked sludge dewatering machine is connected to the subsequent wastewater treatment system; a flat ceramic membrane filtering device is arranged in the membrane separation tank; the grid gap of the grid pool is 5 mm; a water pump is arranged between the outlet of the membrane separation tank and the inlet of the stacked spiral sludge dewatering machine. The invention solves the problems that the traditional pretreatment process has poor effect of removing suspended matters, and a large amount of suspended matters can generate adverse effects after entering a subsequent anaerobic and biochemical treatment system.
Description
Technical Field
The invention relates to the technical field of sewage purification, in particular to a pig farm wastewater pretreatment system generated in a water-soaked manure cleaning mode.
Background
The pig farm wastewater contains a large amount of floating materials and suspended matters such as leaves, feed particles, pig hair, pig manure and the like, and the pretreatment is needed to ensure the normal operation of a biochemical system in a main wastewater treatment system. The wastewater pretreatment is mainly to remove floaters and suspended matters so as to improve the overall effect of wastewater treatment and ensure the stability of the whole treatment system, otherwise, excessive floaters and suspended matters can cause the reduction of the treatment efficiency of a biochemical system, and the paralysis of the biochemical system can be caused in serious cases, so that the pretreatment has an important role in the wastewater treatment link.
The raw water property of the pig-raising wastewater is related to the manure cleaning mode. Common feces cleaning methods mainly include soaking feces in water and cleaning feces in dry state. The water-soaked manure is anaerobic fermentation for a period of time before the manure is discharged into a manure storage tank, wherein organic matters are degraded to a part. The COD concentration range of the waste water that this clear excrement mode produced is 15000 ~ 20000mg/L, and suspended solid concentration range is 15000 ~ 20000mg/L, and the suspended solid that the water bubble excrement technology produced adopts traditional pretreatment processes, if handles etc. through solid-liquid separation machine, air supporting machine, coagulating sedimentation tank, and it is not good to get rid of the effect, often still can have a large amount of suspended solids to get into follow-up anaerobism and biochemical treatment system, produces harmful effects. Therefore, the invention is very important for the pig farm wastewater pretreatment system generated by the mode of cleaning the manure with the water-soaked manure.
Disclosure of Invention
The invention aims to provide a pig farm wastewater pretreatment system generated by water-soaked manure, which solves the problems that the traditional pretreatment process has poor effect of removing suspended matters, and a large amount of suspended matters can generate adverse effects after entering a subsequent anaerobic and biochemical treatment system.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a piggery wastewater pretreatment process generated by water-soaked manure is characterized by comprising a grid pool, a membrane separation pool and a spiral-stacked sludge dewatering machine, wherein an outlet of the grid pool is connected to an inlet of the membrane separation pool, one outlet of the membrane separation pool is connected to an inlet of the spiral-stacked sludge dewatering machine, the other outlet of the membrane separation pool is connected to a subsequent wastewater treatment system, one outlet of the spiral-stacked sludge dewatering machine is connected to the subsequent wastewater treatment system, and the other outlet of the spiral-stacked sludge dewatering machine is connected to a manure stacking area; and a flat ceramic membrane filtering device is arranged in the membrane separation tank.
Further, the grid gap of the grid pool is 5 mm.
Furthermore, a water pump is arranged between the outlet of the membrane separation tank and the inlet of the stacked spiral sludge dewatering machine.
The invention has the beneficial effects that: the system provided by the invention replaces the traditional treatment mode of a solid-liquid separator and an air flotation machine by combining a flat ceramic membrane device with a mode of treating sewage by a stacked screw type sludge dewatering machine. The membrane separation tank is used for replacing a sedimentation tank, and the membrane separation technology belongs to physical forced separation, so that the concentration of suspended matters in the effluent after membrane separation is very low and is not influenced by factors such as water quality fluctuation, poor medicament reaction and the like, and only a small amount of flocculating agent needs to be added in the treatment process, so that the medicament cost is saved.
The invention will be explained in more detail below with reference to the drawings and examples.
Drawings
FIG. 1 is a flow chart of a pig farm wastewater pretreatment system generated by the seed manure of the invention.
Detailed Description
As shown in fig. 1, the system for pretreating pig farm wastewater generated by dunking manure comprises a grid pool, a membrane separation pool and a spiral-stacked sludge dewatering machine, wherein an outlet of the grid pool is connected to an inlet of the membrane separation pool, one outlet of the membrane separation pool is connected to an inlet of the spiral-stacked sludge dewatering machine, the other outlet of the membrane separation pool is connected to a subsequent wastewater treatment system, one outlet of the spiral-stacked sludge dewatering machine is connected to the subsequent wastewater treatment system, and the other outlet of the spiral-stacked sludge dewatering machine is connected to a manure stacking area; and a flat ceramic membrane filtering device is arranged in the membrane separation tank.
Further, in order to filter out large-particle impurities firstly and ensure that the grating pool is not easy to block, the grating gap of the grating pool is 5 mm.
Furthermore, in order to facilitate the discharge of sewage, a water pump is arranged between the outlet of the membrane separation tank and the inlet of the stacked spiral sludge dewatering machine.
The main material of the flat ceramic membrane is aluminum oxide, the hardness of the flat ceramic membrane is high, the flat ceramic membrane is difficult to wear, the nominal pore diameter is 50-100 nm, the flat ceramic membrane is a strong and effective microfiltration membrane, almost all suspended matters, 99% of bacteria and viruses can be removed, and the pressure of a subsequent treatment system can be relieved. The clear water channel of the flat ceramic membrane is large and is not easy to block, and compared with the membrane flux of 10-20L/(m 2 h) of a common organic membrane microfiltration membrane, the flat ceramic membrane has the membrane flux of 50-100L/(m 2 h), which is 2-5 times that of the common organic membrane. Meanwhile, the flat ceramic membrane is acid and alkali resistant, the pH range is 2-10, and excellent filtering performance can be shown in different environments.
Horizontal collecting pipes are arranged at the longitudinal two ends of the flat ceramic membrane filtering device, vertical collecting pipes are arranged in the flat ceramic membrane in the device, one end of the horizontal collecting pipe of the device is connected with a water outlet pipe, under the power provided by a filtering pump in the device, sewage in the membrane tank enters from the surfaces of the two sides of the membrane, and pollutants such as suspended substances and impurities in the sewage are intercepted by the flat ceramic membrane so as to achieve the effect of solid-liquid separation.
The flat ceramic membrane has good physicochemical properties, good hydrophilic performance, acid resistance, corrosion resistance, good heat resistance and high strength; the surface structure of the ceramic membrane can enable bubbles to more effectively clean the surface of the membrane, so that the membrane is easy to be washed by gas and water, the energy consumption is saved, and the transmembrane pressure difference is low; the diaphragm can be independently installed and replaced, the whole installation is flexible, the maintenance is easy, and the service life is long; compared with the traditional organic film, the organic film saves the occupied area. Therefore, the flat ceramic membrane is widely applied to sewage treatment projects with unique structure and high-quality performance.
The stacked screw type sludge dewatering machine is formed by mutually stacking a fixed ring and a movable ring, and a screw shaft penetrates through the fixed ring and the movable ring to form a filtering main body. Through gravity concentration and the internal pressure effect that mud received the back pressure board to form in the propulsion process and realize abundant dehydration, the filtrating is discharged from the filter joint that solid fixed ring and activity ring formed, and the excrement sediment is got rid of from the end of dehydration portion to mud that the sedimentation tank produced in subsequent waste water treatment system also can get into fold spiral shell formula sludge dewaterer and carry out dehydration after the concentrated processing of dull and stereotyped ceramic membrane earlier to improve dehydration efficiency.
The subsequent wastewater treatment system comprises an anaerobic tank, a two-stage AO pool (biochemical treatment), a dephosphorization coagulation flocculation sedimentation pool (physicochemical treatment) and the like, is a conventional treatment system in the field, and therefore, the subsequent wastewater treatment system is not described.
Utilize the utility model discloses the sewage treatment flow of system:
collecting the wastewater of the pig farm and converging the wastewater into a collecting pipe network, removing most solid particles and nearly all floating objects through a grating pool;
then, the effluent of the grid tank is filtered by a flat ceramic membrane in a membrane separation tank for solid-liquid separation, and the separated filtrate enters a subsequent wastewater treatment system for treatment, wherein most suspended matter impurities are removed from the filtrate;
and finally, feeding the concentrated solution after solid-liquid separation into a stacked spiral sludge dewatering machine, adding 30-40 mg/L flocculant polyacrylamide, and discharging the filtrate treated by the stacked spiral sludge dewatering machine to a subsequent wastewater treatment system. Discharging the manure residues dehydrated by the screw-stacked sludge dehydrator to a manure piling area.
Utilize the utility model discloses behind the pig farm waste water that system pretreatment water bubble excrement clear excrement mode produced, the suspended solid concentration range in the waste water can be low to 600 ~ 800mg/L, ensures the whole stability of operation of follow-up effluent disposal system, has avoided the too much biochemical system treatment effeciency decline scheduling problem that causes of floater and suspended solid.
The subsequent wastewater treatment system comprises an anaerobic tank, a two-stage AO pool (biochemical treatment), a dephosphorization coagulation flocculation sedimentation pool (physicochemical treatment) and the like, is a conventional treatment system in the field, and therefore, the subsequent wastewater treatment system is not described.
The pig farm wastewater pretreatment process generated by the blister manure cleaning method is exemplarily described above with reference to the accompanying drawings, and it is obvious that the specific implementation of the invention is not limited by the above-mentioned manner, and it falls within the protection scope of the invention as long as various improvements are made by the method concept and technical scheme of the invention, or the invention is directly applied to other occasions without the improvements.
Claims (3)
1. A piggery wastewater pretreatment system generated by water-soaked manure is characterized by comprising a grid pool, a membrane separation pool and a spiral-stacked sludge dewatering machine, wherein an outlet of the grid pool is connected to an inlet of the membrane separation pool, one outlet of the membrane separation pool is connected to an inlet of the spiral-stacked sludge dewatering machine, the other outlet of the membrane separation pool is connected to a subsequent wastewater treatment system, one outlet of the spiral-stacked sludge dewatering machine is connected to the subsequent wastewater treatment system, and the other outlet of the spiral-stacked sludge dewatering machine is connected to a manure stacking area; and a flat ceramic membrane filtering device is arranged in the membrane separation tank.
2. The system of claim 1, wherein the grid gap of the grid basin is 5 mm.
3. The system for pretreating pig farm wastewater generated by dunking manure according to claim 1, wherein a water pump is arranged between the outlet of the membrane separation tank and the inlet of the stacked-spiral sludge dewatering machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121199771.XU CN215288220U (en) | 2021-05-31 | 2021-05-31 | Pig farm wastewater pretreatment system that blister excrement produced |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121199771.XU CN215288220U (en) | 2021-05-31 | 2021-05-31 | Pig farm wastewater pretreatment system that blister excrement produced |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215288220U true CN215288220U (en) | 2021-12-24 |
Family
ID=79543209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121199771.XU Active CN215288220U (en) | 2021-05-31 | 2021-05-31 | Pig farm wastewater pretreatment system that blister excrement produced |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215288220U (en) |
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2021
- 2021-05-31 CN CN202121199771.XU patent/CN215288220U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A pre-treatment system for pig farm wastewater produced by blistered dung Effective date of registration: 20230113 Granted publication date: 20211224 Pledgee: Bank of China Limited by Share Ltd. Guangzhou Panyu branch Pledgor: GUANGDONG SHUIQING ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Registration number: Y2023980031171 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20211224 Pledgee: Bank of China Limited by Share Ltd. Guangzhou Panyu branch Pledgor: GUANGDONG SHUIQING ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Registration number: Y2023980031171 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A pre-treatment system for pig farm wastewater generated from blister manure Granted publication date: 20211224 Pledgee: Bank of China Limited by Share Ltd. Guangzhou Panyu branch Pledgor: GUANGDONG SHUIQING ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Registration number: Y2024980034575 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |