CN111704328B - Sewage treatment method based on sludge-recyclable desliming machine - Google Patents
Sewage treatment method based on sludge-recyclable desliming machine Download PDFInfo
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- CN111704328B CN111704328B CN202010742253.1A CN202010742253A CN111704328B CN 111704328 B CN111704328 B CN 111704328B CN 202010742253 A CN202010742253 A CN 202010742253A CN 111704328 B CN111704328 B CN 111704328B
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
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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
- 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
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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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
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
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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
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
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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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/06—Nutrients for stimulating the growth of microorganisms
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- 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)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a sewage treatment method based on a sludge reclaimable desliming machine, which comprises the following steps: s1, water inflow; s2, precipitating sludge; s4, regenerating microorganisms; s5, discharging water; the mud remover used in the sewage treatment process comprises a frame shell, wherein a rotary drum is installed in the frame shell, a plurality of mud outlets are formed in the inner bottom of the rotary drum, a water outlet is formed in the inner bottom of the rotary drum, a material conveying cylinder is installed in the rotary drum, a discharging mechanism is installed on the material conveying cylinder, a mechanism groove is formed in the side wall of the frame shell, and a driving part for controlling the material conveying cylinder and the rotary drum to rotate is installed in the mechanism groove. According to the invention, air is intermittently discharged into the first rubber tube and the second rubber tube, so that the first rubber tube and the second rubber tube are intermittently expanded, sludge discharged through the sludge outlet can be crushed and fluffy, the sludge has good air permeability, and the discharged sludge can be ensured to be capable of re-culturing microorganisms.
Description
Technical Field
The invention relates to the technical field related to sewage treatment, in particular to a sewage treatment method based on a sludge recovery type desliming machine.
Background
In modern sewage treatment processes, a microbial treatment tank is often used to treat sewage, and pollutants in the sewage are degraded by the decomposition activity of microbes.
Microorganisms in the microorganism treatment tank often adhere to activated sludge, and sewage treated by the microorganism treatment tank often carries a large amount of sludge, so that a desliming machine is required to desliming the sewage. When the existing centrifugal desliming machine desliming sewage, sludge is extruded by centrifugal force and a screw rod after being discharged and can be pressed into a sheet shape, the internal air permeability of the sludge is greatly reduced, so that air can not enter the sludge to be breathed by microorganisms, and therefore the sludge discharged after desliming is difficult to recycle and utilize to culture new microorganisms, and the sludge is often directly subjected to landfill treatment, so that great waste is caused. Accordingly, the present document proposes a sewage treatment method based on a sludge reclaimable desliming machine.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a sewage treatment method based on a sludge-recyclable desliming machine.
In order to achieve the purpose, the invention adopts the following technical scheme:
a sewage treatment method based on a sludge recovery type deslimer comprises the following steps:
s1, water is fed, and sewage after being filtered by the grating is led into a microbial adsorption tank to carry out microbial degradation on pollutants;
s2, sludge precipitation, namely introducing the sewage treated in the microbial adsorption tank into a precipitation tank for precipitation to remove larger sludge in the sewage;
s3, sewage desliming, namely pumping the sewage into a desliming machine for solid-liquid separation, and thoroughly removing sludge in the sewage;
s4, microorganism regeneration, namely feeding the sludge separated by the desliming machine into a regeneration tank, and adding corresponding nutrient substances to improve the activity of microorganisms and ensure that the sludge can be reused;
s5, discharging water, namely adding medicine into the sewage separated in the deslimer for coagulating sedimentation, and disinfecting the discharged water after filtering;
the mud remover used in the sewage treatment process comprises a frame shell, wherein a rotary drum is installed in the frame shell, a plurality of mud outlets are formed in the inner bottom of the rotary drum, a water outlet is formed in the inner bottom of the rotary drum, a material conveying cylinder is installed in the rotary drum, a discharging mechanism is installed on the material conveying cylinder, a mechanism groove is formed in the side wall of the frame shell, a driving part for controlling the material conveying cylinder and the rotary drum to rotate is installed in the mechanism groove, a first rubber pipe is embedded in the mud outlets, a second rubber pipe which is arranged in a staggered mode with the first rubber pipe and communicated with the first rubber pipe is further embedded in the mud outlets, a plurality of through holes are formed in the side walls of the first rubber pipe and the second rubber pipe, and a gas supply device for supplying gas into the first rubber pipe is installed in the mechanism groove.
Preferably, the air supply device comprises an exhaust fan which is coaxial with the rotary drum, an air duct which is communicated with the first rubber tube is embedded in the rotary drum, an air outlet hole is formed in the inner top of the mechanism groove, and an air inlet hole is formed in the inner wall of the mechanism groove.
Preferably, a hollow filter screen is embedded in the water outlet, an iron spring is embedded in the filter screen, and one fan blade of the exhaust fan is made of a magnetic material.
The invention has the following beneficial effects:
1. the suction fan is driven to operate by the operation of the driving part in the deslimer, and air is intermittently discharged into the first rubber pipe and the second rubber pipe along with the rotation of the rotary drum, so that the first rubber pipe and the second rubber pipe are intermittently expanded, sludge discharged from a sludge outlet can be crushed and fluffed, the sludge has good air permeability, and the discharged sludge can be used for culturing microorganisms again;
2. through the through holes formed in the first rubber tube and the second rubber tube, air in the tubes can be continuously discharged into the sludge through the through holes, so that on one hand, the fluffy effect of the sludge is improved; on the other hand, a proper amount of air can be injected into the sludge to improve the activity of residual microorganisms in the sludge, so that a good microorganism growth environment is formed, and convenience is provided for subsequent culture of new microorganisms;
3. by arranging the filter screen, the spring and other components in the water outlet, the filter screen can intercept a small amount of sludge remained in the water body, and simultaneously, the filter screen is continuously vibrated in the rotation process of the fan blades to bounce the sludge and convey the sludge away by the auger blades, so that on one hand, the desliming rate of the desliming machine is improved, and the discharged water body is cleaner; on the other hand, the recovery rate of sludge can be improved.
Drawings
FIG. 1 is a schematic structural view of a deslimer according to a first embodiment of the present invention;
FIG. 2 is an enlarged view of the structure at A in FIG. 1;
FIG. 3 is a schematic cross-sectional view taken along line B-B of FIG. 1;
FIG. 4 is a schematic structural view of a deslimer according to a first embodiment of the present invention;
fig. 5 is an enlarged view of the structure at C in fig. 4.
In the figure: 1 frame shell, 2 rotary drums, 21 water outlets, 3 material conveying cylinders, 31 auger blades, 4 material discharging disks, 41 material outlets, 5 mechanism grooves, 51 air inlet holes, 52 air outlet holes, 6 first rubber pipes, 61 through holes, 7 exhaust fans, 8 driving parts, 9 sludge outlets, 10 second rubber pipes, 11 filter screens, 12 springs and 13 air guide pipes.
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.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-3, a sewage treatment method based on a sludge-recycling deslimer comprises the following steps:
s1, water is fed, and sewage after being filtered by the grating is led into a microbial adsorption tank to carry out microbial degradation on pollutants;
s2, sludge precipitation, namely introducing the sewage treated in the microbial adsorption tank into a precipitation tank for precipitation to remove larger sludge in the sewage;
s3, sewage desliming, namely pumping the sewage into a desliming machine for solid-liquid separation, and thoroughly removing sludge in the sewage;
s4, microorganism regeneration, namely feeding the sludge separated by the desliming machine into a regeneration tank, and adding corresponding nutrient substances to improve the activity of microorganisms and ensure that the sludge can be reused;
s5, discharging water, namely adding medicine into the sewage separated in the deslimer for coagulating sedimentation, and disinfecting the discharged water after filtering;
the mud removing machine used in the sewage treatment process comprises a frame shell 1, a rotary drum 2 is installed in the frame shell 1, a plurality of mud outlets 9 are formed in the inner bottom of the rotary drum 2, a water outlet 21 is formed in the inner bottom of the rotary drum 2, a material conveying barrel 3 is installed in the rotary drum 2, a discharging mechanism is installed on the material conveying barrel 3, a mechanism groove 5 is formed in the side wall of the frame shell 1, and a driving part 8 for controlling the material conveying barrel 3 and the rotary drum 2 to rotate is installed in the mechanism groove 5.
It should be noted that the discharging mechanism includes a discharging tray 4 installed at the discharging end of the material conveying cylinder 3, a discharging port 41 is provided on the side wall of the discharging tray 4, and an auger blade 31 is installed on the side wall of the material conveying cylinder 3. The driving part 8 comprises an internal motor, and the internal motor is in transmission connection with the rotary drum 2 and the material conveying cylinder 3 through a differential mechanism. In the scheme, the installation modes of the rotary drum 2, the material conveying cylinder 3, the auger blade 31, the material discharging disc 4, the driving part 8 and other parts and the connection modes of all the parts are the same as those of the existing centrifugal mud remover, so the details are not explained.
Go out the embedded first rubber tube 6 that is equipped with of mud mouth 9, still inlay in the mud mouth 9 and be equipped with the second rubber tube 10 that sets up and communicate mutually with first rubber tube 6 is crisscross, and a plurality of through-holes 61 have all been seted up to the lateral wall of first rubber tube 6 and second rubber tube 10, and the air feeder of air feed in to first rubber tube 6 is installed to mechanism's inslot 5.
The aperture of the through hole 61 is small, so that on one hand, sludge can be prevented from entering the through hole 61 to cause blockage; on the other hand, the air discharged from the air supply device is not easily discharged through the narrow through hole 61 at a time, and the first rubber tube 6 and the second rubber tube 10 are expanded to crush the passing sludge.
The air supply device comprises an exhaust fan 7 which is coaxial with the rotary drum 2, an air duct 13 which is communicated with the first rubber tube 6 is embedded in the rotary drum 2, an air outlet 52 is formed in the inner top of the mechanism groove 5, and an air inlet 51 is formed in the inner wall of the mechanism groove 5.
The exhaust fan 7 is disposed coaxially with the rotary drum 2, so that the exhaust fan 7 and the rotary drum 2 can rotate synchronously, and the installation manner between the two is a conventional mature technology, and therefore, detailed description is omitted. In addition, the side wall of the rotary drum 2 is tightly attached to the inner wall of the housing shell 1 to ensure that when the air duct 13 is opposite to the air outlet 52, air can be completely discharged into the air duct 13, and further the first rubber tube 6 and the second rubber tube 10 are caused to expand.
As with the common centrifugal desliming machine, sewage containing sludge enters the desliming machine along the material conveying cylinder 3, the rotary drum 2 and the material conveying cylinder 3 rotate in a differential mode under the action of the differential mechanism of the driving part 8, the sewage and the sludge are separated and discharged from the discharge hole 41 on the discharge disc 4 due to the specific gravity difference of the sewage and the sludge, the sewage and the sludge are close to the inner wall of the rotary drum 2 when being thrown out in a large specific gravity mode and can be conveyed away by the auger blades 31 and discharged from the sludge outlet 9, and the sewage is discharged from the water outlet 21.
In the process of discharging the sludge, the rotary drum 2 synchronously drives the suction fan 7 to rotate when rotating, so that air outside the equipment can be continuously sucked into the mechanism groove 5 and then discharged from the air outlet 52. Because the rotary drum 2 is also continuously rotated, the air inlet end of the air guide pipe 13 can be intermittently opposite to the air outlet end of the air outlet hole 52, so that air can be intermittently discharged into the air guide pipe 13.
When air is exhausted into the air duct 13, the air in the air duct 13 can be instantly squeezed into the first rubber tube 6 and the second rubber tube 10, at the moment, the air in the first rubber tube 6 and the second rubber tube 10 cannot be exhausted from the fine through hole 61 at any time, the first rubber tube 6 and the second rubber tube 10 have good elasticity, so that the first rubber tube 6 and the second rubber tube 10 can be expanded, and after the air flow is stable, the first rubber tube 6 and the second rubber tube 10 recover. Therefore, the exhaust process of the exhaust fan 7 is good, the first rubber pipe 6 and the second rubber pipe 10 are continuously expanded, and the sludge passing through the sludge outlet 9 can be crushed, so that the sludge pressed into a sheet shape becomes fluffy and breathable, and can be recycled to culture new microorganisms.
In addition, when the air is discharged from the through hole 61, the air enters the crushed sludge, and due to the fact that the discharged air flow rate is high, the impact can be caused on the sludge, the crushed sludge is fluffier, meanwhile, the oxygen content in the sludge is increased, the activity of residual microorganisms in the sludge can be improved, the growth of the residual microorganisms is promoted, a good growth environment of the microorganisms is formed, and convenience conditions are provided for subsequent microorganism regeneration culture.
Example two:
referring to fig. 4-5, different from the first embodiment, a hollow filter screen 11 is embedded in the water outlet, a spring 12 made of iron is embedded in the filter screen 11, and one of the blades of the exhaust fan 7 is made of a magnetic material. Besides the spring 12 and the magnetic fan blade, other components are made of non-magnetic conductive materials.
In this embodiment, thereby sewage will be filtered by filter screen 11 when delivery port 21 is discharged, can filter a small amount of remaining mud in the sewage on filter screen 11 to can guarantee that the sewage of discharging is cleaner.
Furthermore, it is more prominent that the magnetic blades of the suction fan 7 will be continuously close to and away from the iron spring 12 during the rotation of the suction fan 7. When the magnetic blade is close to the spring 12, the spring 12 is contracted along the direction of the magnetic blade under the action of the magnetic force, and when the magnetic blade is far from the spring 12, the spring 12 is extended and recovered under the action of the self-elasticity. Therefore, in the high-speed rotation process of the suction fan 7, the spring 12 stretches at high frequency, so that the high-frequency shaking of the filter screen 11 is caused, the sludge intercepted on the filter screen 11 cannot be bounced, and the sludge cannot be conveyed to the sludge outlet 9 along with the auger blade 31. Therefore, the mud content of the discharged sewage is greatly reduced, and the recovery amount of the mud is greatly increased.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (1)
1. A sewage treatment method based on a sludge recovery type desliming machine is characterized by comprising the following steps:
s1, water is fed, and sewage after being filtered by the grating is led into a microbial adsorption tank to carry out microbial degradation on pollutants;
s2, sludge precipitation, namely introducing the sewage treated in the microbial adsorption tank into a precipitation tank for precipitation to remove larger sludge in the sewage;
s3, sewage desliming, namely pumping the sewage into a desliming machine for solid-liquid separation, and thoroughly removing sludge in the sewage;
s4, microorganism regeneration, namely feeding the sludge separated by the desliming machine into a regeneration tank, and adding corresponding nutrient substances to improve the activity of microorganisms and ensure that the sludge can be reused;
s5, discharging water, namely adding medicine into the sewage separated in the deslimer for coagulating sedimentation, and disinfecting the discharged water after filtering;
the mud remover used in the sewage treatment process comprises a rack shell (1), wherein a rotary drum (2) is installed in the rack shell (1), a plurality of mud outlets (9) are formed in the inner bottom of the rotary drum (2), a water outlet (21) is formed in the inner bottom of the rotary drum (2), a material conveying cylinder (3) is installed in the rotary drum (2), a discharging mechanism is installed on the material conveying cylinder (3), a mechanism groove (5) is formed in the side wall of the rack shell (1), and a driving part (8) for controlling the material conveying cylinder (3) and the rotary drum (2) to rotate is installed in the mechanism groove (5);
a first rubber pipe (6) is embedded in the sludge outlet (9), second rubber pipes (10) which are staggered with the first rubber pipes (6) and are mutually communicated are also embedded in the sludge outlet (9), a plurality of through holes (61) are formed in the side walls of the first rubber pipes (6) and the second rubber pipes (10), and an air supply device for supplying air into the first rubber pipes (6) is installed in the mechanism groove (5);
the air supply device comprises an exhaust fan (7) which is coaxial with the rotary drum (2), an air duct (13) which is communicated with the first rubber pipe (6) is embedded in the rotary drum (2), an air outlet hole (52) is formed in the inner top of the mechanism groove (5), and an air inlet hole (51) is formed in the inner wall of the mechanism groove (5);
a hollow filter screen (11) is embedded in the water outlet (21), an iron spring (12) is embedded in the filter screen (11), and one fan blade of the exhaust fan (7) is made of a magnetic material;
in the sludge discharging process, when the rotary drum (2) rotates, the suction fan (7) is synchronously driven to rotate, air outside the equipment is continuously sucked into the mechanism groove (5) and then discharged from the air outlet (52); because the rotary drum (2) also continuously rotates, the air inlet end of the air guide pipe (13) is intermittently opposite to the air outlet end of the air outlet hole (52), so that air is intermittently discharged into the air guide pipe (13);
when air is exhausted into the air guide pipe (13), the air in the air guide pipe (13) is instantly extruded into the first rubber pipe (6) and the second rubber pipe (10), at the moment, the air in the first rubber pipe (6) and the second rubber pipe (10) cannot be exhausted from the fine through hole (61) at any time, the first rubber pipe (6) and the second rubber pipe (10) have good elasticity, so that the first rubber pipe (6) and the second rubber pipe (10) are expanded, and after the air flow is stable, the first rubber pipe (6) and the second rubber pipe (10) are recovered; in the exhaust process of the exhaust fan (7), the first rubber pipe (6) and the second rubber pipe (10) are continuously expanded to clamp the sludge passing through the sludge outlet (9), so that the sludge pressed into a sheet shape becomes fluffy and breathable, and new microorganisms are cultured by recovery;
in the rotation process of the exhaust fan (7), the magnetic fan blades of the exhaust fan (7) are continuously close to and far away from the iron spring (12); when the magnetic fan blade is close to the spring (12), the spring (12) is contracted along the direction of the magnetic fan blade under the action of magnetic force, and when the magnetic fan blade is far away from the spring (12), the spring (12) is extended and recovered under the action of self elasticity; in the high-speed rotation process of the suction fan (7), the spring (12) expands and contracts at high frequency, so that the high-frequency shaking of the filter screen (11) is caused, the sludge intercepted on the filter screen (11) is continuously bounced, and the sludge is conveyed to the sludge outlet (9) along with the auger blade (31); therefore, the mud content of the discharged sewage is greatly reduced, and the recovery amount of the mud is greatly increased.
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| CN202010742253.1A CN111704328B (en) | 2020-07-29 | 2020-07-29 | Sewage treatment method based on sludge-recyclable desliming machine |
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| CN1454852A (en) * | 2002-10-15 | 2003-11-12 | 上海子征环境技术咨询有限公司 | Zeolite-bio combined adsorption regenerative sewage treating process |
| CN101704619A (en) * | 2009-11-30 | 2010-05-12 | 辽宁石油化工大学 | Process for treating and recycling city sewage water |
| CN109704472A (en) * | 2017-10-25 | 2019-05-03 | 梁克俭 | Centrifugation deslimer for the purification of iron ore sludge |
| CN208829526U (en) * | 2018-06-20 | 2019-05-07 | 济宁市鲁泉水处理有限公司 | Sewage treatment deslimer |
| CN111453966A (en) * | 2020-06-03 | 2020-07-28 | 魏聪 | High-efficient type desliming machine for sewage treatment |
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2020
- 2020-07-29 CN CN202010742253.1A patent/CN111704328B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1454852A (en) * | 2002-10-15 | 2003-11-12 | 上海子征环境技术咨询有限公司 | Zeolite-bio combined adsorption regenerative sewage treating process |
| CN101704619A (en) * | 2009-11-30 | 2010-05-12 | 辽宁石油化工大学 | Process for treating and recycling city sewage water |
| CN109704472A (en) * | 2017-10-25 | 2019-05-03 | 梁克俭 | Centrifugation deslimer for the purification of iron ore sludge |
| CN208829526U (en) * | 2018-06-20 | 2019-05-07 | 济宁市鲁泉水处理有限公司 | Sewage treatment deslimer |
| CN111453966A (en) * | 2020-06-03 | 2020-07-28 | 魏聪 | High-efficient type desliming machine for sewage treatment |
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