CN113440897A - Sedimentation tank sludge discharge system and method - Google Patents
Sedimentation tank sludge discharge system and method Download PDFInfo
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- CN113440897A CN113440897A CN202110910079.1A CN202110910079A CN113440897A CN 113440897 A CN113440897 A CN 113440897A CN 202110910079 A CN202110910079 A CN 202110910079A CN 113440897 A CN113440897 A CN 113440897A
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- 239000010802 sludge Substances 0.000 title claims abstract description 153
- 238000004062 sedimentation Methods 0.000 title claims abstract description 124
- 238000000034 method Methods 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 103
- 238000011010 flushing procedure Methods 0.000 claims abstract description 34
- 238000010992 reflux Methods 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 18
- 239000002245 particle Substances 0.000 claims description 9
- 239000010865 sewage Substances 0.000 claims description 9
- 230000009471 action Effects 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 7
- 238000005406 washing Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 3
- 239000011148 porous material Substances 0.000 description 8
- 230000008569 process Effects 0.000 description 6
- 230000005484 gravity Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/02—Settling tanks with single outlets for the separated liquid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/0006—Settling tanks provided with means for cleaning and maintenance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/24—Feed or discharge mechanisms for settling tanks
- B01D21/245—Discharge mechanisms for the sediments
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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
-
- 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
- C02F2001/007—Processes including a sedimentation step
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
本发明提供了一种沉淀池排泥系统及方法，包括进水管、进水区、污泥区、排泥管、外回流泵、冲洗管、冲洗连接管、潜水泵以及数显时间继电器；进水管与沉淀池通过法兰连接，进水管与进水区连通设置，污泥区设置在沉淀池的下部，排泥管设置在污泥区的下方，排泥管与外回流泵通过法兰连接，潜水泵位于沉淀池的清水区，且潜水泵通过冲洗连接管和冲洗管连接起来，数显时间继电器与潜水泵连接，且数显时间继电器控制潜水泵的启停。本发明的一种沉淀池排泥系统，利用水流扰动污泥斗侧壁上堆积的污泥及排泥管上方区域的污泥，防止污泥架桥悬空以及沉淀池内存在污泥死区；解决沉淀池排泥系统不稳定所导致的外回流污泥浓度偏低和沉淀池跑泥现象严重的问题。
The invention provides a sedimentation tank sludge discharge system and method, comprising a water inlet pipe, a water inlet area, a sludge area, a sludge discharge pipe, an external return pump, a flushing pipe, a flushing connecting pipe, a submersible pump and a digital display time relay; The water pipe and the sedimentation tank are connected by flanges, the water inlet pipe is connected with the water inlet area, the sludge area is arranged in the lower part of the sedimentation tank, the sludge discharge pipe is arranged below the sludge area, and the sludge discharge pipe and the external return pump are connected by flanges , the submersible pump is located in the clean water area of the sedimentation tank, and the submersible pump is connected by the flushing connection pipe and the flushing pipe, the digital display time relay is connected with the submersible pump, and the digital display time relay controls the start and stop of the submersible pump. The sludge discharge system of the sedimentation tank of the present invention utilizes water flow to disturb the sludge accumulated on the side wall of the sludge bucket and the sludge in the area above the sludge discharge pipe, so as to prevent the sludge bridge from being suspended and the sludge dead zone in the sedimentation tank; The instability of the sludge discharge system in the sedimentation tank leads to the low concentration of the external return sludge and the serious phenomenon of sludge running in the sedimentation tank.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a sedimentation tank sludge discharge system and a sedimentation tank sludge discharge method, and particularly relates to an improvement mode of a sedimentation tank sludge discharge system.
Background
The sedimentation tank is commonly used at the tail end of the biochemical treatment tank, the mud-water separation of mud-water mixtures of the biochemical treatment unit is mainly realized through the gravity natural sedimentation effect, supernatant after sedimentation can directly enter inferior treatment or directly be disinfected and discharged, and sludge flows back to the previous biochemical treatment tank through a sludge discharge pipe and an external reflux pump arranged in a sludge hopper area. The stability of the sludge discharge system of the sedimentation tank plays a crucial role in the whole sewage treatment process, and not only can the sludge age be influenced, but also the stability of the sludge concentration of the biochemical tank can be influenced. To evaluate the feasibility of a sewage treatment process, a pilot test study is generally carried out, and the daily treatment capacity of the pilot test study is small (generally less than 100 m)3And d), therefore, a vertical flow sedimentation tank with smaller floor space is often used.
The sedimentation tank in the pilot test is difficult to set up the mud scraper because of the scale is less, and the mud phenomenon of running of sedimentation tank that the mud pipe vacuums to lead to often appears serious and outer backward flow concentration is not enough to maintain biochemical section mud concentration's phenomenon. In the test operation process, operation and maintenance personnel are required to frequently observe the mud level, the concentration of externally returned mud, mud leakage and the like of the sedimentation tank, and the bottom of the sedimentation tank is artificially stirred to relieve the phenomenon that a mud pipe is emptied; the labor intensity of operation and maintenance personnel is increased, and randomness and uncertainty factors are more, so that the operation is not favorable for the stable operation of the sedimentation tank and the whole sewage treatment process.
Disclosed in the patent document with publication number CN210751418U a arrange mud system for small-size sedimentation tank, arrange the mud device including sedimentation tank, mud pipe and drive, the sedimentation tank bottom is the slope form, the mud device is arranged in the drive and is connected with the mud pipe, the mud pipe is responsible for, bottom mud pipe and superficial mud pipe including arranging the mud, arrange the mud and be responsible for the setting in the top of sedimentation tank, the one end of bottom mud pipe and the end connection who arranges the mud and be responsible for, the other end sets up in the deepest department of slope form sedimentation tank bottom, the one end and the row mud of superficial mud pipe are responsible for and are connected, and the other end is provided with the superficial mud and collects the funnel.
In view of the above-mentioned related technologies, the inventor believes that there are problems that the sludge discharge system of the sedimentation tank is unstable, which results in a lower concentration of the sludge flowing back from the sedimentation tank and a serious sludge leakage phenomenon from the sedimentation tank, and therefore, there is a need to provide a technical method for improving the above technical problems.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a sedimentation tank sludge discharge system and a sedimentation tank sludge discharge method.
The sludge discharge system of the sedimentation tank comprises a water inlet pipe, a water inlet area, a sludge discharge pipe, an external reflux pump, a flushing pipe, a flushing connecting pipe, a submersible pump and a digital display time relay, wherein the water inlet area is arranged on the bottom of the sedimentation tank;
the inlet tube passes through flange joint with the sedimentation tank, and the inlet tube sets up with intake zone intercommunication, the mud district sets up the below at the sedimentation tank, the sludge discharge pipe sets up in the below in mud district, and the sludge discharge pipe passes through flange joint with outer backwash pump, the immersible pump is located the clear water district of sedimentation tank, and the immersible pump couples together through washing connecting pipe and flushing pipe, digital display time relay is connected with the immersible pump, and opening of digital display time relay control immersible pump stops.
Preferably, the water baffle changes the flowing direction of the mud-water mixture, so that mud-water separation is performed on sludge particles and clean water in the sedimentation tank, the sludge particles enter a sludge area, and the clean water moves upwards to form a clean water area; a water outlet groove is arranged in the clear water area;
the upper part of the sedimentation tank is provided with an ultrahigh part.
Preferably, a mud valve is arranged at the bottom of the sedimentation tank, and an emptying valve is arranged below the mud valve;
the external reflux pump is a screw pump.
Preferably, the upper part of the sludge discharge pipe is provided with a first opening and a first plug, and the distance between the first openings close to one side of the first plug is larger than that between the first openings far away from one side of the first plug;
the first holes are two rows, and the direction of the first holes inclines downwards 45 degrees.
Preferably, the flushing pipe is fixed on the side wall of the sludge bucket through a U-shaped pipe clamp.
Preferably, the upper part of the flushing pipe is provided with a second opening and a second plug, and the distance between the second opening close to one side of the second plug is larger than that between the second opening far away from one side of the second plug;
the second openings are three rows oriented at 0 °, 90 ° and 270 °.
The invention also provides a sedimentation tank sludge discharge method, which applies the sedimentation tank sludge discharge system and comprises the following steps:
step S1: the mud-water mixture in the biochemical tank enters a water inlet area of the sedimentation tank through a water inlet pipe;
step S2: the mud-water mixture flows upwards, the mud-water mixture is subjected to mud-water separation, sludge particles move downwards and enter a sludge hopper, clear water moves upwards, and a clear water area appears at the upper part of the sedimentation tank;
step S3: clear water enters the water outlet groove through the triangular weir and is directly discharged through the water outlet of the sedimentation tank or enters a subsequent unit for treatment;
step S4: under the action of an external reflux pump, sludge with a certain flow enters a sludge discharge pipe and then flows back to the biochemical unit pool;
step S5: the sludge age of the whole sewage treatment system is controlled by the sludge discharge valve, and when the sedimentation tank is overhauled or is stopped, the sludge-water mixture in the sedimentation tank is completely discharged by the emptying valve.
Preferably, the water inlet pipe and the sedimentation tank in the step S1 are connected by a flange.
Preferably, the upper part of the sedimentation tank in the step S2 is set to be super-high.
Preferably, the clear water zone of the sedimentation tank in the step S2 is provided with a submersible pump, the submersible pump is connected with the flushing pipe through a flushing connecting pipe, and the start and stop of the submersible pump are controlled by a digital display time relay.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention constructs an improved mode of a sludge discharge system of a sedimentation tank, and disturbs sludge accumulated on the side wall of a sludge hopper and sludge in an area above a sludge discharge pipe by using water flow, so as to prevent a sludge bridge from suspending and prevent a sludge dead zone in the sedimentation tank;
2. the invention can solve the problems of low concentration of external reflux sludge and serious sludge leakage phenomenon of the sedimentation tank caused by the instability of a sludge discharge system of the sedimentation tank, and improve the stable operation of the system;
3. the invention has the advantages of easy realization, low cost, automatic operation, great improvement of the operation stability of the sedimentation tank sludge discharge system and the like;
4. the invention is suitable for the reconstruction of newly processed sedimentation tanks and sedimentation tank devices.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is an overall schematic view of the present invention;
FIG. 2 is a schematic view of the flush tube of the present invention;
FIG. 3 is a schematic view of the mud pipe of the present invention.
Wherein:
Second opening 81 of flange 2
Flushing connecting pipe 9 for side wall 4 of sludge bucket
Sludge zone 5 submersible pump 10
First opening 61 water guard plate 12
The first plug 62 is ultrahigh 13
U-shaped pipe clamp 15
Blow-off valve 16
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
The invention constructs an improved mode of a sludge discharge system of a sedimentation tank, and disturbs sludge accumulated on the side wall of a sludge hopper and sludge in an area above a sludge discharge pipe by using water flow, so as to prevent a sludge bridge from suspending and prevent a sludge dead zone in the sedimentation tank; the improved mode can solve the problems of low concentration of external backflow sludge and serious sludge leakage phenomenon of the sedimentation tank caused by instability of a sludge discharge system of the sedimentation tank, and provides stable operation performance of the system.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the invention provides an optimization mode of a sedimentation tank sludge discharge system, which mainly comprises a water inlet pipe 1, a water inlet area 3, a sludge area 5, a sludge discharge pipe 6, an external reflux pump 7, a flushing pipe 8, a flushing connecting pipe 9, a submersible pump 10 and a digital display time relay 11.
The key points of the structure are as follows: the mud-water mixture in the biochemical tank enters a water inlet area 3 of the sedimentation tank through a water inlet pipe 1, and the water inlet pipe and the sedimentation tank are generally connected through a flange 2; under the action of the water baffle 12, the flow mode of the mud-water mixture is changed into upward flow, mud-water separation occurs under the action of gravity in the water flow movement process, sludge particles move downwards to enter the sludge area 5, and clear water moves upwards, so that a clear water area appears at the upper part of the sedimentation tank, clear water passes over a triangular weir to enter a water outlet groove 14 and is directly discharged or enters a subsequent treatment unit through a water outlet of the sedimentation tank; in order to prevent the overflow of the sedimentation tank, a part of superelevation 13 is arranged at the upper part of the sedimentation tank; under the action of the external reflux pump 7, sludge with a certain flow enters the sludge discharge pipe 6 and then flows back to the biochemical unit pool in front. The submersible pump 10 is positioned in a clear water area of the sedimentation tank, is connected with the flushing pipe 8 through the flushing connecting pipe 9, and controls the start and stop of the submersible pump by using the digital display time relay 11. The sludge age of the whole sewage treatment system can be controlled by the sludge discharge valve 15, and when the sedimentation tank is overhauled or the sedimentation tank is stopped, the sludge-water mixture in the sedimentation tank can be completely discharged by the emptying valve 16.
The sludge discharge pipe 6 and the external reflux pump 7 are generally connected through flanges; because the sludge concentration in the sludge hopper is higher and the medium viscosity is large, the external reflux pump 7 generally adopts a screw pump; the upper part of the sludge discharge pipe 6 is provided with a first opening 61 and a first plug 62, and the distance between the first openings 61 close to one side of the first plug 62 is larger than that between the first openings 61 far away from one side of the first plug 62; the type of the external reflux pump 7 and the diameter of the first opening 61 are selected to meet the requirement of the external reflux flow of the sludge; the first openings 61 are 2 rows, and the direction of the first openings 61 is 45 ° downward.
The flushing pipe 8 is fixed on the side wall 4 of the sludge hopper through a U-shaped pipe clamp 15; the upper part of the flushing pipe 8 is provided with a second opening 81 and a second plug 82, and the distance between the second openings 82 close to one side of the second plug 82 is larger than the distance between the second openings 81 far away from one side of the second plug 82. The submersible pump 10 is flow-patterned and the diameter of the second opening 81 is selected to ensure a sufficiently large flow rate of the outlet water, the second opening 81 having 3 rows, i.e. 0 °, 90 ° and 270 ° directions. When the submersible pump operates, the water flow ejected by the second opening 81 disturbs the sludge accumulated on the side wall 4 of the sludge hopper and the sludge in the area above the sludge discharge pipe, so that the sludge bridging is prevented from being suspended and a sludge dead zone is prevented from existing in the sedimentation tank. When the submersible pump stops running, sludge particles enter the sludge hopper under the action of gravity, and then are pumped out of the sedimentation tank by the sludge discharge pipe 6 and flow back to the biochemical tank at the front section.
The invention provides an improved mode of a sludge discharge system of a sedimentation tank, which disturbs sludge accumulated on the side wall of a sludge hopper and sludge in an area above a sludge discharge pipe by using water flow, and prevents sludge bridging from suspending and sludge dead zones in the sedimentation tank; the improved mode can solve the problems of low concentration of the external reflux sludge and serious sludge leakage phenomenon of the sedimentation tank caused by the instability of the sludge discharge system of the sedimentation tank. The system can be used for newly-processed sedimentation tanks and can also be used for transforming the existing sedimentation tanks, is easy to realize, has low cost and automatic operation, and greatly improves the operation stability of the sludge discharge system of the sedimentation tanks.
The invention is easy to realize, and has low cost: the structure of the sedimentation tank is not damaged, and only 2 flushing pipes, 2 flushing connecting pipes, 1 submersible pump and 1 time relay are needed to be added; automatic operation: the digital display time relay is used for automatically controlling the starting and stopping of the submersible pump, so that the labor intensity of operation and maintenance personnel is greatly reduced; improve sedimentation tank row mud system operating stability: the water flow jetted by the opening of the flushing pipe disturbs the sludge at variable time, so that a sludge dead zone in the sedimentation tank and sludge floating caused by nitrogen generated by denitrification in an anoxic environment can be avoided; meanwhile, the sludge in the sludge discharge pipe area can be prevented from being pumped out, the sufficiently high concentration of the external reflux sludge is ensured, and the stable operation of the sedimentation tank and the whole sewage treatment process is maintained.
In a specific embodiment of the invention, the inner diameter of the sludge discharge pipe is 45mm, the effective open pore length is 1000mm, the open pore diameter is 10mm, the open pore distance of 0.5m close to the plug is 20mm, and the open pore distance of 0.5m far away from the plug is 10 mm; rated flow 2m of external reflux pump3/h。
In a specific embodiment of the invention, the included angle between the side wall of the sludge hopper and the bottom of the sedimentation tank is 60 degrees, the inner diameter of the flushing pipe is 25mm, the effective open pore length is 1000m, the open pore diameter is 5mm, the open pore distance of 0.5m close to the plug is 20mm, and the open pore distance of 0.5 away from the plug is 10 mm; rated flow of the submersible pump is 8m3H is used as the reference value. The flushing connecting pipe is a hose and is connected with the outlet of the submersible pump and the water inlet of the flushing pipe through a metal hoop.
In one embodiment of the invention, the distance between the water outlet groove of the sedimentation tank and the bottom of the sedimentation tank is 2.1m, the submersible pump is arranged at a position 0.3m below the water outlet groove, the digital display time relay is set to start the submersible pump for 1 minute every 29 minutes, the concentration of the external reflux sludge is basically stable, and the evacuation phenomenon hardly exists.
The invention also provides a sedimentation tank sludge discharge method, which applies the sedimentation tank sludge discharge system and comprises the following steps: step S1: the mud-water mixture in the biochemical tank enters a water inlet area of the sedimentation tank through a water inlet pipe; the water inlet pipe is connected with the sedimentation tank through a flange.
Step S2: the mud-water mixture flows upwards, the mud-water mixture is subjected to mud-water separation, sludge particles move downwards and enter a sludge hopper, clear water moves upwards, and a clear water area appears at the upper part of the sedimentation tank; the upper part of the sedimentation tank is provided with an ultrahigh part; the clear water area of the sedimentation tank is provided with a submersible pump which is connected with a flushing pipe through a flushing connecting pipe, and the start and stop of the submersible pump are controlled by a digital display time relay.
Step S3: clear water enters the water outlet groove through the triangular weir and is directly discharged through the water outlet of the sedimentation tank or enters a subsequent unit for treatment; step S4: under the action of an external reflux pump, sludge with a certain flow enters a sludge discharge pipe and then flows back to the biochemical unit pool; step S5: the sludge age of the whole sewage treatment system is controlled by the sludge discharge valve, and when the sedimentation tank is overhauled or is stopped, the sludge-water mixture in the sedimentation tank is completely discharged by the emptying valve.
Those skilled in the art will appreciate that, in addition to implementing the system and its various devices, modules, units provided by the present invention as pure computer readable program code, the system and its various devices, modules, units provided by the present invention can be fully implemented by logically programming method steps in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Therefore, the system and various devices, modules and units thereof provided by the invention can be regarded as a hardware component, and the devices, modules and units included in the system for realizing various functions can also be regarded as structures in the hardware component; means, modules, units for performing the various functions may also be regarded as structures within both software modules and hardware components for performing the method.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. A sedimentation tank sludge discharge system is characterized by comprising a water inlet pipe (1), a water inlet area (3), a sludge area (5), a sludge discharge pipe (6), an external reflux pump (7), a flushing pipe (8), a flushing connecting pipe (9), a submersible pump (10) and a digital display time relay (11);
inlet tube (1) is connected through flange (2) with the sedimentation tank, and inlet tube (1) and intake zone (3) intercommunication set up, mud district (5) set up the below at the sedimentation tank, sludge discharge pipe (6) set up the below in mud district (5), and sludge discharge pipe (6) and outer backwash pump (7) are connected through flange (2), immersible pump (10) are located the clear water district of sedimentation tank, and immersible pump (10) are connected through washing connecting pipe (9) and flushing pipe (8), digital display time relay (11) are connected with immersible pump (10), and digital display time relay (11) control immersible pump (10) open and stop.
2. The sedimentation tank sludge discharge system of claim 1 wherein the water deflector (12) changes the flow direction of the sludge-water mixture to cause sludge-water separation of sludge particles and clear water inside the sedimentation tank, the sludge particles enter the sludge zone, and the clear water moves upward to form the clear water zone; a water outlet groove (14) is arranged in the clear water area;
the upper part of the sedimentation tank is provided with an overhigh tank (13).
3. The sedimentation tank sludge discharge system according to claim 1, wherein a sludge discharge valve (15) is arranged at the bottom of the sedimentation tank, and an emptying valve (16) is arranged below the sludge discharge valve (15);
the external reflux pump (7) is a screw pump.
4. The sedimentation tank sludge discharge system according to claim 1, wherein the sludge discharge pipe (6) is provided with a first opening (61) and a first plug (62) at the upper part, and the distance between the first openings (61) at the side close to the first plug (62) is larger than that between the first openings (61) at the side far away from the first plug (62);
the first holes (61) are two rows, and the direction of the first holes (61) inclines downwards by 45 degrees.
5. A sedimentation tank sludge discharge system according to claim 1, wherein the flushing pipe (8) is fixed to the sludge hopper side wall (4) by a U-shaped pipe clamp.
6. The sedimentation tank sludge discharge system according to claim 1, wherein the upper part of the flushing pipe (8) is provided with a second opening (81) and a second plug (82), and the distance between the second openings (81) on the side close to the second plug (82) is larger than the distance between the second openings (81) on the side far away from the second plug (82);
the second apertures (81) are three rows oriented at 0 °, 90 ° and 270 °.
7. A sedimentation tank sludge discharge method using the sedimentation tank sludge discharge system according to any one of claims 1 to 6, the method comprising the steps of:
step S1: the mud-water mixture in the biochemical tank enters a water inlet area of the sedimentation tank through a water inlet pipe;
step S2: the mud-water mixture flows upwards, the mud-water mixture is subjected to mud-water separation, sludge particles move downwards and enter a sludge hopper, clear water moves upwards, and a clear water area appears at the upper part of the sedimentation tank;
step S3: clear water enters the water outlet groove through the triangular weir and is directly discharged through the water outlet of the sedimentation tank or enters a subsequent unit for treatment;
step S4: under the action of an external reflux pump, sludge with a certain flow enters a sludge discharge pipe and then flows back to the biochemical unit pool;
step S5: the sludge age of the whole sewage treatment system is controlled by the sludge discharge valve, and when the sedimentation tank is overhauled or is stopped, the sludge-water mixture in the sedimentation tank is completely discharged by the emptying valve.
8. The sludge discharging method for the sedimentation tank as claimed in claim 7, wherein the water inlet pipe and the sedimentation tank in the step S1 are connected by a flange.
9. The sludge discharging method for a sedimentation tank as claimed in claim 7, wherein the upper part of the sedimentation tank in the step S2 is set to be ultra-high.
10. The sludge discharging method for the sedimentation tank of claim 7, wherein the clear water zone of the sedimentation tank in the step S2 is provided with a submersible pump, the submersible pump is connected with the flushing pipe through a flushing connecting pipe, and the start and stop of the submersible pump are controlled by a digital display time relay.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117049693A (en) * | 2023-08-02 | 2023-11-14 | 中铁上海工程局集团市政环保工程有限公司 | Integrated sewage treatment equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203428972U (en) * | 2013-09-02 | 2014-02-12 | 清勤水处理科技（上海）有限公司 | Separator and reactor containing same |
| CN204981355U (en) * | 2015-06-05 | 2016-01-20 | 重庆泰克环保科技股份有限公司 | Mechanical stirring clarification tank |
| CN205269143U (en) * | 2015-12-31 | 2016-06-01 | 重庆逸境环保工程有限公司 | Sewage treatment precipitation separation pond |
| CN111137962A (en) * | 2020-01-22 | 2020-05-12 | 四川省科学城天人环保有限公司 | Integrated efficient sedimentation tank sewage treatment device |
| CN215781717U (en) * | 2021-08-09 | 2022-02-11 | 国投信开水环境投资有限公司 | Sludge discharge system of sedimentation tank |
-
2021
- 2021-08-09 CN CN202110910079.1A patent/CN113440897A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203428972U (en) * | 2013-09-02 | 2014-02-12 | 清勤水处理科技（上海）有限公司 | Separator and reactor containing same |
| CN204981355U (en) * | 2015-06-05 | 2016-01-20 | 重庆泰克环保科技股份有限公司 | Mechanical stirring clarification tank |
| CN205269143U (en) * | 2015-12-31 | 2016-06-01 | 重庆逸境环保工程有限公司 | Sewage treatment precipitation separation pond |
| CN111137962A (en) * | 2020-01-22 | 2020-05-12 | 四川省科学城天人环保有限公司 | Integrated efficient sedimentation tank sewage treatment device |
| CN215781717U (en) * | 2021-08-09 | 2022-02-11 | 国投信开水环境投资有限公司 | Sludge discharge system of sedimentation tank |
Non-Patent Citations (1)
| Title |
|---|
| 江晶: "《环保机械设备设计》", 30 June 2009, 北京：冶金工业出版社, pages: 149 - 150 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117049693A (en) * | 2023-08-02 | 2023-11-14 | 中铁上海工程局集团市政环保工程有限公司 | Integrated sewage treatment equipment |
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