CN214654162U - Wastewater clarification treatment system based on density monitoring - Google Patents
Wastewater clarification treatment system based on density monitoring Download PDFInfo
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- CN214654162U CN214654162U CN202120706853.2U CN202120706853U CN214654162U CN 214654162 U CN214654162 U CN 214654162U CN 202120706853 U CN202120706853 U CN 202120706853U CN 214654162 U CN214654162 U CN 214654162U
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Abstract
The utility model relates to a waste water treatment technical field discloses a waste water clarification processing system based on density monitoring. The utility model discloses the waste water case passes through waste water pipeline and clarifier intercommunication, the inside cavity of clarifier is separated by first division board and is arranged for the level, the mixed district and the main clarification district of bottom mutual intercommunication, the top is provided with the combination nozzle in the mixed district, the second grade of separating a top and main clarification district top intercommunication by first cofferdam in the main clarification district just clarifies the district, the sedimentation zone of separating a bottom and second grade just clarifies the district intercommunication by the second division board in the second grade just clarifies the district, be provided with the filter layer in the sedimentation zone, the liquid outlet of clarifier passes through the female pipe intercommunication of buffer tube and overflow, it has the densimeter to establish ties on the female pipe of overflow, the liquid outlet and the clarification liquid case intercommunication of the female pipe of overflow. The utility model can automatically adjust the solid content of the pretreated wastewater through the system and the operation method.
Description
Technical Field
The utility model relates to a waste water treatment technical field especially relates to a waste water clarification processing system based on density monitoring.
Background
The density requirement of desulfurization waste water zero discharge apparatus to the waste water raw water is higher, the waste water raw water is clarified through the depositing reservoir by waste water whirl station overflow thick liquid and obtains, most power plants often can't build a large amount of depositing reservoirs because the place is restricted and carry out the waste water clarification, and the effect of depositing reservoir very easily receives factors influences such as depositing reservoir mud level, the instantaneous flow of waste water intaking, flocculating agent addition intensive mixing, has influenced the stability of the waste water raw water quality that gets into follow-up desulfurization waste water zero discharge apparatus, and then influences desulfurization waste water zero discharge apparatus's operating stability. Therefore, the utility model relates to a can realize that the waste water after the clarification has more stable quality, has the significance to improving waste water zero discharge system operating stability and reliability.
SUMMERY OF THE UTILITY MODEL
The utility model provides a waste water clarification treatment system based on density monitoring, which can automatically adjust the solid content of waste water after pretreatment through a system and an operation method.
The technical problem to be solved is that: the quality of the wastewater pretreated by the prior clarification tank is unstable and cannot be monitored, regulated and controlled on line.
In order to solve the technical problem, the utility model adopts the following technical scheme:
the utility model discloses waste water clarification processing system based on density monitoring, its characterized in that: the device comprises a waste water tank, a clarifier and a clarifying liquid tank, wherein the waste water tank is communicated with the clarifier through a waste water pipeline, and a flocculating agent injector and a waste water delivery pump are connected in series on the waste water pipeline;
the inner cavity of the clarifier is divided into a mixing area and a main clarifying area which are horizontally arranged and the bottoms of which are mutually communicated by a first partition plate, the top in the mixing area is provided with a combined nozzle, the opening of the mixing area is arranged downwards, the main clarifying area is divided into a secondary primary clarifying area, the top of which is communicated with the top of the main clarifying area, by a first cofferdam, the secondary primary clarifying area is divided into a settling area, the bottom of which is communicated with the secondary primary clarifying area, by a second partition plate, and the settling area is internally provided with a filter layer;
the liquid outlet of clarifier passes through the buffer tube and communicates with the female pipe of overflow, and it has the densimeter to establish ties on the female pipe of overflow, and the liquid outlet and the clarified liquid case intercommunication of the female pipe of overflow, and the liquid outlet department of the female pipe of overflow is provided with the clear solution on-off valve, and the female pipe of overflow between densimeter and the clear solution on-off valve passes through the back flow and is connected with the waste water tank, and it has the back flow on-off valve to establish ties on the back flow, and the waste water circulating pipe is passed through in the settling zone bottom and the combination nozzle intercommunication at the mixed zone top of clarifier.
The utility model discloses waste water clarification processing system based on density monitoring, it is further, the fixed mud level meter in main clarification district top, the vertical clarifier bottom that extends downwards of mud level meter.
The utility model discloses wastewater clarification processing system based on density monitoring, it is further, be provided with the ball-cock assembly between the female pipe of buffer tube and overflow, in the buffer tube was arranged in to the floater among the ball-cock assembly, the pipe diameter of buffer tube was greater than the pipe diameter setting of the female pipe of overflow.
The utility model discloses waste water clarification processing system based on density monitoring, it is further, the coniform that the section of thick bamboo type casing bottom of clarifier reduces gradually for the diameter is downward, the vertical setting of first division board, top and both sides border are sealed with section of thick bamboo type shells inner wall connection, and first cofferdam is L shape division board, and the tip of horizontal limb board and both sides border are sealed with the section of thick bamboo type shells inside wall fixed seal of clarifier, the vertical setting of second division board, and top and both sides border are sealed fixed in the inner wall of section of thick bamboo type casing respectively.
The utility model discloses waste water clarification processing system based on density monitoring, it is further, main clarification district bottom is provided with the mud scraper, clarifier bottom and sludge discharge pipe intercommunication, it has the sludge pump to establish ties on the sludge discharge pipe.
The utility model discloses waste water clarification processing system based on density monitoring, it is further, the waste water delivery pump is the inverter pump.
The utility model discloses waste water clarification processing system based on density monitoring, it is further, liquid outlet department on clarifier upper portion, be provided with the overflow cofferdam along clarifier circumference.
The utility model discloses waste water clarification processing system based on density monitoring, it is further, the distance between the top of the vertical limb board of first cofferdam and the roof of cartridge type casing is 50cm at least, and the horizontal limb board of first cofferdam and the horizontal level of first division board bottom set up neat, and the distance between the horizontal limb board of second division board lower extreme and first cofferdam is 1-2 m.
The utility model discloses waste water clarification processing system based on density monitoring, it is further, the filter layer top still is provided with the rinse-system, including the shower nozzle that distributes and set up in the filter layer top, connect the shower nozzle and extend the outer wash pipe of clarifier and establish ties the flushometer on wash pipe.
The utility model discloses waste water clarification processing system based on density monitoring, it is further, the medicine inlet and the flocculating agent case intercommunication of flocculating agent injector, the play medicine mouth department of flocculating agent case are provided with the flocculating agent pump, and it has waste water circulating pump and circulation flowmeter to establish ties in proper order along the rivers direction on the waste water circulating pipe.
The utility model discloses waste water clarification processing system based on density monitoring compares with prior art, has following beneficial effect:
the utility model discloses introduce the densimeter in the clarification pretreatment systems of waste water, come the solid content in the waste water after the real-time supervision reaction clarification with density, through the system setting and the processing method who adjusts from monitoring, the solid content in the control waste water clarified liquid, the efficient obtains satisfies follow-up water treatment requirement and has the waste water clarified liquid of stabilizing the quality, comes effective steady operation who maintains subsequent waste water zero release processing system. When the solid content meets the discharge condition, the treated clarified liquid is sent to a subsequent treatment system for further purification treatment; when the solid content exceeds the discharge condition, the treated wastewater can return to the wastewater tank again for circular treatment, and is matched with a selective flocculant, so that the clarification effect can be ensured, the use efficiency of the flocculant can be improved with the highest precision and the cost can be controlled.
The utility model has the advantages that the clarifier is internally provided with the partitions, the heights are staggered, the arrangement is horizontal, the arrangement of the multiple clarification areas prolongs the retention time of the wastewater in the clarifier, the different clarification areas are functionally held, and the self-circulation is utilized to make the stirring of the mixing area; two times of slow flow adjustment are formed by utilizing the cofferdam, so that the clarification effect is improved, the flow speed of the outflow clarified liquid is stabilized, and the measurement precision of the densimeter is improved.
The utility model discloses various operating condition are adjusted in system automatic monitoring, and the waste water that gets off through the filtering layer filters returns the mixed district that directly returns the clarifier, mixes the secondary sedimentation with the flocculating agent, and during the waste water that mixes the district was spouted into with great speed as the power supply simultaneously, waste water and flocculating agent stirring disturbance in the drive mixed district not only can effectively improve the precipitation effect, moreover energy saving and emission reduction.
The wastewater clarification treatment system based on density monitoring of the utility model is further explained with the attached drawings.
Drawings
FIG. 1 is a schematic structural diagram of a wastewater clarification treatment system based on density monitoring;
fig. 2 is a detailed structural view of a portion a in fig. 1.
Reference numerals:
1-a wastewater tank; 2-a clarifier; 21-a first separator plate; 22-a combination nozzle; 23-a mud scraper; 24-a mud level meter; 25-a first cofferdam; 26-a second separator plate; 27-a filter layer; 28-overflow cofferdam; 3-a clear liquid tank; 41-a waste water pipe; 42-a wastewater delivery pump; 43-wastewater flowmeters; 44-waste water on-off valve; 5-a flocculant injector; 51-a flocculant box; 52-a flocculant pump; 61-sludge discharge pipe; 62-sludge pump; 71-a buffer tube; 72-overflow main; 73-a ball float valve; 8-a densitometer; 91-clear liquid open and close valve; 92-a return conduit; 93-a reflux on-off valve; 94-waste water circulation pipe; 95-wastewater circulation pump; 96-circulation flow meter;
i-a mixing zone; II-a main clarification zone; III-second stage preliminary clarification zone; IV-a precipitation zone.
Detailed Description
As shown in fig. 1 and 2, the utility model discloses waste water clarification processing system based on density monitoring includes waste water tank 1, clarifier 2, clarification liquid case 3, desulfurization waste water sends to waste water tank 1 through the pipeline and stores the buffering, waste water tank 1 passes through waste water pipeline 41 and clarifier 2 intercommunication, it has waste water delivery pump 42 to establish ties on the waste water pipeline 41, it has waste water flowmeter 43 to establish ties on waste water pipeline 41 between waste water delivery pump 42 and the clarifier 2 for the flow of the waste water that the accurate monitoring got into clarifier 2, the accurate control degree of reaction and the clarification effect of being convenient for.
A wastewater open-close valve 44 is connected in series on the wastewater pipeline 41 between the wastewater tank 1 and the wastewater delivery pump 42, the wastewater delivery pump 42 is a variable frequency pump, and the flow rate Q1 is 2-30m3The wastewater conveying frequency can be adjusted at any time according to the wastewater treatment condition, along with the increase of the mud content of the clarification tank, the same wastewater feeding amount can cause the turbidity of the clarification liquid, so that the clarification effect is greatly reduced, and the use of the variable frequency pump can reduce the feeding amount of the wastewater when the mud content of the clarification water is increased, so that the phenomenon of excessive deterioration of the clarification tank can be effectively avoided.
A flocculant injector 5 is connected in series to the wastewater pipe 41 between the wastewater on-off valve 44 and the wastewater delivery pump 42, a chemical inlet of the flocculant injector 5 is communicated with a flocculant tank 51, and a flocculant pump 52 is provided at a chemical outlet of the flocculant tank 51. So that when the high solid content in the clarified liquid and the need of strengthening the pretreatment intensity are monitored, the flocculant can be selectively added into the flocculant injector 5 to be mixed with the wastewater flowing through the flocculant injector 5 by remotely controlling the on-off of the flocculant pump 52, thereby increasing the precipitation and improving the clarification effect.
The flocculant pump 52 is a variable frequency pump, which is convenient for adjusting the injection amount of the flocculant and improving the application efficiency of the flocculant.
The bottom of a cylindrical shell of the clarifier 2 is in a conical shape with the diameter gradually reduced downwards, an internal cavity is divided into a mixing area and a main clarifying area which are horizontally arranged and are communicated with each other by a first partition plate 21, the first partition plate 21 is vertically arranged, the top end and two side edges are connected and sealed with the inner wall of the cylindrical shell, the mixing area is communicated with the bottom of the main clarifying area, the distance between the bottom end of the first partition plate 21 and the edge of the upper end of the conical shape is 1-1.3m, the turbidity in the clarifying pool easily caused by untimely sludge discharge in the clarifier 2 can be effectively prevented, a combined nozzle 22 is arranged at the top in the mixing area, the combined nozzle 22 comprises at least 2 nozzles with openings arranged downwards for jetting fluid downwards at high pressure to drive the wastewater in the mixing area to form a rotational flow, so as to achieve the effect of stirring and mixing, compared with the stirring of an internal spiral blade, the internal structure is simpler without a stirrer, the space is saved, the energy is saved, and the failure rate is low. The bottom of the main clarification zone is provided with a mud scraper 23 which is used for scraping solid sediment deposited on the inner surface of the conical cylinder at the bottom of the main clarification zone so as to facilitate the internal cleaning of the clarifier 2; the bottom of the clarifier 2 is communicated with a sludge discharge pipe 61, a sludge pump 62 is connected in series on the sludge discharge pipe 61, and the sludge pump 62 is a variable frequency pump and is used for controlling the discharge condition of sludge at the bottom of the main clarification area. The top is fixed with mud level meter 24 in the main clarification district, and mud level meter 24 is vertical stretches main clarification district bottom downwards for the mud liquid level of main clarification district bottom of real-time supervision avoids the too high clarification effect that reduces of mud level, increases clear liquid backward flow volume, influences the clarification tank and wholly exerts power.
A secondary primary clarification area with the top communicated with the top of the main clarification area is separated from the main clarification area by a first cofferdam 25, the first cofferdam 25 is an L-shaped partition plate, the end part and two side edges of a horizontal limb plate are fixedly sealed with the inner side wall of the cylindrical shell of the clarifier 2, the distance between the top end of a vertical limb plate and the top plate of the cylindrical shell is at least 50cm, so that supernatant in the main clarification area can conveniently flow into the secondary primary clarification area, and a large amount of supernatant can be prevented from simultaneously flowing into the secondary primary clarification area to destroy the clarification effect; the horizontal limb plate of the first cofferdam 25 is horizontally arranged at the same level with the bottom end of the first isolation plate 21, and forms high-low zonal clarification with the main clarification zone, and the supernatant liquid after being clarified and precipitated in the main clarification zone is clarified for the second time, so that the clarification effect is better; meanwhile, the secondary primary clarification area is also of a large cofferdam structure, the flow speed of the wastewater entering the secondary primary clarification area is slowed down, and the flow of the clarified liquid about to flow out of the clarifier 2 is stabilized.
A sedimentation zone with the bottom communicated with the secondary primary clarification zone is separated in the secondary primary clarification zone by a second isolation plate 26, the second isolation plate 26 is vertically arranged, the top end and the two side edges are respectively fixed on the inner wall of the cylindrical shell in a sealing way, and the distance between the lower end of the second isolation plate 26 and the horizontal limb plate of the first cofferdam 25 is 1-2m, so that the speed of wastewater entering the sedimentation zone is well limited; a filtering layer 27 is arranged in the sedimentation zone and is used for filtering the supernatant after the secondary clarification in the secondary primary clarification zone, so as to prevent the residual solid sediment in the supernatant from being discharged out of the clarifier 2 along with the clarified liquid, the filtering layer 27 can adopt a coarse filter, and the aperture of the coarse filter can be 200-1000 μm; an overflow cofferdam 28 is arranged at the liquid outlet on the upper part of the clarifier 2 along the circumferential direction of the cylindrical shell so as to maintain the stability of the liquid layer on the cofferdam plate and the uniform overflow of the clarified liquid, thus effectively improving the accuracy of the subsequent measurement.
A flushing system is also arranged above the filter layer 27 and comprises flushing nozzles distributed above the filter layer 27, a flushing water pipe connected with the flushing nozzles and extending out of the clarifier 2, and flushing valves connected in series on the flushing water pipe.
The liquid outlet of the clarifier 2 is communicated with an overflow main pipe 72 through a buffer pipe 71, a float valve 73 is arranged between the buffer pipe 71 and the overflow main pipe 72, a float ball in the float valve 73 is arranged in the buffer pipe 71, the pipe diameter of the buffer pipe 71 is larger than that of the overflow main pipe 72, and specifically, the pipe diameter of the buffer pipe 71 can be 3-10 times that of the overflow main pipe 72; the overflow main pipe 72 is connected in series with a densimeter 8 for monitoring the density of the clarified liquid flowing through the overflow main pipe 72 as an index for measuring the solid content in the clarified liquid, because the buffer pipe 71 with a larger pipe diameter is arranged, the clarified liquid is stored in the buffer pipe 71, when reaching a certain liquid level, the ball valve is triggered, the ball float valve 73 is started, the clarified liquid enters the overflow main pipe 72, the flow stably flows through the densimeter 8, and the measurement precision of the densimeter 8 can be effectively improved; the liquid outlet of the overflow main pipe 72 is communicated with the clarified liquid tank 3, a clear liquid open-close valve 91 is arranged at the liquid outlet of the overflow main pipe 72, the overflow main pipe 72 between the densimeter 8 and the clear liquid open-close valve 91 is connected with the waste water tank 1 through a return pipe 92, and the return pipe 92 is connected with a return open-close valve 93 in series for returning the clarified liquid which does not reach the standard in density monitoring to the waste water tank 1 for circulation treatment.
The settling zone bottom is through waste water circulating pipe 94 and the combination nozzle 22 intercommunication at the mixing zone top of clarifier 2, it has wastewater circulating pump 95 and circulation flowmeter 96 to establish ties in proper order along the rivers direction on the waste water circulating pipe 94, be used for sending back the higher secondary clarified liquid of solid content that will filter and precipitate to the mixing zone, mix the sediment with the flocculating agent once more, the circulation is clarified, both can regard as the fluid stirring disturbance in the downward high-pressure injection drive mixing zone of power supply of combination nozzle 22, reach the effect of mixing, be convenient for clear up the solid impurity of first cofferdam 25 bottom again, improve the clarification effect, energy utilization is rateed highly, the system architecture has been simplified.
The utility model can also comprise a control system, a waste water open/close valve 44, a waste water delivery pump 42, a flocculating agent pump 52, a sludge pump 62, a flushing valve, a float valve 73, a clear liquid open/close valve 91, a reflux open/close valve 93 and a waste water circulating pump 95, wherein the signal input ends of the waste water open/close valve and the waste water circulating pump are respectively electrically connected with the signal output end of the control system; the signal outputs of the circulation flow meter 96, the densitometer 8 and the wastewater flow meter 43 are electrically connected to the signal inputs of the control system, respectively.
The utility model discloses a processing method of waste water clarification processing system based on density monitoring, including following step:
step one, accumulating waste water, and entering initial circulation operation: pumping the wastewater into a clarifier 2 for sedimentation and clarification, and returning the generated clarified liquid to a wastewater tank 1;
the specific process is as follows:
1.1, opening a waste water on-off valve 44, starting a waste water conveying pump 42, and opening a backflow on-off valve 93;
1.2, pumping the wastewater in the wastewater tank 1 into a clarifier 2 through a wastewater pipeline 41;
1.3, sequentially passing the wastewater through a mixing zone, a main clarification zone, a secondary primary clarification zone and a precipitation zone;
1.4, the wastewater filtered by the sedimentation layer returns to the wastewater tank 1 through a return pipe 92, and no wastewater is treated and discharged from the system at this stage.
Step two, regulating and controlling the pumping rate of the wastewater according to the monitoring result of the mud level meter 24;
regulating the pumping frequency H1 of the wastewater delivery pump 42 according to the real-time measurement result of the mud level meter 24 in the clarifier 2;
h1= max [ (50-20 × L), 20] formula (i)
Wherein H1 is the pumping frequency of the wastewater delivery pump 42;
l is the mud level height in the main clarification zone measured by the mud level meter 24.
The normal work of the waste water delivery pump 42 is ensured, and meanwhile, when the sludge in the main clarification area is gradually increased, the pumping frequency of the waste water delivery pump 42 is properly reduced, the output force is reduced, and the clarification effect can be ensured to a certain extent.
Step three, starting a wastewater circulating pump 95, returning filtrate of the clarified liquid to the clarifier 2 through a wastewater circulating pipe 94, and using the filtrate as a power source to realize stirring in the clarifier 2; the pumping frequency of the wastewater circulation pump 95 is determined according to the pumping frequency of the wastewater delivery pump 42;
specifically, the pumping frequency of the wastewater circulating pump 95 is 0.1 to 0.3 times of the pumping frequency of the wastewater delivery pump 42, so that the purpose of circulating and stirring by using wastewater can be efficiently realized.
After the wastewater circulation pump 95 is turned on, the filtrate remaining at the bottom of the settling zone is returned to the mixing zone of the clarifier 2 through the wastewater circulation pipe 94.
And step four, controlling to open a clear liquid on-off valve 91 or a return on-off valve 93 according to the real-time monitoring result of the densimeter 8, sending the clear liquid meeting the solid content requirement to the clear liquid tank 3, and circularly clarifying the clear liquid not meeting the solid content requirement.
The method specifically comprises the following steps:
4.1, when the overflow cofferdam 28 begins to overflow, the filtered clarified liquid enters the buffer tube 71 and accumulates in the buffer tube 71, when the water level in the buffer tube 71 reaches the release water level, the float valve 73 is automatically opened, and the clarified liquid stably flows into the overflow main pipe 72;
4.2, the density meter 8 monitors that the density of the flowing clear liquid meets the requirement, the reflux on-off valve 93 is closed, the clear liquid on-off valve 91 is opened, and the clear liquid is sent to the clear liquid tank 3 through the overflow main pipe 72;
4.3, when the density of the flowing clarified liquid is monitored by the densimeter 8 to be not meet the requirement and the solid content in the clarified liquid is too high, opening a backflow opening and closing valve 93, closing a clear liquid opening and closing valve 91, controlling and adjusting the pumping frequency of a wastewater circulating pump 95 to be 0.8-1.0 times of H1 so as to accelerate circulation, sending the clarified liquid to the wastewater tank 1 through a backflow pipe 92, and returning the filtered liquid to the clarifier 2 through a wastewater circulating pipe 94;
step five, when the clear liquid density still can not meet the requirements after the frequency of the wastewater circulating pump 95 is increased and the wastewater circulating pump runs for 1h to 2h, starting the flocculant pump 52, injecting a flocculant into the wastewater through the flocculant injector 5, and uniformly mixing the flocculant and the wastewater in the mixing area of the clarifier 2, so that solid impurities in the wastewater are coagulated into impurities with larger volume, and the precipitation is facilitated;
the density of clear liquid is 1020-1030 kg/m3Controlling the frequency of a flocculating agent pump 52 to be 30HZ and the density of clear liquid to be 1030-1040 kg/m3In the interval, the frequency of the flocculant pump 52 is controlled at 40HZ, and the density of the clear liquid is 1040kg/m3Above, the flocculant pump 52 frequency was controlled at 50 HZ.
Step six, discharging sludge at the bottom of the main clarification area according to the real-time measurement result of the sludge level meter 24;
specifically, when the measured value of the sludge level meter 24 reaches 1/3-1/2 of the height of the conical shell of the clarifier 2, the sludge pump 62 is activated to discharge the sludge sediment at the bottom of the main clarification zone out of the clarifier 2 through the sludge discharge pipe 61.
Step seven, the filter layer 27 is washed regularly;
the flushing valve is started periodically to flush the filter layer 27, the flushing time is 10min, and the flushing frequency is 1 time/24 h.
The above-mentioned embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.
Claims (10)
1. Waste water clarification processing system based on density monitoring, its characterized in that: the device comprises a waste water tank (1), a clarifier (2) and a clarified liquid tank (3), wherein the waste water tank (1) is communicated with the clarifier (2) through a waste water pipeline (41), and a flocculating agent injector (5) and a waste water delivery pump (42) are connected in series on the waste water pipeline (41);
the inner cavity of the clarifier (2) is divided into a mixing area and a main clarifying area which are horizontally arranged and the bottoms of which are mutually communicated by a first partition plate (21), the top in the mixing area is provided with a combined nozzle (22), the main clarifying area is divided into a secondary primary clarifying area by a first cofferdam (25), the top of the secondary primary clarifying area is communicated with the top of the main clarifying area, the secondary primary clarifying area is divided into a settling area, the bottom of the settling area is communicated with the secondary primary clarifying area, and a filter layer (27) is arranged in the settling area;
the liquid outlet of the clarifier (2) is communicated with an overflow main pipe (72) through a buffer pipe (71), a densimeter (8) is connected on the overflow main pipe (72) in series, the liquid outlet of the overflow main pipe (72) is communicated with the clarified liquid tank (3), a clear liquid open-close valve (91) is arranged at the liquid outlet of the overflow main pipe (72), the overflow main pipe (72) between the densimeter (8) and the clear liquid open-close valve (91) is connected with the waste water tank (1) through a return pipe (92), a return open-close valve (93) is connected on the return pipe (92) in series, and the bottom of the settling zone is communicated with a combined nozzle (22) at the top of a mixing zone of the clarifier (2) through a waste water circulating pipe (94).
2. The wastewater clarification treatment system based on density monitoring as claimed in claim 1, characterized in that: the mud level meter (24) is fixed at the top in the main clarification zone, and the mud level meter (24) vertically extends downwards to the bottom of the clarifier (2).
3. The wastewater clarification treatment system based on density monitoring as claimed in claim 1, characterized in that: a float ball valve (73) is arranged between the buffer tube (71) and the overflow main pipe (72), a float ball in the float ball valve (73) is arranged in the buffer tube (71), and the pipe diameter of the buffer tube (71) is larger than that of the overflow main pipe (72).
4. The wastewater clarification treatment system based on density monitoring as claimed in claim 1, characterized in that: the bottom of the cylindrical shell of the clarifier (2) is in a conical shape with the diameter gradually reduced downwards, the first isolation plate (21) is vertically arranged, the top end and the two side edges are connected and sealed with the inner wall of the cylindrical shell, the first cofferdam (25) is an L-shaped isolation plate, the end part and the two side edges of the horizontal limb plate are fixedly sealed with the inner side wall of the cylindrical shell of the clarifier (2), the second isolation plate (26) is vertically arranged, and the top end and the two side edges are respectively fixed on the inner wall of the cylindrical shell in a sealing manner.
5. The wastewater clarification treatment system based on density monitoring as claimed in claim 1, characterized in that: the bottom of the main clarification area is provided with a mud scraper (23), the bottom of the clarifier (2) is communicated with a sludge discharge pipe (61), and a sludge pump (62) is connected in series on the sludge discharge pipe (61).
6. The wastewater clarification treatment system based on density monitoring as claimed in claim 1, characterized in that: the waste water delivery pump (42) is a variable frequency pump.
7. The wastewater clarification treatment system based on density monitoring as claimed in claim 1, characterized in that: an overflow cofferdam (28) is arranged at the liquid outlet at the upper part of the clarifier (2) along the circumferential direction of the clarifier (2).
8. The wastewater clarification treatment system based on density monitoring as claimed in claim 1, characterized in that: the distance between the top end of the vertical limb plate of the first cofferdam (25) and the top plate of the cylindrical shell is at least 50cm, the horizontal limb plate of the first cofferdam (25) is horizontally and flatly arranged with the bottom end of the first isolation plate (21), and the distance between the lower end of the second isolation plate (26) and the horizontal limb plate of the first cofferdam (25) is 1-2 m.
9. The wastewater clarification treatment system based on density monitoring as claimed in claim 1, characterized in that: the filter layer (27) top still is provided with rinse-system, including the distribution set up the washing terminals in filter layer (27) top, connect washing terminals and extend to clarifier (2) outer wash pipe and the flushometer of establishing ties on wash pipe.
10. The wastewater clarification treatment system based on density monitoring as claimed in claim 1, characterized in that: the chemical inlet of the flocculant injector (5) is communicated with the flocculant box (51), the chemical outlet of the flocculant box (51) is provided with a flocculant pump (52), and a wastewater circulating pump (95) and a circulating flow meter (96) are sequentially connected in series on the wastewater circulating pipe (94) along the water flow direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120706853.2U CN214654162U (en) | 2021-04-08 | 2021-04-08 | Wastewater clarification treatment system based on density monitoring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120706853.2U CN214654162U (en) | 2021-04-08 | 2021-04-08 | Wastewater clarification treatment system based on density monitoring |
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| Publication Number | Publication Date |
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| CN214654162U true CN214654162U (en) | 2021-11-09 |
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2021
- 2021-04-08 CN CN202120706853.2U patent/CN214654162U/en active Active
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