CN108689584B - Sludge mixing, concentrating and discharging integrated tank - Google Patents
Sludge mixing, concentrating and discharging integrated tank Download PDFInfo
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- CN108689584B CN108689584B CN201810818505.7A CN201810818505A CN108689584B CN 108689584 B CN108689584 B CN 108689584B CN 201810818505 A CN201810818505 A CN 201810818505A CN 108689584 B CN108689584 B CN 108689584B
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- 239000010802 sludge Substances 0.000 title claims abstract description 69
- 238000002156 mixing Methods 0.000 title claims abstract description 49
- 238000007599 discharging Methods 0.000 title claims abstract description 18
- 238000003756 stirring Methods 0.000 claims abstract description 53
- 238000005189 flocculation Methods 0.000 claims abstract description 45
- 230000016615 flocculation Effects 0.000 claims abstract description 44
- 238000000926 separation method Methods 0.000 claims abstract description 33
- 238000001556 precipitation Methods 0.000 claims abstract description 29
- 238000005192 partition Methods 0.000 claims abstract description 27
- 230000007246 mechanism Effects 0.000 claims abstract description 22
- 238000005345 coagulation Methods 0.000 claims abstract description 12
- 230000015271 coagulation Effects 0.000 claims abstract description 12
- 239000000706 filtrate Substances 0.000 claims description 18
- 239000011550 stock solution Substances 0.000 claims description 15
- 239000000243 solution Substances 0.000 claims description 7
- 238000009833 condensation Methods 0.000 claims description 2
- 230000005494 condensation Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 18
- 230000003311 flocculating effect Effects 0.000 abstract description 7
- 230000006872 improvement Effects 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 230000010354 integration Effects 0.000 abstract 1
- 238000004904 shortening Methods 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 18
- 238000000034 method Methods 0.000 description 17
- 230000008569 process Effects 0.000 description 17
- 239000010865 sewage Substances 0.000 description 10
- 229910052720 vanadium Inorganic materials 0.000 description 9
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 9
- 239000000084 colloidal system Substances 0.000 description 7
- 239000006228 supernatant Substances 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000004062 sedimentation Methods 0.000 description 5
- 238000004064 recycling Methods 0.000 description 4
- 229940037003 alum Drugs 0.000 description 3
- 239000000701 coagulant Substances 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000006460 hydrolysis reaction Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001376 precipitating effect Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/19—Stirrers with two or more mixing elements mounted in sequence on the same axis
- B01F27/191—Stirrers with two or more mixing elements mounted in sequence on the same axis with similar elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/91—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with propellers
Abstract
The invention discloses a sludge mixing, concentrating and discharging integrated tank, which comprises a tank body, a stirring mechanism arranged in the tank body and a driving mechanism for driving the stirring mechanism, wherein the tank body is divided into a mixing coagulation section, a mixing flocculation section and a precipitation separation section by a first pair of partition boards and a second pair of partition boards from top to bottom in sequence, and the stirring mechanism comprises: the stirring shaft penetrates through the tank body from top to bottom, and the first type of blades, the second type of blades, the third type of blades and the fourth type of blades are connected with the stirring shaft from top to bottom and gradually become smaller in size. The sludge mixing, concentrating and discharging integrated tank disclosed by the invention has the advantages of small occupied area, integration of mixing, flocculating and separating functions, shortening of the time required by precipitation and separation, great improvement of treatment efficiency and separation effect and reduction of operation cost.
Description
Technical Field
The invention relates to a mixed flocculation precipitation mud-water separation device in a sludge treatment system, in particular to a sludge mixing concentration discharge integrated tank, which belongs to the field of sludge treatment related equipment and is suitable for various industries such as municipal administration, chemistry, metallurgy, papermaking, food and the like.
Background
Sludge treatment is a process of performing reduction, stabilization and harmless treatment on sludge. In a conventional sludge treatment system, sludge is continuously sent to a cement structure storage concentration tank with a large occupied area through a pump and a pipeline, sedimentation treatment is carried out for a long time in the concentration tank, and turbid liquid which is not completely separated into mud water is synchronously recovered to a treatment front stage for recycling treatment. Different treatment modes are adopted according to different particle sizes of the disperse phase, wherein suspension with the particle size of more than 100nm can be treated by precipitation or filtration, and partial suspension and colloid solution with the particle size of between 1nm and 100 mu m (0.01-1 wire) can be treated by coagulation.
Coagulation is a process of adding chemical agents into wastewater in advance to destroy the stability of colloid, so that colloid and fine suspended matters in the wastewater are aggregated into floccules with separability, and then separating and removing the floccules.
Firstly, mixing is the first step of the reaction and is also a very important step, in which the hydrolysis product of the coagulant should be rapidly diffused into each detail in the water body, so that all the colloidal particles are destabilized and coagulated at almost the same instant, and thus a good flocculation effect can be obtained, since the colloidal particles are simultaneously destabilized and coagulated during the mixing process, which can be called the primary coagulation process, but the main function of this process is the mixing process, and thus is called the mixing process in the industry.
The flocculation growth process is then the process of tiny particle contact and collision. The flocculation effect is mainly determined by the following two factors: firstly, the binding capacity of the polymer complex generated after the hydrolysis of the coagulant to form adsorption bridging is determined by the nature of the coagulant; secondly, the probability of collision of tiny particles and how to control them to perform reasonably effective collision are determined by the dynamics of the device. In addition to a large number of collisions of particles, a reasonable and effective collision of particles needs to be controlled to achieve a good flocculation effect, and the collision of the particles can be called effective collision.
Finally, the sedimentation equipment is an important link of mud-water separation in the water treatment process, and the running condition of the sedimentation equipment directly influences the quality of effluent water.
The process of conventional coagulation treatment can be briefly summarized as follows: the flocculant is dissolved in a flocculant dissolution tank with a stirrer and then transported by a pump, pipeline to a mixing flocculation tank where the sludge and flocculant are mixed together by the stirrer to produce flocs and supernatant. Finally, the flocs and supernatant are transported via a line to a dewatering device and subjected to a dewatering treatment therein.
The patent with the application number of 201620982592.6 discloses a flocculation and precipitation sewage treatment device, when the flocculation and precipitation sewage treatment device works, firstly, sewage is introduced into a flocculation tank through a mixed feeding pipeline, then a drug flocculant is thrown into the flocculation tank from a dosing port, a variable frequency motor is started, a main shaft of the variable frequency motor drives a driving wheel to rotate, the driving wheel drives a driven wheel on a rotating shaft to rotate through a belt, the rotating shaft starts to rotate, a stirring rod on the rotating shaft starts to stir the sewage in the flocculation tank, and when the stirring rod stirs, steam is introduced into the flocculation tank from a steam inlet, the steam enters the sewage to form bubbles, the bubbles are helpful for accelerating stirring sufficiently and uniformly, moreover, the introduced steam is at a temperature which enables flocculation reaction of the sewage to be more vigorous, the flocculant and tiny suspended matters and colloidal particles in the water undergo flocculation reaction, and small particles are flocculated and aggregated into large particles; after a period of flocculation reaction, the connecting pipeline is opened to be provided with a first valve, sewage in the flocculation tank enters the sedimentation tank through the connecting pipeline, supernatant is discharged outwards through the water outlet joint through sedimentation, and settled sludge is discharged through the sludge outlet joint. The sewage treatment device has the advantages of simple and compact structure, reasonable design, good stirring effect and full stirring, and ensures that suspended particles in sewage are gathered and become large to form flocculation, and finally the sewage is cleaned through precipitation.
However, in the prior art, the coagulation treatment devices such as the patent mentioned above have the problems of large occupied area, less effective collision of tiny particles, high treatment cost, low efficiency and the like, and the improvement is urgently needed.
Disclosure of Invention
Aiming at solving the defects of the prior art, the invention aims to provide the sludge mixing, concentrating and discharging integrated tank which can increase the effective collision of tiny particles and improve the treatment efficiency and flocculation effect.
In order to achieve the above object, the present invention adopts the following technical scheme:
the utility model provides a mud mixes concentrated integrative jar of discharging, includes the jar body, installs the rabbling mechanism in the jar body and is used for driving the actuating mechanism of rabbling mechanism;
the tank body is divided into a mixed coagulation section, a mixed flocculation section and a precipitation separation section from top to bottom by a first pair of partition boards and a second pair of partition boards in sequence, a sludge stock solution inlet is arranged on the side wall of the mixed coagulation section, a flocculant solution inlet is arranged at the sludge stock solution inlet, and a filtrate outlet and a sludge outlet are respectively arranged on the side wall and the bottom wall of the precipitation separation section;
the stirring mechanism comprises: the stirring shaft penetrates through the tank body, the first type of paddles, the second type of paddles, the third type of paddles and the fourth type of paddles are connected with the stirring shaft from top to bottom and gradually smaller in size, the first type of paddles are positioned in the mixing condensation section, a left partition plate and a right partition plate of a first pair of partition plates are symmetrically arranged below the first type of paddles, the left partition plate and the right partition plate incline downwards gradually from the side wall to the center, and a gap is reserved between the left partition plate and the stirring shaft to form a first outlet; the second type of paddles and the third type of paddles are both positioned at the mixing flocculation section, the second pair of baffles are arranged below the third type of paddles, the second pair of baffles comprise short baffles and long baffles which incline downwards gradually from the side wall to the center, the long baffles extend to the lower side of the short baffles after being penetrated by the stirring shaft, gaps are reserved between the long baffles and the short baffles to form a second outlet, and the second outlet is far away from the side wall where the filtrate outlet is positioned; the fourth type paddle is positioned at the precipitation separation section and is close to the bottom wall of the tank body, and the filtrate outlet is positioned at the upper side wall of the precipitation separation section.
Preferably, the driving mechanism is a motor, and is arranged at the top of the tank body, and an output shaft of the motor is connected with the stirring shaft; the motor is arranged at the top of the tank body, so that the occupied area of the equipment can be reduced, and the stirring shaft can be operated more stably.
Preferably, a plurality of supporting legs are arranged at the bottom of the tank body, so that deposited sludge is conveniently discharged from the sludge outlet.
Preferably, the top wall of the tank body is also provided with a vent valve and a pressure gauge, so that the pressure in the integrated tank is detected in the use process, and the safety is ensured.
More preferably, the sludge stock solution inlet and the filtrate outlet are positioned on the same side wall, and the observation mirror is arranged on the opposite side wall, so that an operator can conveniently monitor the state in the tank body in real time, and the stirring speed is regulated according to actual conditions.
More preferably, an avoidance space is reserved between the sludge output port and the fourth type blade, so that the sludge is conveniently and normally discharged, and the blockage is avoided.
More preferably, the bottom wall of the tank body is arc-shaped, and the sludge slowly flows along the arc-shaped bottom wall towards the sludge outlet, so that bottom deposition is avoided.
Still further preferably, the first class paddle, the second class paddle, the third class paddle and the fourth class paddle all comprise arc-shaped blades which are arranged at equal angular intervals, long sludge after flocculation is prevented from winding in the tank body, each arc-shaped blade extends upwards in a gradually inclined mode from the direction of the side wall of the stirring shaft, the inclination angles are the same, and therefore stirring uniformity can be improved, meanwhile, integral rotation of the sludge can be avoided, and flocculation effect is guaranteed.
And preferably, the lengths and widths of the blades of the first type of blades, the second type of blades, the third type of blades and the fourth type of blades are gradually reduced, so that the design is quite reasonable, the requirements of functional areas of each section are ingeniously met, and the flocculation effect and the water treatment efficiency are optimized.
More preferably, the length of the long partition plate is 2-4 times that of the short partition plate, so that the second outlet is offset at one side far away from the filtrate outlet, and the alum blossom slowly enters the precipitation separation section to obtain effective precipitation and orderly discharge.
The invention has the advantages that: (1) The sludge mixing, concentrating and discharging integrated tank disclosed by the invention has the advantages that the occupied area is small, the functions of mixing, flocculating and separating are integrated, the time required by precipitation and separation is shortened, the treatment efficiency and the separation effect are greatly improved, and the integrated tank is suitable for industrial production; (2) The tank body is divided into a mixed coagulation section, a mixed flocculation section and a precipitation separation section from top to bottom, and stirring paddles of each section are also improved: the fluid in the mixing and flocculating section is stirred quickly and uniformly, the sludge does not generate excessive rotation, and the sludge flows quickly from the first outlet to the mixing and flocculating section; the stirring intensity at the upper part of the mixing flocculation section is moderate, small flocs are effectively collided and slowly grow up, the blade blades at the lower section are smaller, so that large vanadium flowers are in a suspension state and cannot be immediately precipitated, and the large vanadium flowers slowly flow to the precipitation separation section for effective separation and discharge; (3) The second outlet between the mixing flocculation section and the precipitation separation section is offset near the opposite side walls of the filtrate outlet, so that the muddy water is better and more fully separated, the supernatant fluid can be directly discharged from the filtrate outlet without recycling treatment, the solid content of the sludge discharged from the sludge outlet is higher, the load of a subsequent dewatering device is reduced, and the running cost is reduced.
Drawings
FIG. 1 is a schematic diagram of a preferred embodiment of an integrated sludge mixing, concentrating and discharging tank of the present invention;
FIG. 2 is a top view of the first type of blade in the embodiment of FIG. 1;
fig. 3 is a side view of one of the blades of the first type of blade in the embodiment of fig. 1.
Meaning of reference numerals in the drawings: 1. the device comprises a driving mechanism, 2, a pressure gauge, 3, a stirring shaft, 4, a tank body, 5, a sludge stock solution inlet, 6, a first type blade, 7, a first pair of partition plates, 701, a left partition plate, 702, a right partition plate, 8, a second type blade, 9, a third type blade, 10, a second pair of partition plates, 1001, a short partition plate, 1002, a long partition plate, 11, a filtrate outlet, 12, a fourth type blade, 13, a sludge outlet, 14, an observation mirror, 15, a flocculant solution inlet, 16 and a blow-down valve.
Detailed Description
The invention is described in detail below with reference to the drawings and the specific embodiments.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. 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 devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1, the sludge mixing, concentrating and discharging integrated tank comprises a tank body 4, a stirring mechanism and a driving mechanism 1, wherein a plurality of supporting legs are arranged at the bottom of the tank body 4, the stirring mechanism is arranged inside the tank body 4, and the driving mechanism 1 drives a stirring shaft 3 to rotate so as to enable fluid in the sludge mixing, concentrating and discharging integrated tank to move, and mixing flocculation and sludge-water separation are realized.
The device integrates mixing, flocculation and separation functions, has the advantages of small occupied area, convenience and practicability, and is divided into a mixing coagulation section, a mixing flocculation section and a precipitation separation section from top to bottom by the first pair of partition plates 7 and the second pair of partition plates 10 in sequence in the tank body 4. The side wall of the mixing and condensing section is provided with a sludge stock solution inlet 5, the sludge stock solution enters the tank body 4 from an arrow at the upper side, the sludge stock solution inlet 5 is provided with a flocculant solution inlet 15, in fig. 1, the flocculant solution inlet 15 is arranged below the side wall of the sludge stock solution inlet 5, that is, the sludge stock solution is mixed with flocculant when entering the tank body 4, the side wall and the bottom wall of the precipitation separation section are respectively provided with a filtrate outlet 11 and a sludge outlet 13, the filtrate outlet 11 and the sludge outlet 13 are respectively used for discharging separated supernatant and sludge, the supernatant can be directly discharged without recycling separation, the solid content in the sludge is higher, and the load born by a subsequent dewatering device is also reduced.
The above-mentioned good separation effect must be based on a superior flocculation effect, and in order to achieve a good flocculation effect, it is necessary to increase the effective collision of particles in addition to a large number of collisions of particles, and only the collisions that cause the particles to agglomerate can be called effective collisions. In the existing research theory, the kinetic cause of the collision of the tiny particles in the water flow is not yet uniformly concluded, and the water treatment engineering discipline considers the velocity gradient as the kinetic cause of the collision of the tiny particles in the water. According to the theory, in order to increase the collision probability, the speed gradient must be increased, and the increase of the speed gradient must increase the energy consumption of the water body, namely the flow rate of the flocculation tank, but the flocculation process is a speed-limited process, and as alum flowers grow up, the water flow speed is continuously reduced, which is a disadvantageous factor for the effective collision of the tiny particles.
In order to overcome the above disadvantages and optimize flocculation effect and improve separation efficiency, the stirring mechanism is improved, as shown in fig. 1, and the stirring mechanism comprises: the stirring shaft 3 penetrates through the tank body 4 from top to bottom, and the first type of paddles 6, the second type of paddles 8, the third type of paddles 9 and the fourth type of paddles 12 which are connected with the stirring shaft 3 from top to bottom and gradually become smaller in size, wherein the term "smaller in size" includes not only smaller in length but also smaller in width, namely smaller in a size and b size in fig. 2. Fig. 2 shows a top view of a first type of blade 6, the shape and layout of the second type of blade 8, the third type of blade 9 and the fourth type of blade 12 being identical to those of the first type of blade 6, except for the dimensions, namely: four types of paddles all include the arc blade that three equiangular intervals set up, can avoid flocculating back longer mud take place the winding in jar body 4, every arc blade all extends and inclination is the same from the gradual upward slope of (mixing) shaft 3 to lateral wall direction, and its side view is as shown in figure 3, can increase stirring homogeneity like this, can avoid mud to rotate as a whole simultaneously again, ensures flocculation effect, and noise is low, the energy consumption is low, vibration is little, dynamic efficiency is high during operation.
In the foregoing, the mixing flocculation section and the mixing flocculation section are separated by the first pair of partition plates 7, and when the flocculant is put into the sludge stock solution, hydrolysis reaction rapidly occurs in water and generates heterocharge colloid, and the heterocharge colloid contacts with the colloid and suspended matters in the sludge stock solution to form fine vanadium flowers, and the mixing process is rapid and uniform, is completed within about 10-30 s, and generally should not exceed 2min. Therefore, the mixing process needs to generate rapid disturbance to generate a large amount of fine colloid, because the size of the first type blade 6 is the largest, the left baffle 701 and the right baffle 702 of the first pair of baffles 7 are symmetrically arranged below the first type blade 6, and the left baffle 701 and the right baffle 702 are gradually inclined downwards from the side wall to the center, a gap is reserved between the left baffle 701 and the right baffle 702 and the stirring shaft 3 to form a first outlet, and small flocs orderly and rapidly flow to a mixing flocculation section below from the first outlet.
The second type of paddles 8 and the third type of paddles 9 are both positioned in a mixing flocculation section, and the mixing flocculation section has the effect of gradually flocculating small flocs into large flocs so as to facilitate subsequent precipitation and separation, and the process has certain residence time (5-10 minutes) and proper stirring strength so as to enable the small flocs to collide with each other effectively, prevent the generated large flocs from precipitating or generating oversized granular aggregates, and enable chemical reaction to synchronously and uniformly develop in each part of wastewater. In order to enable the flocculated vanadium flowers to grow slowly, the second type of blades 8 are smaller than the first type of blades 6, the stirring force is moderate, the sludge is mutually collided, and meanwhile, excessive rotation of the sludge can be avoided, and the small vanadium flowers have proper conditions for gradually growing into large vanadium flowers; the third type of blades 9, which are smaller than the second type of blades 8, are arranged above the second outlet, so that the vanadium flowers are in a suspended state and do not immediately precipitate.
It should be noted that, the second pair of baffles 10 is disposed below the third type of paddles 9, and the second pair of baffles 10 includes a short baffle 1001 and a long baffle 1002 that incline downward gradually from the side wall to the center, the long baffle 1002 extends below the short baffle 1001 after being penetrated by the stirring shaft 3, and a gap is left between the long baffle 1002 and the short baffle 1001 to form a second outlet, the second outlet is far away from the side wall where the filtrate outlet 11 is located, and the flocculated suspended vanadium flowers slowly flow downward from the second outlet into the precipitation separation section. As a specific design, the length of the long partition 1002 is 2-4 times that of the short partition 1001, so that the offset angle and position of the second outlet are proper, and the alum blossom slowly enters the precipitation separation section to obtain effective precipitation and orderly discharge.
In the precipitation separation section, the stirring intensity along the water flow direction is smaller and smaller, the precipitation separation time is about 1-3 minutes, the size of the fourth type blade 12 is minimum, the sludge can be prevented from sinking, the larger the flocs are, the more easily broken the flocs are, the certain buffer time is ensured to be reserved to enable vanadium flowers to be precipitated at the bottom of the arc-shaped tank body 4, the separated sludge is orderly discharged along the arrow direction of the bottom wall from the sludge outlet 13, the avoidance space is reserved between the sludge outlet 13 and the fourth type blade 12, and filtrate is directly discharged along the arrow direction from the filtrate outlet 11 on the upper side wall of the section without returning to the front-section circulation treatment.
In this embodiment, the driving mechanism 1 is only required to be installed at the top of the tank body 4 by adopting a motor in the prior art, and the output shaft of the motor is connected with the stirring shaft 3, so that the occupied area of the equipment can be reduced by adopting the structural design, and the stirring shaft 3 can be operated more stably. In addition, a vent valve 16 and a pressure gauge 2 are also arranged on the top wall of the tank body 4, and the pressure in the integrated tank is detected in the use process, so that the safety is ensured.
The optimization of flocculation effect also relies on abundant operation experience, in order to facilitate the operator to adjust the stirring speed according to the state in the tank body 4, as shown in fig. 1, the sludge stock solution inlet 5 and the filtrate outlet 11 are positioned on the same side wall, and the opposite side wall is provided with the observation mirror 14, so that the operator can conveniently adjust the stirring speed according to actual conditions, and the flocculation effect is further optimized in real time.
In conclusion, the sludge mixing, concentrating and discharging integrated tank disclosed by the invention has small occupied area, integrates the functions of mixing, flocculating and separating, shortens the total time required by mixing, reacting and precipitating and separating, and greatly improves the treatment efficiency and the separation effect; the purity of the finally separated supernatant is high, the recycling treatment of the treatment front section is not needed, the solid content of the separated sludge is high, the dehydration operation is not needed, the efficiency of the whole sludge treatment system is improved, the investment is reduced, and the running cost is reduced.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be appreciated by persons skilled in the art that the above embodiments are not intended to limit the invention in any way, and that all technical solutions obtained by means of equivalent substitutions or equivalent transformations fall within the scope of the invention.
Claims (6)
1. The sludge mixing, concentrating and discharging integrated tank is characterized by comprising a tank body, a stirring mechanism arranged in the tank body and a driving mechanism for driving the stirring mechanism; the driving mechanism is a motor, and is arranged at the top of the tank body, an output shaft of the motor is connected with the stirring shaft, and a plurality of supporting legs are arranged at the bottom of the tank body;
the tank body is divided into a mixed coagulation section, a mixed flocculation section and a precipitation separation section from top to bottom by a first pair of partition boards and a second pair of partition boards in sequence, a sludge stock solution inlet is arranged on the side wall of the mixed coagulation section, a flocculant solution inlet is arranged at the sludge stock solution inlet, and a filtrate outlet and a sludge outlet are respectively arranged on the side wall and the bottom wall of the precipitation separation section;
the stirring mechanism comprises: the stirring device comprises a stirring shaft, a first type of blades, a second type of blades, a third type of blades and a fourth type of blades, wherein the stirring shaft penetrates through the tank body, the first type of blades, the second type of blades, the third type of blades and the fourth type of blades are connected with the stirring shaft from top to bottom, the sizes of the first type of blades, the second type of blades, the third type of blades and the fourth type of blades are gradually reduced, the first type of blades, the second type of blades, the third type of blades and the fourth type of blades comprise three arc-shaped blades which are arranged at equal angular intervals, each arc-shaped blade gradually extends upwards from the direction of the side wall of the stirring shaft and has the same inclination angle, and the lengths and the widths of the blades of the first type of blades, the second type of blades, the third type of blades and the fourth type of blades are gradually reduced;
the first type of paddles are positioned in the mixing condensation section, a left baffle plate and a right baffle plate of a first pair of baffle plates are symmetrically arranged below the first type of paddles, the left baffle plate and the right baffle plate incline downwards gradually from the side wall to the center, and a gap is reserved between the left baffle plate and the right baffle plate and between the left baffle plate and the stirring shaft to form a first outlet; the second type of paddles and the third type of paddles are both positioned at the mixing flocculation section, the second pair of baffles are arranged below the third type of paddles, the second pair of baffles comprise short baffles and long baffles which incline downwards gradually from the side wall to the center, the long baffles extend to the lower side of the short baffles after being penetrated by the stirring shaft, gaps are reserved between the long baffles and the short baffles to form a second outlet, and the second outlet is far away from the side wall where the filtrate outlet is positioned; the fourth type paddle is positioned at the precipitation separation section and is close to the bottom wall of the tank body, and the filtrate outlet is positioned at the upper side wall of the precipitation separation section.
2. The integrated tank for sludge mixing, concentrating and discharging as claimed in claim 1, wherein a vent valve and a pressure gauge are further installed on the top wall of the tank body.
3. The integrated tank for sludge mixing, concentrating and discharging as claimed in claim 1, wherein said sludge stock solution inlet and said filtrate outlet are located on the same side wall, and an observation mirror is installed on the opposite side wall.
4. The integrated tank for sludge mixing, concentrating and discharging as claimed in claim 1, wherein an avoidance space is reserved between the sludge outlet and the fourth type of blades.
5. The integrated sludge mixing, concentrating and discharging tank as recited in claim 4, wherein the bottom wall of said tank body is arc-shaped.
6. The integrated tank for sludge mixing, concentrating and discharging as claimed in claim 1, wherein the length of the long partition plate is 2-4 times that of the short partition plate.
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| CN201810818505.7A CN108689584B (en) | 2018-07-24 | 2018-07-24 | Sludge mixing, concentrating and discharging integrated tank |
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| CN201810818505.7A CN108689584B (en) | 2018-07-24 | 2018-07-24 | Sludge mixing, concentrating and discharging integrated tank |
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| CN108689584A CN108689584A (en) | 2018-10-23 |
| CN108689584B true CN108689584B (en) | 2023-11-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110787694B (en) * | 2019-12-07 | 2022-06-24 | 江西省子轩科技有限公司 | Stirring device for ceramic manufacturing process |
| CN111039377A (en) * | 2020-01-09 | 2020-04-21 | 苏州晟德水处理有限公司 | Mixing coagulation device |
| CN112010430B (en) * | 2020-08-03 | 2021-03-23 | 新疆河润水业有限责任公司 | Sludge reduction method and device for urban domestic sewage treatment |
| CN113477119A (en) * | 2021-06-28 | 2021-10-08 | 北京北方天鹰科技有限公司 | Sewage treatment device |
| CN114573177A (en) * | 2022-01-17 | 2022-06-03 | 安尼康（福建）环保设备有限公司 | Concentrated sewage treatment system of high-efficient sediment of double flute formula |
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