CN116102143A - Coagulation sedimentation tank - Google Patents

Abstract

The invention discloses a coagulation sedimentation tank. The coagulation sedimentation tank includes a central water inlet area, a flocculation reaction area, a sedimentation area, a water production area and a mud discharge area. , the sewage enters the tank body from the water inlet pipe, the water inlet pipe is located in the center of the pool body, the dosing pipe and the water inlet pipe are connected to the central cylinder, the flocculation reaction zone is located below the central water inlet mixing zone, and the sedimentation zone is located in the upper part of the tank body. The water flow in the flocculation reaction zone settles in the sedimentation zone, and the water production zone is located above the sedimentation zone. After passing through the sedimentation zone, the water flow rises to the water production zone. The flow plate enters the sump, the sludge discharge area is located below the flocculation reaction area, and the sludge from the sedimentation area falls into the mud hopper, which is connected with a sludge discharge pipe, and the sludge discharge pipe passes out of the tank. The coagulation-sedimentation tank provided by the invention has the advantage of saving floor space by coupling the coagulation-sedimentation process.

Description

Coagulation sedimentation tank

technical field

The invention relates to the technical field of water treatment equipment, in particular to a coagulation sedimentation tank.

Background technique

The coagulation and sedimentation process is the most basic and important process in water treatment. By adding coagulants to the water, the particles that are difficult to settle in the water can aggregate with each other to form colloids, and then combine with impurities in the water to form larger particles. flocs. The floc has a strong adsorption force, not only can absorb suspended solids, but also can absorb some bacteria and dissolved substances. Through adsorption, the flocs increase in volume and sink, and are separated and precipitated from water under certain precipitation conditions. Thereby reducing the turbidity, chromaticity and toxic and harmful pollutants of water. The principle of the coagulation-sedimentation process in the related art is simple and widely used. However, because the coagulation and sedimentation units are set separately, it occupies a large area and is not suitable for projects with tight land resources. The coagulation and sedimentation process needs to be equipped with large-scale electrical equipment to improve the coagulation and sedimentation effect. The process structure is complicated, equipment failure is easy, and the separation of mud and water is not complete.

Contents of the invention

The present invention aims to solve one of the technical problems in the related art at least to a certain extent. For this reason, the embodiment of the present invention proposes a coagulation-sedimentation tank, which has the advantage of being coupled with the coagulation-settling process and saving floor space.

According to the coagulation-sedimentation tank of the embodiment of the present invention, the coagulation-settling tank includes a central water inlet area, a flocculation reaction area, a sedimentation area, a water production area, and a mud discharge area, and the central water inlet area is provided with a water inlet pipe and a dosing pipe and the central cylinder, the sewage enters the pool body from the water inlet pipe, the water inlet pipe is located in the center of the pool body, the dosing pipe and the water inlet pipe are connected with the central cylinder, and the flocculation reaction zone is located Below the central water inlet mixing zone, the settling zone is located on the upper part of the tank body, the water flow from the flocculation reaction zone settles in the settling zone, the water production zone is located above the settling zone, passes through the The water flow after sedimentation in the sedimentation area rises to the water production area, and the water production area is provided with a deflector and a sump, and the water flow from the sedimentation area enters the sump along the deflector, and the drain The mud zone is located below the flocculation reaction zone, and the sludge from the settling zone falls into the mud hopper, and the mud hopper is connected with a sludge discharge pipe, and the sludge discharge pipe passes through the tank body.

The coagulation-sedimentation tank according to the embodiment of the present invention has the advantage of saving floor space by coupling the coagulation-sedimentation process.

In some embodiments, the water inlet pipe and the dosing pipe communicate with the upper part of the central cylinder, and a flow mixing structure is arranged in the central cylinder.

In some embodiments, the flow mixing mechanism is any one of blade structure, spiral structure and porous vortex structure.

In some embodiments, the water-producing area is provided with a slag scraping mechanism, and the scum scraping mechanism includes a scum scraper, a slag retaining plate and a slag discharge hopper, and the scum scraper is driven by a driving motor to push the scum into the slag discharge hopper, and the slag retaining plate extends downward to prevent scum from entering the water collection tank.

In some embodiments, the water production area further includes a deflector, and the water flow in the sedimentation zone enters the sump along the deflector, and the deflector is arranged obliquely on the edge of the pool body, and the water flow The water enters the water collection tank along the direction of the deflector, and there is a certain interval between the deflector and the slag retaining plate.

In some embodiments, the mud discharge area further includes a static pressure mud discharge air duct, the static pressure mud discharge air duct communicates with the mud discharge pipe, and a mud discharge pump is provided at the end of the mud discharge pipe, A valve is provided at one end of the outlet of the static pressure mud discharge air duct.

In some embodiments, the static pressure mud discharge air duct is also provided with a sampling pipe.

In some embodiments, the settling area is provided with a sloping plate and a cleaning piece, a plurality of the sloping plates are arranged in parallel, and the cleaning piece is connected to the sloping plate.

In some embodiments, the air supply pipe of the cleaning element and the air pump, the air supply pipe is located at the end of the inclined plate adjacent to the pool wall, and the air supply pipe communicates with the air pump through the air pipe.

In some embodiments, the flocculation reaction zone is provided with folded plates, and the water flow from the central tube flows from bottom to top along the folded plates, and the folded plates are arranged symmetrically with respect to the central tube.

Description of drawings

Fig. 1 is a schematic plan view of a coagulation sedimentation tank according to an embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view along the direction A of the coagulation-sedimentation tank according to an embodiment of the present invention.

Fig. 3 is a schematic cross-sectional view of the coagulation-sedimentation tank in the direction B according to an embodiment of the present invention.

Reference signs: 1, water inlet pipe; 2, dosing pipe; 3, center tube; 4, deflector; 5, sump; 6, mud bucket; 7, mud discharge pipe; 8, mixed flow structure; 9, scraper Slag plate; 10, slag retaining plate; 11, overflow weir; 12, slag discharge hopper; 13, drive motor; 14, static pressure mud discharge air duct; 15, valve; 16, sampling pipe; 17, inclined plate; 18 , Mud discharge pump; 19, folding plate.

Detailed ways

Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

As shown in Figures 1 to 3, according to the coagulation-settling tank of the embodiment of the present invention, the coagulation-settling tank includes a central water inlet area, a flocculation reaction area, a sedimentation area, a water production area and a mud discharge area, and the central water inlet area is set There are water inlet pipe 1, dosing pipe 2 and central cylinder 3. Sewage enters the pool body from water inlet pipe 1. It is located below the central water inlet mixing area, and the sedimentation area is located in the upper part of the tank body. The water flow from the flocculation reaction area settles in the sedimentation area, and the water production area is located above the sedimentation area. After passing through the sedimentation area, the water flow rises to the water production area, producing The water area is provided with a deflector 4 and a sump 5. The water flow from the sedimentation area enters the sump 5 along the deflector 4. The sludge discharge area is located below the flocculation reaction area, and the sludge from the sedimentation area falls into the mud bucket 6. , The mud bucket 6 is connected with a mud discharge pipe 7, and the mud discharge pipe 7 passes out of the pool body. Coupling the coagulation-sedimentation process in one pool structure to realize two different processes of sewage coagulation and sedimentation solves the shortcomings of the existing coagulation-sedimentation process that occupies a large area, and provides a basis for the establishment of a compact sewage treatment plant for standard upgrading and transformation plan.

The coagulation-sedimentation tank according to the embodiment of the present invention has the advantages of a coupled coagulation-sedimentation process saving floor space, a simple process structure, and good mud-water separation effect.

In some embodiments, as shown in FIG. 2 to FIG. 3 , the water inlet pipe 1 and the dosing pipe 2 communicate with the upper part of the central cylinder 3 , and the central cylinder 3 is provided with a mixed flow structure 8 .

Specifically, the water inlet pipe 1 sends the sewage into the upper part of the central cylinder 3, the dosing pipe 2 sends the coagulant or flocculant into the upper part of the central cylinder 3, and the mixed flow structure 8 fully and evenly diffuses the medicine in the water body, and the sewage water flow It flows from top to bottom to the flocculation reaction zone.

In some embodiments, as shown in FIG. 2 to FIG. 3 , the flow mixing mechanism is any one of blade structure, spiral structure and porous vortex structure.

Specifically, the blade structure may be a plurality of blades fixed on the rotating shaft, the helical structure may be blades spirally extending from top to bottom, and the porous vortex structure may be a vortex impeller with a plurality of holes evenly distributed therein.

In some embodiments, as shown in Figures 1 to 3, a slag scraping mechanism is provided in the water production area, and the slag scraping mechanism includes a slag scraper 9, a slag retainer 10, and a slag discharge hopper 12, and the slag scraper 9 drives the motor Driven by 13, the scum is pushed into the slag discharge hopper 12, and the slag retaining plate 10 extends downward to prevent the scum from entering the sump 5.

Specifically, the scum particles with low density in the water float up to the water surface, and the scum scraping mechanism collects the scum. The slag scraper 9 rotates to push the scum into the slag discharge hopper 12, and the bottom of the slag discharge hopper 12 is connected with a scum discharge pipeline for cleaning the scum. Slag scraper 9 improves the removal rate of suspended solids and oily substances.

In some embodiments, as shown in Fig. 2 to Fig. 3, the water production zone further includes a deflector 4, and the water flow in the sedimentation zone enters the sump 5 along the deflector 4, and the deflector 4 is arranged obliquely on the edge of the pool body, The water flow enters the sump 5 along the direction of the deflector 4 to discharge water, and there is a certain interval between the deflector 4 and the slag retaining plate 10 .

Specifically, the deflector 4 can make the water flow smoothly separate the suspended solids, the deflector 4 is inclined away from the inner wall of the tank, and the water flows into the sump 5 from the gap between the slag retaining plate 10 and the deflector 4 , The edge of the sump 5 is provided with an overflow weir 11 .

In some embodiments, as shown in Figure 2, the mud discharge area also includes a static pressure mud discharge air guide pipe 14, the static pressure mud discharge air guide pipe 14 communicates with the mud discharge pipe 7, and the end of the mud discharge pipe 7 is provided with a mud discharge pipe. The pump 18 is provided with a valve 15 at one end of the outlet of the static pressure mud discharge air duct 14 .

Specifically, static pressure mud discharge can save energy and reduce consumption, and the static pressure mud discharge air duct 14 can be used as a flushing pipe to regularly clean the mud discharge pipe 7 to reduce pipeline sludge. The dual system of static pressure sludge discharge and pump sludge discharge can reduce operating energy consumption and ensure stable sludge discharge. The mud discharge pump 18 can assist in mud discharge or empty the tank body, and the mud discharge pump 18 is arranged at the end of the mud discharge pipe 7 away from the tank body

In some embodiments, as shown in FIGS. 2 and 3 , the static pressure mud discharge air duct 14 is also provided with a sampling pipe 16 .

Specifically, a sampling pipe 16 is set to sample the static pressure sludge discharge air duct 14, and the valve 15 is controlled to open and close the sludge discharge process according to the sludge properties observed by the sampling pipe 16.

In some embodiments, as shown in FIG. 2 and FIG. 3 , the sedimentation area is provided with sloping plates 17 and cleaning parts, a plurality of sloping plates 17 are arranged in parallel, and the cleaning parts are connected to the sloping plates 17 .

Specifically, a plurality of sloping plates 17 parallel to each other are arranged in the sedimentation area, and the distance between the sloping plates 17 can be equal. The turbulence promotes the precipitation reaction. The inclined plate 17 increases the processing load, and the sedimentation effect in the sedimentation zone is good. The inclined plate 17 can be replaced by an inclined tube. After the inclined plate 17 has been used for a period of time, it is easy to adhere to sludge, thereby affecting the sedimentation effect. Using cleaning parts to clean the sludge on the surface of the inclined plate 17 can ensure the sedimentation effect in the sedimentation area.

In some embodiments, as shown in FIG. 2 and FIG. 3 , the cleaning element includes an air supply pipe and an air pump, the air supply pipe is located at one end of the inclined plate 17 adjacent to the pool wall, and the air supply pipe communicates with the air pump through the air pipe.

Specifically, an air delivery pipe is provided behind the inclined plate 17, and a plurality of air holes are arranged on the air delivery pipe corresponding to the gaps between the inclined plates 17. The air delivery pipe communicates with the air pump outside the sedimentation tank through the air pipe, and when the air pump is turned on, the high-pressure air flow enters the air delivery pipe through the air pipe. The air pipe washes the sludge on the surface of the inclined plate 17 through the air holes. The air pump can also be replaced by a fan or an air compressor. The air pump has low energy consumption, a small footprint, simple operation and maintenance, and low noise. The air pump can be started manually or automatically at regular intervals Clean the sludge of inclined plate 17.

In some embodiments, as shown in FIG. 2 and FIG. 3 , the flocculation reaction zone is provided with folded plates 19 , and the water flow from the central tube 3 flows from bottom to top along the folded plates 19 , and the folded plates 19 are arranged symmetrically with respect to the central tube 3 .

Specifically, the folded plate 19 can be replaced by a grid, a partition, etc. The folded plate 19 makes the micro-floc particles contact and collide with each other to form a larger floc. Increase the hydraulic time and strengthen the coagulation and flocculation effect.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship indicated by "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device or element Must be in a particular orientation, be constructed in a particular orientation, and operate in a particular orientation, and therefore should not be construed as limiting the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; can be mechanically connected, can also be electrically connected or can communicate with each other; can be directly connected, can also be indirectly connected through an intermediary, can be the internal communication of two components or the interaction relationship between two components, Unless expressly defined otherwise. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In the present invention, unless otherwise clearly specified and limited, the first feature may be in direct contact with the first feature or the first and second feature may be in direct contact with the second feature through an intermediary. touch. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

As used herein, the terms "one embodiment," "some embodiments," "example," "specific examples," or "some examples" mean specific features, structures, materials, or features described in connection with the embodiment or example. A feature is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limitations on the present invention. Those skilled in the art can make changes, modifications, and changes to the above embodiments. Alternatives and modifications are within the protection scope of the present invention.

Claims (10)

1. A coagulating sedimentation tank, characterized by comprising:

the central water inlet area is provided with a water inlet pipe, a dosing pipe and a central cylinder, sewage enters the tank body from the water inlet pipe, the water inlet pipe is positioned in the center of the tank body, and the dosing pipe and the water inlet pipe are communicated with the central cylinder;

a flocculation reaction zone located below the central water inlet mixing zone;

the sedimentation zone is positioned at the upper part of the tank body, and water flow from the flocculation reaction zone is sedimented in the sedimentation zone;

the water producing area is positioned above the sedimentation area, water flow precipitated by the sedimentation area rises to the water producing area, the water producing area is provided with a water collecting tank, and water flow from the sedimentation area enters the water collecting tank;

the mud discharging area is positioned below the flocculation reaction area, the mud from the sedimentation area falls into the mud bucket, the mud bucket is connected with a mud discharging pipe, and the mud discharging pipe penetrates out of the tank body.

2. The coagulating sedimentation tank of claim 1, wherein the water inlet pipe and the dosing pipe are in communication with the upper portion of the central cylinder, and a mixed flow structure is provided in the central cylinder.

3. The coagulation sedimentation tank of claim 2, wherein the flow mixing mechanism is any one of a vane structure, a spiral structure, and a porous vortex structure.

4. The coagulating sedimentation tank of claim 1, wherein the water producing region is provided with a slag scraping mechanism, the slag scraping mechanism comprises a slag scraping plate, a slag blocking plate and a slag discharging bucket, the slag scraping plate pushes the slag into the slag discharging bucket under the drive of a driving motor, and the slag blocking plate extends downwards to block the slag from entering the water collecting tank.

5. The coagulating sedimentation tank of claim 4, further comprising a baffle, wherein the water flow in the sedimentation zone enters the water collection tank along the baffle, the baffle is obliquely arranged at the edge of the tank body, the water flow enters the water collection tank along the direction of the baffle to be discharged, and a certain interval exists between the baffle and the slag baffle.

6. The coagulating sedimentation tank of claim 1, wherein the sludge discharge zone further comprises a static pressure sludge discharge air duct, the static pressure sludge discharge air duct is communicated with the sludge discharge pipe, the tail end of the sludge discharge pipe is provided with a sludge discharge pump, and one end of the outlet of the static pressure sludge discharge air duct is provided with a valve.

7. The coagulating sedimentation tank of claim 6, wherein the static pressure sludge discharge airway is further provided with a sampling tube.

8. The coagulation sedimentation tank as claimed in claim 1, wherein the sedimentation zone is provided with inclined plates and cleaning members, a plurality of the inclined plates being arranged in parallel, the cleaning members being connected to the inclined plates.

9. The coagulation sedimentation tank of claim 1, wherein the cleaning member comprises an air feed pipe and an air pump, the air feed pipe being located at an end of the inclined plate adjacent to the tank wall, the air feed pipe being in communication with the air pump through an air pipe.

10. The coagulation sedimentation tank as claimed in claim 1, wherein the flocculation reaction zone is provided with flaps along which the water flow from the central cylinder flows from bottom to top, the flaps being symmetrically arranged with respect to the central cylinder.

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