Sewage treatment device

Abstract

The invention belongs to the technical field of sewage treatment, and particularly relates to a sewage treatment device. Comprising a coagulation tank and a flocculation tank which are connected, and further comprises a stirrer, the stirrer is at least arranged in the coagulation tank or the flocculation tank; the stirrer comprises a stirring shaft, a helical ribbon and a turbine structure, and the helical ribbon and the turbine structure are sequentially arranged on the stirring shaft from top to bottom. Through cooperation of the helical ribbon and the turbine structure, the reaction efficiency of sewage and a coagulant and / or a flocculating agent is improved, the reaction and / or coagulation time is shortened, and the sewage treatment efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a sewage treatment device. Background Art

[0002] In sewage treatment, coagulation is a widely used and low-cost chemical treatment method with a history of 100 years. It is often used in pretreatment, auxiliary secondary treatment or deep treatment. 3+ / Fe 3+ Salts, sodium hydroxide or polymers, etc.) combine with groups in sewage to form insoluble complexes.

[0003] The flocculation process uses flocculants to aggregate and enlarge the insoluble complexes to form flocs, which accelerates the sedimentation and uses precipitation to achieve solid-liquid separation.

[0004] However, the coagulation and flocculation processes take a long time and the sewage treatment efficiency is low.

[0005] In view of this, the present invention is proposed. Summary of the invention

[0006] The long coagulation time is because the reaction process between the coagulant and sewage is too long, that is, the mixing time is too long. Therefore, in order to improve the sewage treatment efficiency, the reaction efficiency between the coagulant and sewage is improved, which can improve the sewage treatment efficiency.

[0007] In order to solve the technical problems existing in the prior art, the present invention provides a coagulation device. The present invention improves the reaction efficiency between sewage and coagulant and / or flocculant through the coordination of a spiral belt and a turbine structure, shortens the reaction and / or flocculation time, and improves the sewage treatment efficiency.

[0008] The present invention includes the following technical solutions:

[0009] The present invention provides a sewage treatment device, comprising a coagulation tank and a flocculation tank connected, characterized in that the agitator is at least arranged in the coagulation tank or the flocculation tank;

[0010] The stirrer comprises a stirring shaft, a spiral belt and a turbine structure, and the spiral belt and the turbine structure are arranged on the stirring shaft in sequence from top to bottom.

[0011] Furthermore, the spiral ribbons are provided in plurality; preferably, the plurality of spiral ribbons are evenly arranged around the stirring shaft.

[0012] Furthermore, the turbine structure is in a circular ring shape; preferably, the circular ring-shaped turbine structure is connected to the stirring shaft via a spiral belt.

[0013] Furthermore, a stirring bar is arranged in the middle of the circular ring, and the stirring bar is connected to the end of the stirring shaft.

[0014] Furthermore, the agitator is arranged at the upper part of the flocculation tank, and an inclined plate is arranged at the lower part.

[0015] Furthermore, the upper end of the coagulation tank is connected to a sewage inlet pipe, and a coagulant dosing pipe is arranged on the sewage inlet pipe.

[0016] Furthermore, the coagulant dosing pipe is provided with a plurality of coagulant dosing outlets, and the plurality of coagulant outlets are all connected to the sewage inlet pipe.

[0017] Furthermore, the lower end of the coagulation tank is connected to one end of a liquid transfer pipe, and the other end of the liquid transfer pipe is connected to the upper end of the flocculation tank; and a liquid transfer pump is provided on the liquid transfer pipe.

[0018] Furthermore, a flocculant dosing tube is provided on the liquid transfer tube.

[0019] Furthermore, the flocculant dosing pipe is provided with a plurality of flocculant dosing outlets, and the plurality of flocculant dosing outlets are all connected to the liquid transfer pipe.

[0020] The present invention adopts the above technical solution and has the following advantages:

[0021] 1. The present invention improves the reaction efficiency between sewage and coagulant and / or flocculant through the combination of spiral ribbon and turbine structure, shortens the reaction and / or flocculation time, and improves the sewage treatment efficiency.

[0022] 2. The agitator of the present invention can mix sewage and coagulant quickly and evenly, which not only improves the reaction speed of sewage and coagulant, but also enables the coagulant to react with the radicals in sewage more thoroughly, thereby improving the sewage treatment effect.

[0023] 3. The flocculation tank of the present invention is provided with an agitator and an inclined plate, so that the insoluble complex produced by the reaction of sewage and coagulant can be flocculated and settled more efficiently, thereby improving the efficiency and effect of sewage treatment.

[0024] 4. The coagulant and flocculant of the present invention are evenly added through pipelines and mixed with sewage to a certain extent before entering the coagulation tank or flocculation tank, which has the advantage of improving sewage treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 This is a schematic structural diagram of a sewage treatment device according to an embodiment of the present invention;

[0027] Figure 2 Schematic diagram of the structure of the stirring shaft in the embodiment of the present invention;

[0028] In the attached drawings: 10-coagulation tank, 20-flocculation tank, 30-agitator, 31-agitation shaft, 32-screw belt, 33-turbine structure, 331-agitation bar, 40-sewage inlet pipe, 50-coagulant dosing pipe, 60-liquid transfer pipe, 70-liquid transfer pump, 80-flocculant dosing pipe, 90-float level gauge. DETAILED DESCRIPTION

[0029] The following description provides many different embodiments or examples for implementing different features of the present invention. The components and arrangements described in the following specific examples are only used to simplify the present invention and are only used as examples, not to limit the present invention.

[0030] In the description of the present invention, it should be understood that, in the description of the present invention, "plurality" means multiple or more than one, unless otherwise clearly and specifically defined.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] This embodiment provides a sewage treatment device, such as Figure 1 As shown, it includes a coagulation tank 10 and a flocculation tank 20 connected, and also includes an agitator 30; the agitator 30 is at least arranged in the coagulation tank 10 or the flocculation tank 20;

[0034] The stirrer 30 includes a stirring shaft 31 , a screw belt 32 and a turbine structure 33 . The screw belt 32 and the turbine structure 33 are sequentially arranged on the stirring shaft 31 from top to bottom.

[0035] The agitator 30 may be arranged in the following ways: (1) only in the coagulation tank 10; (2) only in the flocculation tank 20; (3) the agitator 30 may be arranged in both the flocculation tank 20 and the coagulation tank 10.

[0036] When both the flocculation tank 20 and the coagulation tank 10 are provided with the agitator 30, the sewage treatment effect and efficiency can be improved.

[0037] The screw belt 32 is arranged above the turbine structure 33. The screw belt 32 forms an outward stirring effect when stirring. The sewage in the screw belt 32 has a sinking effect. Therefore, the turbine structure 33 stirs the screw belt 32 below to form a turbulent radial flow, thereby improving the stirring effect and playing a role in improving the sewage treatment effect and efficiency.

[0038] Furthermore, if Figure 2 As shown, the spiral ribbon 32 is provided in plurality; preferably, the plurality of spiral ribbons 32 are evenly arranged around the stirring shaft 31. The plurality of evenly arranged spiral ribbons 32 make the coagulant / flocculant and the sewage mix more evenly during stirring, thereby improving the sewage treatment effect and efficiency.

[0039] Furthermore, if Figure 2 As shown, the turbine structure 33 is annular; the annular turbine structure 33 has a better stirring effect. Preferably, the annular turbine structure 33 is connected to the stirring shaft 31 through a spiral belt 32.

[0040] Furthermore, if Figure 2 As shown, a stirring bar 331 is arranged in the middle of the ring, and the stirring bar 331 is connected to the end of the stirring shaft 31. The stirring bar 331 can not only play a stirring role, through which the sinking sewage is stirred better and mixed more evenly, but also play a role in connecting the turbine structure 33 with the stirring shaft 31, making the turbine structure 33 more stable and prolonging its service life.

[0041] Furthermore, if Figure 1 As shown, the stirrer 30 is arranged on the upper part of the flocculation tank 20, and an inclined plate is arranged on the lower part. The cooperation between the stirrer 30 and the inclined plate improves the efficiency of flocculation and sedimentation, and makes the efficiency and effect of sewage treatment better.

[0042] Furthermore, a sewage inlet pipe 40 is connected to the upper end of the coagulation tank 10 , and a coagulant dosing pipe 50 is arranged on the sewage inlet pipe 40 .

[0043] Furthermore, the coagulant dosing pipe 50 is provided with a plurality of coagulant dosing outlets, and the plurality of coagulant outlets are all connected to the sewage inlet pipe 40. The coagulant is added through the plurality of coagulant outlets, so that the coagulant and the sewage are mixed more evenly. Preferably, the plurality of coagulant outlets are arranged on the sewage inlet pipe 40 at intervals along the sewage flow direction, so that the coagulant and the sewage are mixed more evenly, thereby improving the sewage treatment effect.

[0044] Furthermore, the lower end of the coagulation tank 10 is connected to one end of a liquid transfer pipe 60 , and the other end of the liquid transfer pipe 60 is connected to the upper end of the flocculation tank 20 ; and a liquid transfer pump 70 is provided on the liquid transfer pipe 60 .

[0045] Furthermore, a flocculant dosing pipe 80 is provided on the liquid transfer pipe 60 .

[0046] Furthermore, the flocculant dosing pipe 80 is provided with a plurality of flocculant dosing outlets, and the plurality of flocculant dosing outlets are all connected to the liquid transfer pipe 60. Preferably, the plurality of flocculant outlets are arranged on the sewage inlet pipe 40 at intervals along the sewage flow direction, so that the flocculant and sewage are mixed more evenly, thereby improving the sewage treatment effect.

[0047] Furthermore, a drain pipe and a sewage pipe are also provided on the flocculation tank 20 .

[0048] In order to realize the automatic control of the device of the present invention and save labor costs, further, electromagnetic valves are arranged on the sewage inlet pipe 40, the liquid transfer pipe 60, the coagulant dosing pipe 50, the flocculant dosing pipe 80, the drain pipe and the sewage pipe, and a float liquid level gauge 90 is arranged in the coagulation tank 10 and the flocculation tank 20.

[0049] The float level gauge 90 and the solenoid valve are both connected to a controller, and the controller controls the opening and closing of the solenoid valve according to the detection structure of the float level gauge 90 .

[0050] Furthermore, manholes are provided in both the coagulation tank 10 and the flocculation tank 20. The addition of manholes facilitates the stage maintenance of the coagulation tank 10 and the flocculation tank 20, as well as the cleaning of sludge impurities.

[0051] Furthermore, if Figure 2 As shown, stirring structures are provided at opposite ends of the turbine structure 33; and / or a stirring structure is provided on the stirring shaft 31 at the upper end of the spiral belt 32; based on this, the stirring effect is improved.

[0052] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sewage treatment device, comprising a coagulation tank (10) and a flocculation tank (20) connected, characterized in that: It also includes an agitator (30); the agitator (30) is at least arranged in the coagulation tank (10) or the flocculation tank (20); The stirrer (30) comprises a stirring shaft (31), a spiral ribbon (32) and a turbine structure (33), wherein the spiral ribbon (32) and the turbine structure (33) are arranged on the stirring shaft (31) in sequence from top to bottom.

2. A sewage treatment device as claimed in claim 1, characterized in that: The spiral ribbons (32) are provided in plurality; preferably, the plurality of spiral ribbons (32) are evenly arranged around the stirring shaft (31).

3. A sewage treatment device as claimed in claim 1 or 2, characterized in that: The turbine structure (33) is in the shape of a ring; preferably, the ring-shaped turbine structure (33) is connected to the stirring shaft (31) via a spiral belt (32).

4. A sewage treatment device as claimed in claim 3, characterized in that: A stirring bar (331) is arranged in the middle of the circular ring, and the stirring bar (331) is connected to the end of the stirring shaft (31).

5. A sewage treatment device as claimed in claim 1, characterized in that: The agitator (30) is arranged at the upper part of the flocculation tank (20), and an inclined plate is arranged at the lower part.

6. A sewage treatment device as claimed in claim 1, characterized in that: The upper end of the coagulation tank (10) is connected to a sewage inlet pipe (40), and a coagulant dosing pipe (50) is arranged on the sewage inlet pipe (40).

7. A sewage treatment device as claimed in claim 6, characterized in that: The coagulant dosing pipe (50) is provided with a plurality of coagulant dosing outlets, and the plurality of coagulant outlets are all connected to the sewage inlet pipe (40).

8. A sewage treatment device as claimed in claim 1 or 6, characterized in that: The lower end of the coagulation tank (10) is connected to one end of a liquid transfer pipe (60), and the other end of the liquid transfer pipe (60) is connected to the upper end of the flocculation tank (20); a liquid transfer pump (70) is provided on the liquid transfer pipe (60).

9. A sewage treatment device as claimed in claim 8, characterized in that: The liquid transfer tube (60) is provided with a flocculant dosing tube (80).

10. A sewage treatment device as claimed in claim 9, characterized in that: The flocculant dosing pipe (80) is provided with a plurality of flocculant dosing outlets, and the plurality of flocculant dosing outlets are all connected to the liquid transfer pipe (60).

Images