Blockage identification and emergency water passing device for downward flow sewage filler system

Abstract

The utility model discloses a downward flow sewage packing system blockage identification emergency water passing device which comprises a sewage packing system, a water inlet pipe is arranged on the upper portion of the sewage packing system, a packing layer is arranged on the inner side of the sewage packing system, a bearing layer is further arranged at the bottom of the inner side of the sewage packing system, and the bearing layer is arranged on the lower portion of the packing layer. A water outlet pipe is arranged at the bottom of the sewage filler system; the device further comprises a cylindrical blockage recognition emergency water passing structure, the blockage recognition emergency water passing structure is arranged in the filler layer, and an emergency water inlet hole, a shallow layer emergency water passing hole and a middle layer emergency water passing hole are formed in the blockage recognition emergency water passing structure. No matter slight or severe blockage occurs, sewage can bypass the seriously-blocked surface filler through the blockage recognition emergency water passing structure, the filtering effect is continuously achieved through the shallow filler and the middle filler, the situation that the whole system is stopped due to blockage of the surface filler is avoided, the structure is simple, and the construction and operation and maintenance cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, and particularly relates to a blockage identification and emergency water passing device for a downward-flowing sewage filling material system. Background Art

[0002] Downward flow sewage filler system is a widely used sewage treatment system. Its working principle is that sewage flows through the filler by gravity, the suspended matter in the sewage is intercepted by the filler, and some soluble pollutants are adsorbed by the filler and metabolized by the biofilm growing on the filler, so as to remove the pollutants in the sewage. This technology is simple, low-cost, and has good treatment effect. It is widely used in various sewage treatment systems.

[0003] However, with the increase of suspended solids accumulated on the filler and the growth of biofilm on the filler surface, the downward flow sewage filler system will inevitably experience increased head loss and even blockage during operation, and the filler needs to be backwashed or updated regularly. Due to the complex development process of filler blockage, the blockage identification process of the downward flow sewage filler system often requires the use of digital means, with a variety of sensors and data platforms, which has high investment and high cost. Operation and maintenance require professional technicians, and the overall cost is high. It has not yet been applied in many small downward flow sewage filler systems, especially in rural areas. At the same time, since many small downward flow sewage filler systems have not yet effectively identified blockages, it has further led to problems such as system blockage and overflow and other problems that cannot be operated normally. The overflowing sewage is directly discharged through the sewage overflow pipe, with basically no pollutant removal effect, which deteriorates the effluent water quality.

[0004] In addition, the sewage overpass pipe has basically no pollutant control effect, and the pollutant control ability is poor during emergency water flow. Therefore, it is urgent to invent a low-cost, easy-to-promote blockage identification and emergency water flow device for the downward flow sewage filler system. Utility Model Content

[0005] The main purpose of the utility model is to provide a blockage identification and emergency water passing device for a downward-flowing sewage filling system, which solves the problem that in the existing downward-flowing sewage filling system, sewage exceeding the pipeline has basically no pollutant control effect and the pollutant control ability is poor during emergency water passing.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a downward flow sewage filling system blockage identification emergency water passing device, including a sewage filling system, the sewage filling system is provided with a water inlet pipe at the top, a filling layer is provided inside the sewage filling system, the filling layer is formed by filling, a supporting layer is also provided at the bottom of the inner side of the sewage filling system, the supporting layer is provided at the bottom of the filling layer, and a water outlet pipe is also provided at the bottom of the sewage filling system;

[0007] It also includes a blockage identification emergency water flow structure, which is cylindrical and arranged in the filler layer. The blockage identification emergency water flow structure is provided with an emergency water inlet hole, a shallow emergency water flow hole and a middle emergency water flow hole. The blockage identification emergency water flow structure is connected in the middle and the upper and lower bottom surfaces are sealed, so that water can only flow through the emergency water inlet hole, the shallow emergency water flow hole and the middle emergency water flow hole.

[0008] Furthermore, the emergency water inlet hole is a double-layer water inlet hole.

[0009] Furthermore, the emergency water hole is arranged on the upper side of the blockage identification emergency water hole structure, the shallow emergency water hole is arranged at the lower part of the emergency water hole, and the middle emergency water hole is located at the lower part of the shallow emergency water hole.

[0010] Furthermore, the apertures of the emergency water inlet hole, the shallow emergency water through hole and the middle emergency water through hole are smaller than the filler particle size.

[0011] Furthermore, an annular baffle is fixedly provided on the outer side of the blockage identification emergency water-passing structure.

[0012] Furthermore, the number of the annular baffles is three.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The utility model sets a blockage identification emergency water-passing structure. No matter whether the blockage is slight or severe, the sewage can bypass the seriously blocked surface filler through the blockage identification emergency water-passing structure, and continue to play the filtering effect by using the shallow and middle fillers. On the one hand, it improves the sewage treatment effect when the filler is blocked, and on the other hand, it makes full use of the filler to avoid the whole system being shut down due to the blockage of the surface filler. In addition, the structure is simple, which reduces the construction and operation and maintenance costs.

[0015] 2. Some fillers still function during emergency water flow, which can improve the pollutant removal effect during emergency water flow;

[0016] 3. The utility model can make full use of the unblocked filler below the surface layer, thereby extending the operation and maintenance period of the filler system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a schematic diagram of the overall structure of a blockage identification and emergency water passing device for a downward-flowing sewage filling system.

[0018] In the figure: 1. Sewage filling system; 2. Water inlet pipe; 3. Water outlet pipe; 4. Filling layer; 5. Supporting layer; 6. Free liquid surface; 7. Blockage identification emergency water flow structure; 8. Emergency water inlet hole; 9. Annular baffle; 10. Shallow emergency water flow hole; 11. Middle layer emergency water flow hole. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1 The utility model discloses an emergency water-passing device for identifying blockage of a downward-flowing sewage filling system, comprising a sewage filling system 1, wherein an inlet pipe 2 is arranged at the upper part of the sewage filling system 1, through which sewage can enter the sewage filling system 1, and a filling layer 4 is arranged in the middle part of the sewage filling system 1, and the filling layer 4 is formed by filling with fillers. Furthermore, a supporting layer 5 is also arranged at the bottom of the inner side of the sewage filling system 1, and the supporting layer 5 is arranged at the lower part of the filling layer 4, and the supporting layer 5 is used to bear the pressure of the filling layer 4. Preferably, an outlet pipe 3 is also arranged at the bottom of the sewage filling system 1, and sewage inside the sewage filling system 1 can be discharged through the outlet pipe 3. When sewage enters the sewage filling system 1 through the inlet pipe 2, it will pass through the filling layer 4 and the supporting layer 5 under the action of gravity, and then flow out of the sewage filling system 1 from the outlet pipe 3. Since there is a certain head loss when sewage flows through the filling layer 4, a free liquid surface 6 will be formed on the surface of the filling layer 4 after long-term operation. During the operation of the entire system, suspended matter and biofilm accumulate in large quantities in the packing layer 4, resulting in a decrease in the porosity of the packing layer 4 and an increase in the head loss. As the liquid level of the free liquid surface 6 rises, the pores of the packing layer 4 are eventually completely blocked, and the sewage cannot flow through the packing layer 4. The liquid level of the free liquid surface 6 continues to rise, and eventually the sewage overflows.

[0021] Furthermore, the device is also provided with a blockage identification emergency water flow structure 7, which is cylindrical and arranged in the packing layer 4. The blockage identification emergency water flow structure 7 is provided with an emergency water inlet hole 8, a shallow emergency water flow hole 10, and a middle emergency water flow hole 11. Preferably, the emergency water inlet hole 8 is a double-layer water inlet hole, which is arranged on the upper side of the blockage identification emergency water flow structure 7. Preferably, the shallow emergency water flow hole 10 is arranged at the lower part of the emergency water inlet hole 8, and the middle emergency water flow hole 11 is located at the lower part of the shallow emergency water flow hole 10. The blockage identification emergency water flow structure 7 is through in the middle and the upper and lower bottom surfaces are sealed. Water can only flow through the emergency water inlet hole 8, the shallow emergency water flow hole 10, and the middle emergency water flow hole 11. The pore size of the emergency water inlet hole 8, the shallow emergency water flow hole 10, and the middle emergency water flow hole 11 is smaller than the filler particle size.

[0022] Furthermore, an annular baffle 9 is fixedly provided on the outer side of the blockage identification emergency water pass structure 7. Preferably, the number of the annular baffles 9 is three. During actual installation, the blockage identification emergency water pass structure 7 is positioned in the pool before filling the filler in the sewage filling system 1, and then the filler is filled. The blockage identification emergency water pass structure 7 is fixed in the sewage filling system 1 through the combined action of the filler layer 4, the outer wall of the blockage identification emergency water pass structure 7 and the annular baffle 9.

[0023] The operation process of the utility model is as follows: when the packing layer 4 is not blocked, the blockage identification emergency water-passing structure 7 does not play a role. When the packing layer 4 is slightly blocked, as the water inlet pipe 2 continues to flow in, the liquid level of the free liquid surface 6 gradually rises until the liquid level of the free liquid surface 6 rises to the position of the lower water inlet hole in the emergency water inlet hole 8. The sewage flows from the emergency water inlet hole 8 into the blockage identification emergency water-passing structure 7, and then quickly passes through the shallow emergency water-passing hole 10 and the middle emergency water-passing hole 1 in the blockage identification emergency water-passing structure 7. 1, and then flows out of the blockage identification emergency water-passing structure 7, bypasses the blocked surface filler in the filler layer 4, and flows into the shallow and middle layers of the filler layer 4 to achieve continued treatment of the sewage. The annular baffle 9 below the shallow emergency water-passing hole 10 and the middle emergency water-passing hole 11 can not only fix the blockage identification emergency water-passing structure 7, but also adjust the flow state of the sewage flowing out of the shallow emergency water-passing hole 10 and the middle emergency water-passing hole 11, so that the sewage continues to pass through the filler, rather than directly short-circuiting through the outer wall of the blockage identification emergency water-passing structure 7. When the filler layer 4 is severely blocked, the sewage cannot be discharged smoothly only through the lower water inlet hole in the emergency water inlet hole 8, and the liquid level of the free liquid surface 6 continues to rise to the upper water inlet hole in the emergency water inlet hole 8, and the water is discharged through the two rows of water inlet holes in the emergency water inlet hole 8. The rest of the process is consistent with the occurrence of mild blockage.

[0024] In general, when the liquid level of the free liquid surface 6 rises to the lower water inlet hole in the emergency water inlet hole 8, it indicates that the packing layer 4 is slightly blocked, and attention should be paid to the blockage of the packing layer 4. When the liquid level of the free liquid surface 6 rises to the upper water inlet hole in the emergency water inlet hole 8, it indicates that the packing layer 4 is severely blocked, and the packing layer 4 should be flushed or renewed. Regardless of whether it is slightly or severely blocked, the sewage can bypass the severely blocked surface packing through the blockage identification emergency water flow structure 7, and continue to play the filtering effect by using the shallow and middle layer packing, which improves the sewage treatment effect when the packing is blocked, and makes full use of the packing to avoid the entire system from being shut down due to the blockage of the surface packing.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A blockage identification and emergency water-passing device for a downward-flowing sewage filling system, characterized in that: It comprises a sewage filling system (1), wherein a water inlet pipe (2) is arranged at the top of the sewage filling system (1), a filling layer (4) is arranged inside the sewage filling system (1), and the filling layer (4) is filled with a filling material, a supporting layer (5) is also arranged at the bottom of the inner side of the sewage filling system (1), and the supporting layer (5) is arranged at the bottom of the filling layer (4), and a water outlet pipe (3) is also arranged at the bottom of the sewage filling system (1); It also comprises a blockage identification emergency water flow structure (7), the blockage identification emergency water flow structure (7) is cylindrical, the blockage identification emergency water flow structure (7) is arranged in the filler layer (4), the blockage identification emergency water flow structure (7) is provided with an emergency water inlet hole (8), a shallow emergency water flow hole (10) and a middle emergency water flow hole (11), the blockage identification emergency water flow structure (7) is through-hole in the middle and the upper and lower bottom surfaces are sealed, and water can only flow through the emergency water inlet hole (8), the shallow emergency water flow hole (10) and the middle emergency water flow hole (11).

2. A downward flow sewage filling system blockage identification and emergency water passing device according to claim 1, characterized in that: The emergency water inlet hole (8) is a double-layer water inlet hole.

3. A downward flow sewage filling system blockage identification and emergency water passing device according to claim 1, characterized in that: The emergency water inlet hole (8) is arranged on the upper side of the blockage identification emergency water passing structure (7), the shallow emergency water passing hole (10) is arranged at the lower part of the emergency water inlet hole (8), and the middle emergency water passing hole (11) is located at the lower part of the shallow emergency water passing hole (10).

4. A downward flow sewage filling system blockage identification and emergency water passing device according to claim 1, characterized in that: The apertures of the emergency water inlet hole (8), the shallow emergency water through hole (10) and the middle emergency water through hole (11) are smaller than the particle size of the filler.

5. The downflow sewage filling system blockage identification and emergency water passing device according to claim 1 is characterized by: An annular baffle (9) is fixedly arranged on the outer side of the blockage identification emergency water-passing structure (7).

6. A downward flow sewage filling system blockage identification and emergency water passing device according to claim 5, characterized in that: The number of the annular baffles (9) is three.

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