CN211712887U - Novel domestic sewage treatment device of internal circulation biological aerated filter - Google Patents

Abstract

The utility model discloses a novel internal circulation aeration biological filter tank domestic sewage treatment device, which relates to the field of domestic sewage treatment. Several layers of filter plates are installed from top to bottom, and a layer of perforated plates is installed in the lower part of the filter area. There is a gap between the perforated plate and the bottom surface of the filter area to form a water distribution space. There are two upwardly inclined baffles installed in the filter area of the filter tank. There is a space between the baffles and the biological filler to form a backwater space, and the backwater space and the water distribution space are connected by a return pump pipeline; It extends into the water distribution space through the biological packing and the perforated plate, and an aeration head is installed at the bottom end of the air pipe. The water treatment process of the device is simple, the construction investment is small, the floor area is small, and the operation cost is low. The treated sewage can meet the sewage discharge standard and has high treatment efficiency.

Description

A new type of domestic sewage treatment device for internal circulation aerated biological filter

technical field

The utility model relates to the field of domestic sewage treatment, in particular to a novel domestic sewage treatment device of an internal circulation aeration biological filter.

Background technique

At present, water environment pollution and water shortage have become the main problems restricting the further sustainable development of my country's national economy, which has attracted great attention from all walks of life.

Using aerated biological filter to filter sewage can save energy and protect the environment while filtering sewage. , convenient operation and management, easy to realize automatic control, wide application and so on. At present, it has been widely used in my country's urban sewage treatment, residential sewage treatment and reuse, industrial wastewater treatment and pretreatment of micro-polluted water source water. It is gradually becoming one of the important technical means in the field of sewage biological treatment in my country. .

Sewage often contains a large amount of impurities. If it is directly discharged into the biological aerated filter for treatment, the filter needs to be backwashed frequently, and the packing needs to be replaced in severe cases; if the sewage is filtered first and then discharged into the biological aerated filter, The process and equipment will be added, which will cause a waste of space. In addition, the sewage treatment effect of the existing biological aerated filter is general, and the effluent quality is difficult to meet the requirements at one time. If multiple biological aerated filters are connected in parallel, it will also cause space waste.

SUMMARY OF THE INVENTION

The purpose of the utility model is to overcome the deficiencies of the above-mentioned technologies, and to provide a new type of domestic sewage treatment device for internal circulation aerated biological filter tank, which has small footprint, good treatment effect and can pre-filter sewage.

In order to achieve the purpose of the above utility model, the technical scheme adopted by the present utility model is: a novel internal circulation aerated biological filter domestic sewage treatment device, including a square shell, characterized in that, a vertical axis perpendicular to the shell passes through the shell. The partition plate arranged at the bottom divides the inner cavity of the shell into a filter area and a filter tank area distributed on the left and right, and the filter area and the bottom of the filter tank area are connected with water; a sewage inlet is opened on a side wall of the top of the filter area, and the filter area from the top There are several layers of filter plates installed from the bottom. The filter plates are folded plate-shaped structures with low middle and high sides, and the filter plates are arranged in a downward inclined shape. There are rows on the shell wall of the filter area corresponding to the lowest end of each filter plate. The slag port, a sealing device that can open/close the slag discharge port is installed on the outer wall of the filter area; a layer of perforated plates is installed at the lower part of the filter tank area, and there is a gap between the perforated plate and the bottom surface of the filter tank area to form a water distribution space. The biological filler is installed on the top surface of the perforated plate, and two baffles inclined upward are installed in the filter area above the biological filler. On the wall, there is a space between the baffle plate and the biological filler to form a backwater space, and the backwater space and the water distribution space are connected through a return pump pipeline; an air pipe is inserted from the outside of the shell into the top edge of the two baffle plates. The bottom of the air pipe is installed with an aeration head, and the top is connected to an aeration fan; the top side of the filter area opposite to the partition plate is provided with an aeration head. There is an overflow tank, and the overflow tank is provided with a clean water outlet.

Further, a backwash water inlet pipe is installed on one side of the shell wall of the backwater space, and a backwash water outlet pipe is installed on one side of the shell wall of the water distribution space for flushing the biological filler.

Further, the filter plate in the filter zone is provided with three layers.

Further, the pore diameters of the filter holes of each layer of filter plates decrease sequentially from top to bottom.

Further, the aeration head is a microporous aeration head.

The beneficial effects of the utility model are as follows: the water treatment process of the device is simple, the construction investment is small, the floor space is small, the operation cost is low, and the technical ability requirements of the maintenance personnel are low; the treated sewage can meet the sewage discharge standard and be treated efficient.

Description of drawings

Figure 1 is a schematic structural diagram of the utility model.

Figure 2 is a schematic diagram of the structure of the filter plate.

In the figure: shell 1, partition 2, filter area 3, filter tank area 4, sewage inlet 5, filter plate 6, slag discharge port 7, sealing device 8, porous plate 9, water distribution space 10, biological filler 11, folding Flow plate 12 , return water space 13 , return pump 14 , air pipe 15 , aeration head 16 , aeration fan 17 , overflow tank 18 , clean water outlet 19 , backwash water inlet pipe 20 , backwash water outlet pipe 21 .

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

Example 1

As shown in Figure 1-2, a new type of domestic sewage treatment device with internal circulation aerated biological filter includes a square shell 1, and the shell 1 is separated from the inside of the shell 1 by a partition 2 arranged perpendicular to the bottom of the shell. The cavity is divided into a filter area 3 and a filter area 4 distributed on the left and right, and the bottom of the filter area 3 and the filter area 4 are connected with water; a sewage inlet 5 is opened on a side wall of the top of the filter area 3, and the filter area 3 is installed from top to bottom. There are several layers of filter plates 6, and the filter plates 6 in the filter zone 3 are provided with three layers, and the pore size of the filter holes of each layer of filter plates 6 decreases sequentially from top to bottom. The filter plates 6 are arranged in a downwardly inclined shape, and a slag discharge port 7 is provided on the shell wall of the filter area 3 corresponding to the lowest end of each filter plate 6, and a sealing device that can open/close the slag discharge port 7 is installed on the outer wall of the filter area 3. 8; a layer of perforated plate 9 is installed at the lower part of the filter tank area 4, and there is a distance between the perforated plate 9 and the bottom surface of the filter tank area 4 to form a water distribution space 10, and a biological filler 11 is installed on the top surface of the perforated plate 9. Two baffles 12 inclined upward are installed in the filter area 4. The two baffles 12 are arranged in a figure-eight shape, and the bottom and both sides are fixed on the partition 2 or the shell wall. There is a space between 11 to form a backwater space 13, and the backwater space 13 and the water distribution space 10 are connected by the backflow pump 14 pipeline; The bottom end of the air pipe 15 is installed with an aeration head 16, and the aeration head 16 is a microporous aeration head 16. The top is connected to the aeration fan 17; the top side of the filter tank area 4 opposite to the partition plate 2 is provided with an overflow groove 18, and the overflow groove 18 is provided with a clean water outlet 19; A backwash water inlet pipe 20 is installed, and a backwash water outlet pipe 21 is installed on one side of the shell wall of the water distribution space 10 for flushing the biological filler 11 .

The described embodiments are only some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Claims (5)

1. a novel internal circulation aerated biological filter domestic sewage treatment device, comprising a square shell, it is characterized in that, in the described shell, the shell cavity is divided into left and right distribution by a partition plate set perpendicular to the bottom of the shell. The filter area and the filter tank area, and the filter area and the bottom of the filter tank area are connected with water; a sewage inlet is opened on one side wall of the top of the filter area, and several layers of filter plates are installed in the filter area from top to bottom, and the filter plates are A folded plate-shaped structure with a low middle and two high sides, and the filter plates are arranged in a downward inclined shape. There are slag discharge ports on the shell wall of the filter area corresponding to the lowest end of each filter plate, and an open/closed discharge port is installed on the outer wall of the filter area. A sealing device for the slag port; a layer of perforated plates is installed at the lower part of the filter area, and there is a gap between the perforated plate and the bottom surface of the filter area to form a water distribution space. There are two baffles inclined upward in the filter tank. The two baffles are arranged in a figure-eight shape. The bottom and both sides are fixed on the partition or the shell wall. There is a gap between the baffles and the biological filler. The backwater space is communicated with the water distribution space through the backflow pump pipeline; an air pipe is inserted into the top edge interval of the two baffle plates from the outside of the shell and then vertically passes through the biological filler and the perforated plate. Extending into the water distribution space, an aeration head is installed at the bottom end of the air pipe, and an aeration fan is connected at the top; an overflow groove is set on the top side of the filter area opposite to the partition plate, and a clean water outlet is opened on the overflow groove. . 2. A novel internal circulation aerated biological filter domestic sewage treatment device according to claim 1, characterized in that, a backwash water inlet pipe is installed on one side shell wall of the backwater space, and a backwash water inlet pipe is installed on one side of the backwater space. A backwash outlet pipe is installed on the side shell wall. 3 . The novel internal circulation aerated biological filter tank domestic sewage treatment device according to claim 1 , wherein the filter plate in the filter zone is provided with three layers. 4 . 4 . The novel internal circulation aerated biological filter domestic sewage treatment device according to claim 1 , wherein the pore diameter of the filter holes of each layer of filter plates decreases sequentially from top to bottom. 5 . 5. A new type of domestic sewage treatment device for a biological aerated filter with internal circulation according to claim 1, wherein the aeration head is a microporous aeration head.

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