Domestic sewage treatment equipment

Abstract

The utility model discloses domestic sewage treatment equipment in the field of sewage treatment equipment, which comprises a box body, a filter tank, a biochemical tank and a purification tank which are sequentially connected are arranged in the box body, a water inlet communicated with the filter tank is arranged on one side of the box body, a water outlet communicated with the purification tank is arranged on the other side of the box body, and a grid which is obliquely inserted is arranged in the filter tank. The front end of the grid inclines downwards and is arranged below the water outlet, the front end of the grid is also provided with a flitch plate which is upwards clung to the inner wall of the box body, a plurality of biological fillers soaked in the biochemical pool are suspended in the biochemical pool, iron beads are also suspended at the tail ends of the biological fillers, and biochemical filter cotton which is clung to the bottom and fixed on the inner wall is arranged on one side, far away from the biochemical pool, of the purification pool. The filter tank, the biochemical tank and the purification tank which are sequentially connected are adopted to treat domestic sewage step by step, so that the sewage treatment effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment equipment, in particular to domestic sewage treatment equipment. Background Art

[0002] Domestic sewage is wastewater discharged from residents' daily lives, mainly from residential buildings and public buildings, such as residences, government offices, schools, hospitals, shops, public places and toilets of industrial enterprises. The pollutants contained in domestic sewage are mainly organic matter (such as protein, carbohydrates, fat, urea, ammonia nitrogen, etc.) and a large number of pathogenic microorganisms (such as parasite eggs and enteric infectious viruses, etc.). The organic matter in domestic sewage is extremely unstable and easily decomposes to produce a foul odor. Bacteria and pathogens multiply in large numbers with organic matter in domestic sewage as nutrition, which can lead to the spread of infectious diseases. Therefore, domestic sewage must be treated before discharge.

[0003] However, when current sewage treatment equipment receives a large amount of sewage with impurities, due to the limited filtering space, it is easy for the internal part to be blocked by impurities; the biological fillers hanging in the biochemical pool are easy to be entangled and cannot be separated; the purification pool is simply discharged after sedimentation, and the effect of purifying water quality is poor. Due to the existing problems, the overall sewage treatment effect is affected. Utility Model Content

[0004] In order to overcome the deficiencies of the existing technical solutions, the utility model provides a domestic sewage treatment device, which can effectively solve the technical problem of poor treatment effect of the current domestic sewage treatment equipment.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A domestic sewage treatment device comprises a casing, wherein a filter tank, a biochemical tank and a purification tank connected in sequence are arranged in the casing, a water inlet communicated with the filter tank is arranged on one side of the casing, and a water outlet communicated with the purification tank is arranged on the other side, a grille inserted obliquely is arranged in the filter tank, a front end of the grille is inclined downward and arranged below the water outlet, a plate which is closely attached to the inner wall of the casing upward is also arranged at the front end of the grille, a plurality of biological fillers immersed in the tank are hung in the biochemical tank, iron beads are also hung at the end of the biological fillers, and a biochemical filter cotton fixed closely to the bottom and the inner wall is arranged on the side of the purification tank away from the biochemical tank.

[0007] Furthermore, the top of the box is provided with three covers for separately opening the filtration pool, the biochemical pool and the purification pool.

[0008] Furthermore, a first conducting pipe is provided between the filtering pool and the biochemical pool, and a second conducting pipe is provided between the biochemical pool and the purification pool.

[0009] Furthermore, the inner wall of the filter tank is provided with a slot for inserting the grille.

[0010] Furthermore, at least one cross bar for hanging biological fillers is provided in the biochemical pool, and a limiting groove is provided at the cross bar where the biological fillers are hung.

[0011] Furthermore, an aerator is provided at the bottom of the biochemical pool.

[0012] Furthermore, a downwardly sunken sedimentation portion is provided at the bottom of the purification tank, a sewage pipe communicating with the outside of the box is provided at the bottom of the sedimentation portion, and a control valve is provided at one end of the sewage pipe extending outside the box.

[0013] Furthermore, a U-shaped tube is provided in the purification pool, the biochemical filter cotton is clamped in the U-shaped tube, and the U-shaped tube is also provided with a wire mesh attached to both sides of the biochemical filter cotton.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model adopts a filter pool, a biochemical pool and a purification pool connected in sequence to gradually treat domestic sewage, thereby improving the effect of sewage treatment. At the same time, a removable grille is used in the filter pool to quickly clean impurities on the surface of the grille, and iron beads are added to the bottom of the biological filler suspended in the biochemical pool to enhance the gravity effect, which effectively prevents the suspended biological filler from being entangled in the water flow. Biochemical filter cotton is added in the purification pool to further enhance the filtering effect, thereby ensuring that the discharged water is cleaner. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall internal structure of an embodiment of the utility model;

[0017] Figure 2 For the utility model embodiment Figure 1 A schematic diagram of the structure enlargement of part A;

[0018] Figure 3 This is a schematic diagram of the crossbar structure of an embodiment of the utility model;

[0019] Numbers in the figure:

[0020] 1-box, 2-filter tank, 3-biochemical tank, 4-purification tank, 5-water inlet, 6-water outlet, 7-grid, 8-plate, 9-biological filler, 10-iron beads, 11-biochemical filter cotton, 12-cover, 13-first through pipe, 14-second through pipe, 15-slot, 16-cross bar, 17-limiting groove, 18-aerator, 19-sedimentation part, 20-drain pipe, 21-control valve, 22-U-shaped pipe, 23-wire mesh, 24-cleaning discharge pipe. DETAILED DESCRIPTION

[0021] 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.

[0022] like Figure 1-3 As shown, the utility model provides a domestic sewage treatment equipment, including a box body 1, in which a filter pool 2, a biochemical pool 3 and a purification pool 4 connected in sequence are arranged in the box body 1, a water inlet 5 connected to the filter pool 2 is arranged on one side of the box body 1, and a water outlet 6 connected to the purification pool 4 is arranged on the other side. The whole sewage treatment equipment is mainly composed of three pools, and each pool has a unique function to gradually treat domestic sewage until the purified and filtered water can be safely discharged. Domestic sewage flows in from the water inlet 5, passes through the filter pool 2, the biochemical pool 3 and the purification pool 4 in sequence, and is finally discharged from the water outlet 6. The two adjacent pools are connected inside, and a first through pipe 13 connecting the filter pool 2 and the biochemical pool 3, and a second through pipe 14 connecting the biochemical pool 3 and the purification pool 4 are arranged inside. In this technical solution, the heights of the water inlet 5 and the water outlet 6 are equal, and the heights of the first through pipe 13 and the second through pipe 14 are arranged below the water inlet 5 and the water outlet 6 to prevent sewage from flowing back.

[0023] The top of the box body 1 is provided with three covers 12 for separately opening the filtration pool 2, the biochemical pool 3 and the purification pool 4. Under normal circumstances, the entire box body 1 is in a completely sealed state during operation. In particular, the biochemical pool 3 must be kept away from light and prevent ultraviolet radiation during operation. Therefore, the three covers arranged on the top of the box body 1 lead to the corresponding pools respectively after being opened. In other words, the three covers 12 are not related to each other and can be opened separately.

[0024] The filter tank 2 is provided with an inclined inserted grille 7, the front end of which is inclined downward and arranged below the water outlet 6, and the front end of the grille 7 is also provided with a plate 8 which is tightly attached to the inner wall of the box body 1 upward. The grille 7 in the filter tank 2 is mainly used to filter the sewage and debris flowing in. In order to maximize the filtering area and prevent the debris from floating in the water, the grille 7 is placed in a structure with a downward inclined front end, and a detachable structure is formed on the inner wall of the filter tank 2. The grille 7 is taken out in the direction of the detachable structure to clean the sewage and debris covering the surface. At the position where the grille 7 is fixed, slots 15 are provided on both sides of the inner wall of the filter tank 2 for sliding and clamping the fixed grille 7. During filtering, the raised plate 8 at the front end of the grille 7 prevents the debris from falling into the filter tank 2 when the grille 7 is taken out. After the filter tank 2 has been filtered for a certain period of time, the water inlet 5 is closed, and the user can directly take out the grille 7 to clean the sewage and debris on the surface.

[0025] There are multiple biological fillers 9 immersed in the biochemical pool 3 suspended in the pool, and iron beads 10 are also suspended at the end of the biological fillers 9. The biological filler 9 is an aerobic biological carrier, mainly composed of ethylene-propylene copolymer material. The biological filler 9 is generally a hollow structure suspended in water. During normal operation, anaerobic bacteria grow inside the filler to produce denitrification, while aerobic bacteria grow outside to remove organic matter. Nitrification and denitrification processes exist simultaneously in the entire treatment process. There are multiple biological fillers in the biochemical pool 3, and multiple cross bars 16 for hanging the biological fillers 9 are set at the opening in the pool, and anti-displacement limiting grooves 17 are set on the cross bars 16 to better fix the suspended biological fillers 9. At the same time, in order to prevent the biological fillers 9 from being entangled in the water, iron beads 10 are added to the bottom of each biological filler 9 to enhance the gravity effect, and an aerator 18 controlled by a corresponding cylinder is added to the bottom of the biochemical pool.

[0026] The purification pool 4 is provided with a biochemical filter cotton 11 fixed close to the bottom and the inner wall on one side away from the biochemical pool 3. In the purification pool 3, the biochemical filter cotton 11 divides the purification pool 4 into two parts in the purification pool 4. One part is connected with the biochemical pool for purification, and the other part filters the purified water again and then discharges it. Therefore, a sedimentation part 19 for collecting and purifying impurities such as sludge is provided at the bottom of the purification part at the front end of the biochemical filter cotton 11. The sedimentation part 19 is concave downward, and a sewage pipe 20 for discharging sludge and other debris and a control valve 21 for controlling the discharge are provided at the concave position. The sewage pipe 20 is used for discharging sludge and other debris. In addition, in order to prevent the biochemical filter cotton 11 from softening after soaking and affecting the filtering effect, a U-shaped tube 22 is used to clamp and fix the biochemical filter cotton 11 on the inner wall of the purification pool 4, and a wire mesh attached to the surface of the biochemical filter cotton 11 is installed on both sides of the U-shaped tube.

[0027] At the same time, a conducting cleaning discharge pipe 24 is provided at the bottom of the filter pool 2 and the biochemical pool 3, which is mainly used for cleaning the inside of the filter pool 2 and the biochemical pool 3. A plurality of control valves 21 for controlling the corresponding pools are also provided on the cleaning discharge pipe 24. Since there is silt in the purification pool 4, the sewage pipe 20 at the bottom thereof is directly used to drain water when cleaning the purification pool 4 to avoid clogging other pools.

[0028] Compared with the traditional technology, the technical scheme adopts the filter pool 2, the biochemical pool 3 and the purification pool 4 connected in sequence to gradually treat the domestic sewage, thereby improving the effect of sewage treatment. At the same time, the use of the removable grille 7 in the filter pool 2 can quickly clean the impurities on the surface of the grille, and iron beads 10 are added to the bottom of the biological filler 9 suspended in the biochemical pool 3 to enhance the gravity effect, which effectively prevents the suspended biological filler 9 from getting entangled in the water flow, and the addition of biochemical filter cotton 11 in the purification pool 4 further enhances the filtering effect to ensure that the discharged water is cleaner.

[0029] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. A domestic sewage treatment device, comprising a housing, characterized in that: A filter pool, a biochemical pool and a purification pool connected in sequence are arranged in the box body. A water inlet communicated with the filter pool is arranged on one side of the box body, and a water outlet communicated with the purification pool is arranged on the other side. An inclined inserted grille is arranged in the filter pool, and the front end of the grille is inclined downward and arranged below the water outlet. A plate that is tightly attached to the inner wall of the box body is also arranged at the front end of the grille. A plurality of biological fillers immersed in the pool are hung in the biochemical pool, and iron beads are also hung at the end of the biological fillers. A biochemical filter cotton fixed tightly to the bottom and the inner wall is arranged on the side of the purification pool away from the biochemical pool.

2. A domestic sewage treatment equipment according to claim 1, characterized in that: The top of the box is provided with three covers for opening the filtering pool, the biochemical pool and the purification pool separately.

3. A domestic sewage treatment equipment according to claim 1, characterized in that: A first conducting pipe is provided between the filtering pool and the biochemical pool, and a second conducting pipe is provided between the biochemical pool and the purification pool.

4. A domestic sewage treatment equipment according to any one of claims 1 to 3, characterized in that: The inner wall of the filter tank is provided with a slot for inserting the grille.

5. A domestic sewage treatment equipment according to claim 1, characterized in that: At least one cross bar for hanging biological fillers is arranged in the biochemical pool, and a limiting groove is arranged at the position where the cross bar hangs the biological fillers.

6. A domestic sewage treatment equipment according to claim 1 or 2 or 3 or 5, characterized in that: An aerator is arranged at the bottom of the biochemical pool.

7. A domestic sewage treatment equipment according to claim 1, characterized in that: A downwardly sunken sedimentation portion is provided at the bottom of the purification pool, a sewage pipe communicating with the outside of the box is provided at the bottom of the sedimentation portion, and a control valve is provided at one end of the sewage pipe extending outside the box.

8. A domestic sewage treatment equipment according to claim 1 or 2 or 3 or 7, characterized in that: A U-shaped tube is arranged in the purification pool, the biochemical filter cotton is clamped in the U-shaped tube, and the U-shaped tube is also provided with a silk screen attached to both sides of the biochemical filter cotton.

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