CN211255600U - A municipal wastewater treatment equipment - Google Patents

Abstract

The utility model discloses a municipal wastewater treatment equipment, which comprises a grit chamber, a magnetic coagulation separation device and a sludge concentration tank. Fixed on the support plate, the top of the grit chamber is provided with a sewage inlet, a primary filter screen is installed in the sewage inlet, a water pump is installed in the lower right of the grit chamber, and the primary side is connected to the right side of the grit chamber Sedimentation tank, a biological reaction tank is connected to the right side of the primary sedimentation tank, a dosing machine and a motor are installed above the biological reaction tank, the motor is rotatably connected to a rotating shaft, and a stirring blade is fixed on the rotating shaft. The utility model is a municipal wastewater treatment equipment by concentrating, dehydrating and drying the sludge filtered and precipitated in the wastewater. be reused.

Description

A municipal wastewater treatment equipment

technical field

The utility model relates to the technical field of wastewater purification, in particular to a municipal wastewater treatment device.

Background technique

At present, sewage treatment is a process of purifying sewage to meet the water quality requirements for drainage or reuse of a certain water body. Sewage treatment is widely used in various fields, and is increasingly entering the daily life of ordinary people. However, most of the traditional municipal sewage treatment devices have a simple structure and only focus on the purification of sewage, while ignoring the waste left after the sewage treatment. Due to the large amount of organic matter in the sludge, if the sludge is treated, it can be reused as fertilizer.

Therefore, it is necessary to invent a municipal wastewater treatment equipment to solve the above problems.

Utility model content

The purpose of this utility model is to provide a municipal waste water treatment equipment to solve the problems raised in the above background technology.

In order to achieve the above purpose, the utility model provides the following technical scheme: a municipal waste water treatment equipment, comprising a grit chamber, a magnetic coagulation separation device and a sludge concentration tank, characterized in that: an inclined grit chamber is placed inside the grit chamber. The bottom of the grille is fixed on the support plate, the top of the grit chamber is provided with a sewage inlet, a primary filter screen is installed in the sewage inlet, a water pump is installed in the lower right of the grit chamber, the A primary sedimentation tank is connected to the right side of the grit chamber, a biological reaction tank is connected to the right side of the primary sedimentation tank, a dosing machine and a motor are installed above the biological reaction tank, and the motor is rotatably connected to the rotating shaft, and the rotation A stirring blade is fixed on the shaft, a secondary sedimentation tank is connected to the right side of the biological reaction tank, a magnetic coagulation separation device is connected to the right side of the secondary sedimentation tank, and a filter tank is connected to the right side of the magnetic coagulation separation device , a disinfection tank is connected to the right side of the filter tank, a dosing box is installed above the disinfection tank, a dosing pipe is installed below the dosing tank, a purified water outlet is opened on the right side of the disinfection tank, and the sink is installed The sand tank, the primary sedimentation tank, the secondary sedimentation tank and the magnetic coagulation separation equipment are connected to the sludge thickening tank through the sludge pipe. There is a sewage outlet under the left side of the sludge thickening tank. A sludge pump is installed on the sludge pipe between the sludge treatment devices.

Preferably, the sludge treatment device includes a sludge drying zone, an air heating zone, a humid and hot air treatment zone and an air-removal circulation device.

Preferably, the support plate is provided with small holes for mud leakage.

The technical effects and advantages of the present utility model: the utility model is a municipal wastewater treatment equipment through the concentration, dehydration and drying treatment of the sludge filtered and precipitated in the wastewater, on the one hand, it can eliminate the secondary pollution caused by the waste left by the treated wastewater, On the other hand, the organic matter in the sludge can be reused.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention.

In the figure: grid 1, sewage inlet 2, primary filter 3, primary sedimentation tank 4, dosing machine 5, motor 6, secondary sedimentation tank 7, magnetic coagulation separation equipment 8, filter tank 9, disinfection tank 10, Dosing box 11, purified water outlet 12, dosing pipe 13, sludge treatment device 14, sludge pump 15, sewage outlet 16, sludge thickening tank 17, rotating shaft 18, stirring blade 19, water pump 20, sludge pipe 21. Support plate 22, grit chamber 23, biological reaction tank 24.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. 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.

The utility model provides a municipal wastewater treatment equipment as shown in the figure, which includes a grit chamber 23, a magnetic coagulation separation device 8 and a sludge concentration tank 17, and is characterized in that: the grit chamber 23 is internally placed with inclined The grille 1, the grille 1 plays the role of filtering the floating matter in the sewage, the bottom of the grille 1 is fixed on the support plate 22, and the support plate 22 is provided with small holes for mud leakage, The top of the grit chamber 23 is provided with a sewage inlet 2, and a primary filter screen 3 is installed in the sewage inlet 2, and the primary filter screen 3 filters large debris in the water. A water pump 20 is installed, a primary sedimentation tank 4 is connected to the right side of the grit chamber 23, and a biological reaction tank 24 is connected to the right side of the primary sedimentation tank 4. The biological reaction tank 24 adds medicine to the water through the medicine dosing machine 5 The organic matter in the water is degraded, and the sewage is stirred by the stirring device, so that the added medicine is fully mixed with the sewage to improve the utilization rate of the medicine and the speed of the decomposition of the organic matter. Above the biological reaction tank 24 is installed. And the motor 6, the motor 6 is rotatably connected with the rotating shaft 18, the stirring blade 19 is fixed on the rotating shaft 18, the right side of the biological reaction tank 24 is connected with a secondary sedimentation tank 7, and the secondary sedimentation tank 7 The right side is connected with a magnetic coagulation separation device 8. The magnetic coagulation separation device 8 adds an appropriate amount of coagulant, magnetic seeds, coagulation aids, etc. into the sewage to quickly flocculate the pollutants. The quality of the magnetic coagulation separation device 8 is accelerated, the surface load of the sedimentation tank is increased, the hydraulic retention time is shortened, and the treatment efficiency and the effluent quality standard are improved. The right side of the filter tank 9 is connected with a disinfection tank 10. The disinfection tank 10 is uniformly added with chlorine dioxide disinfectant to the water through the dosing box 11 and the dosing pipe 13 for disinfection. box 11, a dosing pipe 13 is installed below the dosing box 11, a purified water outlet 12 is opened on the right side of the disinfection tank 10, the grit chamber 23, the primary sedimentation tank 4, the secondary sedimentation tank 7 and the magnetic The coagulation and separation equipment 8 is connected to the sludge thickening tank 17 through the sludge pipe 21 , and a sewage outlet 16 is provided under the left side of the sludge thickening tank 17 . A sludge pump 15 is installed on the sludge pipe 21 .

Further, in the above technical solution, the sludge treatment device 14 includes a sludge drying zone, an air heating zone, a humid and hot air treatment zone, and an air-removal circulation device.

Further, in the above technical solution, the support plate 22 is provided with small holes for mud leakage.

This practical working principle: Municipal wastewater is added to the grit chamber through the sewage inlet for static grit precipitation, while the primary filter screen and grille filter the wastewater when the sewage enters the grit chamber, and the larger suspended solids in the wastewater are filtered. After cleaning, the standing sewage is transported to the primary sedimentation tank by the water pump for standing, and the small suspended solids in the sewage are precipitated, and then enter the biological reaction tank to degrade the organic matter in the water, and then in the second stage. Further static precipitation is carried out in the secondary sedimentation tank, and then enters into the magnetic coagulation separation equipment to add appropriate amount of coagulant, magnetic seed, coagulant, etc. The quality of the flocs accelerates the settling speed of the flocs, increases the surface load of the sedimentation tank, shortens the hydraulic retention time, improves the treatment efficiency and the effluent quality standard, and then filters and disinfects the water, which has reached the dischargeable standard. , the sludge deposited in the grid pool is collected together for concentration, dehydration and drying, and the sludge is effectively disposed and reused.

Finally, it should be noted that the above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. , it can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements to some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model, All should be included within the protection scope of the present invention.

Claims (3)

1. The utility model provides a municipal wastewater treatment equipment, includes grit chamber (23), magnetic coagulation splitter (8) and sludge thickening tank (17), its characterized in that: the improved sand settling tank is characterized in that an inclined grid (1) is placed inside the sand settling tank (23), the bottom of the grid (1) is fixed on a supporting plate (22), a sewage inlet (2) is arranged at the top of the sand settling tank (23), a primary filter screen (3) is installed in the sewage inlet (2), a water pump (20) is installed below the right inside of the sand settling tank (23), a primary settling tank (4) is connected to the right side of the sand settling tank (23), a biological reaction tank (24) is connected to the right side of the primary settling tank (4), a dosing machine (5) and a motor (6) are installed above the biological reaction tank (24), the motor (6) is rotatably connected with a rotating shaft (18), stirring blades (19) are fixed on the rotating shaft (18), a secondary settling tank (7) is connected to the right side of the biological reaction tank (24), and a magnetic coagulation separation device (8) is connected to the right side of, magnetic coagulation splitter (8) right side is connected with filtering ponds (9), filtering ponds (9) right side is connected with disinfection pond (10), dosing tank (11) are installed to disinfection pond (10) top, dosing tank (11) below is installed and is added pencil (13), purified water export (12) have been seted up on disinfection pond (10) right side, grit chamber (23), elementary sedimentation tank (4), second grade sedimentation tank (7) and magnetic coagulation splitter (8) are passed through sludge pipe (21) and are connected with sludge concentration tank (17), sludge concentration tank (17) left side below is equipped with sewage outlet (16), install sludge pump (15) on sludge pipe (21) between sludge concentration tank (17) and sludge treatment device (14).

2. The municipal wastewater treatment apparatus of claim 1, wherein: the sludge treatment device (14) comprises a sludge drying area, an air heating area, a damp and hot air treatment area and an air circulation device.

3. The municipal wastewater treatment apparatus of claim 1, wherein: and small mud leakage holes are formed in the supporting plate (22).

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