CN103253802A - One-piece sewage purification device - Google Patents

Abstract

The invention discloses one-piece sewage purification device, which has a steel housing. On end of the steel housing is provided with a raw water inlet and the other end of the steel housing is provided with a purified water outlet. The steel housing is divided into a reactor housing and a gas floatation and filtration housing by a first separator plate. Stirring blades are arranged inside the reactor housing. The bottom of the reactor housing is provided with a reaction water-channel. The gas floatation and filtration housing is divided into a gas floatation area and a filtration area by a second separator plate. The bottom of the gas floatation area is provided with a dissolved air releaser. Filter cloth is disposed inside the filtration area. A gas floatation and filtration housing track is provided with a mobile dolly. A scum board is installed on the mobile dolly. The scum board is positioned on the upper layer of the air floatation area. The mobile dolly is connected with a dredge pump which is connected with a mud suction branch pipe. The mud suction branch pipe closely clings to the filter cloth. The filtration area is separated from the purified water outlet by a third separator plate. As an air floatation tank and a filter tank are integrated as one body, volume is greatly reduced, and floor space is minimized. As the dolly is used for both air floatation and filtration, production costs are reduced. And as the gradient pore stirring blades are adopted, raw water flocculation time is shortened.

Description

Integrated sewage purification device

technical field

The invention relates to the technical field of sewage treatment, in particular to an integrated sewage purification device suitable for small and medium-scale domestic sewage, and also suitable for the treatment of small and medium-scale industrial sewage subject to general pollution. the

Background technique

Sewage treatment technology and equipment have made great progress in recent years, especially the filter cloth filter has been widely used. have been greatly improved. However, the existing continuous processes of reaction, air flotation and filtration often use concrete structure pools, and the process flow is as follows (see Figure 1):

The raw water enters the raw water inlet 1ˊ and enters the reaction tank 2ˊ. After being stirred by the stirring paddle 3ˊ, it flows out from the water outlet 4ˊ at the lower part of the reaction tank, or passes through pipes, valves, or directly enters the air flotation tank, and is installed at the bottom of the air flotation tank. Dissolved air release device 5ˊ Generate a large number of tiny air bubbles, lift the flocs and debris in the water to the water surface, and form a scum layer 9ˊ. The mobile car 8ˊ in the air flotation tank 10ˊ is driven by a motor at regular intervals, and walks back and forth along the track, driving the scum scraper 7ˊ to scrape the scum into The scum outlet is 6'; the water treated by air flotation enters the filter tank through pipelines, valves 11' or directly, and the moving trolley 13' of the filter tank is driven by a motor at regular intervals, walking back and forth along the track, and the dredge pump is started at the same time to perform the filtering process. For backwashing of the cloth, the clean water is discharged from the clean water outlet 18'. the

From the above description, it can be known that the whole equipment needs three reinforced concrete pools: reaction tank, air flotation tank and filter tank, which occupy a large area, a series of valves and water pumps, cumbersome operating procedures, and time-consuming and expensive on-site installation and commissioning. the

Contents of the invention

The technical problem to be solved by the present invention is: in order to overcome the problems of the existing sewage treatment equipment, such as large volume, complex structure, cumbersome operation, time-consuming installation and debugging, and costing money, an integrated sewage purification device is provided, which has a compact structure and a small volume. Small and compact, it integrates a number of mature water treatment processes and has high treatment efficiency. the

The technical solution adopted by the present invention to solve the technical problem is: an integrated sewage purification device with a steel shell, one end of the steel shell is provided with a raw water inlet, the other end is provided with a clean water output port, and the steel shell is composed of a second The first partition is divided into a reactor shell and an air flotation filter shell. The reactor shell is equipped with stirring blades, and the bottom of the reactor shell is provided with a reaction water channel; the air flotation filter shell is divided into an air flotation filter shell by the second partition. There is a dissolved air releaser at the bottom of the air flotation area, a filter cloth is installed in the filter area, a mobile trolley is installed on the track of the air flotation filter shell, and a slag scraper is installed on the mobile trolley. The slag scraper is located at On the upper layer of the air flotation area, the mobile trolley is connected to a dredging pump, and the dredging pump is connected to a dredging branch pipe, which is close to the filter cloth, and the filtering area is separated from the purified water outlet by a third partition. the

The stirring paddles are stirring paddles with gradually changing pores. the

A scum outlet is provided at the end of the scum scraper on the third partition. the

A clean water output channel is provided under the filter cloth at the bottom of the filter area. the

The beneficial effects of the present invention are: the air flotation tank and the filter tank are integrated, which greatly reduces the volume of the whole device and reduces the occupied area;

The air flotation and filtration share one trolley, which reduces the production cost;

The innovatively designed gradient pore stirring blade shortens the coagulation time of raw water;

The raw water that has completed the coagulation process is directly propelled slowly from the bottom of the reactor to the air flotation and filter tanks without being transported by pipelines, which reduces the disturbance to the flocs in the water flow, reduces the damage to the flocs, and provides fine air bubbles The lifting of floc debris to the water surface provides good conditions;

Reduce the energy consumption of the whole device. the

Description of drawings

Figure 1 is a schematic diagram of the original reaction, air flotation and filtration split device

Fig. 2 is the structural representation of the integrated sewage purification device of the present invention

Detailed ways

Now, the present invention will be described in further detail in conjunction with the accompanying drawings and specific embodiments. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention. the

As shown in Figure 2, an integrated sewage purification device has a steel shell 1, one end of the steel shell 1 is provided with a raw water inlet 2, and the other end is provided with a clean water output port 17, and the steel shell 1 is separated by a first compartment. The plate 4 is divided into a reactor shell 1-1 and an air flotation filter shell. The reactor shell 11 is provided with a stirring paddle 3 with gradient pores, and the inner bottom of the reactor shell 1-1 is provided with a reaction water channel 5; The filter shell is divided into air flotation zone 1-2 and filter zone 1-3 by the second partition 6, the bottom of the air flotation zone 1-2 is provided with a dissolved air releaser 7, and the filter zone 1-3 is provided with a filter cloth 8 , the track of the air flotation filter shell is provided with a mobile trolley 9, and a slag scraper 10 is installed on the mobile trolley 9, and the slag scraper 10 is located on the upper layer of the air flotation area 1-2, and the mobile trolley 9 is connected with a dredge pump 14, which sucks The mud pump 10 is connected with a mud suction branch pipe 15, and the mud suction branch pipe 15 is close to the filter cloth. The filter cloth 8 at the bottom of the filter area 1-3 is provided with a clean water output channel 16, and the filter area 1-3 is connected to the clean water output port. 17 are separated by a third partition 18, and the end of the scum scraper on the third partition 18 is provided with a scum outlet 20. the

The working process of this device is as follows: the raw water that has been added with coagulant enters the reactor shell 1-1 from the raw water inlet 1, and enters the stirring zone tangentially along the rotation direction of the stirring paddle 3, and the paddle adopts the form of mesh gradient pores. the

The water that has formed larger flocs flows through the reaction water channel at the bottom of the reactor housing 1-1 and enters the air flotation filter housing; because the flow rate in the lower part of the reactor is very slow, and because the space of the reaction water channel 5 is large enough, it will not Cause damage to flocs that have formed in the water flow;

As soon as the water flow containing larger flocs enters the air flotation filter shell, it encounters a large number of tiny bubbles generated by the dissolved air releaser 7, and the tiny bubbles adhere to the flocs, resulting in an overall specific gravity smaller than that of water, resulting in The buoyancy brings the flocs to the water surface to form a scum layer 19, which is scraped by the scum scraper 10 to the scum outlet 20 and discharged out of the shell;

The water flow in the air flotation filter shell is carrying out air flotation, and the floc debris in the water flow is continuously lifted to the water surface, and the water flow below the water surface is being filtered through the filter cloth 8 at the same time, and the filtered clean water is output through the clean water port 16 out. In the air flotation filter shell, the two solid-liquid and separation processes of air flotation and filtration are actually carried out at the same time, which greatly improves the work efficiency. the

A reactor shell is set up at one end of the steel shell, and a stirring paddle with gradually changing pores is arranged in the reactor shell. The gradient pore stirring paddle is redesigned according to the principle of hydrodynamics, which can fully coagulate the sewage in the reactor; set up an air flotation filter area between one plate of the reactor, and use the air flotation process to replace the traditional sedimentation process , and share a pool body with the filter cloth filter. In the public air flotation filtration pool, an innovatively designed mobile trolley is installed, which is not only the scraping trolley for the air flotation pool, but also the backwash trolley for the filter pool. Such treatment, on the one hand, reduces the volume of the steel shell, and at the same time saves the production cost of a trolley. the

Claims (4)

1. An integrated sewage purification device, characterized in that: it has a steel shell, one end of the steel shell is provided with a raw water inlet, and the other end is provided with a clean water output port, and the steel shell is divided into a reactor by a first partition Shell and air flotation filter shell, the reactor shell is equipped with stirring blades, and the bottom of the reactor shell is provided with a reaction water channel; the air flotation filter shell is divided into an air flotation area and a filter area by the second partition, and the air flotation There is a dissolved air releaser at the bottom of the filter area, a filter cloth in the filter area, a moving trolley on the track of the air flotation filter housing, and a slag scraper is installed on the mobile trolley, the slag scraper is located on the upper layer of the air flotation area, and the mobile trolley A dredge pump is connected, and a dredge branch pipe is connected to the dredge pump. The mud suction branch pipe is close to the filter cloth, and the filter area is separated from the clean water output port by a third partition. 2. The integrated sewage purification device according to claim 1, characterized in that: the stirring blade is a gradually changing gap stirring blade. 3. The integrated sewage purification device according to claim 1, characterized in that: the end of the scum scraper on the third partition is provided with a scum outlet. 4. The integrated sewage purification device according to claim 1, characterized in that: a clean water output channel is provided under the filter cloth at the bottom of the filter area.

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