CN207645885U - A kind of slow draining treament system of biology - Google Patents

Abstract

The utility model provides a biological slow filter water treatment system, comprising a first biological slow filter device and a second biological slow rate device, the first biological slow filter device includes a first water inlet pipe, a first biological slow filter pool and the first outlet pipe, the outlet of the first bio-slow filter is provided with a first backwashing device, and the second bio-slow filter includes a second water inlet pipe, a second bio-slow filter and The second outlet pipe, the outlet of the second biological slow filter is provided with a second backwashing device, the outlet of the first biological slow filter is provided with a first shunt pipe and the second biological slow filter The water inlet is connected, and a second shunt pipe is provided at the water outlet of the second biological slow filter to communicate with the water inlet of the first biological slow filter. When one filter is used for backwashing, the other filter will undertake the task of water discharge to ensure uninterrupted water discharge, so that it can be backwashed, easy to clean and can work continuously.

Description

A kind of biological slow filtration water treatment system

technical field

The utility model relates to the field of water treatment facilities, in particular to a biological slow filtration water treatment system.

Background technique

With the process of industrialization in our country, rural water sources have also been polluted. The safety of drinking water for the scattered population in rural areas of our country is a major event related to the survival and life of rural residents. Therefore, solving the problem of drinking water safety for the scattered rural population has become an urgent livelihood issue.

Biological slow filtration technology has the advantages of simple operation and management, good effect, no need to put any chemicals, low cost, and is especially suitable for small rural water supply projects. However, judging from the existing actual production, although the water output is basically up to the standard, due to the limitations of the biological slow filter, it needs to be cleaned regularly, which is time-consuming and laborious for the existing buried filter. At the same time, technical personnel are required to operate, which consumes financial and manpower, and the formation of biofilm is required for a period of time after cleaning, and the effluent cannot meet the standard during this period.

Utility model content

In view of this, it is necessary to provide a biological slow filtration water treatment system that can be backwashed, is convenient to clean and can work continuously.

The utility model provides a biological slow filter water treatment system, comprising a first biological slow filter device and a second biological slow filter device, the first biological slow filter device includes a first water inlet pipe, a first biological slow filter pool and the first outlet pipe, the outlet of the first biological slow filter is provided with a first backwash device, the first outlet pipe is provided with a first outlet valve, and the second biological slow filter includes sequentially connected The second water inlet pipe, the second biological slow filter and the second outlet pipe, the outlet of the second biological slow filter is provided with a second backwashing device, and the second outlet pipe is provided with a second outlet valve, The water outlet of the first biological slow filter is provided with a first shunt pipe connected to the water inlet of the second biological slow filter, and the water outlet of the second biological slow filter is provided with a second shunt pipe connected with the water inlet of the second biological slow filter. The water inlet of the first biological slow filter is connected, and the first biological slow filter and the second biological slow filter are both provided with multi-layer packing.

The utility model has the following beneficial effects:

The utility model provides a biological slow filter water treatment system, which is provided with a backwashing device. Since the outlet of the first biological slow filter is provided with a first shunt pipe connected to the water inlet of the second biological slow filter, the second biological There is a second shunt pipe at the outlet of the slow filter to communicate with the water inlet of the first biological slow filter, which can create a difference in the growth time of the biofilm in the two filters, and use a backwashing device regularly in one filter, and the other when cleaning One filter will undertake the task of water discharge to ensure uninterrupted discharge of water up to the standard; a part of the effluent is introduced into the water inlet of another filter through the shunt pipe to dilute the concentration of pollutants and reduce the load of the filter, and after cleaning one of the filters due to its biological When the membrane is not formed and the effluent is not up to the standard, the water can be passed through the shunt pipe to another filter with water purification ability by closing the outlet valve of that filter, and at the same time, it can also ensure the formation of biofilm in the cleaned pool. Using it greatly increases the effective filtration and purified water, achieving the effect of one plus one greater than two.

Description of drawings

Fig. 1 is the structural representation of a kind of biological slow filtration water treatment system that the utility model embodiment provides;

Fig. 2 is the top view of a kind of biological slow filtration water treatment system provided by the embodiment of the utility model;

Fig. 3 is a front view of a biological slow filtration water treatment system provided by an embodiment of the present invention.

1. The first biological slow filter device; 11. The first water inlet pipe; 12. The first biological slow filter tank; 13. The first water outlet pipe; 14. The first backwashing device; 15. The first water outlet valve; 16. The first 1 shunt pipe; 2, the second biological slow filter device; 21, the second water inlet pipe; 22, the second biological slow filter tank; 23, the second water outlet pipe; 24, the second backwashing device; 25, the second water outlet valve ; 26, the second shunt pipe; 3, the main water inlet; 4, the overflow pipe.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

As shown in Figures 1-3, the utility model embodiment provides a biological slow filtration water treatment system, including a first biological slow filtration device 1 and a second biological slow filtration device 2, the first biological slow filtration device 1 Including the first water inlet pipe 11, the first biological slow filter tank 12 and the first water outlet pipe 13 connected in sequence, the first backwashing device 14 is provided at the outlet of the first biological slow filter tank 12, and the first outlet The water pipe 13 is provided with a first water outlet valve 15, and the second biological slow filter device 2 includes a second water inlet pipe 21, a second biological slow filter tank 22 and a second water outlet pipe 23 connected in sequence, and the second biological slow filter The water outlet of the pool 22 is provided with a second backwashing device 24, the second water outlet pipe 23 is provided with a second water outlet valve 25, and the first biological slow filter 12 water outlet is provided with a first shunt pipe 16 and the water outlet of the first biological slow filter. The water inlet of the second biological slow filter 22 is connected, and the outlet of the second biological slow filter 22 is provided with a second shunt pipe 26 to communicate with the water inlet of the first biological slow filter 12. Both the slow biological filter 12 and the second slow biological filter 22 are provided with multiple layers of fillers. In the biological slow filtration water treatment system provided by the embodiment of the utility model, a first backwashing device 14 is provided at the water outlet of the first biological slow filter 12, and a first backwash device 14 is provided at the water outlet of the second biological slow filter 22. The second backwashing device 24 is arranged. Since the first biological slow filter 12 water outlets are provided with the first shunt pipe 16 to communicate with the second biological slow filter 22 water inlets, the second biological slow filter 22 water outlets are provided with A second shunt pipe 26 is connected to the water inlet of the first bio-slow filter tank 12, so that the biofilm growth time difference of the two filter tanks can be made, and a backwashing device is used regularly in one filter tank, and the other filter tank will bear the burden when cleaning. Water discharge task, to ensure uninterrupted standard water discharge; the first biological slow filter 12 introduces a part of the effluent water into the water inlet of the second biological slow filter 22 through the first diversion pipe 16, and the second biological slow filter 22 passes through the second diversion pipe 26 A part of the effluent is introduced into the water inlet of the first biological slow filter 12, which can dilute the concentration of pollutants and reduce the load of the filter, and after cleaning one of the filters, because its biofilm is not formed, when the effluent is not up to standard, by closing that The water outlet valve of the filter allows the water to pass through the shunt pipe to another filter with water purification capacity, and at the same time, it can also ensure the formation of biofilm in the cleaned pool. The use of the two pools at the same time greatly increases the amount of efficient filtration and purified water. One plus one is greater than two.

Optimizing the above embodiment, as shown in Figures 1-2, the first backwashing device 14 includes a first backwashing pipe arranged at the water outlet of the first biological slow filter 12, and the first backwashing One end of the pipe communicates with the first biological slow filter 12, the other end of the first backwash pipe communicates with the bottom of the second biological slow filter 22, and the first backwash pipe is provided with a powered First backwash water pump. When the first biological slow filter 12 needs to be cleaned, the first backwash pipe can be used to utilize the water of the second biological slow filter 22, without manually digging out the filler in the first biological slow filter 12 for cleaning, saving It saves time and cost and takes water directly from the water outlet, which is convenient and quick, and can restore the original function after backflushing to improve the filtration accuracy without affecting the flow rate or filtration cycle. Backwashing, also known as filter flushing, is the operation process of flushing the filter layer with reverse water flow to restore the normal operation of the filter. In operation, the water flows through the bottom drainage system and reverses through the filter tank to flush out the clogging material in the filter material and reduce the factors that cause head loss. Different types of filters have different recoil intensity and recoil time. For fast filters, the recoil intensity is 36-54m/h, the backwash time is 5-10min, and the expansion of the filter layer reaches 40%-50%.

Optimizing the above embodiment, as shown in Figures 1-2, the second backwashing device 24 includes a second backwashing pipe arranged at the outlet of the second biological slow filter 22, and the second backwashing One end of the pipe communicates with the first biological slow filter 12, the other end of the second backwash pipe communicates with the bottom of the first biological slow filter 12, and the second backwash pipe is provided with a powered Second backwash water pump. When the second biological slow filter 22 needs to be cleaned, the second backwash pipe can be used to utilize the water of the first biological slow filter 12, without manually digging out the filler in the second biological slow filter 22 for cleaning, saving It saves time and cost and takes water directly from the water outlet, which is convenient and quick, and can restore the original function after backflushing to improve the filtration accuracy without affecting the flow rate or filtration cycle.

Optimizing the above embodiment, as shown in Figure 1-Fig. The water pipes 21 are all in communication with the water inlet main pipe 3 .

To optimize the above embodiment, as shown in FIG. 3 , the packing includes a gravel support layer, a palm cushion layer and a quartz sand filter layer arranged in sequence from bottom to top. As the filler of the filter layer structure, the combination of gravel support layer, palm cushion layer and quartz sand filter layer arranged in sequence from bottom to top greatly optimizes the purification effect and ensures water quality safety.

Optimizing the above embodiment, as shown in Figure 3, the part of the first water inlet pipe 11 located in the first biological slow filter 12 is located above the quartz sand filter layer in the first biological slow filter 12, and The part of the second water inlet pipe 21 located in the second biological slow filter 22 is located above the quartz sand filter layer in the second biological slow filter 22 .

Optimizing the above-described embodiment, as shown in Figure 3, above the first biological slow filter 12 and the second biological slow filter 22, an overflow pipe 4 is provided to prevent the upper part of the tank body from overflowing, and the overflow One end of the pipe 4 communicates with the corresponding pool body, and the other end communicates with the outside world.

To optimize the above embodiment, as shown in FIG. 2 , the first water inlet pipe 11 , the second water inlet pipe 21 , the first distribution pipe 16 and the second distribution pipe 26 are all provided with valves for opening and closing.

The usage method of a kind of biological slow filtration water treatment system provided by the embodiment of the utility model is as follows:

At the beginning of use, generally speaking, the biofilm grows in about 3 days after cleaning. When using for the first time, close the valve at the water inlet and shunt pipe at one end of one of the biological slow filters, and let the other filter Start working for three to four days before opening the valve to start another filter tank, which makes there a time difference when the critical time for cleaning is reached to ensure continuous water outflow. Such as specifically, after cleaning, the growth of the biofilm is about 3 days, and the valves on the first water inlet pipe 11 and the first shunt pipe 16 of the first biological slow filter 12 are all closed when using for the first time. Close, let the second biological slow filter 22 start working for three to four days, and then open the valves on the first water inlet pipe 11 and the first shunt pipe 16 of the first biological slow filter 12, this At this time, the first biological slow filter 12 also starts to work.

Under normal operating conditions, the first biological slow filter 12 and the second biological slow filter 22 work together, because the first biological slow filter 12 outlets are provided with the first shunt pipe 16 and the second biological slow filter 22 The water inlet is connected, and the outlet of the second biological slow filter 22 is provided with a second shunt pipe 26 to communicate with the water inlet of the first biological slow filter 12, where the first shunt pipe 16 and the second shunt pipe 26 can be adjusted Angle to control its flow to avoid excessive loss of water flow. The effect of entering the water inlet of another filter through the shunt pipe is to dilute the concentration of pollutants and increase the flow through the valve in the later period of the use cycle to prolong the use cycle.

When backwashing, take the backwashing of the first biological slow filter 12 as an example here:

Rinse when reaching the maximum biofilm thickness, close the first shunt pipe 16, start backwashing, and open the first shunt pipe 16 after being discharged from the water outlet of the first biological slow filter tank 12, close the first biological slow filter tank 12 this moment Due to the unformed biofilm of the first biological slow filter 12, the effluent of the first biological slow filter 12 cannot meet the standard, and all the water is discharged from the second biological slow filter 22. After 3 to 4 days, the first biological slow filter Pool 12 biofilm formation, now repeat the above operation to clean the second bio-slow filter pool 22.

When the maximum biofilm thickness is not reached, the first water outlet valve 15 of the first biological slow filter tank 12 can be closed to start backwashing. At this time, water flows into the second biological slow filter tank 22 through the first shunt pipe 16, and the second biological slow filter tank 22 Slow filter tank 22 works normally, guarantees water outlet. It must be noted that in this case, it can only be operated under the condition that the load of the second slow biological filter 22 is sufficient to deal with the water quantity and quality of the backwash of the first slow biological filter 12 .

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in the Within the protection scope of the present utility model.

Claims (8)

1. A biological slow filter water treatment system, characterized in that: comprise a first biological slow filter device (1) and a second biological slow filter device (2), the first biological slow filter device (1) includes sequentially connected The first water inlet pipe (11), the first biological slow filter tank (12) and the first water outlet pipe (13), the outlet of the first biological slow filter tank (12) is provided with the first backwashing device (14 ), the first water outlet pipe (13) is provided with a first water outlet valve (15), and the second biological slow filter device (2) includes a second water inlet pipe (21), a second biological slow filter tank connected in sequence (22) and the second outlet pipe (23), the second backwashing device (24) is provided at the outlet of the second biological slow filter (22), and the second outlet pipe (23) is provided with the second A water outlet valve (25), the outlet of the first biological slow filter (12) is provided with a first shunt pipe (16) communicated with the water inlet of the second biological slow filter (22), the second Biological slow filter (22) outlet place is provided with second shunt pipe (26) and is communicated with described first biological slow filter (12) water inlet, and described first biological slow filter (12) and second The biological slow filter (22) is equipped with multiple layers of fillers. 2. The biological slow filter water treatment system as claimed in claim 1, characterized in that, the first backwash device (14) comprises a first A backwash pipe, one end of the first backwash pipe is communicated with the first biological slow filter (12), and the other end of the first backwash pipe is connected with the bottom of the second biological slow filter (22) In general, the first backwash pipe is provided with a first backwash water pump to provide power. 3. The biological slow filter water treatment system as claimed in claim 1, characterized in that: the second backwashing device (24) comprises a second biological filter at the outlet of the second biological slow filter (22). A backwash pipe, one end of the second backwash pipe is connected to the first biological slow filter (12), and the other end of the second backwash pipe is connected to the bottom of the first biological slow filter (12) Pass, the second backwash pipe is provided with a second backwash water pump to provide power. 4. The biological slow filter water treatment system as claimed in claim 1, characterized in that: the first biological slow filter device and the second biological slow filter device are connected through the main water inlet (3), and the first inlet Both the water pipe (11) and the second water inlet pipe (21) are in communication with the water inlet main pipe (3). 5. The biological slow filtration water treatment system according to claim 1, characterized in that: the filler includes a gravel support layer, a palm cushion layer, and a quartz sand filter layer arranged in sequence from bottom to top. 6. The biological slow filter water treatment system according to claim 1, characterized in that: the part of the first water inlet pipe (11) located in the first biological slow filter (12) is located in the first biological filter Above the quartz sand filter layer in the slow filter (12), and the part of the second water inlet pipe (21) located in the second biological slow filter (22) is located in the second biological slow filter (22 ) above the inner quartz sand filter layer. 7. The biological slow filtration water treatment system according to claim 1, characterized in that: above the first biological slow filter (12) and the second biological slow filter (22), there are preventive tanks An overflow pipe (4) overflowing from the upper part, one end of the overflow pipe (4) communicates with the corresponding pool body, and the other end communicates with the outside world. 8. The biological slow filtration water treatment system according to claim 1, characterized in that: the first water inlet pipe (11), the second water inlet pipe (21), the first shunt pipe (16) and the second shunt pipe (26) are all provided with the valve that is used for opening and closing.