CN108640425A - Composite flow filter tank and combination thereof - Google Patents

Abstract

The composite flow filter and combination provided by the present invention are characterized by comprising a matrix, an inlet channel, a pre-filter, a first backwashing system for flushing the pre-filter, a post-filter connected in series with the pre-filter, a second backwashing system for flushing the post-filter, and a clean water outlet area connected to the post-filter, wherein the pre-filter comprises a first air-water distribution area connected to the inlet channel, a pre-filter layer and an outlet area, the post-filter comprises a water inlet connected to the first outlet area, a post-filter layer, and a second air-water distribution area, one end of the first backwashing system is connected to the first air-water distribution area, one end of the second backwashing system is connected to the second air-water distribution area, and the pre-filter and the post-filter are integrated in the matrix.

Description

Composite flow filter and its combination

technical field

The invention relates to the field of sewage treatment, in particular to a composite flow filter and a combination thereof.

Background technique

In order to improve the quality of drinking water, more and more advanced drinking water treatment technologies aimed at removing organic pollution, ammonia nitrogen and toxic and harmful substances in water have been applied. The ozone bio-activated carbon process is one of the most widely used mainstream processes. However, under certain conditions, the process has risks such as biological leakage, increased turbidity of effluent, and bromate generation. In order to avoid the above risks, biological activated carbon treatment and sand filtration are generally used in combination to ensure the quality of the factory water. . However, due to the lack of suitable filter pool types, the two types of filters are combined and arranged in a centralized manner. At present, most projects still adopt the method of independently arranging the two types of filters. The loss is high, the cost is high and the management is inconvenient. A kind of composite flow combined filter tank that arranges biological activated carbon treatment and sand filtration in one filter tank needs to be invented.

Contents of the invention

The object of the present invention is to provide a compound flow filter with simple structure and low cost and its combination aiming at the defects and deficiencies of the prior art.

In order to achieve the above object, the present invention adopts the following technical solutions: a composite flow filter, characterized in that: comprising a substrate, an inlet channel, a pre-filter, a first backwash system for flushing the pre-filter, and The post-filter connected in series with the pre-filter, the second backwash system for flushing the post-filter, and the clean water area connected to the post-filter, the post-filter includes a water inlet connected to the first water outlet, The rear filter layer and the second air-water distribution area, one end of the first backwashing system is connected to the first air-water distribution area, one end of the second backwashing system is connected to the second air-water distribution area, the front The filter tank and the rear filter tank are integrated in the base body.

Further, the pre-filter layer includes an activated carbon filter layer and a gravel support layer arranged in sequence.

Further, the post filter layer includes a quartz sand filter material layer and a gravel support layer arranged in sequence.

Further, the first air-water distribution area includes a first air-water distribution tank, a first filter plate and a short handle filter head.

Further, the second air-water distribution area includes a second air-water distribution tank, a second filter plate and a long handle filter head, and the air-water distribution tank is connected to the backwashing system.

Further, the first backwashing system includes a backwashing air inlet, a backwashing water pipe, a flushing water drain, and a clean water outlet connected to the clean water area.

Further, the composite flow filter also includes a backwash drain valve connecting the rear filter tank and the flushing water drain, the backwash drain valve is closed during backwashing, and the backwash drain valve is opened to drain the flushing water after backwashing Drainage.

Further, a composite flow filter combination is provided, including the composite flow filter, a water outlet main pipe connecting each clean water area, and a comprehensive pipe gallery.

Further, each of the composite flow filters is connected in parallel with each other.

Further, the comprehensive pipe gallery includes a clear water outlet pipeline system, a filter backwash pipeline system, and an inspection channel.

In the composite flow filter of the present invention, biological activated carbon treatment and sand filtration are concentrated and arranged in the same filter tank, and a composite flow pattern combined in series is adopted, so that the filter tank type has the functions of conventional treatment and advanced treatment at the same time, and can solve the problem of traditional Biological leakage, increased turbidity of effluent water, bromate generation and other risks that may occur in the single-type filter can improve and ensure the quality of the factory water. Compared with the traditional filter, the combined filter has more comprehensive purification functions and saves more land. , less water head loss, less investment in civil engineering and equipment, centralized management and convenient operation.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

Fig. 1 is a schematic plan view of the compound flow filter combination of the present invention.

Fig. 2 is a schematic structural view of the compound flow filter of the present invention.

Detailed ways

Referring to Fig. 1, the technical solution adopted in this specific embodiment is: the present invention adopts the following technical solution, which is a compound flow filter 100, which is characterized in that it includes a matrix 10, an inlet channel 1, a prefilter 2, a pair of The first backwash system 4' for cleaning the pre-filter 2, the post-filter 3 connected in series with the pre-filter, the second backwash system 4 for cleaning the post-filter 2 and connecting the post-filter The clear water area 6, the pre-filter 2 includes the first air-water distribution area 22 connected to the water inlet, the pre-filter material layer 21 and the water outlet area 23, and the post-filter 3 includes the first water outlet area 23 connected The water inlet 31, the rear filter layer 32, and the second air-water distribution area 33, one end of the first backwash system 4' is connected to the first air-water distribution area 22, and one end of the second backwash system 4 is connected to The second air-water distribution area 33, the pre-filter 2 and the post-filter 3 are integrated in the matrix.

The water outlet area 23 is composed of stainless steel sumps evenly distributed above the filter tank, and the clear water outlet area is composed of a water seal well, an outlet weir and a clear water channel (not shown).

Further, the pre-filter layer 21 includes an activated carbon filter layer and a gravel support layer arranged in sequence.

Further, the post filter layer 32 includes a quartz sand filter material layer and a gravel support layer arranged in sequence.

Further, the first air-water distribution area 22 includes a first air-water distribution tank 221, a first filter plate 222 and a short handle filter head 223.

Further, the second air-water distribution area 33 includes a second air-water distribution tank 331, a second filter plate 332 and a long handle filter head 333, and the air-water distribution tank is connected to the backwashing system.

Further, the first backwash system 4 includes a backwash air inlet 41 , a backwash water pipe 42 , a flush water drain 42 and a clean water outlet 44 connected to a clean water area. The structure of the second backwash system 4' is the same as the backwash system 4, and the backwash air inlet and 41' and the backwash drain valve 5' are as shown in Figure 2.

Further, the composite flow filter 100 also includes a backwash drain valve 5 connecting the post filter 3 and the flushing water drain 42, the backwash drain valve 5 is closed during backwash, and the backwash drain valve is opened after the backwash is completed. 5 Drain to the drainage flushing water drain, and finally enter the waste water recovery system.

The present invention provides a combination of composite flow filters, including at least two composite flow filters 100 , a water outlet main pipe 7 connecting each clean water area 6 and a comprehensive pipe gallery 8 . In this embodiment, four composite flow filters 100 are selected to be connected in parallel, and the combined plane layout of the composite flow filters is shown in Figure 1, and 1# to 4# are arranged in parallel with a total of 4 grid filters (in actual use, the number of filter tanks is designed according to the water volume. ), each grid filter can be operated independently, and the single grid filter is backwashed in turn. room and blower room, the backwash pump room mainly provides backwash water for the rear sand filter (the front upflow activated carbon filter does not need backwash water), the blower room is the front activated carbon filter and the rear sand filter Provide backwash air.

Further, the composite flow filters 100 are connected in parallel, which can be freely selected according to the water volume.

Further, the integrated pipe gallery includes a clear water outlet pipeline system, a filter backwash pipeline system, and an inspection channel for managing, maintaining, repairing and other operations on the pipelines.

In the composite flow filter of the present invention, biological activated carbon treatment and sand filtration are concentrated and arranged in the same filter tank, and a composite flow pattern combined in series is adopted, so that the filter tank type has the functions of conventional treatment and advanced treatment at the same time, and can solve the problem of traditional Biological leakage, increased turbidity of effluent water, bromate generation and other risks that may occur in the single-type filter can improve and ensure the quality of the factory water. Compared with the traditional filter, the combined filter has more comprehensive purification functions and saves more land. , less water head loss, less investment in civil engineering and equipment, centralized management and convenient operation.

The above is only used to illustrate the technical solution of the present invention and not to limit it. Other modifications or equivalent replacements made by those skilled in the art to the technical solution of the present invention should be considered as long as they do not depart from the spirit and scope of the technical solution of the present invention. fall within the scope of the claims of the present invention.

Claims (10)

1. Composite flow filter, characterized in that it includes a substrate, an inlet channel, a pre-filter, a first backwash system for flushing the pre-filter, a post-filter connected in series with the pre-filter, and a rear filter The second backwash system for flushing with a filter and the clean water area connected to the post filter, the pre filter includes the first air-water distribution area connected to the water inlet, the pre filter layer and the water outlet area, the said pre filter The rear filter includes a water inlet connected to the first water outlet area, a rear filter layer, and a second air-water distribution area. One end of the first backwash system is connected to the first air-water distribution area. The second backwash system One end is connected to the second air-water distribution area, and the pre-filter and post-filter are integrated in the matrix. 2. The composite flow filter according to claim 1, characterized in that: the pre-filter layer includes activated carbon filter layer and gravel support layer arranged in sequence. 3. The composite flow filter according to claim 2, characterized in that: the post-filter layer comprises a quartz sand filter material layer and a gravel support layer arranged in sequence. 4. The composite flow filter according to claim 1, wherein the first air-water distribution area comprises a first air-water distribution groove, a first filter plate and a short handle filter head. 5. The composite flow filter as claimed in claim 4, characterized in that: the second air-water distribution area comprises a second air-water distribution tank, a second filter plate and a long handle filter head, and the air-water distribution tank Connect the backwash system. 6 . The compound flow filter according to claim 5 , wherein the first backwash system comprises a backwash air inlet, a backwash water pipe, a flush water drain and a clean water outlet connected to a clean water area. 7 . 7. The composite flow filter as claimed in claim 6, characterized in that: the composite flow filter also includes a backwash drain valve connecting the rear filter and the flushing water drain, and the backwash drain valve is closed during backwash After the backwash is finished, open the backwash drain valve to drain the water to the drain. 8. The composite flow filter combination, characterized in that it comprises at least two composite flow filters as claimed in any one of claims 1 to 7, a water outlet main pipe connecting each clean water area, and a comprehensive pipe gallery. 9. The composite flow filter combination according to claim 8, characterized in that: each of the composite flow filters is connected in parallel. 10. The compound flow filter combination according to claim 8, characterized in that: the comprehensive pipe gallery includes a clear water outlet pipeline system, a filter backwash pipeline system, and an inspection channel.