CN211595374U - A sewage treatment equipment combined with suspended biofilm and deep filtration - Google Patents

Abstract

The utility model provides a sewage treatment device that suspension biomembrane and depth filtration ally oneself with usefulness, including pipe chute settling zone, anoxic zone, anaerobic zone, anoxic zone, catalytic oxidation district, vertical flow formula settling zone, filter cloth filtering area, clear water district, ultraviolet disinfection district and equipment room in advance, water gets into from total water inlet and goes out water behind pipe chute settling zone, anoxic zone, catalytic oxidation district, vertical flow formula settling zone, filter cloth filtering area, clear water district and the ultraviolet disinfection district, the catalytic oxidation district including floated filler, micropore aeration system and with the dark aeration that micropore aeration is responsible for the headtotail. The sewage treatment equipment combining the suspended biological membrane with the deep filtration reduces the generation amount of sludge in the contact oxidation area and reduces the load of the biological membrane; the micropore aeration system increases dissolved oxygen, and simultaneously takes away carbon dioxide and other harmful gases in water, prevents that gas from jacking up the biomembrane because of buoyancy, and then makes the biomembrane be difficult to drop.

Description

A sewage treatment equipment combined with suspended biofilm and deep filtration

technical field

The utility model relates to the technical field of domestic sewage treatment, in particular to a sewage treatment device used in combination with a suspended biological membrane and deep filtration.

Background technique

In view of the scattered living in rural areas, although there is centralized renovation, the cost of the pipe network is relatively high, and the laying of the pipe network must be determined according to the actual situation, and it cannot reach 100% all-round coverage; ), but only treated by septic tanks (sewage tanks), the effluent quality cannot meet the discharge standards.

The existing sewage treatment facilities are equipped with contact oxidation ponds, which form biofilms through microbial growth media to realize the oxidation of sewage.

Utility model content

The purpose of the present utility model is to provide a sewage treatment equipment combined with suspended biological membrane and depth filtration, so as to solve the problem that the biological membrane of the existing sewage treatment equipment is easy to fall off.

The utility model provides a sewage treatment equipment combined with a suspended biological membrane and deep filtration, which comprises an inclined tube sedimentation zone, a pre-anoxic zone, an anaerobic zone, an anoxic zone, a contact oxidation zone, a vertical flow sedimentation zone, a filter Cloth filter area, clean water area, ultraviolet disinfection area and equipment room, water enters from the main water inlet through inclined tube sedimentation area, anoxic area, contact oxidation area, vertical flow sedimentation area, filter cloth filter area, clean water area and ultraviolet disinfection Water comes out after the zone, and the contact oxidation zone includes a suspended filler, a microporous aeration system, and a dark aeration main pipe connected to the microporous aeration system.

In the sewage treatment equipment used in combination with the above-mentioned suspended biofilm and deep filtration, the microorganisms in the contact oxidation zone are attached to the suspended packing, and the effluent from the anoxic zone flows through the suspended packing at a certain flow rate, and contacts with the biofilm. Under aerobic conditions Remove COD (chemical oxygen demand) in sewage and convert ammonia nitrogen into nitrate nitrogen and nitrite nitrogen, and can reduce the amount of sludge generated and the load of biofilm; the dark aeration main pipe is on the top grid One side of the cover plate is connected to the bottom microporous aeration system; the microporous aeration system also takes away carbon dioxide and other harmful gases in the water while increasing the dissolved oxygen, preventing the gas from lifting the biofilm due to buoyancy, and then The biofilm is not easy to fall off.

Further, the inclined tube sedimentation area includes a water inlet and water distribution system, an inclined tube filler arranged on one side of the water inlet and water distribution system, a mud discharge system arranged on the lower side of the inclined tube filler, and a The water outlet system on the upper side of the tube sedimentation zone and the first venting tube.

Further, the anoxic zone includes a first nitrification solution return system, a first sludge return system and a second vent pipe arranged on the upper side of the anoxic zone.

Further, the vertical flow sedimentation zone includes a water inlet system connected to the contact oxidation zone, a mud storage hopper arranged on the lower side of the vertical flow sedimentation zone, and a central inlet located in the middle of the vertical flow sedimentation zone. A water pipe, a vent pipe arranged on the upper side of the vertical flow sedimentation zone, a second nitrification liquid return system, a second sludge return system and a water outlet system.

Further, the filter cloth filtering zone includes a filter cloth and a backwashing system.

Further, the sterilization area includes an ultraviolet sterilizer.

Further, the dark aeration main pipe is connected with the microporous aeration system through an electric valve.

Further, the pre-anoxic zone is connected with the first nitrification solution return system and the first sludge return system at the same time, and a pre-anoxic vent pipe is provided at the upper end of the pre-anoxic zone.

Further, the anaerobic zone includes a suspended spherical filler and an anaerobic vent pipe, and the anaerobic zone is connected with the first sludge return system.

Description of drawings

Fig. 1 is the top-view structural schematic diagram of the sewage treatment equipment used in combination with suspended biofilm and depth filtration in the first embodiment of the present utility model;

FIG. 2 is a schematic front view of the structure of the clean water area in the sewage treatment equipment used in combination with the suspended biofilm and the depth filtration in FIG. 1 .

Description of main component symbols:

The following specific embodiments will further illustrate the present invention with reference to the above drawings.

Detailed ways

In order to facilitate the understanding of the present utility model, the present utility model will be more fully described below with reference to the related drawings. Several embodiments of the present invention are shown in the accompanying drawings. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for illustrative purposes only.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Please refer to FIG. 1 and FIG. 2 , a sewage treatment equipment combined with a suspended biofilm and deep filtration provided by an embodiment of the present invention includes an inclined tube sedimentation zone 1, a pre-anoxic zone 21, an anaerobic zone 22, an oxygen-deficient zone Zone 2, contact oxidation zone 3, vertical flow sedimentation zone 4, filter cloth filter zone 5, clean water zone 6, ultraviolet disinfection zone 7 and equipment room 8, water enters from the main water inlet 903 and passes through the inclined pipe sedimentation zone 1, anoxic Zone 2, contact oxidation zone 3, vertical flow sedimentation zone 4, filter cloth filter zone 5, clear water zone 6 and ultraviolet disinfection zone 7, the contact oxidation zone 3 includes suspended filler 301, microporous aeration system 303 And the dark aeration main pipe (not shown in the figure) connected with the microporous aeration system 303 .

Specifically, in this embodiment, the dark aeration main pipe is connected to the microporous aeration system 303 through an electric valve 302, which is used to control the automatic operation of the microporous aeration system 303, reduce personnel operations, and improve automation degree.

The above-mentioned sewage treatment equipment used in combination with suspended biofilm and deep filtration, the microorganisms in the contact oxidation zone 3 are attached to the suspended filler 301 to form a biofilm, and the effluent of the anoxic zone 2 flows through the suspended filler 301 at a certain flow rate, and the biological Membrane contact, remove COD (chemical oxygen demand) in sewage under aerobic conditions and convert ammonia nitrogen into nitrate nitrogen and nitrite nitrogen, and can reduce the amount of sludge produced and the load of biofilm; dark The main aeration main pipe is on one side of the top grille cover, and is connected to the bottom microporous aeration system 303; the microporous aeration system 303 also takes away carbon dioxide and other harmful gases in the water while increasing dissolved oxygen. Prevent the gas from lifting the biofilm due to buoyancy, thereby making the biofilm not easy to fall off.

Specifically, in this embodiment, the inclined tube sedimentation area 1 includes a water inlet and water distribution system (not shown in the figure), an inclined tube filler 101 arranged on one side of the water inlet and water distribution system, and a The sludge discharge system on the lower side of the inclined tube packing (not shown in the figure), the water outlet system provided on the upper side of the inclined tube sedimentation zone, and the first venting pipe 9021. The sedimentation area adopts the inclined tube packing 101. Under the condition of a certain effective volume of the sedimentation tank, reducing the hydraulic radius and increasing the sedimentation area can improve the removal rate of suspended solids.

Specifically, in this embodiment, the anoxic zone 2 includes a first nitrification solution return system (ie the end pipeline of the nitrification solution return pump 402 ), a first sludge return system (ie the end of the sludge return pump 401 ) pipeline) and the second venting pipe 9022 arranged on the upper side of the anoxic zone 2. Among them, the nitrifying liquid and the return sludge are fully mixed with the influent to maintain the sludge concentration in the anaerobic tank. At the same time, there is sufficient carbon source in the influent to fully carry out denitrification, remove ammonia nitrogen and reduce total nitrogen. During the implementation process The nitrifying liquid reflux ratio and the sludge reflux ratio can be adjusted according to the effluent ammonia nitrogen and total nitrogen requirements.

Specifically, in this embodiment, the vertical flow sedimentation zone 4 includes a water inlet system (not shown in the figure) connected to the contact oxidation zone, a mud storage hopper (not shown in the figure) disposed on the lower side of the vertical flow sedimentation zone ( Not shown in the figure), the central water inlet pipe 403 located in the middle of the vertical flow sedimentation zone, the vent pipe located on the upper side of the vertical flow sedimentation zone, the second nitrification liquid return system (that is, the nitrification liquid return pump 402), the second sludge return system (ie the front end pipeline of the sludge return pump 401) and the water outlet system (not shown in the figure). The sewage treated in the contact oxidation zone 3 enters the vertical flow sedimentation zone 4 through the central water inlet pipe 403, and part of the unimplanted organic matter, metabolic intermediates, shed biofilms and unimplanted microorganisms are deposited under the action of gravity. In the sludge hopper, the clarified water flows out from the upper overflow weir, and through the sludge return pump 401, part of the sludge deposited in the sludge hopper passes through the sludge return pipe on the top grille cover, and returns to the anoxic tank 2, The nitrifying liquid return pump 402 returns the nitrifying liquid to the anoxic tank 2 through the sludge return pipe on the top grille cover, and the excess sludge in the sludge hopper is regularly discharged by the vent pipe to further separate the mud and water, and the sewage is discharged. Mud concentrate.

Specifically, in this embodiment, the pre-anoxic zone 21 is connected to the first nitrification solution return system and the first sludge return system at the same time, and the upper end of the pre-anoxic zone 21 is provided with a pre-anoxic discharger. Empty pipe (not shown) for exhausting air. Among them, in the pre-anoxic zone 21, the nitrifying liquid, the return sludge and the influent are fully mixed to maintain the sludge concentration in the pre-anoxic zone 21, and at the same time, there is sufficient carbon source energy in the influent water, which can be fully carried out under anoxic conditions. Denitrification, removing ammonia nitrogen and reducing total nitrogen.

Specifically, in this embodiment, the anaerobic zone 22 includes a suspended spherical filler 221 and an anaerobic vent pipe (not shown in the figure), and the anaerobic vent pipe is used to discharge air. The anaerobic zone 22 is connected to the The first sludge return system is connected to increase the sludge concentration in the anaerobic zone 22, improve the phosphorus treatment effect of the anaerobic zone 22, and reduce phosphorus discharge.

Specifically, in this embodiment, the filter cloth filtering area 5 includes a filter cloth 501 and a backwashing system (not shown in the figure). Among them, the effluent of the vertical flow sedimentation zone 4 passes through the filter cloth filter zone 5, and the suspended solids are adsorbed on the outside of the filter cloth 501 through the filter cloth 501, which can effectively reduce the concentration of suspended solids. The filtration period is long, the cleaning interval is long, and the cleaning duration is short. The cleaning of the filter cloth 201 can be carried out in batches, and the cleaning efficiency is high.

Specifically, in this embodiment, the clean water area 6 temporarily stores the amount of water used for backwashing the filter cloth 501 in the filter cloth filter area 5, and the effluent from the filter cloth filter area 5 flows into the clean water area by itself

Specifically, in this embodiment, the disinfection area 7 includes an ultraviolet sterilizer 701 . The effluent of the clean water area 6 flows into the ultraviolet sterilizer 701 for sterilization treatment, and after the effluent meets the requirements of the fecal large intestine and bacteria, it is discharged through the general water outlet of the equipment up to the standard.

Specifically, in this embodiment, a device periphery 9 is also included, which is used to surround the outer side of the entire device and play a role of fixing and isolation.

The utility model can be used for rural domestic sewage treatment, urban-rural integrated domestic sewage treatment, urban residential sewage treatment, medical wastewater treatment, and has a wide range of applications. 18918-2002) Grade A standard, stable water effluent; the equipment is easy to install and can be used for underground, above-ground or semi-underground; the movable door in the equipment room is flexible and can be placed on the side wall or the top plate for easy installation ; Low energy consumption, low operating cost, can expand the scope of application.

The above-mentioned embodiments only represent several embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as limiting the scope of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for this utility model shall be subject to the appended claims.

Claims (9)

1. a sewage treatment equipment for suspended biofilm and depth filtration, is characterized in that, comprises inclined pipe sedimentation zone, pre-anoxic zone, anaerobic zone, anoxic zone, contact oxidation zone, vertical flow sedimentation zone, Filter cloth filtration area, clean water area, ultraviolet disinfection area and equipment room, water enters from the main water inlet and passes through the inclined tube sedimentation area, anoxic area, contact oxidation area, vertical flow sedimentation area, filter cloth filtration area, clean water area and ultraviolet Water is discharged from the disinfection zone, and the contact oxidation zone includes a suspended filler, a microporous aeration system, and a dark aeration main pipe connected to the microporous aeration system. 2 . The sewage treatment equipment for combined use of suspended biofilm and deep filtration according to claim 1 , wherein the inclined tube sedimentation area comprises a water inlet and water distribution system, which is arranged on one side of the water inlet and water distribution system. 3 . The inclined pipe packing, the sludge discharge system located on the lower side of the inclined pipe packing, the water outlet system located on the upper side of the inclined pipe sedimentation area, and the first venting pipe. 3. The sewage treatment equipment combined with suspended biofilm and deep filtration according to claim 1, wherein the anoxic zone comprises a first nitrifying solution return system, a first sludge return system and a The second vent tube on the upper side of the anoxic zone. 4 . The sewage treatment equipment combined with suspended biofilm and deep filtration according to claim 1 , wherein the vertical flow sedimentation zone comprises a water inlet system connected to the contact oxidation zone, which is located in the vertical flow sedimentation zone. 5 . The sludge storage hopper on the lower side of the vertical flow sedimentation zone, the central water inlet pipe arranged in the middle of the vertical flow sedimentation zone, the vent pipe arranged on the upper side of the vertical flow sedimentation zone, the second nitrification liquid return system, the second Sludge return system and effluent system. 5 . The sewage treatment equipment for combined use of suspended biofilm and deep filtration according to claim 1 , wherein the filter cloth filter area comprises a filter cloth and a backwash system. 6 . 6 . The sewage treatment equipment for combined use of suspended biofilm and deep filtration according to claim 1 , wherein the disinfection area comprises an ultraviolet sterilizer. 7 . 7 . The sewage treatment equipment combined with suspended biofilm and depth filtration according to claim 1 , wherein the dark aeration main pipe is connected to the microporous aeration system through an electric valve. 8 . 8 . The sewage treatment equipment for combined use of suspended biofilm and deep filtration according to claim 3 , wherein the pre-anoxic zone is connected to the first nitrification solution return system and the first sludge return system at the same time. 9 . , the upper end of the pre-hypoxic zone is provided with a pre-hypoxic venting tube. 9 . The sewage treatment equipment combined with suspended biofilm and deep filtration according to claim 4 , wherein the anaerobic zone comprises a suspended spherical filler and an anaerobic vent pipe, and the anaerobic zone and the The first sludge return system is connected.

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