Eutrophic sewage treatment equipment
The utility model belongs to the technical field of sewage treatment device, concretely relates to eutrophic sewage treatment device.
In the aquaculture industry, the used tail water is always an important pollution source of water body pollution, the tail water discharge amount of the aquaculture industry is large, and the eutrophication condition is serious, wherein the main pollutants are as follows: organic matters such as residual feed, excrement, plankton metabolites and the like, excrement of fish after absorbing nitrogen and ammonia nitrogen substances which are not degraded by consumed feed cause tail water eutrophication, and direct discharge causes pollution to a water body.
The method for treating eutrophic sewage in the prior art mainly adopts mechanical filtration and microbial treatment, namely, insoluble substances are removed by a physical method, and then the sewage is further treated by microbes, but because the tail water discharge amount of the industries such as aquaculture and the like is large, the capacity of a pond is basically the capacity of one water changing, and the microbial treatment needs a long time, so that a large enough container is needed for containing the sewage for the microbial treatment, the occupied area is increased, the cost is greatly increased, and the wide-range popularization is difficult.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an eutrophic sewage treatment device which can solve the problems.
The utility model adopts the following technical scheme:
a eutrophic sewage treatment device comprises a separation tank, a purification section and a waste removal pipe, wherein the separation tank comprises a water inlet pipe, a water guide plate, an aerator and a fan, the water guide plate is fixed on one side wall of the separation tank, a plurality of grooves vertical to the horizontal plane are formed in the water guide plate, the water outlet end of the water inlet pipe faces the water guide plate, the air outlet of the aerator is positioned at the bottom of the separation tank and continuously outputs micro-nano bubbles to the water to separate insoluble substances from the water body in the sewage, the insoluble substances float on the water surface along with the bubbles, and an air outlet belt is arranged on one side wall of the separation tank and communicated with the fans and blows floating slag on the liquid surface to the purification section; the purification section is close to the separation tank and purifies the separated scum, the purification section comprises an anaerobic tank, an MBBR reaction tank, a sedimentation zone and a guide plate, the guide plate is positioned above the purification section and is an inclined ramp, the lower end of the guide plate is positioned above the anaerobic tank, and the scum blown out from the separation tank enters the anaerobic tank along the guide plate and is purified by passing through the MBBR reaction tank and the sedimentation tank in sequence; the waste removing pipe is a pipeline for communicating the separation tank with the outside, a plurality of waste removing pipes are arranged in the waste removing pipes, the filter screen is a disc formed by two grid plates, and the two grid plates are filled with zeolite.
Furthermore, the aerator is communicated with the air pipe, the air pipe provides air required by the aerator, and the air in the air pipe is mixed with ozone, so that the disinfection effect can be achieved.
Furthermore, an air outlet is further arranged, and the normal outflow of air flow is guaranteed.
Further, still be provided with the active carbon filter screen on the air outlet for the stink that produces in the filtering reaction avoids ozone to spill over simultaneously.
The utility model discloses at least, following technological effect has:
(1) impurity and partial organic matter in with sewage are come out through the air supporting separation fast separation, pollute the light part and can flow through fast, pollute the heavy part and handle in equipment for a long time, and not all water are all stayed equipment, consequently do not need very big volume to hold sewage.
(2) The separation treatment has good purification effect, the eutrophic inorganic matters dissolved in the water can be quickly treated by the molecular sieve, and the insoluble matters can be treated by microorganisms in the purification section.
(3) Compact structure, integration degree is high, easy to assemble and use.
(4) The gas of the aeration device contains ozone, and the water body can be disinfected.
The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
In the drawings:
fig. 1 schematically shows a structural diagram of a side view angle of the present invention;
fig. 2 schematically shows a structural schematic view of a top view angle of the present invention;
wherein the figures include the following reference numerals:
11-a water inlet pipe, 12-a water guide plate, 13-an aerator, 14-an air pipe, 15-a fan, 16-an air outlet belt, 21-an anaerobic tank, 22-an MBBR reaction tank, 23-a settling zone, 24-a water outlet, 25-a guide plate, 31-a waste removing pipe, 32-a filter screen and 33-a water valve.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure; unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application; as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Spatially relative terms, such as "above … …," "above … …," "above … …, above," "overlying" and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures; it will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures.
Fig. 1-2 show a eutrophic sewage treatment device, which can be used in the field such as aquaculture, and the structure of the device comprises a separation tank, a purification section and a waste removal pipe 31, wherein sewage is separated in the separation tank through micro-nano bubbles, solid-phase precipitates such as residual baits in the sewage float on the water surface along with the bubbles and are separated into the purification section through a fan 15 at the top of the separation tank, the residual pollutants in the sewage are mainly ammonia nitride dissolved in the water, and the ammonia nitride is removed through a filter screen 32 in the waste removal pipe 31, so that the water does not need to be completely stored in the device, and only the separated part with heavier pollution is stored, thereby greatly reducing the volume of the device.
The separation tank comprises a water inlet pipe 11, a water guide plate 12, an aerator 13 and a fan 15, wherein the water guide plate 12 is fixed on one side wall of the separation tank, a plurality of grooves vertical to the horizontal plane are formed in the water guide plate 12, the water outlet end of the water inlet pipe 11 faces the water guide plate 12, sewage entering the equipment from the water inlet pipe 11 acts on the water guide plate 12 firstly and flows into the separation tank gently along the grooves in the water guide plate 12, and as the water flow of the water inlet pipe 11 directly acts on the side wall of the separation tank instead of acting on the liquid level, the separated liquid cannot be disturbed when water enters; the aerator 13 is communicated with the air pipe 14, the aerator 13 receives the air in the air pipe 14 and continuously outputs micro-nano bubbles into water, the micro-nano bubbles can be adhered to the surfaces of organic matters and impurities in the process of slowly rising and wrap the micro-nano bubbles to form floccules, the floccules can float to the surface of the liquid, more impurities or micro-nano bubbles can be adhered in the floating process, the volume of the floccules is continuously increased, and finally a layer of floating slag is formed on the surface of the liquid; as shown in fig. 2, an air outlet belt 16 is arranged on one side wall of the separation tank far from the purification section, the air outlet belt 16 is communicated with a plurality of fans 15, the air outlet belt 16 is strip-shaped, the air outlet direction faces the separation tank, when in use, scum on the liquid level is blown to the purification section, so that sewage is separated, and ammonia nitride dissolved in water cannot be separated through bubbles, so that the ammonia nitride enters a waste removal pipe 31 communicated with the separation tank; in addition, the surface opposite to the fan 15 is provided with an air outlet, so that the normal flow of air flow is ensured.
It should be noted that: the gas in the air pipe 14 is also mixed with ozone, so that the effect of disinfection can be achieved, and an active carbon filter screen is arranged on the air outlet and used for filtering the ozone which is not fully reacted.
Except that the waste pipe 31 is a pipeline for communicating the separation tank with the outside, a plurality of waste pipes are arranged, and the parts of the waste pipes 31 extending out of the equipment are provided with water valves 33, so that one or more water valves 33 can be opened according to actual conditions during use, and the operation is convenient; the plurality of filter screens are arranged in the waste removing pipe 31, the filter screen 32 is a disc formed by two grid plates, zeolite is filled in the two grid plates, the zeolite can adsorb ammonia nitride in water, and impurities which are not separated in the water can also be filtered when passing through gaps of the zeolite, so that the sewage treatment quality is ensured.
The scum separated by the separation tank can be blown to the purification section by a fan, the purification section comprises an anaerobic tank 21, an MBBR reaction tank 22, a settling zone 23 and a guide plate 25, the guide plate 25 is a ramp arranged at the top of the purification section, the lower end of the guide plate 25 is positioned above the anaerobic tank 21, the scum can fall on the guide plate 25 and enter the anaerobic tank 21 along the guide plate 25, so that the scum is introduced into the anaerobic tank and cannot fall into other parts, the scum in a period of time after the reaction in the anaerobic tank 21 can overflow to the MBBR reaction tank 22, MBBR fillers are placed in the MBBR reaction tank 22, the scum is treated by microorganisms, the MBBR reaction tank 22 is larger than the volume of the anaerobic tank 21, the scum can react for a longer time in the MBBR reaction tank 22, supernatant in the MBBR reaction tank 22 can overflow from a partition plate between the MBBR reaction tank 22 and the settling tank and enter the settling tank, of course, the heights of the MBBR reaction tank 22 and the settling tank partition plate are lower than the heights of the MBBR reaction tank 22 and the anaerobic, the water outlet 24 is positioned at the upper middle part of the sedimentation tank, and the supernatant in the sedimentation tank is led out to finish the scum treatment after the sewage is separated.
In the present embodiment, the aeration device, the blower, the zeolite, and the MBBR filler are all well-established prior art and can be purchased directly, and are not described in detail herein.
In a preferred embodiment, the aeration device is a cavitation aerator.