CN112850897A - Organic wastewater treatment system - Google Patents

Abstract

The embodiment of the invention provides an organic wastewater treatment system, which relates to the technical field of wastewater treatment and comprises a containing device, a spraying device and a treatment device, wherein the containing device is used for containing wastewater, the spraying device is communicated with the containing device, the spraying device is used for spraying the wastewater in the containing device onto the treatment device, the treatment device is positioned above the containing device, and the treatment device is used for performing biochemical treatment on the wastewater and enabling the treated wastewater to fall into the containing device. The organic wastewater treatment system can continuously and circularly remove the ammonia nitrogen compounds in the wastewater, and finally completely remove the ammonia nitrogen compounds in the wastewater, thereby realizing zero-pollution discharge of the wastewater.

Description

Organic wastewater treatment system

Technical Field

The invention relates to the technical field of wastewater treatment, in particular to an organic wastewater treatment system.

Background

At present, the amount of monomers is larger and larger in intensive and large-scale development of breeding enterprises. In a conventional farm, ammonia nitrogen compounds are dissolved in wastewater discharged from a livestock and poultry house, and if the wastewater is not treated, the ammonia nitrogen compounds in the wastewater pollute the surrounding environment.

Disclosure of Invention

The object of the present invention is to provide an organic wastewater treatment system which can effectively improve the aforementioned technical problems.

The embodiment of the invention is realized by the following steps:

in a first aspect, the present invention provides an organic wastewater treatment system, including a container, a spraying device and a treatment device, wherein the container is used for containing wastewater, the spraying device is communicated with the container, the spraying device is used for spraying wastewater in the container onto the treatment device, the treatment device is located above the container, and the treatment device is used for performing biochemical treatment on the wastewater and allowing the treated wastewater to fall into the container.

In an alternative embodiment, the treatment device comprises a biological treatment membrane and a biological filter bed, the biological filter bed is arranged between the biological treatment membrane and the accommodating device, the biological treatment membrane is used for performing biochemical treatment on the wastewater and guiding the wastewater to drop onto the biological filter bed, and the biological filter bed is used for performing biochemical treatment on the dropped wastewater again and enabling the wastewater to drop into the accommodating device.

In an alternative embodiment, the number of the biological treatment membranes is multiple, the biological treatment membranes are arranged side by side at intervals, and a channel for the wastewater to flow through is formed between any two adjacent biological treatment membranes.

In an optional embodiment, the spraying device comprises a first spraying piece and a second spraying piece, the input end of the first spraying piece and the input end of the second spraying piece are both communicated with the accommodating device, and the output end of the first spraying piece and the output end of the second spraying piece are respectively sprayed towards the biological treatment membrane and the biological filter bed.

In an alternative embodiment, the output end of the first spray member is positioned above the biological treatment membrane and the output end of the second spray member is positioned between the biological treatment membrane and the biological filter bed.

In an alternative embodiment, the containing means comprises a sedimentation basin for depositing sludge in the wastewater, the input end of the second spray member being in communication with the sedimentation basin.

In an alternative embodiment, the holding device further comprises an aeration tank for receiving wastewater flowing from the outside and mixing oxygen with the wastewater, the aeration tank is arranged at a distance from the sedimentation tank, and the wastewater in the aeration tank is used for overflowing into the sedimentation tank.

In an alternative embodiment, the organic wastewater treatment system further comprises a blower for blowing air toward the aeration tank.

In an optional embodiment, the accommodating device further comprises a conversion pool, the conversion pool and the sedimentation pool are isolated from each other, and the input end of the first spraying piece is communicated with the conversion pool.

In an optional embodiment, the organic wastewater treatment system further comprises an exhaust fan, wherein the suction end of the exhaust fan is communicated with the conversion pool, and the exhaust fan is used for pumping out air in the conversion pool.

The beneficial effects of the embodiment of the invention include, for example:

the embodiment of the invention provides an organic wastewater treatment system which comprises a containing device, a spraying device and a treatment device, wherein the containing device can contain wastewater discharged from a wastewater tank, the spraying device is communicated with the containing device, the spraying device can spray the wastewater in the containing device onto the treatment device, the treatment device can carry out nitrification and denitrification treatment on the sprayed wastewater, the wastewater after nitrification and denitrification can release nitrogen, and the content of ammonia nitrogen compounds in the wastewater after the nitrogen is released is reduced, so that the pollution of the ammonia nitrogen compounds to the surrounding environment can be reduced. Moreover, because the processing apparatus is located the top of accommodate device, like this, the waste water after the effect of nitrifying and denitrification can fall into to accommodate device again, then is sprayed on processing apparatus by spray set circulation again. Therefore, ammonia nitrogen compounds in the wastewater can be continuously and circularly removed, and finally, the ammonia nitrogen compounds in the wastewater are removed, so that zero-pollution discharge of the wastewater is realized.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural diagram of an organic wastewater treatment system according to an embodiment of the present invention.

Icon: 1-an organic wastewater treatment system; 11-a containment device; 111-a sedimentation tank; 112-an aeration tank; 113-a conversion pool; 12-a spraying device; 121-a first spray member; 1211 — a first injection hole; 122-a second spray; 1221-a second jet orifice; 13-a processing device; 131-a biological treatment membrane; 132-a biofilter bed; 14-a blower; 15-an exhaust fan; 2-a wastewater pond.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the related art, places such as farms, industrial plants and the like can discharge a large amount of organic wastewater in the working and production process, the organic wastewater contains ammonia nitrogen compounds, and if the organic wastewater is directly discharged to the external environment, the ammonia nitrogen compounds in the organic wastewater can pollute the environment.

Based on this, referring to fig. 1, the present embodiment provides an organic wastewater treatment system 1, and the organic wastewater treatment system 1 can remove ammonia nitrogen compounds in organic wastewater to realize zero pollution discharge of organic wastewater.

Specifically, this organic waste water processing system 1 includes accommodate device 11, spray set 12 and processing apparatus 13, accommodate device 11 can hold the waste water that discharges out from wastewater disposal basin 2, spray set 12 communicates with accommodate device 11, spray set 12 can be with the waste water in the accommodate device 11 spray to processing apparatus 13 on, processing apparatus 13 can carry out nitration and denitrification to the waste water that sprays, the waste water through nitration and denitrification can release nitrogen gas, the ammonia nitrogen compound content in the waste water after releasing nitrogen gas reduces, can reduce the pollution of ammonia nitrogen compound to the surrounding environment like this.

Moreover, because the treatment device 13 is located above the containing device 11, the wastewater after nitrification and denitrification falls into the containing device 11 again, and then is circularly sprayed on the treatment device 13 by the spraying device 12. Therefore, the ammonia nitrogen compounds in the wastewater can be continuously and circularly removed, and finally, the ammonia nitrogen compounds in the wastewater are thoroughly removed, so that zero-pollution discharge of the wastewater is realized.

The nitrification and denitrification treatment for removing ammonia nitrogen compounds in the wastewater described above is one of the biochemical treatments. In practical applications, different kinds of biochemical treatment can be performed for different pollutants. For example, biochemical treatment for removing phosphorus can be performed for scale substances in wastewater. Alternatively, biochemical treatment for removing antibiotics may be performed for the antibiotics in the wastewater.

Referring to fig. 1, in the present embodiment, the processing device 13 includes a biological processing membrane 131 and a biological filter bed 132, and the biological filter bed 132 is disposed between the biological processing membrane 131 and the accommodating device 11.

In this embodiment, the biological treatment membrane 131 and the biological filter bed 132 can perform nitrification and denitrification treatment on the sprayed wastewater. The wastewater sprayed to the biological treatment membrane 131 is nitrified and denitrified by the biological treatment membrane 131 and then falls into the biological filter bed 132, and the wastewater falling into the biological filter bed 132 can be nitrified and denitrified for the second time, so that the ammonia nitrogen compounds in the wastewater can be removed as much as possible.

In addition, it should be noted that the biological filter bed 132 is provided with a plurality of through holes, and the wastewater after nitrification and denitrification of the biological filter bed 132 falls into the accommodating device 11 again through the through holes, and then is sprayed onto the biological treatment membrane 131 or the biological filter bed 132 again, so that the wastewater is treated repeatedly in this way, and ammonia nitrogen compounds in the wastewater are completely removed.

In the present embodiment, heterotrophic nitrification and aerobic denitrification bacteria are attached to the biological treatment membrane 131 and the biological filter bed 132, and the heterotrophic nitrification and aerobic denitrification bacteria can perform the aforementioned nitrification and denitrification on the wastewater.

It will be appreciated that a significant amount of heat is generated during the nitrification and denitrification of the heterotrophic nitrification and aerobic denitrification bacteria, which increases the rate of evaporation of the wastewater in the holding means 11. That is, the wastewater subjected to nitrification and denitrification is continuously evaporated after falling into the accommodating device 11, thereby realizing zero pollutant discharge.

In the case of performing another biochemical treatment, the heterotrophic nitrification/aerobic denitrification bacteria attached to the biological treatment membrane 131 may be replaced with other types of bacteria.

Referring to fig. 1, specifically, in the present embodiment, the number of the biological treatment membranes 131 is multiple, the biological treatment membranes 131 are arranged side by side at intervals, and a channel for wastewater to flow through is formed between any two adjacent biological treatment membranes 131.

It is understood that in this embodiment, the biological treatment membrane 131 not only can perform nitrification and denitrification on the wastewater, but also the biological treatment membrane 131 has a flow guiding function, and the wastewater attached to the biological treatment membrane 131 can flow along the extending direction of the biological treatment membrane 131, so that the wastewater can more accurately fall onto the biological filter bed 132.

In this embodiment, the wastewater flows in the channel between the adjacent two biological treatment membranes 131, so that the wastewater is prevented from splashing in different directions.

In this embodiment, the plurality of biological treatment membranes 131 are arranged side by side at intervals to form a waterfall structure, and the sprayed wastewater flows downwards from different channels at the same time, so that the plurality of biological treatment membranes 131 can simultaneously nitrify and denitrify a large amount of wastewater, thereby effectively improving the treatment efficiency.

In addition, referring to fig. 1, in the present embodiment, the length direction of the bio-filter bed 132 is parallel to the parallel direction of the plurality of bio-treatment membranes 131. Therefore, different parts of the biological filter bed 132 can receive wastewater flowing out from different channels, and different parts of the biological filter bed 132 can simultaneously carry out nitrification and denitrification treatment on a large amount of wastewater, thereby effectively improving the treatment efficiency.

Referring to fig. 1, in the present embodiment, the spraying device 12 includes a first spraying member 121 and a second spraying member 122, and an input end of the first spraying member 121 and an input end of the second spraying member 122 are both communicated with the accommodating device 11. In this embodiment, the output ends of the first and second showers 121 and 122 are showered toward the bio-treatment film 131 and the bio-filter bed 132, respectively.

Referring to fig. 1, in the embodiment, the output end of the first spraying member 121 is a tubular structure, the length direction of the output end of the first spraying member 121 is parallel to the parallel direction of the plurality of biological treatment membranes 131, the output end of the first spraying member 121 is provided with a plurality of first injection holes 1211, and the plurality of first injection holes 1211 are distributed at intervals along the length direction of the output end of the first spraying member 121, so that the plurality of first injection holes 1211 can spray wastewater at the same time, the spraying efficiency is high, and the sprayed wastewater can fall onto different biological treatment membranes 131, thereby facilitating the subsequent biological treatment membranes 131 to simultaneously nitrify and denitrify the wastewater.

Similarly, in this embodiment, the output end of the second spraying member 122 is also in a tubular structure, the length direction of the output end of the second spraying member 122 is parallel to the length direction of the biological filter bed 132, the output end of the second spraying member 122 is provided with a plurality of second spraying holes 1221, and the plurality of second spraying holes 1221 are distributed at intervals along the length direction of the output end of the second spraying member 122, so that the plurality of second spraying holes 1221 can spray out wastewater at the same time, the spraying efficiency is high, and the sprayed wastewater can fall into different parts of the biological filter bed 132, thereby facilitating simultaneous nitrification and denitrification treatment of the wastewater at different parts of the subsequent biological filter bed 132.

Referring to fig. 1, in the embodiment, the output end of the first spraying member 121 is located above the biological treatment membrane 131, so that the wastewater sprayed from the output end of the first spraying member 121 can directly fall onto the biological treatment membrane 131, and the wastewater flows downwards from the top of the biological treatment membrane 131, so that the retention time of the wastewater on the biological treatment membrane 131 can be prolonged, and the wastewater can be more fully nitrified and re-nitrified.

Referring to fig. 1, in the present embodiment, the output end of the second spraying member 122 is located between the biological treatment membrane 131 and the biological filter bed 132, so that the wastewater sprayed from the output end of the second spraying member 122 can directly fall onto the biological filter bed 132.

Alternatively, in practical use, a water pump may be installed in the first and second showers 121 and 122 to facilitate the extraction of waste water from the container 11.

Referring to fig. 1, in the present embodiment, the accommodating device 11 includes a sedimentation tank 111, the wastewater is accommodated in the sedimentation tank 111, then the wastewater can be settled in the sedimentation tank 111, and sludge in the wastewater can be settled to the bottom of the sedimentation tank 111.

In this embodiment, the input end of the second spraying member 122 is communicated with the sedimentation tank 111, and after the wastewater is settled in the sedimentation tank 111, the second spraying member 122 can spray the wastewater in the sedimentation tank 111 onto the biological filter bed 132.

Referring to fig. 1, in the embodiment, the accommodating apparatus 11 further includes an aeration tank 112, the wastewater discharged from the wastewater tank 2 enters the aeration tank 112 first, the wastewater reacts with oxygen in the aeration tank 112, and ammonia nitrogen compounds in the wastewater form nitrate nitrogen under the action of the oxygen, so that the nitrate nitrogen is more stable and less volatile, and thus the subsequent nitrification and denitrification treatment of the nitrate nitrogen by the biological treatment membrane 131 and the biological filter bed 132 can be facilitated.

In this embodiment, the aeration tank 112 and the sedimentation tank 111 are provided at a distance from each other. It can be understood that the wastewater enters the aeration tank 112 first, the ammonia nitrogen compounds in the wastewater react with the oxygen in the aeration tank 112 to form nitrate nitrogen with higher stability, the wastewater overflows from the aeration tank 112 as the amount of the wastewater increases gradually, the overflowed wastewater enters the sedimentation tank 111, and the wastewater is sprayed onto the biological filter bed 132 by the second spraying member 122 after being precipitated in the sedimentation tank 111.

Referring to fig. 1, in the present embodiment, the organic wastewater treatment system 1 further includes a blower 14, and the blower 14 blows air into the aeration tank 112, so that the amount of oxygen in the aeration tank 112 can be increased, and the oxygen entering the aeration tank 112 can continuously react with the ammonia nitrogen compounds in the wastewater to continuously form nitrate nitrogen with higher stability.

Referring to fig. 1, in the present embodiment, the air outlet pipe of the blower 14 extends into the bottom of the aeration tank 112, and the air flowing out from the air outlet pipe flows upward from the bottom of the aeration tank 112, so that the time of the air in the aeration tank 112 is increased, more oxygen is dissolved in the wastewater, and more ammonia nitrogen compounds in the wastewater are converted into nitrate nitrogen.

In this embodiment, plastic fillers, wools, etc. are laid in the aeration tank 112, and after the air is blown into the aeration tank 112 by the blower 14, the plastic fillers and wools can cut the bubbles in the water body, so as to increase the number of bubbles, thereby dissolving more oxygen and converting more ammonia nitrogen compounds in the wastewater into nitrate nitrogen.

Referring to fig. 1, in the present embodiment, the accommodating device 11 further includes a conversion tank 113, the conversion tank 113 and the sedimentation tank 111 are isolated from each other, and an input end of the first spraying member 121 is communicated with the conversion tank 113.

It can be understood that a part of the wastewater falling from the biological filter bed 132 falls into the conversion tank 113, and then the first spraying member 121 can spray the wastewater flowing into the conversion tank 113 onto the biological treatment membrane 131 again, and then perform nitrification and denitrification for a plurality of times, so as to completely remove the ammonia nitrogen compounds in the wastewater, thereby realizing zero pollution discharge of the wastewater.

Referring to fig. 1, in the present embodiment, the organic wastewater treatment system 1 further includes an exhaust fan 15, and a suction end of the exhaust fan 15 is communicated with the conversion tank 113. It will be appreciated that the biological treatment membrane 131 and the biological filter bed 132 generate a large amount of nitrogen during the nitrification and denitrification processes, and the exhaust fan 15 can extract the nitrogen. Furthermore, the exhaust fan 15 can also draw out moisture above the conversion tank 113, so that a large amount of heat generated by the heterotrophic nitrification and aerobic denitrification bacteria during the metabolic process can evaporate the wastewater more quickly.

In summary, the present embodiment provides the working principle of the organic wastewater treatment system 1:

the wastewater discharged from the wastewater tank 2 enters the aeration tank 112, the blower 14 blows a large amount of air into the aeration tank 112, oxygen is dissolved in the wastewater, and the oxygen reacts with ammonia nitrogen compounds in the wastewater to form nitrate nitrogen with high stability, so that the volatility is reduced.

As the amount of wastewater in the aeration tank 112 gradually increases, the wastewater overflows from the aeration tank 112 and flows into the sedimentation tank 111, the wastewater is precipitated in the sedimentation tank 111, sludge in the wastewater is deposited at the bottom of the sedimentation tank 111, the second spraying member 122 sprays the wastewater in the sedimentation tank 111 onto the biological filter bed 132, heterotrophic nitrification and aerobic denitrification bacteria on the biological filter bed 132 nitrify and denitrify the wastewater, and then the wastewater falls into the aeration tank 112, the sedimentation tank 111 and the conversion tank 113 again.

The wastewater falling into the aeration tank 112 and the sedimentation tank 111 is again subjected to the aforementioned processes of forming nitrate nitrogen and sedimentation, the wastewater falling into the conversion tank 113 is sprayed onto the biological treatment membrane 131 by the first spraying member 121, and then the biological treatment membrane 131 nitrifies and denitrifies the wastewater, falls into the biological filter bed 132, and falls into the aeration tank 112, the sedimentation tank 111, and the conversion tank 113, so that the ammonia nitrogen compounds in the wastewater are completely removed, and the heat generated by the metabolism of heterotrophic nitrification and aerobic denitrifying bacteria accelerates the evaporation of the wastewater during the nitrification and denitrification, and the exhaust fan 15 extracts moisture and nitrogen, and the wastewater is finally discharged in the form of gas to the external environment without pollution.

The above description is only exemplary of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The organic wastewater treatment system is characterized by comprising a containing device (11), a spraying device (12) and a treatment device (13), wherein the containing device (11) is used for containing wastewater, the spraying device (12) is communicated with the containing device (11), the spraying device (12) is used for spraying the wastewater in the containing device (11) onto the treatment device (13), the treatment device (13) is positioned above the containing device (11), and the treatment device (13) is used for performing biochemical treatment on the wastewater and enabling the treated wastewater to fall into the containing device (11).

2. The organic wastewater treatment system according to claim 1, wherein the treatment device (13) comprises a biological treatment membrane (131) and a biological filter bed (132), the biological filter bed (132) is disposed between the biological treatment membrane (131) and the containing device (11), the biological treatment membrane (131) is used for performing biochemical treatment on the wastewater and guiding the wastewater to drop onto the biological filter bed (132), and the biological filter bed (132) is used for performing biochemical treatment again on the dropped wastewater and dropping the wastewater into the containing device (11).

3. The organic wastewater treatment system according to claim 2, wherein the number of the biological treatment membranes (131) is plural, a plurality of the biological treatment membranes (131) are arranged side by side at intervals, and a channel for the wastewater to flow through is formed between any two adjacent biological treatment membranes (131).

4. The organic wastewater treatment system according to claim 2, wherein the spray device (12) comprises a first spray member (121) and a second spray member (122), an input end of the first spray member (121) and an input end of the second spray member (122) are both communicated with the containing device (11), and an output end of the first spray member (121) and an output end of the second spray member (122) are sprayed toward the biological treatment membrane (131) and the biological filter bed (132), respectively.

5. The organic wastewater treatment system according to claim 4, wherein the output end of the first spray member (121) is positioned above the biological treatment membrane (131), and the output end of the second spray member (122) is positioned between the biological treatment membrane (131) and the biological filter bed (132).

6. The organic wastewater treatment system according to claim 4, wherein the containing device (11) comprises a sedimentation basin (111) for depositing sludge in the wastewater, and the input end of the second spray member (122) is communicated with the sedimentation basin (111).

7. The organic wastewater treatment system according to claim 6, wherein the container (11) further comprises an aeration tank (112), the aeration tank (112) is used for receiving wastewater flowing from the outside and fusing oxygen with the wastewater, the aeration tank (112) is arranged at a distance from the sedimentation tank (111), and the wastewater in the aeration tank (112) is used for overflowing into the sedimentation tank (111).

8. The organic wastewater treatment system according to claim 7, wherein the organic wastewater treatment system (1) further comprises a blower (14), the blower (14) being configured to blow air towards the aeration tank (112).

9. The organic wastewater treatment system according to claim 6, wherein the container (11) further comprises a conversion tank (113), the conversion tank (113) and the sedimentation tank (111) are isolated from each other, and an input end of the first shower member (121) communicates with the conversion tank (113).

10. The organic wastewater treatment system according to claim 9, wherein the organic wastewater treatment system (1) further comprises an exhaust fan (15), wherein a suction end of the exhaust fan (15) is communicated with the conversion tank (113), and the exhaust fan (15) is used for exhausting air in the conversion tank (113).

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