Rapid oxidation digestion system for sewage

Abstract

The utility model relates to the technical field of environmental protection equipment, and discloses a rapid sewage oxidation and digestion system which comprises a sewage tank, a mixer, a mixed impact oxidation reactor, an oxidation tower and a clear water tank, a sewage pump is arranged between the sewage tank and the mixer, a water inlet of the sewage pump is communicated with a water outlet of the sewage tank, and a water outlet of the sewage tank is communicated with a water outlet of the oxidation tower. A water outlet of the sewage pump is communicated with a first inlet of the mixer, an outlet of the mixer is communicated with a water inlet of the mixed impact oxidation reactor, a water inlet of the oxidation tower is communicated with a water outlet of the mixed impact oxidation reactor, and the clear water tank is communicated with the oxidation tower; the device further comprises a multi-ion generator and a circulating water pump, the multi-ion generator is communicated with the mixer, and the circulating water pump is communicated with the oxidation tower and the mixer. The sewage treatment device is suitable for treating sewage containing toxic and harmful organic matters, can quickly digest toxic and harmful matters in the sewage, and solves the problem of secondary pollution of the sewage.

Description

TECHNICAL FIELD

[0001] The utility model relates to environmental protection equipment technical field, especially a kind of sewage rapid oxidation digestion system. BACKGROUND

[0002] After biological treatment such as anaerobic and aeration, biodegradable COD has been digested, and the remaining is organic pollutants difficult to biodegrade, which still contains toxic and harmful substances, such as toxic organic matter, harmful bacteria and antibiotics, etc. It cannot be directly discharged and needs to be treated deeply.

[0003] Currently, chemical oxidation method is often used in industry, such as Fenton method. This method needs to adjust the pH value of sewage to about 3 first, then add ferrous sulfate and hydrogen peroxide for oxidation, and add alkali for neutralization after oxidation. The problem of this method is that a large amount of chemicals are needed, chemical sludge difficult to dewater is produced after treatment, a large area of land is needed for treatment process, investment is large, and treatment cost is high. Although anaerobic, aeration and Fenton method can degrade COD, toxic and harmful substances such as toxic organic matter and antibiotics in water cannot be degraded. A large amount of toxic and harmful substances exist in sewage, such as antibiotics in aquaculture wastewater and hospital medical wastewater, toxic organic matter in pesticide, pharmaceutical and other fine chemical wastewater. These substances have not been effectively degraded and treated, and are easy to cause secondary pollution. Once discharged into river water, it is more difficult to treat. SUMMARY

[0004] The main purpose of the utility model is to solve the above-mentioned technical problems to some extent, and a sewage rapid oxidation digestion system is provided, which is suitable for sewage treatment containing toxic and harmful organic matter, can quickly digest toxic and harmful substances in sewage, and solves the problem of secondary pollution of sewage.

[0005] The application provides a sewage rapid oxidation digestion system, which comprises a sewage tank, a mixer, a mixed impact oxidation reactor, an oxidation tower and a clean water tank. A sewage pump is arranged between the sewage tank and the mixer. The water inlet of the sewage pump is communicated with the water outlet of the sewage tank. The water outlet of the sewage pump is communicated with the first inlet of the mixer. The outlet of the mixer is communicated with the water inlet of the mixed impact oxidation reactor. The water inlet of the oxidation tower is communicated with the water outlet of the mixed impact oxidation reactor. The water inlet of the clean water tank is communicated with the first water outlet of the oxidation tower.

[0006] A multi-ion generator is further included, an outlet of the multi-ion generator being communicated with the second inlet of the mixer, and a circulating water pump is further included, a water inlet of the circulating water pump being communicated with the second water outlet of the oxidation tower, and a water outlet of the circulating water pump being communicated with the first inlet of the mixer.

[0007] In some embodiments, the mixed impingement oxidation reactor comprises at least five groups of mixed reaction units, and each group of the mixed reaction units is connected in series.

[0008] In some embodiments, the mixed reaction unit comprises two mixers arranged in parallel.

[0009] In some embodiments, the oxidation tower is provided with a filler.

[0010] In some embodiments, the water inlet of the oxidation tower is arranged at the bottom thereof, the first water outlet of the oxidation tower is arranged at the top thereof, and the second water outlet is arranged at the side thereof.

[0011] In some embodiments, the water inlet of the clean water tank is arranged at the top thereof.

[0012] In some embodiments, the water outlet of the sewage tank is arranged at the bottom thereof.

[0013] Compared with the prior art, the above technical scheme provided by the embodiments of the present application has the following advantages:

[0014] The utility model is suitable for sewage treatment containing toxic and harmful organic matter, wherein the multi-ion generator can generate high-concentration ozone, peroxide radical, hydroxyl radical and other strong oxidizing substances, and can oxidize the sewage at high concentration; the mixed impingement oxidation reactor can mix and impinge the sewage, so that the sewage is dispersed into fine components and the oxidation reaction activity is improved; the sewage entering the oxidation tower slowly reacts through the filler layer, so that the unreacted oxidizing substances continue to be oxidized and degraded, and finally the organic matter is decomposed into carbon dioxide and water; thereby the toxic and harmful substances in the sewage are rapidly degraded, the secondary pollution problem of the sewage is solved, and the treatment cost is low. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the flow chart of the sewage rapid oxidation and degradation system of the utility model.

[0016] REFERENCE NUMERALS:

[0017] 1-sewage tank;2-mixer;3-mixed impingement oxidation reactor;301-mixed reaction unit;4-oxidation tower;5-clean water tank;6-sewage pump;7-filler;8-multi-ion generator;9-circulating water pump. DETAILED DESCRIPTION

[0018] In order to have a clearer understanding of the technical features, objectives and effects of the present application, the specific embodiments of the present application will be described in detail with reference to the drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "upper", "lower", "left", "right", "vertical", "horizontal", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail" and the like are based on the directions or positional relationships shown in the drawings, constructed and operated in a particular direction, and are only for the convenience of describing the present technical solution, and do not indicate that the indicated device or element must have a particular direction, therefore, it cannot be understood as a limitation on the present application.

[0019] It should also be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting", "fixing", "setting" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements. When an element is referred to as "on" or "below" another element, the element can be "directly" or "indirectly" above the other element, or there can be one or more intermediate elements. The terms "first", "second", "third" and the like are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features, therefore, the features with "first", "second", "third" and the like can be explicitly or implicitly included one or more of the features. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0020] In the following description, specific details are presented such as specific system structures, techniques, etc. in order to thoroughly understand the embodiments of the present application, but those skilled in the art should understand that the present application can also be implemented in other embodiments without these specific details. In other cases, detailed description of well-known systems, devices, circuits and methods is omitted to avoid unnecessary details that hinder the description of the present application.

[0021] As Figure 1As shown, the sewage rapid oxidation and digestion system comprises a sewage tank 1, a mixer 2, a mixed impact oxidation reactor 3, an oxidation tower 4 and a clean water tank 5, a sewage pump 6 is arranged between the sewage tank 1 and the mixer 2, a water inlet of the sewage pump 6 is communicated with a water outlet arranged at the bottom of the sewage tank 1, a water outlet of the sewage pump 6 is communicated with a first inlet of the mixer 2, an outlet of the mixer 2 is communicated with a water inlet of the mixed impact oxidation reactor 3, the water inlet arranged at the bottom of the oxidation tower 4 is communicated with a water outlet of the mixed impact oxidation reactor 3, the sewage can be mixed by the mixed impact oxidation reactor 3, the mixed impact can make the sewage disperse into fine components, and the reactivity of the oxidizing substance is improved; the water inlet arranged at the top of the clean water tank 5 is communicated with a first water outlet arranged at the top of the oxidation tower 4, and a regular stainless steel filler 7 is arranged in the oxidation tower 4, the sewage entering the oxidation tower 4 slowly reacts through the filler 7 layer, the oxidizing substance not participating in the reaction continues to carry out the oxidation and degradation reaction, and finally the organic matter is decomposed into carbon dioxide and water.

[0022] Further, the sewage rapid oxidation and digestion system further comprises a multi-ion generator 8 and a circulating water pump 9, an outlet of the multi-ion generator 8 is communicated with a second inlet of the mixer 2, a water inlet of the circulating water pump 9 is communicated with a second water outlet arranged at the side of the oxidation tower 4, and a water outlet of the circulating water pump 9 is communicated with the first inlet of the mixer 2, the multi-ion generator 8 can generate high-concentration ozone, peroxide radicals, hydroxyl radicals and other strong oxidizing substances, and the sewage can be oxidized at high concentration; the circulating water pump 9 can pump part of the water in the oxidation tower 4 to the inlet of the mixer 2 and mix with the raw water.

[0023] In work, the COD of the sewage to be treated in the sewage tank 1 is 121 mg / L, the sewage in the sewage tank 1 is sent to the mixer 2 through the sewage pump 6, and the multi-ion generator 8 injects high-concentration ozone, peroxide radicals, hydroxyl radicals and other strong oxidizing substances into the mixer 2, so that the sewage and the strong oxidizing substances are continuously mixed.

[0024] Subsequently, the sewage mixed with the strong oxidizing substances enters the mixed impact reaction unit after passing through the mixer 2, the sewage is divided into two streams in the mixed impact oxidation reactor 3, and is mixed in the pipeline mixer 2 again, and is synthesized into a stream, and the impact effect is generated during the stream synthesis, and then the stream is divided into two streams again, and is mixed in the pipeline mixer 2 again, and is synthesized into a stream and is mixed by impact, and after repeated for many times, the stream leaves the mixed impact oxidation reactor 3.

[0025] The sewage leaving the mixed impingement oxidation reactor 3 enters the oxidation tower 4 from the water inlet at the bottom of the oxidation tower 4, and the sewage entering the oxidation tower 4 slowly passes through the layer of fillers 7 for slow reaction, so that the oxidizing substances not participating in the reaction continue to perform the oxidation degradation reaction, and finally the organic matters are decomposed into carbon dioxide and water, at this time the COD of the sewage is reduced to 50 mg / L, and according to the needs, part of the water can be pumped from the second water outlet at the side of the oxidation tower 4 to the first inlet of the mixer 2 by the circulating water pump 9 to be mixed with the raw water, and finally the hydrolysis completed sewage is injected into the clean water tank 5 from the first water outlet at the top of the oxidation tower 4.

[0026] The system is suitable for sewage treatment containing toxic and harmful organic matters, can quickly decompose toxic and harmful substances in the sewage, solve the problem of secondary pollution of the sewage, and can treat the refractory sewage with high content of organic pollutants or high salt content, and the treatment cost is low.

[0027] It is worth noting that the circulating amount of the circulating water pump 9 can be controlled during pumping, and the higher the COD of the raw water, the greater the circulating amount.

[0028] For example, the mixed impingement oxidation reactor 3 in the embodiment includes at least five groups of mixed reaction units 301, and each group of mixed reaction units 301 is connected in series, and the mixed reaction unit 301 includes two mixers 2 arranged in parallel; through the structure, the sewage is divided into two streams, mixed in the pipe mixer 2 respectively, and then synthesized into one stream, and the impingement effect is generated during the stream synthesis, and then the sewage is divided into two streams again, mixed in the pipe mixer 2, and then synthesized into one stream and impinged, and after five times of repetition, the sewage leaves the mixed impingement oxidation reactor 3 and enters the oxidation tower 4.

[0029] It is worth noting that the more the number of groups of mixed reaction units arranged in the mixed impingement oxidation reactor 3, the less the sewage circulating amount needs.

[0030] The above only describes the preferred embodiments of the present application, and it should be pointed out that for ordinary skilled persons in the technical field, without departing from the technical principles of the present application, a number of improvements and replacements can be made, and these improvements and replacements should also be regarded as the protection range of the present application.

Claims

1. A system for rapid oxidation and digestion of sewage, characterized by, The sewage tank is provided with a sewage pump between the sewage tank and the mixer, the water inlet of the sewage pump is communicated with the water outlet of the sewage tank, the water outlet of the sewage pump is communicated with the first inlet of the mixer, the outlet of the mixer is communicated with the water inlet of the mixed impingement oxidation reactor, the water inlet of the oxidation tower is communicated with the water outlet of the mixed impingement oxidation reactor, and the water inlet of the clean water tank is communicated with the first water outlet of the oxidation tower. The multi-ion generator is further provided with an outlet communicated with the second inlet of the mixer, and the circulating water pump is further provided with a water inlet communicated with the second water outlet of the oxidation tower and a water outlet communicated with the first inlet of the mixer.

2. The rapid oxidation and digestion system for sewage according to claim 1, characterized in that, The mixed impingement oxidation reactor comprises at least five groups of mixed reaction units, and each group of mixed reaction units is connected in series.

3. The rapid oxidation and digestion system for sewage according to claim 2, characterized in that, The mixed reaction unit comprises two mixers arranged in parallel.

4. The rapid oxidation and digestion system for sewage of claim 1, wherein, The oxidation tower is provided with a filler.

5. The rapid oxidation and digestion system for sewage of claim 1, wherein, The water inlet of the oxidation tower is arranged at the bottom of the oxidation tower, the first water outlet of the oxidation tower is arranged at the top of the oxidation tower, and the second water outlet is arranged at the side of the oxidation tower.

6. The rapid oxidation and digestion system for sewage of claim 1, wherein, The water inlet of the clean water tank is arranged at the top of the clean water tank.

7. The rapid oxidation and digestion system for sewage of claim 1, wherein, The water outlet of the sewage tank is arranged at the bottom of the sewage tank.

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