CN218810963U - High ammonia nitrogen's industrial waste water treatment equipment - Google Patents

Abstract

The utility model discloses an industrial wastewater treatment equipment of high ammonia nitrogen, get into after MOF reactor pretreatment including waste water and get rid of organic pollutant and partial ammonia nitrogen in the foamless aeration MABR reactor, the water of the output in the foamless aeration MABR reactor enters into the denitrogenation reactor, get rid of the ammonia nitrogen once more, reduce COD simultaneously, the water that produces in the denitrogenation reactor enters into behind the high-efficient membrane MBR bioreactor, enters into little algae reactor, then filters green alga through the MF membrane again, the water that the MF membrane produced discharges or the retrieval and utilization. The device can high-efficiently produce hydroxyl free radicals through the MOF reactor with the porous framework, can break bond, recombine, degrade the organic matter in the waste water, can improve the biodegradability of waste water greatly to have the function of nitrifying denitrification and anaerobic ammonia oxidation through no bubble aeration MABR reactor, can effectively shorten the dwell time of high difficulty waste water, reduce the energy consumption.

Description

High ammonia nitrogen's industrial waste water treatment equipment

Technical Field

The utility model relates to a sewage treatment's technical field especially relates to a high ammonia nitrogen's industrial waste water treatment equipment.

Background

With the rapid development of economy in China, the ammonia nitrogen pollution source is increasingly wide, and the discharge amount is continuously increased. In the industries of petroleum refining, petrochemical industry, medicine, garbage treatment, livestock breeding, industrial product manufacturing and the like, a large amount of ammonia nitrogen wastewater with various concentrations can be generated. Ammonia nitrogen is a nutrient in water, and if the ammonia nitrogen is not properly treated, eutrophication of a water body can be caused, and the ammonia nitrogen is also one of main oxygen-consuming pollutants.

In petrochemical, coal chemical and carbon dioxide capture industries, amine liquid solvents such as MEA, DEA and MDEA are widely used, and high-concentration wastewater generated in the process is a difficult point for treating the industries.

In the production processes of spinning chemical fibers, pharmacy, chemical synthesis, wet manufacturing of filtering membranes and the like, a large amount of organic solvent N, N-Dimethylformamide (DMF) is used, and the molecular formula is as follows: C3H7NO; n, N-Dimethylacetamide (DMAC), molecular formula: CH3C (O) N (CH 3) 2; and generates a large amount of waste water containing DMF and DMAC. DMF and DMAC are colorless transparent liquids. It is a chemical raw material with wide application and a good solvent with wide application. Except halogenated hydrocarbon, the solvent can be mixed with water and most organic solvents at will, has good dissolving capacity and chemical stability for various organic compounds and inorganic compounds, and is a polar solvent which is commonly used as an aprotic solvent. DMF and DMAC in the wastewater have high concentration and have bacteriostatic action, and a large amount of ammonia nitrogen is generated after the wastewater is decomposed, so that the wastewater is difficult to biochemically treat and is high-difficulty industrial wastewater.

The concentration of DMF and DMAC in the waste water is from 0.1% to 20%. In addition, the wastewater also contains other miscible substances, the high-concentration single solvent can be recovered by adopting technologies such as rectification, chloroform extraction and the like, but the cost is high, the secondary pollution of VOC is easy to generate, and the recovery method is greatly limited.

The method generally adopted at present is to treat the sewage as high-concentration sewage. However, dimethylformamide and dimethylacetamide have strong polarity, chemical stability and biotoxicity, and are industrial wastewater difficult to biochemically treat.

At present, biochemical method, supercritical water oxidation method, photocatalytic oxidation, physicochemical method, chemical method and other methods are mostly adopted for treating waste water containing DMF and DMAC at home and abroad.

In the biochemical method, DMF and DMAC belong to strong polar solvents which are mutually soluble with water, the biological decomposition is difficult, and the biological toxicity has an inhibition effect on the biological treatment process, so that the growth of activated sludge is slow, the biochemical period is long, a large amount of ammonia nitrogen is generated, and the treatment standard is difficult to reach in the time of several months.

The supercritical water oxidation process is too costly and running expensive; the photocatalytic oxidation method also has problems in reactor design and immobilization of the catalyst; the physicochemical method and the chemical method generally only use single-component wastewater and are difficult to reach the treatment standard, and the treatment cost is very high.

Therefore, the above methods have certain problems, and because the DMF and DMAC wastewater has serious environmental pollution and the ammonia nitrogen standard of wastewater discharge is improved, the production enterprises are under great environmental pressure, and there is an urgent need to find an effective harmless treatment method with low treatment cost and a corresponding hardware equipment system.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing the high ammonia nitrogen industrial wastewater treatment equipment.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a high ammonia nitrogen industrial wastewater treatment device comprises an MOF reactor, a bubble-free aeration MABR reactor, a denitrification reactor, a high-efficiency membrane MBR bioreactor, a microalgae reactor and an MF membrane;

after being pretreated by an MOF (metal organic framework) reactor, wastewater enters the bubble-free aeration MABR reactor to remove organic pollutants and part of ammonia nitrogen, and a water body produced in the bubble-free aeration MABR reactor enters the denitrification reactor to remove the ammonia nitrogen again and reduce COD (chemical oxygen demand);

and the water body generated in the denitrification reactor enters the high-efficiency membrane MBR bioreactor, then enters the microalgae reactor, and then is filtered by the MF membrane, and the water body generated by the MF membrane is discharged or recycled.

As a further description of the above technical solution, the sludge in the high efficiency membrane MBR bioreactor is refluxed into the non-bubble aeration MABR reactor through a pipeline.

As a further description of the above technical solution, the water generated by the MF membrane flows back to the MBR membrane reactor through a pipeline.

As a further description of the above technical solution, the MOF reactor has a porous framework.

As a further description of the above technical solution, the MABR membrane in the bubbleless aeration MABR reactor is a bubbleless aeration membrane, and the MABR membrane is a hollow fiber membrane or a flat sheet membrane.

As further description of the technical scheme, the microalgae reactor is a photobioreactor consisting of a plurality of groups of transparent glass tubes.

As further description of the above technical solution, the microalgae reactor is placed horizontally or vertically.

As a further description of the above technical solution, the MF membrane is a hollow fiber membrane or a flat sheet membrane.

As further described in the technical scheme, the high-efficiency membrane MBR bioreactor is a reactor integrating jet aeration, deep well aeration and fluidized bed MBR.

As further description of the technical scheme, the high-efficiency membrane MBR bioreactor is a combined tank body or a square structure.

The utility model discloses following beneficial effect has:

1. the utility model discloses a MOF reactor with porous skeleton can produce the hydroxyl free radical high-efficiently, can break bond, reorganization, degradation to the organic matter in the waste water, can improve the biodegradability of waste water greatly.

2. The utility model discloses a no bubble aeration MABR reactor has the function of nitrifying denitrification and anaerobic ammonium oxidation, can effectively shorten the dwell time of high difficulty waste water, improves the utilization efficiency of oxygen transmission efficiency and oxygen to reduce the energy consumption greatly.

3. The utility model discloses a high-efficient membrane MBR bioreactor collects efflux aeration, deep well aeration, fluidized bed, MBR in an organic whole, and aeration efficiency is high, and the energy consumption only is 1/4 of traditional aeration, and the mud piece-rate system is unique, and excess sludge only is 1/10 of traditional technology, and the treatment effeciency is higher, and treatment cost is lower.

4. The utility model discloses a little algae reactor utilizes the pollutant in the sunshine waste water to carry out photosynthesis and produces green alga and purify water quality, and the energy 90% of system comes from the sun, and surplus algae biology can recycle with MF membrane separation circulation in the processing procedure, really realizes the green circulation of zero release and industrial water.

Drawings

FIG. 1 is a schematic diagram of the high ammonia nitrogen industrial wastewater treatment equipment provided by the utility model.

Illustration of the drawings:

1. a MOF reactor; 2. a bubble-free aeration MABR reactor; 3. a nitrogen removal reactor; 4. a high efficiency membrane MBR bioreactor; 5. a microalgae reactor; 6. an MF membrane.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the present invention provides an embodiment: a high ammonia nitrogen industrial wastewater treatment device comprises an MOF reactor 1, a bubble-free aeration MABR reactor 2, a nitrogen removal reactor 3, a high-efficiency membrane MBR bioreactor 4, a microalgae reactor 5 and an MF membrane 6;

after wastewater is pretreated by an MOF reactor 1, in the pretreatment process, the MOF generates hydroxyl radicals in the wastewater, the hydroxyl radicals enable DMF, DMAC or other organic matter molecules in the wastewater to be broken, recombined and degraded, the biodegradability of the wastewater containing the DMF and the DMAC is improved, the subsequent biochemical reaction is easy to carry out, the primarily treated wastewater enters a non-bubble aeration MABR reactor 2 to further degrade organic pollutants, the wastewater can simultaneously carry out nitration, denitrification and anaerobic ammonia oxidation reactions in the non-bubble aeration MABR reactor 2 to remove the organic pollutants and part of ammonia nitrogen, a water body produced in the non-bubble aeration MABR reactor 2 enters a nitrogen removal reactor 3 to remove a large amount of ammonia nitrogen generated when the DMF and the DMAC in the wastewater are broken, recombined and explained in the non-bubble aeration MABR reactor 2, the influence of the ammonia nitrogen on the biological treatment is reduced, and the COD is reduced; the water body generated in the denitrification reactor 3 enters the high-efficiency membrane MBR bioreactor 4, COD and ammonia nitrogen in the wastewater can be further removed, then the water body enters the microalgae reactor 5 again, the microalgae reactor utilizes sunlight to carry out photosynthesis on organic pollution, ammonia nitrogen and phosphorus in the wastewater, the synthesized green algae achieves the effect of further removing COD, ammonia nitrogen and phosphorus in the wastewater, so that higher water quality is obtained, then the green algae is filtered through the MF membrane 6, so that aged green algae is collected and separated, the separated green algae can be used as organic fertilizer and fuel, and the water body generated by the MF membrane 6 is discharged or recycled.

In some embodiments, the sludge in the high efficiency membrane MBR bioreactor 4 is recycled by being returned to the bubbleless aeration MABR reactor 2 through a pipeline.

In some embodiments, the water produced by the MF membrane 6 flows back to the high efficiency membrane MBR bioreactor 4 through a pipeline, and when the water filtered by the MF membrane and containing ammonia and nitrogen with too high concentration can pass through the high efficiency membrane MBR bioreactor 4 again to remove COD and ammonia nitrogen in the water.

In some embodiments, the MOF reactor 1 has a porous framework, and is a porous framework material made of polymetal such as iron carbon, and has a micro-electrolysis function, and compared with a general micro-electrolysis filler, the MOF reactor does not need to adjust the PH value during use, has a small loss amount, and has a long service life.

In some embodiments, the MABR membrane in the bubbleless aeration MABR reactor 2 is a bubbleless aeration membrane with a function of preferentially permeating oxygen, the MABR membrane is a hollow fiber membrane or a flat plate membrane, air enters an inner cavity of the membrane, oxygen permeates through the membrane wall to form an aerobic biological membrane on the outer surface of the membrane, anaerobic reaction is performed outside the aerobic biological membrane, the MABR membrane forms infinite short-range nitrification and denitrification reactions and anaerobic ammonia oxidation reactions in sewage, the oxygen utilization rate is 5-8 times that of the traditional aeration, and energy consumption is greatly saved.

In some embodiments, the microalgae reactor 5 is a photobioreactor composed of multiple groups of transparent glass tubes, uses sunlight as energy, and utilizes organic pollutants, ammonia nitrogen, phosphorus and carbon dioxide in wastewater to perform photosynthesis to synthesize green algae so as to further remove COD, ammonia nitrogen and phosphorus in wastewater, thereby obtaining higher water quality, and is a technology with the lowest energy consumption for sewage treatment at present, 90% of energy consumption comes from the sun, and external energy only needs one water supply pump, so that the overall energy consumption is reduced.

In some embodiments, the microalgae reactor 5 is placed horizontally or vertically, and different placement positions can be selected according to the actual use space.

In some embodiments, the MF membrane 6 is a hollow fiber membrane or a flat sheet membrane, and different types of the MF membrane 6 can be selected according to actual needs, and the MF membrane 6 separates algae grown and aged in the microalgae reactor 5, and the separated algae can be used as waste for soil remediation or as biomass fuel.

In some embodiments, the high efficiency membrane MBR bioreactor 4 is a reactor with integrated jet aeration, deep well aeration, and fluidized bed MBR, which can save energy by more than 75% compared to the conventional MBR reactor, and can achieve a sludge reduction of 90% compared to the conventional aeration process.

In some embodiments, the high efficiency membrane MBR bioreactor 4 is a composite tank or a square structure, which can be selected according to actual needs.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions on some technical features, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims (10)

1. The utility model provides a high ammonia nitrogen's industrial waste water treatment equipment which characterized in that: comprises an MOF reactor, a bubble-free aeration MABR reactor, a nitrogen removal reactor, a high-efficiency membrane MBR bioreactor, a microalgae reactor and an MF membrane;

the MOF reactor is connected with the bubbleless aeration MABR reactor and is used for pretreating wastewater and removing organic pollutants and partial ammonia nitrogen;

the denitrification reactor is connected with the high-efficiency membrane MBR bioreactor, the high-efficiency membrane MBR bioreactor is connected with the microalgae reactor, the microalgae reactor is communicated with the MF membrane and is used for filtering green algae, and water generated by the MF membrane is discharged or recycled.

2. The high ammonia nitrogen industrial wastewater treatment equipment according to claim 1, characterized in that: and the sludge in the high-efficiency membrane MBR bioreactor flows back into the bubble-free aeration MABR reactor through a pipeline.

3. The high ammonia nitrogen industrial wastewater treatment equipment according to claim 1, characterized in that: and the water generated by the MF membrane flows back into the high-efficiency membrane MBR bioreactor through a pipeline.

4. The high ammonia nitrogen industrial wastewater treatment equipment according to claim 1, characterized in that: the MOF reactor has a porous framework.

5. The equipment for treating high ammonia nitrogen industrial wastewater according to claim 1, characterized in that: the MABR membrane in the bubble-free aeration MABR reactor is a bubble-free aeration membrane, and the MABR membrane is a hollow fiber membrane or a flat plate membrane.

6. The equipment for treating high ammonia nitrogen industrial wastewater according to claim 1, characterized in that: the microalgae reactor is a photobioreactor consisting of a plurality of groups of transparent glass tubes.

7. The high ammonia nitrogen industrial wastewater treatment equipment according to claim 1, characterized in that: the microalgae reactor is horizontally or vertically arranged.

8. The equipment for treating high ammonia nitrogen industrial wastewater according to claim 1, characterized in that: the MF membrane is a hollow fiber membrane or a flat membrane.

9. The high ammonia nitrogen industrial wastewater treatment equipment according to claim 1, characterized in that: the high-efficiency membrane MBR bioreactor is a reactor integrating jet aeration, deep well aeration and fluidized bed MBR.

10. The high ammonia nitrogen industrial wastewater treatment equipment according to claim 1, characterized in that: the high-efficiency membrane MBR bioreactor is a combined tank body or a square structure.

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