CN111592187A - Treatment process and treatment system for garbage reverse osmosis membrane concentrated solution - Google Patents

Abstract

The invention discloses a treatment process and a treatment system for a reverse osmosis membrane concentrated solution of garbage, which comprises the following steps: s1: respectively pretreating the anoxic tank and the aerobic tank; the pretreatment process enables the COD concentration of the liquid in the anoxic tank to be basically consistent with the concentration of the garbage reverse osmosis membrane concentrated solution, and the DO of the liquid in the aerobic tank is 3.5-4.5 mg/L; s2: conveying the garbage reverse osmosis membrane concentrated solution to a pretreated anoxic tank for nitration reaction; s3: conveying the garbage reverse osmosis membrane concentrated solution treated in the step S2 to a pretreated aerobic tank for denitrification reaction; s4: conveying the garbage reverse osmosis membrane concentrated solution treated in the step S3 to an adsorption tank containing activated carbon for stirring and adsorption; s5: and (4) conveying the garbage reverse osmosis membrane concentrated solution treated in the step (S4) to a filtering device for filtering and dewatering, conveying the filtered mixed solution to a sedimentation tank for reaction and sedimentation, and conveying the sediment to the filtering device for filtering and dewatering, wherein the ammonia nitrogen removal rate is better.

Description

Treatment process and treatment system for garbage reverse osmosis membrane concentrated solution

Technical Field

The invention relates to the technical field of garbage concentrated solution treatment, in particular to a treatment process and a treatment system for a garbage reverse osmosis membrane concentrated solution.

Background

The garbage concentrated solution is high-concentration wastewater generated in the process of long-term storage and burying of garbage, and has the characteristics of complex components, multiple pollutant types, unstable water quality, high organic matter concentration and poor biodegradability. At present, many countries mainly adopt a membrane bioreactor and reverse osmosis combined process to treat garbage concentrated solution, a large amount of garbage reverse osmosis membrane concentrated solution is inevitably generated after the treatment is finished, compared with the garbage concentrated solution, the garbage reverse osmosis membrane concentrated solution has the characteristics of higher COD and salt concentration and lower biodegradability, and the related requirements are difficult to achieve by adopting a single conventional combined process.

At present, the main treatment technologies for the reverse osmosis membrane concentrated solution of garbage include distillation concentration, recharging, evaporation, advanced oxidation and other means, wherein the economic cost of the distillation concentration is high; the recharge technology has the potential risk of polluting underground water, in addition, the high-concentration garbage reverse osmosis membrane concentrated solution easily causes the accumulation of organic matters in recharge soil, and a recharge treatment system can cause the system to be damaged and is not easy to repair when exceeding the limit value of a certain organic pollution load; equipment corrosion is easily caused by evaporating corrosive pollutants in the garbage reverse osmosis membrane concentrated solution; the advanced oxidation technology has harsh technical conditions and higher cost, and pollutants such as ammonia nitrogen, nitrate nitrogen and the like still remain in the effluent of the treated reverse osmosis membrane concentrated solution of the garbage, and the eutrophication of the water body can still be caused after the discharge. Therefore, new solutions are required for treating the waste reverse osmosis membrane concentrate, and the development of efficient and low-energy-consumption waste reverse osmosis membrane concentrate treatment methods is urgent.

Disclosure of Invention

The invention mainly aims to provide a treatment process and a treatment system for a reverse osmosis membrane concentrated solution of garbage, and aims to solve the technical problems of high cost and secondary pollution in the conventional concentrated solution treatment process.

In order to realize the aim, the invention provides a treatment process of a reverse osmosis membrane concentrated solution of garbage, which comprises the following steps:

s1: respectively pretreating the anoxic tank and the aerobic tank; the pretreatment process enables the COD concentration of the liquid in the anoxic tank to be basically consistent with the concentration of the garbage reverse osmosis membrane concentrated solution, and the DO of the liquid in the aerobic tank is 3.5-4.5 mg/L;

s2: conveying the garbage reverse osmosis membrane concentrated solution to a pretreated anoxic tank for nitration reaction;

s3: conveying the garbage reverse osmosis membrane concentrated solution treated in the step S2 to a pretreated aerobic tank for denitrification reaction;

s4: conveying the garbage reverse osmosis membrane concentrated solution treated in the step S3 to an adsorption tank containing activated carbon for stirring and adsorption;

s5: and (4) conveying the garbage reverse osmosis membrane concentrated solution treated in the step (S4) to a filtering device for filtering and dewatering, conveying the filtered mixed solution to a sedimentation tank for reaction and sedimentation, and conveying the sediment to the filtering device for filtering and dewatering.

Preferably, the step S1 includes:

s11: inoculating nitrobacteria into the anoxic tank and performing biofilm formation, wherein the inoculation concentration of the nitrobacteria is 20-30 g/L;

s12: inoculating denitrifying bacteria onto a biological belt, introducing a garbage reverse osmosis membrane concentrated solution into a container, stopping feeding liquid after the container is filled with the denitrifying bacteria, performing closed aeration activation on the denitrifying bacteria for 2-4h, placing the biological belt into an aerobic tank after the closed aeration activation is performed, and then continuously introducing the garbage reverse osmosis membrane concentrated solution into the aerobic tank for a domestication process to ensure that DO of liquid in the aerobic tank is 3.5-4.5 mg/L.

Preferably, the step S11 further includes: and after the membrane is hung, intermittently introducing a garbage reverse osmosis membrane concentrated solution into the anoxic tank, introducing the garbage reverse osmosis membrane concentrated solution into the anoxic tank once when the COD concentration rises to 1000mg/L, and staying the garbage reverse osmosis membrane concentrated solution in the anoxic tank for 2-5d until the COD concentration is basically consistent with the concentration of the garbage reverse osmosis membrane concentrated solution.

Preferably, in step S5, the solid obtained after filtration and dehydration by the filtration equipment is conveyed to a carbon regeneration equipment for high-temperature calcination to obtain regenerated activated carbon, and the regenerated activated carbon is conveyed to the adsorption tank for cyclic adsorption of the garbage reverse osmosis membrane concentrated solution.

Preferably, the step S2 is preceded by the step S0: and conveying the garbage reverse osmosis membrane concentrated solution to a regulating tank to regulate the water quality and the water quantity of the garbage reverse osmosis membrane concentrated solution, and conveying the garbage reverse osmosis membrane concentrated solution to the pretreated anoxic tank after the water quality and the water quantity of the garbage reverse osmosis membrane concentrated solution are stable.

Preferably, in the step S5, at least one of sodium carbonate, PAC, and sodium hypochlorite is added to the sedimentation tank.

Preferably, in the step S4, sulfuric acid is introduced into the adsorption tank, and the Ph value in the adsorption tank is controlled to be 2.5 to 4.

Preferably, in the step S11, the pH of the waste reverse osmosis membrane concentrated solution introduced into the anoxic tank is 6 to 8.

Preferably, in the step S2, the conductivity of the garbage reverse osmosis membrane concentrated solution introduced into the anoxic tank is less than 45000 mus/cm.

In addition, the invention also provides a garbage reverse osmosis membrane concentrated solution treatment system, which comprises a regulating tank, an anoxic tank, an aerobic tank, an adsorption tank, first filtering equipment, a sedimentation tank, second filtering equipment and a water outlet tank which are sequentially connected;

the sedimentation tank is connected with the water outlet tank, the first filtering device and the second filtering device are both connected with the carbon regeneration device, the adsorption tank is connected with a carbon preparation tank, and the carbon regeneration device is connected with the carbon preparation tank;

the glucose tank is connected with the anoxic tank, the sulfuric acid storage tank is connected with the adsorption tank, and the sedimentation tank is connected with a sodium carbonate tank, a PAC tank and a sodium hypochlorite tank.

The treatment process and the treatment system for the garbage reverse osmosis membrane concentrated solution can effectively treat the reverse osmosis membrane garbage reverse osmosis membrane concentrated solution, the activated carbon can adsorb and regenerate the garbage reverse osmosis membrane concentrated solution for recycling, the carbon regeneration capacity is high, the adsorption capacity of the regenerated carbon on pollutants in the garbage reverse osmosis membrane concentrated solution reaches over 90 percent, the recycled activated carbon can greatly save the production cost, and the adsorbed pollutants are thoroughly oxidized in a high-temperature regeneration furnace to completely mineralize the pollutants. When the garbage reverse osmosis membrane concentrated solution treatment system normally operates, the degradation rate of COD can reach more than 98%, the ammonia nitrogen removal rate can reach more than 90%, and the total nitrogen removal rate can reach more than 90%; and the system has strong impact load resistance, can solve the characteristics of complex composition and poor biodegradability of the permeable membrane garbage reverse osmosis membrane concentrated solution, and adds sulfuric acid into active carbon in the garbage reverse osmosis membrane concentrated solution treatment process to enhance the adsorption capacity of the active carbon on macromolecular organic matters, thereby further improving the adsorption effect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a treatment system for a reverse osmosis membrane concentrate of garbage.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				1	Adjusting tank	2	Anoxic pond
3	Glucose tank	4	Aerobic tank
				5	Adsorption tank	6	Carbon preparation pot
7	Sulfuric acid storage tank	8	First filter device
				9	Sedimentation tank	10	Sodium carbonate tank
11	PAC tank	12	Sodium hypochlorite pot
				13	Second filter device	14	Water outlet tank
15	Carbon regeneration equipment

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

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 only a part of the embodiments of the present invention, and not all of the embodiments. 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 if directional indications such as up, down, left, right, front, and rear … … are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship, motion, and the like between the components in a specific posture as shown in the drawings, and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides a treatment process of a reverse osmosis membrane concentrated solution of garbage. The garbage reverse osmosis membrane concentrated solution treatment process is mainly used for purifying garbage reverse osmosis membrane concentrated solution generated by garbage accumulation, the whole tank applied by the garbage reverse osmosis membrane concentrated solution treatment process is high in impact load resistance, the difficulties of complex components and poor biodegradability of the garbage reverse osmosis membrane concentrated solution can be fully solved, an activated carbon regeneration adsorption technology is adopted, pollutants adsorbed by activated carbon in a high-temperature calcination process are thoroughly oxidized, completely mineralized pollutants are achieved, the activated carbon can be recycled, and the treatment cost of the garbage reverse osmosis membrane concentrated solution is greatly reduced.

In an embodiment of the invention, the treatment process of the reverse osmosis membrane concentrated solution of the garbage comprises the following steps:

s1: respectively pretreating the anoxic tank 2 and the aerobic tank 4; the COD concentration of the liquid in the anoxic tank 2 is basically consistent with the concentration of the garbage reverse osmosis membrane concentrated solution in the pretreatment process, and the DO of the liquid in the aerobic tank 4 is 3.5-4.5mg/L in the pretreatment process;

s2: conveying the concentrated solution of the reverse osmosis membrane of the garbage to a pretreated anoxic tank 2 for nitration reaction;

s3: conveying the reverse osmosis membrane concentrated solution of the garbage treated in the step S2 to a pretreated aerobic tank 4 for denitrification reaction;

s4: conveying the garbage reverse osmosis membrane concentrated solution treated in the step S3 to an adsorption tank 5 containing activated carbon for stirring and adsorption;

s5: and (4) conveying the garbage reverse osmosis membrane concentrated solution treated in the step (S4) to a filtering device for filtering and dewatering, conveying the filtered mixed solution to a sedimentation tank 9 for reaction and sedimentation, and conveying the sediment to the filtering device for filtering and dewatering.

Specifically, before the garbage reverse osmosis membrane concentrated solution is treated, the aerobic tank 4 and the anoxic tank 2 need to be respectively pretreated, so that the COD concentration of the liquid in the anoxic tank 2 is basically consistent with the concentration of the garbage reverse osmosis membrane concentrated solution, the basic consistency means that the COD concentration of the liquid in the anoxic tank 2 is equal to the concentration of the garbage reverse osmosis membrane concentrated solution stock solution or the upper and lower difference value of the COD concentration and the concentration of the garbage reverse osmosis membrane concentrated solution stock solution is not more than 30mg/L, and the concentration of the garbage reverse osmosis membrane concentrated solution stock solution means the concentration of the garbage reverse osmosis membrane concentrated solution before being introduced into the, the DO of the liquid in the aerobic tank 4 is 3.5-4.5mg/L in the pretreatment process, so that the operation of microorganism systems in the anoxic tank 2 and the aerobic tank 4 is stable, thereby leading the nitrobacteria in the aerobic tank 4 and the denitrifying bacteria in the anoxic tank 2 to achieve the efficiency and load when the reverse osmosis membrane concentrated solution of the garbage is actually treated; then the garbage reverse osmosis membrane concentrated solution is sequentially treated through the two areas of the aerobic pool 4 and the anoxic pool 2, the degradation oxidation capability of various organic matters in the garbage reverse osmosis membrane concentrated solution can be enhanced, the nitrification and denitrification capability are improved, pollutants such as ammonia nitrogen and the like in the garbage reverse osmosis membrane concentrated solution are treated, the denitrification reaction in the anoxic pool 2 reduces nitrate into gaseous nitrogen to be discharged, the organic matters are degraded into micromolecule organic matters, alkali is generated at the same time, dissolved oxygen in the garbage reverse osmosis membrane concentrated solution is reduced, the alkalinity in the anoxic pool 2 can be partially supplemented into the aerobic pool 4, sewage containing carbon nitrogen with lower concentration enters the aerobic pool 4, microorganisms in the aerobic pool 4 carry out biochemical reaction under the aerobic condition, the micromolecule organic matters are degraded, and a small amount of nitrogen in the garbage reverse osmosis membrane concentrated solution is converted into NO^2-And NO^3-The total time of the concentrated solution of the reverse osmosis membrane of the garbage stays in the anoxic tank 2 and the aerobic tank 4 is 3-5d, aeration is continuously carried out in the aerobic tank 4, and the ratio of gas to water in the aeration process is 3-6:1, preferably 5:1, so that the optimal purification treatment effect of microorganisms on the concentration can be ensured; then conveying the garbage reverse osmosis membrane concentrated solution to an adsorption tank 5 containing activated carbon, wherein the activated carbon adsorbs harmful impurities such as heavy metal, methanol, phenol and the like in the garbage reverse osmosis membrane concentrated solution, and the garbage reverse osmosis membrane concentrated solution after adsorption is further purified; and the filtered liquid is conveyed to a sedimentation tank 9 for sedimentation reaction, impurities and organic matters in the garbage reverse osmosis membrane concentrated solution are further removed, meanwhile, the turbidity and the chromaticity of the garbage reverse osmosis membrane concentrated solution are reduced, the standard discharge can be realized, after the sediment in the sedimentation tank 9 is subjected to dehydration treatment by a filtering device, whether the liquid meets the discharge standard through detection or not is judged, the liquid is discharged to the outside immediately after meeting the discharge standard, which link in the detection process step does not meet the discharge standard needs to be adjusted, and the standard discharge of the garbage reverse osmosis membrane concentrated solution is realized through the treatment process of recycling the garbage reverse osmosis membrane concentrated solution again.

Further, the step S1 includes: s11: inoculating nitrobacteria into the anoxic pond 2 and performing biofilm formation, wherein the inoculation concentration of the nitrobacteria is 20-30 g/L; s12: inoculating denitrifying bacteria onto a biological belt, introducing a garbage reverse osmosis membrane concentrated solution into a container, stopping feeding liquid after the container is filled with the denitrifying bacteria, performing closed aeration activation on the denitrifying bacteria for 2-4h, placing the biological belt into the aerobic tank 4 after the closed aeration activation is performed, and then continuously introducing the garbage reverse osmosis membrane concentrated solution into the aerobic tank 4 for a domestication process to ensure that DO of the liquid in the aerobic tank 4 is 3.5-4.5 mg/L.

Specifically, the pretreatment of the anoxic tank 2 comprises inoculation of microorganisms for biofilm formation, specific nitrifying bacteria can be adopted for inoculation, or nitrifying bacteria can be inoculated from other stably operating anoxic tanks 2, the specific nitrifying bacteria inoculation concentration is 20-30g/l, preferably 25g/l, so that the nitrifying bacteria have stable growth space while the activity of the nitrifying bacteria in sludge in the anoxic tank is high, and the treatment efficiency of ammonia nitrogen and organic matters in the garbage reverse osmosis membrane concentrated solution is improved. The pretreatment of the aerobic tank 4 mainly adopts an inoculation domestication method, firstly, aerobic activated sludge inoculated with denitrifying bacteria is added into a container, the sludge is placed on a biological belt, the microorganisms on the biological belt are subjected to a stuffy aeration activation process, part of microorganisms grow on the biological belt after the stuffy aeration is finished, then the biological belt is placed in the aerobic tank 4 for a domestication process, a garbage reverse osmosis membrane concentrated solution is continuously introduced in the domestication process, an aeration disc controls the aeration quantity in the aerobic tank 4 to be from small to large, finally, the DO value of the liquid in the aerobic tank 4 is controlled to be 3.5-4.5mg/L, a system tends to be stable, the treatment load of the aerobic tank 4 on the garbage reverse osmosis membrane concentrated solution in actual operation is met, the COD of effluent liquid and feed liquid in the aerobic tank 4 is detected in real time in the pretreatment process, and when the difference value of the COD degradation rate of the effluent liquid and the feed liquid is stable, namely the COD degradation rate indicates that the aerobic tank 4 finishes a, the treatment of the garbage reverse osmosis membrane concentrated solution can be started.

Further, the step S11 further includes: and after film hanging, intermittently introducing a garbage reverse osmosis membrane concentrated solution into the anoxic pond 2, introducing the garbage reverse osmosis membrane concentrated solution into the anoxic pond 2 once when the COD concentration rises to 1000mg/L, and staying the garbage reverse osmosis membrane concentrated solution in the anoxic pond 2 for 2-5 days until the COD concentration is basically consistent with the concentration of the garbage reverse osmosis membrane concentrated solution.

Because the concentration of organic matters is higher when the garbage reverse osmosis membrane concentrated solution is introduced into the anoxic tank 2, the garbage reverse osmosis membrane concentrated solution is treated in a staged manner by starting the anoxic tank 2 in a manner of lifting organic load in a staged manner, the garbage reverse osmosis membrane concentrated solution introduced into the anoxic tank 2 is introduced intermittently, the COD concentration in the anoxic tank 2 is increased continuously along with the continuous introduction of the garbage reverse osmosis membrane concentrated solution, and once the COD concentration is increased by 1000mg/l, the garbage reverse osmosis membrane concentrated solution is introduced into the anoxic tank 2 to ensure that microorganisms in the anoxic tank 2 have better degradation effect on the organic matters and ammonia nitrogen removal effect, the microorganisms in the anoxic tank 2 are acclimated by the staged organic matter concentration, the success rate of film hanging can be improved, and after the garbage reverse osmosis membrane concentrated solution stays in the anoxic tank 2 for 2-5 days, the COD concentration in the anoxic tank 2 is consistent with the concentration of the raw garbage reverse osmosis membrane concentrated solution, conveying the garbage reverse osmosis membrane concentrated solution to an aerobic tank 4 for subsequent treatment so as to reduce the treatment load in the aerobic tank 4; microorganisms inoculated in the sludge can be taken from other anoxic tanks 2 which are already in stable operation, specific nitrobacteria can also be directly added into the anoxic tank 2, and COD concentration is detected after the concentration of the garbage reverse osmosis membrane concentrated solution in the anoxic tank 2 is in a lifting stage and is stable, so that the stable operation of a system in the anoxic tank 2 is ensured.

Further, in the step S5, the solid filtered and dehydrated by the filtering device is conveyed to the carbon regeneration device 15 for high temperature calcination to obtain regenerated activated carbon, and the regenerated activated carbon is conveyed to the adsorption tank 5 for cyclic adsorption of the garbage reverse osmosis membrane concentrated solution. Specifically, carry the rubbish reverse osmosis membrane concentrate after the adsorption purification treatment to filtration equipment such as membrane filter press and carry out solid-liquid separation to rubbish reverse osmosis membrane concentrate, the solid after the dehydration is carried to carbon regeneration equipment 15 and is carried out high temperature calcination like high temperature regenerator, specific temperature is about 500 ℃, the solid matter after the calcination has adsorption effect again, carry and carry out impurity adsorption to rubbish reverse osmosis membrane concentrate in adsorption tank 5, activated carbon can use circularly, carbon regeneration capacity is high, regenerated carbon adsorption capacity has more than 90%, the cost can be saved greatly to the powder active carbon of recycling, and the pollutant that is adsorbed by activated carbon is thoroughly oxidized in carbon regeneration equipment 15, accomplish the complete mineralization pollutant, the operation mode is more environmental protection.

Further, the step of S2 is preceded by the step of S0: and (3) conveying the garbage reverse osmosis membrane concentrated solution to an adjusting tank 1 to adjust the water quality and the water quantity of the garbage reverse osmosis membrane concentrated solution, and conveying the garbage reverse osmosis membrane concentrated solution to the pretreated anoxic tank 2 after the water quality and the water quantity of the garbage reverse osmosis membrane concentrated solution are stable. That is, the reverse osmosis membrane concentrate of the present embodiment is further adjusted by the adjusting tank 1 before being delivered to the anoxic tank 2, so as to adjust the water quality and water amount change in the reverse osmosis membrane concentrate, the stable water quality means that the concentration change range of the reverse osmosis membrane concentrate of the garbage is not too large, the reverse osmosis membrane concentrate is diluted in the adjusting tank 1 when the concentration is too large, and the stable water amount reduces the fluctuation of the liquid inlet amount of the reverse osmosis membrane concentrate subsequently entering the anoxic tank 2, and the liquid inlet amount can complete the reaction period of the whole reverse osmosis membrane concentrate treatment process, thereby preventing the concentration or liquid inlet amount load of the reverse osmosis membrane concentrate of the garbage from changing sharply when the reverse osmosis membrane concentrate is treated in the anoxic tank 2, and the reverse osmosis membrane concentrate of the garbage is treated by the adjusting tank 1 in advance, so as to meet the requirement of the existence of microorganisms in the anoxic tank 2 when entering the anoxic tank, improving the purification treatment effect of the reverse osmosis membrane concentrated solution of the garbage

Further, in step S5, at least one of sodium carbonate, PAC, and sodium hypochlorite is added to the sedimentation tank 9.

It can be understood that sodium carbonate, PAC and sodium hypochlorite are added into the sedimentation tank 9, so that pollutants such as salts in the garbage reverse osmosis membrane concentrated solution can be subjected to flocculation reaction with the pollutants to realize sedimentation, and the garbage reverse osmosis membrane concentrated solution is further purified. Sodium carbonate is added into the sedimentation tank 9, so that Ca in the garbage reverse osmosis membrane concentrated solution can be removed²⁺、Mg²⁺And scaling substances are added, so that the problem of scaling and blockage of parts such as pipelines of the sedimentation tank 9 is solved, and the pH value of the reverse osmosis membrane concentrated solution of the garbage can be adjusted to meet the requirement of subsequent standard discharge. After the added PAC is added into the sedimentation tank 9, the garbage reverse osmosis membrane concentrated solution can react with the PAC to produce ALH₂O₆ ³⁺、ALOH₃、[AL₆OH₁₄]⁴⁺、[AL₇OH₁₇]⁴⁺And [ AL₈OH₂₀]⁴⁺And the high-valence polymeric ions play a role in electrical neutralization of the colloid of the reverse osmosis garbage membrane concentrate with negative charges and play a role in compressing a cushion layer to promote the colloid of the reverse osmosis garbage membrane concentrate to be condensed, and ALOH₃In the process of precipitation, small particles in part of the garbage reverse osmosis membrane concentrated solution can be captured to form particles with larger particle size, so that precipitation is generated, and further precipitation and purification of impurities in the garbage reverse osmosis membrane concentrated solution can be promoted. The oxidant sodium hypochlorite added into the sedimentation tank 9 can oxidize a small amount of ammonia nitrogen in the garbage reverse osmosis membrane concentrated solution so as to facilitate the ammonia nitrogen pollutant to react with other components in the sedimentation tank 9 for sedimentation, thereby reducing the possibility of reducing the content of ammonia nitrogen pollutantsThe content of ammonia nitrogen pollutants in the garbage reverse osmosis membrane concentrated solution enables the garbage reverse osmosis membrane concentrated solution to be discharged up to the standard.

Further, in the step S4, sulfuric acid is introduced into the adsorption tank 5, and the Ph value in the adsorption tank 5 is controlled to be 2.5 to 4. So, add the active carbon of sulphuric acid in to adsorption tank 5 and modify, the adsorption effect of modified active carbon to pollutants such as benzene, phenol, because the polarity that adds of sulphuric acid made active carbon changes to make the inside hole of active carbon increase to some extent, consequently be favorable to the absorption to benzene and phenol type material, but should control the pH value in the adsorption tank 5, the pH value is optimum to be 3 in actual production process, prevent that acidity from crossing excessively and destroying the microporous structure in the active carbon structure, reduced the adsorption effect of active carbon on the contrary.

Further, in the step S11, the pH value of the waste reverse osmosis membrane concentrated solution introduced into the anoxic tank 2 is 6 to 8. It can be understood that because the anoxic pond 2 contains biological membranes formed by microorganisms such as nitrobacteria, the biological membranes are sensitive to the pH value of the fed garbage reverse osmosis membrane concentrated solution, so that the pH value of the garbage reverse osmosis membrane concentrated solution is too high and too low, the biological membranes are affected, the biological membranes are peeled off after a period of time, the growth of the microorganisms is affected even, and the treatment effect on ammonia nitrogen in the garbage reverse osmosis membrane concentrated solution is reduced.

Further, in the step S2, the conductivity of the garbage reverse osmosis membrane concentrated solution introduced into the anoxic pond 2 is less than 45000 mus/cm. The measured value of the conductivity reflects the content of total dissolved solids in the garbage reverse osmosis membrane concentrated solution, and the conductivity is normally related to the salt content in the garbage reverse osmosis membrane concentrated solution, so that the conductivity content in the garbage reverse osmosis membrane concentrated solution is controlled to be lower than 45000 mu s/cm, the work load in the anoxic tank 2 is ensured, and the garbage reverse osmosis membrane concentrated solution is diluted and then conveyed to the anoxic tank 2 for treatment when the conductivity is too high.

In addition, the invention also provides a garbage reverse osmosis membrane concentrated solution treatment system, which comprises a regulating tank 1, an anoxic tank 2, an aerobic tank 4, an adsorption tank 5, a first filtering device 8, a sedimentation tank 9, a second filtering device 13 and a water outlet tank 14 which are connected in sequence; the sedimentation tank 9 is connected with the water outlet tank 14, the first filtering device 8 and the second filtering device 13 are both connected with the carbon regeneration device 15, the adsorption tank 5 is connected with the carbon preparation tank 6, and the carbon regeneration device 15 is connected with the carbon preparation tank 6; the glucose tank 3 is connected with the anoxic tank 2, the sulfuric acid storage tank 7 is connected with the adsorption tank 5, and the sedimentation tank 9 is connected with a sodium carbonate tank 10, a PAC tank 11 and a sodium hypochlorite tank 12.

As shown in fig. 1, the reverse osmosis membrane concentrate sequentially passes through a regulating tank 1, an anoxic tank 2, an aerobic tank 4, an adsorption tank 5, a first filtering device 8, a sedimentation tank 9, a second filtering device 13 and a water outlet tank 14, the reverse osmosis membrane concentrate is orderly and efficiently treated and purified to achieve standard discharge, the sedimentation tank 9 is connected with the water outlet tank 14 and used for discharging effluent of the sedimentation tank 9, solid substances generated after filtration and dehydration of the first filtering device 8 and the second filtering device 13 are all conveyed to a carbon regeneration device 15 for high-temperature calcination, and regenerated active carbon after high-temperature calcination is conveyed to a carbon distribution tank 6 to continuously supplement active carbon to the adsorption tank 5 for adsorbing pollutants in the reverse osmosis membrane concentrate. The glucose tank 3 provides carbon source substances into the anoxic tank 2 and provides raw materials for metabolism of microorganisms in the anoxic tank 2; the adsorption tank 5 is also connected with a sulfuric acid storage tank 7 and is used for improving the adsorption effect of the activated carbon on benzene and phenol pollutants in the reverse osmosis membrane concentrated solution of the garbage; a sodium carbonate tank 10, a PAC tank 11 and a sodium hypochlorite tank 12 are connected to the sedimentation tank 9 to further remove contaminants within the sedimentation tank 9.

The technical solutions of the present application are further described in detail with reference to the following specific examples, which should be understood as merely illustrative and not limitative.

Example 1

A treatment process of a reverse osmosis membrane concentrated solution of garbage comprises the following steps:

s1: respectively pretreating the anoxic tank 2 and the aerobic tank 4; the COD concentration of the liquid in the anoxic tank 2 is consistent with the concentration of the garbage reverse osmosis membrane concentrated solution in the pretreatment process, and the DO of the liquid in the aerobic tank 4 is 4mg/L in the pretreatment process;

s11: inoculating nitrobacteria into the anoxic tank 2 and performing biofilm formation, wherein the inoculation concentration of the nitrobacteria is 25g/L, intermittently introducing a garbage reverse osmosis membrane concentrated solution into the anoxic tank 2 after biofilm formation, introducing the garbage reverse osmosis membrane concentrated solution into the anoxic tank 2 once when the COD concentration rises to 1000mg/L, and staying the garbage reverse osmosis membrane concentrated solution in the anoxic tank 2 for 3 days until the COD concentration is consistent with the concentration of the garbage reverse osmosis membrane concentrated solution, wherein the pH value of the garbage reverse osmosis membrane concentrated solution introduced into the anoxic tank 2 is 6.8;

s12: inoculating denitrifying bacteria onto a biological belt, introducing a garbage reverse osmosis membrane concentrated solution into a container, stopping feeding liquid after the container is filled with the denitrifying bacteria, performing closed aeration activation on the denitrifying bacteria, wherein the closed aeration activation time is 3 hours, placing the biological belt into the aerobic tank 4 after the closed aeration activation, and then continuously introducing the garbage reverse osmosis membrane concentrated solution into the aerobic tank 4 for a domestication process to ensure that DO of liquid in the aerobic tank 4 is 4 mg/L;

s0: and (3) conveying the garbage reverse osmosis membrane concentrated solution to an adjusting tank 1 to adjust the water quality and the water quantity of the garbage reverse osmosis membrane concentrated solution, and conveying the garbage reverse osmosis membrane concentrated solution to the pretreated anoxic tank 2 after the water quality and the water quantity of the garbage reverse osmosis membrane concentrated solution are stable.

S2: conveying the garbage reverse osmosis membrane concentrated solution into a pretreated anoxic tank 2 for nitration reaction, wherein the conductivity of the garbage reverse osmosis membrane concentrated solution introduced into the anoxic tank 2 is 42000 mu s/cm;

s3: conveying the reverse osmosis membrane concentrated solution of the garbage treated in the step S2 to a pretreated aerobic tank 4 for denitrification reaction;

s4: conveying the garbage reverse osmosis membrane concentrated solution treated in the step S3 to an adsorption tank 5 containing activated carbon for stirring and adsorption, introducing sulfuric acid into the adsorption tank 5, and controlling the Ph value in the adsorption tank 5 to be 4;

s5: conveying the garbage reverse osmosis membrane concentrated solution treated in the step S4 to a filtering device for filtering and dewatering, conveying the filtered mixed solution to a sedimentation tank 9 for reaction and sedimentation, adding sodium carbonate, PAC and sodium hypochlorite into the sedimentation tank 9, conveying the sediment into the filtering device for filtering and dewatering, conveying the solid filtered and dewatered by the filtering device to a carbon regeneration device 15 for high-temperature calcination to obtain regenerated activated carbon, and conveying the regenerated activated carbon to an adsorption tank 5 for cyclic adsorption of the garbage reverse osmosis membrane concentrated solution.

Comparative example 1

The treatment process of the reverse osmosis membrane concentrated solution of the garbage comprises the following steps:

s0: and (3) conveying the garbage reverse osmosis membrane concentrated solution to an adjusting tank 1 to adjust the water quality and the water quantity of the garbage reverse osmosis membrane concentrated solution, and conveying the garbage reverse osmosis membrane concentrated solution to the pretreated anoxic tank 2 after the water quality and the water quantity of the garbage reverse osmosis membrane concentrated solution are stable.

S2: conveying the garbage reverse osmosis membrane concentrated solution into a pretreated anoxic tank 2 for nitration reaction, wherein the conductivity of the garbage reverse osmosis membrane concentrated solution introduced into the anoxic tank 2 is 42000 mu s/cm;

s3: conveying the reverse osmosis membrane concentrated solution of the garbage treated in the step S2 to a pretreated aerobic tank 4 for denitrification reaction;

s4: conveying the garbage reverse osmosis membrane concentrated solution treated in the step S3 to an adsorption tank 5 containing activated carbon for stirring and adsorption, introducing sulfuric acid into the adsorption tank 5, and controlling the Ph value in the adsorption tank 5 to be 4;

s5: conveying the garbage reverse osmosis membrane concentrated solution treated in the step S4 to a filtering device for filtering and dewatering, conveying the filtered mixed solution to a sedimentation tank 9 for reaction and sedimentation, adding sodium carbonate, PAC and sodium hypochlorite into the sedimentation tank 9, conveying the sediment into the filtering device for filtering and dewatering, conveying the solid filtered and dewatered by the filtering device to a carbon regeneration device 15 for high-temperature calcination to obtain regenerated activated carbon, and conveying the regenerated activated carbon to an adsorption tank 5 for cyclic adsorption of the garbage reverse osmosis membrane concentrated solution.

Comparative example 2

The treatment process of the reverse osmosis membrane concentrated solution of the garbage comprises the following steps:

s1: respectively pretreating the anoxic tank 2 and the aerobic tank 4; the COD concentration of the liquid in the anoxic tank 2 is consistent with the concentration of the garbage reverse osmosis membrane concentrated solution in the pretreatment process, and the DO of the liquid in the aerobic tank 4 is 4mg/L in the pretreatment process;

s11: inoculating nitrobacteria into the anoxic tank 2 and performing biofilm formation, wherein the inoculation concentration of the nitrobacteria is 25g/L, continuously introducing a garbage reverse osmosis membrane concentrated solution into the anoxic tank 2 after biofilm formation, keeping the garbage reverse osmosis membrane concentrated solution in the anoxic tank 2 until the COD concentration is consistent with that of the garbage reverse osmosis membrane concentrated solution, and controlling the pH value of the garbage reverse osmosis membrane concentrated solution introduced into the anoxic tank 2 to be 6.8;

s12: inoculating denitrifying bacteria onto a biological belt, introducing a garbage reverse osmosis membrane concentrated solution into a container, stopping feeding liquid after the container is filled with the denitrifying bacteria, performing closed aeration activation on the denitrifying bacteria, wherein the closed aeration activation time is 3 hours, placing the biological belt into the aerobic tank 4 after the closed aeration activation, and then continuously introducing the garbage reverse osmosis membrane concentrated solution into the aerobic tank 4 for a domestication process to ensure that DO of liquid in the aerobic tank 4 is 4 mg/L;

s0: and (3) conveying the garbage reverse osmosis membrane concentrated solution to an adjusting tank 1 to adjust the water quality and the water quantity of the garbage reverse osmosis membrane concentrated solution, and conveying the garbage reverse osmosis membrane concentrated solution to the pretreated anoxic tank 2 after the water quality and the water quantity of the garbage reverse osmosis membrane concentrated solution are stable.

S2: conveying the garbage reverse osmosis membrane concentrated solution into a pretreated anoxic tank 2 for nitration reaction, wherein the conductivity of the garbage reverse osmosis membrane concentrated solution introduced into the anoxic tank 2 is 42000 mu s/cm;

s3: conveying the reverse osmosis membrane concentrated solution of the garbage treated in the step S2 to a pretreated aerobic tank 4 for denitrification reaction;

s4: conveying the garbage reverse osmosis membrane concentrated solution treated in the step S3 to an adsorption tank 5 containing activated carbon for stirring and adsorption, introducing sulfuric acid into the adsorption tank 5, and controlling the Ph value in the adsorption tank 5 to be 4;

s5: conveying the garbage reverse osmosis membrane concentrated solution treated in the step S4 to a filtering device for filtering and dewatering, conveying the filtered mixed solution to a sedimentation tank 9 for reaction and sedimentation, adding sodium carbonate, PAC and sodium hypochlorite into the sedimentation tank 9, conveying the sediment into the filtering device for filtering and dewatering, conveying the solid filtered and dewatered by the filtering device to a carbon regeneration device 15 for high-temperature calcination to obtain regenerated activated carbon, and conveying the regenerated activated carbon to an adsorption tank 5 for cyclic adsorption of the garbage reverse osmosis membrane concentrated solution.

Comparative example 3

The treatment process of the reverse osmosis membrane concentrated solution of the garbage comprises the following steps:

s1: respectively pretreating the anoxic tank 2 and the aerobic tank 4; the COD concentration of the liquid in the anoxic tank 2 is consistent with the concentration of the garbage reverse osmosis membrane concentrated solution in the pretreatment process, and the DO of the liquid in the aerobic tank 4 is 4mg/L in the pretreatment process;

s11: inoculating nitrobacteria into the anoxic tank 2 and performing biofilm formation, wherein the inoculation concentration of the nitrobacteria is 25g/L, intermittently introducing a garbage reverse osmosis membrane concentrated solution into the anoxic tank 2 after biofilm formation, introducing the garbage reverse osmosis membrane concentrated solution into the anoxic tank 2 once when the COD concentration rises to 1000mg/L, and staying the garbage reverse osmosis membrane concentrated solution in the anoxic tank 2 for 3 days until the COD concentration is consistent with the concentration of the garbage reverse osmosis membrane concentrated solution, wherein the pH value of the garbage reverse osmosis membrane concentrated solution introduced into the anoxic tank 2 is 6.8;

s12: inoculating denitrifying bacteria onto a biological belt, introducing a garbage reverse osmosis membrane concentrated solution into a container, stopping feeding liquid after the container is filled with the denitrifying bacteria, performing closed aeration activation on the denitrifying bacteria, wherein the closed aeration activation time is 3 hours, placing the biological belt into the aerobic tank 4 after the closed aeration activation, and then continuously introducing the garbage reverse osmosis membrane concentrated solution into the aerobic tank 4 for a domestication process to ensure that DO of liquid in the aerobic tank 4 is 4 mg/L;

s0: and (3) conveying the garbage reverse osmosis membrane concentrated solution to an adjusting tank 1 to adjust the water quality and the water quantity of the garbage reverse osmosis membrane concentrated solution, and conveying the garbage reverse osmosis membrane concentrated solution to the pretreated anoxic tank 2 after the water quality and the water quantity of the garbage reverse osmosis membrane concentrated solution are stable.

S2: conveying the garbage reverse osmosis membrane concentrated solution into a pretreated anoxic tank 2 for nitration reaction, wherein the conductivity of the garbage reverse osmosis membrane concentrated solution introduced into the anoxic tank 2 is 42000 mu s/cm;

s3: conveying the reverse osmosis membrane concentrated solution of the garbage treated in the step S2 to a pretreated aerobic tank 4 for denitrification reaction;

s4: conveying the garbage reverse osmosis membrane concentrated solution treated in the step S3 to an adsorption tank 5 containing activated carbon for stirring and adsorption;

s5: conveying the garbage reverse osmosis membrane concentrated solution treated in the step S4 to a filtering device for filtering and dewatering, conveying the filtered mixed solution to a sedimentation tank 9 for reaction and sedimentation, adding sodium carbonate, PAC and sodium hypochlorite into the sedimentation tank 9, conveying the sediment into the filtering device for filtering and dewatering, conveying the solid filtered and dewatered by the filtering device to a carbon regeneration device 15 for high-temperature calcination to obtain regenerated activated carbon, and conveying the regenerated activated carbon to an adsorption tank 5 for cyclic adsorption of the garbage reverse osmosis membrane concentrated solution.

Comparative example 4

The treatment process of the reverse osmosis membrane concentrated solution of the garbage comprises the following steps:

s1: respectively pretreating the anoxic tank 2 and the aerobic tank 4; the COD concentration of the liquid in the anoxic tank 2 is consistent with the concentration of the garbage reverse osmosis membrane concentrated solution in the pretreatment process, and the DO of the liquid in the aerobic tank 4 is 4mg/L in the pretreatment process;

s11: inoculating nitrobacteria into the anoxic tank 2 and performing biofilm formation, wherein the inoculation concentration of the nitrobacteria is 25g/L, intermittently introducing a garbage reverse osmosis membrane concentrated solution into the anoxic tank 2 after biofilm formation, introducing the garbage reverse osmosis membrane concentrated solution into the anoxic tank 2 once when the COD concentration rises to 1000mg/L, and staying the garbage reverse osmosis membrane concentrated solution in the anoxic tank 2 for 3 days until the COD concentration is consistent with the concentration of the garbage reverse osmosis membrane concentrated solution, wherein the pH value of the garbage reverse osmosis membrane concentrated solution introduced into the anoxic tank 2 is 6.8;

s12: inoculating denitrifying bacteria onto a biological belt, introducing a garbage reverse osmosis membrane concentrated solution into a container, stopping feeding liquid after the container is filled with the denitrifying bacteria, performing closed aeration activation on the denitrifying bacteria, wherein the closed aeration activation time is 3 hours, placing the biological belt into the aerobic tank 4 after the closed aeration activation, and then continuously introducing the garbage reverse osmosis membrane concentrated solution into the aerobic tank 4 for a domestication process to ensure that DO of liquid in the aerobic tank 4 is 4 mg/L;

s0: and (3) conveying the garbage reverse osmosis membrane concentrated solution to an adjusting tank 1 to adjust the water quality and the water quantity of the garbage reverse osmosis membrane concentrated solution, and conveying the garbage reverse osmosis membrane concentrated solution to the pretreated anoxic tank 2 after the water quality and the water quantity of the garbage reverse osmosis membrane concentrated solution are stable.

S2: conveying the garbage reverse osmosis membrane concentrated solution into a pretreated anoxic tank 2 for nitration reaction, wherein the conductivity of the garbage reverse osmosis membrane concentrated solution introduced into the anoxic tank 2 is 50000 mu s/cm;

s3: conveying the reverse osmosis membrane concentrated solution of the garbage treated in the step S2 to a pretreated aerobic tank 4 for denitrification reaction;

s4: conveying the garbage reverse osmosis membrane concentrated solution treated in the step S3 to an adsorption tank 5 containing activated carbon for stirring and adsorption, introducing sulfuric acid into the adsorption tank 5, and controlling the Ph value in the adsorption tank 5 to be 4;

s5: conveying the garbage reverse osmosis membrane concentrated solution treated in the step S4 to a filtering device for filtering and dewatering, conveying the filtered mixed solution to a sedimentation tank 9 for reaction and sedimentation, adding sodium carbonate, PAC and sodium hypochlorite into the sedimentation tank 9, conveying the sediment into the filtering device for filtering and dewatering, conveying the solid filtered and dewatered by the filtering device to a carbon regeneration device 15 for high-temperature calcination to obtain regenerated activated carbon, and conveying the regenerated activated carbon to an adsorption tank 5 for cyclic adsorption of the garbage reverse osmosis membrane concentrated solution.

Comparative example 5

The treatment process of the reverse osmosis membrane concentrated solution of the garbage comprises the following steps:

s1: respectively pretreating the anoxic tank 2 and the aerobic tank 4; the COD concentration of the liquid in the anoxic tank 2 is consistent with the concentration of the garbage reverse osmosis membrane concentrated solution in the pretreatment process, and the DO of the liquid in the aerobic tank 4 is 4mg/L in the pretreatment process;

s11: inoculating nitrobacteria into the anoxic tank 2 and performing biofilm formation, wherein the inoculation concentration of the nitrobacteria is 25g/L, intermittently introducing a garbage reverse osmosis membrane concentrated solution into the anoxic tank 2 after biofilm formation, introducing the garbage reverse osmosis membrane concentrated solution into the anoxic tank 2 once when the COD concentration rises to 1000mg/L, and staying the garbage reverse osmosis membrane concentrated solution in the anoxic tank 2 for 3 days until the COD concentration is consistent with the concentration of the garbage reverse osmosis membrane concentrated solution, wherein the pH value of the garbage reverse osmosis membrane concentrated solution introduced into the anoxic tank 2 is 8.8;

s12: inoculating denitrifying bacteria onto a biological belt, introducing a garbage reverse osmosis membrane concentrated solution into a container, stopping feeding liquid after the container is filled with the denitrifying bacteria, performing closed aeration activation on the denitrifying bacteria, wherein the closed aeration activation time is 3 hours, placing the biological belt into the aerobic tank 4 after the closed aeration activation, and then continuously introducing the garbage reverse osmosis membrane concentrated solution into the aerobic tank 4 for a domestication process to ensure that DO of liquid in the aerobic tank 4 is 4 mg/L;

s0: and (3) conveying the garbage reverse osmosis membrane concentrated solution to an adjusting tank 1 to adjust the water quality and the water quantity of the garbage reverse osmosis membrane concentrated solution, and conveying the garbage reverse osmosis membrane concentrated solution to the pretreated anoxic tank 2 after the water quality and the water quantity of the garbage reverse osmosis membrane concentrated solution are stable.

S2: conveying the garbage reverse osmosis membrane concentrated solution into a pretreated anoxic tank 2 for nitration reaction, wherein the conductivity of the garbage reverse osmosis membrane concentrated solution introduced into the anoxic tank 2 is 42000 mu s/cm;

s3: conveying the reverse osmosis membrane concentrated solution of the garbage treated in the step S2 to a pretreated aerobic tank 4 for denitrification reaction;

s4: conveying the garbage reverse osmosis membrane concentrated solution treated in the step S3 to an adsorption tank 5 containing activated carbon for stirring and adsorption, introducing sulfuric acid into the adsorption tank 5, and controlling the Ph value in the adsorption tank 5 to be 4;

s5: conveying the garbage reverse osmosis membrane concentrated solution treated in the step S4 to a filtering device for filtering and dewatering, conveying the filtered mixed solution to a sedimentation tank 9 for reaction and sedimentation, adding sodium carbonate, PAC and sodium hypochlorite into the sedimentation tank 9, conveying the sediment into the filtering device for filtering and dewatering, conveying the solid filtered and dewatered by the filtering device to a carbon regeneration device 15 for high-temperature calcination to obtain regenerated activated carbon, and conveying the regenerated activated carbon to an adsorption tank 5 for cyclic adsorption of the garbage reverse osmosis membrane concentrated solution.

The water quality of the reverse osmosis membrane concentrate of garbage treated in the above examples and comparative examples 1 to 5 was measured, and the measurement results are shown in the following table:

the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. A treatment process of a reverse osmosis membrane concentrated solution of garbage is characterized by comprising the following steps:

s1: respectively pretreating the anoxic tank and the aerobic tank; the pretreatment process enables the COD concentration of the liquid in the anoxic tank to be basically consistent with the concentration of the garbage reverse osmosis membrane concentrated solution, and the DO of the liquid in the aerobic tank is 3.5-4.5 mg/L;

s2: conveying the garbage reverse osmosis membrane concentrated solution to a pretreated anoxic tank for nitration reaction;

s3: conveying the garbage reverse osmosis membrane concentrated solution treated in the step S2 to a pretreated aerobic tank for denitrification reaction;

s4: conveying the garbage reverse osmosis membrane concentrated solution treated in the step S3 to an adsorption tank containing activated carbon for stirring and adsorption;

s5: and (4) conveying the garbage reverse osmosis membrane concentrated solution treated in the step (S4) to a filtering device for filtering and dewatering, conveying the filtered mixed solution to a sedimentation tank for reaction and sedimentation, and conveying the sediment to the filtering device for filtering and dewatering.

2. The process of claim 1, wherein the step S1 includes:

s11: inoculating nitrobacteria into the anoxic tank and performing biofilm formation, wherein the inoculation concentration of the nitrobacteria is 20-30 g/L;

s12: inoculating denitrifying bacteria onto a biological belt, introducing a garbage reverse osmosis membrane concentrated solution into a container, stopping feeding liquid after the container is filled with the denitrifying bacteria, performing closed aeration activation on the denitrifying bacteria for 2-4h, placing the biological belt into an aerobic tank after the closed aeration activation is performed, and then continuously introducing the garbage reverse osmosis membrane concentrated solution into the aerobic tank for a domestication process to ensure that DO of liquid in the aerobic tank is 3.5-4.5 mg/L.

3. The process of claim 2, wherein the step S11 further comprises: and after the membrane is hung, intermittently introducing a garbage reverse osmosis membrane concentrated solution into the anoxic tank, introducing the garbage reverse osmosis membrane concentrated solution into the anoxic tank once when the COD concentration rises to 1000mg/L, and staying the garbage reverse osmosis membrane concentrated solution in the anoxic tank for 2-5d until the COD concentration is basically consistent with the concentration of the garbage reverse osmosis membrane concentrated solution.

4. The treatment process of claim 1, wherein in step S5, the solid obtained after filtration and dehydration by the filtration equipment is conveyed to a carbon regeneration equipment for high-temperature calcination to obtain regenerated activated carbon, and the regenerated activated carbon is conveyed to the adsorption tank for cyclic adsorption of the reverse osmosis membrane concentrate.

5. The treatment process of the garbage reverse osmosis membrane concentrated solution according to claim 1, characterized by further comprising a step S0 before the step S2: and conveying the garbage reverse osmosis membrane concentrated solution to a regulating tank to regulate the water quality and the water quantity of the garbage reverse osmosis membrane concentrated solution, and conveying the garbage reverse osmosis membrane concentrated solution to the pretreated anoxic tank after the water quality and the water quantity of the garbage reverse osmosis membrane concentrated solution are stable.

6. The process of claim 1, wherein at least one of sodium carbonate, PAC and sodium hypochlorite is added to the settling tank in step S5.

7. The process of claim 1, wherein in step S4, sulfuric acid is introduced into the adsorption tank, and the Ph value in the adsorption tank is controlled to be 2.5-4.

8. The waste reverse osmosis membrane concentrated solution treatment process according to claim 3, wherein in the step S11, the pH value of the waste reverse osmosis membrane concentrated solution introduced into the anoxic tank is 6-8.

9. The process of claim 1, wherein in step S2, the conductivity of the waste reverse osmosis membrane concentrate introduced into the anoxic tank is less than 45000 μ S/cm.

10. A garbage reverse osmosis membrane concentrated solution treatment system is characterized by comprising a regulating tank, an anoxic tank, an aerobic tank, an adsorption tank, a first filtering device, a sedimentation tank, a second filtering device and a water outlet tank which are sequentially connected;

the sedimentation tank is connected with the water outlet tank, the first filtering device and the second filtering device are both connected with the carbon regeneration device, the adsorption tank is connected with a carbon preparation tank, and the carbon regeneration device is connected with the carbon preparation tank;

the glucose tank is connected with the anoxic tank, the sulfuric acid storage tank is connected with the adsorption tank, and the sedimentation tank is connected with a sodium carbonate tank, a PAC tank and a sodium hypochlorite tank.

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