CN212315850U - Treatment facility of landfill leachate membrane concentrate - Google Patents
Treatment facility of landfill leachate membrane concentrate Download PDFInfo
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Abstract
The utility model discloses a treatment device for garbage leachate membrane concentrated solution, which comprises a pretreatment tank, a first pH adjusting tank, an ultraviolet catalytic oxidation device, a second pH adjusting tank, a sedimentation tank, a denitrification reaction tank, a nitration reaction tank, an MBR reaction tank and a plate-and-frame filter press; the process of the treatment equipment optimizes the treatment technology of the nanofiltration membrane concentrated solution of the traditional garbage leachate membrane concentrated solution, solves the technical problems of high operation cost of an advanced oxidation method and limited treatment effect of a biological treatment method, combines the advanced oxidation process of an ultraviolet catalytic oxidation device and the biological treatment processes of a nitration reaction tank, a denitrification reaction tank and an MBR reaction tank to treat the garbage leachate membrane concentrated solution, ensures that the discharge of the garbage leachate membrane concentrated solution stably reaches the standard, and effectively reduces the cost.
Description
Technical Field
The utility model relates to an environmental engineering technical field, concretely relates to treatment facility of landfill leachate membrane concentrate.
Background
At present, most domestic landfill plants adopt the process combination of biological method and membrane separation technology to treat the landfill leachate membrane concentrated solution, but still face the great problem of membrane concentrated solution treatment. The landfill leachate membrane concentrated solution has complex components, high pollutant concentration and poor biodegradability, and secondary pollution is easily caused when the landfill leachate membrane concentrated solution is reinjected to a landfill. Along with the increase of the number of times of recharging the concentrated solution to a landfill site, the concentrations of persistent organic pollutant components, heavy metals and salts which are difficult to degrade in the leachate are higher and higher, so that the membrane flux of the membrane treatment process is smaller and smaller, the consumption of membrane materials is increased, the treatment cost is higher and higher, and greater pressure is brought to the existing leachate treatment process.
Along with the increase of the number of times of recharging the concentrated solution to the landfill, the concentrations of persistent organic pollutant components, heavy metals and salts which are difficult to degrade in the percolate are higher and higher, and the existing biochemical and membrane treatment system is impacted more and more until the system is crashed.
At present, the treatment and disposal modes of the landfill leachate membrane concentrated liquid membrane filtration concentrated liquid can be divided into three types: firstly, transfer treatment, including outward transportation and recharging; second, further decrement, including membrane decrement, membrane distillation, evaporation, etc.; thirdly, innocent treatment, including technical means such as coagulating sedimentation, electric flocculation, advanced oxidation and the like.
In recent years, there have been increasing cases where advanced oxidation processes are effective processes for treating concentrates. In the treatment of the concentrate, the advanced oxidation process has 2 routes: (1) thoroughly mineralizing the pollutants in the concentrated solution into CO2And H2O2(ii) a (2) The pollutants in the concentrated solution are partially oxidized, so that the undegradable macromolecular organic matters such as ammonia nitrogen, HS, aromatic hydrocarbon and the like in the concentrated solution are degraded, and the biodegradability of the concentrated solution is improved. The first route is difficult to implement due to the cost, difficulty in further oxidizing the high oxidation state species produced in the oxidation process by the chemical oxidizing agent, and the requirement for harsh oxidation conditions. Therefore, the advanced oxidation method is the first choice in the prior art to convert the refractory macromolecular organic matters in the concentrated solution into the intermediate products which are easily biodegraded.
However, because the operation cost of the advanced oxidation method is high, the advanced oxidation method generally adopts a low-cost biological treatment method for treatment, but high-concentration wastewater such as garbage concentrated solution and the like contains macromolecular organic matters which are difficult to degrade, but the current single biological treatment method cannot meet the discharge standard of the concentrated solution.
SUMMERY OF THE UTILITY MODEL
In order to solve the contradiction between the high operation cost of the advanced oxidation method and the limited treatment effect of the biological treatment method, the utility model aims to provide a treatment device of the garbage leachate membrane concentrated solution, which can combine the advanced oxidation method and the biological treatment method and effectively improve the biodegradability of the concentrated solution.
The purpose of the utility model is realized by adopting the following technical scheme:
a treatment device for garbage leachate Membrane concentrated solution comprises a pretreatment tank, a first pH adjusting tank, an ultraviolet catalytic oxidation device, a second pH adjusting tank, a sedimentation tank, a denitrification reaction tank, a nitration reaction tank, an MBR (Membrane bioreactor) reaction tank and a plate-and-frame filter press, wherein the denitrification reaction tank is connected with the nitrification reaction tank through the Membrane bioreactor; the waste liquid outlet end of the pretreatment tank is connected with the waste liquid inlet end of the first pH adjusting tank; the waste liquid outlet end of the first pH adjusting tank is connected with the waste liquid inlet end of an ultraviolet catalytic oxidation device, an ultraviolet generator is arranged on the ultraviolet catalytic oxidation device, and an oxidant and a catalyst are added in the ultraviolet catalytic oxidation reaction device; a first pH regulator is added into the first pH regulating pool and is used for regulating the pH value of the wastewater to 3-5; the waste liquid outlet end of the ultraviolet catalytic oxidation device is connected with the waste liquid inlet end of the second pH adjusting tank; the waste liquid outlet end of the second pH adjusting tank is connected with the waste liquid inlet end of the sedimentation tank; a second pH regulator is added into the second pH regulating pool and is used for regulating the pH of the wastewater to 7-8; the water outlet of the sedimentation tank is connected with the water inlet of the denitrification reaction tank, and the sludge outlet of the sedimentation tank is connected with the sludge inlet of the plate-and-frame filter press; coagulant aids are added into the sedimentation tank; the water outlet of the denitrification reaction tank is connected with the water inlet of the nitrification reaction tank; the water outlet of the nitration reaction tank is connected with the water inlet of the MBR reaction tank; and a sludge outlet of the MBR reaction tank is respectively connected with a sludge inlet of the denitrification reaction tank and a sludge inlet of the plate-and-frame filter press.
Specifically, the utility model discloses a treatment facility of landfill leachate membrane concentrate's theory of operation does: the garbage leachate membrane concentrated solution is discharged to a concentrated solution collecting tank after being generated, firstly enters a pretreatment tank to adjust the water yield and the water quality, then passes through a first pH adjusting tank to adjust the pH of the garbage leachate membrane concentrated solution, adjusts the pH to be within the range of 3-5, enters an ultraviolet catalytic oxidation device, oxidizes organic matters in the garbage leachate membrane concentrated solution by utilizing ultraviolet light emitted by an ultraviolet generator and a strong oxidation system formed by adding a catalyst and an oxidant, most of the organic matters which are difficult to biodegrade can be effectively removed, and meanwhile, the oil content of the water quality is greatly reduced (the COD of the effluent is generally 180-300 mg/L). And (3) adjusting the pH of the landfill leachate membrane concentrated solution to 7-8 by the aid of the second pH adjusting tank, adding coagulant aids into the effluent, polymerizing flocs in the landfill leachate membrane concentrated solution into large-particle flocs, filtering the flocs in the settling tank, sequentially feeding the landfill leachate membrane concentrated solution into a denitrification reaction tank, a nitrification reaction tank and an MBR reaction tank for deep treatment, wherein the effluent standard of the MBR reaction tank can be in accordance with the pollution control standard of domestic garbage landfill (GB 16889-2008). Wherein most sludge in the MBR reaction tank is sent to a plate-and-frame filter press for plate-and-frame sludge pressing, and the rest sludge flows back to the denitrification reaction tank.
The ultraviolet catalytic oxidation reaction in the ultraviolet catalytic oxidation reaction device is a chemical reaction in which an ultraviolet catalyst performs catalytic action under the action of light, and the ultraviolet catalytic reaction is generally a catalytic reaction among multiple phase states. The ultraviolet catalytic oxidation technology is a novel advanced oxidation technology, has the characteristics of simple process, low energy consumption, high efficiency, easy operation, no secondary pollution and the like, and is considered to be one of the most promising and most effective treatment methods for degrading persistent organic pollutants.
The ultraviolet catalytic oxidation is to add a certain amount of catalyst into a reaction solution to generate OH under the irradiation of ultraviolet light, and organic pollutants are degraded through the strong oxidation of the OH. OH is generated mainly through 2 ways, and firstly, a certain amount of OH is generated by combining ultraviolet and an oxidant; secondly, the combination of the catalyst and the oxidant can also generate OH. Meanwhile, the addition of the catalyst can obviously improve the photolysis rate of the oxidant.
The ultraviolet catalytic oxidation is characterized by comprising the following main components: the reaction cost is low and the reaction condition is mild. The ultraviolet catalytic reaction can use sunlight or ultraviolet light as a light source, and is an efficient and energy-saving wastewater treatment technology; ② the reaction is easy to control and the organic matter is degraded into CO completely2And H2O, the subsequent disposal of the reaction product is not required to be considered; the reaction speed is high, and under the action of a catalyst with good performance, the degradation of pollutants in the wastewater generally only needs a few minutes to a few hours, which is far shorter than the reaction time of other traditional methods; fourthly, the application range is wide, and the treatment effect is good. OH generated in the ultraviolet catalysis process is an active oxidation species playing a main role, has strong oxidation capacity, effectively oxidizes difficultly-degraded organic pollutants with complex molecular structures, and can effectively treat the garbage leachate membrane concentrated solution.
Further, the device also comprises an intermediate water tank, wherein the intermediate water tank is arranged between the sedimentation tank and the denitrification reaction tank.
Still further, still include the charcoal canister, the charcoal canister is connected with the delivery port of MBR reaction tank.
Further, the first pH adjusting agent is sulfuric acid; the second pH regulator is sodium hydroxide.
Still further, the oxidant comprises one or more of hydrogen peroxide, air, oxygen and peroxyacetic acid; the catalyst is a copper-based catalyst and/or an iron-based catalyst to improve the oxidation efficiency. If hydrogen peroxide is selected as the oxidant, the chain reaction of the ultraviolet rays, the catalyst and the oxidant is as follows:
H2O2+UV→2·OH (1)；
Cu2++HO2·→Cu++O2+H+ (2)；
Cu++H2O2→Cu2++OH－+·OH (3)；
H2O2+Cu2+→HO2·+Cu++H+ (4)；
H2O2+·OH→HO2·+H2O (5)。
furthermore, an adsorbent is added into the pretreatment tank, and the adsorbent is ferric chloride.
The process of the treatment equipment of the landfill leachate membrane concentrated solution comprises the following steps:
1) after the wastewater is sent to a pretreatment tank, ferric trichloride is added as an adsorbent, the upper layer waste liquid of the pretreatment tank is sent to a first pH adjusting tank, and the lower layer sludge of the pretreatment tank is sent to a plate-and-frame filter press;
2) after the waste liquid is sent to a first pH regulating tank, adding a first pH regulator until the pH value is 4, controlling the air pressure to be 0.2MPa, and sending the waste liquid to an ultraviolet catalytic oxidation device after stirring;
3) after the waste liquid enters the ultraviolet catalytic oxidation device, the ultraviolet generator radiates ultraviolet rays to the waste liquid, and then a catalyst and an oxidant are added, wherein the reaction conditions are as follows: compressing the air to 0.2MPa, and keeping the air for 1.5 h; after the reaction is carried out until the COD of the waste liquid is less than or equal to 200mg/L, discharging the waste liquid to a second pH regulating tank;
4) after the waste liquid is sent to a second pH adjusting tank, adding a second pH adjusting agent, adjusting the pH to 8, and then discharging the waste liquid to a sedimentation tank;
5) after the waste liquid is sent to a sedimentation tank, adding coagulant aids, taking the upper layer liquid and sending the upper layer liquid to a denitrification reaction tank, and conveying the lower layer sludge of the sedimentation tank to a plate-and-frame filter press to be pressed into dry sludge;
6) sending the upper layer liquid to a denitrification reaction tank, setting the denitrification reaction tank to be in an anoxic sealed state, then sending the upper layer liquid to a nitrification reaction tank, and staying the liquid in the denitrification reaction tank and the nitrification reaction tank for 20 hours;
7) sending the waste liquid discharged from the nitration reaction tank to an MBR reaction tank, refluxing partial sludge on the lower layer of the MBR reaction tank to the denitrification reaction tank, and sending the rest sludge to a plate-and-frame filter press;
8) and directly discharging supernatant liquor of the MBR reaction tank.
Further, in the step 2), the UV value of the ultraviolet ray is 185-254 nm.
Further, in the step 3), the reaction temperature is 45-55 ℃, and the retention time is 1.5 h.
Further, in the step 7), the MBR reaction tank is a solid-liquid separation type membrane with the aperture of 0.005-0.01 μm.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model discloses optimize traditional rubbish leachate membrane concentrate and receive filter membrane concentrate processing technology, solved the high running cost of advanced oxidation method and the technical problem between the limited treatment effect of biological treatment method, with the advanced oxidation technology of ultraviolet catalytic oxidation device and the biological treatment technology combination processing rubbish leachate membrane concentrate of nitration reaction pond, denitrification reaction pond and MBR reaction tank, guarantee that the emission of rubbish leachate membrane concentrate is stable up to standard, effective reduce cost.
Drawings
Fig. 1 is a process route diagram of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.
As shown in fig. 1, a treatment device for landfill leachate membrane concentrated solution comprises a pretreatment tank, a first pH adjusting tank, an ultraviolet catalytic oxidation device, a second pH adjusting tank, a sedimentation tank, an intermediate water tank, a denitrification reaction tank, a nitrification reaction tank, an MBR reaction tank and a plate-and-frame filter press; the waste liquid outlet end of the pretreatment tank is connected with the waste liquid inlet end of the first pH adjusting tank; the waste liquid outlet end of the first pH adjusting tank is connected with the waste liquid inlet end of an ultraviolet catalytic oxidation device, an ultraviolet generator is arranged on the ultraviolet catalytic oxidation device, and an oxidant and a catalyst are added in the ultraviolet catalytic oxidation reaction device; a first pH regulator is added into the first pH regulating pool and is used for regulating the pH value of the wastewater to 3-5; the waste liquid outlet end of the ultraviolet catalytic oxidation device is connected with the waste liquid inlet end of the second pH adjusting tank; the waste liquid outlet end of the second pH adjusting tank is connected with the waste liquid inlet end of the sedimentation tank; a second pH regulator is added into the second pH regulating pool and is used for regulating the pH of the wastewater to 7-8; the water outlet of the sedimentation tank is connected with the water inlet of the denitrification reaction tank; the intermediate water tank is arranged between the sedimentation tank and the denitrification reaction tank; the sludge outlet of the sedimentation tank is connected with the sludge inlet of the plate-and-frame filter press; coagulant aids are added into the sedimentation tank; the water outlet of the denitrification reaction tank is connected with the water inlet of the nitrification reaction tank; the water outlet of the nitration reaction tank is connected with the water inlet of the MBR reaction tank; and a sludge outlet of the MBR reaction tank is respectively connected with a sludge inlet of the denitrification reaction tank and a sludge inlet of the plate-and-frame filter press.
Specifically, the utility model discloses a treatment facility of landfill leachate membrane concentrate's theory of operation does: the garbage leachate membrane concentrated solution is discharged to a concentrated solution collecting tank after being generated, firstly enters a pretreatment tank to adjust the water yield, then passes through a first pH adjusting tank to adjust the pH of the garbage leachate membrane concentrated solution, adjusts the pH to be within 3-5, enters an ultraviolet catalytic oxidation device, oxidizes organic matters in the garbage leachate membrane concentrated solution by using ultraviolet light emitted by an ultraviolet generator and a strong oxidation system formed by adding a catalyst and an oxidant, most of the organic matters which are difficult to biodegrade can be effectively removed, and meanwhile, the oil content of water quality is greatly reduced (COD water outlet is generally 180-fold and 300 mg/L). And (3) adjusting the pH of the landfill leachate membrane concentrated solution to 7-8 by the aid of the second pH adjusting tank, adding coagulant aids into the effluent, polymerizing flocs in the landfill leachate membrane concentrated solution into large-particle flocs, filtering the flocs in the settling tank, sequentially feeding the landfill leachate membrane concentrated solution into a denitrification reaction tank, a nitrification reaction tank and an MBR reaction tank for deep treatment, wherein the effluent standard of the MBR reaction tank can be in accordance with the pollution control standard of domestic garbage landfill (GB 16889-2008). Wherein most sludge in the MBR reaction tank is sent to a plate-and-frame filter press for plate-and-frame sludge pressing, and the rest sludge flows back to the denitrification reaction tank.
Still further, still include the charcoal canister, the charcoal canister is connected with the delivery port of MBR reaction tank, and the charcoal canister can improve the play water quality.
Further, the first pH adjusting agent is sulfuric acid; the second pH regulator is sodium hydroxide.
Still further, the oxidant comprises one or more of hydrogen peroxide, air, oxygen and peroxyacetic acid; the catalyst can be a copper catalyst or an iron catalyst to improve the oxidation efficiency.
Furthermore, an adsorbent is added into the pretreatment tank, and the adsorbent is ferric trichloride.
The process of the treatment equipment of the landfill leachate membrane concentrated solution comprises the following steps:
1) after the wastewater is sent to a pretreatment tank, ferric trichloride is added, the upper layer waste liquid of the pretreatment tank is sent to a first pH adjusting tank, and the lower layer sludge of the pretreatment tank is sent to a plate-and-frame filter press;
2) after the waste liquid is sent to a first pH regulating tank, adding a first pH regulator until the pH value is 4, controlling the air pressure to be 0.2MPa, and sending the waste liquid to an ultraviolet catalytic oxidation device after stirring;
3) after the waste liquid enters the ultraviolet catalytic oxidation device, the ultraviolet generator radiates ultraviolet rays to the waste liquid, and then a catalyst and an oxidant are added, wherein the reaction conditions are as follows: compressing the air to 0.2MPa, and keeping the air for 1.5 h; after the reaction is carried out until the COD of the waste liquid is less than or equal to 200mg/L, discharging the waste liquid to a second pH regulating tank;
4) after the waste liquid is sent to a second pH adjusting tank, adding a second pH adjusting agent, adjusting the pH to 8, and then discharging the waste liquid to a sedimentation tank;
5) after the waste liquid is sent to a sedimentation tank, adding coagulant aids, taking the upper layer liquid and sending the upper layer liquid to a denitrification reaction tank, and conveying the lower layer sludge of the sedimentation tank to a plate-and-frame filter press to be pressed into dry sludge;
6) sending the upper layer liquid to a denitrification reaction tank, setting the denitrification reaction tank to be in an anoxic sealed state, then sending the upper layer liquid to a nitrification reaction tank, and staying the liquid in the denitrification reaction tank and the nitrification reaction tank for 20 hours;
7) sending the waste liquid discharged from the nitration reaction tank to an MBR reaction tank, refluxing partial sludge on the lower layer of the MBR reaction tank to the denitrification reaction tank, and sending the rest sludge to a plate-and-frame filter press;
8) and directly discharging supernatant liquor of the MBR reaction tank.
Further, in the step 2), the UV value of the ultraviolet ray is 185-254 nm.
Further, in the step 3), the reaction temperature is 45-55 ℃, and the retention time is 1.5 h.
Further, in the step 7), the MBR reaction tank is a solid-liquid separation type membrane with the aperture of 0.005-0.01 μm.
Example 1
Taking a certain famous refuse leachate membrane concentrated solution nanofiltration membrane concentrated solution of Shenzhen as a test object, wherein the water quality of raw water is as shown in the following table.
TABLE 1 Water quality data before landfill leachate membrane concentrate treatment
The landfill leachate membrane concentrate treatment apparatus shown in figure 1 is used for treating landfill leachate membrane concentrate, and the process of the landfill leachate membrane concentrate treatment apparatus comprises the following steps:
1) after the wastewater is sent to a pretreatment tank, 2mol/L ferric trichloride is added, the upper layer waste liquid of the pretreatment tank is sent to a first pH adjusting tank, and the lower layer sludge of the pretreatment tank is sent to a plate-and-frame filter press;
2) after the waste liquid is sent to a first pH regulating tank, 2mol/L sulfuric acid is added until the pH value is 4, the air pressure is controlled to be 0.2MPa, and the waste liquid is sent to an ultraviolet catalytic oxidation device after being stirred;
3) after the waste liquid enters an ultraviolet catalytic oxidation device, controlling the reaction temperature to be 45-55 ℃; the ultraviolet generator synchronously radiates UV185-254nm to the waste liquid, and then 1mol/LH is added2O2And cuprous sulfate heptahydrate, the reaction conditions are as follows: compressing the air to 0.2MPa, and keeping the air for 1.5 h; after the reaction is carried out until the COD of the waste liquid is less than or equal to 200mg/L, discharging the waste liquid to a second pH regulating tank;
4) after the waste liquid is sent to a second pH adjusting tank, 1mol/L sodium hydroxide solution is added, the pH is adjusted to 8, and then the waste liquid is discharged to a sedimentation tank;
5) after the waste liquid is sent to a sedimentation tank, 0.5mol/LPAC is added, flocs in the waste liquid form large-particle flocs, and the large-particle flocs stay in the sedimentation tank for 0.25 h; after sedimentation, introducing the upper-layer liquid into an intermediate water tank, controlling the liquid amount in the intermediate water tank, then delivering the liquid into a denitrification reaction tank, and conveying the lower-layer sludge of the sedimentation tank to a plate-and-frame filter press to be pressed into dry sludge;
6) the upper layer liquid is sent to a denitrification reaction tank, the denitrification reaction tank is set to be in an anoxic sealed state, stays in the denitrification reaction tank for 7 hours, and then is sent to a nitrification reaction tank;
7) sending the waste liquid discharged from the nitration reaction tank to an MBR reaction tank, wherein the MBR reaction tank adopts a solid-liquid separation type membrane, and the aperture is about 0.005-0.01 μm; part of the lower layer sludge of the MBR reaction tank flows back to the denitrification reaction tank, and the rest part of the sludge is sent to a plate-and-frame filter press; because the sludge contains microorganisms, part of the sludge needs to be returned to the denitrification reaction tank to continuously remove the polluting microorganisms.
8) Supernatant liquid of the MBR reaction tank is directly discharged, and water quality parameters are shown in Table 2.
TABLE 2 Water quality data after landfill leachate membrane concentrate treatment
According to the data in tables 1 and 2, the organic matter pollution condition, ammonia nitrogen content, total nitrogen content and total phosphorus content are all reduced after the landfill leachate membrane concentrated solution treatment, and the data in table 2 meet the pollution control standard of domestic refuse landfill (GB 16889-2008). The landfill leachate membrane concentrate after handling promptly accords with emission standard, the utility model provides a treatment facility of landfill leachate membrane concentrate can effective treatment agent landfill leachate membrane concentrate, guarantees that the tail water discharges stably up to standard.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.
Claims (6)
1. The treatment equipment for the garbage leachate membrane concentrated solution is characterized by comprising a pretreatment tank, a first pH adjusting tank, an ultraviolet catalytic oxidation device, a second pH adjusting tank, a sedimentation tank, a denitrification reaction tank, a nitration reaction tank, an MBR reaction tank and a plate-and-frame filter press; the waste liquid outlet end of the pretreatment tank is connected with the waste liquid inlet end of the first pH adjusting tank; the waste liquid outlet end of the first pH adjusting tank is connected with the waste liquid inlet end of an ultraviolet catalytic oxidation device, an ultraviolet generator is arranged on the ultraviolet catalytic oxidation device, and an oxidant and a catalyst are added in the ultraviolet catalytic oxidation reaction device; a first pH regulator is added into the first pH regulating pool and is used for regulating the pH value of the wastewater to 3-5; the waste liquid outlet end of the ultraviolet catalytic oxidation device is connected with the waste liquid inlet end of the second pH adjusting tank; the waste liquid outlet end of the second pH adjusting tank is connected with the waste liquid inlet end of the sedimentation tank; a second pH regulator is added into the second pH regulating pool and is used for regulating the pH of the wastewater to 7-8; the water outlet of the sedimentation tank is connected with the water inlet of the denitrification reaction tank, and the sludge outlet of the sedimentation tank is connected with the sludge inlet of the plate-and-frame filter press; coagulant aids are added into the sedimentation tank; the water outlet of the denitrification reaction tank is connected with the water inlet of the nitrification reaction tank; the water outlet of the nitration reaction tank is connected with the water inlet of the MBR reaction tank; and a sludge outlet of the MBR reaction tank is respectively connected with a sludge inlet of the denitrification reaction tank and a sludge inlet of the plate-and-frame filter press.
2. The apparatus for treating a landfill leachate membrane concentrate of claim 1, further comprising an intermediate tank disposed between the settling tank and the denitrification reaction tank.
3. The apparatus for treating a landfill leachate membrane concentrate of claim 1, further comprising a carbon canister connected to the water outlet of the MBR reaction tank.
4. The apparatus for the treatment of landfill leachate membrane concentrate of claim 1, wherein the first pH adjusting agent is sulfuric acid; the second pH regulator is sodium hydroxide.
5. The apparatus for the treatment of landfill leachate membrane concentrate of claim 1, wherein the oxidizing agent comprises one or more of hydrogen peroxide, air, oxygen and peracetic acid.
6. The apparatus for the treatment of landfill leachate membrane concentrate of claim 1, wherein the pretreatment tank is supplemented with an adsorbent, the adsorbent being ferric chloride.
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