CN213012459U - Mixed garbage treatment system - Google Patents
Mixed garbage treatment system Download PDFInfo
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- CN213012459U CN213012459U CN202021259734.9U CN202021259734U CN213012459U CN 213012459 U CN213012459 U CN 213012459U CN 202021259734 U CN202021259734 U CN 202021259734U CN 213012459 U CN213012459 U CN 213012459U
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Abstract
The utility model discloses a mixed garbage treatment system, which comprises a water collecting tank, a first facultative tank, a second facultative tank, a first aerobic tank, a second aerobic tank, a sedimentation tank, a transfer tank, a first submersible pump, a second submersible pump and a filtering mechanism; the top of the collecting tank is used for inputting mixed garbage to be treated, the first submersible pump is fixedly arranged in the middle of the collecting tank, a first transmission pipe is arranged in the first facultative tank and is connected with a first submersible pump pipeline, and a water body in the middle of the collecting tank is pumped to the lower part of the first facultative tank by the first submersible pump for inputting, overflow pipes for inputting the water body in the upper tank body are arranged in the second facultative tank, the first aerobic tank, the second aerobic tank, the sedimentation tank and the transfer tank, and the height of the upper end of each overflow pipe is gradually reduced in the horizontal direction; the lower part of the transfer tank is connected with an inlet pipeline of the filtering mechanism, the second submersible pump is arranged at the lower part of the second aerobic tank and pumps the water body at the bottom of the second aerobic tank back to the first facultative tank, and the implementation of the scheme is reliable.
Description
Technical Field
The utility model belongs to the technical field of refuse treatment, especially, relate to the processing technology field of solid-liquid mixed rubbish, specifically a mixed refuse treatment system.
Background
The garbage disposal is a major problem in the field of waste disposal, the effect of the garbage disposal is good, whether secondary pollution exists or not is influenced, and the environmental protection is also influenced, the disposal of kitchen garbage and garbage leachate in urban garbage is a problem which troubles the department of urban waste disposal, the types of kitchen garbage and household garbage are more and more abundant due to the increasingly improved living standard of people, the disposal of urban garbage generally needs to be carried out nearby at the periphery of a city, and the problem of sewage disposal brought with the disposal is a problem which is always overcome by academics.
In the traditional treatment method, a chemical agent is adopted for neutralization, precipitation and conversion, but the problems of high cost and secondary pollution brought by the chemical agent also have to be taken into consideration, and particularly, if a treated water body needs to be discharged, a reliable treatment scheme is not provided, and even an ecological crisis along a river is caused.
Disclosure of Invention
To the situation of the prior art, the utility model aims to provide a mixed refuse treatment system that the treatment effect is good, the implementation cost is low and friendly to the environment.
In order to realize the technical purpose, the utility model adopts the technical scheme that:
a mixed garbage treatment system comprises a water collecting tank, a first facultative tank, a second facultative tank, a first aerobic tank, a second aerobic tank, a sedimentation tank, a transfer tank, a first submersible pump, a second submersible pump and a filtering mechanism; wherein the collecting tank is of a structure with an open upper end face, the top of the collecting tank is used for inputting mixed garbage to be treated, the first submersible pump is fixedly arranged in the middle of the collecting tank, the first facultative tank is internally provided with a first transmission pipe, the lower end of the first transmission pipe extends to the lower part of the first facultative tank, the upper end of the first transmission pipe is connected with the first submersible pump through a pipeline, water in the middle of the collecting tank is pumped to the lower part of the first facultative tank for inputting by the first submersible pump, the second facultative tank is internally provided with a first overflow pipe, the lower end of the first overflow pipe extends to the middle of the second facultative tank, the upper end of the first overflow pipe is communicated with the upper part of the first facultative tank, the first aerobic tank is internally provided with a second overflow pipe, the upper end of the second overflow pipe is communicated with the upper part of the second facultative tank, the second aerobic tank is internally provided with a third overflow pipe, the lower end of the third overflow pipe extends to the middle part of the second aerobic tank, the upper end of the third overflow pipe is communicated with the upper part of the first aerobic tank, a fourth overflow pipe is arranged in the sedimentation tank, the lower end of the fourth overflow pipe extends to the middle part of the sedimentation tank, the upper end of the fourth overflow pipe is communicated with the upper part of the second aerobic tank, a fifth overflow pipe is arranged in the transfer tank, the lower end of the fifth overflow pipe extends to the middle part of the transfer tank, the upper end of the fifth overflow pipe is communicated with the upper part of the sedimentation tank, and the heights of the upper ends of the first overflow pipe, the second overflow pipe, the third overflow pipe, the fourth overflow pipe and the fifth overflow; the lower part of the transfer pool is connected with an inlet pipeline of the filtering mechanism, the second submersible pump is arranged at the lower part of the second aerobic pool, the output end of the second submersible pump is connected into the first facultative tank through a pipeline, and the water body at the bottom of the second aerobic pool is pumped back into the first facultative tank by the second submersible pump.
As a possible embodiment, further, the filtering mechanism is a nanofiltration system; the nanofiltration system comprises:
the inlet end of the nanofiltration water inlet pump is communicated with a pipeline at the lower part of the middle tank, and a first valve is arranged on the connecting pipeline;
the inlet end of the nanofiltration booster pump is connected with the outlet end pipeline of the nanofiltration water inlet pump, and a second valve is arranged on the connecting pipeline;
the inlet end of the nano-filtration tube is connected with the outlet end pipeline of the nano-filtration booster pump, the nano-filtration tube is provided with a nano-filtration circulating pump, the nano-filtration tube is provided with two outlets for outputting water filtered by the nano-filtration tube, one outlet is provided with a branch which is communicated with the outlet end of the nano-filtration booster pump and used for refluxing the water filtered by the nano-filtration tube, and the other outlet is provided with a third valve.
As a possible implementation mode, the scheme further comprises an air blower, wherein aeration pipes are arranged at the bottoms of the first facultative tank, the second facultative tank, the first aerobic tank and the second aerobic tank, an air outlet end of the air blower is connected with an air conveying pipeline, the air conveying pipeline is provided with air conveying branches corresponding to the aeration pipes one by one, and the air conveying branches are communicated with the aeration pipes arranged at the bottoms of the first facultative tank, the second facultative tank, the first aerobic tank and the second aerobic tank.
As a possible implementation mode, the scheme further comprises a water quality monitor, wherein the water quality monitor is connected with three water quality detection probes, the three water quality detection probes correspond to the first facultative tank, the second facultative tank and the second aerobic tank one by one and extend to the middle parts or the lower parts of the first facultative tank, the second facultative tank and the second aerobic tank respectively.
As a possible implementation manner, the garbage treatment device further comprises a grid pond, a third submersible pump and a transmission mechanism, wherein a grid net used for filtering large-volume substances in the mixed garbage is arranged on the upper portion of the grid pond, the third submersible pump is arranged on the lower portion of the grid pond, the output end of the third submersible pump is connected with the upper portion of the water collecting pond through a pipeline and used for inputting the filtered mixed garbage into the water collecting pond, a solid-liquid separator is further arranged between the third submersible pump and the water collecting pond, the output end of the third submersible pump is connected with the input end of the solid-liquid separator through a pipeline, a liquid phase outlet of the solid-liquid separator is connected with the water collecting pond, and the transmission mechanism is arranged on one side of the grid pond and used for inputting the materials to.
A treatment method of a mixed garbage treatment system comprises the following steps:
(1) conveying the mixed garbage with large-volume impurities removed by filtration into a water collecting tank, and adding a pH regulator to regulate the pH of sewage in the water collecting tank to 7-8;
(2) conveying the supernatant in the water collecting tank to a first facultative tank, and after the supernatant stays in the first facultative tank for a preset time, sequentially inputting the supernatant into a second facultative tank, a first aerobic tank and a second aerobic tank to stay for the preset time, wherein facultative microorganisms are cultured in the first facultative tank and the second facultative tank, and aerobic microorganisms are cultured in the first aerobic tank and the second aerobic tank;
(3) when the sewage stays in the first facultative tank, the second facultative tank, the first aerobic tank and the second aerobic tank, introducing air for bubbling according to a preset period, so that the sewage is stirred by airflow;
(4) pumping the water body part at the bottom of the second aerobic tank back to the first facultative tank;
(5) carrying out index detection on water bodies in the first facultative tank, the second facultative tank and the second aerobic tank, wherein the index detection at least comprises pH, temperature, COD, ammonia nitrogen, total nitrogen and dissolved oxygen index, and after the water body indexes in the first facultative tank, the second facultative tank and the second aerobic tank reach preset values, inputting sewage into the first facultative tank, and simultaneously enabling the sewage in the first facultative tank, the second facultative tank, the first aerobic tank and the second aerobic tank to overflow to a next tank body connected with the first facultative tank, the second facultative tank, the first aerobic tank and the second aerobic tank in sequence and finally overflow to a sedimentation tank;
(6) separating the microorganism flocs and the water body in the sedimentation tank and leading the microorganism flocs and the water body to flow back to the first facultative tank, wherein the solid precipitated in the sedimentation tank is used for flowing back or preparing fertilizer, the water body in the treated sedimentation tank is conveyed to the transfer tank, and then is conveyed to the filtering mechanism by the transfer tank to be filtered and then is discharged outside.
As a possible implementation, further, the filtering mechanism is a nanofiltration system.
As a possible embodiment, further, the facultative microorganisms in the step (2) are mixed by bacillus, nitrifying bacteria and denitrifying bacteria in proportion; the aerobic microorganism comprises photoautotrophic microorganisms and photoautotrophic microorganisms, wherein the photoautotrophic microorganisms are formed by mixing chlorella, scenedesmus and spirulina in proportion, and the photoautotrophic microorganisms are formed by mixing rhodospirillum and green spirillum in proportion.
As a preferred alternative, the facultative microorganisms are preferably bacillus, nitrobacteria and denitrifying bacteria mixed in a ratio of 1: 1; the photoautotrophic microorganism is formed by mixing chlorella, scenedesmus and spirulina according to the volume ratio of 1: 1; the photoheterotrophic microorganism is formed by mixing rhodospirillum and viviparidae in a ratio of 1: 1.5, and the volume ratio of the consumption of the facultative microorganism to the consumption of the photoheterotrophic microorganism is 3: 2: 1-1.5.
As a preferred alternative, it is preferable that the Bacillus, the nitrifying bacteria and the denitrifying bacteria are all cultured in LB medium before mixing; the chlorella and the scenedesmus are cultured by BG11 culture medium, and the spirulina is cultured by Zarrouk culture medium; the culture medium formula of the rhodospirillum and the green spirillum comprises the following components:
NH4C1 1.0 g；
CH3COONa 3.5 g；
MgCl2 0.1 g；
CaCl2 0.1 g；
KH2PO4 0.6g；
K2HPO4 0.4 g；
0.1 g of yeast extract;
1000 ml of water;
and the pH of the medium was 7.2.
Adopt foretell technical scheme, compared with the prior art, the utility model, its beneficial effect who has is: the water collecting tank is ingeniously utilized to the scheme, facultative tank and good oxygen pond are handled the mixed rubbish water, in addition air-blower and water quality monitoring appearance's cooperation, the cooperation is assisted the pollutant in the degradation water to environment friendly microorganism for operating personnel can carry the water after the preceding one-level was handled step by step according to the water treatment condition, the messenger mixes the rubbish water and can obtain convenient, nimble and the processing that does not have the subsequent pollution risk, environmental friendliness degree and reduction treatment cost have been improved.
Drawings
The scheme of the invention is further explained by combining the attached drawings and the detailed embodiment:
fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;
fig. 2 is a schematic diagram of a processing method of an implementation structure according to embodiment 1 of the present invention;
fig. 3 is a schematic structural diagram of embodiment 2 of the present invention;
fig. 4 is a schematic diagram of a processing method of an embodiment 2 of the present invention.
Detailed Description
Example 1
As shown in fig. 1, the embodiment discloses a mixed garbage disposal system, which comprises a water collecting tank 1, a first facultative tank 2, a second facultative tank 3, a first aerobic tank 4, a second aerobic tank 5, a sedimentation tank 6, a transfer tank 7, a first submersible pump 101, a second submersible pump 52 and a filtering mechanism 8; wherein the collecting tank 1 is of an open structure at the upper end face, the top of the collecting tank is used for inputting mixed garbage to be treated, the first submersible pump 101 is fixedly arranged in the middle of the collecting tank 1, the first facultative tank 2 is internally provided with a first transmission pipe 201, the lower end of the first transmission pipe 201 extends to the lower part of the first facultative tank 2, the upper end of the first transmission pipe 201 is connected with the first submersible pump 101 through a pipeline (the pipeline is provided with a first check valve 102), the first submersible pump 101 pumps water in the middle of the collecting tank 1 to the lower part of the first facultative tank 2 for inputting, the second facultative tank 3 is internally provided with a first overflow pipe 301, the lower end of the first overflow pipe 301 extends to the middle of the second facultative tank 3, the upper end of the first facultative tank 2 is communicated with the upper part of the first facultative tank 2, the first aerobic tank 4 is internally provided with a second overflow pipe 41, the lower end of the second overflow pipe 41 extends to the middle of the first aerobic, the upper end of the first overflow pipe 301 is communicated with the upper part of the second facultative tank 3, the lower end of the third overflow pipe 51 is arranged in the second aerobic tank 5, the lower end of the third overflow pipe 51 extends to the middle part of the second aerobic tank 5, the upper end of the third overflow pipe is communicated with the upper part of the first aerobic tank 5, the sedimentation tank 6 is internally provided with a fourth overflow pipe 61, the lower end of the fourth overflow pipe 61 extends to the middle part of the sedimentation tank 6, the upper end of the fourth overflow pipe 61 is communicated with the upper part of the second aerobic tank 5, the transfer tank 7 is internally provided with a fifth overflow pipe 71, the lower end of the fifth overflow pipe 71 extends to the middle part of the transfer tank 7, the upper end of the fifth overflow pipe 71 is communicated with the upper part of the sedimentation tank 6, and the heights of the upper ends of the first overflow pipe 301, the second; the lower part of the transfer pool 7 is connected with an inlet pipeline of the filtering mechanism 8, the second submersible pump 52 is arranged at the lower part of the second aerobic pool 5, the output end of the second submersible pump is connected into the first facultative tank 2 through a pipeline, and the second submersible pump 52 pumps the water body at the bottom of the second aerobic pool 5 back into the first facultative tank 2.
The filtering mechanism in the embodiment is a nanofiltration system; the nanofiltration system comprises:
a nanofiltration water inlet pump 81, the inlet end of which is communicated with the lower pipeline of the middle tank 7 and the connecting pipeline is provided with a first valve 84;
the inlet end of the nanofiltration booster pump 82 is connected with the outlet end pipeline of the nanofiltration water inlet pump 81, a second valve 86 is arranged on the connecting pipeline, and a branch valve 85 can be arranged to assist in leading out water for detection or conveying to other treatment links;
and the inlet end of the nano-filtration pipe 83 is connected with the outlet end pipeline of the nano-filtration booster pump 82, a nano-filtration circulating pump 87 is arranged on the pipeline, the nano-filtration pipe 83 is provided with two outlets for outputting the water body filtered by the nano-filtration pipe 83, one outlet is provided with a branch which is communicated with the outlet end of the nano-filtration booster pump 82 and used for refluxing the water body filtered by the nano-filtration pipe 83, and the other outlet is provided with a third valve 88.
In addition, in order to facilitate mixing of the water bodies at the bottoms of the first facultative anaerobic tank 2, the second facultative anaerobic tank 3, the first aerobic tank 4 and the second aerobic tank 5 and supply a certain amount of air, as a possible implementation manner, the present solution further includes an air blower 10, the bottoms of the first facultative anaerobic tank 2, the second facultative anaerobic tank 3, the first aerobic tank 4 and the second aerobic tank 5 are all provided with aeration pipes 1001, 1002, 1003 and 1004, the air outlet end of the air blower 10 is connected with an air delivery pipeline (the pipeline is provided with a second check valve 1005), and the air delivery pipeline is formed with air delivery branches corresponding to the aeration pipes 1001, 1002, 1003 and 1004 one by one and communicated with the aeration pipes 1001, 1002, 1003 and 1004 arranged at the bottoms of the first facultative anaerobic tank 2, the second facultative anaerobic tank 3, the first aerobic tank 4 and the second aerobic tank 5 through the air delivery branches.
In order to monitor the water quality conveniently, as a possible implementation mode, the water quality monitoring system further comprises a water quality monitor 9, wherein the water quality monitor 9 is connected with three water quality detection probes 91, 92 and 93, the three water quality detection probes 91, 92 and 93 correspond to the first facultative tank 2, the second facultative tank 3 and the second aerobic tank 5 one by one and extend to the middle part or the lower part of the first facultative tank 2, the second facultative tank 3 and the second aerobic tank 5 respectively.
In the case of the device solution proposed in the present embodiment, as shown in fig. 2, the present embodiment also provides a solution for applying the embodiment to a treatment solution for treating a waste pressing liquid;
a treatment method of a mixed garbage treatment system comprises the following steps:
(1) conveying the mixed garbage with large-volume impurities removed by filtration to a water collecting tank 1, and then adding a pH regulator to regulate the pH of the sewage in the water collecting tank 1 to 7-8;
(2) conveying the supernatant in the water collecting tank 1 to a first facultative tank 2, allowing the supernatant to stay in the first facultative tank 2 for a preset time, and then sequentially inputting the supernatant into a second facultative tank 3, a first aerobic tank 4 and a second aerobic tank 5 to stay for a preset time, wherein facultative microorganisms are cultured in the first facultative tank 2 and the second facultative tank 3, and aerobic microorganisms are cultured in the first aerobic tank 4 and the second aerobic tank 5;
(3) when the sewage stays in the first facultative tank 2, the second facultative tank 3, the first aerobic tank 4 and the second aerobic tank 5, introducing air for bubbling according to a preset period, so that the sewage is stirred by airflow;
(4) pumping the water body part at the bottom of the second aerobic tank 5 back to the first facultative tank 2;
(5) carrying out index detection on water bodies in the first facultative tank 2, the second facultative tank 3 and the second aerobic tank 5, at least comprising pH, temperature, COD, ammonia nitrogen, total nitrogen and dissolved oxygen indexes, detecting and recording the water body indexes in the first facultative tank 2, the second facultative tank 3 and the second aerobic tank 5, inputting sewage into the first facultative tank 2 after the water body indexes in the first facultative tank 2, the second facultative tank 3, the first aerobic tank 4 and the second aerobic tank 5 reach preset values, and simultaneously enabling the sewage in the first facultative tank 2, the second facultative tank 3, the first aerobic tank 4 and the second aerobic tank 5 to overflow to the next tank body connected with the first facultative tank in sequence and finally overflow to the sedimentation tank 6;
(6) the method comprises the steps of separating microbial flocs and water in a sedimentation tank 6 and making the microbial flocs and the water flow back to a first facultative tank 2, enabling solids precipitated in the sedimentation tank 6 to flow back or prepare fertilizer, conveying the water in the treated sedimentation tank 6 to a transfer tank 7, conveying the water to a filtering mechanism 8 from the transfer tank 7 for filtering, and then discharging the water to the outside, wherein as a possible implementation mode, the filtering mechanism 8 is a nanofiltration system.
In addition, as a possible embodiment, further, the facultative microorganisms in the step (2) are prepared by mixing bacillus, nitrifying bacteria and denitrifying bacteria in proportion; the aerobic microorganisms comprise photoautotrophic microorganisms and photoautotrophic microorganisms, wherein the photoautotrophic microorganisms are formed by mixing chlorella, scenedesmus and spirulina in proportion, and the photoautotrophic microorganisms are formed by mixing rhodospirillum and viviparidae in proportion; as a preferred alternative, the facultative microorganisms are preferably bacillus, nitrobacteria and denitrifying bacteria mixed in a ratio of 1: 1; the photoautotrophic microorganism is formed by mixing chlorella, scenedesmus and spirulina according to the volume ratio of 1: 1; the photoheterotrophic microorganism is formed by mixing rhodospirillum and viviparidae in a ratio of 1: 1.5, and the volume ratio of the consumption of the facultative microorganism to the consumption of the photoheterotrophic microorganism is 3: 2: 1-1.5.
Further, as a preferred alternative, it is preferable that the bacillus, the nitrifying bacteria and the denitrifying bacteria are all cultured in an LB medium before being mixed; the chlorella and the scenedesmus are cultured by BG11 culture medium, and the spirulina is cultured by Zarrouk culture medium; the culture medium formula of the rhodospirillum and the green spirillum comprises the following components:
NH4C1 1.0 g；
CH3COONa 3.5 g；
MgCl2 0.1 g；
CaCl2 0.1 g；
KH2PO4 0.6 g；
K2HPO4 0.4 g；
0.1 g of yeast extract;
1000 ml of water;
and the pH of the medium was 7.2.
The general idea of the implementation method of the embodiment is that the eutrophic sewage enters the facultative treatment system (i.e., the first facultative tank and the second facultative tank) after the pH value of the eutrophic sewage is adjusted, and the nutrient substances are treated by the bacillus, the nitrobacteria, the denitrifying bacteria and other heterotrophic bacteria, so as to decompose the macromolecular organic matters, stay for 17-20 days, and then enter the aerobic treatment system (i.e., the first aerobic tank and the second aerobic tank).
The aerobic treatment system is composed of light energy autotrophic microorganisms such as chlorella, scenedesmus, spirulina and the like, the autotrophic microorganisms can effectively decompose and absorb pollutants by using light energy as energy and convert the pollutants into ammonia gas, release the ammonia gas and other gases, and convert the rest of the gases into the components of the microorganisms, so that the concentration of indexes such as ammonia nitrogen, COD and the like in the pollutants is reduced.
The aerobic system provides dissolved oxygen through equipment such as an aerator and the like, the dissolved oxygen is controlled to be 1.5-2 mg/l, and the retention time of sewage in the aerobic treatment system is 10-13 days. The sewage from the aerobic treatment system is separated by long-time sedimentation, and the microbial flocs in the sedimentation are collected for recycling, and can be added into the facultative treatment system and the aerobic treatment system in the previous process again, so that the waste of thalli is avoided. The garbage squeezed liquid after the precipitation treatment still needs to enter a nanofiltration system, so that the effluent reaches the discharge standard.
As a specific application example, the specific implementation process flow of the present scheme may be (including related equipment, main indexes and operations):
1. normally draining the garbage squeezing liquid into a water collecting tank, wherein the capacity of the water collecting tank is daily treated water amount, adding lime to adjust the mixture to be about 7-8, standing and precipitating, and separating insoluble substances from supernatant;
2. and (3) conveying the supernatant to a first facultative tank by using a first submersible pump, wherein the retention time of the sewage in the first facultative tank is 10-12 days, and then the sewage sequentially passes through a second facultative tank, a first aerobic tank and a second aerobic tank, and the retention time is 7 days, 5-6 days and 5-6 days respectively. Facultative bacteria and aerobic bacteria specially used for degrading sewage are respectively arranged in the facultative tank and the aerobic tank, and indexes of the sewage are sequentially reduced in the flowing process until the sewage reaches the standard;
3. a second submersible pump is arranged in the second aerobic tank in advance and used for refluxing the microbial strains at the rear end to the front end for reuse;
4. the first facultative tank and the second facultative tank, and the first aerobic tank and the second aerobic tank are all provided with aeration pipelines for introducing oxygen. Meanwhile, the stirring effect on the water body is achieved, air is generated by a blower and enters each tank body along an aeration pipeline, and the ventilation volume of the facultative tank is smaller than that of the aerobic tank;
5. the first facultative tank, the second facultative tank, the first aerobic tank and the second aerobic tank are all provided with probes of pH, temperature, COD, ammonia nitrogen, total nitrogen, dissolved oxygen and flow meters, the probes are monitored for three times at different time intervals every day, and all indexes are displayed through a PLC liquid crystal screen;
6. the first facultative tank, the second facultative tank, the first aerobic tank and the second aerobic tank are all connected with water conveying pipelines, and the water conveying pipelines enter from bottom to top, and the fall between the tank bodies is 4-5 cm;
7. the rear end of the second aerobic tank is connected with a sedimentation tank, the microbial floc is separated from the water body, and the settled solid is used for reflux or directly dewatered to prepare fertilizer. The capacity of the sedimentation tank is three times of the daily treatment capacity;
8. the treated sewage enters an intermediate water tank through a sedimentation tank, and the intermediate water tank is used as a reservoir; the sewage storage tank can store sewage amount for 2-3 days;
9. and pumping the sewage in the intermediate water tank into a nanofiltration system through a nanofiltration water inlet pump, and discharging the sewage after various indexes of the sewage are reduced to be below a discharge standard through the treatment of the nanofiltration system.
Example 2
As shown in fig. 3, the embodiment discloses a mixed waste treatment system, which includes a conveying mechanism 12, a grid tank 11, a collecting tank 1, a first facultative tank 2, a second facultative tank 3, a first aerobic tank 4, a second aerobic tank 5, a sedimentation tank 6, a transfer tank 7, a first submersible pump 101, a second submersible pump 52, a third submersible pump 1101 and a filtering mechanism 8; the transmission mechanism 12 is arranged on one side of the grating pool 1, the grating net 1102 for filtering large-volume substances in the mixed garbage is arranged on the upper portion of the grating pool 1, the third submersible pump 1101 is arranged on the lower portion of the grating pool 1, the output end of the third submersible pump 1101 is connected with the upper portion of the collecting pool 1 through a pipeline and used for inputting the filtered mixed garbage into the collecting pool 1, a solid-liquid separator 13 is further arranged between the third submersible pump 1101 and the collecting pool 1, the output end of the third submersible pump 1101 is connected with the input end of the solid-liquid separator 13 through a pipeline, and a liquid phase outlet of the solid-liquid separator 13 is connected with the collecting pool 1; the collecting tank 1 is of an open structure at the upper end face, the top of the collecting tank is used for inputting mixed garbage to be treated, the first submersible pump 101 is fixedly arranged in the middle of the collecting tank 1, the first facultative tank 2 is internally provided with a first transmission pipe 201, the lower end of the first transmission pipe 201 extends to the lower part of the first facultative tank 2, the upper end of the first transmission pipe 201 is connected with the first submersible pump 101 through a pipeline, the first submersible pump 101 pumps water in the middle of the collecting tank 1 to the lower part of the first facultative tank 2 for inputting, the second facultative tank 3 is internally provided with a first overflow pipe 301, the lower end of the first overflow pipe 301 extends to the middle part of the second facultative tank 3, the upper end of the first overflow pipe is communicated with the upper part of the first facultative tank 2, the first aerobic tank 4 is internally provided with a second overflow pipe 41, the lower end of the second overflow pipe 41 extends to the middle part of the first aerobic tank 4, and the upper end of the second overflow pipe is communicated, a third overflow pipe 51 is arranged in the second aerobic tank 5, the lower end of the third overflow pipe 51 extends to the middle of the second aerobic tank 5, the upper end of the third overflow pipe is communicated with the upper part of the first aerobic tank 5, a fourth overflow pipe 61 is arranged in the sedimentation tank 6, the lower end of the fourth overflow pipe 61 extends to the middle of the sedimentation tank 6, the upper end of the fourth overflow pipe is communicated with the upper part of the second aerobic tank 5, a fifth overflow pipe 71 is arranged in the transfer tank 7, the lower end of the fifth overflow pipe 71 extends to the middle of the transfer tank 7, the upper end of the fifth overflow pipe 71 is communicated with the upper part of the sedimentation tank 6, and the heights of the upper ends of the first overflow pipe 301, the second overflow pipe 41, the third overflow pipe 51, the fourth overflow pipe 61 and the fifth overflow pipe 71; the lower part of the transfer pool 7 is connected with an inlet pipeline of the filtering mechanism 8, the second submersible pump 52 is arranged at the lower part of the second aerobic pool 5, the output end of the second submersible pump is connected into the first facultative tank 2 through a pipeline, and the second submersible pump 52 pumps the water body at the bottom of the second aerobic pool 5 back into the first facultative tank 2.
The filtering mechanism in the embodiment is a nanofiltration system; the nanofiltration system comprises:
a nanofiltration water inlet pump 81, the inlet end of which is communicated with the lower pipeline of the middle tank 7 and the connecting pipeline is provided with a first valve 84;
the inlet end of the nanofiltration booster pump 82 is connected with the outlet end pipeline of the nanofiltration water inlet pump 81, a second valve 86 is arranged on the connecting pipeline, and a branch valve 85 can be arranged to assist in leading out water for detection or conveying to other treatment links;
and the inlet end of the nano-filtration pipe 83 is connected with the outlet end pipeline of the nano-filtration booster pump 82, a nano-filtration circulating pump 87 is arranged on the pipeline, the nano-filtration pipe 83 is provided with two outlets for outputting the water body filtered by the nano-filtration pipe 83, one outlet is provided with a branch which is communicated with the outlet end of the nano-filtration booster pump 82 and used for refluxing the water body filtered by the nano-filtration pipe 83, and the other outlet is provided with a third valve 88.
In addition, in order to facilitate mixing of water bodies at the bottoms of the first facultative anaerobic tank 2, the second facultative anaerobic tank 3, the first aerobic tank 4 and the second aerobic tank 5 and supply a certain amount of air, as a possible implementation manner, the scheme further comprises an air blower 10, wherein aeration pipes 1001, 1002, 1003 and 1004 are arranged at the bottoms of the first facultative anaerobic tank 2, the second facultative anaerobic tank 3, the first aerobic tank 4 and the second aerobic tank 5, and an air outlet end of the air blower 10 is connected with an air delivery pipeline which is formed with air delivery branches corresponding to the aeration pipes 1001, 1002, 1003 and 1004 one by one and communicated with the aeration pipes 1001, 1002, 1003 and 1004 arranged at the bottoms of the first facultative anaerobic tank 2, the second facultative anaerobic tank 3, the first aerobic tank 4 and the second aerobic tank 5 through the air delivery branches.
In order to monitor the water quality conveniently, as a possible implementation mode, the water quality monitoring system further comprises a water quality monitor 9, wherein the water quality monitor 9 is connected with three water quality detection probes 91, 92 and 93, the three water quality detection probes 91, 92 and 93 correspond to the first facultative tank 2, the second facultative tank 3 and the second aerobic tank 5 one by one and extend to the middle part or the lower part of the first facultative tank 2, the second facultative tank 3 and the second aerobic tank 5 respectively.
With reference to fig. 4, in the case of the above-mentioned device solution proposed in this embodiment, this embodiment further provides a solution for processing mixed garbage;
a treatment method of a mixed garbage treatment system comprises the following steps:
(1) inputting the mixed garbage into the grating tank 11 through the transmission mechanism 12, filtering out large-volume impurities through the grating net 1102 in the grating tank 11 by utilizing the grating net 1102, and then dropping the liquid-phase mixed garbage below the grating net 1102 in the grating tank 1;
(2) conveying the mixed garbage which is filtered to remove large-volume impurities into a water collecting tank 1, arranging a solid-liquid separator between a third submersible pump and the water collecting tank, connecting the output end of the third submersible pump with the input end of the solid-liquid separator through a pipeline, connecting the liquid phase outlet of the solid-liquid separator with the water collecting tank, and then adding a pH regulator to regulate the pH of the sewage in the water collecting tank 1 to 7-8;
(3) conveying the supernatant in the water collecting tank 1 to a first facultative tank 2, allowing the supernatant to stay in the first facultative tank 2 for a preset time, and then sequentially inputting the supernatant into a second facultative tank 3, a first aerobic tank 4 and a second aerobic tank 5 to stay for a preset time, wherein facultative microorganisms are cultured in the first facultative tank 2 and the second facultative tank 3, and aerobic microorganisms are cultured in the first aerobic tank 4 and the second aerobic tank 5;
(4) when the sewage stays in the first facultative tank 2, the second facultative tank 3, the first aerobic tank 4 and the second aerobic tank 5, introducing air for bubbling according to a preset period, so that the sewage is stirred by airflow;
(5) pumping the water body part at the bottom of the second aerobic tank 5 back to the first facultative tank 2;
(6) carrying out index detection on water bodies in the first facultative tank 2, the second facultative tank 3 and the second aerobic tank 5, at least comprising pH, temperature, COD, ammonia nitrogen, total nitrogen and dissolved oxygen indexes, and after the water body indexes in the first facultative tank 2, the second facultative tank 3 and the second aerobic tank 5 reach preset values, inputting sewage into the first facultative tank 2, and simultaneously enabling the sewage in the first facultative tank 2, the second facultative tank 3, the first aerobic tank 4 and the second aerobic tank 5 to overflow to a next tank body connected with the first facultative tank in sequence and finally overflow to the sedimentation tank 6;
(7) the method comprises the steps of separating microbial flocs and water in a sedimentation tank 6 and making the microbial flocs and the water flow back to a first facultative tank 2, enabling solids precipitated in the sedimentation tank 6 to flow back or prepare fertilizer, conveying the water in the treated sedimentation tank 6 to a transfer tank 7, conveying the water to a filtering mechanism 8 from the transfer tank 7 for filtering, and then discharging the water to the outside, wherein as a possible implementation mode, the filtering mechanism 8 is a nanofiltration system.
In addition, as a possible embodiment, further, the facultative microorganisms in the step (2) are prepared by mixing bacillus, nitrifying bacteria and denitrifying bacteria in proportion; the aerobic microorganisms comprise photoautotrophic microorganisms and photoautotrophic microorganisms, wherein the photoautotrophic microorganisms are formed by mixing chlorella, scenedesmus and spirulina in proportion, and the photoautotrophic microorganisms are formed by mixing rhodospirillum and viviparidae in proportion; as a preferred alternative, the facultative microorganisms are preferably bacillus, nitrobacteria and denitrifying bacteria mixed in a ratio of 1: 1; the photoautotrophic microorganisms are chlorella, scenedesmus and spirulina, and the chlorella and the scenedesmus are mixed according to the volume ratio of 1: 1-1.5; the photoheterotrophic microorganism is formed by mixing rhodospirillum and viviparidae in a ratio of 1: 1, and the volume ratio of the consumption of the facultative microorganism to the consumption of the photoheterotrophic microorganism is 4: 2: 1-2.
Further, as a preferred alternative, it is preferable that the bacillus, the nitrifying bacteria and the denitrifying bacteria are all cultured in an LB medium before being mixed; the chlorella and the scenedesmus are cultured by BG11 culture medium, and the spirulina is cultured by Zarrouk culture medium; the culture medium formula of the rhodospirillum and the green spirillum comprises the following components:
NH4C1 1.0 g；
CH3COONa 3.5 g；
MgCl2 0.1 g；
CaCl2 0.1 g；
KH2PO4 0.6 g；
K2HPO4 0.4 g；
0.1 g of yeast extract;
1000 ml of water;
and the pH of the medium was 7.2.
The general idea of the implementation method of the embodiment is that after solid-liquid separation is performed on mixed garbage, solid is subjected to landfill treatment, liquid sewage enters a facultative treatment system after the pH value is adjusted to 7-8, nutrient substances are treated by energetic heterotrophic bacteria such as bacillus, nitrobacteria and denitrifying bacteria and photosynthetic bacteria such as rhodospirillum rubrum and green spirillum rubrum and the like, macromolecular organic matters are decomposed, the nutrient substances stay for 16-18 days, and then the nutrient substances enter an aerobic treatment system.
The aerobic treatment system is composed of light energy autotrophic microorganisms such as chlorella, scenedesmus, spirulina and the like, the autotrophic microorganisms can utilize light energy as energy to effectively decompose and absorb pollutants and convert the pollutants into chlorine, ammonia and other gases for release, the rest is converted into the components of the microorganisms, and the concentration of indexes such as ammonia nitrogen, COD and the like in the pollutants is reduced. The aerobic system provides dissolved oxygen through equipment such as an aerator and the like, and the dissolved oxygen is controlled to be 1.7-2 mg/l. The retention time of the sewage in the aerobic treatment system is 10-12 days.
The sewage from the aerobic treatment system is separated by long-time sedimentation, and the microbial flocs in the sedimentation are collected for recycling, and can be added into the facultative treatment system and the aerobic treatment system in the previous process again, so that the waste of thalli is avoided. The mixed garbage tail water after precipitation treatment still needs a nanofiltration system, so that the effluent reaches the discharge standard.
As a specific application example, the specific implementation process flow of the present scheme may be (including related equipment, main indexes and operations):
1. the mixed garbage enters a grid pool through a conveyor belt after being collected, macromolecular solid garbage and liquid sewage are separated, and the solid garbage is subsequently used for landfill in a garbage site;
2. the sewage from the grid tank still contains a large amount of solid residues, the solid-liquid separator is used for removing residues, and the solid garbage is directly buried;
3. normally feeding the garbage tail water separated by solid-liquid separation into a water collecting tank, wherein the capacity of the water collecting tank is daily treated water amount, adding lime to adjust the mixture to about 7-8, standing for precipitation, and separating insoluble substances from supernatant liquor;
4. conveying the supernatant to a first facultative tank by using a first submersible pump, wherein the retention time of the sewage in the first facultative tank is 8 days, and then sequentially passing through a second facultative tank, a first aerobic tank and a second aerobic tank, wherein the retention time is respectively 8 days, 5-6 days and 5-6 days; facultative bacteria and aerobic bacteria specially used for degrading sewage are respectively arranged in the facultative tank and the aerobic tank, and indexes of the sewage are sequentially reduced in the flowing process until the sewage reaches the standard;
5. a reflux pump (namely a second submersible pump) is arranged in the second aerobic tank in advance and is used for refluxing the microbial strains at the rear end to the front end for reuse;
6. the first facultative tank, the second facultative tank, the first aerobic tank and the second aerobic tank are all provided with probes of pH, temperature, COD, ammonia nitrogen, total nitrogen, dissolved oxygen and flow meters, and are monitored twice at different time intervals every day, and all indexes are displayed through a PLC liquid crystal screen;
7. aeration pipelines are arranged in the first facultative tank, the second facultative tank, the first aerobic tank and the second aerobic tank and used for introducing oxygen and stirring a water body, air is generated by a blower and enters each tank body along the aeration pipelines, and the ventilation volume of the facultative tank is smaller than that of the aerobic tank;
8. the first facultative tank, the second facultative tank, the first aerobic tank and the second aerobic tank are all connected with overflow water conveying pipelines, the overflow water conveying pipelines enter from bottom to top, and the fall between the tank bodies is 4-5 cm;
9. the rear end of the second aerobic tank is connected with a sedimentation tank, the microbial floc is separated from the water body, and the settled solid is used for reflux or directly dewatered to prepare fertilizer. The capacity of the sedimentation tank is 2-2.5 times of daily treatment capacity;
10. the treated sewage enters an intermediate water tank through a sedimentation tank, and the intermediate water tank exists as a water storage tank and can store the sewage amount for 3 days;
11. and pumping the sewage in the intermediate water tank into a nanofiltration system through a nanofiltration water inlet pump, and discharging the sewage after various indexes of the sewage are reduced to be below a discharge standard through the treatment of the nanofiltration system.
The above is the embodiment of the present invention, and to the ordinary skilled in the art, according to the teaching of the present invention, the equal changes, modifications, replacements and variations of the claims should all belong to the scope of the present invention without departing from the principle and spirit of the present invention.
Claims (5)
1. A mixed waste treatment system is characterized in that: the system comprises a water collecting tank, a first facultative tank, a second facultative tank, a first aerobic tank, a second aerobic tank, a sedimentation tank, a transfer tank, a first submersible pump, a second submersible pump and a filtering mechanism; wherein the collecting tank is of a structure with an open upper end face, the top of the collecting tank is used for inputting mixed garbage to be treated, the first submersible pump is fixedly arranged in the middle of the collecting tank, the first facultative tank is internally provided with a first transmission pipe, the lower end of the first transmission pipe extends to the lower part of the first facultative tank, the upper end of the first transmission pipe is connected with the first submersible pump through a pipeline, water in the middle of the collecting tank is pumped to the lower part of the first facultative tank for inputting by the first submersible pump, the second facultative tank is internally provided with a first overflow pipe, the lower end of the first overflow pipe extends to the middle of the second facultative tank, the upper end of the first overflow pipe is communicated with the upper part of the first facultative tank, the first aerobic tank is internally provided with a second overflow pipe, the upper end of the second overflow pipe is communicated with the upper part of the second facultative tank, the second aerobic tank is internally provided with a third overflow pipe, the lower end of the third overflow pipe extends to the middle part of the second aerobic tank, the upper end of the third overflow pipe is communicated with the upper part of the first aerobic tank, a fourth overflow pipe is arranged in the sedimentation tank, the lower end of the fourth overflow pipe extends to the middle part of the sedimentation tank, the upper end of the fourth overflow pipe is communicated with the upper part of the second aerobic tank, a fifth overflow pipe is arranged in the transfer tank, the lower end of the fifth overflow pipe extends to the middle part of the transfer tank, the upper end of the fifth overflow pipe is communicated with the upper part of the sedimentation tank, and the heights of the upper ends of the first overflow pipe, the second overflow pipe, the third overflow pipe, the fourth overflow pipe and the fifth overflow; the lower part of the transfer pool is connected with an inlet pipeline of the filtering mechanism, the second submersible pump is arranged at the lower part of the second aerobic pool, the output end of the second submersible pump is connected into the first facultative tank through a pipeline, and the water body at the bottom of the second aerobic pool is pumped back into the first facultative tank by the second submersible pump.
2. A hybrid waste disposal system according to claim 1, wherein: the filtering mechanism is a nanofiltration system; the nanofiltration system comprises:
the inlet end of the nanofiltration water inlet pump is communicated with a pipeline at the lower part of the middle tank, and a first valve is arranged on the connecting pipeline;
the inlet end of the nanofiltration booster pump is connected with the outlet end pipeline of the nanofiltration water inlet pump, and a second valve is arranged on the connecting pipeline;
the inlet end of the nano-filtration tube is connected with the outlet end pipeline of the nano-filtration booster pump, the nano-filtration tube is provided with a nano-filtration circulating pump, the nano-filtration tube is provided with two outlets for outputting water filtered by the nano-filtration tube, one outlet is provided with a branch which is communicated with the outlet end of the nano-filtration booster pump and used for refluxing the water filtered by the nano-filtration tube, and the other outlet is provided with a third valve.
3. A hybrid waste disposal system according to claim 1, wherein: the aeration pipe intercommunication that it still includes the air-blower, first facultative tank, first good oxygen pond and the good pond bottom of second all be provided with the aeration pipe, the air-out end of air-blower is connected with gas transmission pipeline and this gas transmission pipeline is formed with the gas transmission branch road with aeration pipe one-to-one and sets up through gas transmission branch road and first facultative tank, second facultative tank, first good oxygen pond and the good pond bottom of second.
4. A hybrid waste disposal system according to claim 1, wherein: the water quality monitoring device is connected with three water quality detection probes, the three water quality detection probes correspond to the first facultative tank, the second facultative tank and the second aerobic tank one to one and extend to the middle or the lower part of the first facultative tank, the second facultative tank and the second aerobic tank respectively.
5. A hybrid waste disposal system according to claim 1, wherein: the garbage treatment device is characterized by further comprising a grid pond, a third submersible pump and a transmission mechanism, wherein a grid net used for filtering large-volume materials in mixed garbage is arranged on the upper portion of the grid pond, the third submersible pump is arranged on the lower portion of the grid pond, the output end of the third submersible pump is connected with the upper portion of the collecting pond through a pipeline and used for inputting the filtered mixed garbage into the collecting pond, a solid-liquid separator is further arranged between the third submersible pump and the collecting pond, the output end of the third submersible pump is connected with the input end of the solid-liquid separator through a pipeline, a liquid phase outlet of the solid-liquid separator is connected with the collecting pond, and the transmission mechanism is arranged on one side of the grid pond and used for inputting materials.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111635081A (en) * | 2020-06-30 | 2020-09-08 | 福州科力恩生物科技有限公司 | Mixed garbage treatment system and treatment method thereof |
| CN116724945A (en) * | 2023-05-10 | 2023-09-12 | 广东省乐众农业科技发展有限公司 | Fish raising system |
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2020
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111635081A (en) * | 2020-06-30 | 2020-09-08 | 福州科力恩生物科技有限公司 | Mixed garbage treatment system and treatment method thereof |
| CN116724945A (en) * | 2023-05-10 | 2023-09-12 | 广东省乐众农业科技发展有限公司 | Fish raising system |
| CN116724945B (en) * | 2023-05-10 | 2024-01-23 | 广东省乐众农业科技发展有限公司 | Fish raising system |
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