CN212610151U - Sewage treatment system - Google Patents
Sewage treatment system Download PDFInfo
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- CN212610151U CN212610151U CN202021256801.1U CN202021256801U CN212610151U CN 212610151 U CN212610151 U CN 212610151U CN 202021256801 U CN202021256801 U CN 202021256801U CN 212610151 U CN212610151 U CN 212610151U
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Abstract
The utility model discloses a sewage treatment system, which comprises a first transfer pool, an aerobic pool, a photoautotrophic pool, a sedimentation pool, a first submersible pump, a first transmission pipe and a second submersible pump, wherein the upper end surface of the first transfer pool is open, the top of the first transfer pool is used for inputting sewage to be treated, the first submersible pump is fixedly arranged in the first transfer pool, the first transmission pipe is connected with the output end pipeline of the first submersible pump and extends to the lower part of the aerobic pool, the first submersible pump pumps water in the first transfer pool to the aerobic pool, the photoautotrophic pool and the sedimentation pool are internally provided with overflow pipes which overflow step by step, the sedimentation pool carries out sedimentation treatment and discharge output on water output from the upper part of the photoautotrophic pool, the second submersible pump is arranged at the lower part of the sedimentation pool and the output end of the second submersible pump is connected to the aerobic pool through a pipeline, the second submersible pump pumps the water at the bottom of the sedimentation pool back to the aerobic pool, the scheme has low treatment cost and is environment-friendly.
Description
Technical Field
The utility model relates to a sewage treatment technical field, especially at the sewage treatment who breeds sewage, black and odorous water body field, concretely relates to sewage treatment system.
Background
The treatment of aquaculture sewage is a technical problem which is always troublesome and urgently needed to be solved in the aquaculture industry, and is related to whether aquaculture can be bred healthily, the variety and the growth benefit ratio of the aquaculture, and most of the conventional aquaculture ponds adopt a mode of regularly changing water for water treatment, so that the secondary pollution of water is easily caused, and the problems of high cost and more equipment investment are also caused.
The black and odorous water is used as a common pollution source of urban riverways, is easy to breed mosquitoes, and has great influence on the ecological environment of the riverways, so that the black and odorous water is a great problem which troubles urban environmental departments.
Disclosure of Invention
To the situation of the prior art, the utility model aims to provide an implement reliable, purify with low costs and no secondary pollution's sewage treatment system.
In order to realize the technical purpose, the utility model adopts the technical scheme that:
a sewage treatment system comprises a first transfer pool, an aerobic pool, a photoautotrophic pool, a sedimentation pool, a first submersible pump, a first transmission pipe and a second submersible pump, wherein the upper end surface of the first transfer pool is of an open structure, the top of the first transfer pool is used for inputting sewage to be treated, the first submersible pump is fixedly arranged in the first transfer pool, the first transmission pipe is connected with an output end pipeline of the first submersible pump and extends to the lower part of the aerobic pool, the first submersible pump pumps water in the first transfer pool to the aerobic pool, a first overflow pipe is arranged in the photoautotrophic pool, the lower end of the first overflow pipe extends to the middle part of the photoautotrophic pool, the upper end of the first overflow pipe is communicated with the upper part of the aerobic pool, a second overflow pipe is arranged in the sedimentation pool, the lower end of the second overflow pipe extends to the middle part of the sedimentation pool, the upper end of the second overflow pipe is communicated with the upper part of the autotrophic pool, and the sedimentation pool carries out sedimentation treatment and discharge the water output from the upper part of, and the height of the upper ends of the first overflow pipe and the second overflow pipe is gradually reduced in the horizontal direction, the second submersible pump is arranged at the lower part of the sedimentation tank, the output end of the second submersible pump is connected into the aerobic tank through a pipeline, and the water body at the bottom of the sedimentation tank is pumped back into the aerobic tank by the second submersible pump.
As a possible implementation mode, the scheme further comprises a first air blower, wherein aeration pipes are arranged at the bottoms of the aerobic pool and the photoautotrophic pool, an air outlet end of the first air blower is connected with an air conveying pipeline, and air conveying branches which correspond to the aeration pipes one by one are formed on the air conveying pipeline and are communicated with the aeration pipes arranged at the bottoms of the aerobic pool and the photoautotrophic pool through the air conveying branches.
As a possible implementation manner, the scheme further comprises a first water quality monitor, wherein the first water quality monitor is connected with two water quality detection probes, the two water quality detection probes correspond to the aerobic pool and the photoautotrophic pool one by one and extend to the middle part or the lower part of the aerobic pool and the photoautotrophic pool respectively.
As a possible superposition implementation mode for the black and odorous water body, further, the facultative tank is further separated from one side of the aerobic tank close to the first transit tank, the first transmission pipe is connected to the lower part of the facultative tank, the lower end of the third overflow pipe arranged in the aerobic tank extends to the middle part of the aerobic tank, the upper end of the third overflow pipe is communicated with the upper part of the facultative tank, and the heights of the upper ends of the third overflow pipe, the first overflow pipe and the second overflow pipe are gradually reduced in the horizontal direction.
As a better selection implementation mode, the scheme also comprises a flow guide mechanism, the upper part of the sedimentation tank is connected with the flow guide mechanism through a pipeline, a pump is arranged on the pipeline, and the water body on the upper part of the sedimentation tank is pumped to the flow guide mechanism by the pump and is discharged outside by the flow guide mechanism.
As a preferred selection implementation mode, the scheme further comprises a second air blower, wherein aeration pipes are arranged at the bottoms of the facultative tank, the aerobic tank and the photoautotrophic tank, an air outlet end of the second air blower is connected with an air conveying pipeline, and air conveying branches which correspond to the aeration pipes one by one are formed on the air conveying pipeline and are communicated with the aeration pipes arranged at the bottoms of the facultative tank, the aerobic tank and the photoautotrophic tank through the air conveying branches.
As a preferred selection implementation mode, the scheme further comprises a second water quality monitor, wherein the second water quality monitor is connected with three water quality detection probes, and the three water quality detection probes correspond to the facultative tank, the aerobic tank and the photoautotrophic tank one by one and extend to the middle or the lower part of the facultative tank, the aerobic tank and the photoautotrophic tank respectively.
In a preferred embodiment, a first check valve is arranged on a pipeline of the first submersible pump connected to the first transmission pipe.
As the above embodiment, the utility model also provides a treatment method for black and odorous water and breeding sewage (especially eel breeding sewage treatment).
The eel breeding sewage purification treatment method comprises the sewage treatment system, and comprises the following steps:
(1) conveying the eel breeding sewage into a first transfer pool to adjust the pH value of the eel breeding sewage to 7-8, and then standing, precipitating and layering the sewage;
(2) the first submersible pump conveys clear liquid in the first transfer tank into an aerobic tank for aerobic treatment for a preset time, and then the upper water body is conveyed into a photoautotrophic tank, and aerobic bacteria for degrading sewage are cultured in the aerobic tank;
(3) culturing photoautotrophic microorganisms in the photoautotrophic pool, purifying and degrading the water body input into the photoautotrophic pool by the photoautotrophic microorganisms, detecting the water quality of the water body in the photoautotrophic pool, and inputting the water body on the upper layer of the photoautotrophic pool into a sedimentation pool after the water quality of the water body reaches a preset index;
(4) inputting air into the aerobic tank and the photoautotrophic tank for bubbling, and simultaneously increasing the dissolved oxygen in water;
(5) the second submersible pump conveys the water body at the lower part of the sedimentation tank to flow back into the aerobic tank, so that the biological flocs at the lower part of the sedimentation tank are reused;
(6) after the water quality in the sedimentation tank reaches a preset standard, the water body at the upper part is discharged.
A black and odorous water body purification treatment method comprises the sewage treatment system, and comprises the following steps:
(1) introducing the black and odorous water body into a first transfer tank, conveying the black and odorous water body into a facultative tank through a first submersible pump, treating the black and odorous water body for a preset time, and then inputting the water body on the upper layer of the facultative tank into an aerobic tank, wherein facultative bacteria for degrading the black and odorous water body are cultured in the facultative tank;
(2) after the sewage is subjected to aerobic treatment in an aerobic tank for a preset time, the upper water body is input into a photoautotrophic tank;
(3) culturing photoautotrophic microorganisms in the photoautotrophic pool, purifying and degrading the water body input into the photoautotrophic pool by the photoautotrophic microorganisms, detecting the water quality of the water body in the photoautotrophic pool, and inputting the water body on the upper layer of the photoautotrophic pool into a sedimentation pool after the water quality of the water body reaches a preset index;
(4) inputting air into the facultative tank, the aerobic tank and the photoautotrophic tank for bubbling, and simultaneously improving the dissolved oxygen in water;
(5) the second submersible pump conveys the water body at the lower part of the sedimentation tank back to the facultative tank, so that the biological flocs at the lower part of the sedimentation tank are reused;
(6) after the water quality in the sedimentation tank reaches a preset standard, the water at the upper part of the sedimentation tank is discharged to a downstream river or a diversion mechanism of the downstream river.
Adopt foretell technical scheme, compared with the prior art, the utility model, its beneficial effect who has is: this scheme ingenious utilization transfer pond, good oxygen pond, photoautotrophic pond, the sedimentation tank handles sewage step by step, make sewage after purification treatment to predetermineeing the index, can overflow step by step through the overflow pipe, the gradual overflow that reaches the superior water in upper strata is arranged to another pond internal degradation purification treatment once more down, accord with outer row at last and require the back, arrange outward, and the second immersible pump in the sedimentation tank is used for carrying out backward flow purification with biological wadding group (mixed purification microorganism), greatly reduced purification microorganism's loss, the economic nature of purification treatment has 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 view showing the principle of the system of example 1 in the treatment of eel breeding wastewater;
fig. 3 is a schematic structural diagram of embodiment 2 of the present invention;
fig. 4 is a schematic diagram showing the principle of the system of embodiment 2 in the treatment of a black and odorous water body.
Detailed Description
Example 1
As shown in fig. 1, the sewage treatment system of the present embodiment includes a first transfer tank 1, an aerobic tank 2, a photoautotrophic tank 3, a sedimentation tank 4, a first submersible pump 11, a first transfer pipe 21 and a second submersible pump 41, wherein the first transfer tank 1 is of a structure with an open upper end surface, the top of the first transfer tank 1 is used for inputting sewage to be treated, the first submersible pump 11 is fixedly disposed in the first transfer tank 1, the first transfer pipe 21 is connected to an output end pipeline of the first submersible pump 11 and extends to the lower portion of the aerobic tank 2, the first submersible pump 11 pumps water in the first transfer tank 1 to the aerobic tank 2, the first submersible pump 11 is connected to the pipeline of the first transfer pipe 21 and is provided with a first check valve 12, the photoautotrophic tank 3 is provided with a first overflow pipe 31, the first overflow pipe 31 extends to the middle portion of the photoautotrophic tank 3, and the upper end thereof is communicated with the upper portion of the aerobic tank 2, sedimentation tank 4 in be provided with second overflow pipe 41, the lower extreme of this second overflow pipe 41 extends to 4 middle parts of sedimentation tank, its upper end and photoautotrophic pond 3's upper portion intercommunication, carry out sedimentation treatment and outer output of arranging by sedimentation tank 4 to the water of photoautotrophic pond 3 upper portion output, just first overflow pipe 31 and second overflow pipe 41's upper end height reduce on the horizontal direction step by step, second immersible pump 42 set up in sedimentation tank 4 lower part and its output pass through pipe connection to good oxygen pond 2 in, take out the water of 42 sedimentation tank 4 bottoms back to good oxygen pond 2 by the second immersible pump.
As a possible implementation manner, the scheme further includes a first blower 5, wherein aeration pipes 51 and 52 are disposed at the bottoms of the aerobic tank 2 and the photoautotrophic tank 3, an air outlet end of the first blower 5 is connected with an air delivery pipeline, the air delivery pipeline is formed with air delivery branches corresponding to the aeration pipes 51 and 52 one by one and communicated with the aeration pipes 51 and 52 disposed at the bottoms of the aerobic tank 2 and the photoautotrophic tank 3 through the air delivery branches, and a second check valve 53 is disposed on a pipeline connected with the air outlet end of the first blower 5.
In order to facilitate water quality monitoring, as a possible implementation manner, the system further comprises a first water quality monitor 6, wherein the first water quality monitor 6 is connected with two water quality detection probes 61 and 62, and the two water quality detection probes 61 and 62 are in one-to-one correspondence with the aerobic pool 2 and the photoautotrophic pool 3 and respectively extend to the middle part or the lower part of the aerobic pool 2 and the photoautotrophic pool 3.
With reference to fig. 2, the method for applying the system of the embodiment to the treatment of the eel breeding sewage specifically includes:
the eel breeding sewage purification treatment method comprises the sewage treatment system, and comprises the following steps:
(1) conveying the eel culture sewage into a first transfer pool 1 to adjust the pH value to 7-8, and then standing, precipitating and layering the sewage;
(2) the first submersible pump 11 conveys the clear liquid in the first transit tank 1 into the aerobic tank 2 for aerobic treatment for a preset time, and then the upper water body is conveyed into the photoautotrophic tank 3, and aerobic bacteria for degrading sewage are cultured in the aerobic tank 2;
(3) photoautotrophic microorganisms are cultured in the photoautotrophic pool 3, water input into the photoautotrophic pool is purified and degraded through the photoautotrophic microorganisms, meanwhile, the water quality of the water in the photoautotrophic pool is detected, and after the water quality of the water reaches a preset index, the water on the upper layer of the photoautotrophic pool is input into the sedimentation pool 4;
(4) inputting air into the aerobic tank 2 and the photoautotrophic tank 3 for bubbling, and simultaneously increasing the dissolved oxygen in water;
(5) the second submersible pump 42 conveys the water body at the lower part of the sedimentation tank 4 back to the aerobic tank 2, so that the biological flocs at the lower part of the sedimentation tank 4 are reused;
(6) after the water quality in the sedimentation tank 4 reaches a preset standard, the water body at the upper part is discharged.
In order to facilitate the value increase of the microorganism flocs, a filler 7 can be hung in the aerobic pool and the photoautotrophic pool 3.
The photoautotrophic mixed bacterial liquid is prepared by mixing photoautotrophic microorganisms and aerobic bacteria according to the embodiment, wherein the photoautotrophic microorganisms comprise chlorella, scenedesmus, spirulina and the like, the chlorella and scenedesmus are mixed according to the volume ratio of 1:1, the aerobic bacteria comprise dictyosphaera and porphyridium, the dictyosphaera and porphyridium are mixed according to the volume ratio of 1:1, and the photoautotrophic microorganisms and the aerobic bacteria are mixed according to the volume ratio of 2: 1-1.5 to form a mixed bacterial liquid; the microorganisms mentioned above are all provided by strain preservation libraries.
In addition, the chlorella, scenedesmus, dictyococcus and porphyridium are cultured in BG11 medium, and the spirulina is cultured in Zarrouk's medium.
The main idea of this embodiment scheme lies in through entering aerobic treatment system after adjusting the eel breeding sewage pH, through aerobe processing nutrients such as net algae, porphyridium, etc. decompose macromolecular organic matter, the period stays 2 days, later gets into photoautotrophic treatment system.
The photoautotrophic treatment system is composed of photoautotrophic microorganisms such as chlorella, scenedesmus and spirulina, the photoautotrophic microorganisms can effectively decompose and absorb pollutants by using light energy as energy and convert the pollutants into nitrogen gas, ammonia gas and other gases for release, and the rest is converted into components of the microorganisms, so that the concentration of indexes such as ammonia nitrogen, total phosphorus and the like in the pollutants is reduced. The photoautotrophic system provides dissolved oxygen through equipment such as an aerator, the dissolved oxygen is controlled to be 1.5-2 mg/l, and the retention time of sewage in the photoautotrophic treatment system is 1 day.
The sewage from the photoautotrophic treatment tank is separated by long-time precipitation, and the microbial floccules in the precipitate are collected for recycling and can be added into an aerobic treatment system in the previous procedure again, so that the waste of thalli is avoided. The supernatant sewage after the precipitation treatment reaches the discharge standard and is discharged from the water outlet.
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 normal drainage of the eel breeding sewage enters a first transfer tank (also called as a primary sedimentation tank), the capacity of the first transfer tank is daily treated water volume, lime is added to adjust the pH value to about 7-8, then the mixture is kept stand and precipitated, and insoluble substances are separated from supernatant;
2. and (3) conveying the supernatant to an aerobic tank by using a first submersible pump, wherein the sewage stays in the aerobic tank for 2-3 days, and then sequentially passes through the photoautotrophic tanks, and the stay time is 1 day respectively. Aerobic bacteria and photoautotrophic bacteria specially used for degrading sewage are respectively arranged in the aerobic pool and the photoautotrophic pool, 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 sedimentation tank in advance and is used for refluxing the microbial strains at the rear end to the front end for reuse;
4. aeration pipelines are arranged in the aerobic pool and the photoautotrophic pool for introducing oxygen and stirring the water body, and air is generated by a blower and enters each pool body along the aeration pipelines;
5. the aerobic pool and the photoautotrophic pool are respectively provided with a pH probe, a total phosphorus probe, a dissolved oxygen probe and a flow meter probe, the pH probe, the total phosphorus probe, the dissolved oxygen probe and the flow meter probe are monitored three times at different time intervals every day, and all indexes are displayed through a PLC liquid crystal screen;
6. overflow pipelines are connected in the aerobic tank and the sedimentation tank, and the overflow pipelines are arranged from bottom to top, and the fall between the tank bodies is 5-6 cm;
7. the rear end of the photoautotrophic oxygen pool is connected with a sedimentation pool, the microbial floccule is separated from the water body, and the precipitated solid is used for reflux or directly dewatered to prepare fertilizer; the capacity of the sedimentation tank is one time of daily treatment capacity;
8. after the sedimentation is finished in the sedimentation tank, various indexes of the sewage are reduced to be below the discharge standard, and the sewage is discharged after reaching the standard;
9. a large amount of immobilized fillers are filled in the aerobic tank and the photoautotrophic tank and are used for enriching microorganisms, so that the microorganisms are prevented from being largely lost along with water flow.
Example 2
As shown in fig. 3, the present embodiment is substantially the same as embodiment 1, the sewage treatment system of the present embodiment includes a first transfer tank 1, a facultative tank 8, an aerobic tank 2, a photoautotrophic tank 3, a sedimentation tank 4, a first submersible pump 11, a first transfer pipe 21 and a second submersible pump 41, the first transfer tank 1 is of a structure with an open upper end surface, the top of the first transfer tank 1 is used for inputting sewage to be treated, the first submersible pump 11 is fixedly disposed in the first transfer tank 1, the first transfer pipe 21 is connected with an output end pipeline of the first submersible pump 11, the first transfer pipe 21 is connected to the lower portion of the facultative tank 8, the first submersible pump 11 pumps water in the first transfer tank 1 to the facultative tank 8, the pipeline of the first submersible pump 11 connected to the first transfer pipe 21 is provided with a first check valve 12, a third overflow pipe 22 is disposed in the aerobic tank 3, and the lower end of the third overflow pipe 22 extends to the middle portion of the aerobic tank 2, the upper end of the first submerged pump 11 is communicated with the upper part of the facultative tank 8, a first check valve 12 is arranged on a pipeline connected to the first transmission pipe 21, a first overflow pipe 31 is arranged in the photoautotrophic tank 3, the lower end of the first overflow pipe 31 extends to the middle part of the photoautotrophic tank 3, the upper end of the first submerged pump is communicated with the upper part of the aerobic tank 2, a second overflow pipe 41 is arranged in the sedimentation tank 4, the lower end of the second overflow pipe 41 extends to the middle part of the sedimentation tank 4, the upper end of the second overflow pipe is communicated with the upper part of the photoautotrophic tank 3, the sedimentation tank 4 carries out sedimentation treatment and outward discharge output on the water output from the upper part of the photoautotrophic tank 3, the heights of the upper ends of the third overflow pipe 22, the first overflow pipe 31 and the second overflow pipe 41 are gradually reduced in the horizontal direction, the second submerged pump 42 is arranged at the lower part of, the water body at the bottom of the sedimentation tank 4 is pumped back 42 into the aerobic tank 2 by a second submersible pump.
In addition, in order to facilitate the derivation of the black and odorous water body, as a preferred selection implementation mode, the scheme further includes a diversion mechanism 8 (specifically, a second transfer tank, a diversion ditch or other river branches and other structures), the upper part of the sedimentation tank 4 is connected with the diversion mechanism 8 through a pipeline, a pump 81 (water pump) is arranged on the pipeline, and the water body on the upper part of the sedimentation tank 4 is pumped to the diversion mechanism 8 by the pump 81 and is discharged outside by the diversion mechanism 8.
In order to facilitate mixing and adjusting the dissolved oxygen in the tank, as a preferred selection implementation mode, the scheme further comprises a second air blower 5, wherein the bottom parts of the facultative tank 8, the aerobic tank 2 and the photoautotrophic tank 3 are respectively provided with an aerator pipe 51, an aerator pipe 52 and an aerator pipe 54, the air outlet end of the second air blower 5 is connected with an air transmission pipeline, the air transmission pipeline is provided with air transmission branches which are in one-to-one correspondence with the aerator pipes 51, 52 and 54 and are communicated with the aerator pipes 51, 52 and 53 arranged at the bottom parts of the facultative tank 8, the aerobic tank 2 and the photoautotrophic tank 3 through the air transmission branches, and a second check valve 53 is arranged on a pipeline connected with the air outlet end of the second air blower.
As a preferred embodiment, the system further comprises a second water quality monitor, wherein the second water quality monitor 6 is connected with three water quality detecting probes 61, 62 and 63, and the three water quality detecting probes 61, 62 and 63 are in one-to-one correspondence with the facultative tank 8, the aerobic tank 2 and the photoautotrophic tank 3 and respectively extend to the middle part or the lower part of the facultative tank 8, the aerobic tank 2 and the photoautotrophic tank 3.
As shown in fig. 4, the present invention also provides a method for treating black and odorous water according to the above embodiment.
A black and odorous water body purification treatment method comprises the sewage treatment system, and comprises the following steps:
(1) introducing the black and odorous water body into a first transfer tank 1, conveying the black and odorous water body into a facultative tank 8 through a first submersible pump 11, treating the black and odorous water body for a preset time, and then continuously conveying the water body into the facultative tank 8 to enable the water body on the upper layer to overflow into an aerobic tank 2 for aerobic treatment, wherein facultative bacteria for degrading the black and odorous water body are cultured in the facultative tank 8;
(2) after the sewage is subjected to aerobic treatment in the aerobic tank 2 for a preset time, the upper water body is input into the photoautotrophic tank 3;
(3) photoautotrophic microorganisms are cultured in the photoautotrophic pool 3, water input into the photoautotrophic pool 3 is purified and degraded through the photoautotrophic microorganisms, meanwhile, the water quality of the water in the photoautotrophic pool is detected, and after the water quality reaches a preset index, the water on the upper layer of the photoautotrophic pool 3 is input into the sedimentation pool 4;
(4) inputting air into the facultative tank 8, the aerobic tank 2 and the photoautotrophic tank 3 for bubbling, and simultaneously improving the dissolved oxygen in water;
(5) the second submersible pump 42 conveys the water body at the lower part of the sedimentation tank 4 back to the facultative tank 8, so that the biological flocs at the lower part of the sedimentation tank 4 are reused;
(6) after the water quality in the sedimentation tank 4 reaches the preset standard, the water at the upper part is discharged to a downstream river channel or a diversion mechanism 8 of the downstream river channel.
In order to facilitate the value increase of the microorganism flocs, a filler 7 can be hung in the aerobic pool and the photoautotrophic pool 3.
The photoautotrophic mixed bacterial liquid consists of photoautotrophic microorganisms and facultative aerobes, the photoautotrophic microorganisms consist of chlorella, scenedesmus and spirulina, the chlorella and scenedesmus are mixed according to the volume ratio of 1:1, the facultative aerobes are chemoheterotrophic bacteria and are formed by mixing bacillus, nitrobacteria and denitrifying bacteria according to the bacterial liquid volume ratio of 1:1:1, and the photoautotrophic microorganisms and the chemoheterotrophic bacteria are mixed according to the volume ratio of 2: 1-1.5 to form mixed bacterial liquid.
The bacillus, the nitrifying bacteria and the denitrifying bacteria are all cultured by using an LB culture 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 main idea of the scheme of the embodiment is that black and odorous water is discharged into the facultative treatment system and passes through bacillus,
Treating nutrient substances by heterotrophic bacteria such as nitrifying bacteria and denitrifying bacteria, decomposing macromolecular organic substances, staying for 2 days, and then entering an aerobic treatment system; the flora in the aerobic pool is composed of photoautotrophic microorganisms such as chlorella, scenedesmus and spirulina, the autotrophic microorganisms can effectively decompose and absorb pollutants by using light energy as energy and convert the pollutants into nitrogen, ammonia and other gases for release, and the rest is converted into the components of the microorganisms, so that the concentration of ammonia nitrogen indexes 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 1-2 days.
The sewage from the aerobic treatment tank is separated through 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.
As a specific application example, the specific implementation process flow of the present scheme may be (including related equipment, main indexes and operations):
1. conveying the black and odorous water body liquid of the upstream riverway to a facultative tank by using a drainage pump, wherein the retention time of sewage in the facultative tank is 2 days, and then sequentially passing through an aerobic tank, a photoautotrophic tank and a sedimentation tank, wherein the retention time is 1 day, 1-1.5 days and 1-1.5 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;
2. the sedimentation tank is provided with a second submersible pump and is used for discharging the treated river water to the downstream of the river again or refluxing the microorganisms collected by the sedimentation tank to the facultative tank for recycling;
3. the facultative tank, the aerobic tank and the photoautotrophic tank are all provided with aeration pipelines for introducing oxygen and stirring water, 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 and the photoautotrophic tank;
4. the facultative tank, the aerobic tank and the photoautotrophic tank are all filled with biofilm culturing filler for adsorbing microorganisms, so that the added microorganisms are prevented from being largely lost along with the water body;
5. the facultative tank and the aerobic tank are respectively provided with a pH, ammonia nitrogen, dissolved oxygen and a flow meter probe, the pH, ammonia nitrogen, dissolved oxygen and flow meter 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 facultative tank, the aerobic tank and the photoautotrophic tank are all connected with water conveying pipelines, and the water conveying pipelines are arranged from bottom to top, and the fall between the tank bodies is 4-5 cm;
7. the rear end of the photoautotrophic pool is connected with a sedimentation pool, the microbial floccule is separated from the water body, and the precipitated solid is used for reflux or direct dewatering to prepare fertilizer. The capacity of the sedimentation tank is 1-2 times of daily treatment capacity.
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 (8)
1. Sewage treatment system, its characterized in that: the device comprises a first transfer pool, an aerobic pool, a photoautotrophic pool, a sedimentation pool, a first submersible pump, a first transmission pipe and a second submersible pump, wherein the first transfer pool is of an open structure at the upper end face, the top of the first transfer pool is used for inputting sewage to be treated, the first submersible pump is fixedly arranged in the first transfer pool, the first transmission pipe is connected with an output end pipeline of the first submersible pump and extends to the lower part of the aerobic pool, a water body in the first transfer pool is pumped to the aerobic pool by the first submersible pump, a first overflow pipe is arranged in the photoautotrophic pool, the lower end of the first overflow pipe extends to the middle part of the photoautotrophic pool, the upper end of the first overflow pipe is communicated with the upper part of the aerobic pool, a second overflow pipe is arranged in the sedimentation pool, the lower end of the second overflow pipe extends to the middle part of the sedimentation pool, the upper end of the second overflow pipe is communicated with the upper part of the photoautotrophic pool, and the sedimentation pool carries out sedimentation treatment and discharge output, and the height of the upper ends of the first overflow pipe and the second overflow pipe is gradually reduced in the horizontal direction, the second submersible pump is arranged at the lower part of the sedimentation tank, the output end of the second submersible pump is connected into the aerobic tank through a pipeline, and the water body at the bottom of the sedimentation tank is pumped back into the aerobic tank by the second submersible pump.
2. The wastewater treatment system according to claim 1, wherein: the air outlet end of the first air blower is connected with an air conveying pipeline, air conveying branches which correspond to the aeration pipes one by one are formed on the air conveying pipeline, and the air conveying pipeline is communicated with the aeration pipes arranged at the bottoms of the aerobic pool and the photoautotrophic pool through the air conveying branches.
3. The sewage treatment system of claim 1 or 2, wherein: the system also comprises a first water quality monitor, wherein the first water quality monitor is connected with two water quality detection probes, the two water quality detection probes correspond to the aerobic pool and the photoautotrophic pool one by one and extend to the middle part or the lower part of the aerobic pool and the photoautotrophic pool respectively.
4. The wastewater treatment system according to claim 1, wherein: the aerobic tank is close to one side of the first transfer tank and still separates out the facultative tank, the first transmission pipe for being connected to the facultative tank lower part, the aerobic tank in be provided with the lower extreme of third overflow pipe and extend to the aerobic tank middle part, its upper end and facultative tank upper portion intercommunication, just the upper end height of third overflow pipe, first overflow pipe and second overflow pipe reduce on the horizontal direction step by step.
5. The wastewater treatment system according to claim 4, wherein: the water body at the upper part of the sedimentation tank is pumped to the flow guide mechanism by the pump and is discharged outside by the flow guide mechanism.
6. The sewage treatment system of claim 4 or 5, wherein: the aerobic pool, the facultative tank and the photoautotrophic pool are all provided with aeration pipes at the bottom, the air outlet end of the second blower is connected with a gas transmission pipeline, the gas transmission pipeline is provided with gas transmission branches which are in one-to-one correspondence with the aeration pipes, and the gas transmission branches are communicated with the aeration pipes arranged at the bottom of the facultative tank, the aerobic pool and the photoautotrophic pool.
7. The wastewater treatment system according to claim 6, wherein: the system also comprises a second water quality monitor, wherein the second water quality monitor is connected with three water quality detection probes, and the three water quality detection probes correspond to the facultative tank, the aerobic tank and the photoautotrophic tank one by one and extend to the middle part or the lower part of the facultative tank, the aerobic tank and the photoautotrophic tank respectively.
8. The wastewater treatment system according to claim 1 or 4, wherein: and a first check valve is arranged on a pipeline of the first submersible pump connected to the first transmission pipe.
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| CN202021256801.1U CN212610151U (en) | 2020-06-30 | 2020-06-30 | Sewage treatment system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111635080A (en) * | 2020-06-30 | 2020-09-08 | 福州科力恩生物科技有限公司 | Sewage treatment system and application thereof in purification of breeding sewage and black and odorous water |
| 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 |
|---|---|---|---|---|
| CN111635080A (en) * | 2020-06-30 | 2020-09-08 | 福州科力恩生物科技有限公司 | Sewage treatment system and application thereof in purification of breeding sewage and black and odorous water |
| 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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