CN111285543A - Method for quickly starting rural domestic sewage treatment device - Google Patents
Method for quickly starting rural domestic sewage treatment device Download PDFInfo
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- CN111285543A CN111285543A CN202010099792.8A CN202010099792A CN111285543A CN 111285543 A CN111285543 A CN 111285543A CN 202010099792 A CN202010099792 A CN 202010099792A CN 111285543 A CN111285543 A CN 111285543A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
- C02F3/348—Biological treatment of water, waste water, or sewage characterised by the microorganisms used characterised by the way or the form in which the microorganisms are added or dosed
Abstract
The invention discloses a method for quickly starting a rural domestic sewage treatment device, which comprises the following operation steps: 1) the sewage treatment equipment is provided with an anoxic zone, an anaerobic zone, an aerobic zone, a nitrification zone and a precipitation separation zone which are sequentially connected from front to back; 2) anaerobic fillers are filled in the anoxic zone and the anaerobic zone, and aerobic fillers are filled in the aerobic zone and the nitrification zone; 3) controlling the quality of inlet water entering the anoxic zone; 4) inoculating activated sludge in a secondary sedimentation tank in the anoxic zone and the anaerobic zone, inoculating aerobic biochemical sludge in the aerobic zone and the nitrification zone, 5) adding denitrifying bacteria, deodorizing microbial inoculum and dephosphorizing microbial inoculum in the anoxic zone and the anaerobic zone, adding nitrifying microbial inoculum in the aerobic zone and the nitrification zone, starting reflux, and returning the precipitation separation zone to the anoxic zone and the aerobic zone. The method can shorten the starting period of the sewage treatment equipment to 7 days, and the treated rural domestic sewage can reach the first-class B standard of pollutant discharge Standard of urban sewage treatment plants.
Description
Technical Field
The invention belongs to the technical field of rural point source domestic sewage treatment, and particularly relates to a method for quickly starting a rural domestic sewage treatment device.
Background
Along with the improvement of the economic and living standards, the discharge amount of rural waste water is gradually increased, and the direct discharge can influence the living environment of rural areas, especially the ecological environment of surface water. In order to ensure the life quality of rural residents, the purification treatment of rural domestic sewage is of great significance and is a necessary trend of development. The rural domestic sewage is characterized in that residents live relatively dispersedly, a drainage system is complex, and partial areas even have no drainage pipe network. Therefore, most of the current rural domestic sewage treatment devices adopt point-source small-sized sewage treatment integrated equipment, are provided with integrated purification equipment of different models according to sewage discharge amount of different villages, and adopt a biological method to purify rural domestic sewage.
The biological method purifies domestic sewage, and natural biofilm formation of microorganisms requires a long time (about 90 days) for the start-up and stabilization of a biofilm formation system. Therefore, a method for quickly starting the rural integrated purification equipment is found and searched, the system starting time is shortened, and the purification efficiency is improved, so that the method is an urgent need. The most common starting methods are a concentrated sludge inoculation culture method and a dewatered sludge inoculation culture method. The Chinese patent publication No. CN110117071A adopts a dehydrated sludge inoculation culture method, combines with equipment and technology, shortens the starting time of the equipment, and realizes that the natural biofilm formation starting period of the equipment is shortened from 90 days to about 40 days. However, for the treatment of rural domestic sewage, the 40-day start-up period is still relatively long, and a faster start-up period needs to be sought. Chinese patent publication No. CN107364955A adopts a method of filling and film hanging, and biological film hanging is completed in 10 days. Although the method has short start-up time, the nutrient (containing the medicament stock solution and the trace element stock solution) required for start-up involves a plurality of chemical reagents, the equipment is relatively dispersed, even in remote villages, the reagent of the nutrient is difficult to obtain, and the operation is complicated. Therefore, there is a need to find a more efficient and convenient method of rapid start-up.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a method for quickly starting a rural domestic sewage treatment device, the rural domestic sewage treatment device can be conveniently and quickly started by the method, the starting period is shortened, and the equipment can quickly enter the optimal purification system state for treating sewage.
The invention solves the technical problems by the following technical scheme:
the invention relates to a method for quickly starting a rural domestic sewage treatment device, which comprises the following operation steps:
1) installing debugging equipment: the rural domestic sewage treatment device is provided with an anoxic zone, an anaerobic zone, an aerobic zone, a nitrification zone and a precipitation separation zone which are sequentially connected from front to back;
2) adding a filler: anaerobic fillers are filled in the anoxic zone and the anaerobic zone, and aerobic fillers are filled in the aerobic zone and the nitrification zone;
3) controlling the quality of inlet water entering an anoxic zone: c: n is more than or equal to 3: 1 (COD: TN, mg/L), COD <400mg/L, TN <45mg/L, TP < 3.0mg/L > or less at 1.0 mg/L;
4) sludge inoculation: inoculating activated sludge in a secondary sedimentation tank in the anoxic zone and the anaerobic zone, wherein the concentration of the inoculated sludge is 2000-3000 mg/L; the aerobic area and the nitrification area are inoculated with aerobic biochemical sludge, and the concentration of the inoculated sludge is 3500-;
5) inoculating strains: denitrifying bacteria, deodorizing microbial inoculum and phosphorus removing microbial inoculum are added into the anoxic zone and the anaerobic zone, and the denitrifying bacteriaThe addition weight ratio of the deodorizing microbial inoculum to the dephosphorizing microbial inoculum is as follows: 2.5-6: 1-3: 2-5, and the total amount of the first adding is 0.5-3.0 kg/m3(ii) a Adding nitrifying bacteria into the aerobic zone and the nitrification zone, wherein the first adding amount is 0.5-2.0 kg/m3(ii) a After 1 day, adding the microbial inoculum for the second time, wherein the adding amount corresponds to 50% of the first dosage, starting reflux, and refluxing the precipitation separation zone to an anoxic zone and an aerobic zone; and (4) adding a third microbial inoculum after the day 4, wherein the adding amount corresponds to 25% of the first dose, continuing to operate, and finishing the starting of the system after the day 7-15.
In the step 2), the anaerobic filling rate of the anoxic zone and the anaerobic zone is 55-70%, and the aerobic filling rate of the aerobic zone and the nitrification zone is 20-35%.
In the step 4), the water content of the activated sludge and the aerobic biochemical sludge is 80%.
In the step 5), each microbial agent is a commercially available microbial agent, and the mass active ingredients in the microbial agents are 60-100%.
In the step 5), the reflux amount range of the reflux to the anoxic zone and the aerobic zone is 50-150%.
The method of the invention adopts a certain filling rate of the filler, a sludge inoculation mode and a staged microbial inoculum addition, can shorten the starting time of the sewage treatment equipment, the shortest time is 7 days, and the starting period is 7-15 days according to the change of growth conditions such as temperature and the like.
Compared with the prior art, the method of the invention has the following advantages:
1. the anaerobic filling rate of the invention in the anoxic zone and the anaerobic zone is 55-70%, and the aerobic filling rate of the invention in the aerobic zone and the nitrification zone is 20-35%. The proper filling rate of the filler is beneficial to filling and film forming, and biomass overload is prevented, for example, the filling and film forming difficulty is increased due to insufficient DO in an aerobic zone.
2. The invention regulates and controls the quality of the inlet water, controls the quality of the inlet water C: n is more than or equal to 3: 1, COD is less than 400mg/L, TN is less than 45mg/L, and TP is more than or equal to 1.0mg/L and less than or equal to 3.0 mg/L. The biofilm formation needs basic nutrients required by metabolism of microorganisms, and the required nutrients are prepared, so that the rapid start of the integrated sewage treatment equipment can be promoted.
3. The activated sludge is added, the water content of the adopted sludge is 80 percent, wherein the activated sludge of the secondary sedimentation tank is inoculated in the anoxic and anaerobic areas, and the concentration of the inoculated sludge is 2000-300 mg/L; aerobic biochemical sludge (such as SBR sludge) is inoculated in the aerobic zone and the nitrification zone, and the concentration of the inoculated sludge is 4000-500 mg/L. Different activated sludge sources contain different dominant floras and have different functions. Therefore, the equipment is classified and directionally added according to the specific characteristics of the activated sludge, and the biological biofilm formation is greatly promoted.
4. The microbial inoculum is added in different dosages for three times, and the first dosage is as follows: denitrifying bacteria, deodorizing microbial inoculum and dephosphorizing microbial inoculum are added into the anoxic zone and the anaerobic zone, wherein the weight ratio of the added denitrifying bacteria to the added deodorizing microbial inoculum is 2.5-6: 1-3: 2 to 5, the total amount of the added water is 0.5 to 3.0kg/m3(ii) a Adding nitrifying bacteria into the aerobic zone and the nitrification zone, wherein the adding amount is 0.5-2.0 kg/m3. After 1 day, 50% of the first dosage of related strains is added again, and the equipment starts a mixed liquor reflux system with the reflux amount of 50% -150%. After 4 days, 25% of the first dose of the related strains is added again, and the system is started after 7-15 days of continuous operation. The method avoids the problems that the microbial inoculum runs off in the operation process of equipment, and the growth is limited by accidental factors to influence the biofilm formation and the like. In addition, the growth of the biological membrane can be continuously promoted by adding the microbial inoculum each time, and the gradual and gradual addition mode not only ensures the membrane hanging effect, but also avoids the waste of the microbial inoculum dosage.
6. The invention combines activated sludge inoculation and microbial inoculum inoculation, and effectively utilizes the advantages of the activated sludge inoculation and the microbial inoculum inoculation of the activated sludge inoculation and the microbial inoculum. The addition of the activated sludge provides an adsorption nidation point for the inoculation of the microbial inoculum, promotes the growth of the target dominant flora, accelerates the formation of biofilm, and increases the stability of a biological system. The method greatly shortens the period of quick start of the rural sewage device, the shortest start period is 7 days, and the treated rural domestic sewage can reach the first-class B standard of pollutant discharge standard of urban sewage treatment plants.
Drawings
FIG. 1 is a process flow diagram of the method for rapidly starting the rural domestic sewage treatment plant according to the invention.
FIG. 2 is a schematic structural diagram of a purification tank of a rural domestic sewage treatment device MCO-B5 adopted in the embodiment of the invention, wherein the purification tank comprises a ① anoxic zone, a ② anaerobic zone, a ③ aerobic zone, a ④ nitrification zone, a ⑤ sedimentation separation zone, a ⑥ return port A, a ⑦ return port B and a ⑧ mixed liquid return pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the method of the present invention will be described in further detail below with reference to preferred examples. It should be noted, however, that the numerous details set forth in this specification are merely set forth to provide a thorough understanding of one or more aspects of the present invention and are not limited to the following examples.
As shown in figure 2, the rural domestic sewage treatment device adopted by the method is an MCO-B5 purification tank produced by the applicant, the device comprises an anoxic zone 1, an anaerobic zone 2, an aerobic zone 3, a nitrification zone 4 and a precipitation separation zone 5 which are sequentially connected from front to back, the effluent of the precipitation separation zone 5 flows back to the anoxic zone 1 and the aerobic zone 3 through a mixed liquor return pipe 8, and a return port A and a return port B are respectively arranged above the anoxic zone 1 and the aerobic zone 3.
The rural domestic sewage treatment device can also adopt the existing integrated sewage purification device, and only needs to be provided with an anoxic zone, an anaerobic zone, an aerobic zone, a nitrification zone and a precipitation separation zone.
As shown in figure 1, the method for quickly starting the rural domestic sewage treatment device comprises the following operation steps:
1) installing debugging equipment: the rural domestic sewage treatment device is arranged into an anoxic zone, an anaerobic zone, an aerobic zone, a nitrification zone and a precipitation separation zone which are sequentially connected from front to back, and is well installed and debugged.
2) Adding a filler: anaerobic fillers are filled in the anoxic zone and the anaerobic zone, and aerobic fillers are filled in the aerobic zone and the nitrification zone; the anaerobic filling rate of the anoxic zone and the anaerobic zone is 55-70%, and the aerobic filling rate of the aerobic zone and the nitrification zone is 20-35%.
3) Controlling the quality of inlet water entering an anoxic zone: c: n is more than or equal to 3: 1 (COD: TN, mg/L), COD <400mg/L, TN <45mg/L, TP < 3.0mg/L > or less at 1.0 mg/L;
4) sludge inoculation: inoculating activated sludge in a secondary sedimentation tank in the anoxic zone and the anaerobic zone, wherein the concentration of the inoculated sludge is 2000-3000 mg/L; the aerobic area and the nitrification area are inoculated with aerobic biochemical sludge, and the concentration of the inoculated sludge is 3500-; the water content of the activated sludge and the aerobic biochemical sludge is 80 percent.
5) Inoculating strains: denitrifying bacteria, a deodorizing microbial inoculum and a dephosphorizing microbial inoculum are added into the anoxic zone and the anaerobic zone, and the adding weight ratio of the denitrifying bacteria to the deodorizing microbial inoculum to the dephosphorizing microbial inoculum is as follows: 2.5-6: 1-3: 2-5, and the total amount of the first adding is 0.5-3.0 kg/m3(ii) a Adding nitrifying bacteria into the aerobic zone and the nitrification zone, wherein the first adding amount is 0.5-2.0 kg/m3(ii) a After 1 day, adding the microbial inoculum for the second time, wherein the adding amount corresponds to 50% of the first dosage, starting reflux, and refluxing the precipitation separation zone to an anoxic zone and an aerobic zone; and (4) adding a third microbial inoculum after the day 4, wherein the adding amount corresponds to 25% of the first dose, continuing to operate, and finishing the starting of the system after the day 7-15.
In the step 5), each microbial inoculum is a commercially available microbial inoculum, and the mass effective component in the microbial inoculum is 60-100%.
In the step 5), the reflux amount range of the reflux to the anoxic zone and the aerobic zone is 50-150%.
The invention adopts the filler to fill, fully utilizes the equipment space by adjusting the filler filling rate of each subarea, effectively increases the implantation sites of microorganisms and promotes biofilm formation.
The invention not only carries out quantitative matching on the filler, but also carries out regulation and control on the nutrition of the inlet water. By controlling the C/N ratio and the total phosphorus content, the basic metabolism requirement of the microorganisms is met, biofilm formation is accelerated, and the problems that the nutrition proportion of rural domestic sewage is unbalanced and the rapid growth of the microorganisms is not facilitated are solved.
The invention adopts a method combining activated sludge inoculation and microbial inoculum inoculation to carry out filler film formation. The active sludge inoculation can keep the dominant flora of the local microbial flora in the system starting process, and can promote the adsorption and the implantation of microorganisms in the filler, thereby promoting the biofilm formation. In addition, the microbial inoculum is inoculated in batches, so that the target flora is greatly promoted to become the dominant flora of the system, and a more efficient and stable biological purification system is formed.
The invention adopts a specific reflux ratio to promote the biofilm formation effect. The reflux liquid flows back to the anoxic zone and the aerobic zone, the former effectively prevents the loss of the microbial inoculum, the reflux circulation promotes the biofilm formation of the free microbial inoculum, and the latter promotes the growth and development of denitrifying bacteria in the anoxic zone and the anaerobic zone through the liquid in the reflux nitrification zone and containing nitrate nitrogen and nitrite nitrogen, thereby promoting the biofilm formation.
The following are examples of applications of the process of the invention:
example 1
The construction installation of a purification tank (the structure is shown in figure 2) of a rural sewage treatment device MCO-B5 is completed, the clear water is tested for 24 hours, the equipment is subjected to engineering quality inspection, the shell of the equipment is confirmed to be intact, each partition is intact, and the clear water of the equipment is drained after the functions of a fan aeration system and a backflow system are confirmed to be correct. Then, the filling of the device is carried out, the filling rate of the anaerobic filling of the anoxic zone and the anaerobic zone is 60 percent, and the filling rate of the aerobic filling of the aerobic zone and the nitrification zone is 25 percent. The sewage treated by the target is used as a main body, and a certain C source, a certain N source or a certain P source are added to ensure that C: n is more than or equal to 3: 1 (COD: TN, mg/L), and TP 1 mg/L. And (4) enabling the prepared sewage to enter the water inlet equipment to reach the normal running water level, and then stopping water inlet. Then inoculating sludge and strains according to a certain proportion. Wherein the anoxic anaerobic and aerobic areas are inoculated with the activated sludge of the secondary sedimentation tank, and the concentration of the inoculated sludge is 3000 mg/L; aerobic biochemical sludge (such as SBR sludge) is inoculated in the aerobic zone and the nitrification zone, and the concentration of the inoculated sludge is 5000 mg/L. Inoculating the microbial inoculum, wherein the first dosage is that denitrifying bacteria, deodorizing microbial inoculum and dephosphorizing microbial inoculum are added into an anoxic zone and an anaerobic zone, and the adding proportion is respectively 2: 1: 2, the total addition amount according to the water volume is 3.0kg/m3(ii) a Nitrifying bacteria agent is added into the aerobic zone and the nitrification zone, and the adding amount is 2.0kg/m3. After 24 hours, 50 percent of the first dose of related strains is added again, water is fed, the operation is carried out, the secondary sedimentation tank starts a reflux system to an anoxic zone and an aerobic zone, and 150 percent of reflux is started. After 3 days, 50% of the second addition of the relevant strain was added again. Equipment for directly entering rural lifeAnd after the sewage normally runs for 3 days, the quality of the effluent of the equipment can reach the first-grade B standard. The time for starting the sewage treatment apparatus can be shortened to 7 days.
Example 2
The engineering installation of the purification tank of the rural sewage treatment device MCO-B10 is completed, the clear water is tested for 24 hours, the engineering quality of the equipment is tested, the shell of the equipment is confirmed to be intact, each partition is intact, the blower aeration system and the backflow system are tested, and the clear water of the equipment is drained after the functions are confirmed to be correct. Then, the filling of the device is carried out, the filling rate of the anaerobic filling of the anoxic zone and the anaerobic zone is 60 percent, and the filling rate of the aerobic filling of the aerobic zone and the nitrification zone is 25 percent. The sewage treated by the target is used as a main body, and a certain C source, a certain N source or a certain P source are added to ensure that C: n is more than or equal to 3: 1 (COD: TN, mg/L), TP ═ 3 mg/L. And (4) enabling the prepared sewage to enter the water inlet equipment to reach the normal running water level, and then stopping water inlet. Then inoculating sludge and strains according to a certain proportion. Wherein the anoxic anaerobic and aerobic zone is inoculated with the activated sludge in the secondary sedimentation tank, and the concentration of the inoculated sludge is 2000 mg/L; aerobic biochemical sludge (such as SBR sludge) is inoculated in the aerobic zone and the nitrification zone, and the concentration of the inoculated sludge is 3500 mg/L. Inoculating the microbial inoculum, wherein the first dosage is that denitrifying bacteria, deodorizing microbial inoculum and dephosphorizing microbial inoculum are added into an anoxic zone and an anaerobic zone, and the adding proportion is respectively 2: 1: 2, the total dosage is 0.50kg/m according to the volume of water3(ii) a Adding nitrifying bacteria into the aerobic zone and the nitrification zone, wherein the adding amount is 0.50kg/m3. After 24 hours, 50 percent of the first dose of related strains is added again, water is fed, the operation is carried out, the secondary sedimentation tank starts a reflux system to an anoxic zone and an aerobic zone, and 150 percent of reflux is started. After 3 days, 50% of the second addition of the relevant strain was added again. The equipment directly enters rural domestic sewage, and the water quality of the effluent of the equipment can reach the first-grade B standard after the equipment normally operates for 11 days. The time for starting up the sewage treatment apparatus can be shortened to 15 days.
Example 3
The engineering installation of the purification tank of the rural sewage treatment device MCO-B3 is completed, the clear water is tested for 24 hours, the engineering quality of the equipment is tested, the shell of the equipment is confirmed to be intact, each partition is intact, the blower aeration system and the backflow system are tested, and the clear water of the equipment is drained after the functions are confirmed to be correct. Then the equipment is filledAnd (3) adding, wherein the anaerobic filling rate of the anoxic zone and the anaerobic zone is 60%, and the aerobic filling rate of the aerobic zone and the nitrification zone is 25%. The sewage treated by the target is used as a main body, and a certain C source, a certain N source or a certain P source are added to ensure that C: n is more than or equal to 3: 1 (COD: TN, mg/L), and TP 1.5 mg/L. And (4) enabling the prepared sewage to enter the water inlet equipment to reach the normal running water level, and then stopping water inlet. Then inoculating sludge and strains according to a certain proportion. Wherein the anoxic anaerobic and aerobic zone is inoculated with the activated sludge of the secondary sedimentation tank, and the concentration of the inoculated sludge is 2500 mg/L; aerobic biochemical sludge (such as SBR sludge) is inoculated in the aerobic zone and the nitrification zone, and the concentration of the inoculated sludge is 4400 mg/L. Inoculating the microbial inoculum, wherein the first dosage is that denitrifying bacteria, deodorizing microbial inoculum and dephosphorizing microbial inoculum are added into an anoxic zone and an anaerobic zone, and the adding proportion is respectively 2: 1: 2, the total dosage is 1.50kg/m according to the volume of water3(ii) a Adding nitrobacteria into the aerobic zone and the nitrification zone, wherein the adding amount is 1.20kg/m3. After 24 hours, 50 percent of the first dose of related strains is added again, water is fed, the operation is carried out, the secondary sedimentation tank starts a reflux system to an anoxic zone and an aerobic zone, and 150 percent of reflux is started. After 3 days, 50% of the second addition of the relevant strain was added again. The equipment directly enters rural domestic sewage, and the water quality of the effluent of the equipment can reach the first-grade B standard after the equipment normally operates for 5 days. The time for starting the sewage treatment apparatus can be shortened to 9 days.
Claims (5)
1. A method for quickly starting a rural domestic sewage treatment device is characterized by comprising the following operation steps:
1) installing debugging equipment: the rural domestic sewage treatment device is provided with an anoxic zone, an anaerobic zone, an aerobic zone, a nitrification zone and a precipitation separation zone which are sequentially connected from front to back;
2) adding a filler: anaerobic fillers are filled in the anoxic zone and the anaerobic zone, and aerobic fillers are filled in the aerobic zone and the nitrification zone;
3) controlling the quality of inlet water entering an anoxic zone: c: n is more than or equal to 3: 1 (COD: TN, mg/L), COD <400mg/L, TN <45mg/L, TP < 3.0mg/L > or less at 1.0 mg/L;
4) sludge inoculation: inoculating activated sludge in a secondary sedimentation tank in the anoxic zone and the anaerobic zone, wherein the concentration of the inoculated sludge is 2000-3000 mg/L; the aerobic area and the nitrification area are inoculated with aerobic biochemical sludge, and the concentration of the inoculated sludge is 3500-;
5) inoculating strains: denitrifying bacteria, a deodorizing microbial inoculum and a dephosphorizing microbial inoculum are added into the anoxic zone and the anaerobic zone, and the adding weight ratio of the denitrifying bacteria to the deodorizing microbial inoculum to the dephosphorizing microbial inoculum is as follows: 2.5-6: 1-3: 2-5, and the total amount of the first adding is 0.5-3.0 kg/m3(ii) a Adding nitrifying bacteria into the aerobic zone and the nitrification zone, wherein the first adding amount is 0.5-2.0 kg/m3(ii) a After 1 day, adding the microbial inoculum for the second time, wherein the adding amount corresponds to 50% of the first dosage, starting reflux, and refluxing the precipitation separation zone to an anoxic zone and an aerobic zone; and (4) adding a third microbial inoculum after the day 4, wherein the adding amount corresponds to 25% of the first dose, continuing to operate, and finishing the starting of the system after the day 7-15.
2. The method for rapidly starting the rural domestic sewage treatment device according to claim 1, wherein in the step 2), the anaerobic filling rate of the anoxic zone and the anaerobic zone is 55-70%, and the aerobic filling rate of the aerobic zone and the nitrification zone is 20-35%.
3. The method for rapidly starting the rural domestic sewage treatment plant according to claim 1 or 2, wherein the water content of the activated sludge and aerobic biochemical sludge in the step 4) is 80%.
4. The method for rapidly starting the rural domestic sewage treatment device according to claim 1 or 2, wherein in the step 5), each microbial agent is a commercially available microbial agent, and the mass effective component in the microbial agent is 60-100%.
5. The method for rapidly starting the rural domestic sewage treatment unit according to claim 1 or 2, wherein the reflux amount to the anoxic zone and the aerobic zone in the step 5) is in the range of 50% to 150%.
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| CN114349163A (en) * | 2021-12-31 | 2022-04-15 | 山西省交通新技术发展有限公司 | Starting method for treating domestic sewage based on A/O (anaerobic/anoxic/oxic) biomembrane-MBR (membrane bioreactor) process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114349163A (en) * | 2021-12-31 | 2022-04-15 | 山西省交通新技术发展有限公司 | Starting method for treating domestic sewage based on A/O (anaerobic/anoxic/oxic) biomembrane-MBR (membrane bioreactor) process |
| CN114349163B (en) * | 2021-12-31 | 2023-07-25 | 山西省交通新技术发展有限公司 | Starting method for treating domestic sewage based on A/O biological membrane-MBR process |
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