CN114835266A - Method and device for treating high-concentration TGIC wastewater - Google Patents
Method and device for treating high-concentration TGIC wastewater Download PDFInfo
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Abstract
The invention discloses a method and a device for treating high-concentration TGIC wastewater. The invention uses municipal sludge as a carbon source and a carrier to culture the composite microbial inoculum, so that various floras in the composite microbial inoculum reach an optimized state, and finally, the activated composite microbial inoculum is used for treating wastewater. Compared with the traditional method for domesticating the activated sludge outside the wastewater system, the method has the advantages that the time consumption is shorter, nitrogen is converted into nitrogen through the processes of nitrification and denitrification through the anaerobic process and the aerobic process, macromolecular carbohydrates are decomposed and converted into micromolecular inorganic carbon, and the COD (chemical oxygen demand) and the total nitrogen of the wastewater are reduced.
Description
Technical Field
The invention belongs to the technical field of wastewater treatment, and relates to a method and a device for treating high-concentration TGIC wastewater.
Background
Triglycidyl isocyanurate (TGIC) is a crystalline heterocyclic epoxy compound. Wherein three epoxy groups are very active and can be subjected to high-density crosslinking with hydroxyl groups in the polyester resin; the heterocyclic ring is stable and has excellent heat resistance, weather resistance, light resistance, corrosion resistance, chemical resistance and mechanical property. During the production process of the TGIC powder coating weather-resistant curing agent, a large amount of wastewater containing high salt and organic poisons is generated. Because the concentration of the organic matters is very high, the organic matters are difficult to directly enter a biochemical system for treatment and are discharged after reaching the standard.
Compared with the chemical method, the biological method has the characteristics of large occupied area, long reaction time, complex process, troublesome operation, special requirements on the quality of inlet water and the like, but the unit treatment cost is far lower than that of the chemical method, and the operation cost is lower. For biological treatment, anaerobic treatment or aerobic treatment is used independently, and the effluent quality is difficult to reach the national first-grade discharge standard or the treatment cost is too high. The anaerobic treatment has economic attraction to the high-concentration TGIC production wastewater, can effectively reduce the organic load of the TGIC production wastewater, improves the biodegradability and the subsequent aerobic treatment efficiency of the wastewater, and has low sludge yield and low power consumption; the start time of aerobic treatment is short, and the effluent quality is good, so the anaerobic treatment is generally adopted and then the aerobic biological treatment is connected in series, and the process is generally regarded as the most economic and reasonable treatment method at present. Because the COD concentration of waste water is high and the emission is great, adopt traditional biochemical treatment means to be difficult to high-efficient the problem of solving waste water discharge to reach standard, simultaneously, need consider the influence that N, P element is low to the microorganism probably to cause in the waste water to and the problem of handling of hazardous waste.
The invention provides a wastewater treatment method, which combines bacteria domestication and a wastewater treatment system and ensures the effluent quality of the system on the premise of high efficiency and stability.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a TGIC wastewater treatment method which is efficient, stable, economic and reasonable and has no adverse effect on the whole wastewater treatment system.
The invention is realized by the following technical scheme:
a treatment method of TGIC wastewater comprises the following steps:
step (1), domesticating microorganism composite bacteria and activated sludge;
1-1, preparing the microorganism composite bacteria into a composite microbial inoculum stock solution, activating, and then sequentially activating and culturing the activated stock solution to prepare the composite microbial inoculum active diluent. The compound microbial inoculum active diluent is a mixed solution of compound microbial inoculum stock solution, molasses and water; the composite microbial inoculum stock solution is a mixed solution of a solid microbial composite microbial inoculum, molasses and water;
the solid microbial compound inoculant comprises the following components in percentage by mass:
the other strains are used for assisting main strains (lactobacillus and prevotella) to digest and decompose various organic matters, such as photosynthetic bacteria and nitrobacteria.
Preferably, the mass ratio of the composite microbial inoculum stock solution, the molasses and the water is 1 (0.5-2) to 50;
preferably, the activation conditions of the complex microbial inoculum active diluent are as follows: culturing for 3-5 days under aerobic condition at normal temperature, wherein aeration is needed in the period of 3-5 minutes each time, and 2-4 times each day;
preferably, the culture conditions of the complex microbial inoculum active diluent are as follows: placing the activated complex microbial inoculum active diluent at the constant temperature of 28-40 ℃ for culturing for 20-48 h.
Preferably, the mass ratio of the solid microbial compound inoculant to the molasses to the water is 1 (2-10): 100;
preferably, the activation condition of the complex microbial inoculum stock solution is as follows: performing sealed activation culture for 5-10 days under the complete anaerobic condition at normal temperature;
adding tap water and the composite microbial inoculum active diluent into a domestication pool for aeration every 10-14 days before 1-2, stirring for 8-10 hours, then adding a certain amount of municipal sludge for pre-domestication, then keeping adding TGIC raw water and the composite microbial inoculum active diluent into the domestication pool for aeration every day after the pre-domestication is finished, stirring for 8-10 hours, and then adding municipal sludge for secondary domestication;
preferably, the acclimatization pond is kept in a facultative state, aeration is carried out once within 2-4 hours, and the aeration time is 10-30 minutes each time; the pH, the Dissolved Oxygen (DO) and the oxidation-reduction potential (ORP) in the domestication pond are required to be kept within a certain range, wherein the pH is 6-9, the DO is 1-3, and the ORP is 50-150 mv.
Preferably, the addition volume ratio of municipal sludge, tap water and the composite microbial inoculum active diluent in the pre-acclimation stage is 10:6: 3-1; in the secondary domestication stage, the volume ratio of the addition amount of municipal sludge, TGIC raw water and the composite microbial inoculum active diluent is 10:6: 3-1;
the TGIC raw water is TGIC wastewater discharged from a factory without any treatment.
1-3, the supernatant of the domestication tank enters a sedimentation tank in an overflow mode, and the sludge at the bottom of the sedimentation tank is domesticated sludge which can be used as domesticated composite bacteria seeds and is respectively added into an aerobic tank and an anaerobic tank of the wastewater treatment main reaction system.
And (2) adding TGIC raw water into a wastewater treatment main reaction system, setting different reaction tanks according to anaerobic and aerobic principles, and adding domesticated sludge and a composite microbial inoculum active diluent into the aerobic tank and the anaerobic tank.
Preferably, the main wastewater treatment reaction system comprises an anaerobic tank, a first aerobic tank, a second aerobic tank and a water outlet tank which are connected in sequence; and adding a composite microbial inoculum active diluent and domesticated sludge into the anaerobic tank and the aerobic tank.
Preferably, the volume ratio of the composite microbial inoculum active diluent to the domesticated sludge is 0.35-0.5: 50 to 100.
And (3) detecting the effluent of the sedimentation tank 2, and discharging after reaching the standard.
The invention also aims to provide a biochemical treatment device of TGIC wastewater, which comprises a main wastewater treatment reaction system, an acclimation tank and a sedimentation tank;
the domestication pond is provided with a municipal sludge adding port, a tap water adding port, a composite microbial inoculum active diluent adding port and a TGIC raw water adding port, the upper end of the domestication pond is provided with an overflow port, and the overflow port is connected with an inlet of the sedimentation pond; the lower end of the sedimentation tank is provided with a sludge outlet;
the wastewater treatment main reaction system comprises an anaerobic tank, a first aerobic tank, a second aerobic tank and a water outlet tank which are connected in sequence; the water outlet of the anaerobic tank is connected with the water inlet of the first aerobic tank through a pipeline, the water outlet of the first aerobic tank is connected with the water inlet of the second aerobic tank through a pipeline, and the water outlet of the second aerobic tank is connected with the water inlet of the water outlet tank through a pipeline. The anaerobic tank and the aerobic tank are both provided with a composite microbial inoculum active diluent adding port and a sludge adding port; the sludge adding ports of the anaerobic tank and the aerobic tank are connected with the sludge outlet of the sedimentation tank through pipelines.
By adopting the technical scheme, after the wastewater treatment, the COD at the water outlet end can be reduced to 2200-2400 ppm from the original 33500ppm, the wastewater discharge index is met, the efficiency is high, the stability is high, and no adverse effect is caused on the whole wastewater treatment system.
The invention directly uses municipal sludge as a carbon source and a carrier to culture the composite microbial inoculum, so that various floras in the composite microbial inoculum reach an optimized state, and the activated composite microbial inoculum is used for treating wastewater to achieve an ideal effect. Compared with the traditional method for domesticating the activated sludge outside the wastewater system, the method has shorter time consumption, nitrogen is converted into nitrogen to be discharged through anaerobic and aerobic processes, macromolecular carbohydrate is decomposed and finally converted into micromolecular inorganic carbon, and the COD (chemical oxygen demand) and the total nitrogen of the wastewater are reduced.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, municipal sludge is directly used as a carbon source and a carrier to culture the composite microbial inoculum, and the sludge domestication is placed in a wastewater treatment system, so that the domestication time of the sludge is greatly shortened, and the treatment efficiency of wastewater is greatly improved;
2. the invention adopts the composite microbial inoculum, and the activity and the adaptability of the composite microbial inoculum are greatly enhanced by specific activation culture of the stock solution and the diluent of the composite microbial inoculum, the activity of the composite microbial inoculum is kept at a higher level, and the influence of the external environment is less;
3. the invention introduces a high-concentration activated sludge method, so that various bacteria in the composite microbial inoculum can reach an optimized state, and the specific and efficient treatment of TGIC wastewater can be realized more quickly;
4. the method does not basically produce secondary pollution, has low cost and simple and convenient operation, and has higher comprehensive treatment capacity on the TGIC wastewater.
Drawings
FIG. 1 is a schematic view showing the construction of a biochemical treatment apparatus for TGIC waste water according to the present invention.
Detailed Description
The present invention will be described in detail with reference to specific examples.
FIG. 1 is a TGIC wastewater biochemical treatment device, which comprises a wastewater treatment main reaction system, a domestication tank and a sedimentation tank;
the domestication pond is provided with a municipal sludge adding port, a tap water adding port, a composite microbial inoculum active diluent adding port and a TGIC raw water adding port, the upper end of the domestication pond is provided with an overflow port, and the overflow port is connected with an inlet of the sedimentation pond; the lower end of the sedimentation tank is provided with a sludge outlet;
the wastewater treatment main reaction system comprises an anaerobic tank, a first aerobic tank, a second aerobic tank and a water outlet tank which are connected in sequence; the water outlet of the anaerobic tank is connected with the water inlet of the first aerobic tank through a pipeline, the water outlet of the first aerobic tank is connected with the water inlet of the second aerobic tank through a pipeline, and the water outlet of the submerged second aerobic tank is connected with the water inlet of the water outlet tank through a pipeline. The anaerobic tank and the aerobic tank are both provided with a composite microbial inoculum active diluent adding port and a sludge adding port; the sludge adding ports of the anaerobic tank and the aerobic tank are connected with the sludge outlet of the sedimentation tank through pipelines.
The treatment of TGIC waste water based on the above described apparatus is described in detail in the examples below.
Example 1:
(1) synthesizing a composite microbial inoculum active diluent;
uniformly mixing 1 part by weight of composite microbial inoculum, 2 parts by weight of molasses and 100 parts by weight of water to prepare a solution a; placing the solution a in an anaerobic environment for sealed culture for 5 days to obtain an activated solution a;
uniformly mixing 1 part by weight of the activated solution a, 1 part by weight of molasses and 50 parts by weight of water to prepare a solution b; placing the solution b in an aerobic environment for culturing for 3 days, aerating for 2-4 times every day, and aerating for 3-5 minutes each time to obtain an activated solution b; placing the activated solution b in an environment of 40 ℃ for constant-temperature culture for 20h to obtain a composite microbial inoculum diluent;
the solid microbial compound inoculum is prepared by mixing a plurality of bacteria according to certain mass percentage;
(2) domestication of composite bacteria and sludge;
adding 6 tons of tap water and 1 ton of the composite microbial inoculum active diluent into a 400-square domestication tank every day, aerating and stirring for 8 hours, and then adding 10 tons of municipal sludge; when the total amount of the municipal sludge, tap water and the composite microbial inoculum active diluent added in the domestication pond reaches about 200, namely 12 days continuously, 10 tons of municipal sludge, 6 tons of TGIC raw water and 1 ton of the composite microbial inoculum active diluent are added into the domestication pond every day. The acclimation pond needs to keep a facultative state, aeration is carried out once every 2 hours, and the aeration time is 10 minutes each time; in the domestication pond, the pH value is 6.0, the DO value is 2.3, and the ORP value is 60 mv.
(3) TGIC wastewater discharged from factories without any treatment is added into a wastewater treatment main reaction system shown in figure 1, different reaction tanks are arranged according to anaerobic and aerobic principles, and the main reaction system comprises an anaerobic tank, a first aerobic tank, a second aerobic tank and a water outlet tank which are connected in sequence. The domestication tank is connected with the sedimentation tank to carry out the preliminary treatment of sewage and domesticate the sludge. 75t of acclimatized sludge in a sedimentation tank and 0.35t of composite microbial inoculum active diluent are added into an aerobic tank and an anaerobic tank.
(4) And detecting the effluent of the second aerobic tank, and discharging after reaching the standard. If the index is not qualified, the reaction is carried out by continuously refluxing.
Example 2:
(1) synthesizing a composite microbial inoculum active diluent;
uniformly mixing 1 part by weight of composite microbial inoculum, 4 parts by weight of molasses and 100 parts by weight of water to prepare a solution a; placing the solution a in an anaerobic environment for sealed culture for 5 days to obtain an activated solution a;
uniformly mixing 1 part by weight of the activated solution a, 1.5 parts by weight of molasses and 50 parts by weight of water to prepare a solution b; placing the solution b in an aerobic environment for culturing for 3 days, aerating for 2-4 times every day, and aerating for 3-5 minutes each time to obtain an activated solution b; placing the activated solution b in an environment of 40 ℃ for constant-temperature culture for 20h to obtain a composite microbial inoculum diluent;
mixing the following bacteria in a mass content ratio to form a solid microbial compound inoculant;
(2) carrying out domestication of the bacteria;
adding 6 tons of tap water and 1 ton of the composite microbial inoculum active diluent into a 400-square domestication tank every day, aerating and stirring for 9 hours, and then adding 10 tons of municipal sludge; when the total amount of the municipal sludge, tap water and the composite microbial inoculum active diluent added into the domestication pond reaches about 200, namely 12 days continuously, 10 tons of municipal sludge, 6 tons of TGIC raw water and 1 ton of the composite microbial inoculum active diluent are added into the domestication pond every day. The acclimation pond needs to keep a facultative state, aeration is carried out once in 3 hours, and the aeration time is 30 minutes each time; in the domestication pond, the pH value is 6.7, the DO value is 0.9, and the ORP value is 100 mv.
(3) TGIC wastewater discharged from factories without any treatment is added into a wastewater treatment main reaction system shown in figure 1, different reaction tanks are arranged according to anaerobic and aerobic principles, and the main reaction system comprises an anaerobic tank, a first aerobic tank, a second aerobic tank and a water outlet tank which are connected in sequence. The domestication tank is connected with the sedimentation tank to carry out the preliminary treatment of sewage and domesticate the sludge. 60t of acclimated sludge in a sedimentation tank and 0.4t of composite microbial inoculum active diluent are added into an aerobic tank and an anaerobic tank.
(4) And detecting the effluent of the second aerobic tank, and discharging after reaching the standard. If the index is not qualified, the reaction is carried out by continuously refluxing.
Example 3:
(1) synthesizing a composite microbial inoculum active diluent;
uniformly mixing 1 part by weight of composite microbial inoculum, 8 parts by weight of molasses and 100 parts by weight of water to prepare a solution a; placing the solution a in an anaerobic environment for sealed culture for 5 days to obtain an activated solution a;
uniformly mixing 1 part by weight of the activated solution a, 0.5 part by weight of molasses and 50 parts by weight of water to prepare a solution b; placing the solution b in an aerobic environment for culturing for 3 days, aerating for 2-4 times every day, and aerating for 3-5 minutes each time to obtain an activated solution b; placing the activated solution b in an environment of 40 ℃ for constant-temperature culture for 20h to obtain a composite microbial inoculum diluent;
mixing the following bacteria in a mass ratio to form a solid microbial compound inoculant;
(2) domestication of composite bacteria and sludge;
adding 6 tons of tap water and 1 ton of the composite microbial inoculum active diluent into a 400-square domestication tank every day, aerating and stirring for 9 hours, and then adding 10 tons of municipal sludge; when the total amount of the municipal sludge, tap water and the composite microbial inoculum active diluent added in the domestication pond reaches about 200, namely 12 days continuously, 10 tons of municipal sludge, 6 tons of TGIC raw water and 1 ton of composite microbial inoculum active diluent are added into the domestication pond every day instead. The acclimation pond needs to keep a facultative state, aeration is carried out once in 4 hours, and the aeration time is 30 minutes each time; the pH value in the domestication pond is 6.0, and the DO value in the domestication pond is 2.3, and the ORP value in the domestication pond is 80 mv.
(3) TGIC wastewater discharged from factories without any treatment is added into a main wastewater treatment reaction system shown in figure 1, different reaction tanks are arranged according to anaerobic and aerobic principles, and the main reaction system comprises an anaerobic tank, a first aerobic tank, a second aerobic tank and a water outlet tank which are connected in sequence. The domestication tank is connected with the sedimentation tank to carry out the preliminary treatment of sewage and domesticate the sludge. 80t of acclimatized sludge in a sedimentation tank and 0.35t of composite microbial inoculum active diluent are added into an aerobic tank and an anaerobic tank.
(4) And detecting the effluent of the second aerobic tank, and discharging after reaching the standard. If the index is not qualified, the reaction is carried out by continuously refluxing.
Example 4:
(1) synthesizing a composite microbial inoculum active diluent;
uniformly mixing 1 part by weight of composite microbial inoculum, 7 parts by weight of molasses and 100 parts by weight of water to prepare a solution a; placing the solution a in an anaerobic environment for sealed culture for 5 days to obtain an activated solution a;
uniformly mixing 1 part by weight of the activated solution a, 2 parts by weight of molasses and 50 parts by weight of water to prepare a solution b; placing the solution b in an aerobic environment for culturing for 3 days, aerating for 2-4 times every day, and aerating for 3-5 minutes each time to obtain an activated solution b; placing the activated solution b in an environment of 40 ℃ for constant-temperature culture for 20h to obtain a composite microbial inoculum diluent;
mixing the following bacteria in a mass content ratio to form a solid microbial compound inoculant;
(2) domestication of composite bacteria and sludge;
adding 6 tons of tap water and 1 ton of the composite microbial inoculum active diluent into a 400-square domestication tank every day, aerating and stirring for 10 hours, and then adding 10 tons of municipal sludge; when the total amount of the municipal sludge, tap water and the composite microbial inoculum active diluent added in the domestication pond reaches about 200, namely 12 days continuously, 10 tons of municipal sludge, 6 tons of TGIC raw water and 1 ton of composite microbial inoculum active diluent are added into the domestication pond every day instead. The acclimation pond needs to keep a facultative state, aeration is carried out once in 3 hours, and the aeration time is 20 minutes each time; the pH value in the domestication pond is 6.0, and the DO value in the domestication pond is 2.6, and the ORP value in the domestication pond is 120 mv.
(3) TGIC wastewater discharged from factories without any treatment is added into a wastewater treatment main reaction system shown in figure 1, different reaction tanks are arranged according to anaerobic and aerobic principles, and the main reaction system comprises an anaerobic tank, a first aerobic tank, a second aerobic tank and a water outlet tank which are connected in sequence. The domestication tank is connected with the sedimentation tank to carry out the preliminary treatment of sewage and domesticate the sludge. 100t of acclimated sludge and 0.5t of composite microbial inoculum active diluent in a sedimentation tank are added into an aerobic tank and an anaerobic tank.
(4) And detecting the effluent of the second aerobic tank, and discharging after reaching the standard. If the index is not qualified, the reaction is carried out by continuously refluxing.
Comparative example
(1) Synthesizing a composite microbial inoculum active diluent;
uniformly mixing 1 part by weight of composite microbial inoculum, 2 parts by weight of molasses and 100 parts by weight of water to prepare a solution a; placing the solution a in an anaerobic environment for sealed culture for 5 days to obtain an activated solution a;
uniformly mixing 1 part by weight of the activated solution a, 1 part by weight of molasses and 50 parts by weight of water to prepare a solution b; placing the solution b in an aerobic environment for culturing for 3 days, aerating for 2-4 times every day, and aerating for 3-5 minutes each time to obtain an activated solution b; placing the activated solution b in an environment of 40 ℃ for constant-temperature culture for 20h to obtain a composite microbial inoculum diluent;
the solid microbial compound inoculant is prepared by mixing the following bacteria in a certain mass percentage;
(2) the acclimation of the composite bacteria and the sludge is carried out by using a high-concentration activated sludge method, as mentioned in CN 202010738900.1;
a. inoculating sludge (the sludge concentration is 1 g/L);
b. culturing and domesticating:
(i) culturing: 150 parts of sewage with lower concentration (ammonia nitrogen is less than 20mg/L, COD is less than 200mg/L) is added into a domestication pool, aeration is stopped after continuous aeration is carried out for 3 days, supernatant is discharged after static sedimentation is carried out for 2.5 hours, the water inlet aeration drainage step is repeated until the sludge sedimentation ratio (SV) is 20 percent, which indicates that the sludge is mature, and the repeated process needs 20 days;
(ii) domestication: ensuring the stability of the water quality of the incoming water, namely adopting a method of gradually increasing the water inlet amount under the condition that the ammonia nitrogen is less than 200mg/L and the COD is less than 800 mg/L. And increasing one-stage water inflow every 7 days, wherein each stage of water inflow is implemented by adopting a time control method, and each stage of water inflow is increased to 25% of the existing water inflow. The water inlet time of the domestication pond is increased from 1 hour per cycle to 2 hours per cycle in four times in one month, so that the microorganisms in the sewage are gradually adapted to the water quality of the inlet water. It takes 3 months to complete from start-up to normal operation (full load water intake).
(3) TGIC wastewater discharged from factories without any treatment is added into a wastewater treatment main reaction system shown in figure 1, different reaction tanks are arranged according to anaerobic and aerobic principles, and the main reaction system comprises an anaerobic tank, a first aerobic tank, a second aerobic tank and a water outlet tank which are connected in sequence. The domestication pond is connected with the sedimentation pond for domesticating the sludge. And (3) adding acclimated sludge and a composite microbial inoculum active diluent in the sedimentation tank for 0.35t into the aerobic tank and the anaerobic tank.
(4) And detecting the effluent of the second aerobic tank, and discharging after reaching the standard. If the index is not qualified, the reaction is carried out by continuously refluxing.
Detection method
Taking 5 different batches of TGIC wastewater, and respectively taking 10L wastewater samples, wherein 2L of each water sample is taken to measure the COD value, and the rest water samples are respectively marked as a water sample A, a water sample B, a water sample C, a water sample D and a water sample E. Then, the water sample a was processed by the procedure described in example 1, the water sample B was processed by the procedure described in example 2, the water sample C was processed by the procedure described in example 3, the water sample D was processed by the procedure described in example 4, the water sample E was processed by the procedure described in comparative example, 5 experiments were performed independently without interference, and the test results were as follows: (COD Unit ppm)
TABLE 1
| Water sample | Time required for starting to treat raw water | COD of raw water | COD of effluent | |
| Water sample A | Example 1 | 12 days | 33500 | 2200 |
| Water sample B | Example 2 | 12 days | 30243 | 2400 |
| Water sample C | Example 3 | 12 days | 31650 | 2325 |
| Water sample D | Example 4 | 12 days | 30892 | 2275 |
| Water sample E | Comparative example | 3 months old | 32165 | 2570 |
And (4) conclusion: through the test, the COD removal rate of the final effluent water of the water sample A is about 93.43%; the removal rate of COD in the final effluent of the water sample B is about 92.06%, and the removal rate of COD in the final effluent of the water sample C is about 92.65%; the removal rate of the COD of the water sample D at the final effluent is about 92.63 percent, the removal rate of the COD of the water sample E at the final effluent is about 92.00 percent, and all the water samples reach the indirect discharge standard and can be discharged. Compared with the traditional sludge domestication mode, the method can be used for treating raw water on day 12, the required time is shorter, the operation is simpler and more convenient, and the treatment efficiency of the wastewater is greatly improved. In conclusion, the invention has better comprehensive treatment capacity on TGIC wastewater.
Finally, it should be noted that: the above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It will be apparent to those skilled in the art that modifications may be made to the above-described embodiments, or equivalents may be substituted for elements thereof without departing from the spirit of the invention, and any such modifications, equivalents, improvements or additions are intended to be included within the scope of the invention.
The above embodiments are not intended to limit the present invention, and the present invention is not limited to the above embodiments, and all embodiments are within the scope of the present invention as long as the requirements of the present invention are met.
Claims (10)
1. A TGIC wastewater treatment method is characterized by comprising the following steps:
step (1), domesticating microorganism composite bacteria and activated sludge;
1-1, preparing and activating a composite microbial inoculum stock solution from the microbial composite bacteria, and then sequentially activating and culturing the activated stock solution to prepare a composite microbial inoculum active diluent; the compound microbial inoculum active diluent is a mixed solution of compound microbial inoculum stock solution, molasses and water; the composite microbial inoculum stock solution is a mixed solution of a solid microbial composite microbial inoculum, molasses and water;
the solid microbial compound bacteria comprise lactobacillus, prevotella, acetobacter, candida boidinii, veillonella and rhodospirillum;
1-2, in the pre-acclimation stage, adding tap water and the composite microbial inoculum active diluent into an acclimation pool for aeration every day, stirring for 8-10 hours, and then adding a certain amount of municipal sludge for acclimation; after pre-domestication is finished, adding TGIC raw water and the composite microbial inoculum active diluent into a domestication pool every day for aeration, stirring for 8-10 hours, and then adding municipal sludge for secondary domestication;
1-3, the supernatant of the domestication tank enters a sedimentation tank in an overflow mode, and the sludge at the bottom of the sedimentation tank is domesticated sludge which can be used as domesticated composite bacteria seeds and is respectively added into an aerobic tank and an anaerobic tank of the wastewater treatment main reaction system.
Adding TGIC raw water into a wastewater treatment main reaction system, setting different reaction tanks according to anaerobic and aerobic principles, and adding acclimated sludge and a composite microbial inoculum active diluent into an aerobic tank and an anaerobic tank;
and (3) detecting the effluent of the second aerobic tank, and discharging after reaching the standard.
2. The TGIC wastewater treatment method as claimed in claim 1, wherein the solid microorganism complex bacteria specifically comprises the following components by mass percent:
3. the method of claim 1, wherein the TGIC wastewater is treated by the following steps: the mass ratio of the composite microbial inoculum stock solution to the molasses to the water is 1 (0.5-2) to 50; the mass ratio of the solid microbial compound inoculum to the molasses to the water is 1 (2-10) to 100.
4. The method of claim 1, wherein the TGIC wastewater is treated by the following steps: the activation condition of the compound microbial inoculum active diluent is as follows: culturing for 3-5 days under aerobic condition at normal temperature, wherein aeration is needed in the period of 3-5 minutes each time and 2-4 times each day;
the culture conditions of the compound microbial inoculum active diluent are as follows: placing the activated complex microbial inoculum active diluent at the constant temperature of 28-40 ℃ for culturing for 20-48 h.
5. The method of claim 1, wherein the TGIC wastewater is treated by the following steps: the activation condition of the composite microbial inoculum stock solution is as follows: and (3) performing sealed activation culture for 5-10 days under a complete anaerobic condition at normal temperature.
6. The TGIC wastewater treatment method according to claim 1, wherein the acclimatization tank is kept in a facultative state, and aeration is performed once every 2-4 hours for 10-30 minutes; the pH, the Dissolved Oxygen (DO) and the oxidation-reduction potential (ORP) in the domestication pond are required to be kept within a certain range, wherein the pH is 6-9, the DO is 1-3, and the ORP is 50-150 mv.
7. The TGIC wastewater treatment method according to claim 1, wherein the volume ratio of the added amount of municipal sludge, tap water and the composite microbial inoculum active diluent in the pre-acclimation stage is 10:6: 3-1; the volume ratio of the added amounts of municipal sludge, TGIC raw water and the composite microbial inoculum active diluent in the secondary domestication stage is 10:6: 3-1.
8. The TGIC wastewater treatment method according to claim 1, wherein the wastewater treatment main reaction system comprises an anaerobic tank, a first aerobic tank, a second aerobic tank, and a water outlet tank, which are connected in sequence; and adding a composite microbial inoculum active diluent and domesticated sludge into the anaerobic tank and the aerobic tank.
9. The TGIC wastewater treatment method of claim 1, wherein the volume ratio of the complex microbial inoculum active diluent to the acclimated sludge is 0.35-0.5: 50 to 100.
10. A biochemical treatment device for TGIC wastewater is characterized by comprising a wastewater treatment main reaction system, a domestication tank and a sedimentation tank;
the domestication pond is provided with a municipal sludge adding port, a tap water adding port, a composite microbial inoculum active diluent adding port and a TGIC raw water adding port, the upper end of the domestication pond is provided with an overflow port, and the overflow port is connected with an inlet of the sedimentation pond; the lower end of the sedimentation tank is provided with a sludge outlet;
the wastewater treatment main reaction system comprises an anaerobic tank, a first aerobic tank, a second aerobic tank and a water outlet tank which are connected in sequence; the water outlet of the anaerobic tank is connected with the water inlet of the first aerobic tank through a pipeline, the water outlet of the first aerobic tank is connected with the water inlet of the second aerobic tank through a pipeline, and the water outlet of the second aerobic tank is connected with the water inlet of the water outlet tank through a pipeline. The anaerobic tank and the aerobic tank are both provided with a composite microbial inoculum active diluent adding port and a sludge adding port; the sludge adding ports of the anaerobic tank and the aerobic tank are connected with the sludge outlet of the sedimentation tank through pipelines.
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| JP2000271589A (en) * | 1999-03-24 | 2000-10-03 | Suzuki Motor Corp | Method for treating oil-containing drainage by activated sludge and culture medium for propagating bacteria for treating oil-containing drainage |
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| CN112079527A (en) * | 2020-09-07 | 2020-12-15 | 杭州电子科技大学 | Efficient biochemical treatment method for printing and dyeing wastewater |
| CN113754181A (en) * | 2021-08-03 | 2021-12-07 | 杭州电子科技大学 | Polyester wastewater treatment method and device |
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2022
- 2022-05-13 CN CN202210524235.5A patent/CN114835266A/en not_active Withdrawn
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|---|---|---|---|---|
| JP2000271589A (en) * | 1999-03-24 | 2000-10-03 | Suzuki Motor Corp | Method for treating oil-containing drainage by activated sludge and culture medium for propagating bacteria for treating oil-containing drainage |
| KR20030071604A (en) * | 2003-07-31 | 2003-09-03 | (주) 그린필 | Process of the treatment of high-concentrated and non-biodegradable industrial wastewater using modified-cultured facultative bacteria |
| CN111675426A (en) * | 2020-05-26 | 2020-09-18 | 杭州电子科技大学 | Polyurethane sewage treatment system and method applying composite microbial inoculum |
| CN112079527A (en) * | 2020-09-07 | 2020-12-15 | 杭州电子科技大学 | Efficient biochemical treatment method for printing and dyeing wastewater |
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