CN211284066U - Kitchen waste fermentation liquor treatment system - Google Patents
Kitchen waste fermentation liquor treatment system Download PDFInfo
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- CN211284066U CN211284066U CN201921675814.XU CN201921675814U CN211284066U CN 211284066 U CN211284066 U CN 211284066U CN 201921675814 U CN201921675814 U CN 201921675814U CN 211284066 U CN211284066 U CN 211284066U
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Abstract
The utility model relates to a kitchen garbage zymotic fluid processing system, this system includes equalizing basin, sludge dewatering system, just sink the pond, breakdown of emulsion flocculation reaction tank, air supporting pond, one-level denitrification pond, the pond is nitrified to the one-level, one sink the pond, second grade denitrification pond, the pond is nitrified to the second grade, two sink the pond, the flocculation basin, three sink the pond, oxidation pond, aeration biological filter, clean water basin, disinfection pond, discharge water basin, PAC dissolve throw the device, PAM dissolves the medication dosing device, alkali dissolves the medication dosing device, sodium carbonate dissolves the medication dosing device, disinfectant dissolves the medication dosing device and nutrient dissolves the medication dosing device. The utility model discloses can effectively solve kitchen garbage zymotic fluid treatment difficult problem, can realize that emission standard reaches sewage comprehensive emission standard.
Description
Technical Field
The utility model belongs to the sewage treatment field relates to kitchen garbage processing, in particular to kitchen garbage zymotic fluid processing system.
Background
Garbage disposal is one of supportive industries in the field of environmental protection, and the market gap is obvious at present, so that the growing space is huge. The kitchen waste treatment is an important part of the waste treatment, the industrial prospect is good, and the investment intensity is increased or decreased in the coming years.
Kitchen waste treatment in China always suffers from scaling, and accidents caused by ineffective treatment, such as swill-cooked dirty oil, waste pigs and the like, occur. These accidents are highly fatal and there is a great deal of current food safety concern and the adverse effects are multiplied. Therefore, the market demand for kitchen waste disposal is rapidly increasing. Along with the treatment of kitchen waste, high-concentration fermentation liquor generated by the kitchen waste is required to be treated, and currently, no practical technology capable of economically and effectively solving the problem of kitchen waste fermentation liquor treatment exists internationally.
Disclosure of Invention
The utility model relates to a solve and handle high concentration zymotic fluid relatively difficult among the current kitchen garbage processing technology, the treatment cost is high, efficient, it is not convenient enough to use, and application range is limited scheduling problem and has provided a design rationally, easily control, and the treatment cost is low, and the operation is nimble, and it is convenient to maintain, can economy and effectively solve kitchen garbage zymotic fluid treatment difficult problem, can realize that emission standard reaches the comprehensive emission standard's of sewage kitchen garbage zymotic fluid processing system.
The utility model discloses a realize through following technical scheme:
the kitchen waste fermentation liquor treatment system comprises a regulating tank, a sludge dewatering system, a primary sedimentation tank, a demulsification flocculation reaction tank, an air floatation tank, a primary denitrification tank, a primary nitrification tank, a primary sedimentation tank, a secondary denitrification tank, a secondary nitrification tank, a secondary sedimentation tank, a flocculation tank, a tertiary sedimentation tank, an oxidation tank, an aeration biological filter, a clean water tank, a disinfection tank, a discharge water tank, a flocculation reaction dissolving and dosing device, an alkali dissolving and dosing device, a sodium carbonate dissolving and dosing device, a disinfectant dissolving and dosing device and a nutrient dissolving and dosing device; the input end of the regulating tank is introduced with fermentation residual liquid, and the output end of the regulating tank is connected with the input end of the sludge dewatering system; the output end of the sludge dewatering system is connected with the input end of the primary sedimentation tank, the output end of the primary sedimentation tank is connected with the input end of the demulsification flocculation reaction tank, the output end of the demulsification flocculation reaction tank is connected with the input end of the air flotation tank, the output end of the air flotation tank is connected with the input end of the primary denitrification tank, the output end of the primary denitrification tank is connected with the input end of the primary nitrification tank, the output end of the primary nitrification tank is connected with the input end of the primary sedimentation tank, the output end of the primary sedimentation tank is connected with the input end of the secondary denitrification tank, the output end of the secondary denitrification tank is connected with the input end of the secondary nitrification tank, the output end of the secondary nitrification tank is connected with the input end of the secondary sedimentation tank, the output end of the secondary sedimentation tank is connected with the input end of the flocculation tank, and the output end of the flocculation tank, the output end of the three-sedimentation tank is connected with the input end of the oxidation tank, the output end of the oxidation tank is connected with the input end of the biological aerated filter, the output end of the biological aerated filter is connected with the input end of the clean water tank, the output end of the clean water tank is connected with the input end of the disinfection tank, the output end of the disinfection tank is connected with the input end of the discharge water tank, and the output end of the discharge water tank is connected to a municipal pipe network; the output end of the flocculation reaction solution dosing device is respectively connected to the dosing end of the sludge dewatering system, the dosing end of the demulsification and flocculation reaction tank and the dosing end of the flocculation tank; the output end of the alkali dissolution dosing device is connected with the dosing end of the demulsification flocculation reaction tank; the output end of the sodium carbonate solution dosing device is connected with the dosing end of the primary nitrification tank; the output end of the nutrient solution dosing device is connected with the dosing end of the secondary denitrification tank.
Kitchen garbage zymotic fluid processing system, wherein: the fermentation liquor treatment system also comprises a temporary storage pool, a first intermediate water pool, a second intermediate water pool and a PLC control unit; the output end of the sludge dewatering system is connected to the input end of the temporary storage tank, and the output end of the temporary storage tank is connected to the input end of the primary sedimentation tank; the input end of the first intermediate water tank is connected with the output end of the air floatation tank, and the output end of the first intermediate water tank is connected with the input end of the primary denitrification tank; a second intermediate water tank is also arranged between the oxidation tank and the biological aerated filter; the output end of the oxidation pond is connected to the input end of the second intermediate water pond, and the output end of the second intermediate water pond is connected to the input end of the biological aerated filter; the fermentation liquor processing system also comprises a PLC control unit; the flocculation reaction dissolved dosing device, the alkali dissolved dosing device, the sodium carbonate dissolved dosing device, the disinfectant dissolved dosing device and the nutrient dissolved dosing device are all electrically connected with the PLC control unit.
Kitchen garbage zymotic fluid processing system, wherein: liquid level sensors are arranged in the adjusting tank, the temporary storage tank, the first intermediate water tank, the second intermediate water tank and the clean water tank, and the liquid level sensors are electrically connected with the PLC control unit; the demulsification flocculation reaction tank is arranged on the front side of the flocculation tank, a mechanical stirrer is arranged in the demulsification flocculation reaction tank, and the mechanical stirrer is electrically connected with the PLC control unit; submersible mixers are arranged in the primary nitrification tank, the primary denitrification tank, the secondary nitrification tank and the secondary denitrification tank and are electrically connected with the PLC control unit; the primary sedimentation tank, the air floatation tank, the primary sedimentation tank, the secondary sedimentation tank and the tertiary sedimentation tank are all provided with a mud valve and are connected to the regulating tank through the mud valve, and the mud valve is electrically connected with the PLC control unit; the primary denitrification tank, the primary nitrification tank, the secondary denitrification tank and the secondary nitrification tank are aerated by jet aerators, and the jet aerators are connected to an external Roots blower; the second intermediate water tank and the biological aerated filter are aerated by adopting a perforated aeration device, and the perforated aeration device is connected to an external Roots blower; the filler in the biological aerated filter adopts ceramsite filler with the particle size of 10 mm.
Kitchen garbage zymotic fluid processing system, wherein: a screw pump is connected between the output end of the regulating tank and the input end of the sludge dewatering system; the screw pump is electrically connected with the PLC control unit; submersible sewage pumps are connected between the output end of the temporary storage tank and the input end of the primary sedimentation tank and between the output end of the first intermediate water tank and the input end of the primary denitrification tank; the submersible sewage pump is electrically connected with the PLC control unit; a lifting pump is arranged in the second intermediate water tank and is electrically connected with the PLC control unit; centrifugal pumps are connected between the first-stage nitrification tank and the first-stage denitrification tank, between the first-stage sedimentation tank and the first-stage denitrification tank, between the second-stage nitrification tank and the second-stage denitrification tank, between the second-stage sedimentation tank and the second-stage denitrification tank, between the output end of the second intermediate water tank and the input end of the biological aerated filter, between the output end of the biological aerated filter and the input end of the clean water tank, and between the output end of the clean water tank and the input end of the disinfection tank, and the centrifugal pumps are electrically connected with the PLC control unit; a back flush water pump is connected between the back flush input end of the biological aerated filter and the back flush output end of the clean water tank, and the back flush water pump is electrically connected with the PLC control unit; the back-flushing output end of the biological aerated filter is also connected with the first intermediate water tank.
Kitchen garbage zymotic fluid processing system, wherein: the adjusting tank is provided with a perforated aeration pipe and is connected to an external Roots blower through the perforated aeration pipe.
Kitchen garbage zymotic fluid processing system, wherein: a slag scraper is arranged at the upper part of the air floatation tank, and aeration devices are uniformly distributed at the bottom of the air floatation tank; the aeration device is connected to an external dissolved air tank, an dissolved air pump is connected between the dissolved air tank and the air floatation tank, and the dissolved air pump is electrically connected with the PLC control unit.
Has the advantages that:
the kitchen waste fermentation liquor treatment system has reasonable concept, easy control and low treatment cost, is only equal to 70-80 percent of foreign technical methods, and can be widely used in various sewage treatment processes with high-concentration organic pollution, in particular to the treatment process of kitchen waste fermentation liquor; during design, the most adverse conditions such as low temperature, high load, large-range fluctuation and the like are fully considered, and energy conservation and emission reduction are considered while sufficient design margin is reserved. The utility model discloses use big volumetric biochemical system, shock resistance is strong, to the high characteristics of ammonia nitrogen concentration, uses great reflux ratio, reinforcing denitrification, effectual degradation ammonia nitrogen and consider future to total nitrogen's control, two sets of biochemical systems that the two-stage form parallels, the operation is nimble, convenient maintenance, even there is one set of maintenance, can not cause system sewage treatment system paralysis yet.
Drawings
Fig. 1 is a schematic diagram of the kitchen waste fermentation liquid treatment system of the utility model.
Detailed Description
As shown in fig. 1, the utility model discloses kitchen waste fermentation liquid processing system, including equalizing basin 1, sludge dewatering system 2, the pond 3 of keeping in, the preliminary sedimentation tank 4, breakdown of emulsion flocculation reaction tank 5, air supporting pond 6, first middle pond 7, one-level denitrification pond 8, one-level nitrification tank 9, one sedimentation tank 10, second grade denitrification tank 11, second grade nitrification tank 12, two sedimentation tank 13, flocculation tank 14, three sedimentation tank 15, oxidation tank 16, second middle pond 17, biological aerated filter 18, clean water basin 19, disinfection pond 20, discharge water basin 21, flocculation reaction dissolve chemical dosing device, alkali dissolve chemical dosing device, sodium carbonate dissolve chemical dosing device (be used for adding sodium carbonate solution, in order to adjust the basicity in one-level nitrification tank 9, can provide the inorganic carbon source that nitrification needs simultaneously), disinfectant dissolve chemical dosing device, nutrient solution chemical dosing device and PLC the control unit; wherein, the flocculation reaction solution dosing device mainly comprises a PAC solution dosing device and a PAM solution dosing device.
The adjusting tank 1 is a fermentation liquor adjusting tank, fermentation residual liquid is introduced into the input end of the adjusting tank, and the output end of the adjusting tank is connected to the input end of the sludge dewatering system 2 through a screw pump; the output end of the sludge dewatering system 2 is connected to the input end of the temporary storage tank 3; the output end of the temporary storage tank 3 is connected to the input end of the primary sedimentation tank 4 through a submersible sewage pump; the output end of the primary sedimentation tank 4 is connected to the input end of the demulsification-flocculation reaction tank 5; the output end of the demulsification flocculation reaction tank 5 is connected to the input end of the air floatation tank 6; the output end of the air flotation tank 6 is connected to the input end of the first intermediate water tank 7; the output end of the first intermediate water tank 7 is connected to the input end of the first-stage denitrification tank 8 through a submersible sewage pump; the output end of the primary denitrification tank 8 is connected to the input end of the primary nitrification tank 9; the output end of the primary nitrification tank 9 is connected to the input end of the primary sedimentation tank 10; the output end of the primary sedimentation tank 10 is connected to the input end of the secondary denitrification tank 11; the output end of the secondary denitrification tank 11 is connected to the input end of the secondary nitrification tank 12; the output end of the secondary nitrification tank 12 is connected to the input end of the secondary sedimentation tank 13; the output end of the secondary sedimentation tank 13 is connected to the input end of the flocculation tank 14; the output end of the flocculation tank 14 is connected to the input end of the tertiary sedimentation tank 15; the output end of the tertiary sedimentation tank 15 is connected to the input end of the oxidation tank 16; the output end of the oxidation pond 16 is connected to the input end of the second intermediate water pond 17; the output end of the second intermediate water tank is connected to the input end of the biological aerated filter 18 through a centrifugal pump; the output end of the biological aerated filter 18 is connected to the input end of the clean water tank 19 through a centrifugal pump; the output end of the clean water tank 19 is connected to the input end of the disinfection tank 20; the output of the disinfection tank 20 is connected to the input of the discharge tank 21, and the output of the discharge tank 21 is connected to the municipal pipe network.
The output end of the flocculation reaction solution dosing device is respectively connected to the dosing end of the sludge dewatering system 2, the dosing end of the demulsification flocculation reaction tank 5 and the dosing end of the flocculation tank 14; the output end of the alkali solution chemical dosing device is connected to the chemical dosing end of the demulsification flocculation reaction tank 5; the output end of the sodium carbonate solution dosing device is connected to the dosing end of the primary nitrification tank 9; the output end of the nutrient solution dosing device is connected to the dosing end of the secondary denitrification tank 11, and the nutrient is fed into the secondary denitrification tank 11 according to the proportion, so that sufficient nutrients are provided for microorganisms, and the secondary denitrification reaction can be smoothly carried out.
The adjusting tank 1 is provided with a perforated aeration pipe and is connected to an external Roots blower through the perforated aeration pipe. Liquid level sensors are arranged in the adjusting tank 1, the temporary storage tank 3, the first middle water tank 7, the second middle water tank 17 and the clean water tank 19, and are electrically connected with the PLC control unit. The output end of the temporary storage tank 3 and the input end of the primary sedimentation tank 4 as well as the output end of the first intermediate water tank 7 and the input end of the first-stage denitrification tank 8 are connected with a submersible sewage pump, and the submersible sewage pump is electrically connected with a PLC control unit. A lift pump is also installed in the second intermediate water tank 17 and is electrically connected with the PLC control unit.
The demulsification flocculation reaction tank 5 is arranged on the front side of the flocculation tank 14, and the demulsification flocculation reaction tank 5 and the flocculation tank 14 jointly form a reaction flocculation precipitation system; the demulsification flocculation reaction tank 5 is internally provided with a mechanical stirrer, and the mechanical stirrer is electrically connected with the PLC control unit.
The upper part of the air floatation tank 6 is provided with a slag scraper, and the bottom of the air floatation tank is uniformly distributed with aeration devices; the aeration device is connected to a dissolved air tank beside, an dissolved air pump is connected between the dissolved air tank and the air floatation tank 6, and the dissolved air pump is electrically connected with the PLC control unit.
The first-stage denitrification tank 8, the first-stage nitrification tank 9, the second-stage denitrification tank 11 and the second-stage nitrification tank 12 are aerated by jet aerators, and the jet aerators are connected to an external Roots blower.
Centrifugal pumps are connected between the first-stage nitrification tank 9 and the first-stage denitrification tank 8, between the first sedimentation tank 10 and the first-stage denitrification tank 8, between the second-stage nitrification tank 12 and the second-stage denitrification tank 11, between the second sedimentation tank 13 and the second-stage denitrification tank 11, between the output end of the second intermediate water tank 17 and the input end of the biological aerated filter 18, between the output end of the biological aerated filter 18 and the input end of the clean water tank 19, and between the output end of the clean water tank 19 and the input end of the disinfection tank 20, and are electrically connected with a PLC control unit.
All be equipped with dive mixer in this one-level nitrification tank 9, this one-level denitrification tank 8, this second grade nitrification tank 12 and this second grade denitrification tank 11, this dive mixer is connected with the PLC control unit electricity.
The primary sedimentation tank 4, the air flotation tank 6, the primary sedimentation tank 10, the secondary sedimentation tank 13 and the tertiary sedimentation tank 15 are all provided with a mud valve and are connected to the regulating tank 1 through the mud valve, and the mud valve is electrically connected with the PLC control unit.
The second intermediate water tank 17 and the biological aerated filter 18 are aerated by a perforating aeration device which is connected to an external Roots blower; the filler in the biological aerated filter 18 is ceramsite filler with the particle size of 10 mm. A back flush water pump is connected between the back flush input end of the biological aerated filter 18 and the back flush output end of the clean water tank 19, and the back flush water pump is electrically connected with the PLC control unit; the back flush output end of the biological aerated filter 18 is also connected with the first intermediate water tank 7.
The flocculation reaction drug dissolving and feeding device, the alkali drug dissolving and feeding device, the sodium carbonate drug dissolving and feeding device, the disinfectant drug dissolving and feeding device and the nutrient drug dissolving and feeding device are all electrically connected with the PLC control unit.
The treatment method based on the garbage fermentation liquor treatment system specifically comprises the following steps;
(1) uniformly adjusting the water quality and the water quantity of the kitchen waste fermentation liquor in an adjusting tank 1;
(2) sending the fermentation liquor obtained in the step (1) after the homogenization and uniform quantity adjustment of the adjusting tank 1 into a sludge dewatering system through a screw pump for centrifugal dewatering treatment, and adding a proper amount of flocculating agent PAM (polyacrylamide) to accelerate centrifugal dewatering;
(3) automatically flowing the liquid centrifuged by the sludge dewatering system in the step (2) into a temporary storage tank 3, sending the liquid into a primary sedimentation tank 4 through a submersible sewage pump at the output end of the temporary storage tank 3, staying in the primary sedimentation tank 4 for 2-3 hours for sedimentation separation, automatically flowing the liquid subjected to sedimentation separation into a demulsification and flocculation reaction tank 5, adding proper amounts of flocculation reagents PAC (polyaluminium chloride), PAM (polyacrylamide) and alkali (sodium hydroxide) into the demulsification and flocculation reaction tank 5 for flocculation precipitation, and staying the liquid subjected to flocculation precipitation in an air flotation tank 6 for 30 minutes for air flotation oil removal;
(4) automatically flowing the liquid subjected to demulsification flocculation and air flotation oil removal treatment in the step (3) into a first intermediate water tank 7, pumping the fermentation liquid in the first intermediate water tank 7 to a primary denitrification tank 8 through a submerged sewage pump in the first intermediate water tank 7, staying in the primary denitrification tank 8 for 56-60 hours, and setting the temperature at 25 ℃ for primary denitrification reaction;
(5) automatically flowing the liquid after the first-stage denitrification reaction in the first-stage denitrification tank 8 in the step (4) into a first-stage nitrification tank 9, and staying in the first-stage nitrification tank 9 for 26-30 hours to perform the first-stage nitrification reaction;
(6) automatically flowing the liquid after the first-stage nitration reaction in the first-stage nitration tank 9 in the step (5) into a primary sedimentation tank 10 for sedimentation separation, pumping the mixed liquid in the first-stage nitration tank 9 back into a first-stage denitrification tank 8 through a centrifugal pump, and pumping the sludge generated after the sedimentation separation in the primary sedimentation tank 10 back into the first-stage denitrification tank 8 through the centrifugal pump;
(7) allowing the liquid generated after the precipitation separation in the primary sedimentation tank 10 in the step (6) to automatically flow into a secondary denitrification tank 11, staying in the secondary denitrification tank 11 for 20-24 hours, and setting the temperature at 25 ℃ for secondary denitrification reaction;
(8) automatically flowing the liquid obtained after the secondary denitrification reaction in the secondary denitrification tank 11 in the step (7) into a secondary nitrification tank 12, staying in the secondary nitrification tank 12 for 7-11 hours to perform the secondary nitrification reaction, automatically flowing the liquid obtained after the secondary nitrification reaction into a secondary sedimentation tank 13 to perform sedimentation separation, returning the mixed liquid in the secondary nitrification tank 12 into the secondary denitrification tank 11 through a centrifugal pump, and returning the sludge generated after sedimentation separation in the secondary sedimentation tank 13 into the secondary denitrification tank 11 through the centrifugal pump;
(9) the liquid generated after the sedimentation separation in the secondary sedimentation tank 13 in the step (8) automatically flows into a flocculation tank 14, a proper amount of flocculating agents PAC (polyaluminium chloride), PAM (polyacrylamide) and alkali (sodium hydroxide) are added into the flocculation tank 14 for flocculation and sedimentation, then the liquid generated by flocculation and sedimentation automatically flows into a tertiary sedimentation tank 15 for free sedimentation, then the supernatant fluid obtained after the sedimentation in the tertiary sedimentation tank 15 automatically flows into an oxidation tank 16, a proper amount of disinfectant sodium hypochlorite is added into the oxidation tank 16, hypochlorous acid is formed by sodium hypochlorite hydrolysis and is further decomposed to generate nascent oxygen with strong oxidizability, the nascent oxygen can oxidize the main protein structures of bacteria and viruses to denature and die the bacteria and viruses so as to achieve the disinfection effect, and simultaneously the nascent oxygen can further oxidize a small amount of organic pollutants in the wastewater so as to provide a better environment for the subsequent biochemical treatment, so as to improve the biodegradability of the kitchen waste fermentation liquor;
(10) the liquid after the oxidation reaction in the oxidation pond 16 in the step (9) automatically flows into a second intermediate water pond 17, the water in the second intermediate water pond 17 is sent into an aeration biological filter 18 through a centrifugal pump and is aerated by a roots blower to provide oxygen required for the survival of aerobic microorganisms in the aeration biological filter 18, then the metabolism of the microorganisms in the aeration biological filter 18 is utilized to degrade organic matters in the wastewater sent into the aeration biological filter 18, and suspended impurities in the wastewater are effectively filtered by a filter material (capable of playing a physical and biological filtering role) in the aeration biological filter 18;
(11) automatically flowing the liquid with a large amount of suspended impurities filtered out from the biological aerated filter 18 in the step (10) into a clean water tank 19, and periodically backwashing the biological aerated filter 18 by using the liquid in the clean water tank 19;
(12) and (3) automatically flowing the liquid in the clean water tank 19 in the step (11) into a disinfection tank 20, adding a disinfectant (sodium hypochlorite) into the disinfection tank 20 for disinfection, automatically flowing the liquid disinfected in the disinfection tank 20 into a discharge water tank 21, and discharging the liquid in the discharge water tank 21 into a municipal sewage pipeline after the liquid is detected to reach the standard.
And (3) conveying the solid phase separated by the sludge dewatering system in the step (2) to a sludge discharge port through a spiral conveyor belt, falling into a sludge conveying vehicle, and pulling away for outward treatment.
And (3) discharging the sludge generated by the primary sedimentation tank 4 in the step (3), the air flotation tank 6 in the step (4), the primary sedimentation tank 10 in the step (6), the secondary sedimentation tank 13 in the step (7) and the tertiary sedimentation tank 15 in the step (8) into the regulating tank 1 through the self-flowing effect.
In the step (12), the effluent of the discharge water tank 21 enters an effluent detection tank for detection, and the detected water is discharged into a municipal pipeline after reaching the standard.
The following is adopting the utility model discloses kitchen garbage zymotic fluid processing system handles the detection example that the discharge water after the practical application case goes on, what the example was selected is that a northern urban area large-scale enterprise establishes kitchen garbage zymotic fluid sewage treatment station, this monitoring methods of monitoring project, and the method is derived, uses instrument and detection limit to see table 1.
TABLE 1 monitoring methods, method references, instrumentation and detection limits
| Item | Monitoring method | Method basis | Detection limit |
| Chemical Oxygen Demand (COD) | Dichromate method | HJ-828-2017 | 4mg/L |
| Biochemical oxygen demand in five days | Dilution inoculation method | HJ-505-2009 | 0.5mg/L |
| Suspended matter | Gravimetric method | GB-11901-1989 | — |
| Total nitrogen | Ultraviolet spectrophotometry for digesting alkaline potassium persulfate | HJ-636-2012 | 0.05mg/L |
| Ammonia nitrogen | Spectrophotometry with Nas reagent | HJ-535-2009 | 0.025mg/L |
| Total phosphorus | Ammonium molybdate spectrophotometry | GB-11893-1989 | 0.01mg/L |
| Color intensity | Dilution multiple method | GB-11903-1989 | — |
| Fecal coliform population | Multi-tube fermentation process | HJ/T-347-2007 | 20/L |
| Total arsenic | Atomic fluorescence method | HJ-694-2014 | 0.3ug/L |
By using the monitoring method, the drainage of the kitchen waste fermentation liquor project applying the process is monitored, and the monitoring result, the three-level standard of Integrated wastewater discharge Standard (GB 8978-1996) and the discharge limit of the wastewater connection standard of the local wastewater treatment plant are contrasted as shown in the following table 2.
Table 2: outlet water sample monitoring result table
| Index name | Detection value | Limit value |
| COD(mg/L) | 250 | 300 |
| BOD(mg/L) | 100 | 150 |
| Ammonia nitrogen (mg/L) | 15 | 25 |
| Total phosphorus (mg/L) | 0.5 | 5 |
| SS(mg/L) | 100 | 300 |
| Animal and vegetable oil (mg/L) | 70 | 100 |
| PH | 7-8 | 6-9 |
The detection result shows that: through the kitchen waste fermentation liquor that the kitchen waste fermentation liquor treatment system of the utility model handles, quality of water reaches tertiary standard in the integrated wastewater discharge standard (GB 8978-1996). The kitchen waste fermentation liquor treatment method has good adaptability to kitchen waste fermentation liquor treatment, and the treated kitchen waste fermentation liquor meets the national discharge standard.
The utility model discloses think about rationally, the working costs is low, and the treatment effect is good, and operation control is simple, and the range of application is wide, can extensively be used for the sewage treatment process of various high concentration organic pollutions, especially to the processing procedure of kitchen garbage zymotic fluid.
Claims (6)
1. The utility model provides a kitchen garbage zymotic fluid processing system which characterized in that: the treatment system comprises a regulating tank, a sludge dewatering system, a primary sedimentation tank, a demulsification flocculation reaction tank, an air floatation tank, a primary denitrification tank, a primary nitrification tank, a primary sedimentation tank, a secondary denitrification tank, a secondary nitrification tank, a secondary sedimentation tank, a flocculation tank, a tertiary sedimentation tank, an oxidation tank, an aeration biological filter tank, a clean water tank, a disinfection tank, a discharge water tank, a flocculation reaction dissolving and dosing device, an alkali dissolving and dosing device, a sodium carbonate dissolving and dosing device, a disinfectant dissolving and dosing device and a nutrient dissolving and dosing device;
the input end of the regulating tank is introduced with fermentation residual liquid, and the output end of the regulating tank is connected with the input end of the sludge dewatering system; the output end of the sludge dewatering system is connected with the input end of the primary sedimentation tank, the output end of the primary sedimentation tank is connected with the input end of the demulsification flocculation reaction tank, the output end of the demulsification flocculation reaction tank is connected with the input end of the air flotation tank, the output end of the air flotation tank is connected with the input end of the primary denitrification tank, the output end of the primary denitrification tank is connected with the input end of the primary nitrification tank, the output end of the primary nitrification tank is connected with the input end of the primary sedimentation tank, the output end of the primary sedimentation tank is connected with the input end of the secondary denitrification tank, the output end of the secondary denitrification tank is connected with the input end of the secondary nitrification tank, the output end of the secondary nitrification tank is connected with the input end of the secondary sedimentation tank, the output end of the secondary sedimentation tank is connected with the input end of the flocculation tank, and the output end of the flocculation tank, the output end of the three-sedimentation tank is connected with the input end of the oxidation tank, the output end of the oxidation tank is connected with the input end of the biological aerated filter, the output end of the biological aerated filter is connected with the input end of the clean water tank, the output end of the clean water tank is connected with the input end of the disinfection tank, the output end of the disinfection tank is connected with the input end of the discharge water tank, and the output end of the discharge water tank is connected to a municipal pipe network;
the output end of the flocculation reaction solution dosing device is respectively connected to the dosing end of the sludge dewatering system, the dosing end of the demulsification and flocculation reaction tank and the dosing end of the flocculation tank; the output end of the alkali dissolution dosing device is connected with the dosing end of the demulsification flocculation reaction tank; the output end of the sodium carbonate solution dosing device is connected with the dosing end of the primary nitrification tank; the output end of the nutrient solution dosing device is connected with the dosing end of the secondary denitrification tank.
2. The kitchen waste fermentation broth treatment system according to claim 1, characterized in that: the fermentation liquor treatment system also comprises a temporary storage pool, a first intermediate water pool, a second intermediate water pool and a PLC control unit;
the output end of the sludge dewatering system is connected to the input end of the temporary storage tank, and the output end of the temporary storage tank is connected to the input end of the primary sedimentation tank; the input end of the first intermediate water tank is connected with the output end of the air floatation tank, and the output end of the first intermediate water tank is connected with the input end of the primary denitrification tank; a second intermediate water tank is also arranged between the oxidation tank and the biological aerated filter; the output end of the oxidation pond is connected to the input end of the second intermediate water pond, and the output end of the second intermediate water pond is connected to the input end of the biological aerated filter;
the fermentation liquor processing system also comprises a PLC control unit; the flocculation reaction dissolved dosing device, the alkali dissolved dosing device, the sodium carbonate dissolved dosing device, the disinfectant dissolved dosing device and the nutrient dissolved dosing device are all electrically connected with the PLC control unit.
3. The kitchen waste fermentation broth treatment system according to claim 2, characterized in that: liquid level sensors are arranged in the adjusting tank, the temporary storage tank, the first intermediate water tank, the second intermediate water tank and the clean water tank, and the liquid level sensors are electrically connected with the PLC control unit;
the demulsification flocculation reaction tank is arranged on the front side of the flocculation tank, a mechanical stirrer is arranged in the demulsification flocculation reaction tank, and the mechanical stirrer is electrically connected with the PLC control unit;
submersible mixers are arranged in the primary nitrification tank, the primary denitrification tank, the secondary nitrification tank and the secondary denitrification tank and are electrically connected with the PLC control unit;
the primary sedimentation tank, the air floatation tank, the primary sedimentation tank, the secondary sedimentation tank and the tertiary sedimentation tank are all provided with a mud valve and are connected to the regulating tank through the mud valve, and the mud valve is electrically connected with the PLC control unit;
the primary denitrification tank, the primary nitrification tank, the secondary denitrification tank and the secondary nitrification tank are aerated by jet aerators, and the jet aerators are connected to an external Roots blower;
the second intermediate water tank and the biological aerated filter are aerated by adopting a perforated aeration device, and the perforated aeration device is connected to an external Roots blower; the filler in the biological aerated filter adopts ceramsite filler with the particle size of 10 mm.
4. The kitchen waste fermentation broth treatment system according to claim 2, characterized in that: a screw pump is connected between the output end of the regulating tank and the input end of the sludge dewatering system; the screw pump is electrically connected with the PLC control unit;
submersible sewage pumps are connected between the output end of the temporary storage tank and the input end of the primary sedimentation tank and between the output end of the first intermediate water tank and the input end of the primary denitrification tank; the submersible sewage pump is electrically connected with the PLC control unit;
a lifting pump is arranged in the second intermediate water tank and is electrically connected with the PLC control unit;
centrifugal pumps are connected between the first-stage nitrification tank and the first-stage denitrification tank, between the first-stage sedimentation tank and the first-stage denitrification tank, between the second-stage nitrification tank and the second-stage denitrification tank, between the second-stage sedimentation tank and the second-stage denitrification tank, between the output end of the second intermediate water tank and the input end of the biological aerated filter, between the output end of the biological aerated filter and the input end of the clean water tank, and between the output end of the clean water tank and the input end of the disinfection tank, and the centrifugal pumps are electrically connected with the PLC control unit;
a back flush water pump is connected between the back flush input end of the biological aerated filter and the back flush output end of the clean water tank, and the back flush water pump is electrically connected with the PLC control unit; the back-flushing output end of the biological aerated filter is also connected with the first intermediate water tank.
5. The kitchen waste fermentation broth treatment system according to claim 2, characterized in that: the adjusting tank is provided with a perforated aeration pipe and is connected to an external Roots blower through the perforated aeration pipe.
6. The kitchen waste fermentation broth treatment system according to claim 2, characterized in that: a slag scraper is arranged at the upper part of the air floatation tank, and aeration devices are uniformly distributed at the bottom of the air floatation tank; the aeration device is connected to an external dissolved air tank, an dissolved air pump is connected between the dissolved air tank and the air floatation tank, and the dissolved air pump is electrically connected with the PLC control unit.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112851050A (en) * | 2021-03-16 | 2021-05-28 | 四川嘉博文生物科技有限公司 | Method for treating dining table residues by applying aerobic and anaerobic cooperative treatment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112851050A (en) * | 2021-03-16 | 2021-05-28 | 四川嘉博文生物科技有限公司 | Method for treating dining table residues by applying aerobic and anaerobic cooperative treatment |
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