CN213327241U - Kitchen wastewater treatment system - Google Patents
Kitchen wastewater treatment system Download PDFInfo
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- CN213327241U CN213327241U CN202022169703.0U CN202022169703U CN213327241U CN 213327241 U CN213327241 U CN 213327241U CN 202022169703 U CN202022169703 U CN 202022169703U CN 213327241 U CN213327241 U CN 213327241U
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Abstract
The utility model relates to a processing system of meal kitchen waste water, including the equalizing basin, the equalizing basin passes through the pipeline and communicates in proper order with swash plate oil interceptor, electrocoagulation air supporting pond and oxygen deficiency pond, the oxygen deficiency pond adopts the baffle separation with good oxygen pond and membrane separation pond in proper order, and the membrane separation pond communicates in proper order with two sedimentation tanks, pH equalizing basin, Fenton oxidation system through the pipeline, Fenton oxidation system is equipped with reaction tank, neutralization tank in proper order, blows off pond and flocculation basin, and the flocculation basin communicates in proper order through pipeline and plate frame filter and drainage tank. Adopt the utility model discloses arrange kitchen waste water in the equalizing basin and enter into the waste water behind the swash plate oil interceptor skimming upper oil residue, enter into electrocoagulation air supporting pond, utilize electrocoagulation, electric superficial with grease and waste water separation. Wastewater at the bottom of the electrocoagulation-floatation tank enters an anoxic tank, an aerobic tank and a membrane separation tank for efficient denitrification and carbon removal, then enters two sedimentation tanks for sedimentation and separation, and enters a Fenton oxidation system for deep oxidation treatment after the pH is adjusted.
Description
Technical Field
The utility model belongs to the technical field of fluosilicic acid, a processing system of meal kitchen waste water is related to.
Background
With the improvement of the living standard of people and the development of the tap water of rural areas, the amount of the kitchen waste water discharged by families is larger and larger, and the harm to the environment is more and more serious. The waste water generated in the kitchen waste treatment process has complex water quality, has the characteristics of high ammonia nitrogen, high COD, high salinity, high SS and the like, has higher treatment difficulty, particularly contains nitrogen with higher concentration in the kitchen waste water, and can cause water eutrophication if the kitchen waste water is not subjected to deep treatment and is discharged at will. CN201811164423.1 discloses a kitchen wastewater treatment method and device, which can make full use of the sinking characteristic of ferromagnetic substance to improve the removal effect of ferromagnetic substance and increase the path of magnetic force absorbing ferromagnetic substance. However, the apparatus only focuses on how the grease flocs separate, but there is no in-depth study on the later oil and wastewater treatment.
Disclosure of Invention
In order to solve the technical problem, the utility model provides a processing system of meal kitchen waste water, with the grease separation recovery in the meal kitchen waste water, waste water is handled and is discharged after qualified.
The scheme of the utility model is that:
the utility model provides a processing system of meal kitchen waste water, includes the equalizing basin, and the equalizing basin passes through the pipeline and communicates in proper order with swash plate oil interceptor, electrocoagulation air supporting pond and oxygen deficiency pond, the oxygen deficiency pond adopts the baffle separation in proper order with good oxygen pond and membrane separation pond, and the membrane separation pond communicates in proper order with two sedimentation tanks, pH equalizing basin, Fenton oxidation system through the pipeline, Fenton oxidation system is equipped with reaction tank, neutralization tank in proper order, blows off pond and flocculation basin, and the flocculation basin communicates in proper order through pipeline and plate and frame filter and drainage tank.
Preferably, the reaction tank is respectively communicated with the ferrous ion storage tank and the hydrogen peroxide storage tank through pipelines.
Preferably, the surfaces of the inclined plate oil separation tank and the electrocoagulation floatation tank are sequentially communicated with a sewage tank and a waste oil recoverer through pipelines, and a waste water outlet of the waste oil recoverer is communicated with the regulating tank through a pipeline.
Further preferably, the dirty oil tank is communicated with the regulating reservoir through a pipeline.
Further preferably, the waste oil recoverer is communicated with the filter press through a pipeline.
Further preferably, the electrocoagulation-floatation tank is electrically connected with a power supply.
Further preferably, the electrocoagulation air flotation tank is internally provided with 15 cathode plates and 7 anode plates which are alternately arranged at equal intervals, wherein the number of the cathode plates is 8 and the number of the anode plates is 7.
Preferably, a stirrer is arranged at the middle rear part in the reaction tank.
Preferably, the neutralization tank is communicated with a sodium hydroxide storage tank through a pipeline, and the flocculation tank is communicated with a flocculant storage tank through a pipeline.
The utility model discloses beneficial effect:
1. the utility model discloses arrange kitchen waste water in the equalizing basin and enter into the waste water after swash plate oil interceptor skimming upper oil residue, enter into electrocoagulation air supporting pond, utilize electrocoagulation, electric superficial to condense grease and enter into the sump oil case after electrocoagulation air supporting pond top layer and stew, reentrant waste oil recoverer recovery animal vegetable oil. The wastewater at the bottom of the electrocoagulation-floatation tank enters an anoxic tank, an aerobic tank and a membrane separation tank for high-efficiency denitrification and decarbonization, and the effluent COD and NH4+The average removal rate of N, TN is 95.68%, 99.78% and 79.43% respectively, the wastewater enters a secondary sedimentation tank for sedimentation and separation, the pH value is adjusted to 4-5.5 in a pH adjusting tank, and the wastewater enters a Fenton oxidation system for deep oxidation treatment, and the effluent quality can reach the primary standard of the GB 8978-1996 wastewater comprehensive discharge standard after the deep oxidation treatment.
2. The surfaces of the inclined plate oil separation tank and the electrocoagulation air flotation tank are sequentially communicated with a dirty oil tank and a waste oil recoverer through pipelines, and a waste water outlet of the waste oil recoverer is communicated with the regulating tank through a pipeline. Oil is condensed on the surface layer of an electrocoagulation air floatation tank by electrocoagulation and electroflotation, then enters a dirty oil tank for standing, enters a waste oil recoverer, and is dissolved into soluble aluminum salt, so that flocculated oil is released, and animal and vegetable oil is obtained by heating and recovering.
Drawings
FIG. 1 is a schematic view of the system of the present invention;
wherein: the device comprises a regulating tank 1, an inclined plate oil separation tank 2, an electrocoagulation-flotation tank 3, an anoxic tank 4, an aerobic tank 5, a membrane separation tank 6, two sedimentation tanks 7, a pH regulating tank 8, a reaction tank 9, a neutralization tank 10, a stripping tank 11, a flocculation tank 12, a plate-and-frame filter 13, a drainage tank 14, a ferrous ion storage tank 15, a hydrogen peroxide storage tank 16, a dirty oil tank 17, a waste oil recoverer 18, a power supply 19, a stirrer 20, a sodium hydroxide storage tank 21, a flocculating agent storage tank 22 and a filter press 23.
Detailed Description
The invention is further described with reference to the following examples, but the scope of the invention as claimed is not limited to the scope of the examples.
Example 1
Like figure 1, a processing system of kitchen waste water, including equalizing basin 1, equalizing basin 1 communicates in proper order with swash plate oil interceptor 2, electrocoagulation air supporting pond 3 and oxygen deficiency pond 4 through the pipeline, oxygen deficiency pond 4 adopts the baffle separation in proper order with good oxygen pond 5 and membrane separation pond 6, and membrane separation pond 6 communicates in proper order with two sedimentation tanks 7, pH equalizing basin 8, Fenton oxidation system through the pipeline, Fenton oxidation system is equipped with reaction tank 9 in proper order, neutralization tank 10 in proper order, blows off pond 11 and flocculation basin 12, and flocculation basin 12 communicates in proper order with plate and frame filter 13 and drainage tank 14 through the pipeline.
Preferably, the reaction tank 9 is respectively communicated with the ferrous ion storage tank 15 and the hydrogen peroxide storage tank 16 through pipelines.
Preferably, the surfaces of the inclined plate oil separation tank 2 and the electrocoagulation-flotation tank 3 are sequentially communicated with a dirty oil tank 17 and a waste oil recoverer 18 through pipelines, and a waste water outlet of the waste oil recoverer 18 is communicated with the regulating tank 1 through a pipeline.
Further preferably, the dirty oil tank 17 is communicated with the adjusting tank 1 through a pipeline.
Further preferably, the waste oil recoverer 18 is communicated with the filter press 23 through a pipeline, and an interlayer is arranged on the surface layer of the waste oil recoverer 18 and can be used for circulating a heat exchange medium.
Further preferably, the electrocoagulation air flotation tank 3 is electrically connected with a power supply 19.
Preferably, the electrocoagulation air flotation tank 3 is internally provided with 15 cathode plates and 7 anode plates which are alternately arranged at equal intervals, wherein the number of the cathode plates is 8 and the number of the anode plates is 7.
Preferably, a stirrer 20 is arranged at the middle rear part in the reaction tank 9.
Preferably, the neutralization tank 10 is communicated with a sodium hydroxide storage tank 21 through a pipeline, and the flocculation tank 12 is communicated with a flocculant storage tank 22 through a pipeline.
The utility model discloses during the use: the kitchen waste water is statically placed in the adjusting tank 1, the waste water after the upper layer of oil residue is skimmed by the inclined plate oil separation tank 2 enters the electrocoagulation air floatation tank 3, and the effect of generating aluminum ions by utilizing an electrochemical reaction is utilized. When the anode aluminum ions are dissolved out, the anode aluminum ions can be used as an aluminum salt flocculating agent to remove pollutants in the wastewater, namely the electrocoagulation effect. And a plurality of micro bubbles brought by the cathode form an air floatation reaction area, namely the electric floatation effect. The power supply 19 is a voltage-stabilizing temperature-current direct-current power supply, the voltage range is 0-12V, the plate-to-plate distance between a cathode plate and an anode plate of the electrocoagulation floatation tank 3 is 4cm, the pH value of the wastewater is adjusted to 5-6, and when the current is 30A and the hydraulic retention time is 20-30min, the energy consumption of each cubic meter of wastewater is about 0.5kW.h/m3。
Condensing grease on the surface layer of an electrocoagulation air floatation tank 3 by utilizing electrocoagulation and electroflotation, then entering a dirty oil tank 17 for standing, entering a waste oil recoverer 18, adjusting the pH of aluminum floc to be less than 2, dissolving the floc into soluble aluminum salt, thereby releasing flocculated grease, then heating at 70-80 ℃ for 1.5-2.5h, floating the grease on the upper layer of the liquid surface, removing the lower aqueous solution to obtain a fried water-containing mixture, heating to 100 ℃ and 110 ℃, removing water, leaving a mixture of oil and solid residue, heating to 70-80 ℃, and carrying out suction filtration to obtain the animal and vegetable oil.
Wastewater at the bottom of the electrocoagulation-floatation tank 3 enters an anoxic tank 4 to be separated from an aerobic tank 5 and a membrane separation tank 6 by adopting partition plates in sequence. The volume ratio of the anoxic tank 4 to the aerobic tank 5 is 1: 3. The membrane separation tank 6 adopts a PVDF curtain type hollow fiber membrane, and the average pore diameter of the membrane is 0.2 mu m. The anoxic tank is stirred by a stirrer, and the aerobic tank is provided with an aeration pumpAnd (4) aerating, namely mounting a perforated aeration pipe in the membrane separation tank 6, and aerating by adopting an air blower. The wastewater separated by the membrane separation tank 6 enters a secondary sedimentation tank 7 for sedimentation and separation, then enters a Fenton oxidation system for deep oxidation treatment after the pH is adjusted by a pH adjusting tank 8, and H2O2The dosage is 90-110mg/L, Fe2+The adding amount is 350mg/L, the initial pH value is 4-5.5, the reaction time is 55-60 min, and the treated water and the water quality can reach the first-level standard of the GB 8978-1996 integrated wastewater discharge standard.
The above-mentioned embodiments only represent the preferred embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, various changes, modifications and substitutions can be made without departing from the spirit of the invention, and these are all within the scope of the invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (9)
1. The utility model provides a processing system of meal kitchen waste water, includes equalizing basin (1), its characterized in that: equalizing basin (1) communicates through pipeline and swash plate oil interceptor (2), electrocoagulation air supporting pond (3) and oxygen deficiency pond (4) in proper order, oxygen deficiency pond (4) adopt the baffle separation in proper order with good oxygen pond (5) and membrane separation pond (6), and membrane separation pond (6) communicate through pipeline and two sedimentation tank (7), pH equalizing basin (8), Fenton oxidation system in proper order, Fenton oxidation system is equipped with reaction tank (9), neutralization groove (10) in proper order, blows off pond (11) and flocculation basin (12), and flocculation basin (12) communicate through pipeline and plate and frame filter (13) and drainage tank (14) in proper order.
2. The kitchen wastewater treatment system according to claim 1, characterized in that: the reaction tank (9) is respectively communicated with a ferrous ion storage tank (15) and a hydrogen peroxide storage tank (16) through pipelines.
3. The kitchen wastewater treatment system according to claim 1, characterized in that: the surfaces of the inclined plate oil separation tank (2) and the electrocoagulation air flotation tank (3) are sequentially communicated with a dirty oil tank (17) and a waste oil recoverer (18) through pipelines, and a waste water outlet of the waste oil recoverer (18) is communicated with the adjusting tank (1) through a pipeline.
4. The kitchen wastewater treatment system according to claim 3, characterized in that: the dirty oil tank (17) is communicated with the adjusting tank (1) through a pipeline.
5. The kitchen wastewater treatment system according to claim 4, characterized in that: the electrocoagulation air flotation tank (3) is electrically connected with a power supply (19).
6. The kitchen wastewater treatment system according to claim 4, characterized in that: the electrocoagulation air floatation tank (3) is internally provided with 15 negative plates and 7 positive plates which are alternately arranged at equal intervals.
7. The kitchen wastewater treatment system according to claim 4, characterized in that: the waste oil recoverer (18) is communicated with the filter press (23) through a pipeline.
8. The kitchen wastewater treatment system according to claim 1, characterized in that: a stirrer (20) is arranged at the middle rear part in the reaction tank (9).
9. The kitchen wastewater treatment system according to claim 1, characterized in that: the neutralization tank (10) is communicated with a sodium hydroxide storage tank (21) through a pipeline, and the flocculation tank (12) is communicated with a flocculant storage tank (22) through a pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022169703.0U CN213327241U (en) | 2020-09-28 | 2020-09-28 | Kitchen wastewater treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022169703.0U CN213327241U (en) | 2020-09-28 | 2020-09-28 | Kitchen wastewater treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213327241U true CN213327241U (en) | 2021-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022169703.0U Active CN213327241U (en) | 2020-09-28 | 2020-09-28 | Kitchen wastewater treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213327241U (en) |
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2020
- 2020-09-28 CN CN202022169703.0U patent/CN213327241U/en active Active
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