CN114772843A - Method and device for increasing pH of preserved fruit processing wastewater - Google Patents
Method and device for increasing pH of preserved fruit processing wastewater Download PDFInfo
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- CN114772843A CN114772843A CN202210315092.7A CN202210315092A CN114772843A CN 114772843 A CN114772843 A CN 114772843A CN 202210315092 A CN202210315092 A CN 202210315092A CN 114772843 A CN114772843 A CN 114772843A
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- 235000013399 edible fruits Nutrition 0.000 title claims abstract description 71
- 239000002351 wastewater Substances 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000002253 acid Substances 0.000 claims abstract description 109
- 230000015556 catabolic process Effects 0.000 claims abstract description 67
- 238000006731 degradation reaction Methods 0.000 claims abstract description 67
- 230000000813 microbial effect Effects 0.000 claims abstract description 64
- 239000000945 filler Substances 0.000 claims abstract description 57
- 238000004062 sedimentation Methods 0.000 claims abstract description 39
- 239000010802 sludge Substances 0.000 claims abstract description 33
- 230000002378 acidificating effect Effects 0.000 claims abstract description 18
- 239000005416 organic matter Substances 0.000 claims abstract description 7
- 244000005700 microbiome Species 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 229910000514 dolomite Inorganic materials 0.000 claims description 11
- 239000010459 dolomite Substances 0.000 claims description 11
- 238000009792 diffusion process Methods 0.000 claims description 7
- 235000015110 jellies Nutrition 0.000 claims 6
- 239000008274 jelly Substances 0.000 claims 6
- 239000013043 chemical agent Substances 0.000 abstract description 8
- 238000001914 filtration Methods 0.000 abstract description 7
- 239000003513 alkali Substances 0.000 abstract description 6
- 239000002244 precipitate Substances 0.000 abstract description 5
- 238000004065 wastewater treatment Methods 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 description 9
- 238000005406 washing Methods 0.000 description 5
- 230000007935 neutral effect Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000005273 aeration Methods 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 239000001963 growth medium Substances 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- 241000193755 Bacillus cereus Species 0.000 description 2
- 238000010170 biological method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011081 inoculation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 241001645732 Bacillus albus Species 0.000 description 1
- 241000835167 Bacillus safensis Species 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 244000175448 Citrus madurensis Species 0.000 description 1
- UDIPTWFVPPPURJ-UHFFFAOYSA-M Cyclamate Chemical compound [Na+].[O-]S(=O)(=O)NC1CCCCC1 UDIPTWFVPPPURJ-UHFFFAOYSA-M 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 238000011001 backwashing Methods 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229960004106 citric acid Drugs 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
- 239000000625 cyclamic acid and its Na and Ca salt Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002068 microbial inoculum Substances 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 229960001462 sodium cyclamate Drugs 0.000 description 1
- HRZFUMHJMZEROT-UHFFFAOYSA-L sodium disulfite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])(=O)=O HRZFUMHJMZEROT-UHFFFAOYSA-L 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 229940001584 sodium metabisulfite Drugs 0.000 description 1
- 235000010262 sodium metabisulphite Nutrition 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention relates to the field of preserved fruit processing wastewater treatment, in particular to a method and a device for increasing the pH of preserved fruit processing wastewater; inputting the acidic preserved fruit wastewater into an acid-resistant microbial degradation pool, and realizing pH increase and organic matter removal of the acidic preserved fruit wastewater by using acid-resistant microbial degradation; treating the effluent of the acid-resistant microbial degradation tank in a sedimentation tank, obtaining biological sludge formed by acid-resistant microbes, and conveying part of the biological sludge back to the acid-resistant microbial degradation tank; treating the effluent of the sedimentation tank by an alkaline filler filter tank; the pH value of the acidic preserved fruit wastewater is improved by the combined action of acid-resistant microbial degradation and alkaline filler filtration, a large amount of precipitates generated by adding a chemical agent and adding alkali into the preserved fruit wastewater are avoided, the operation cost is obviously reduced, and meanwhile, a part of organic matters are removed by microbial degradation, the organic load of a subsequent treatment unit is reduced, and the treatment cost is favorably reduced.
Description
Technical Field
The invention relates to the technical field of preserved fruit processing wastewater treatment, in particular to a method and a device for increasing the pH of preserved fruit processing wastewater.
Background
The waste water produced by processing the preserved fruits often has pungent smell, contains a large amount of sugar, salt, sodium cyclamate, citric acid, sodium metabisulfite and the like, has strong acidity, can cause serious pollution when being discharged into a water body, and needs to be discharged after the pH value is increased.
The preserved fruit processing wastewater is generally treated by a biological method, and in order to maintain the proper pH condition of the common biological method, a large amount of alkali liquor is used for neutralizing strong-acid preserved fruit processing wastewater, such as flake caustic soda, lime and the like.
The method adds alkaline chemical agents to increase the pH value of the preserved fruit wastewater to neutral and alkaline, a large amount of precipitates are generated, the sludge treatment load and cost are increased, and the treatment cost is increased.
Disclosure of Invention
The invention aims to provide a method and a device for increasing the pH of cold fruit processing wastewater, and aims to solve the technical problems that in the prior art, the pH of cold fruit processing wastewater is increased to be neutral and alkaline by adding an alkaline chemical agent, a large amount of precipitates are generated, the sludge treatment load and cost are increased, and the treatment cost is increased.
In order to achieve the purpose, the method for increasing the pH of the preserved fruit processing wastewater adopted by the invention comprises the following steps:
obtaining acid preserved fruit wastewater, inputting the acid preserved fruit wastewater into an acid-resistant microbial degradation pool, and realizing pH increase and organic matter removal of the acid preserved fruit wastewater by using acid-resistant microbial degradation;
treating the effluent of the acid-resistant microbial degradation tank by a sedimentation tank, acquiring biological sludge formed by acid-resistant microbes, and conveying part of the biological sludge back to the acid-resistant microbial degradation tank;
and treating the effluent of the sedimentation tank by using an alkaline filler filter tank to obtain water with the pH value being increased.
The method comprises the following steps of obtaining acid preserved fruit wastewater, inputting the acid preserved fruit wastewater into an acid-resistant microbial degradation pool, and realizing pH (potential of hydrogen) improvement and organic matter removal of the acid preserved fruit wastewater by using acid-resistant microbial degradation, wherein the method further comprises the following steps:
the acid-tolerant microorganisms are present in the form of a biofilm.
The method comprises the following steps of obtaining acid preserved fruit wastewater, inputting the acid preserved fruit wastewater into an acid-resistant microbial degradation pool, and realizing pH increase and organic matter removal of the acid preserved fruit wastewater by using acid-resistant microbial degradation, wherein the method further comprises the following steps:
the acid-resistant microbial degradation tank adopts a three-dimensional elastic filler as a biofilm carrier.
Wherein the sedimentation tank treats the effluent of the acid-resistant microbial degradation tank, obtains a biological sludge formed by acid-resistant microbes, and conveys a portion of the biological sludge back to the acid-resistant microbial degradation tank, the method further comprising:
and treating the effluent of the acid-resistant microbial degradation tank by the sedimentation tank, settling for 2-4 hours to obtain biological sludge formed by acid-resistant microbes, arranging a sludge return pipe at the bottom of the sedimentation tank, wherein the sludge return ratio is 50-100%, and conveying part of the biological sludge back to the acid-resistant microbial degradation tank.
Wherein, the effluent of the sedimentation tank is treated by an alkaline filler filter tank to obtain water with raised pH, and the method also comprises the following steps:
the alkaline filler in the alkaline filler filter is dolomite, the particle size of the dolomite is 1-3 cm, and the thickness of a filter bed is 1-1.5 m.
A device for increasing pH of cold fruit processing wastewater comprises an acid-resistant microbial degradation tank, a sedimentation tank, an alkaline filler filter tank and an air diffusion assembly;
the sedimentation tank is communicated with the acid-resistant microbial degradation tank, the alkaline filler filter tank is communicated with the sedimentation tank, and the air diffusion assembly is connected with the alkaline filler filter tank.
The method and the device for improving the pH value of the cold fruit processing wastewater firstly realize the pH improvement and the organic matter removal of the acidic cold fruit wastewater through the acid-resistant microbial degradation in the acid-resistant microbial degradation tank, wherein acid-resistant microbes exist in a biomembrane form, then the sedimentation tank intercepts biological sludge in the effluent of the acid-resistant microbial degradation tank, the intercepted biological sludge partially returns to the acid-resistant microbial degradation tank, the alkaline filler filter tank treats the effluent of the sedimentation tank, the alkaline filler tank is provided with alkaline filler dolomite, the pH value of the acidic cold fruit wastewater is further improved to be nearly neutral, the pH value of the acidic cold fruit wastewater is improved by the combined action of the acid-resistant microbial degradation and the alkaline filler filtration, compared with the traditional method for adding alkaline chemical agents, the method and the device avoid adding chemical agents and a large amount of sediments generated by adding alkali into the cold fruit wastewater, thereby obviously reducing the operating cost, meanwhile, a part of organic matters are removed through microbial degradation, so that the organic load of a subsequent treatment unit is reduced, and the treatment cost is favorably reduced.
Drawings
FIG. 1 is a process diagram of the method for raising pH of waste water from fruit processing according to the present invention.
FIG. 2 is a schematic structural diagram of the device for raising pH of waste water from fruit processing of the present invention.
Fig. 3 is an enlarged view of fig. 2 at a of the present invention.
201-acid-resistant microbial degradation pool, 202-sedimentation pool, 203-alkaline filler filter pool, 204-guide rail, 205-guide block, 206-exhaust pipe, 207-support seat, 208-transmission screw rod and 209-slide block.
Detailed Description
Referring to fig. 1, the present invention provides a method for increasing pH of waste water from processing preserved fruits, comprising the following steps:
s101: obtaining the acidic preserved fruit wastewater, inputting the acidic preserved fruit wastewater into an acid-resistant microbial degradation tank 201, and realizing the pH increase and organic matter removal of the acidic preserved fruit wastewater by using the acid-resistant microbial degradation.
Specifically, firstly, inputting the obtained acidic preserved fruit wastewater into the acid-resistant microbial degradation pool 201, wherein the acid-resistant microbial degradation pool 201 contains acid-resistant microorganisms, and the acid-resistant microorganisms consist of Bacillus cereus and Bacillus albus; bacillus cereus has been deposited at the Guangdong provincial collection of microorganisms at 23.8.2021, address: guangzhou city, first furious Zhonglu No. 100 large yard No. 59 building No. 5, zip code: 510070, collection accession number GDMCC NO: 61884; bacillus safensis has been deposited at the Guangdong provincial collection of microorganisms at 23.8.2021, address: building 5 of the prefecture Zhonglu No. 100 large yard No. 59 in Guangzhou city, the postcode: 510070, accession number GDMCC NO: 61886, acid-resistant microorganisms exist in the form of a biological film, the acid-resistant microorganism degradation tank 201 adopts a three-dimensional elastic filler as a biological film carrier, the acid-resistant microorganisms are attached to the filler to form a biological film, the acidic preserved fruit wastewater is treated under aerobic conditions, the pH value of the acidic preserved fruit wastewater is increased, organic matters are removed, the pH value is not required to be adjusted by adding alkali, chemical agents are prevented from being added, a large amount of precipitates generated by adding alkali into the preserved fruit wastewater are avoided, the operation cost is obviously reduced, and the treated water is discharged into the precipitation tank 202.
S102: the sedimentation tank 202 processes the effluent of the acid-resistant microbial degradation tank 201, obtains biological sludge formed by acid-resistant microbes, and conveys a portion of the biological sludge back to the acid-resistant microbial degradation tank 201.
Specifically, the sedimentation tank 202 intercepts biological sludge formed by acid-resistant microorganisms in the water discharged from the acid-resistant microbial degradation tank 201, the sedimentation time is 2-4 h, a sludge return pipe is arranged at the bottom of the sedimentation tank 202, the sludge return ratio is 50% -100%, the intercepted biological sludge is partially returned to the acid-resistant microbial degradation tank 201 and reused, the treatment cost is favorably reduced, and the treated water is discharged into the alkaline filler tank.
S103: the alkaline filler filter 203 treats the effluent of the sedimentation tank 202 to obtain water with raised pH.
Specifically, the alkaline filler filter 203 is internally provided with an alkaline filler dolomite, wherein the grain diameter of the dolomite is 1-3 cm, and the bottom of the alkaline filler filter 203 is provided with an air diffusion device for blowing off soluble CO2The regular back flushing of the alkaline filler filter 203 is completed by a gas washing device arranged at the bottom of the alkaline filler filter 203, the alkaline filler filter 203 further plays a role in lifting the pH value of the acidic preserved fruit wastewater to be near neutral, and the pH value of the acidic preserved fruit wastewater is lifted by adopting the combined action of acid-resistant microbial degradation and alkaline filler filtration.
The specific implementation mode is as follows:
1) the acid-resistant microbial degradation tank 201 directly treats strong acid preserved fruit processing wastewater, the COD concentration of the preserved fruit wastewater is 5000-15000 mg/L, the pH is 3.5-4.5, and the hydraulic retention time is 24-48 h; the sedimentation performance of acid-resistant microorganisms is poor, the acid-resistant microorganisms need to operate in a biomembrane mode, the volume filling ratio of a reaction tank adopting elastic three-dimensional fillers is 60-80%, and the membrane hanging time is about 7-14 days;
2) treating effluent of the acid-resistant microbial degradation tank 201 by using a sedimentation tank 202, wherein the sedimentation time is 2-4 h, a sludge return pipe is arranged at the bottom of the sedimentation tank 202, and the sludge return ratio is 50-100%;
3) the alkaline filler filter 203 is used for treating effluent of the sedimentation tank 202, the particle size of dolomite is 1-2 cm, the thickness of a filter bed is 1-1.5 m, the filtering speed is 1-3 m/h, the perforated pipe is used for aeration, the air-water ratio is 10-20, the perforated pipe is arranged at the bottom of the filter, the aperture is 9-12 mm, the washing period of the filter is 15d, and the washing strength of air washing is 10-15L/(m 2 s).
Specific examples are given below:
example 1: culturing acid-resistant microorganisms and starting acid-resistant microorganism degradation tank 201
The acid-resistant microorganisms are subjected to sterilization culture by adopting the following culture medium: 3g/L malt extract; 5g/L ammonium chloride; 10g/L glucose; 3g/L of oxalic acid, wherein the inoculation amount is 10 percent, and the OD600 value of the bacterial liquid after 3 days is more than or equal to 1.5;
starting the acid-resistant microbial degradation tank 201: adding elastic three-dimensional filler, wherein the volume filling ratio of the filler is 70%, the inoculation amount of the acid-resistant microbial inoculum is 20%, adding the culture medium, performing aeration culture for 7 days, completing filler film formation and reactor starting, and increasing the pH of the culture medium from initial 2.5 to above 7.5.
Example 2: PH elevation for mixed preserved fruit processing wastewater treatment
The indexes of the mixed sewage produced by processing preserved fruits are as follows: pH 4.6, COD 13500mg/L, TN 110mg/L, TP 3mg/L, TN 15mg/L, and salinity 5%, and the preserved fruit wastewater is mixed sewage of plum and cumquat preserved fruit. The acid-resistant microorganism degradation adopts a biomembrane formed by cultured acid-resistant microorganisms attached with a filler to directly treat the acid preserved fruit processing wastewater, and the acid-resistant microorganisms have good acid and salt resistance; the alkaline filler filter 203 adopts dolomite particles with the particle size of 1-3 cm, the height of a filter material is 1.5m, the filtering speed is 1m/h, and aeration is performed at the bottom; carrying out aerobic treatment on the acid-resistant microorganisms for 24 hours, wherein the pH is 7.5, and the COD is reduced to 7480 mg/L; after filtering with the alkaline filter material filter, the COD is reduced to 7160mg/L, and the pH value is 7.7. When the preserved fruit processing wastewater passes through the acid-resistant microbial degradation and is directly treated by the alkaline filler filter 203, the pH value is increased from 4.6 to 6.5. The dolomite filter is back-washed once every 15 days, the back-washing strength is 15L/(m2 s), and the washing time is 15 min.
The pH value of the preserved fruit processing wastewater is improved by adopting the combined action of acid-resistant microbial degradation and alkaline filler filtration, compared with the traditional method for adding alkaline chemical agents, the method avoids adding chemical agents and a large amount of precipitates generated by adding alkali into the preserved fruit wastewater, obviously reduces the operation cost, removes a part of organic matters through microbial degradation, reduces the organic load of a subsequent treatment unit, and is favorable for reducing the treatment cost.
Referring to fig. 2, a device for increasing pH of waste water from processing preserved fruits comprises an acid-resistant microbial degradation tank 201, a sedimentation tank 202, an alkaline filler filter tank 203, and an air diffusion component;
the sedimentation tank 202 is communicated with the acid-resistant microbial degradation tank 201, the alkaline filler filter tank 203 is communicated with the sedimentation tank 202, and the air diffusion assembly is connected with the alkaline filler filter tank 203.
Further, referring to fig. 2 and 3, the air diffusing assembly includes a support member, a guide rail 204, a guide block 205 and an exhaust pipe 206, wherein the support member is connected to the alkaline filler filter 203; the guide rail 204 is connected with the alkaline filler filter 203 and is positioned inside the alkaline filler filter 203; the guide block 205 is slidably connected with the guide rail 204 and connected with the exhaust pipe 206; the exhaust pipe 206 is connected to the support member.
Further, referring to fig. 2 and fig. 3, the supporting member includes a supporting seat 207, a transmission screw 208 and a sliding block 209, the supporting seat 207 is connected with the alkaline filler filter 203 and is located inside the alkaline filler filter 203; the transmission screw rod 208 is rotatably connected with the supporting seat 207; the sliding block 209 is rotatably connected to the driving screw 208 and is connected to the exhaust pipe 206.
In this embodiment, the acid-resistant microbial degradation tank 201 contains acid-resistant microbes, acid-resistant microbes are introduced into the acid-resistant microbial degradation tank 201, and the acid-resistant microbes degrade to achieve pH increase and removal of organic matters in the acid-resistant fruit wastewater, wherein the acid-resistant microbes exist in the form of a biofilm, the acid-resistant microbial degradation tank 201 adopts a three-dimensional elastic filler as a biofilm carrier, the treated water is introduced into the sedimentation tank 202, the sedimentation tank 202 settles for 2-4 h to obtain biological sludge formed by the acid-resistant microbes, a sludge return pipe is arranged at the bottom of the sedimentation tank 202, part of the biological sludge is conveyed back into the acid-resistant microbial degradation tank 201 for recycling, which is beneficial to saving treatment cost, the settled sewage is introduced into the alkaline filler filter tank 203, the alkaline filler filter 203 contains dolomite, and the acid-resistant fruit wastewater is further treated, raising the pH value of the water to obtain water with raised pH value; the alkaline filler filter 203 is also internally provided with the supporting seat 207, the supporting seat 207 is rotationally connected with the transmission screw rod 208, the transmission screw rod 208 is driven to rotate by a driving motor arranged above the supporting seat 207, the transmission screw rod 208 is rotationally connected with the slide block 209, the slide block 209 and the transmission screw rod 208 are arranged in a thread fit way relatively, the slide block 209 moves up and down along with the positive rotation and the reverse rotation of the transmission screw rod 208, the slide block 209 is connected with the exhaust pipe 206, the exhaust pipe 206 is connected with the guide block 205, the guide block 205 is connected with the guide rail 204 in a sliding way, the guide rail 204 is arranged in the alkaline filler filter 203 to guide the movement of the exhaust pipe 206, an air source outside the exhaust pipe 206 inflates the alkaline filler filter 203, the wastewater treatment is assisted, and the transmission of the slide block 209 by the transmission screw rod 208 is utilized, conveniently adjust the height of blast pipe 206, and then be applicable to the waste water treatment of multiple condition, conveniently shift out simultaneously blast pipe 206 washs, reduces the hand labor volume, effectively improves work efficiency.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (6)
1. A method for increasing pH of preserved fruit processing wastewater is characterized by comprising the following steps:
obtaining acid preserved fruit wastewater, inputting the acid preserved fruit wastewater into an acid-resistant microbial degradation pool, and realizing pH increase and organic matter removal of the acid preserved fruit wastewater by using acid-resistant microbial degradation;
treating the effluent of the acid-resistant microbial degradation tank by using a sedimentation tank to obtain biological sludge formed by acid-resistant microbes, and conveying part of the biological sludge back to the acid-resistant microbial degradation tank;
and treating the effluent of the sedimentation tank by using an alkaline filler filter tank to obtain water with the pH value being increased.
2. The method for increasing the pH of the fruit jelly processing wastewater according to claim 1, wherein the acidic fruit jelly wastewater is obtained and is input into an acid-resistant microbial degradation tank, and the pH of the acidic fruit jelly wastewater is increased and organic matters are removed by using the acid-resistant microbial degradation, and the method further comprises the following steps:
the acid-tolerant microorganism is present in the form of a biofilm.
3. The method for increasing the pH of the fruit jelly processing wastewater according to claim 2, wherein the acidic fruit jelly wastewater is obtained and is input into an acid-resistant microbial degradation tank, and the pH of the acidic fruit jelly wastewater is increased and organic matters are removed by using the acid-resistant microbial degradation, and the method further comprises the following steps:
the acid-resistant microbial degradation tank adopts a three-dimensional elastic filler as a biofilm carrier.
4. The method for raising the pH of the waste water from the fruit processing according to claim 1, wherein the sedimentation tank is used for treating the effluent of the acid-resistant microbial degradation tank, obtaining the biological sludge formed by the acid-resistant microbes, and conveying part of the biological sludge back to the acid-resistant microbial degradation tank, and the method further comprises:
and treating the effluent of the acid-resistant microbial degradation tank by the sedimentation tank, settling for 2-4 hours to obtain biological sludge formed by acid-resistant microbes, arranging a sludge return pipe at the bottom of the sedimentation tank, wherein the sludge return ratio is 50-100%, and conveying part of the biological sludge back to the acid-resistant microbial degradation tank.
5. The method for increasing the pH of the waste water from the fruit processing according to claim 1, wherein the effluent of the sedimentation tank is treated by an alkaline filler filter to obtain the pH-increased water, and the method further comprises:
the alkaline filler in the alkaline filler filter tank is dolomite, the grain size of the dolomite is 1-3 cm, and the thickness of a filter bed is 1-1.5 m.
6. A device for increasing the pH of the cold fruit processing wastewater is suitable for the method for increasing the pH of the cold fruit processing wastewater according to claim 1, and is characterized by comprising an acid-resistant microbial degradation tank, a sedimentation tank, an alkaline filler filter tank and an air diffusion assembly;
the sedimentation tank is communicated with the acid-resistant microbial degradation tank, the alkaline filler filter tank is communicated with the sedimentation tank, and the air diffusion assembly is connected with the alkaline filler filter tank.
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