CN114716106B - Ginseng filtrate wastewater treatment method and implementation system - Google Patents
Ginseng filtrate wastewater treatment method and implementation system Download PDFInfo
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- CN114716106B CN114716106B CN202210389101.7A CN202210389101A CN114716106B CN 114716106 B CN114716106 B CN 114716106B CN 202210389101 A CN202210389101 A CN 202210389101A CN 114716106 B CN114716106 B CN 114716106B
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- 239000000706 filtrate Substances 0.000 title claims abstract description 54
- 241000208340 Araliaceae Species 0.000 title claims abstract description 22
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 title claims abstract description 21
- 235000003140 Panax quinquefolius Nutrition 0.000 title claims abstract description 21
- 235000008434 ginseng Nutrition 0.000 title claims abstract description 21
- 238000004065 wastewater treatment Methods 0.000 title abstract description 5
- 238000001179 sorption measurement Methods 0.000 claims abstract description 50
- 238000001914 filtration Methods 0.000 claims abstract description 45
- 238000000034 method Methods 0.000 claims abstract description 25
- 239000002351 wastewater Substances 0.000 claims abstract description 24
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 238000003756 stirring Methods 0.000 claims abstract description 13
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 11
- QMQXDJATSGGYDR-UHFFFAOYSA-N methylidyneiron Chemical compound [C].[Fe] QMQXDJATSGGYDR-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000005189 flocculation Methods 0.000 claims abstract description 7
- 230000016615 flocculation Effects 0.000 claims abstract description 7
- 230000003647 oxidation Effects 0.000 claims abstract description 7
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 7
- 238000001556 precipitation Methods 0.000 claims abstract description 7
- 239000003814 drug Substances 0.000 claims abstract description 6
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000003463 adsorbent Substances 0.000 claims abstract description 5
- 235000011121 sodium hydroxide Nutrition 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 230000001590 oxidative effect Effects 0.000 claims abstract description 4
- 230000002378 acidificating effect Effects 0.000 claims abstract description 3
- 239000002245 particle Substances 0.000 claims description 47
- 238000010828 elution Methods 0.000 claims description 22
- 238000011084 recovery Methods 0.000 claims description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 11
- 230000007704 transition Effects 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 5
- 239000000701 coagulant Substances 0.000 claims description 4
- 230000035484 reaction time Effects 0.000 claims description 3
- 230000000717 retained effect Effects 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 239000003153 chemical reaction reagent Substances 0.000 claims description 2
- 239000002699 waste material Substances 0.000 claims description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims 2
- 239000007921 spray Substances 0.000 claims 2
- 238000007599 discharging Methods 0.000 abstract description 14
- 239000012028 Fenton's reagent Substances 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 abstract description 3
- 150000003254 radicals Chemical class 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 229920002401 polyacrylamide Polymers 0.000 abstract 2
- 239000000463 material Substances 0.000 description 12
- 239000000243 solution Substances 0.000 description 10
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 235000020710 ginseng extract Nutrition 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003480 eluent Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 235000013373 food additive Nutrition 0.000 description 1
- 239000002778 food additive Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 description 1
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229930182490 saponin Natural products 0.000 description 1
- 150000007949 saponins Chemical class 0.000 description 1
- 235000017709 saponins Nutrition 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/343—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the pharmaceutical industry, e.g. containing antibiotics
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/026—Fenton's reagent
-
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Abstract
The invention discloses a ginseng filtrate wastewater treatment method and an implementation system, comprising the following steps: iron-carbon microelectrolysis: adjusting the pH value of the ginseng filtrate wastewater to be acidic, and carrying out iron-carbon micro-electrolysis reaction to obtain a treatment solution I; fenton oxidation: adding 1~3% hydrogen peroxide with the mass fraction of 30% into the treatment liquid I, and oxidizing for 1h at the water temperature of 20-30 ℃ to obtain a treatment liquid II; flocculation and precipitation: adding caustic soda flakes into the treatment liquid II to adjust the pH value to 8~9; adding PAM (polyacrylamide) with the mass fraction of 0.01 percent, quickly stirring for 0.1 to 0.5min, uniformly mixing, and filtering to obtain filtrate III; and (3) adsorption and decoloration: adding an adsorbent into the filtrate III, and filtering to obtain a filtrate IV; biochemical treatment: and (4) discharging the filtrate IV after the filtrate IV enters a biochemical pool to stay. The invention utilizes the micro-electrolysis-Fenton reagent combination to treat the traditional Chinese medicine preparation wastewater, adopts chemical battery reduction and free radical oxidation to degrade macromolecular organic matters together, and provides a stable operation method for further biochemical treatment by reducing COD and chroma of the wastewater.
Description
Technical Field
The invention relates to the technical field of flanges, in particular to a ginseng filtrate wastewater treatment method and an implementation system.
Background
The ginseng extract is extracted and refined from roots, stems and leaves of ginseng of Araliaceae, is rich in eighteen ginseng monomer saponins, is dissolved in water at 80 ℃, is easy to dissolve in ethanol, is widely applied to the medicine and health care industry, the beauty and cosmetics industry and food additives, the output of the ginseng extract in China reaches 634 tons at present, china is a ginseng producing country, and the output accounts for about 70 percent of the total output of the world.
The waste water treatment method produced by the traditional Chinese medicine preparation is that waste water produced in each process is mixed, pretreated, flocculated and precipitated and then enters a biochemical pool for treatment and discharge, and the COD of the waste water entering the biochemical pool is too high, the biochemical load is too large, and the biochemical failure is caused for a long time.
Disclosure of Invention
The invention aims to provide a method for treating ginseng filtrate wastewater, which aims to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: a method for treating ginseng filtrate wastewater comprises the following steps:
iron-carbon microelectrolysis: adjusting the pH value of the ginseng filtrate wastewater to be acidic, and carrying out iron-carbon micro-electrolysis reaction to obtain a treatment solution I;
fenton oxidation: adding 1-3% of 30% hydrogen peroxide into the treatment fluid I, and oxidizing for 1h at the water temperature of 20-30 ℃ to obtain a treatment fluid II;
flocculation and precipitation: adding caustic soda flakes into the treatment liquid II to adjust the pH value to 8-9; adding PAM 0.01% (mass fraction), rapidly stirring for 0.1-0.5min, mixing, and filtering to obtain filtrate III;
and (3) adsorption decoloration: adding an adsorbent into the filtrate III, and filtering to obtain a filtrate IV;
biochemical treatment: and (4) discharging the filtrate IV after the filtrate IV enters a biochemical pool to stay.
Preferably, dilute waste acid is used for adjusting the pH value of the wastewater to be between 3.0 and 5.0 in the iron-carbon micro-electrolysis reaction; the reagents added in the iron-carbon reaction comprise 60-80 meshes of iron powder and carbon powder, the adding amount of the iron powder is 1.5-2.5% of the mass of the wastewater, the volume ratio of the iron powder to the carbon powder is 1:1-1.5, and the reaction time is 3.0-4.0h, so that the treatment fluid I is obtained.
Preferably, in the step of flocculation and precipitation, after the medicament is put into, the rapid stirring speed is 120-180r/min; then slowly stirring for 10-20 min, and then settling, wherein the slow stirring speed is 15-40r/min.
Preferably, in the flocculation precipitation step, a coagulant is added at intervals of PAM, and the coagulant is one of polymeric ferric sulfate, polymeric ferric chloride, polymeric aluminum sulfate and polymeric aluminum chloride.
Preferably, the device comprises a filter tower, wherein the filter tower is used for adsorbing the filtrate III;
a filter bin is arranged in the filter tower, the filter bin is filled with adsorption particles, a driving box is arranged at the bottom of the filter bin, and a driving mechanism in the driving box drives the filter bin to rotate around the center of the filter bin;
two input ports are arranged at the top of the filtering tower, filtrate III is obliquely sprayed out of the first input port, adsorption particles are obliquely sprayed out of the second input port, the spraying directions of the filtrate III and the adsorption particles are intersected, so that the filtrate III and the adsorption particles are mixed in the air and finally enter the filtering bin, the adsorption particles are retained and stored by the filtering bin, and the filtrate III is filtered out of the filtering bin.
Preferably, a main gear is installed in the driving box, a rack is arranged on the inner wall of the filter tower, the main gear is fixedly installed on the rack, the bottom of the bin wall of the filter bin is connected with an underframe, a planet gear is installed on the underframe, the planet gear is meshed with the main gear, is driven by a motor and rotates around the main gear, and therefore the filter bin is driven to rotate around the center of the main gear;
a transition wheel is arranged on one side of the planet wheel, the transition wheel is rotatably connected to the bottom frame and meshed with the planet wheel, the transition wheel is hinged with a connecting rod, and the end part of the connecting rod is hinged with a discharge plate;
the bottom of the filter bin is provided with a discharge bin which is of a fixed structure and does not rotate along with the filter bin, the discharge bin is communicated with the filter bin through an upper opening, and the two side openings of the discharge bin drop on adsorption particles in the discharge bin, are pushed out of the discharge bin by a discharge plate and enter a recovery bin arranged on the wall of the filter tower.
Preferably, the discharge bin is positioned in the filter bin and is rotationally connected with the filter bin, the bottom of the discharge bin is provided with a discharge groove, the discharge plate is slidably connected in the discharge groove, and the adsorption particles at the bottommost part are gathered in the discharge groove and are discharged out of the tower along with the sliding of the discharge plate;
the bottom side wall of the filter bin is provided with a notch, the side wall of the filter tower is symmetrically provided with two through grooves, and the two through grooves are communicated with the recovery bin.
Preferably, an elution bin is arranged at the top of the filter tower, eluent is contained in the elution bin, a channel is connected between the recovery bin and the elution bin, a lifting belt is arranged in the channel, the lifting belt lifts and transports the adsorption particles in the recovery bin to the direction of the elution bin, the elution bin discharges the eluent, and the adsorption particles on the lifting belt are subjected to countercurrent elution;
the eluted adsorption particles are discharged from the second input port into the column.
Compared with the prior art, the invention has the beneficial effects that:
the invention utilizes the micro-electrolysis-Fenton reagent combination to treat the traditional Chinese medicine preparation wastewater, adopts chemical battery reduction and free radical oxidation to degrade macromolecular organic matters together, adds hydrogen peroxide after the iron-carbon reaction according to the principle, and Fe generated by the anode reaction can be used as a catalyst for the subsequent catalytic oxidation treatment, namely Fe and hydrogen peroxide form a Fenton reagent oxidation system; the method for reducing COD and chroma of the wastewater provides a stable operation method for further biochemical treatment.
Drawings
FIG. 1 is a schematic view of the overall process of the present invention.
FIG. 2 is a schematic view of the structure of a filtration column of the present invention.
Fig. 3 is a schematic structural view of the filter bin of the present invention.
FIG. 4 is a schematic view of the installation structure of the filtering bin and the discharging bin of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b): referring to fig. 1, this example of a method for treating ginseng filtrate wastewater employs a ginseng extract production plant, in which the mixed solution of ginseng filtrate COD =9100mg/L, BOD =3861, and ph =5.9;
(1) Adjusting the pH value of the mixed liquor of the production wastewater of the ginseng extract to 3.0-5.0 by using dilute sulfuric acid, adding 60-80 meshes of iron powder and carbon powder, wherein the adding amount of the iron powder is 2.0 percent of the mass of the wastewater, the volume ratio of the iron powder to the carbon powder is 1:1, the reaction time is 4.0h, supplementing the dilute sulfuric acid in the reaction process to maintain the pH value at 3.0-5.0, and obtaining a treatment solution I after the reaction is finished;
(2) Slowly adding 3% of hydrogen peroxide with the mass fraction of 30% into the treatment fluid I after micro-electrolysis, and oxidizing for 1h at the water temperature of 20-30 ℃ to obtain a treatment fluid II;
(3) Adjusting pH of the treating solution II to 8-9 with sodium hydroxide, consuming 1.8% caustic soda solution, adding 0.003% PAM, and rapidly stirring for 10s at a rapid stirring rate of 120-180r/min; then slowly stirring for 10-20 min, settling, and filtering to obtain filtrate III, wherein the slow stirring speed is 15-40 r/min;
(4) Obtaining filtrate III, adding 0.05% of adsorption particles such as molecular sieve and activated carbon material, adsorbing for 20min at the rotation speed of 150r/min of a stirrer, and filtering to obtain filtrate IV;
(5) And discharging the filtrate IV after biochemical treatment or mixing with the municipal sewage for biochemical treatment.
The effluent water of the ginseng filtrate treated by the steps has COD =1180mg/L, BOD =880 mg/L, pH =8.1, COD removal rate is 87%, and stability is further improved for biochemistry;
in addition, in order to adapt to the treatment method, the existing filter tower is improved, and the method comprises the following specific steps:
comprises a filter tower, wherein the filter tower is used for adsorbing filtrate III;
referring to fig. 2, a filter bin 1 is installed in the filter tower, the filter bin 1 is filled with adsorption particles, a driving box is arranged at the bottom of the filter bin 1, and a driving mechanism in the driving box drives the filter bin 1 to rotate around the center of the driving box;
two input ports are arranged at the top of the filtering tower, filtrate III is obliquely sprayed out from the first input port 9, adsorption particles are obliquely sprayed out from the second input port 10, the spraying directions of the filtrate III and the adsorption particles are intersected, so that the filtrate III and the adsorption particles are mixed in the air and finally enter the filtering bin 1, the adsorption particles are retained and stored by the filtering bin 1, and the filtrate III is filtered out from the filtering bin 1.
In the prior art, a filtering layer is generally formed in the middle of a filtering tower, and filtered liquid is sprayed from the top to the bottom and is filtered by the filtering layer.
In the design of the embodiment, a system capable of replacing the adsorption particles on line is arranged, so that the rotation input of the adsorption particles is arranged at the input end of the filtrate III, and the adsorption particles are firstly contacted during the input. When the two materials are sprayed out, a speed difference is formed, so that the principle similar to countercurrent adsorption is caused; is beneficial to improving the adsorption efficiency.
After primary filtration, the filtrate enters a filtering bin 1 together, adsorption particles stay in the filtering bin 1, and filtrate III is filtered by the filtering bin 1 and then is output;
another bright point of the present embodiment is the online replacement function of the adsorption particles in the filter bin 1; the adsorption particles in the adsorption tower can be replaced without stopping the machine, so that the adsorption effect is prevented from being influenced after adsorption saturation;
the specific design is as follows: a main gear 2 is arranged in the driving box, a rack is arranged on the inner wall of the filtering tower, the main gear 2 is fixedly arranged on the rack, the bottom of the bin wall of the filtering bin 1 is connected with an underframe 101, a planet wheel 3 is arranged on the underframe 101, and the planet wheel is meshed with the main gear 2, driven by a motor and rotates around the main gear, so that the filtering bin 1 is driven to rotate around the center of the main gear 2;
a transition wheel 4 is arranged on one side of the planet wheel 3, the transition wheel 4 is rotatably connected to the bottom frame 101 and meshed with the planet wheel 3, the transition wheel 4 is hinged with a connecting rod 5, and the end part of the connecting rod 5 is hinged with a discharge plate 6;
the bottom of the filter bin 1 is provided with a material discharging bin 7, the material discharging bin 7 is of a fixed structure and does not rotate along with the filter bin 1, the material discharging bin 7 is communicated with the filter bin 1 through an upper opening, openings are formed in two sides of the material discharging bin 7, adsorption particles falling into the material discharging bin 7 are pushed out of the material discharging bin 7 through a material discharging plate 6, and the material discharging bin 7 enters a recovery bin 8 arranged on the wall of the filter tower.
Regarding the arrangement of the discharge bin 7, the prior art adopts the steps that the adsorption particles are collected in a centralized way at the bottom of the tower and then are pumped out of the tower through a pipeline; this poses a problem that when the adsorption particles are extracted, the solution inside is inevitably extracted, and the system cannot determine whether the extracted solution is completely adsorbed; in another case, if the adsorbed particles are collected at the bottom of the tower, the bottom of the tower must be modified, for example, a tapered bottom is preferably formed to facilitate the concentration of the adsorbed particles; this further increases costs and further modifications are required if the modification of the column bottom would also lead to problems with the discharge of liquid effluent;
the idea of the embodiment is that the filter bin 1 is arranged at the middle part, then the discharge bin is arranged at the bottom of the filter bin 1, and the adsorption particles at the bottommost layer are discharged in the discharge bin; this process is continued, i.e. the filtration cartridge 1 filters the solution normally, and the bottommost adsorbed particles must be the longest in adsorption time and the fastest saturated, and should therefore be discharged for replacement.
In addition, the discharge direction is selected to be transverse discharge and is vertical to the liquid flow direction, so that the solution discharge can be avoided as much as possible, and the discharge direction is the bottommost part of the filter bin and even if part of the solution discharge liquid has little influence.
In a specific structure, as shown in fig. 4, the discharge bin 7 is positioned in the filter bin 1 and is rotatably connected with the filter bin 1, a discharge groove is formed in the bottom of the discharge bin 7, the discharge plate 6 is slidably connected in the discharge groove, and the bottommost adsorption particles are gathered in the discharge groove and discharged out of the tower along with the sliding of the discharge plate 6; the discharge groove is a rectangular groove, and as shown in the figure, two ends of the groove are opened; the material discharging bin 7 can be arranged to be a cylindrical structure at the upper part and matched with the bin wall of the filtering bin, and the lower part is obliquely and transitionally called a square material discharging groove of a factory, so that the concentration of the adsorbed particles is facilitated.
The bottom side wall of the filter bin 1 is provided with a notch 102, the side wall of the filter tower is symmetrically provided with two through grooves, and the two through grooves are communicated with the recovery bin 8.
An elution bin 12 is arranged at the top of the filtering tower, elution liquid is contained in the elution bin 12, a channel is connected between the recovery bin 8 and the elution bin 12, a lifting belt is arranged in the channel, the lifting belt extracts the adsorption particles in the recovery bin 8 and transports the adsorption particles to the direction of the elution bin 12, the elution bin 12 discharges the elution liquid, and the adsorption particles on the lifting belt are subjected to counter-current elution;
the eluted adsorbent particles are discharged from the second input port 10 into the column.
The working principle is described in detail below with reference to the above description and the attached drawings: in operation, as shown in fig. 2-4, the motor is started to drive, the planet wheel 3 rotates around the main gear 2 with the wall of the filter bin 1, and a mechanism similar to a crank block composed of the transition wheel 4, the connecting rod 5 and the discharge plate 6 slides back and forth in the discharge chute. The entire mechanism is configured such that when the notch 102 is rotated into abutment with the recovery bin on the right (the left and right hand description is with reference to figure 3 only), the discharge plate 6 is just pushed towards the right; when the notch 102 is rotated into abutment with the left recovery bin, the discharge plate 6 is just pushed towards the left.
The adsorption particles return to the top of the tower from the recovery bin 8 according to the design of the lifting belt and then are sprayed downwards, and the filter bin 1 slowly rotates all the time, so that the adsorption particles can uniformly enter the filter bin 1 to be remained.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A method for treating ginseng filtrate wastewater is characterized by comprising the following steps: the method comprises the following steps:
iron-carbon microelectrolysis: adjusting the pH value of the ginseng filtrate wastewater to be acidic, and carrying out iron-carbon micro-electrolysis reaction to obtain a treatment solution I;
fenton oxidation: adding 1-3% of hydrogen peroxide with the mass fraction of 30% into the treatment liquid I, and oxidizing for 1h at the water temperature of 20-30 ℃ to obtain a treatment liquid II;
flocculation and precipitation: adding caustic soda flakes into the treatment liquid II to adjust the pH value to 8-9; adding PAM 0.01% (mass fraction), rapidly stirring for 0.1-0.5min, mixing, and filtering to obtain filtrate III;
and (3) adsorption decoloration: adding an adsorbent into the filtrate III, and filtering to obtain a filtrate IV;
biochemical treatment: the filtrate IV enters a biochemical pool to stay and then is discharged;
the method also comprises an implementation system of the method, wherein the implementation system comprises a filter tower, and the filter tower is used for adsorbing the filtrate III;
a filtering bin (1) is installed in the filtering tower, the filtering bin (1) is filled with adsorption particles, a driving box is arranged at the bottom of the filtering bin (1), and a driving mechanism in the driving box drives the filtering bin (1) to rotate around the center of the filtering bin; the top of the filtering tower is provided with two input ports, a first input port (9) obliquely sprays filtrate III, a second input port (10) obliquely sprays adsorption particles, the spraying directions of the filtrate III and the adsorption particles are intersected, so that the filtrate III and the adsorption particles are mixed in the air and finally enter the filtering bin (1), the adsorption particles are retained and stored by the filtering bin (1), and the filtrate III is filtered out from the filtering bin (1); a main gear (2) is installed in the driving box, a rack is arranged on the inner wall of the filtering tower, the main gear (2) is fixedly installed on the rack, the bottom of the wall of the filtering bin (1) is connected with an underframe (101), a planet gear (3) is installed on the underframe (101), the planet gear is meshed on the main gear (2), is driven by a motor and rotates around the main gear, and therefore the filtering bin (1) is driven to rotate around the center of the main gear (2); a transition wheel (4) is arranged on one side of the planet wheel (3), the transition wheel (4) is rotatably connected to the bottom frame (101) and meshed with the planet wheel (3), the transition wheel (4) is hinged with a connecting rod (5), and the end part of the connecting rod (5) is hinged with a discharge plate (6); the bottom of the filter bin (1) is provided with a discharge bin (7), the discharge bin (7) is of a fixed structure and does not rotate along with the filter bin (1), the discharge bin (7) is provided with an upper opening communicated with the filter bin (1), openings are formed in two sides of the discharge bin (7), adsorption particles falling into the discharge bin (7) are pushed out of the discharge bin (7) by a discharge plate (6) and enter a recovery bin (8) arranged on the tower wall of the filter tower.
2. The method for treating the ginseng filtrate wastewater according to claim 1, wherein the method comprises the following steps: dilute waste acid is used for adjusting the pH value of the wastewater to 3.0-5.0 in the iron-carbon micro-electrolysis reaction; the reagents added in the iron-carbon reaction comprise 60-80 meshes of iron powder and carbon powder, the adding amount of the iron powder is 1.5-2.5% of the mass of the wastewater, the volume ratio of the iron powder to the carbon powder is 1:1-1.5, and the reaction time is 3.0-4.0h, so that the treatment fluid I is obtained.
3. The method for treating the ginseng filtrate wastewater according to claim 1, wherein the method comprises the following steps: in the step of flocculation precipitation, after the medicament is put into the device, the rapid stirring speed is 120-180r/min; then slowly stirring for 10-20 min, and then settling, wherein the slow stirring speed is 15-40r/min.
4. The method for treating the ginseng filtrate wastewater according to claim 1, wherein the method comprises the following steps: in the step of flocculation and precipitation, a coagulant is added at intervals of PAM, and the coagulant is one of polyferric sulfate, polyferric chloride, polyaluminum sulfate and polyaluminum chloride.
5. The method for treating the ginseng filtrate wastewater according to claim 4, wherein the method comprises the following steps: the discharge bin (7) is positioned in the filter bin (1) and is rotationally connected with the filter bin (1), a discharge groove is formed in the bottom of the discharge bin (7), the discharge plate (6) is slidably connected in the discharge groove, and the adsorption particles at the bottommost part are gathered in the discharge groove and are discharged out of the tower along with the sliding of the discharge plate (6); the bottom side wall of the filter bin (1) is provided with a notch (102), the side wall of the filter tower is symmetrically provided with two through grooves, and the two through grooves are communicated with a recovery bin (8).
6. The method for treating the ginseng filtrate wastewater according to claim 5, wherein the method comprises the following steps: an elution bin (12) is arranged at the top of the filtering tower, elution liquid is contained in the elution bin (12), a channel is connected between the recovery bin (8) and the elution bin (12), a lifting belt is arranged in the channel, the lifting belt lifts the adsorption particles in the recovery bin (8) to be transported towards the direction of the elution bin (12), the elution bin (12) discharges the elution liquid, and the adsorption particles on the lifting belt are subjected to countercurrent elution; the eluted adsorbent particles are discharged from the second inlet (10) into the column.
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Address after: Room F1012, Building 1, No. 1378 Wenyi West Road, Cangqian Street, Yuhang District, Hangzhou City, Zhejiang Province, 311121 Patentee after: Zhejiang Jinglijie Intelligent Technology Co.,Ltd. Address before: Room f218, building 1, 1378 Wenyi West Road, Cangqian street, Yuhang District, Hangzhou City, Zhejiang Province Patentee before: Zhejiang jinglijie Environmental Technology Co.,Ltd. |
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Denomination of invention: A method and implementation system for treating ginseng filtrate wastewater Granted publication date: 20230407 Pledgee: Zhejiang Hangzhou Yuhang Rural Commercial Bank Co.,Ltd. Cangqian Branch Pledgor: Zhejiang Jinglijie Intelligent Technology Co.,Ltd. Registration number: Y2024980003583 |