CN102390909B - Method for treating nucleic acid waste water - Google Patents
Method for treating nucleic acid waste water Download PDFInfo
- Publication number
- CN102390909B CN102390909B CN2011103092393A CN201110309239A CN102390909B CN 102390909 B CN102390909 B CN 102390909B CN 2011103092393 A CN2011103092393 A CN 2011103092393A CN 201110309239 A CN201110309239 A CN 201110309239A CN 102390909 B CN102390909 B CN 102390909B
- Authority
- CN
- China
- Prior art keywords
- tank
- sludge
- nucleic acid
- waste water
- pond
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000002351 wastewater Substances 0.000 title claims abstract description 35
- 150000007523 nucleic acids Chemical class 0.000 title claims abstract description 23
- 102000039446 nucleic acids Human genes 0.000 title claims abstract description 23
- 108020004707 nucleic acids Proteins 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title abstract description 37
- 239000010802 sludge Substances 0.000 claims abstract description 57
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000000126 substance Substances 0.000 claims abstract description 23
- 238000001728 nano-filtration Methods 0.000 claims abstract description 20
- 239000012528 membrane Substances 0.000 claims abstract description 19
- MIDXCONKKJTLDX-UHFFFAOYSA-N 3,5-dimethylcyclopentane-1,2-dione Chemical compound CC1CC(C)C(=O)C1=O MIDXCONKKJTLDX-UHFFFAOYSA-N 0.000 claims abstract description 17
- 235000013736 caramel Nutrition 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 238000012545 processing Methods 0.000 claims abstract description 12
- 230000020477 pH reduction Effects 0.000 claims abstract description 10
- 238000000926 separation method Methods 0.000 claims abstract description 9
- 230000007062 hydrolysis Effects 0.000 claims abstract description 8
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 8
- 239000000701 coagulant Substances 0.000 claims abstract description 7
- 159000000007 calcium salts Chemical class 0.000 claims abstract description 4
- 230000000593 degrading effect Effects 0.000 claims abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims description 23
- 238000001914 filtration Methods 0.000 claims description 11
- 239000000047 product Substances 0.000 claims description 10
- 238000004065 wastewater treatment Methods 0.000 claims description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 6
- 239000006228 supernatant Substances 0.000 claims description 6
- 229920002521 macromolecule Polymers 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000001216 nucleic acid method Methods 0.000 claims description 5
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 239000013618 particulate matter Substances 0.000 claims description 4
- 239000002562 thickening agent Substances 0.000 claims description 4
- 229910002651 NO3 Inorganic materials 0.000 claims description 3
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 3
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 3
- 230000002906 microbiologic effect Effects 0.000 claims description 3
- 239000005416 organic matter Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 239000002028 Biomass Substances 0.000 claims description 2
- 238000005189 flocculation Methods 0.000 abstract description 9
- 230000016615 flocculation Effects 0.000 abstract description 9
- 150000003839 salts Chemical class 0.000 abstract description 7
- 229920000642 polymer Polymers 0.000 abstract description 6
- 238000004062 sedimentation Methods 0.000 abstract description 5
- 238000007599 discharging Methods 0.000 abstract description 3
- 244000005700 microbiome Species 0.000 abstract description 3
- 239000002245 particle Substances 0.000 abstract description 2
- 125000004122 cyclic group Chemical group 0.000 abstract 1
- 230000003301 hydrolyzing effect Effects 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 230000008569 process Effects 0.000 description 23
- 238000005516 engineering process Methods 0.000 description 13
- 239000010865 sewage Substances 0.000 description 13
- 239000003814 drug Substances 0.000 description 10
- 230000003647 oxidation Effects 0.000 description 9
- 238000007254 oxidation reaction Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 239000007787 solid Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000001556 precipitation Methods 0.000 description 6
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 5
- 239000002253 acid Substances 0.000 description 5
- 230000001376 precipitating effect Effects 0.000 description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- 150000001720 carbohydrates Chemical class 0.000 description 4
- 238000009388 chemical precipitation Methods 0.000 description 4
- 230000018044 dehydration Effects 0.000 description 4
- 238000006297 dehydration reaction Methods 0.000 description 4
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- 239000011574 phosphorus Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000001112 coagulating effect Effects 0.000 description 3
- 239000000571 coke Substances 0.000 description 3
- 239000000084 colloidal system Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000002957 persistent organic pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000009280 upflow anaerobic sludge blanket technology Methods 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 230000003851 biochemical process Effects 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 239000001506 calcium phosphate Substances 0.000 description 2
- 229910000389 calcium phosphate Inorganic materials 0.000 description 2
- 235000011010 calcium phosphates Nutrition 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 239000013043 chemical agent Substances 0.000 description 2
- 238000000855 fermentation Methods 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 235000002864 food coloring agent Nutrition 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 150000002505 iron Chemical class 0.000 description 2
- -1 is the latter Chemical compound 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 238000005374 membrane filtration Methods 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 150000003016 phosphoric acids Chemical class 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910017119 AlPO Inorganic materials 0.000 description 1
- 241000272173 Calidris Species 0.000 description 1
- 239000004278 EU approved seasoning Substances 0.000 description 1
- 235000001018 Hibiscus sabdariffa Nutrition 0.000 description 1
- 244000061176 Nicotiana tabacum Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 241000269799 Perca fluviatilis Species 0.000 description 1
- 235000005291 Rumex acetosa Nutrition 0.000 description 1
- 240000007001 Rumex acetosella Species 0.000 description 1
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 1
- 229930006000 Sucrose Natural products 0.000 description 1
- 241000589651 Zoogloea Species 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 150000001299 aldehydes Chemical group 0.000 description 1
- 159000000013 aluminium salts Chemical class 0.000 description 1
- 229910000329 aluminium sulfate Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000003385 bacteriostatic effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 235000012970 cakes Nutrition 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 235000019219 chocolate Nutrition 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 235000008504 concentrate Nutrition 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000000502 dialysis Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005837 enolization reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 235000011194 food seasoning agent Nutrition 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910000000 metal hydroxide Inorganic materials 0.000 description 1
- 150000004692 metal hydroxides Chemical class 0.000 description 1
- 229910001463 metal phosphate Inorganic materials 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 244000005706 microflora Species 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 235000013379 molasses Nutrition 0.000 description 1
- 238000006396 nitration reaction Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 235000021110 pickles Nutrition 0.000 description 1
- 229920000867 polyelectrolyte Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 235000003513 sheep sorrel Nutrition 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000005720 sucrose Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000006188 syrup Substances 0.000 description 1
- 235000020357 syrup Nutrition 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000009279 wet oxidation reaction Methods 0.000 description 1
Images
Classifications
-
- 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
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a method for treating nucleic acid waste water. The method comprises the following steps of: feeding the nucleic acid waste water into a regulating basin to be homogenized; then feeding the nucleic acid waste water into a two-phase anaerobic reactor, fully hydrolyzing high polymer organic matters and particles into micro molecular organic matters by virtue of a hydrolysis acidification tank, reducing concentration by virtue of a methane producing tank, collecting, utilizing or processing the methane, and ensuring effluent to flow into an activated sludge tank; degrading most organic matters under the action of aerobic microorganisms, and ensuring the effluent to flow into a secondary sedimentation tank; carrying out mud-water separation, wherein one part of sludge at the bottom reflows into the activated sludge tank and the two-phase anaerobic reactor, excess sludge is discharged into the sludge tank, and a supernate flows into a chemical dephosphorization sedimentation tank; adding a ferric salt, a calcium salt, a coagulating agent and a flocculation aid, carrying out solid-liquid separation, ensuring the supernate to flow into a collecting tank, and discharging sludge at the bottom into the sludge tank; ensuring waste water in the collecting tank to flow into a nanofiltration system by virtue of a multi-medium filter tank, discharging final effluent up to the standard, and further concentrating a membrane concentration solution to extract a caramel product. By applying the method disclosed by the invention, pollution is treated, valuable resource is recycled, and resource cyclic utilization is realized.
Description
Technical field
The present invention relates to the nucleic acid wastewater treatment method, belong to the environment-friendly engineering technology.
Background technology
The waste water that Yeast Nucleic Acid production emits has the COD(chemical oxygen demand (COD)) high, SS(suspended solid) value greatly, characteristics such as the pH value is on the low side, viscosity is big, and contain ammonia nitrogen in high density, phosphoric acid salt and refractory organic, and refractory organic is to constitute the extremely unmanageable essential reason of Yeast Nucleic Acid waste water based on caramel.Caramel is a kind of gelatinoid, is made up of the macromolecular compound of volatility and nonvolatile low molecular compound and non-dialysis.The colour generation thing of caramel namely is the latter, accounts for 25% of total solid, and the essentially consist of caramel smell namely is aldehyde, the ketone volatile matter in the above-mentioned low molecular compound.
Because Yeast Nucleic Acid manufacturer is less, factory effluent water quality also has more differently with raw materials for production are different with technology, and its concentration for the treatment of is very big, and therefore Processing Technology Research and the engineering practice of Yeast Nucleic Acid waste water quite lack at present.Some limited documents show, adopt the diluted Yeast Nucleic Acid waste water of UASB art breading that COD clearance is preferably arranged, but this studies and be laboratory scale, and water inlet is diluted to COD and is about 3500mg/L.Other has employing coagulating sedimentation-ClO 2 catalyzed oxidation-two stage biological catalytic oxidation combination process to handle nucleic acid waste water, wherein at first by coagulating sedimentation COD is down to 9080 mg/L from 16509mg/L, by ClO 2 catalyzed oxidation COD is down to 537mg/L from 9080 mg/L again, though technical have its feasibility, but in its processing cost only medicament expense namely be difficult to substantially bear, and invest high.The treatment process of research at present and practice is handled the technology of (coagulating sedimentation+advanced oxidation) combination with biochemical treatment (anaerobism+aerobic) and materialization generally, but these technologies are still immature, or exists and invest and problem such as working cost is high.
Nucleic acid waste water complicated component contains pollutents such as polymer caramel in the waste water, waste strength height, CODcr contain amount high in salt and reach 2% up to 16000mg/l in the waste water, and contains the SO that suppresses the biochemical treatment effect
4 2-Ion; Organism, suspended substance, solvability and colloidality solids concn height, biodegradability is poor, and waste water has obvious color and smell, contains the material of difficult degradation and the microbiotic of bacteriostatic action is arranged, and bio-toxicity is arranged, and is more difficult.
At present, be difficult to maybe the polymer organic pollutant that should not handle with biochemical process at this class, some materilization freatment methods have appearred both at home and abroad, as chemical flocculation precipitation method and electrochemical oxidation, ozone oxidation and Fenton oxidation style, catalytic wet oxidation method even depth oxidation technology, but imperfect and ripe as yet, and cost is higher.Developed country generally adopts this type of expensive high-level oxidation technology thoroughly to handle this class waste water, but in developing country, because this type of wastewater flow rate that produces is huge, can't not stint expensive high cost with its thorough processing as developed country.
The domestic company that mainly is engaged in the nucleic acid sewage treatment equipment has:
Blue or green environmental protection company is known in Fujian, adopts acidication+SBR treatment process, and after the biochemistry debugging, CODcr reaches 5000mg/l, can't reach emission standard, and discharging contains H behind the acidication
2The pollutent of S gas.Foochow green bright environmental protection company adopts anaerobic reactor and IC anaerobic reactor, and its effect does not all reach desired design, and CODcr reaches 12000mg/l.
Nanjing film company adopts membrane treatment process, and CODcr reaches below the 1000mg/l, but the dense water after film is handled reaches 30%, and dense water concentration reaches three times of former water, can't propose concentrated water treatment method.
Nucleic acid wastewater biochemical process is subjected to SO
4 2-, polymer caramel and high salt ion interference, cause the biochemical time long, in biological process, produce H
2S foul gas and the requirement that can't reach qualified discharge.Whether the technological development bottleneck is can to develop does not a kind ofly have that secondary pollution, working cost are low, stably reaching standard can make biochemical system start fast treatment process again.
Summary of the invention
The object of the present invention is to provide a kind of nucleic acid method of wastewater treatment, pollute to administer, reclaim precious resources, realize resource circulation utilization.
In order to achieve the above object, technical scheme of the present invention is:
A kind of nucleic acid method of wastewater treatment the steps include:
The first step will be sent into equalizing tank from the nucleic acid waste water in production workshop and all measure homogenizing with the balanced water yield and water concentration;
Second step, be promoted to two-phase anaerobic reactor by pump after all measuring homogenizing, make macromolecule organic and particulate matter fully be hydrolyzed to small organic molecule through hydrolysis acidification pool, multiparity methane pond reduces the concentration of pollutent again, collect and utilize or handle methane, water outlet flows into activated sludge tank;
The 3rd step by aerobic microbiological effect most of organism of degrading, and made ammonia nitrogen be oxidized to nitrite and nitrate at activated sludge tank, was back to hydrolysis acidification pool, is reduced into nitrogen and discharges in anaerobic environment, and the activated sludge tank water outlet flows into second pond;
The 4th step, carry out mud-water separation at second pond, bottom mud part returnedactivatedsludge pond and two-phase anaerobic reactor are to replenish biomass, and excess sludge enters sludge sump, and the second pond supernatant liquor enters the chemical dephosphorization settling tank;
The 5th step added molysite, calcium salt and coagulating agent and coagulant aids at the chemical dephosphorization settling tank, and after solid-liquid separation, supernatant liquor flows into water collecting basin, and bottom mud enters sludge sump;
In the 6th step, waste water is promoted to the multi-medium filtering pond by pump again in the water collecting basin;
In the 7th step, the water outlet in multi-medium filtering pond enters nanofiltration system after by the high-pressure pump supercharging;
In the 8th step, nanofiltration system is filtered, final outflow water qualified discharge, the further concentration extraction caramel product of membrane concentration liquid.
Wherein, after the mud of the excess sludge of the 4th step second pond and the 5th step chemical dephosphorization settling tank drains into sludge sump, dewater to the machine room that dewaters through sludge thickener, dewatered sludge is sent processing (as deliver to refuse landfill and carry out the landfill disposal), the utilization of resources of pressing filtering liquid backflow equalizing tank outside again.
In second step, two-phase anaerobic reactor is selected the anaerobic baffle plate reaction tank for use.
After adopting such scheme, the present invention had both considered the technical feasibility of wastewater treatment, take into account the economic rationality of processing cost again, optimum combination each efficient treatment technology, adopt the treatment process of " anaerobic-aerobic-membrane filtration ", and the reactor of selecting for use respectively efficiently at each processing unit, being suitable for is handled; With principal pollutant COD in the nucleic acid waste water, BOD, TP and ammonia nitrogen are effectively removed, non-secondary pollution; Reactor is efficiently integrated, and floor space is little; (F/M) is low for sludge loading, and surplus sludge volume is little; The journey investment economizes; Working cost is little; Can reclaim caramel product; Realize administering and pollute, reclaim precious resources and resource circulation utilization.
Description of drawings
Fig. 1 is schema of the present invention.
Label declaration
Equalizing tank 1 two-phase anaerobic reactor 2
Sludge sump 5 sludge thickeners 51
Water collecting basin 7 multi-medium filtering ponds 8
Embodiment
As shown in Figure 1, be preferred embodiment of the present invention.
The first step will be sent into equalizing tank 1 through collection tube from the nucleic acid waste water in production workshop and all measure homogenizing, with the balanced water yield and water concentration.
In second step, the nucleic acid waste water of all measuring after the homogenizing is promoted to two-phase anaerobic reactor 2 by pump (common device, not shown).Two-phase anaerobic reactor 2 is selected the anaerobic baffle plate reaction tank for use.
Anaerobic baffle plate reaction tank (ABR) is that the beginning of the eighties is by a kind of new high-efficiency anaerobic reactor of people such as the McCarty proposition of U.S. Stanford university.Some vertical flow deflectors are set in the reactor, reactor is separated into the several reaction of series connection, each reaction chamber can be regarded a relatively independent UASB as, therefore in the textural series connection that can be regarded as a plurality of UASB.ABR on the fluidised form between plug-flow and fully between the mixing pattern, hydraulic performance in the single compartment is similar to hybrid fully, then be similar to pulling flow type on the whole, this fluidised form is conducive to fully contacting between waste water and the anaerobic sludge, accelerate the transmission of matrix from waste water to microorganism cells, improve the capacity utilization of reactor.The construction features of ABR uniqueness and fluidised form make can inoculate and culture out in each compartment with this compartment in sewage quality, the microflora that envrionment conditions adapts, thereby cause anaerobic reaction to produce acid mutually and the product methane journey of handing down is separated, make ABR be equivalent to a diphasic anaerobic treatment system at overall performance.ABR compares with other anaerobic reactors has following characteristics: 1. than short hydraulic detention time; 2. the mud interception capacity is strong, and the granule sludge settling property that forms in the reactor is good, can long-play and need not spoil disposal; 3. can in wider temperature and concentration range, move; 4. the structural property of pulling flow type makes system have very high stability to waterpower and organic impact load; 5. toxic substance and inhibitory substance had better buffering adaptive faculty; 6. hydraulics is good, the capacity utilization height, and system has more excellent effluent quality.
Two-phase anaerobic reactor is a kind of novel anaerobic biological treatment technology, Ghosh in 1971 and Pohland propose two-phase fermentation concept first, namely form the diphasic anaerobic fermentation system producing acid and producing two stage of methane separate reactors at optimal environmental condition separately and with two reactors in series.Its characteristics: 1. produce acid and produce two stages of methane independently, improve speed of reaction separately; 2. acidification reactor has certain shock absorption, alleviates impact load to the influence of follow-up methane-producing reactor; 3. the acidification reactor reaction process is fast, and hydraulic detention time is short, and COD concentration can be removed 20%-25%, can alleviate the load of methane-producing reactor greatly; 4. load is high, and reactor volume is little, and capital cost is low.
Because it is acid that waste water is, and contain a large amount of macromolecule organics and particulate matter, therefore adopts two-phase anaerobic reactor, and acid-producing microorganisms and methanogen are being played one's part to the full under the adapt circumstance condition respectively separately.Through hydrolysis acidification pool 21, make macromolecule organic and particulate matter fully be hydrolyzed to small organic molecule, multiparity methane pond 22 anaerobic digestion generation methane reduces Pollutant levels greatly again, collects and utilizes or handle methane, and water outlet flows into activated sludge tank 5.
The 3rd step, at activated sludge tank 3 by highly active aerobic microbiological effect, most of organism of degrading, and make ammonia nitrogen be oxidized to nitrite and nitrate, be back to hydrolysis acidification pool 21, be reduced into nitrogen and discharge (nitrogen that the reduction back produces can uncontrollable discharge and do not have pipeline) in anaerobic environment, reach the purpose of denitrification denitrogenation, activated sludge tank 3 water outlets flow into second pond 4.
The 4th step, carry out mud-water separation at second pond 4, bottom mud part returnedactivatedsludge pond 3 and two-phase anaerobic reactor 2 are to replenish each reactor organisms amount, and excess sludge enters sludge sump 5, and second pond 4 supernatant liquors enter chemical dephosphorization settling tank 6.
The 5th step added molysite, calcium salt and coagulating agent and coagulant aids at chemical dephosphorization settling tank 6, and after solid-liquid separation, supernatant liquor flows into water collecting basin 7, and bottom mud enters sludge sump 5.
Chemical dephosphorization is finished by the chemical precipitation process, chemical precipitation refers to by adding the inorganic metal salt medicament in sewage, and deliquescent salt in itself and the sewage is after mixing as phosphoric acid salt, form the material of particulate state, non-solubility, what this process related to is so-called phase transition behavior.In fact after adding chemical agent, what carry out in the sewage is not only precipitin reaction, is also carrying out the chemical flocculation reaction simultaneously.The settlement of sewage reaction refers to the material of dissolved form in the water, major part is the process that ion shape material is converted to non-dissolving, Granular forms, flocculation then is the process of the big shape of solids one-tenth adhered to one another of tiny non-dissolved form, so flocculation is not phase transition behavior.
In process for purifying waste water, flocculation and precipitation all are very important, but flocculation is be used to the sedimentation effect that improves settling tank, and precipitation then is used for the removal of sewage dissolved phosphorus.If utilize depositing technology to realize the conversion of phase, then when added deliquescent metal-salt medicament in sewage after, deliquescent phosphorus is converted into the phosphate metal salt of non-solubility on the one hand, also can produce the oxyhydroxide (depending on the pH value) of non-solubility simultaneously.On the other hand, analyse increase and the less non-solubility solids of thing along with precipitation and build up into bigger non-solubility solids, make stable elimination of colloid stability, make by velocity slope or diffusion process and take off steady colloid and contact with each other the generation flocs unit.At last by solid-liquid separating step, the sewage that is purified and a solid liquid enriched material (chemical sludge) reach the purpose of chemical dephosphorization.
According to the basis of chemical precipitation reaction, in order to generate phosphate compounds, the chemical agent that is used for chemical dephosphorization mainly is metal-salt medicament and calcium hydroxide (white lime).After many high volence metal ion medicaments are added in the sewage, all can with sewage in the dissolved phosphorus ionic bond generate difficult deliquescent compound.For economic reasons, the metal-salt medicament for the phosphorus precipitating mainly is Fe
3+, Al
3+And Fe
2+Salt and lime.These medicaments use with solution and suspension state.Divalent iron salt only contains aerobic in sewage, could use in the time of being oxidized to trivalent iron salt.The reaction of competing with the precipitating reacting phase is metal ion and OH
-Reaction, so it should be noted the ionic weight of metal for various metal-salt product.Metal hydroxides can form the flocs unit of bulk, and this flocculation for precipitated product is favourable, also can adsorb the material of colloidal, trickle suspended particle simultaneously.It should be noted that organism is less important being that precipitation in the reaction of purpose chemistry precipitating removes with the chemical dephosphorization, but organic property colloid and condensing in the flocs unit of suspended substance then are conclusive processes when separating.
The precipitating effect is influenced by the pH value, and the solvability of metal phosphate equally also is subjected to the influence of pH.Being 5.0～5.5 for molysite optimal ph scope, is 6.0～7.0 for aluminium salt because in above pH value scope FePO
4Or AlPO
4The solvability minimum.Except the metal-salt medicament, calcium hydroxide is also as the precipitating medicament.In heavy folding process, that play a major role for the formation of the calcium phosphate of insoluble is not Ca
2+, but OH
-Ion, because along with the raising of pH value, the solvability of calcium phosphate reduces, and adopts Ca (OH)
2The pH value that dephosphorization requires is more than 8.5.
In the 6th step, waste water is promoted to multi-medium filtering pond 8 by pump (common device, not shown) again in the water collecting basin 7;
In the 7th step, the water outlet in multi-medium filtering pond 8 enters nanofiltration system 9 after by high-pressure pump (common device, not shown) supercharging;
In the 8th step, nanofiltration system 9 is filtered the final outflow water cities and towns water drain that enters up to standard, the further concentration extraction caramel product of membrane concentration liquid.
Nanofiltration membrane is a kind of novel separatory membrane that comes out the latter stage eighties, and its molecular weight cut-off is about 200-2000Da between reverse osmosis membrane and ultra-filtration membrane, can infer that thus nanofiltration membrane may have the microvoid structure about 1nm, so be referred to as " nanofiltration ".The nanofiltration membrane great majority are composite membranes, and its surface isolation layer is made of polyelectrolyte, thereby inorganic salt are had certain rejection.The principle of work of nanofiltration is under certain pressure, and when the mixed solution that contains the differing molecular quantity of material flow through nanofiltration membrane with certain flow velocity, solvent and see through film less than the small molecules solute in aperture became through liquid and is collected; Greater than the macromole solute of membrane pore size then tunicle hold back as concentrated solution and be recovered, thereby realize separating and the purpose that concentrates.
The effect of nanofiltration NF is to hold back the larger molecular organics COD that those can not be biochemical, nanofiltration molecular weight cut-off boundary is 500～1000, namely can hold back separation to most of macromole organic molecule and divalence, trivalent, the rejection of inorganic dissolved components such as monovalent salt generally is lower than 15%, so the clear liquid of nanofiltration can reach lower COD concentration level, and the osmotic pressure of film both sides is very little, and the rate of recovery can reach more than 85% easily like this.Nanofiltration technique investment and working cost are relatively low, are the more promising technology that comes into one's own at present.
Caramel colorant is the liquid jelly of a kind of sorrel or chocolate, be widely used in foodstuffs industry, in can, candy, beverage, drinks, seasonings, pickles, cake, tobacco and medicinal syrup as tinting material, Food and Argriculture OrganizationFAO, the World Health Organization, the European Economic Community and united States food and drug administration all classify caramel as natural food colour, and it accounts for more than 90% of food color sales volume.The generation of caramel colour is because the non-enzymatically browning reaction has taken place carbohydrate under certain condition.The non-enzymatically browning reaction is divided into two kinds: carbohydrate is subjected to the brown stain of thermal initiation to be called caramelize separately, the browning reaction that produces when aminocompound and carbohydrate exist simultaneously is called sugar-amine reaction or rice Maillard reaction, the result makes carbohydrate generation condensation, dehydration or enolization, colour developing takes place and show the browning reaction of distinguishing the flavor of.Sugar refinery can be with sucrose or molasses as the raw material of producing caramel colour, with it as byproduct exploitation, obvious economic.
The hardly degraded organic substance main component of nanofiltration membrane concentrated solution middle and high concentration is caramel, can take ultrafiltration-ion-exchange-further concentrating and separating of multiple-effect reduction vaporization to make caramel product, this produce market is big, high efficiency, therefore the nanofiltration membrane concentrated solution can be turned waste into wealth, and obtain obvious economic benefit, effectively remedy or reduce running cost, avoid simultaneously the fenton oxidation produce in a large number can't be hopeless predicament.
Can produce the excess sludge of some amount in the above-mentioned nucleic acid biological wastewater treatment process at the 4th step second pond 4, also can produce mud at the 5th step chemical dephosphorization settling tank 6, these mud need be handled, the sludge treatment purpose is to reduce moisture percentage in sewage sludge, reduce sludge volume, reach stable in properties, and create conditions for further disposing.Treatment process is to drain into sludge sump 5, dewaters through sludge thickener 51 to dehydration machine room 52 again, adopts the flow process of mechanical dehydration, and dehydrated sludge is sent processing (as deliver to refuse landfill and carry out the sanitary landfill disposal), the utilization of resources of pressing filtering liquid backflow equalizing tank outside.
The present invention is based on the combined system of ABR-activated sludge process+chemical precipitation dephosphorization-NF membrane sepn, biochemical part adopts the ABR-Activated Sludge Process, waste water reduces pollutant load greatly through biochemical reaction, remainder can not be adsorbed by activated coke Filtration Adsorption method by biochemical polymer pollutent, make discharged wastewater met the national standard, adsorb saturated back activated coke and adopt method for destructive distillation regeneration.The present invention has filled up domestic technological gap of at present still failing effectively to handle nucleic acid waste water, can be widely used in the nucleic acid wastewater treatment of pharmacy, food service industry, foodstuff additive and Health Products Enterprises.
Main innovate point of the present invention is: (1) is optimized combination to technical process, and each processing unit is carried out than choosing, adopts ABR-SBR-activated coke absorbing process to handle nucleic acid waste water; (2) research and develop ABR reactor treatment effect efficiently; (3) research and development activated sludge method processing technique, the impact of effectively resisting the water yield and organic pollutant; (4) research and development NF membrane sepn makes waste water through still there being the part can not biochemical polymer pollutent after the biochemical treatment, by qualified discharge behind the membrane sepn.
The present invention compares with domestic and international similar technology, and the product performance contrast after the processing is as follows:
Below only be a specific embodiment of the present invention, but design concept of the present invention is not limited thereto, allly utilizes this design that the present invention is carried out the change of unsubstantiality, all should belong to the behavior of invading protection domain of the present invention.
Claims (2)
1. nucleic acid method of wastewater treatment is characterized in that step is:
The first step will be sent into equalizing tank from the nucleic acid waste water in production workshop and all measure homogenizing;
Second step, after all measuring homogenizing, be promoted to two-phase anaerobic reactor by pump, two-phase anaerobic reactor is selected the anaerobic baffle plate reaction tank for use, make macromolecule organic and particulate matter fully be hydrolyzed to small organic molecule through hydrolysis acidification pool, multiparity methane pond reduces concentration again, collect and utilize or handle methane, water outlet flows into activated sludge tank;
The 3rd step by aerobic microbiological effect most of organism of degrading, and made ammonia nitrogen be oxidized to nitrite and nitrate at activated sludge tank, was back to hydrolysis acidification pool, is reduced into nitrogen and discharges in anaerobic environment, and the activated sludge tank water outlet flows into second pond;
The 4th step, carry out mud-water separation at second pond, bottom mud part returnedactivatedsludge pond and two-phase anaerobic reactor are to replenish biomass, and excess sludge enters sludge sump, and the second pond supernatant liquor enters the chemical dephosphorization settling tank;
The 5th step added molysite, calcium salt and coagulating agent and coagulant aids at the chemical dephosphorization settling tank, and after solid-liquid separation, supernatant liquor flows into water collecting basin, and bottom mud enters sludge sump;
In the 6th step, waste water is promoted to the multi-medium filtering pond by pump again in the water collecting basin;
In the 7th step, the water outlet in multi-medium filtering pond enters nanofiltration system after by the high-pressure pump supercharging;
In the 8th step, nanofiltration system is filtered, final outflow water qualified discharge, the further concentration extraction caramel product of membrane concentration liquid.
2. a kind of nucleic acid method of wastewater treatment as claimed in claim 1, it is characterized in that: after the mud of the excess sludge of the 4th step second pond and the 5th step chemical dephosphorization settling tank drains into sludge sump, dewater through sludge thickener to the machine room that dewaters again, dewatered sludge is sent processing outside, the utilization of resources of pressing filtering liquid backflow equalizing tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103092393A CN102390909B (en) | 2011-10-13 | 2011-10-13 | Method for treating nucleic acid waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103092393A CN102390909B (en) | 2011-10-13 | 2011-10-13 | Method for treating nucleic acid waste water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102390909A CN102390909A (en) | 2012-03-28 |
| CN102390909B true CN102390909B (en) | 2013-07-17 |
Family
ID=45858320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103092393A Expired - Fee Related CN102390909B (en) | 2011-10-13 | 2011-10-13 | Method for treating nucleic acid waste water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102390909B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105016568A (en) * | 2014-04-28 | 2015-11-04 | 宜兴市环球水处理设备有限公司 | Method for treating high salinity wastewater |
| CN105314794A (en) * | 2014-09-28 | 2016-02-10 | 苏州市白云环保工程设备有限公司 | Sodium carboxymethyl cellulose production wastewater treatment process |
| CN107540147A (en) * | 2016-06-23 | 2018-01-05 | 帕克环保技术(上海)有限公司 | The Waste Water Treatment and method of wastewater treatment of cellulose ethanol |
| CN106517618B (en) * | 2016-12-28 | 2023-06-09 | 厦门绿动力环境治理工程有限公司 | Integrated garbage percolator water purifying unit |
| CN108569817A (en) * | 2017-03-08 | 2018-09-25 | 北京朗新明环保科技有限公司 | A kind of coal chemical industrial waste water biochemical system processing unit |
| CN109133495A (en) * | 2018-07-23 | 2019-01-04 | 华南理工大学 | A kind of carbonless paper coating wastewater treatment and circulation reuse method |
| CN110183009A (en) * | 2019-04-23 | 2019-08-30 | 皓禹(厦门)环保有限公司 | The regeneration device and its method of municipal sewage plant discharge water |
| CN111875167A (en) * | 2020-07-29 | 2020-11-03 | 广东益诺欧环保股份有限公司 | System and method for comprehensive wastewater treatment in chemical industry park |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101519265A (en) * | 2009-04-09 | 2009-09-02 | 北京汉青天朗水处理科技有限公司 | Sewage treatment process and system |
| CN101723538A (en) * | 2008-10-24 | 2010-06-09 | 曾华 | Process for treating landfill leachate |
| CN201512454U (en) * | 2009-09-29 | 2010-06-23 | 嘉园环保股份有限公司 | Landfill leachate treatment equipment based on combination of high-efficiency reinforced biochemical treatment and membrane treatment |
-
2011
- 2011-10-13 CN CN2011103092393A patent/CN102390909B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101723538A (en) * | 2008-10-24 | 2010-06-09 | 曾华 | Process for treating landfill leachate |
| CN101519265A (en) * | 2009-04-09 | 2009-09-02 | 北京汉青天朗水处理科技有限公司 | Sewage treatment process and system |
| CN201512454U (en) * | 2009-09-29 | 2010-06-23 | 嘉园环保股份有限公司 | Landfill leachate treatment equipment based on combination of high-efficiency reinforced biochemical treatment and membrane treatment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102390909A (en) | 2012-03-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102390909B (en) | Method for treating nucleic acid waste water | |
| CN101157510B (en) | Process for treating waste water produced during biofermentation method for producing penicillin and intermediate 6-APA process | |
| CN100509664C (en) | Method for treating percolation liquid of water deficiency area garbage embedding field | |
| CN103232135B (en) | Treatment system and treatment method for coal-to-liquid wastewater | |
| Birwal et al. | Advanced technologies for dairy effluent treatment | |
| CN106830544A (en) | Light electrolysis Fenton EGSB A/O BCO BAF coagulating treatment pharmacy waste water systems | |
| CN106927628A (en) | Light electrolysis-Fenton-EGSB-A/O-BCO-BAF-coagulating treatment pharmacy waste water technique | |
| CN107473513B (en) | Bamboo product wastewater Fenton treatment device and method | |
| CN101698550A (en) | Advanced treating method of landfill leachate | |
| CN100509651C (en) | Combined technique for garbage filter liquor treatment | |
| CN101333050A (en) | Waste water treating process of salt-containing propenoic acid and/or salt-containing propylene ester | |
| CN102659281B (en) | Treatment method of liquor production wastewater | |
| CN103193366A (en) | Integrated treatment method of corn alcohol wastewater | |
| CN102295384A (en) | 1,4-butanediol chemical waste water treatment technology | |
| CN109516553A (en) | Efficient anaerobic denitrification organisms reactor | |
| CN102923916A (en) | Chemical pharmaceutical wastewater treatment system | |
| CN112645545A (en) | Garbage transfer station leachate treatment system and treatment method thereof | |
| CN203715460U (en) | Brewery wastewater treatment system | |
| CN201713415U (en) | Dye wastewater treatment device | |
| CN105502852B (en) | A kind of method of quick processing garbage burning factory landfill leachate | |
| CN101265000B (en) | Method for treating waste water in grape wine brewage | |
| CN103771655A (en) | Cellulose ethanol fermentation waste liquor treatment method | |
| CN208265976U (en) | A kind of landfill leachate concentration liquid zero-discharge treatment system | |
| CN109399856A (en) | A kind of semi-coke wastewater Zero discharge treatment method based on catalytic ozonation | |
| CN100509661C (en) | Treating technique of polyether polyatomic alcohol producing sewage recovering and utilization |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180608 Address after: 350001 12, room 12, New Asia building, 121 East Street, Gulou District, Fuzhou, Fujian. Patentee after: Fujian Ding Hui Environmental Protection Technology Development Co.,Ltd. Address before: 350000 611 Fujian Road torch high tech Pioneer Park, No. 4 Industrial Road, Gulou District, Fuzhou, Fujian, 2 and 3, respectively. Patentee before: Fujian Kehui Environmental Engineering Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210430 Address after: No.9 warehouse, Huaxiang paper, No.12 Yongjun Road, Sijin village, Xibin Town, Jinjiang City, Quanzhou City, Fujian Province, 362200 Patentee after: New Huanneng (Jinjiang) renewable resources Co.,Ltd. Address before: 350001 12, room 12, New Asia building, 121 East Street, Gulou District, Fuzhou, Fujian. Patentee before: Fujian Ding Hui Environmental Protection Technology Development Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 |