CN113072247A - Cosmetics sewage treatment system - Google Patents
Cosmetics sewage treatment system Download PDFInfo
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- CN113072247A CN113072247A CN202110309990.7A CN202110309990A CN113072247A CN 113072247 A CN113072247 A CN 113072247A CN 202110309990 A CN202110309990 A CN 202110309990A CN 113072247 A CN113072247 A CN 113072247A
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- cosmetic
- sewage
- sewage treatment
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- tank
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- 239000010865 sewage Substances 0.000 title claims abstract description 64
- 239000002537 cosmetic Substances 0.000 title claims abstract description 45
- 230000020477 pH reduction Effects 0.000 claims abstract description 27
- 230000007062 hydrolysis Effects 0.000 claims abstract description 25
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 25
- 238000004062 sedimentation Methods 0.000 claims abstract description 24
- 239000010802 sludge Substances 0.000 claims abstract description 23
- 238000001035 drying Methods 0.000 claims abstract description 19
- 230000003647 oxidation Effects 0.000 claims abstract description 11
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 11
- 230000001112 coagulating effect Effects 0.000 claims abstract description 8
- 238000000855 fermentation Methods 0.000 claims abstract description 8
- 230000001105 regulatory effect Effects 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 10
- 230000004151 fermentation Effects 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 3
- 238000006731 degradation reaction Methods 0.000 claims description 3
- 230000014759 maintenance of location Effects 0.000 claims description 2
- 230000003750 conditioning effect Effects 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000000126 substance Substances 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 239000000701 coagulant Substances 0.000 description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- OSDLLIBGSJNGJE-UHFFFAOYSA-N 4-chloro-3,5-dimethylphenol Chemical compound CC1=CC(O)=CC(C)=C1Cl OSDLLIBGSJNGJE-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000003301 hydrolyzing effect Effects 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- DNWUDGLESVLDDQ-UHFFFAOYSA-N OCC(O)CO.CCCCCCCCCCCCCCCCCCO Chemical compound OCC(O)CO.CCCCCCCCCCCCCCCCCCO DNWUDGLESVLDDQ-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 231100000481 chemical toxicant Toxicity 0.000 description 1
- 239000000490 cosmetic additive Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 150000002191 fatty alcohols Chemical class 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000693 micelle Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
Abstract
The invention relates to the field of cosmetic sewage treatment, and discloses a cosmetic sewage treatment system which comprises a grating system, a regulating system, a hydrolysis acidification system, a contact oxidation system, a coagulating sedimentation system and a sludge drying system; the grid system includes a grid well of a brick-and-concrete structure; the adjusting system comprises a sewage adjusting tank with a lifting pump; the hydrolysis acidification system comprises a hydrolysis acidification pool for anaerobic fermentation; the contact oxidation system comprises a submerged biological filter with an air compressor; the coagulating sedimentation system comprises a sedimentation tank with a dosing barrel; the sludge drying system comprises a plurality of sludge drying tanks. Through the arrangement, the cosmetic sewage treatment system can reasonably and effectively treat the cosmetic sewage, and compared with a conventional cosmetic sewage treatment system, the cosmetic sewage treatment system provided by the utility model can save the cost.
Description
Technical Field
The invention belongs to the field of cosmetic sewage treatment, and particularly relates to a cosmetic sewage treatment system.
Background
The amount of cosmetic sewage is not large, but the concentration of pollutants is high. Due to the characteristics of the main process, even if the yield is large, the water quantity of the produced sewage is not large, but the water quantity and the water quality fluctuate greatly. The sewage has complex components. On the one hand, the raw material components are complicated. Such as sodium fatty Alcohol Ether Sulfate (AES), cocapyltryetaine, Parachlorometaxylenol (PCMX), essence, glycerol, etc. On the other hand, the process from the production of raw materials to the finished products of the cosmetics is long, and the number of byproducts is large, so that the components of pollutants in the sewage are various and complicated, and the sewage treatment difficulty is increased.
The chroma of sewage generated in the production of certain cosmetics is higher, the quantity of substances which are difficult to degrade is more, and the BOD and COD values of the sewage are low. The organic pollutants are mostly hard-to-biodegrade substances. Such as oil and fat pollutants like glycerol octadecanol, half fatty acid glyceride and the like and some cosmetic additives, has higher emulsification degree and more toxic and harmful substances.
There are many organic pollutants in the wastewater from cosmetic production that are toxic and harmful to microorganisms, and cosmetics containing toxic chemicals are generally concentrated in cosmetics having special uses.
Because the concentration of organic matters in the cosmetic sewage is high, the biodegradability of the cosmetic sewage is poor, if biological oxidation is directly carried out, the expected effect cannot be achieved, and the cost is expensive, so the treatment of the cosmetic sewage needs to be combined with various sewage treatment systems for comprehensive application, but how to reasonably and effectively combine various sewage treatment systems to be applied to the treatment of the cosmetic sewage is still the problem to be solved urgently in the field at present on the premise of convenient operation and cost control.
Disclosure of Invention
The invention aims to: in order to solve the problem that the prior art proposed in the background art cannot reasonably and effectively combine various sewage treatment systems to be applied to cosmetic sewage treatment on the premise of convenient operation and cost control, the invention provides a cosmetic sewage treatment system.
In order to achieve the purpose, the invention provides the following technical scheme: a cosmetic sewage treatment system comprises a grating system, a regulating system, a hydrolysis acidification system, a contact oxidation system, a coagulating sedimentation system and a sludge drying system;
the grid system includes a grid well of a brick-and-concrete structure;
the adjusting system comprises a sewage adjusting tank with a lift pump, and the input end of the sewage adjusting tank is communicated with the output end of the grid well;
the hydrolysis acidification system comprises a hydrolysis acidification pool for anaerobic fermentation, the input end of the lift pump is communicated with the output end of the sewage adjusting pool, and the output end of the lift pump is communicated with the hydrolysis acidification pool;
the contact oxidation system comprises a submerged biological filter with an air compressor, and the input end of the submerged biological filter is communicated with the output end of the hydrolysis acidification tank;
the coagulating sedimentation system comprises a sedimentation tank with a dosing barrel, and the input end of the sedimentation tank is communicated with the output end of the submerged biological filter;
the sludge drying system comprises a plurality of sludge drying tanks, and the input ends of the sludge drying tanks are respectively communicated with the output end of the sedimentation tank.
Further, the grid interval of the grid well is eight millimeters.
Further, the hydraulic retention time in the sewage adjusting tank is eight hours.
Further, the anaerobic fermentation process comprises a hydrolysis process, an acidification process, an acid degradation process and a methanation process.
Further, the air compressor is used for aerating the submerged biological filter.
Furthermore, the bottom end of the dosing barrel is communicated with the sedimentation tank through a hollow pipe, and an electric valve is arranged between the dosing barrel and the hollow pipe.
Furthermore, the plurality of sludge drying tanks are all used for drying sludge.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the cosmetic sewage enters the adjusting system after the suspended matters with larger particles are removed by the grating system, the cosmetic sewage with the large suspended matters removed is conveyed to the hydrolytic acidification system through the lifting pump in the adjusting system, the macromolecular organic matters in the cosmetic sewage are degraded into micromolecular organic matters through the anaerobic fermentation process in the hydrolytic acidification system, then the organic matters in the cosmetic sewage are oxidized and decomposed in the contact oxidation system, and finally, the colloidal substances in the sewage are neutralized into precipitates through the coagulating sedimentation system.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of a cosmetic waste water treatment system according to the present invention;
FIG. 2 is a schematic diagram of the anaerobic fermentation process 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.
In the cosmetic sewage treatment system provided by the present embodiment, as shown in fig. 1, the cosmetic sewage treatment system includes a grid system, a regulating system, a hydrolysis acidification system, a contact oxidation system, a coagulation precipitation system, and a sludge drying system; the grid system comprises a grid well of a brick-concrete structure; the adjusting system comprises a sewage adjusting tank with a lift pump, and the input end of the sewage adjusting tank is communicated with the output end of the grid well; the hydrolysis acidification system comprises a hydrolysis acidification tank for anaerobic fermentation, the input end of the lift pump is communicated with the output end of the sewage adjusting tank, and the output end of the lift pump is communicated with the hydrolysis acidification tank; the contact oxidation system comprises a submerged biological filter with an air compressor, and the input end of the submerged biological filter is communicated with the output end of the hydrolysis acidification tank; the coagulating sedimentation system comprises a sedimentation tank with a dosing barrel, and the input end of the sedimentation tank is communicated with the output end of the submerged biological filter; the sludge drying system comprises a plurality of sludge drying tanks, and the input ends of the sludge drying tanks are respectively communicated with the output end of the sedimentation tank. Cosmetic sewage enters a sewage treatment facility and flows through artificial grids with the interval of eight millimeters firstly, large suspended matters and particles in the cosmetic sewage are removed through the interception effect of the grids, then the cosmetic sewage automatically flows into a sewage adjusting tank in an adjusting system and stays in the sewage adjusting tank for eight hours, so that the sewage is completely collected, then the cosmetic sewage in the sewage adjusting tank is conveyed into a hydrolysis acidification tank in the hydrolysis acidification system through a lift pump, organic matters in the cosmetic sewage are decomposed into micromolecular organic matters after hydrolysis, acidification, acid degradation and methanation in the hydrolysis acidification tank, then the cosmetic sewage after hydrolysis acidification enters a submerged biological filter in a contact oxidation system, the micromolecular organic matters in the cosmetic sewage are further decomposed, and the submerged biological filter has the advantage of not generating return sludge, furthermore, the return sludge is not cleaned by wasting manpower and material resources, and an air compressor in the submerged biological filter is used for aerating the filter, wherein the aeration is a means for making air and water strongly contact, and aims to dissolve oxygen in the air into the water or release unnecessary gas and volatile substances in the water into the air. In other words, it is a means of facilitating mass exchange between gas and liquid. After the treatment of the steps, cosmetic sewage is finally introduced into a sedimentation tank in a coagulation system, a coagulant is added into the sedimentation tank through a dosing barrel, the coagulant is electrolyte, micelle is formed in water and is electrically neutralized with colloidal substances in the wastewater to form fluff particle sedimentation, in addition, as the electric valve is arranged on the dosing barrel, the speed of the coagulant can be controlled through the action of the electric valve, thus, the waste of the coagulant can be avoided, and the sludge sediment obtained through the sedimentation tank can be transported away after being treated and dried by the sludge drying tank.
In the idle place of the device, all the electric devices and the drivers matched with the electric devices are arranged, and all the driving parts, which refer to the power element, the electric devices and the adaptive power supply, are connected through the conducting wires by the person skilled in the art, and specific connecting means refer to the following expressions that the electric connection is completed among the electric devices in sequence, and the detailed connecting means are well known in the art.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
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 (7)
1. A cosmetic sewage treatment system is characterized by comprising a grating system, a regulating system, a hydrolysis acidification system, a contact oxidation system, a coagulating sedimentation system and a sludge drying system;
the grid system includes a grid well of a brick-and-concrete structure;
the adjusting system comprises a sewage adjusting tank with a lift pump, and the input end of the sewage adjusting tank is communicated with the output end of the grid well;
the hydrolysis acidification system comprises a hydrolysis acidification pool for anaerobic fermentation, the input end of the lift pump is communicated with the output end of the sewage adjusting pool, and the output end of the lift pump is communicated with the hydrolysis acidification pool;
the contact oxidation system comprises a submerged biological filter with an air compressor, and the input end of the submerged biological filter is communicated with the output end of the hydrolysis acidification tank;
the coagulating sedimentation system comprises a sedimentation tank with a dosing barrel, and the input end of the sedimentation tank is communicated with the output end of the submerged biological filter;
the sludge drying system comprises a plurality of sludge drying tanks, and the input ends of the sludge drying tanks are respectively communicated with the output end of the sedimentation tank.
2. The cosmetic sewage treatment system of claim 1 wherein the grid wells have a grid spacing of eight millimeters.
3. The cosmetic effluent treatment system of claim 1 wherein the hydraulic retention time in the effluent conditioning tank is eight hours.
4. The cosmetic sewage treatment system of claim 1, wherein the anaerobic fermentation process comprises a hydrolysis process, an acidification process, an acid degradation process, and a methanation process.
5. The cosmetic sewage treatment system of claim 1 wherein the air compressor is used to aerate the submerged biological filter.
6. The cosmetic sewage treatment system of claim 1, wherein the bottom end of the dosing barrel is communicated with the sedimentation tank through a hollow pipe, and an electric valve is arranged between the dosing barrel and the hollow pipe.
7. The cosmetic sewage treatment system of claim 1 wherein a plurality of the sludge drying tanks are used to dry sludge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110309990.7A CN113072247A (en) | 2021-03-23 | 2021-03-23 | Cosmetics sewage treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110309990.7A CN113072247A (en) | 2021-03-23 | 2021-03-23 | Cosmetics sewage treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113072247A true CN113072247A (en) | 2021-07-06 |
Family
ID=76613710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110309990.7A Pending CN113072247A (en) | 2021-03-23 | 2021-03-23 | Cosmetics sewage treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113072247A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1400174A (en) * | 2002-09-06 | 2003-03-05 | 华南理工大学 | Anaerobic aerobic flocculation precipitation sewage treatment process |
| CN201915010U (en) * | 2010-12-31 | 2011-08-03 | 广东森洋环境保护工程设备有限公司 | Wastewater treatment system for cosmetic production |
| CN205188076U (en) * | 2015-11-26 | 2016-04-27 | 河南郑一生生物科技有限公司 | Effluent disposal system of cosmetics production |
| CN207646024U (en) * | 2017-12-08 | 2018-07-24 | 张峰 | A kind of controllable type processing equipment for sewage purification |
| CN208345992U (en) * | 2018-05-09 | 2019-01-08 | 秦皇岛格瑞因环境工程有限公司 | A kind of processing system of cosmetics waste water |
| CN209292178U (en) * | 2018-12-25 | 2019-08-23 | 武汉一念元环境科技有限公司 | A kind of Sewage Disposal suitable for biological industry garden the dirty water decontamination handles |
| CN110526496A (en) * | 2019-08-19 | 2019-12-03 | 广州澄然环境科技有限公司 | A kind of cosmetics sewage treatment process |
-
2021
- 2021-03-23 CN CN202110309990.7A patent/CN113072247A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1400174A (en) * | 2002-09-06 | 2003-03-05 | 华南理工大学 | Anaerobic aerobic flocculation precipitation sewage treatment process |
| CN201915010U (en) * | 2010-12-31 | 2011-08-03 | 广东森洋环境保护工程设备有限公司 | Wastewater treatment system for cosmetic production |
| CN205188076U (en) * | 2015-11-26 | 2016-04-27 | 河南郑一生生物科技有限公司 | Effluent disposal system of cosmetics production |
| CN207646024U (en) * | 2017-12-08 | 2018-07-24 | 张峰 | A kind of controllable type processing equipment for sewage purification |
| CN208345992U (en) * | 2018-05-09 | 2019-01-08 | 秦皇岛格瑞因环境工程有限公司 | A kind of processing system of cosmetics waste water |
| CN209292178U (en) * | 2018-12-25 | 2019-08-23 | 武汉一念元环境科技有限公司 | A kind of Sewage Disposal suitable for biological industry garden the dirty water decontamination handles |
| CN110526496A (en) * | 2019-08-19 | 2019-12-03 | 广州澄然环境科技有限公司 | A kind of cosmetics sewage treatment process |
Non-Patent Citations (1)
| Title |
|---|
| 《河北环境保护丛书》编委会: "新型洁净煤技术创新与实践论文集", pages: 151 - 190 * |
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