CN112010419A - Treatment method and system for removing total organic carbon and Kjeldahl nitrogen in cold rolling reverse osmosis concentrated water - Google Patents
Treatment method and system for removing total organic carbon and Kjeldahl nitrogen in cold rolling reverse osmosis concentrated water Download PDFInfo
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Abstract
The invention belongs to the technical field of water treatment, and particularly relates to a treatment method and a system for removing total organic carbon and Kjeldahl nitrogen in cold-rolling reverse osmosis concentrated water, wherein the method comprises the following steps: cold rolling reverse osmosis concentrated water enters a high-efficiency oxidation adsorption reactor, ozone generated by an ozone generator enters the high-efficiency oxidizer from the bottom of the high-efficiency oxidizer through a pipeline, and the cold rolling reverse osmosis concentrated water and the ozone flow from the bottom to the top and belong to the same-direction flow; in the reaction process, final ozone is discharged from the air outlet; and the cold rolling reverse osmosis concentrated water is discharged from a water outlet of the high-efficiency oxidation adsorption reactor. After the whole process treatment, the pH of the cold rolling reverse osmosis concentrated water is 6.9-8.2, the TDS is 6780-9130 mg/L, the total organic carbon is 3-6 mg/L, and the Kjeldahl nitrogen is 0.3-1.7 mg/L.
Description
Technical Field
The invention belongs to the technical field of water treatment, and particularly relates to a treatment method and a treatment system for removing total organic carbon and Kjeldahl nitrogen in cold-rolling reverse osmosis concentrated water
Background
The unit water consumption of the steel enterprises in China is still higher than the level of the advanced steel enterprises in China, so that the new water consumption per ton of steel of the steel enterprises is reduced, the water recycling rate of the steel enterprises is improved, and the comprehensive treatment and recycling of the wastewater of the steel enterprises are enhanced, which is one of the keys for realizing the sustainable development of the steel enterprises in China.
Iron and steel enterprises can generate a large amount of discharged wastewater in the process of cold rolling wastewater, and the wastewater is mainly recycled by adopting a reverse osmosis process at present. The water yield of the reverse osmosis process is 60-80%, and 20-40% reverse osmosis concentrated water is also produced. Water quality analysis shows that the cold rolling reverse osmosis concentrated water is typical industrial wastewater with high total organic carbon and Kjeldahl nitrogen.
However, no treatment method and process for simultaneously removing total organic carbon and Kjeldahl nitrogen in cold rolling reverse osmosis concentrated water exist so far. The invention aims to develop an economic and efficient pollutant treatment process according to the water quality and quantity condition of cold rolling reverse osmosis concentrated water, takes the cyclic utilization, energy conservation and emission reduction as main tasks, reduces environmental pollution, and actively deals with increasingly strict environmental protection regulations.
Disclosure of Invention
The invention provides a treatment method and a treatment system for removing total organic carbon and Kjeldahl nitrogen in cold rolling reverse osmosis concentrated water, provides a complete technical scheme for removing the total organic carbon and the Kjeldahl nitrogen in the cold rolling reverse osmosis concentrated water for the first time, and belongs to an environment-friendly steel production process system.
In order to realize the purpose of the invention, the technical scheme adopted by the invention is as follows:
a treatment method for removing total organic carbon and Kjeldahl nitrogen in cold rolling reverse osmosis concentrated water comprises the following steps:
the water quality pH of the cold rolling reverse osmosis concentrated water is 6.7-8.1, the TDS is 6720-8950 mg/L, the total organic carbon is 21-43 mg/L, and the Kjeldahl nitrogen is 12-27 mg/L;
the cold-rolled reverse osmosis concentrated water enters a high-efficiency oxidation adsorption reactor, ozone generated by an ozone generator enters the high-efficiency oxidizer from the bottom of the high-efficiency oxidizer through a pipeline, and the cold-rolled reverse osmosis concentrated water and the ozone flow from the bottom to the top and belong to the same-direction flow; an air source of the ozone generator is oxygen, the concentration of the ozone is 15-26 mg/L, the air inlet pressure is 0.2-1.0Mpa, and the final ozone is discharged from an air outlet in the reaction process;
the high-efficiency oxidation adsorption reactor is internally provided with a load type binary carbon-based catalyst, and the high-efficiency oxidation adsorption reactor is prepared by the following steps: 1) screening and washing of the carrier: selecting activated carbon fiber with the radius of 2.3-3.9 mm and the specific surface area of 790.2-887.6 m2(vi)/g, Vpore is 0.45-0.51 cm3Cleaning the activated carbon fiber with clear water, drying and cooling for later use; 2) preparing a mixed solution: 0.5-1.6 mol/L ammonium molybdate solution and 4.2-7.9 mol/L ferric sulfate solution according to the volume ratio of 1: 4-7, and mixing for 10-20 min by ultrasonic oscillation to form a mixed solution; 3) soaking the carrier: mixing activated carbon fibers according to a solid-liquid ratio of 1: 3-7, soaking in the prepared mixed solution for 580-800 min, then taking out the activated carbon fiber carrier, and airing at room temperature; 4) and (3) high-temperature sintering: placing the activated carbon fiber carrier in a heating furnace at the temperature of 78-82 ℃ for constant temperature for 1.9-2.2 hours, heating to 380-;
and the cold rolling reverse osmosis concentrated water is discharged from a water outlet of the high-efficiency oxidation adsorption reactor.
Furthermore, the residence time of the cold rolling reverse osmosis concentrated water in the high-efficiency oxidation adsorption reactor is 18-26 min.
Furthermore, the load type ternary carbon-based catalyst accounts for 80-85% of the effective volume of the reaction tower.
Furthermore, the specific surface area of the activated carbon fiber loaded binary catalyst is 856.3-1035.7 m2Vpore of 0.48-0.57 cm/g3/g。
According to the treatment method for removing the total organic carbon and the Kjeldahl nitrogen in the cold-rolled reverse osmosis concentrated water, after the whole process treatment, the pH value of the cold-rolled reverse osmosis concentrated water is 6.9-8.2, the TDS is 6780-9130 mg/L, the total organic carbon is 3-6 mg/L, and the Kjeldahl nitrogen is 0.3-1.7 mg/L.
Further, in the preparation step 1) of the supported binary carbon-based catalyst, the activated carbon fiber is cleaned by clear water for 3-4 times, then dried in a 105-108 ℃ forced air drying oven for 2.0-2.2 hours, and cooled for later use.
The invention also provides a treatment system for removing total organic carbon and Kjeldahl nitrogen in the cold-rolling reverse osmosis concentrated water, which comprises a lift pump 1, wherein the lift pump 1 is connected with a high-efficiency oxidation adsorption reactor 3 through a pipeline, the lower part and the upper part of the high-efficiency oxidation adsorption reactor 3 are respectively provided with a water inlet 2 and a water outlet 8, and the lower end and the upper end of the high-efficiency oxidation adsorption reactor 3 are respectively provided with an ozone inlet 5 and an ozone outlet 7; an active carbon fiber loaded binary catalyst 6 is placed in the high-efficiency oxidation adsorption reactor 3, an ozone generator 4 is arranged below the high-efficiency oxidation adsorption reactor 3, and the ozone generator 4 is connected with an ozone inlet 5 through a pipeline.
Detailed description of the invention:
a process system for removing total organic carbon and Kjeldahl nitrogen in reverse osmosis concentrated water comprises a lift pump, a water inlet, a high-efficiency oxidation adsorption reactor, an ozone generator, an ozone inlet, an activated carbon fiber loaded binary catalyst, a water outlet and a gas outlet.
The cold rolling reverse osmosis concentrated water has the water quality pH of 6.7-8.1, the TDS of 6720-8950 mg/L, the total organic carbon of 21-43 mg/L and the Kjeldahl nitrogen of 12-27 mg/L.
And the cold-rolled reverse osmosis concentrated water enters the efficient oxidation adsorption reactor from a water inlet of the efficient oxidation adsorption reactor through a lift pump. Ozone generated by the ozone generator enters the efficient oxidizer from the bottom of the efficient oxidizer through a pipeline, and cold-rolled reverse osmosis concentrated water and the ozone flow from the bottom to the top and belong to cocurrent flow. The ozone generator has an air source of oxygen, the concentration of ozone is 15-26 mg/L, the air inlet pressure is 0.5Mpa, and the retention time in the high-efficiency oxidation adsorption reactor is 18-26 min. During the reaction process, the final ozone is discharged from the air outlet.
A supported binary carbon-based catalyst is placed in the high-efficiency oxidation adsorption reactor, and the supported ternary carbon-based catalyst accounts for 80-85% of the effective volume of the reaction tower.
The activated carbon fiber loaded binary catalyst is developed aiming at the characteristics of the cold-rolled reverse osmosis concentrated water, and can efficiently remove the total organic carbon and the Kjeldahl nitrogen in the cold-rolled reverse osmosis concentrated water. Preparing an activated carbon fiber loaded binary catalyst: 1) screening and washing of the carrier: selecting activated carbon fiber with the radius of 2.3-3.9 mm and the specific surface area of 790.2-887.6 m2(vi)/g, Vpore is 0.45-0.51 cm3And/g, cleaning the activated carbon fiber with clear water for 3-4 times, then drying the activated carbon fiber in a 105 ℃ blast drying oven for 2 hours, and cooling the activated carbon fiber for later use. 2) Preparing a mixed solution: 0.5-1.6 mol/L ammonium molybdate solution and 4.2-7.9 mol/L ferric sulfate solution according to the volume ratio of 1: 4-7, and mixing for 10-20 min by ultrasonic oscillation to form a mixed solution. 3) Soaking the carrier: mixing activated carbon fibers according to a solid-liquid ratio of 1: 3-7, soaking in the prepared mixed solution for 580-800 min, then taking out the activated carbon fiber carrier, and airing at room temperature. 4) And (3) high-temperature sintering: placing the activated carbon fiber carrier in a heating furnace at the temperature of 80 ℃ for 2 hours at constant temperature, raising the temperature to 380 ℃ at the speed of 5 ℃/min, roasting at constant temperature for 3 hours, and naturally cooling to obtain the activated carbon fiber loaded binary catalyst. The specific surface area of the activated carbon fiber loaded binary catalyst is 856.3-1035.7 m2Vpore of 0.48-0.57 cm/g3Per g, further increase adsorptionTotal organic carbon and kjeldahl nitrogen. In addition, after the surface of the activated carbon fiber is loaded with two heavy metals of iron and molybdenum, the activated carbon fiber is combined with ozone to generate a large amount of hydroxyl radicals, and total organic carbon and Kjeldahl nitrogen in the reverse osmosis concentrated water can be oxidized to be converted into carbon dioxide and water. The activated carbon fiber loaded binary catalyst has both adsorption capacity and oxidation capacity, and can efficiently remove total organic carbon and Kjeldahl nitrogen in reverse osmosis concentrated water in a short time.
And the cold rolling reverse osmosis concentrated water is discharged from a water outlet of the high-efficiency oxidation adsorption reactor.
The beneficial technical effects are as follows:
the invention provides a treatment method and a treatment system for removing total organic carbon and Kjeldahl nitrogen in cold-rolled reverse osmosis concentrated water, solves the problem that the cold-rolled reverse osmosis concentrated water pollutes the environment by being discharged, belongs to an environment-friendly steel production process, and has good social benefit and environmental benefit. After the whole process treatment, the pH of the cold rolling reverse osmosis concentrated water is 6.9-8.2, the TDS is 6780-9130 mg/L, the total organic carbon is 3-6 mg/L, and the Kjeldahl nitrogen is 0.3-1.7 mg/L.
Drawings
FIG. 1 is a treatment system for removing total organic carbon and Kjeldahl nitrogen in cold rolling reverse osmosis concentrated water,
comprises a lift pump-1, a water inlet-2, a high-efficiency oxidation adsorption reactor-3, an ozone generator-4, an ozone inlet-5, an activated carbon fiber loaded binary catalyst-6, an air outlet-7 and a water outlet-8.
Detailed Description
The present invention is further illustrated below with reference to examples, which are understood by those skilled in the art to be illustrative only and not to constitute any limitation to the present invention.
Example 1:
a process system for removing total organic carbon and Kjeldahl nitrogen in reverse osmosis concentrated water comprises a lift pump, a water inlet, a high-efficiency oxidation adsorption reactor, an ozone generator, an ozone inlet, an activated carbon fiber loaded binary catalyst, a water outlet and a gas outlet.
The cold rolling reverse osmosis concentrated water has the water quality pH of 6.9, the TDS of 7130mg/L, the total organic carbon of 22mg/L and the Kjeldahl nitrogen of 14 mg/L.
And the cold-rolled reverse osmosis concentrated water enters the efficient oxidation adsorption reactor from a water inlet of the efficient oxidation adsorption reactor through a lift pump. Ozone generated by the ozone generator enters the efficient oxidizer from the bottom of the efficient oxidizer through a pipeline, and cold-rolled reverse osmosis concentrated water and the ozone flow from the bottom to the top and belong to cocurrent flow. The air source of the ozone generator is oxygen, the concentration of ozone is 17mg/L, the air inlet pressure is 0.5Mpa, and the retention time in the high-efficiency oxidation adsorption reactor is 20 min. During the reaction process, the final ozone is discharged from the air outlet.
A supported binary carbon-based catalyst is placed in the high-efficiency oxidation adsorption reactor, and the supported ternary carbon-based catalyst accounts for 80% of the effective volume of the reaction tower.
The activated carbon fiber loaded binary catalyst is developed aiming at the characteristics of the cold-rolled reverse osmosis concentrated water, and can efficiently remove the total organic carbon and the Kjeldahl nitrogen in the cold-rolled reverse osmosis concentrated water. Preparing an activated carbon fiber loaded binary catalyst: 1) screening and washing of the carrier: selecting activated carbon fiber with the radius of 2.3mm and the specific surface area of 799.2m2Vpore of 0.46 cm/g3And/g, washing the activated carbon fiber for 3 times by using clear water, then drying the activated carbon fiber for 2 hours in a 105 ℃ blast drying oven, and cooling the activated carbon fiber for later use. 2) Preparing a mixed solution: 0.8mol/L ammonium molybdate solution and 4.5mol/L ferric sulfate solution according to the volume ratio of 1: 4, mixing, and ultrasonically shaking and mixing for 10min to form a mixed solution. 3) Soaking the carrier: mixing activated carbon fibers according to a solid-liquid ratio of 1: 3 soaking in the prepared mixed solution for 590min, then taking out the activated carbon fiber carrier, and airing at room temperature. 4) And (3) high-temperature sintering: placing the activated carbon fiber carrier in a heating furnace at the temperature of 80 ℃ for 2 hours at constant temperature, raising the temperature to 380 ℃ at the speed of 5 ℃/min, roasting at constant temperature for 3 hours, and naturally cooling to obtain the activated carbon fiber loaded binary catalyst. The specific surface area of the activated carbon fiber loaded binary catalyst is 923.1m2Vpore of 0.50 cm/g3/g。
And the cold rolling reverse osmosis concentrated water is discharged from a water outlet of the high-efficiency oxidation adsorption reactor.
After the whole process treatment, the pH of the cold-rolled reverse osmosis concentrated water is 7.0, the TDS is 7210mg/L, the total organic carbon is 3mg/L, and the Kjeldahl nitrogen is 0.4 mg/L.
Example 2:
a process system for removing total organic carbon and Kjeldahl nitrogen in reverse osmosis concentrated water comprises a lift pump, a water inlet, a high-efficiency oxidation adsorption reactor, an ozone generator, an ozone inlet, an activated carbon fiber loaded binary catalyst, a water outlet and a gas outlet.
The cold rolling reverse osmosis concentrated water has the water quality pH of 8.0, the TDS of 8690mg/L, the total organic carbon of 41mg/L and the Kjeldahl nitrogen of 25 mg/L.
And the cold-rolled reverse osmosis concentrated water enters the efficient oxidation adsorption reactor from a water inlet of the efficient oxidation adsorption reactor through a lift pump. Ozone generated by the ozone generator enters the efficient oxidizer from the bottom of the efficient oxidizer through a pipeline, and cold-rolled reverse osmosis concentrated water and the ozone flow from the bottom to the top and belong to cocurrent flow. The air source of the ozone generator is oxygen, the concentration of ozone is 23mg/L, the air inlet pressure is 0.5Mpa, and the retention time in the high-efficiency oxidation adsorption reactor is 25 min. During the reaction process, the final ozone is discharged from the air outlet.
A supported binary carbon-based catalyst is placed in the high-efficiency oxidation adsorption reactor, and the supported ternary carbon-based catalyst accounts for 85% of the effective volume of the reaction tower.
The activated carbon fiber loaded binary catalyst is developed aiming at the characteristics of the cold-rolled reverse osmosis concentrated water, and can efficiently remove the total organic carbon and the Kjeldahl nitrogen in the cold-rolled reverse osmosis concentrated water. Preparing an activated carbon fiber loaded binary catalyst: 1) screening and washing of the carrier: selecting activated carbon fibers with the radius of 3.8mm and the specific surface area of 790.2-887.6 m2Vpore of 0.50 cm/g3And/g, washing the activated carbon fiber with clear water for 4 times, drying in a 105 ℃ forced air drying oven for 2 hours, and cooling for later use. 2) Preparing a mixed solution: 1.5mol/L ammonium molybdate solution and 7.2mol/L ferric sulfate solution according to the volume ratio of 1: 7, mixing, and ultrasonically shaking and mixing for 18min to form a mixed solution. 3) Soaking the carrier: mixing activated carbon fibers according to a solid-liquid ratio of 1: 6 soaking in the prepared mixed solution for 790min, taking out the activated carbon fiber carrier, and standing at room temperatureAnd (5) drying in the air. 4) And (3) high-temperature sintering: placing the activated carbon fiber carrier in a heating furnace at the temperature of 80 ℃ for 2 hours at constant temperature, raising the temperature to 380 ℃ at the speed of 5 ℃/min, roasting at constant temperature for 3 hours, and naturally cooling to obtain the activated carbon fiber loaded binary catalyst. The specific surface area of the activated carbon fiber loaded binary catalyst is 1011.4m2Vpore of 0.55 cm/g3/g。
And the cold rolling reverse osmosis concentrated water is discharged from a water outlet of the high-efficiency oxidation adsorption reactor.
After the whole process treatment, the pH value of the cold rolling reverse osmosis concentrated water is 8.1, the TDS is 8800mg/L, the total organic carbon is 5mg/L, and the Kjeldahl nitrogen is 1.1 mg/L.
In conclusion, the invention firstly provides a technical scheme for completely removing the total organic carbon and the Kjeldahl nitrogen in the cold rolling reverse osmosis concentrated water, and the problem of environmental pollution caused by cold rolling waste water is solved systematically, so the invention belongs to an environment-friendly steel production process system. .
Of course, those skilled in the art should recognize that the above-described embodiments are illustrative only, and not limiting, and that changes and modifications can be made within the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. A treatment method for removing total organic carbon and Kjeldahl nitrogen in cold rolling reverse osmosis concentrated water is characterized by comprising the following steps:
the water quality pH of the cold rolling reverse osmosis concentrated water is 6.7-8.1, the TDS is 6720-8950 mg/L, the total organic carbon is 21-43 mg/L, and the Kjeldahl nitrogen is 12-27 mg/L;
the cold-rolled reverse osmosis concentrated water enters a high-efficiency oxidation adsorption reactor, ozone generated by an ozone generator enters the high-efficiency oxidizer from the bottom of the high-efficiency oxidizer through a pipeline, and the cold-rolled reverse osmosis concentrated water and the ozone flow from the bottom to the top and belong to the same-direction flow; an air source of the ozone generator is oxygen, the concentration of the ozone is 15-26 mg/L, the air inlet pressure is 0.2-1.0Mpa, and the final ozone is discharged from an air outlet in the reaction process;
the high-efficiency oxidation adsorptionThe reactor is internally provided with a load type binary carbon-based catalyst which is prepared by the following steps: 1) screening and washing of the carrier: selecting activated carbon fiber with the radius of 2.3-3.9 mm and the specific surface area of 790.2-887.6 m2(vi)/g, Vpore is 0.45-0.51 cm3Cleaning the activated carbon fiber with clear water, drying and cooling for later use; 2) preparing a mixed solution: 0.5-1.6 mol/L ammonium molybdate solution and 4.2-7.9 mol/L ferric sulfate solution according to the volume ratio of 1: 4-7, and mixing for 10-20 min by ultrasonic oscillation to form a mixed solution; 3) soaking the carrier: mixing activated carbon fibers according to a solid-liquid ratio of 1: 3-7, soaking in the prepared mixed solution for 580-800 min, then taking out the activated carbon fiber carrier, and airing at room temperature; 4) and (3) high-temperature sintering: placing the activated carbon fiber carrier in a heating furnace at the temperature of 78-82 ℃ for constant temperature for 1.9-2.2 hours, heating to 380-;
and the cold rolling reverse osmosis concentrated water is discharged from a water outlet of the high-efficiency oxidation adsorption reactor.
2. The treatment method for removing total organic carbon and Kjeldahl nitrogen in cold-rolled reverse osmosis concentrated water according to claim 1, wherein the residence time of the cold-rolled reverse osmosis concentrated water in the high-efficiency oxidation adsorption reactor is 18-26 min.
3. The treatment method for removing total organic carbon and Kjeldahl nitrogen in cold-rolling reverse osmosis concentrated water according to claim 1, characterized in that the supported ternary carbon-based catalyst accounts for 80-85% of the effective volume of the reaction tower.
4. The treatment method for removing total organic carbon and Kjeldahl nitrogen in cold-rolled reverse osmosis concentrated water as claimed in claim 1, wherein the specific surface area of the activated carbon fiber supported binary catalyst is 856.3-1035.7 m2Vpore of 0.48-0.57 cm/g3/g。
5. The treatment method for removing total organic carbon and Kjeldahl nitrogen in cold-rolled reverse osmosis concentrated water according to claim 1, wherein after the whole process treatment, the cold-rolled reverse osmosis concentrated water has pH of 6.9-8.2, TDS of 6780-9130 mg/L, total organic carbon of 3-6 mg/L and Kjeldahl nitrogen of 0.3-1.7 mg/L.
6. The treatment method for removing total organic carbon and Kjeldahl nitrogen in cold rolling reverse osmosis concentrated water as claimed in claim 1, wherein in the preparation step 1) of the supported binary carbon-based catalyst, the activated carbon fiber is cleaned with clear water for 3-4 times, and then dried in a 105-108 ℃ forced air drying oven for 2.0-2.2 hours, and then cooled for later use.
7. A treatment system for removing total organic carbon and Kjeldahl nitrogen in cold rolling reverse osmosis concentrated water, which is applied to the method of any one of claims 1 to 6, is characterized by comprising a lift pump (1), wherein the lift pump (1) is connected with a high-efficiency oxidation adsorption reactor (3) through a pipeline, the lower part and the upper part of the high-efficiency oxidation adsorption reactor (3) are respectively provided with a water inlet (2) and a water outlet (8), and the lower end and the upper end of the high-efficiency oxidation adsorption reactor (3) are respectively provided with an ozone inlet (5) and an ozone outlet (7); an activated carbon fiber loaded binary catalyst (6) is placed in the efficient oxidation adsorption reactor (3), an ozone generator (4) is arranged below the efficient oxidation adsorption reactor (3), and the ozone generator (4) is connected with an ozone inlet (5) through a pipeline.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104418423A (en) * | 2013-08-23 | 2015-03-18 | 中国石油天然气股份有限公司 | Method for treating reverse osmosis concentrated water by catalytic ozonation |
| CN106256426A (en) * | 2015-06-18 | 2016-12-28 | 中国石油化工股份有限公司 | A kind of catalyst for O3 catalytic oxidation and preparation method thereof |
| CN107138168A (en) * | 2017-06-19 | 2017-09-08 | 浙江奇彩环境科技股份有限公司 | Ozone catalyst for high concentration organic nitrogen wastewater treatment |
| CN108314151A (en) * | 2017-01-17 | 2018-07-24 | 宝山钢铁股份有限公司 | The method and apparatus of total nitrogen and total organic carbon in a kind of removal rolling effluent |
| KR101967179B1 (en) * | 2018-04-30 | 2019-04-09 | (주)이앤씨 | Membrane separation water treatment system with reverse osmosis membrane concentrated water treatment facility |
-
2019
- 2019-05-28 CN CN201910453353.XA patent/CN112010419A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104418423A (en) * | 2013-08-23 | 2015-03-18 | 中国石油天然气股份有限公司 | Method for treating reverse osmosis concentrated water by catalytic ozonation |
| CN106256426A (en) * | 2015-06-18 | 2016-12-28 | 中国石油化工股份有限公司 | A kind of catalyst for O3 catalytic oxidation and preparation method thereof |
| CN108314151A (en) * | 2017-01-17 | 2018-07-24 | 宝山钢铁股份有限公司 | The method and apparatus of total nitrogen and total organic carbon in a kind of removal rolling effluent |
| CN107138168A (en) * | 2017-06-19 | 2017-09-08 | 浙江奇彩环境科技股份有限公司 | Ozone catalyst for high concentration organic nitrogen wastewater treatment |
| KR101967179B1 (en) * | 2018-04-30 | 2019-04-09 | (주)이앤씨 | Membrane separation water treatment system with reverse osmosis membrane concentrated water treatment facility |
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