CN204529425U - A kind of heterogeneous catalytic ozonation organic wastewater with difficult degradation thereby treatment unit - Google Patents
A kind of heterogeneous catalytic ozonation organic wastewater with difficult degradation thereby treatment unit Download PDFInfo
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- CN204529425U CN204529425U CN201520217626.8U CN201520217626U CN204529425U CN 204529425 U CN204529425 U CN 204529425U CN 201520217626 U CN201520217626 U CN 201520217626U CN 204529425 U CN204529425 U CN 204529425U
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Abstract
A kind of heterogeneous catalytic ozonation organic wastewater with difficult degradation thereby treatment unit, comprise reaction tower, it is characterized in that, described reaction tower is connected with ozonizer, distribute water and air layer is provided with successively from the bottom to top in reaction tower inside, heterogeneous catalytic ozonation reaction zone, clear water zone, the described reaction tower of corresponding described distribute water and air layer region is provided with water-in, catalyst filling is filled with in inside, described heterogeneous catalytic ozonation reaction zone, water outlet and recirculated water water outlet is provided with at the sidepiece of described clear water zone, residue ozone air outlet is provided with at the top of described clear water zone, described recirculated water water outlet is connected to described water-in by pipeline.The beneficial effects of the utility model are: (1) improves the contact efficiency of ozone and pollutent, reduce the dosage of ozone; (2) removal efficiency of Recalcitrant chemicals is improved.
Description
Technical field
The utility model relates to the Novel water treatment device that a kind of ozone technology combines with heterogeneous catalytic oxidation technology, for the treatment of organic wastewater with difficult degradation thereby, belongs to water treatment field.
Background technology
Along with the fast development of China's industry, kind and the quantity discharged of trade effluent are increasing, wherein maximum with the harm of organic wastewater with difficult degradation thereby.The complicated component of organic wastewater with difficult degradation thereby, biological degradability is poor, toxicity is large, normal cyanogen, phenolic compound, polychlorobiphenyl, polycyclic aromatic hydrocarbons, nitro-aromatic, agricultural chemicals, the dyestuffs etc. of containing are to biological and that microorganism is poisonous or hypertoxic material, these materials have the effects such as carcinogenic, teratogenesis, mutagenesis, and some can long term accumulation in vivo, and by food chain transport to human body, to human body, there is toxicity and carcinogenesis, endanger huge to environment and the mankind.
Because existing routine biochemistry water technology can not remove these Persistent organic pollutants effectively, therefore, high-level oxidation technology has become the important means of administering bio-refractory toxic organic pollutants.High-level oxidation technology can produce the free radical with Strong oxdiative ability, in water, high stability, Persistent organic pollutants carry out serial radical chain reaction, thus destroy its structure, make it progressively be degraded to harmless low-molecular-weight organism, be finally degraded to CO2, H2O and other mineral salts.But current many high-level oxidation technologies are also in the experimental study stage, not yet enter large-scale industrialization application.
Ozone has higher redox potential (2.07V) due to it in water, has a wide range of applications in recent years in advanced treatment of industrial waste water.But ozone application also also exists such as in wastewater treatment: the cost incurred of ozone is high, and ozone utilization rate is lower; Ozone oxidation is limited in one's ability, and ozone and organic reaction preference are comparatively strong, and at low dosage with in the short period of time, ozone can not permineralization pollutent, and decomposes the intermediate product generated and can stop the series of problems such as the further oxidation of ozone.
Utility model content
Poor for solving the biochemical efficiency existed in current refractory wastewater process, the problems such as the oxidation capacity of simple ozone oxidation is not strong, speed of reaction is slow, reaction preference is strong, oxidation is not thorough.The utility model provides a kind of heterogeneous catalytic ozonation organic wastewater with difficult degradation thereby treatment unit.
For achieving the above object, the utility model carrys out specific implementation by the following technical programs:
A kind of heterogeneous catalytic ozonation organic wastewater with difficult degradation thereby treatment unit, comprise reaction tower, described reaction tower is connected with ozonizer, distribute water and air layer is provided with successively from the bottom to top in reaction tower inside, heterogeneous catalytic ozonation reaction zone, clear water zone, the described reaction tower of corresponding described distribute water and air layer region is provided with water-in, catalyst filling is filled with in inside, described heterogeneous catalytic ozonation reaction zone, water outlet and recirculated water water outlet is provided with at the sidepiece of described clear water zone, residue ozone air outlet is provided with at the top of described clear water zone, described recirculated water water outlet is connected to described water-in by pipeline.
After the water of described recirculated water water outlet mix with water inlet again together with enter reaction tower, what recycling effluent can increase heterogeneous catalytic ozonation district crosses Water l oad, slows down catalyst surface and pollutes, further raising ozone utilization rate and reaction efficiency.
Further, the position of described water outlet is away from the position of described recirculated water water outlet.
Further preferred, described residue ozone air outlet is connected with ozone tail gas breaking plant.
Preferably, described ozone gas enters water body by aerating apparatus, and aeration head and support adopt titanium alloy material, ensure the erosion resistance of equipment and the mass-transfer efficiency of ozone.
Preferably, below aerating apparatus, be provided with strainer head, described strainer head is arranged between water-in and aerating apparatus.
A vision slit is set between described distribute water and air floor and heterogeneous catalytic ozonation district, for observation, sampling and replacing filtrate.
Catalyst filling is the ceramic particle of supported titanium cerium, and particle diameter is 1-5mm, and the porosity of packed catalyst is 30-45%, and packed catalyst height is the 50-80% of tower body.
Reaction tower adopts Stainless steel 316 or Steel Concrete to make.Tower body is high and diameter ratio is general between 300-500%.
Use this device can reach following object: (1) improves the contact efficiency of ozone and pollutent, reduce the dosage of ozone; (2) improve the removal efficiency of Recalcitrant chemicals, when identical ozone dosage, the clearance of Recalcitrant chemicals in water is improved further, the biodegradability of waste water can be improved simultaneously; (3) ozone and catalyst action produce the hydroxyl radical free radical (OH) in a large number with strong oxidizing property, and with organic pollutants, chain reaction fast occur, oxidizing reaction non-selectivity; (4) adopt recycle pump recycling effluent, what increase heterogeneous catalytic ozonation district crosses Water l oad, improves ozone utilization rate and reaction efficiency further.
Accompanying drawing explanation
According to drawings and embodiments the utility model is described in further detail below.
Fig. 1 is structure iron of the present utility model.
Embodiment
As shown in Figure 1, a kind of heterogeneous catalytic ozonation organic wastewater with difficult degradation thereby treatment unit described in the present embodiment, its workflow is
A, ozone gas and suction culvert are oppositely filled with inlet area, ozone gas is fully mixed with water body;
B, be dissolved with the water body of ozone at reaction tower flows upward inside, and be filled with catalyst filling in the inside of reaction tower, water body oxygen while upwards flowing fully is contacted with catalyzer, there is catalytic ozonation react and produce great amount of hydroxy group free radical, the organic pollutant in hydroxyl radical free radical oxidizing water; Described catalyst filling is the ceramic particle of supported titanium cerium, and particle diameter is 1-5mm, and the porosity of packed catalyst is 30-45%, and packed catalyst height is the 50-80% of tower body;
C, are clear water zones on the top of catalyst filling 7, are provided with residue ozone air outlet on the top of clear water zone, be provided with at the sidepiece of clear water zone the water-in that water body to be circulated to bottom by recirculated water water outlet again;
D, be provided with water outlet 9 derived by clear water at the sidepiece of clear water zone, and the position of water outlet 9 is higher than the position of described recirculated water water outlet 10.
Further preferred, the position of described water outlet 9 is away from the position of described recirculated water water outlet 10.
Further preferred, described residue ozone air outlet 12 is connected with ozone tail gas breaking plant 13.
Preferably, described ozone gas enters water body by aerating apparatus 5.
Preferably, be provided with strainer head 11 below aerating apparatus, described strainer head 11 is arranged between water-in 8 and aerating apparatus 5.
A kind of heterogeneous catalytic ozonation organic wastewater with difficult degradation thereby treatment unit, comprise reaction tower, described reaction tower is connected with ozonizer 6, distribute water and air layer 1 is provided with successively from the bottom to top in reaction tower inside, heterogeneous catalytic ozonation reaction zone 2, clear water zone 3, the described reaction tower in corresponding described distribute water and air layer 1 region is provided with water-in 8, catalyst filling 7 is filled with in inside, described heterogeneous catalytic ozonation reaction zone 2, water outlet 9 and recirculated water water outlet 10 is provided with at the sidepiece of described clear water zone 3, residue ozone air outlet is provided with at the top of described clear water zone, described recirculated water water outlet is connected to described water-in by pipeline.
Water through described recirculated water water outlet sends into water-in 8 by water circulating pump 4, with water inlet mix after again together with enter reaction tower, recycling effluent can increase the Water l oad excessively in heterogeneous catalytic ozonation district, slows down catalyst surface and pollutes, improve ozone utilization rate and reaction efficiency further.
Further, the position of described water outlet 9 is away from the position of described recirculated water water outlet 10.
Further preferred, described residue ozone air outlet 12 is connected with ozone tail gas breaking plant 13.
Preferably, described ozone gas enters water body by aerating apparatus, and aeration head and support adopt titanium alloy material, ensure the erosion resistance of equipment and the mass-transfer efficiency of ozone.
Preferably, below aerating apparatus, be provided with strainer head, described strainer head is arranged between water-in and aerating apparatus.
A vision slit is set between described distribute water and air floor and heterogeneous catalytic ozonation district, for observation, sampling and replacing filtrate.
Catalyst filling is the ceramic particle of supported titanium cerium, and particle diameter is 1-5mm, and the porosity of packed catalyst is 30-45%.
Pending waste water enters the distribute water and air layer 1 of heterogeneous device for catalyzing and oxidating ozone bottom from water-in 8, enter heterogeneous catalytic ozonation reaction zone 2 by strainer head 11, the ozone that ozonizer 6 the produces aerating apparatus 5 passed through in distribute water and air layer 1 contacts with water inlet and mixes; Heterogeneous catalytic ozonation reaction zone 2 is entered with the mixed waste water of ozone, because this district is filled with catalyst filling 7, the space of wastewater streams between filler, ozone in water and catalyzer generation catalytic oxidation, produce the hydroxyl radical free radical in a large number with strong oxidizing property, difficult degradation in water, macromole organic pollutant are decomposed into small-molecule substance that is nontoxic, low toxicity by hydroxyl radical free radical, and some pollutent is directly oxidized is decomposed into CO2 and H2O.Due to the effect of catalyzer, the generation of hydroxyl radical free radical significantly improves, and significantly strengthens the oxidation effectiveness of organic pollutant, improves utilization ratio and the oxidation capacity of ozone.Continue upwards to enter clear water zone 3 through the reacted waste water of heterogeneous catalytic ozonation.Clear water zone 3 processes rear water outlet and enters subsequent processing units via water outlet 9.Part water outlet is back to suction culvert bottom reaction unit from recirculated water water outlet 10 via water circulating pump 4, reaction unit is reentered after mixing with water inlet, recycling effluent can increase the Water l oad excessively in heterogeneous catalytic ozonation district 2, effectively slow down catalyst surface to pollute simultaneously, improve ozone utilization rate and reaction efficiency further.Some not reacted residue ozone, enters ozone tail gas breaking plant 13 via ozone outlet 12.
The beneficial effects of the utility model are: use the method and device can reach following object: 1 contact efficiency improving ozone and pollutent, the dosage of minimizing ozone; The removal efficiency of 2 raising Recalcitrant chemicals, when identical ozone dosage, improves further the clearance of Recalcitrant chemicals in water, can improve the biodegradability of waste water simultaneously; 3 ozone and catalyst action produce the hydroxyl radical free radical (OH) in a large number with strong oxidizing property, and with organic pollutants, chain reaction fast occur, oxidizing reaction non-selectivity; 4 adopt recycle pump recycling effluent, and what increase heterogeneous catalytic ozonation district crosses Water l oad, improves ozone utilization rate and reaction efficiency further.
Claims (10)
1. a heterogeneous catalytic ozonation organic wastewater with difficult degradation thereby treatment unit, comprise reaction tower, it is characterized in that, described reaction tower is connected with ozonizer, distribute water and air layer is provided with successively from the bottom to top in reaction tower inside, heterogeneous catalytic ozonation reaction zone, clear water zone, the described reaction tower of corresponding described distribute water and air layer region is provided with water-in, catalyst filling is filled with in inside, described heterogeneous catalytic ozonation reaction zone, catalyst filling is the ceramic particle of supported titanium cerium, particle diameter is 1-5mm, the porosity of packed catalyst is 30-45%, packed catalyst height is the 50-80% of tower body, be provided with water outlet and recirculated water water outlet at the sidepiece of described clear water zone, be provided with residue ozone air outlet at the top of described clear water zone, described recirculated water water outlet is connected to described water-in by pipeline.
2. device as claimed in claim 1, is characterized in that, the position of described water outlet is away from the position of described recirculated water water outlet.
3. device as claimed in claim 1, it is characterized in that, described residue ozone air outlet is connected with ozone tail gas breaking plant.
4. device as claimed in claim 1, it is characterized in that, described ozone gas enters water body by aerating apparatus, and aeration head and support adopt titanium alloy material, ensure the erosion resistance of equipment and the mass-transfer efficiency of ozone.
5. device as claimed in claim 4, it is characterized in that, below aerating apparatus, be provided with strainer head, described strainer head is arranged between water-in and aerating apparatus.
6. the device as described in as arbitrary in claim 1-5, is characterized in that, aeration head and support adopt titanium alloy material.
7. the device as described in as arbitrary in claim 1-5, is characterized in that, arrange a vision slit between described distribute water and air floor and heterogeneous catalytic ozonation district.
8. the device as described in as arbitrary in claim 1-5, it is characterized in that, catalyst filling is the ceramic particle of supported titanium cerium, and particle diameter is 1-5mm, and the porosity of packed catalyst is 30-45%, and packed catalyst height is the 50-80% of tower body.
9. the device as described in as arbitrary in claim 1-5, is characterized in that, reaction tower adopts Stainless steel 316 or Steel Concrete to make.
10. device as claimed in claim 9, is characterized in that, the high and diameter of tower body is than between 300-500%.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106006925A (en) * | 2016-06-23 | 2016-10-12 | 北京中环嘉诚环境工程有限公司 | Catalytic ozonization system and application thereof in catalytic ozonation of hardly-degradable organic wastewater |
| CN107032521A (en) * | 2017-04-25 | 2017-08-11 | 大连广泰源环保科技有限公司 | Advanced treatment system and method after a kind of percolate evaporation gas washing |
| CN108658393A (en) * | 2018-06-15 | 2018-10-16 | 无锡容大环境科技有限公司 | The system and its processing method of ozone oxidation-BAC filterings-composite catalytic oxidation advanced treatment on coking wastewater |
| CN109912008A (en) * | 2019-03-05 | 2019-06-21 | 博天环境集团股份有限公司 | A kind of suspension bed catalytic ozonation reactor and its application |
-
2015
- 2015-04-10 CN CN201520217626.8U patent/CN204529425U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106006925A (en) * | 2016-06-23 | 2016-10-12 | 北京中环嘉诚环境工程有限公司 | Catalytic ozonization system and application thereof in catalytic ozonation of hardly-degradable organic wastewater |
| CN107032521A (en) * | 2017-04-25 | 2017-08-11 | 大连广泰源环保科技有限公司 | Advanced treatment system and method after a kind of percolate evaporation gas washing |
| CN108658393A (en) * | 2018-06-15 | 2018-10-16 | 无锡容大环境科技有限公司 | The system and its processing method of ozone oxidation-BAC filterings-composite catalytic oxidation advanced treatment on coking wastewater |
| CN109912008A (en) * | 2019-03-05 | 2019-06-21 | 博天环境集团股份有限公司 | A kind of suspension bed catalytic ozonation reactor and its application |
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Granted publication date: 20150805 Termination date: 20180410 |
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