CN214088059U - High salt waste water removes processing system of organic matter - Google Patents
High salt waste water removes processing system of organic matter Download PDFInfo
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- CN214088059U CN214088059U CN202023272580.XU CN202023272580U CN214088059U CN 214088059 U CN214088059 U CN 214088059U CN 202023272580 U CN202023272580 U CN 202023272580U CN 214088059 U CN214088059 U CN 214088059U
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Abstract
The utility model provides a processing system that high salt waste water removed organic matter, including at least one upper portion that connects gradually intake and the heterogeneous ozone oxidation tower of one-level of lower part play water, at least one lower part intakes and the heterogeneous ozone oxidation tower of second grade of upper portion play water, and two at least photocatalytic oxidation chemical industry sections, set up into water uniform distributor in the heterogeneous ozone oxidation tower of one-level, a plurality of stainless steel ripple packing layers and ozone uniform distributor, set up the catalyst layer that contains alloys such as nickel-chromium titanium in the heterogeneous ozone oxidation tower of second grade, set up ozone uniform distributor and a plurality of luminous wavelength adjustable photoelectric tube in the photocatalytic oxidation chemical industry section, the external ozone generating device of each ozone uniform distributor, each heterogeneous ozone oxidation tower and photocatalytic oxidation chemical industry section still are connected with tail gas processing apparatus. The system has low consumption cost, does not need to add chemical agents regularly, does not generate solid hazardous waste, has good effect of removing organic matters in the wastewater, and also solves the problems of potential safety hazards of high temperature and high pressure and incomplete oxidation of the organic matters.
Description
Technical Field
The utility model relates to a waste water treatment technical field especially relates to a processing system that high salt waste water removed organic matter.
Background
In the daily life and production of people, a large amount of organic compounds are used, most of the organic compounds are synthesized artificially, a salt forming reaction is involved in a chemical organic synthesis process, a target product is obtained, a large amount of waste water is inevitably discharged, and the destructive influence of water-soluble organic waste water on the environment is very large.
For wastewater with total salt content exceeding 1% mass fraction of water, the wastewater is generally called high-salinity wastewater in the industry, and is generally from chemical plants, collection and processing of petroleum and natural gas, and the like. According to different production processes, the variety and chemical properties of organic matters contained in the high-salinity wastewater are greatly different, the generation ways of the saline wastewater are wide, and the wastewater discharge amount is increased year by year.
The existing process for treating organic matters in high-salinity wastewater comprises a Fenton method, a micro-electrolysis method, an ozone oxidation method, a wet oxidation method and the like, and the process has the following characteristics:
1. the Fenton method: the method needs to adjust the pH value of the water body back to acidity by adding acid, then adds medicaments such as hydrogen peroxide and ferrous sulfate to precipitate organic matters dissolved in the water, generates a large amount of hazardous waste solids after treatment, also has influence on the environment, and has incomplete oxidative decomposition on the organic matters.
2. And (3) micro-electrolysis: the method is based on the electrochemical principle, two conductors with different electronegativities are directly connected together and immersed in electrolyte liquid with conductivity to form a primary battery, charged ions in the solution move to an electrode with opposite charges to react by utilizing the electric field effect around the conductors, and simultaneously, products generated by the electric reaction and chemical substances in the solution are chemically changed, so that the aim of removing chemical pollutants is fulfilled. The method has long reaction time, the added filler needs to be replaced and treated at intervals, the pH value of the water body also needs to be adjusted to be acidic, and a large amount of hazardous waste solids are generated; in addition, micro-electrolysis belongs to reduction reaction, has no oxidation effect on organic matters, and can only be used as an early pretreatment step of oxidation reaction.
3. An ozone oxidation method: the method is a method for purifying and disinfecting waste water by using ozone as an oxidant. Compared with the former two, the method has better treatment effect and environment-friendly aspect, but the single ozone oxidation decomposition has stronger pertinence, partial unsaturated bond organic matters such as aliphatic hydrocarbon can be cracked and broken to be oxidized, and the treatment effect of the saturated bond organic matters and other types of organic matters is poorer.
4. Wet oxidation method: the method is a method for carrying out high-temperature high-pressure oxidation treatment on organic matters suspended or dissolved in liquid in the presence of liquid-phase water, wherein the oxidation reaction is carried out at the reaction temperature of 300 ℃ under the condition of pressing high-pressure air. Although the method can achieve a better treatment effect, the method needs to meet the treatment conditions of high temperature and high pressure, and has the advantages of high energy consumption, large investment, high operation cost and great potential safety hazard.
In view of the foregoing, there is a need in the art for a system for treating organic matter in wastewater that overcomes the above-mentioned drawbacks.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a with low costs, effectual, easy operation just can solve the useless production of solid danger and the processing system of organic matter in waste water of high temperature high pressure potential safety hazard.
In order to achieve the purpose, the utility model provides a treatment system for removing organic matters from high-salinity wastewater, which comprises an ozone generating device, an ozone oxidation device, a photocatalytic decomposition device and a tail gas treatment device;
the ozone oxidation device comprises at least one first-stage heterogeneous ozone oxidation tower and at least one second-stage heterogeneous ozone oxidation tower, wherein a water inlet of the first-stage heterogeneous ozone oxidation tower is arranged at the upper part, a water outlet of the first-stage heterogeneous ozone oxidation tower is arranged at the lower part, a water inlet distributor, a plurality of packing layers and an ozone distributor which are connected with the water inlet are sequentially arranged in the first-stage heterogeneous ozone oxidation tower from top to bottom, a water inlet of the second-stage heterogeneous ozone oxidation tower is arranged at the lower part, a water outlet of the second-stage heterogeneous ozone oxidation tower is arranged at the upper part, and a catalyst layer is arranged in the second-stage heterogeneous ozone oxidation tower;
photocatalytic decomposition device includes two at least photocatalytic oxidation chemical segment set up ozone uniform distributor and a plurality of luminous wavelength adjustable photoelectric tube in the photocatalytic oxidation chemical segment, tail gas processing apparatus passes through the top intercommunication of tail gas duct and each heterogeneous ozone oxidation tower and photocatalytic oxidation chemical segment, ozone generating device passes through ozone duct and each heterogeneous ozone oxidation tower and the ozone uniform distributor intercommunication in the photocatalytic oxidation chemical segment, and the high salt waste water passes through behind each heterogeneous ozone oxidation tower and the photocatalytic oxidation chemical segment in proper order and discharges through the outlet.
Preferably, a water inlet flow meter is arranged on a water inlet pipeline of the high-salinity wastewater, and a gas flow meter is arranged on each ozone conveying pipe.
Preferably, the filler used in the filler layer is stainless steel corrugated plates, and the stainless steel corrugated plates of the upper and lower filler layers are arranged in a staggered manner; the catalyst used in the catalyst layer includes at least one of nickel, chromium, and titanium.
Preferably, the photocatalytic decomposition device comprises a photocatalytic oxidation A section and a photocatalytic oxidation B section, and the wavelength of the photoelectric tube arranged in the photocatalytic oxidation A section is set to be
And
the wavelength of the photoelectric tube arranged in the B section of the photocatalytic oxidation is set as
And
preferably, the tail gas processing apparatus includes a tail gas processing container, a heating pipe, a photoelectric tube and a filter layer arranged in the tail gas processing container, and an induced draft fan and a tail gas outlet arranged on the tail gas processing container.
Preferably, the number of the heating pipes and the photoelectric pipes in the tail gas treatment container is multiple, and the heating pipes and the photoelectric pipes are arranged in an alternating manner.
Preferably, the drain port is in communication with a circulating water basin.
Preferably, a water body monitoring device is arranged between the water outlet and the circulating water pool, and a gas monitoring device is arranged at the tail gas outlet.
The utility model provides a technical scheme has following beneficial effect at least:
1. the utility model discloses a multistage heterogeneous ozone oxidation + ozone light catalytic oxidation's processing technology neither additionally adds any chemical agent, also can not produce the precipitate, has solved the environmental pollution problem that brings by solid danger from the source, compares in wet oxidation method, the utility model discloses the system is by carrying out oxidation reaction under normal atmospheric temperature and normal pressure, has consequently improved the operation security, and 3-5 times less on investment cost, more than 2 times less on the running cost.
2. The utility model discloses select different catalysts and different light-emitting wavelength's photoelectric tube for use to different organic matters, realize the comprehensive oxidative decomposition to each type of organic matter in the waste water, simultaneously through the special design to different heterogeneous ozone oxidation tower structures for ozone and waste water reverse flow fully react on the ripple packing layer in the heterogeneous ozone oxidation tower of one-level, waste water is by supreme and catalyst layer fully reaction down in the heterogeneous ozone oxidation tower of second grade, realizes thoroughly cleaing away organic matter in the waste water, makes it reach emission standard.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings described below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive efforts, wherein:
FIG. 1 is a flow chart showing the structure of a treatment system for removing organic substances from high-salinity wastewater in example 1 of the present invention;
wherein: 1 ozone generator, 2 heterogeneous ozone oxidation towers of one-level, 3 heterogeneous ozone oxidation towers of second grade, 4 photo catalytic oxidation A sections, 5 photo catalytic oxidation B sections, 6 uniform distributors that intake water, 7 packing layers, 8 ozone uniform distributors, 9 catalyst layers, 10 phototubes, 11 tail gas conveying pipes, 12 ozone conveying pipes, 13 flowmeter that intakes water, 14 gas flowmeter, 15 tail gas treatment container, 16 heating pipes, 17 filter layers, 18 draught fans, 19 tail gas outlets.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Example 1
Referring to fig. 1, a treatment system for removing organic matters from high-salinity wastewater comprises an ozone generating device 1, an ozone oxidation device, a photocatalytic decomposition device and a tail gas treatment device.
Ozone oxidation unit includes a heterogeneous ozone oxidation tower of one-level 2 and the heterogeneous ozone oxidation tower of second grade 3, the water inlet setting of the heterogeneous ozone oxidation tower of one-level 2 is in upper portion and the delivery port setting is in the lower part set gradually the equipartition ware 6, three packing layer 7 and the ozone equipartition ware 8 of intaking that is connected with the water inlet from top to bottom in the heterogeneous ozone oxidation tower of one-level 2, the water inlet setting of the heterogeneous ozone oxidation tower of second grade 3 is in the lower part and the delivery port setting is on upper portion set up catalyst layer 9 in the heterogeneous ozone oxidation tower of second grade 3.
Photocatalytic decomposition device includes two photocatalytic oxidation chemical industry sections, and photocatalytic oxidation A section 4 and photocatalytic oxidation B section 5 equally divide in these two photocatalytic oxidation chemical industry sections and do not are equipped with ozone uniform distributor 8 and a plurality of light emitting wavelength adjustable photoelectric tube 10, tail gas processing apparatus passes through tail gas conveying pipe 11 and two heterogeneous ozone oxidation towers and two photocatalytic oxidation chemical industry sections's top intercommunication, ozone generating device 1 passes through ozone conveying pipe 12 and two heterogeneous ozone oxidation towers and two photocatalytic oxidation chemical industry sections in ozone uniform distributor 8 intercommunication, and high salt waste water passes through behind each heterogeneous ozone oxidation tower and the photocatalytic oxidation chemical industry section in proper order and discharges through the outlet.
A water inlet flow meter 13 is arranged on a water inlet pipeline of the high-salinity wastewater, and a gas flow meter 14 is arranged on an ozone conveying pipe 12 correspondingly connected with each ozone uniform distributor 8.
The tail gas treatment device comprises a tail gas treatment container 15, a heating pipe 16, a photoelectric pipe 10, a filter layer 17, an induced draft fan 18 and a tail gas outlet 19, wherein the heating pipe 16, the photoelectric pipe 10 and the filter layer 17 are arranged in the tail gas treatment container 15, and the induced draft fan 18 and the tail gas outlet 19 are arranged on the tail gas treatment container 15. The draught fan 18 generates negative pressure to drive tail gas to flow, the heating pipe 16 and the photoelectric tube 10 can be used for treating redundant ozone and trace other waste gas, the filtering layer 17 is used for slowly buffering the waste gas to be discharged into the atmosphere, and the qualified tail gas treatment can be favorably realized and then the tail gas is emptied.
In this embodiment, the filler used in the filler layer 7 is a stainless steel corrugated plate, and the stainless steel corrugated plates of the upper and lower filler layers are staggered; the catalyst used in the catalyst layer 9 is made of alloy materials such as nickel chromium titanium and the like.
In the present embodiment, the wavelength of the photoelectric cell provided in the photocatalytic oxidation a-stage is set to
And
the wavelength of the photoelectric tube arranged in the B section of the photocatalytic oxidation is set as
And
the wavelength of the heating pipe arranged in the tail gas treatment container is set as
The heating pipe arranged in the tail gas treatment container is specifically an infrared heating pipe and the heating temperature is 150 ℃.
In this embodiment, the number of the heating pipes and the photoelectric pipes in the exhaust gas treatment container 15 is multiple, and the heating pipes and the photoelectric pipes are arranged alternately.
In this embodiment, the drain port communicates with the circulation tank. The qualified water flows into the circulating water tank and can be returned to the production for secondary use, so that water resources are saved, and the water consumption in the production is reduced.
In this embodiment, a water body monitoring device is arranged between the water outlet and the circulating water tank, and a gas monitoring device is arranged at the tail gas outlet for detecting the treatment effect and checking and accepting the water body and the gas according to the emission standard.
All of this embodiment equipment moves under normal atmospheric temperature and pressure, and the body of facilities such as body of the tower, oxidation tank, tail gas processing apparatus all adopts 304 stainless steel, and connecting line all adopts corrosion-resistant stainless steel pipe and engineering plastics, and the outward appearance is clean and tidy beautiful, the washing of being convenient for, and long service life.
The working process of the high-salinity wastewater organic matter removal treatment system is as follows:
the high-salinity wastewater containing organic matters after the pretreatment of precipitation separation enters a one-level heterogeneous ozone oxidation tower 2 through metering, enters a stainless steel corrugated packing layer 7 through a water inlet uniform distributor 6, the metered ozone enters the tower from an ozone uniform distributor 8 at the bottom and fully contacts with the wastewater through the packing layer 7 to be oxidized, and the organic matters in the wastewater are decomposed by breaking bonds under normal pressure.
Other organic matters which are not completely decomposed flow down along with the wastewater and enter the second-stage heterogeneous ozone oxidation tower 3 from the lower part, along with the increase of the water level of the wastewater, the wastewater is mixed with the ozone and then is gradually in full contact with the catalyst layer 9 to carry out catalytic oxidation, the breaking of bonds and the oxidative decomposition of most organic matters are basically completed, and for the organic matter water body of which the ozone is difficult to decompose, the water flows into the photocatalytic oxidation A section 4 under normal pressure.
Under the catalysis of a phototube with a specific type selection, the organic matters which are difficult to decompose are uniformly mixed with ozone for further catalytic oxidation decomposition, and the organic matters which are difficult to decompose and are not completely decomposed continue to enter a photocatalytic oxidation B section 5 for subsequent catalytic oxidation until the decomposition is completely finished.
For the treatment system of the high-salinity wastewater organic matter removal of the utility model, a second-stage oxidation reaction tower is arranged, wherein alcohols, ketones, aldehydes, phenols, general organic acids, benzenes and the like which are easy to decompose and organic matters with unsaturated bonds can be basically decomposed in the first-stage oxidation reaction tower by breaking the bonds, and the heterogeneous ripple packing layer in the tower carries out oxidative decomposition on ozone and wastewater with controllable comparative example; and more complicated organic matters such as heterocycles, furan, pyridine, DMF and the like and organic matters containing saturated bonds are subjected to catalytic oxidation by combining targeted catalyst fillers with ozone to carry out two-stage heterogeneous decomposition, and meanwhile, the opening and bond breaking oxidative decomposition of the organic matters which are not decomposed in the first stage can be perfected.
The catalyst in the secondary oxidation reaction tower is a characteristic alloy material, is corrosion-resistant, is added at one time, does not need to be supplemented and regenerated, is convenient to clean and has long service life; the connecting wires and the control circuit of each photoelectric tube are arranged outside, so that centralized control and maintenance are facilitated.
The treatment system for removing organic matters from high-salt wastewater in the embodiment is applied to the production process of a certain enterprise, the discharge amount of the original high-salt organic wastewater is 200 tons/day, wherein COD is approximately 32000mg/L, ammonia nitrogen is approximately 1250mg/L, the main components of organic matters are methyl pyrrolidone, dichloromethane and aminobenzene, salt is mainly sodium chloride, the content of the salt is 12%, in the wastewater discharged after improvement, COD is less than or equal to 500mg/L, and ammonia nitrogen is less than or equal to 30mg/L, and the discharge standard of an industrial park where the enterprise is located is completely met.
The above description is only a preferred embodiment of the present invention, and does not limit the scope of the present invention, and it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention. Any improvement or equivalent replacement made by utilizing the contents of the specification and the drawings of the present invention can be directly or indirectly applied to other related technical fields within the spirit and principle of the present invention, and shall be included in the scope of the present invention.
Claims (8)
1. A treatment system for removing organic matters from high-salinity wastewater is characterized by comprising an ozone generating device, an ozone oxidation device, a photocatalytic decomposition device and a tail gas treatment device;
the ozone oxidation device comprises at least one first-stage heterogeneous ozone oxidation tower and at least one second-stage heterogeneous ozone oxidation tower, wherein a water inlet of the first-stage heterogeneous ozone oxidation tower is arranged at the upper part, a water outlet of the first-stage heterogeneous ozone oxidation tower is arranged at the lower part, a water inlet distributor, a plurality of packing layers and an ozone distributor which are connected with the water inlet are sequentially arranged in the first-stage heterogeneous ozone oxidation tower from top to bottom, a water inlet of the second-stage heterogeneous ozone oxidation tower is arranged at the lower part, a water outlet of the second-stage heterogeneous ozone oxidation tower is arranged at the upper part, and a catalyst layer is arranged in the second-stage heterogeneous ozone oxidation tower;
photocatalytic decomposition device includes two at least photocatalytic oxidation chemical segment set up ozone uniform distributor and a plurality of luminous wavelength adjustable photoelectric tube in the photocatalytic oxidation chemical segment, tail gas processing apparatus passes through the top intercommunication of tail gas duct and each heterogeneous ozone oxidation tower and photocatalytic oxidation chemical segment, ozone generating device passes through ozone duct and each heterogeneous ozone oxidation tower and the ozone uniform distributor intercommunication in the photocatalytic oxidation chemical segment, and the high salt waste water passes through behind each heterogeneous ozone oxidation tower and the photocatalytic oxidation chemical segment in proper order and discharges through the outlet.
2. The high-salinity wastewater organic matter removing treatment system according to claim 1, wherein a water inlet flow meter is arranged on the water inlet pipeline of the high-salinity wastewater, and a gas flow meter is arranged on each ozone conveying pipe.
3. The high-salinity wastewater organic matter removing treatment system according to claim 2, wherein the filler used in the filler layer is stainless steel corrugated plates, and the stainless steel corrugated plates of the upper and lower filler layers are arranged in a staggered manner; the catalyst used in the catalyst layer includes at least one of nickel, chromium, and titanium.
4. The high salinity wastewater removes processing system of organic matter of claim 3, characterized in that, the photocatalytic decomposition device includes photocatalytic oxidation A section and photocatalytic oxidation B section, the wavelength of the photoelectric tube that sets up in photocatalytic oxidation A section sets up to be
And
the wavelength of the photoelectric tube arranged in the B section of the photocatalytic oxidation is set as
And
5. the high-salinity wastewater organic matter removing treatment system according to any one of claims 2 to 4, wherein the tail gas treatment device comprises a tail gas treatment container, a heating pipe, a photoelectric pipe and a filter layer which are arranged in the tail gas treatment container, and an induced draft fan and a tail gas outlet which are arranged on the tail gas treatment container.
6. The high-salinity wastewater organic matter removing treatment system according to claim 5, wherein the number of the heating pipes and the number of the photoelectric pipes in the tail gas treatment container are both multiple and are arranged in an alternating manner.
7. The high salinity wastewater removes processing system of organic matter according to claim 6, characterized in that, the outlet communicates with the circulating water pond.
8. The high-salinity wastewater organic matter removing treatment system according to claim 7, wherein a water body monitoring device is arranged between the water outlet and the circulating water tank, and a gas monitoring device is arranged at the tail gas outlet.
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| CN202023272580.XU CN214088059U (en) | 2020-12-30 | 2020-12-30 | High salt waste water removes processing system of organic matter |
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| CN202023272580.XU CN214088059U (en) | 2020-12-30 | 2020-12-30 | High salt waste water removes processing system of organic matter |
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