CN211570402U - Photocatalysis-biochemical treatment pyridine waste water's device - Google Patents
Photocatalysis-biochemical treatment pyridine waste water's device Download PDFInfo
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- CN211570402U CN211570402U CN201922403155.0U CN201922403155U CN211570402U CN 211570402 U CN211570402 U CN 211570402U CN 201922403155 U CN201922403155 U CN 201922403155U CN 211570402 U CN211570402 U CN 211570402U
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Abstract
The utility model provides a device of photocatalysis-biochemical treatment pyridine waste water, including the photocatalysis oxidation pond, the equalizing basin, the ABR reaction tank, the SBR reaction tank, the denitrification pond, the clean water basin, scrubbing tower and low temperature mummification machine, the photocatalysis oxidation pond, the equalizing basin, the ABR reaction tank, the SBR reaction tank, the denitrification pond, the clean water basin loops through the liquid pipe connection, all be equipped with the water pump on the liquid pipe, the ABR reaction tank, the gas outlet of SBR reaction tank and denitrification pond all is connected through the air inlet of gas pipeline with the scrubbing tower, the ABR reaction tank, the drain of SBR reaction tank and denitrification pond all is connected through the feed inlet of sewage pipes with low temperature mummification machine, between SBR reaction tank and the ABR reaction tank, all be equipped with the mud backflow pipeline between denitrification pond and the SBR reaction tank. The utility model discloses can high-efficiently get rid of the pyridine in the waste water, guarantee that waste water discharge to reach standard, technology easy operation simultaneously, and no secondary pollution produces.
Description
Technical Field
The utility model relates to the technical field of wastewater treatment, in particular to a device for treating pyridine wastewater through photocatalysis and biochemistry.
Background
Pyridine is a nitrogen-containing heterocyclic compound, is usually used as a chemical raw material, and is widely applied to the industries of agriculture, chemical industry and the like. In the pyridine production process, a large amount of pyridine-containing wastewater is often generated, the wastewater is dark yellow, has malodor and high biotoxicity, is difficult to degrade and cannot be directly subjected to biochemical treatment, so a method of combining pretreatment with the traditional biochemical treatment technology is generally adopted. At present, the research on the biochemical treatment technology of pyridine wastewater is less. In actual treatment, pyridine wastewater and other wastewater are often mixed for biochemical treatment, so that the treatment effect of the whole biochemical treatment system is influenced. The prior pretreatment method of high-concentration pyridine wastewater mainly comprises a chemical oxidation method, a resin adsorption method, an iron-carbon micro-electrolysis method and an incineration method. The chemical oxidation method has low pyridine degradation efficiency, limited treatment effect and easy generation of secondary pollution; the adsorption method can not effectively remove pyridine substances, and ions in the wastewater can also interfere with ion exchange; the micro-electrolysis method can not completely decompose pyridine, and can discard a large amount of filler and solid slag to bring secondary pollution; the incineration method is high in cost and is not an economical and effective means.
The patent with publication number CN206308237U provides a device combining micro-electrolysis-fenton-biochemistry, other compounds can be introduced into the electrolytic cell and the fenton oxidation cell during the use process, which increases the difficulty of wastewater treatment, and the salt in the wastewater can inhibit oxidation, which weakens the effect of pretreatment. Patent publication No. CN104445811A describes a method combining photocatalytic oxidation with biochemical treatment, in which manual aeration is required during the biochemical treatment process, which increases labor cost, and a large amount of waste gas generated during the wastewater oxidation process causes potential harm to constructors, and the activated sludge method often has the problem of unbalanced nutrient supply during the use process, and the manual aeration is the more serious consequence of this problem. Because of the characteristic of high concentration pyridine waste water, simple biochemical treatment can not satisfy the requirement of waste water treatment, and the preliminary pretreatment method is loaded down with trivial details complicacy, and whole running cost is too high, consequently, needs a device of processing pyridine waste water urgently to satisfy pyridine waste water treatment usefulness.
SUMMERY OF THE UTILITY MODEL
The utility model provides a not enough to prior art, the utility model provides a device of photocatalysis-biochemical treatment pyridine waste water, the device can high-efficiently get rid of the pyridine in the waste water, guarantees that waste water discharge to reach standard, and technology easy operation simultaneously, and no secondary pollution produces.
The utility model provides a photocatalysis-biochemical treatment pyridine waste water device, which comprises a photocatalysis oxidation pond, an adjusting pond, an ABR reaction pond, a SBR reaction pond, a denitrification pond, a clear water pond, a washing tower and a low temperature drier, wherein the photocatalysis oxidation pond is connected with the adjusting pond through a liquid pipeline, the adjusting pond is connected with the ABR reaction pond through a liquid pipeline, the ABR reaction pond is connected with the SBR reaction pond through a liquid pipeline, the SBR reaction pond is connected with the denitrification pond through a liquid pipeline, the denitrification pond is connected with the clear water pond through a liquid pipeline, the liquid pipeline is provided with a water pump, the ABR reaction pond, the SBR reaction pond and the denitrification pond are all covered with cover plates, the cover plates are all provided with gas outlets, the gas outlets of the ABR reaction pond, the SBR reaction pond and the denitrification pond are all connected with an air inlet of the washing tower through a gas pipeline, the ABR reaction pond, the SBR reaction pond and the denitrification pond are all provided with blow-off ports, the sewage outlets of the ABR reaction tank, the SBR reaction tank and the denitrification tank are connected with a feed inlet of the low-temperature drying machine through sewage pipes, and sludge return pipes are arranged between the SBR reaction tank and the ABR reaction tank and between the denitrification tank and the SBR reaction tank.
Preferably, ultraviolet lamp tubes are fixedly installed on two side walls of the photocatalytic oxidation tank, a catalyst layer is arranged on the surface of the inner wall of the photocatalytic oxidation tank, and a stirring ring and a rotating blade are arranged in the photocatalytic oxidation tank.
Preferably, a lighting and heat-preserving cover covers the upper part of the adjusting tank.
Preferably, the ABR reaction tank is formed by connecting five identical reaction chambers in series, and the reaction chambers are upflow reaction chambers.
Preferably, the bottom of the SBR reaction tank is provided with a microporous aeration head, four sides of the tank wall of the SBR reaction tank are fixedly provided with movable plates, and the plates are provided with impellers.
Preferably, the denitrification tank is connected with the regulating tank through a liquid pipeline.
Compared with the prior art, the utility model has the advantages that:
the utility model can effectively decompose most of pyridine pollutants by designing the photocatalytic oxidation tank, and the device has simple principle, convenient and easy operation and no secondary pollution; the subsequent biochemical systems such as an adjusting tank, an ABR reaction tank, an SBR reaction tank, a denitrification tank, a clean water tank and the like completely degrade the residual pyridine pollutants in the sewage to ensure that the effluent reaches the discharge standard; the sewage treatment system can realize full-automatic treatment, and saves manpower; the utility model discloses each part ring is detained mutually, closely links up, fine processing pyridine waste water.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the present invention.
In the figure:
1-a photocatalytic oxidation tank, 2-an adjusting tank, 3-an ABR reaction tank, 4-an SBR reaction tank, 5-a denitrification tank, 6-a clean water tank, 7-a washing tower and 8-a low-temperature drier.
Detailed Description
In order to better enable those skilled in the art to understand the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
As shown in figure 1, the device for carrying out photocatalytic-biochemical treatment on pyridine wastewater comprises a photocatalytic oxidation tank 1, an adjusting tank 2, an ABR reaction tank 3, an SBR reaction tank 4, a denitrification tank 5, a clean water tank 6, a washing tower 7 and a low-temperature drier 8, wherein the photocatalytic oxidation tank 1 is connected with the adjusting tank 2 through a liquid pipeline, the adjusting tank 2 is connected with the ABR reaction tank 3 through a liquid pipeline, the ABR reaction tank 3 is connected with the SBR reaction tank 4 through a liquid pipeline, the SBR reaction tank 4 is connected with the denitrification tank 5 through a liquid pipeline, the denitrification tank 5 is connected with the clean water tank 6 through a liquid pipeline, water pumps are arranged on the liquid pipeline, microorganisms adopted by the ABR reaction tank 3, the SBR reaction tank 4 and the denitrification tank 5 are compound microorganism flora comprising acetobacter aceti, liquefied acetobacter aceti, alkali producing bacteria, acetobacter aceti, ammonia producing bacteria, thiobacillus denitrificans, a, Lactobacillus fermentum, pseudomonas alcaligenes, pseudomonas nitrate reductans, nitrosonitroscoccus, nitrobacter winogradskyi, and nitrosomonas europaea.
The top of ABR reaction tank 3, SBR reaction tank 4 and denitrification tank 5 all adds the apron, all is equipped with the gas outlet on the apron, and ABR reaction tank 3, SBR reaction tank 4 all are connected with the gas inlet of scrubbing tower 7 through gas piping with the gas outlet of denitrification tank 5, and waste gas is got rid of through scrubbing tower purification 7 device after the gas collection that the reaction produced.
ABR reaction tank 3, SBR reaction tank 4 all are equipped with the drain with 5 bottoms in denitrification tank, and ABR reaction tank 3, SBR reaction tank 4 all are connected with the feed inlet of low temperature mummification machine 8 through sewage pipes with 5 drains in denitrification tank, and the mud of production is handled through low temperature mummification machine 8, all is equipped with the mud backflow pipeline between SBR reaction tank 4 and the ABR reaction tank 3, between denitrification tank 5 and the SBR reaction tank 4.
Ultraviolet lamp tubes are fixedly arranged on two side walls of the photocatalytic oxidation tank 1, a catalyst layer is arranged on the surface of the inner wall of the photocatalytic oxidation tank 1, and a stirring ring and a rotating blade are arranged in the photocatalytic oxidation tank 1, so that sewage is fully contacted with the catalyst and can be sufficiently illuminated, the sewage enters from top to bottom, and the hydraulic retention time is 5 hours.
A lighting and heat-preserving cover is covered above the adjusting tank 2, and the temperature of the tank body is kept at 25-35 ℃ by utilizing solar energy.
The ABR reaction tank 3 is formed by connecting five same reaction chambers in series, the reaction chambers are upflow reaction chambers, and sewage is filled in one tank body and then overflows into the next tank body.
The bottom of the tank body of the SBR reaction tank 4 is provided with a microporous aeration head, four sides of the tank wall of the SBR reaction tank 4 are fixedly provided with movable plates, the plates are provided with impellers, the rotating speed can be adjusted, and during the operation of the SBR tank, the contact area between sewage and air is increased by the aeration head and the impellers which move up and down, so that the dissolved oxygen in the sewage is sufficient.
The denitrification tank 5 is connected with the regulating tank 2 through a liquid pipeline, and the carbon-nitrogen ratio is adjusted by using newly added wastewater, so that the sewage treatment effect is improved.
The working principle is as follows:
pyridine wastewater with COD of 20000-containing 25000ppm firstly enters a photocatalytic oxidation tank 1, most of the pyridine substances in the wastewater are oxidized and decomposed into micromolecular substances under the action of ultraviolet illumination and a catalyst, the treated wastewater is pumped into a regulating tank 2, the proportion of carbon, nitrogen and phosphorus elements is regulated to 300:5:1, the pH is regulated to 6-8, the COD of the wastewater is controlled to be about 7000ppm, the ammonia nitrogen is about 500ppm, the temperature of the wastewater in the tank is controlled to be within the range of 25-35 ℃, the regulated wastewater is introduced into an ABR reaction tank 3, the wastewater passes through a continuous anaerobic reaction tank, part of the pyridine substances are degraded by microorganisms and simultaneously subjected to ammoxidation reaction, the wastewater stays for 8 hours in the ABR reaction tank 3 and then enters an SBR reaction tank 4 to react for 5 hours under aerobic conditions, the pyridine substances are further decomposed into carbon dioxide and water, and the oxidized wastewater enters a denitrification tank 5, finally, under the action of denitrifying bacteria, nitrate and nitrite are converted into nitrogen, and effluent flows into the clean water tank 6 and can be directly discharged. In the operation process, the ABR reaction tank 3, the SBR reaction tank 4 and the denitrification tank 5 are connected with a sludge return pipeline, so that the concentration of microorganisms in the three reaction tanks can reach the technological requirement level, sludge is periodically discharged through the sludge pipeline, and the collected sludge is treated by a low-temperature drier 8. During operation of the treatment system, the gases produced are collected and treated by means of scrubber 7.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not exhaustive and do not limit the specific implementations of the invention. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (6)
1. The utility model provides a device of photocatalysis-biochemical treatment pyridine waste water which characterized in that: including photocatalytic oxidation pond (1), equalizing basin (2), ABR reaction tank (3), SBR reaction tank (4), denitrification tank (5), clean water basin (6), scrubbing tower (7) and low temperature mummification machine (8), photocatalytic oxidation pond (1) is connected with equalizing basin (2) through liquid pipeline, equalizing basin (2) are connected with ABR reaction tank (3) through liquid pipeline, ABR reaction tank (3) are connected with SBR reaction tank (4) through liquid pipeline, SBR reaction tank (4) are connected with denitrification tank (5) through liquid pipeline, denitrification tank (5) are connected with clean water basin (6) through liquid pipeline, all be equipped with the water pump on the liquid pipeline, ABR reaction tank (3), SBR reaction tank (4) and denitrification tank (5) top all add the apron, all be equipped with the gas outlet on the apron, ABR reaction tank (3), SBR reaction tank (4) all is connected with the air inlet of scrubbing tower (7) through gas conduit with the gas outlet of denitrification tank (5), ABR reaction tank (3), SBR reaction tank (4) all are equipped with the drain with denitrification tank (5) bottom, ABR reaction tank (3), the drain of SBR reaction tank (4) and denitrification tank (5) all is connected with the feed inlet of low temperature desiccator (8) through sewage conduit, between SBR reaction tank (4) and ABR reaction tank (3), all be equipped with the mud backflow pipeline between denitrification tank (5) and SBR reaction tank (4).
2. The apparatus for photocatalytic-biochemical treatment of pyridine waste water according to claim 1, characterized in that: ultraviolet lamp tubes are fixedly installed on two side walls of the photocatalytic oxidation tank (1), a catalyst layer is arranged on the surface of the inner wall of the photocatalytic oxidation tank (1), and a stirring ring and a rotating blade are arranged in the photocatalytic oxidation tank (1).
3. The apparatus for photocatalytic-biochemical treatment of pyridine waste water according to claim 1, characterized in that: and a lighting and heat-insulating cover covers the upper part of the adjusting tank (2).
4. The apparatus for photocatalytic-biochemical treatment of pyridine waste water according to claim 1, characterized in that: the ABR reaction tank (3) is formed by connecting five identical reaction chambers in series, and the reaction chambers are upflow reaction chambers.
5. The apparatus for photocatalytic-biochemical treatment of pyridine waste water according to claim 1, characterized in that: the bottom of the SBR reaction tank (4) is provided with a microporous aeration head, four sides of the tank wall of the SBR reaction tank (4) are fixedly provided with movable plates, and the plates are provided with impellers.
6. The apparatus for photocatalytic-biochemical treatment of pyridine waste water according to claim 1, characterized in that: the denitrification tank (5) is connected with the regulating tank (2) through a liquid pipeline.
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| CN201922403155.0U CN211570402U (en) | 2019-12-27 | 2019-12-27 | Photocatalysis-biochemical treatment pyridine waste water's device |
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| CN201922403155.0U CN211570402U (en) | 2019-12-27 | 2019-12-27 | Photocatalysis-biochemical treatment pyridine waste water's device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112520940A (en) * | 2020-11-19 | 2021-03-19 | 南京谱华科技有限公司 | Photocatalytic biological reaction system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112520940A (en) * | 2020-11-19 | 2021-03-19 | 南京谱华科技有限公司 | Photocatalytic biological reaction system |
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