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CN216236555U - Sulfur-containing organic wastewater treatment system - Google Patents

Sulfur-containing organic wastewater treatment system Download PDF

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Publication number
CN216236555U
CN216236555U CN202122779187.8U CN202122779187U CN216236555U CN 216236555 U CN216236555 U CN 216236555U CN 202122779187 U CN202122779187 U CN 202122779187U CN 216236555 U CN216236555 U CN 216236555U
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sulfur
containing organic
organic wastewater
biological treatment
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黄钰航
谢奇旭
谭发祥
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Suzhou Topco Construction Ltd
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Suzhou Topco Construction Ltd
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Abstract

The utility model discloses a sulfur-containing organic wastewater treatment system which comprises a biological treatment device, a washing device, a chlorine dioxide generator and a solid-liquid separation device. The input end of the washing device is communicated with the first discharge end of the biological treatment device through an exhaust pipeline, the gas outlet end of the chlorine dioxide generator is communicated with the exhaust pipeline, and the input end of the solid-liquid separation device is communicated with the second discharge end of the biological treatment device. Therefore, the odor gas generated by the sulfur-containing organic wastewater in biological treatment can be effectively prevented from escaping into the surrounding environment, and the aim of water quality purification can be quickly achieved.

Description

Sulfur-containing organic wastewater treatment system
Technical Field
The utility model relates to a wastewater treatment system, in particular to a sulfur-containing organic wastewater treatment system which can effectively prevent generated odorous gas from escaping into the surrounding environment.
Background
In recent years, the harm of sulfur-containing organic wastewater to the environment is becoming more serious, and the main sources of the sulfur-containing organic wastewater are chemical industry, pharmaceutical industry and the like, so the sulfur-containing organic wastewater needs to be properly treated. The sulfur-containing organic wastewater is mostly treated biologically, and organic sulfur pollutants are decomposed by the biochemical action of microorganisms. However, the intermediate products of organic sulfur decomposition such as methyl mercaptan or ethyl sulfide are easily volatilized from wastewater and have obvious odor, and such gaseous odor substances are easily caused to cause odor in the surrounding environment and seriously affect the life quality of residents if directly dissipated into the atmosphere without being treated.
Therefore, in the conventional treatment technique, exhaust gas from biological treatment is introduced into a washing apparatus, and odor substances such as methyl mercaptan and ethyl sulfide are dissolved in washing water and removed from the gas. However, since the odor substances such as methyl mercaptan and ethyl sulfide are not soluble in water and are not easily washed with washing water, the effect of purifying the odor substances is limited.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem of environmental malodor caused by sulfur-containing organic wastewater treatment, and adopts the following technical means: the exhaust gas is introduced into a chlorine dioxide generator to generate chlorine dioxide gas, and the chlorine dioxide gas is subjected to oxidation reaction on the exhaust gas of the biological treatment device to convert the gas with poor water solubility into the gas with high water solubility, and then the gas is removed by a rear-end washing device (the gas is absorbed into the washing liquid).
In order to solve the above technical problems, one of the technical solutions of the present invention is to provide a sulfur-containing organic wastewater treatment system, which includes a biological treatment device, a washing device, a chlorine dioxide generator, and a solid-liquid separation device. An input end of the washing device is communicated with a first discharge end of the biological treatment device through an exhaust pipeline, an air outlet end of the chlorine dioxide generator is communicated with the exhaust pipeline, and an input end of the solid-liquid separation device is communicated with a second discharge end of the biological treatment device.
In an embodiment of the present invention, the sulfur-containing organic wastewater treatment system further includes an oxidation device, a first input end of the oxidation device is communicated with a liquid discharge end of the solid-liquid separation device, and a second input end of the oxidation device is also communicated with the gas outlet end of the chlorine dioxide generator.
In an embodiment of the present invention, the gas outlet of the chlorine dioxide generator is connected to the exhaust line via a feed line, and the feed line is further connected to the second input of the oxidation device.
In an embodiment of the present invention, the system for treating sulfur-containing organic wastewater further includes a concentration device and a dewatering device, an input end of the concentration device is communicated with a sludge discharge end of the solid-liquid separation device, and an input end of the dewatering device is communicated with a discharge end of the concentration device.
In one embodiment of the present invention, a first input of the biological treatment device is configured to introduce the sulfur-containing organic wastewater to be treated, and a second input of the biological treatment device is in communication with a liquid discharge of the scrubbing device.
In one embodiment of the present invention, the second input end of the biological treatment device is in communication with the liquid discharge end of the washing device through a return line.
In an embodiment of the utility model, the input end of the concentration device is communicated with the sludge discharge end of the solid-liquid separation device through a conveying pipeline, and a third input end of the biological treatment device is communicated with the conveying pipeline through another return pipeline.
In an embodiment of the present invention, a fourth input end of the biological treatment device is communicated with a discharge end of the dehydration device through another return line.
In an embodiment of the utility model, the washing apparatus further has a gas discharging end, and the gas discharging end is provided with one or more gas monitoring units.
In one embodiment of the present invention, the biological treatment apparatus comprises one or more bioreactors, and the solid-liquid separation apparatus comprises a settling tank, a flotation tank or a membrane filter.
One of the benefits of the present invention is that the sulfur-containing organic wastewater treatment system of the present invention can effectively prevent the odor gas generated by the sulfur-containing organic wastewater from escaping into the surrounding environment and quickly achieve the goal of water quality purification through the technical scheme that "one input end of the washing device is communicated with a first discharge end of the biological treatment device through an exhaust pipeline, one gas outlet end of the chlorine dioxide generator is communicated with the exhaust pipeline, and one input end of the solid-liquid separation device is communicated with a second discharge end of the biological treatment device". In the whole treatment process, water to be treated can be led into an oxidation device at the rear end for further treatment according to the water quality fluctuation condition so as to remove residual organic matters in the water and reduce the content of COD (chemical oxygen demand) in the water.
For a better understanding of the features and technical content of the present invention, reference should be made to the following detailed description of the utility model and accompanying drawings, which are provided for purposes of illustration and description only and are not intended to limit the utility model.
Drawings
FIG. 1 is a schematic configuration diagram of a sulfur-containing organic wastewater treatment system according to a first embodiment of the present invention.
FIG. 2 is a schematic view showing the internal structure of an exhaust line of a sulfur-containing organic wastewater treatment system according to a first embodiment of the present invention.
FIG. 3 is a schematic configuration diagram of a sulfur-containing organic wastewater treatment system according to a second embodiment of the present invention.
Detailed Description
The following is a description of the embodiments of the "sulfur-containing organic wastewater treatment system" disclosed in the present invention by specific examples, and those skilled in the art can understand the advantages and effects of the present invention from the disclosure in the present specification. The utility model is capable of other and different embodiments and its several details are capable of modification and various other changes, which can be made in various details within the specification and without departing from the spirit and scope of the utility model. The drawings of the present invention are for illustrative purposes only and are not intended to be drawn to scale. The following embodiments will further explain the related art of the present invention in detail, but the disclosure is not intended to limit the scope of the present invention. In addition, the term "or" as used herein should be taken to include any one or combination of more of the associated listed items as the case may be.
Although the terms "first", "second", "third", etc. are used herein to describe the transfer lines of wastewater or sludge, these terms are primarily used to distinguish one transfer line from another, or to distinguish one discharge line from another, and are not used to limit these transfer lines.
First embodiment
Referring to FIG. 1, there is shown a main configuration of a sulfur-containing organic wastewater treatment system Z1 according to a first embodiment of the present invention. As shown in FIG. 1, the sulfur-containing organic wastewater treatment system Z1 mainly comprises a biological treatment device 1, a washing device 2, a chlorine dioxide generator 3 and a solid-liquid separation device 4. The washing device 2 communicates with the biological treatment device 1, the chlorine dioxide generator 3 is configured to perform oxidation treatment on the exhaust gas of the biological treatment device 1, and the solid-liquid separation device 4 also communicates with the biological treatment device 1. In the whole treatment process, the chlorine dioxide gas generated by the chlorine dioxide generator 3 can quickly oxidize organic sulfur (organic-sulfur compounds) generated by the sulfur-containing organic wastewater in biological treatment into sulfur oxides with high water solubility, and then the sulfur oxides are removed by the rear-end washing device 2 (gas is absorbed into the washing liquid); moreover, the biologically treated water can be introduced into a solid-liquid separation device 4 to separate sludge solids from the biologically treated water, so that the concentration of solids in the water meets the discharge standard of the regulations.
The details of the operations of the biological treatment apparatus 1, the washing apparatus 2, the chlorine dioxide generator 3 and the solid-liquid separation apparatus 4 will be described below, respectively, and the connection relationship therebetween will be further described later.
The biological treatment apparatus 1 may have a first input end 11, a first discharge end 12 and a second discharge end 13. The first input end 11 is configured to introduce the sulfur-containing organic wastewater to be treated into the apparatus for biological treatment, i.e. decomposition of organic matter in the water by means of microorganisms or a mixed microorganism system; the treatment conditions include, but are not limited to, controlling the pH of the wastewater to 6.5 to 8.5. The first discharge end 12 is configured to discharge the gas generated in the biological treatment process, which contains odorous substances, mainly organic sulfur (such as methyl mercaptan or ethyl sulfide), out of the apparatus. The second discharge end 13 is configured to discharge the biologically treated water out of the apparatus. Further, the biological treatment apparatus 1 may include one or more bioreactors, such as one or a combination of two or more of aerobic bioreactor, facultative bioreactor and anaerobic bioreactor, but the utility model is not limited thereto.
The scrubber 2 may be a scrubber tower having an input 21, a gas discharge 22 and a liquid discharge 23. The input 21 is configured to introduce the biologically treated exhaust gas after oxidation treatment into the apparatus for scrubbing, and to deliver sulfur oxides converted from organic sulfur in the gas to scrubbing liquid (e.g., water or chemicals) by contacting the gas with the scrubbing liquid to reduce odorous substances entering the atmosphere. The gas discharge end 22 is configured to discharge the washed exhaust gas of the biological treatment out of the device, while the liquid discharge end 23 is configured to discharge the washing waste liquid (used washing liquid) out of the device. It is worth to say that the water solubility of the sulfur oxides is higher than that of gases such as methyl mercaptan, ethyl sulfide and the like, and the sulfur oxides are easier to be washed, dissolved and absorbed by water and removed from exhaust gas, so that the sulfur-containing organic wastewater treatment system Z1 can achieve the aim of water quality purification and solve the problem of environmental malodor caused by the treatment process.
More specifically, the first discharge end 12 of the biological treatment apparatus 1 can be connected to the input end 21 of the washing apparatus 2 through a gas discharge line C1, the chlorine dioxide generator 3 has a gas discharge end 31, and the gas discharge end 31 is connected to a gas discharge line C1, so as to introduce the generated chlorine dioxide gas into the gas discharge line C1 for oxidation reaction with the biologically treated exhaust gas, and the amount of the introduced gas can be adjusted according to the concentration of organic sulfur (such as methyl mercaptan or ethyl sulfide) in the gas discharged from the gas discharge end 22 of the washing apparatus 2. In practice, the chlorine dioxide generator 3 may be a reactive gas generator, which adds the required precursor substances into the reactor to react to generate chlorine dioxide gas, wherein the gas outlet 31 of the chlorine dioxide generator 3 may be connected to the gas outlet line C1 through a feed line D1. In addition, the gas discharge end 22 of the washing device 2 may be provided with one or more gas monitoring units 24 to know the concentration condition of the current organic sulfur, or to sense the odor threshold (odor threshold) of the current organic sulfur through artificial smell.
Referring to FIG. 2, the internal structure of the exhaust line C1 between the biological treatment apparatus 1 and the washing apparatus 2 is shown. As shown in fig. 2, one or more baffle structures S (e.g., baffles) may be disposed in the exhaust line C1 to increase the reaction time, and the baffle structures S may have gas channels (not shown).
The solid-liquid separation device 4 may have an input end 41, a sludge discharge end 42 and a liquid discharge end 43. Input 41 is configured to introduce the biologically treated wastewater into the apparatus for solid-liquid separation to separate particles and sludge from the body of water. The sludge discharge end 42 is configured to discharge particulates and sludge-like materials out of the apparatus, while the liquid discharge end 43 is configured to discharge clarified water out of the apparatus. More particularly, the solid-liquid separation device 4 may comprise a settling tank in which the biologically treated wastewater may be retained for a period of time at a set surface overflow rate and removed from the body of water after the particles and sludge have moved downwardly by gravity to the bottom of the device; alternatively, the solid-liquid separation device 4 may comprise a flotation tank wherein the biologically treated wastewater may be retained for a period of time at a set surface overflow rate and removed from the body of water after the particles and sludge have moved upwardly to the top of the device by buoyancy. The above description is only a possible embodiment and is not intended to limit the present invention.
In this embodiment, the sulfur-containing organic wastewater treatment system Z1 may further include a concentration device 5 and a dehydration device 6 to achieve sludge reduction and reduce sludge treatment and disposal costs. The concentration device 5 may be a gravity concentration device, an air flotation concentration device or a centrifugal concentration device, and may have an input end 51 for introducing the sludge separated by the solid-liquid separation device 4 into the device for concentration to increase the concentration of the sludge and reduce the volume of the sludge, and a discharge end 52 for discharging the concentrated sludge out of the device. Alternatively, the dewatering device 6 may be a mechanical dewatering device, which may have an input 61 for introducing the thickened sludge into the device for dewatering, and the resulting solid waste may be moved to a desired location for final treatment and disposal (e.g., stabilization, solidification, landfill or incineration).
In practical use, the first input end 11 of the biological treatment device 1 can be communicated with the first conveying line A1 to introduce the sulfur-containing organic wastewater to be treated through the first conveying line A1; the sulfur-containing organic wastewater may be subjected to one or more pretreatment processes to reduce the amount of materials in the wastewater that may kill or inhibit the growth of microorganisms, and then introduced into first transfer line a 1. Also, the input end 41 of the solid-liquid separation device 4 may communicate with the second discharge end 13 of the biological treatment device 1 through the second transfer line a2, the input end 51 of the concentration device 5 may communicate with the sludge discharge end 42 of the solid-liquid separation device 4 through the third transfer line A3, and the input end 61 of the dehydration device 6 may communicate with the discharge end 52 of the concentration device 5 through the fourth transfer line a 4.
Referring back to FIG. 1, according to practical requirements, such as to improve the circulation and practicability of the sulfur-containing organic wastewater treatment system Z1, the biological treatment apparatus 1 may further have a second input end 14, and the liquid discharge end 23 of the washing apparatus 2 may be communicated with the second input end 14 of the biological treatment apparatus 1 through a first return line B1; accordingly, the waste washing liquid discharged from the washing apparatus 2 can be returned to the biological treatment apparatus 1 to be subjected to the biological treatment again. In addition, the biological treatment apparatus 1 may further have a third input 15, the third transfer line a3 between the solid-liquid separation apparatus 4 and the concentration apparatus 5 may have a branching point P, and the branching point P may communicate with the third input 15 of the biological treatment apparatus 1 through the second return line B2; accordingly, part of the sludge separated by the solid-liquid separation device 4 can be returned to the biological treatment device 1 to participate in the biological treatment again so as to reach the preset treatment standard. Furthermore, the dewatering device 6 may further have a discharge end 62, the biological treatment device 1 may further have a fourth input end 16, and the discharge end 62 of the dewatering device 6 may be communicated with the fourth input end 16 of the biological treatment device 1 through a third return line B3; accordingly, the liquid removed by the dehydration unit 6 can be returned to the biological treatment apparatus 1 for further treatment.
In addition, each pipe may be connected with a pump, a valve and a flow detector (not shown), and all the pumps and valves are controlled by one or more control units to realize the automatic control of the transportation, circulation and discharge of the water body or slurry.
Second embodiment
Referring to FIG. 3, there is shown a main configuration of a sulfur-containing organic wastewater treatment system Z2 according to a second embodiment of the present invention. As shown in fig. 3, in addition to the biological treatment apparatus 1, the washing apparatus 2, the chlorine dioxide generator 3, the solid-liquid separation apparatus 4, the concentration apparatus 5 and the dehydration apparatus 6 described in the first embodiment, the sulfur-containing organic wastewater treatment system Z2 further includes an oxidation apparatus 7 disposed at the rear end of the solid-liquid separation apparatus 4, which is capable of further removing organic contaminants remaining in the clarified water discharged from the solid-liquid separation apparatus 4, so as to improve the treatment efficiency of the sulfur-containing organic wastewater.
In the present embodiment, the oxidation device 7 may have a first input end 71, a second input end 72 and a discharge end 73. The first input 71 is configured to introduce clarified water discharged from the solid-liquid separation device 4 into the device for oxidation treatment, thereby oxidatively decomposing organic contaminants remaining in the water. The second input end 72 is configured to introduce chlorine dioxide gas generated by the chlorine dioxide generator 3 into the apparatus and dissolve it in water for use as an oxidant, while the discharge end 73 is configured to discharge the clarified water after oxidation treatment out of the apparatus for recycling or discharge after reaching a discharge standard.
In practical use, the first input end 11 of the biological treatment device 1 can be communicated with the first conveying line A1 to introduce the sulfur-containing organic wastewater to be treated through the first conveying line A1; the sulfur-containing organic wastewater may be subjected to one or more pretreatment processes to reduce the amount of materials in the wastewater that may kill or inhibit the growth of microorganisms, and then introduced into first transfer line a 1. Also, the input 41 of the solid-liquid separation device 4 may communicate with the second discharge end 13 of the biological treatment device 1 through the second transfer line a2, the input 51 of the concentration device 5 may communicate with the sludge discharge end 42 of the solid-liquid separation device 4 through the third transfer line A3, the input 61 of the dehydration device 6 may communicate with the discharge end 52 of the concentration device 5 through the fourth transfer line a4, and the first input 71 of the oxidation device 7 may communicate with the liquid discharge end 43 of the solid-liquid separation device 4 through the fifth transfer line a 5. In addition, the first discharge end 12 of the biological treatment apparatus 1 may be in communication with the input 21 of the washing apparatus 2 via a discharge line C1, and the outlet end 31 of the chlorine dioxide generator 3 may be in communication with a discharge line C1 via a feed line D1, wherein the feed line D1 may be further connected to the second input 72 of the oxidation apparatus 7.
In addition, each pipe may be connected with a pump, a valve and a flow detector (not shown), and all the pumps and valves are controlled by one or more control units to realize the automatic control of the transportation, circulation and discharge of the water body or slurry.
The related technical details mentioned in the first embodiment are still valid in this embodiment, and are not described herein again in order to reduce repetition. Also, the related-art details mentioned in the present embodiment can be applied to the first embodiment.
Advantageous effects of the embodiments
One of the benefits of the present invention is that the sulfur-containing organic wastewater treatment system of the present invention can effectively prevent the odor gas generated by the sulfur-containing organic wastewater from escaping into the surrounding environment and quickly achieve the goal of water quality purification through the technical scheme that "one input end of the washing device is communicated with a first discharge end of the biological treatment device through an exhaust pipeline, one gas outlet end of the chlorine dioxide generator is communicated with the exhaust pipeline, and one input end of the solid-liquid separation device is communicated with a second discharge end of the biological treatment device". In the whole treatment process, water to be treated can be led into an oxidation device at the rear end for further treatment according to the water quality fluctuation condition so as to remove residual organic matters in the water and reduce the content of COD (chemical oxygen demand) in the water.
The disclosure is only a preferred embodiment of the utility model, and is not intended to limit the scope of the claims, so that all technical equivalents and modifications using the contents of the specification and drawings are included in the scope of the claims.

Claims (10)

1. A sulfur-containing organic wastewater treatment system, comprising:
a biological treatment device;
a washing device, an input end of the washing device is communicated with a first discharge end of the biological treatment device through an exhaust pipeline; and
the gas outlet end of the chlorine dioxide generator is communicated with the gas exhaust pipeline; and
and one input end of the solid-liquid separation device is communicated with a second discharge end of the biological treatment device.
2. The sulfur-containing organic wastewater treatment system of claim 1 further comprising an oxidation unit, a first input of said oxidation unit being in communication with a liquid discharge of said solid-liquid separation unit and a second input of said oxidation unit also being in communication with said gas outlet of said chlorine dioxide generator.
3. The sulfur-containing organic wastewater treatment system of claim 2, wherein said outlet end of said chlorine dioxide generator is in communication with said exhaust line via a feed line, and said feed line is further connected to said second input end of said oxidizer.
4. The sulfur-containing organic wastewater treatment system according to claim 2, further comprising a concentration device and a dewatering device, wherein an input end of the concentration device is communicated with a sludge discharge end of the solid-liquid separation device, and an input end of the dewatering device is communicated with a discharge end of the concentration device.
5. The sulfur-containing organic wastewater treatment system of claim 4, wherein a first input of the biological treatment device is configured to introduce the sulfur-containing organic wastewater to be treated, and a second input of the biological treatment device is in communication with a liquid discharge of the scrubbing device.
6. The sulfur-containing organic wastewater treatment system of claim 5, wherein said second input of said biological treatment unit is in communication with said liquid discharge of said scrubbing unit via a return line.
7. The sulfur-containing organic wastewater treatment system according to claim 4, wherein the input end of the concentration device is communicated with the sludge discharge end of the solid-liquid separation device through a transfer line, and a third input end of the biological treatment device is communicated with the transfer line through another transfer line.
8. The sulfur-containing organic wastewater treatment system according to claim 7, wherein a fourth input end of the biological treatment device is connected to a discharge end of the dewatering device through a further return line.
9. The sulfur-containing organic wastewater treatment system according to any one of claims 1 to 8, wherein said scrubbing device further has a gas discharge end, and said gas discharge end is provided with one or more gas monitoring units.
10. The sulfur-containing organic wastewater treatment system according to any one of claims 1 to 8, wherein the biological treatment device comprises one or more bioreactors, and the solid-liquid separation device comprises a settling tank, a flotation tank or a membrane filter.
CN202122779187.8U 2021-11-12 2021-11-12 Sulfur-containing organic wastewater treatment system Active CN216236555U (en)

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Application Number Priority Date Filing Date Title
CN202122779187.8U CN216236555U (en) 2021-11-12 2021-11-12 Sulfur-containing organic wastewater treatment system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122779187.8U CN216236555U (en) 2021-11-12 2021-11-12 Sulfur-containing organic wastewater treatment system

Publications (1)

Publication Number Publication Date
CN216236555U true CN216236555U (en) 2022-04-08

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