CN213965901U - Purification system for sulfur-containing organic waste gas - Google Patents
Purification system for sulfur-containing organic waste gas Download PDFInfo
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- CN213965901U CN213965901U CN202021949058.8U CN202021949058U CN213965901U CN 213965901 U CN213965901 U CN 213965901U CN 202021949058 U CN202021949058 U CN 202021949058U CN 213965901 U CN213965901 U CN 213965901U
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Abstract
The utility model provides a contain sulphur organic waste gas's clean system. The purification system comprises an absorption tower and a membrane-carried biological deodorization reactor which are communicated; the membrane-carried biological deodorization reactor comprises a reactor body, a plurality of membrane components, a plurality of back-washing aeration heads and a first air supply unit; the membrane component and the back washing aeration head are arranged in the reactor body; the first gas supply unit is communicated with the membrane module; the back washing aeration head is arranged towards the membrane component. The utility model discloses can realize that contain sulphur stench organic pollutant removal efficiency is more than or equal to 99.9%, and oxygen utilization efficiency is more than or equal to 99%.
Description
Technical Field
The utility model belongs to the technical field of the environmental protection, especially, relate to a sulfur-containing organic waste gas's clean system.
Background
Along with the development of industrial production, the odor pollution is gradually intensified, the living environment of surrounding residents is seriously influenced, and a great deal of complaints of the residents are caused. In the human industrial production process, such as petroleum smelting plants, pesticide plants, rubber plants, paper mills, chemical plants and the like, a large amount of sulfur-containing malodorous organic pollutants are released, some urban public facilities such as refuse landfills and sewage treatment plants also generate sulfur-containing malodorous organic pollutants, and investigation shows that a certain refuse landfill gas collecting well contains high-concentration methyl sulfide (36847-3) Methyl mercaptan (15136-3) Carbon disulfide (8757-9009. mu.g/m)3) And dimethyl disulfide (2945-4561. mu.g/m)3). The sulfur-containing malodorous organic pollutants have the properties of low odor threshold, high toxicity and high corrosion, contain acidic components, have strong corrosivity and reducibility, can corrode metals and poison petroleum products. Its existence is more direct to make people produce discomfort, endangers human health: the respiratory system is influenced, and the existence of the malodor causes unpleasant feeling and strongly stimulates the sense organ to hinder the normal breathing; the circulation system is obstructed, and along with the breathing process, part of malodorous substances can enter the circulation system, for example, hydrogen sulfide has strong toxicity, and can obstruct the transportation of oxygen after entering blood in the circulation process, thereby influencing the normal physiological function of a human body; the digestive system is damaged, and the nausea, vomiting, anorexia and other symptoms can be caused by frequent contact with malodorous substances, so that the digestive deterioration, the endocrine disturbance and the like are caused; affecting the nervous system and causing poisoning of nerves by prolonged exposure to malodour, e.g. CS2Has neurotoxicity and damage to the brain; the organic acid-base compound liquid can damage human organs, and can corrode organs such as eyes and skin of a human body after being contacted with acidic malodorous substances for a long time, so that the eyes are damaged, and the normal vision of the human is influenced; part of the organic malodorous substances may also cause poisoning, canceration and even death. Thus, isTherefore, residents have healthier production and life, and the treatment of sulfur-containing malodorous organic pollutants needs to be solved urgently.
The traditional stink removing method mainly comprises three aspects of physics, biology and chemistry, the physical process mainly comprises water absorption, physical adsorption, cooling and condensation, masking, dilution and the like, the stink gas is removed by adopting the physical method, the gas is not really removed, and only is transferred or masked, so that the stink can be removed by further subsequent treatment. The chemical process mainly comprises wet chemical absorption, chemical adsorption, chemical oxidation, catalytic oxidation and the like, and the problems of secondary pollution, high operation cost and the like exist when malodorous gas is removed by a chemical method. Biological deodorization has attracted extensive attention due to its advantages of high purification efficiency, low investment cost, no secondary pollution, etc. At present, research on removing sulfur-containing malodor by a biological method is mainly focused on a biological trickling filter, and the problems of easy blockage and low gas-liquid mass transfer efficiency exist.
SUMMERY OF THE UTILITY MODEL
In view of the above prior art's shortcoming, the utility model aims to provide a contain sulfur organic waste gas's clean system can realize containing sulfur stench organic pollutant and get rid of efficiency and be greater than or equal to 99.9%, and oxygen utilization efficiency is greater than or equal to 99%.
In order to achieve the above objects and other related objects, the present invention provides a purification system for sulfur-containing organic waste gas, comprising an absorption tower and a membrane-supported biological deodorization reactor which are communicated with each other; the membrane-carried biological deodorization reactor comprises a reactor body, a plurality of membrane components, a plurality of back-washing aeration heads and a first air supply unit;
the membrane module and the back washing aeration head are arranged in the reactor body;
the first gas supply unit is communicated with the membrane module; the back washing aeration head is arranged towards the membrane module.
Preferably, at least one of the following technical features is also included:
1) the absorption tower is provided with a spray liquid inlet, a waste gas inlet, a waste liquid outlet and a gas phase outlet, the spray liquid inlet and the gas phase outlet are positioned above the waste gas inlet, and the waste liquid outlet is communicated with the membrane-borne biological deodorization reactor;
2) the purification system also comprises a spray liquid unit which is communicated with the absorption tower;
3) the purification system also comprises a first air blower for introducing the sulfur-containing organic waste gas into the absorption tower, and the first air blower is communicated with the absorption tower;
4) the membrane-carried biological deodorization reactor also comprises a second air supply unit; the second air supply unit is communicated with the backwashing aeration head;
5) the reactor body is cylindrical, the membrane-supported biological deodorization reactor further comprises a water inlet, a water inlet well, a water inlet channel and a plurality of water distribution holes, the water inlet is formed in the reactor body, the water inlet is communicated with the water inlet well, the water inlet channel is arranged on the inner wall of the reactor body in a surrounding mode, and the water distribution holes are formed in the water inlet channel;
6) the membrane-carried biological deodorization reactor also comprises a water outlet and a water outlet well, wherein the water outlet well is arranged in the reactor body, the water outlet is arranged on the reactor body, and the water outlet is communicated with the water outlet well;
7) the reactor body is cylindrical, and the membrane modules are arranged in the reactor body in an annular array;
8) the first gas supply unit comprises an oxygen storage tank, a first pipeline and a plurality of second pipelines, each second pipeline is communicated with each membrane module, and the oxygen storage tank is communicated with the plurality of second pipelines through the first pipeline;
9) the membrane-loaded biological deodorization reactor also comprises a gas phase discharge port, and the gas phase discharge port is arranged at the top of the reactor body;
10) the carrier membrane in the membrane module is a non-porous hollow fiber membrane.
More preferably, the device of the feature 2) further comprises a pH detection unit, wherein the pH detection unit is arranged in the spray liquid unit.
More preferably, in the feature 4), the second air supply unit comprises a blower and a third pipeline, and the blower is communicated with the backwashing aeration heads through the third pipeline.
Further more preferably, the second gas supply unit further comprises a third valve, and the third valve is disposed on the third pipeline.
More preferably, in feature 5), at least one of the following technical features is further included:
51) a horizontally arranged water retaining skirtboard and a vertically arranged baffle are arranged below the water inlet channel, one end of the water retaining skirtboard is connected with the inner side wall of the reactor body, and a gap is formed between the other end of the water retaining skirtboard and the baffle so as to form a water flowing channel;
52) the water inlet is also provided with a water inlet valve and/or a first pollutant detection unit;
53) the water distribution holes are arranged in a dense mode from sparse to dense along the water flow direction.
More preferably, in feature 6), at least one of the following technical features is further included:
61) the membrane-carried biological deodorization reactor also comprises a mud outlet well and a mud discharge pipe, wherein the mud outlet well is arranged below the water outlet well, a mud discharge hole is formed in the mud outlet well, and the mud outlet well is communicated with the mud discharge pipe;
62) and a second pollutant detection unit is also arranged on the water outlet.
More preferably, in feature 7), the membrane module is arranged from dense to sparse in the radial direction from the periphery of the inlet water to the center of the outlet water.
More preferably, in feature 8), at least one of the following technical features is further included:
81) the first gas supply unit also comprises a first valve which is arranged on the first pipeline;
82) the first gas supply unit also comprises a plurality of second valves, and each second valve is arranged on each second pipeline.
Preferably, the membrane-supported bio-deodorization reactor further comprises a control unit in signal connection with at least one selected from the group consisting of the pH detection unit, the water inlet valve, the first contaminant detection unit, the first valve, the third valve, and the second contaminant detection unit.
The technical scheme has the following beneficial effects:
(1) the utility model has the advantages of compact device, small occupied area, simple operation, high automation degree, easy popularization and the like.
(2) The utility model discloses can realize the regulation to the biomembrane is thick, high-efficient degradation microorganism metabolic activity is high.
(3) The utility model discloses can realize spraying liquid cyclic utilization, reduce oxygen air supply volume, the running cost is low.
(4) The utility model discloses can improve oxygen utilization efficiency in high-efficient purification according to contain sulphur pollutant influent concentration and go out water concentration dynamic adjustment oxygen air supply volume, this method can realize containing sulphur stench organic pollutant removal efficiency at the highest more than or equal to 99.9%, and oxygen utilization efficiency is more than or equal to 99%.
Drawings
Fig. 1 shows a purification system diagram of the sulfur-containing organic waste gas of the present invention: the figure shows a main view structure schematic diagram of the membrane-carried biological deodorization reactor.
FIG. 2 is a schematic view of the membrane-supported biological deodorization reactor in the purification system according to the present invention.
Reference numerals
1 absorption tower
11 spray liquid inlet
12 waste gas inlet
13 waste liquid outlet
14 gas phase outlet
2 membrane carried biological deodorization reactor
21 reactor body
22 membrane module
23 back flush aeration head
24 first air supply unit
241 oxygen storage tank
242 first conduit
243 second conduit
244 first valve
245 second valve
25 second air supply unit
251 blower
252 third conduit
253 third valve
26 water inlet
261 water inlet valve
262 first contaminant detection unit
27 water inlet well
28 water inlet channel
29 water distribution hole
210 water outlet
211 water outlet well
212 gas phase exhaust port
213 Water-retaining skirt board
214 baffle
215 mud well
2151 mud discharging hole
216 sludge discharge pipe
217 control unit
3 spray liquid unit
4 pH detection unit
5 first blower
Detailed Description
The technical solution of the present invention is explained below by specific examples. It is to be understood that one or more method steps mentioned in the present application do not exclude the presence of other method steps before or after said combination step or that other method steps may be inserted between these explicitly mentioned steps; it should also be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Moreover, unless otherwise indicated, the numbering of the various method steps is merely a convenient tool for identifying the various method steps, and is not intended to limit the order in which the method steps may be arranged or the scope of the invention which may be practiced.
A purification system of sulfur-containing organic waste gas is shown in figure 1 and comprises an absorption tower 1 and a membrane-carried biological deodorization reactor 2 which are communicated; the membrane-carried biological deodorization reactor 2 comprises a reactor body 21, a plurality of membrane modules 22, a plurality of back-washing aeration heads 23 and a first air supply unit 24;
the membrane module 22 and the back-washing aeration head 23 are arranged in the reactor body 21;
the first gas supply unit 24 is communicated with the membrane module 22; the backwash aeration head 23 is disposed toward the membrane module 22.
In a preferred embodiment, the absorption tower 1 is provided with a spray liquid inlet 11, an exhaust gas inlet 12, a waste liquid outlet 13 and a gas phase outlet 14, the spray liquid inlet 11 and the gas phase outlet 14 are positioned above the exhaust gas inlet 12, and the waste liquid outlet 13 is communicated with the membrane-supported biological deodorization reactor 2.
In a preferred embodiment, the purification system further comprises a spray liquid unit 3, and the spray liquid unit 3 is communicated with the absorption tower 1.
In a preferred embodiment, the device further comprises a pH detection unit 4, and the pH detection unit 4 is arranged in the spray liquid unit 3.
In a preferred embodiment, the purification system further comprises a first blower 5 for introducing the sulfur-containing organic waste gas into the absorption tower 1, wherein the first blower 5 is communicated with the absorption tower 1.
In a preferred embodiment, the membrane-borne biological deodorization reactor further comprises a second air supply unit 25; the second air supply unit 25 is communicated with the backwashing aeration head 23.
In a preferred embodiment, the second air supply unit 25 comprises a blower 251 and a third pipeline 252, wherein the blower 251 is communicated with the plurality of backwash aeration heads 23 through the third pipeline 252.
In a preferred embodiment, the second air supply unit 25 further includes a third valve 253, and the third valve 253 is disposed on the third pipeline 252.
In a preferred embodiment, as shown in fig. 1 and 2, the reactor body 21 is cylindrical, the membrane-supported biological deodorization reactor further includes a water inlet 26, a water inlet well 27, a water inlet channel 28 and a plurality of water distribution holes 29, the water inlet 26 is disposed on the reactor body 21, the water inlet 26 is communicated with the water inlet well 27, the water inlet channel 28 is disposed around the inner wall of the reactor body, and the water distribution holes 29 are disposed on the water inlet channel 28.
In a preferred embodiment, a horizontally arranged water retaining skirt 213 and a vertically arranged baffle 214 are arranged below the water inlet channel 28, one end of the water retaining skirt 213 is connected with the inner side wall of the reactor body, and a gap is arranged between the other end of the water retaining skirt 213 and the baffle 214 so as to form a water flowing channel. This design does benefit to the water and evenly gets into the reactor body in, does benefit to the subsidence of suspended solid.
In a preferred embodiment, the water inlet 26 is further provided with a water inlet valve 261 and/or a first contaminant detection unit 262.
In a preferred embodiment, the water distribution holes 29 are arranged from sparse to dense in the water flow direction, which is favorable for uniform water distribution.
In a preferred embodiment, the membrane-supported biological deodorization reactor further includes a water outlet 210 and a water outlet well 211, the water outlet well 211 is disposed in the reactor body 21, the water outlet 210 is disposed on the reactor body 21, and the water outlet 210 is communicated with the water outlet well 211.
In a preferred embodiment, the membrane-mounted biological deodorization reactor further comprises a mud outlet well 215 and a mud discharge pipe 216, wherein the mud outlet well 215 is arranged below the water outlet well 211, a mud discharge hole 2151 is formed in the mud outlet well 215, and the mud outlet well 215 is communicated with the mud discharge pipe 216.
In a preferred embodiment, a second pollutant detection unit is further disposed on the water outlet 210.
In a preferred embodiment, the reactor body 21 is cylindrical, and the plurality of membrane modules 22 are disposed in the reactor body 21 in an annular array.
In a preferred embodiment, the membrane modules 22 are arranged from dense to sparse in the radial direction from the periphery of the inlet water to the center of the outlet water, which facilitates efficient degradation of contaminants.
In a preferred embodiment, the first gas supply unit 24 includes an oxygen storage tank 241, a first pipeline 242 and a plurality of second pipelines 243, each second pipeline 243 is communicated with each membrane module 22, and the oxygen storage tank 241 is communicated with the plurality of second pipelines 243 through the first pipeline 242.
In a preferred embodiment, the first air supply unit 24 further includes a first valve 244, and the first valve 244 is disposed on the first pipe 242.
In a preferred embodiment, the first air supply unit 24 further comprises a plurality of second valves 245, and each second valve 245 is disposed on each second pipe 243.
In a preferred embodiment, the membrane-supported biological deodorization reactor further comprises a gas phase discharge port 212, and the gas phase discharge port 212 is disposed at the top of the reactor body 21.
In a preferred embodiment, the carrier membrane in the membrane module 22 is a non-porous hollow fiber membrane.
In a preferred embodiment, the membrane-borne bio-deodorization reactor 2 further comprises a control unit 217, wherein the control unit 217 is in signal connection with at least one selected from the group consisting of the pH detection unit 4, the water inlet valve 261, the first contaminant detection unit 262, the first valve 244, the third valve 253, and the second contaminant detection unit.
Example 1
The purification system of sulfur-containing organic waste gas used in the examples is shown in fig. 1 and fig. 2, and specifically comprises the following steps:
(1) introducing sulfur-containing organic waste gas into an absorption tower through a blower, and absorbing pollutants by using a spraying liquid to realize the transfer of the pollutants from a gas phase to a liquid phase;
(2) adjusting the concentration of pollutants in the effluent waste liquid of the absorption tower to 5mmol/L (sulfydryl), pumping the pollutants and sludge of a secondary sedimentation tank of a sewage treatment plant with 15g/L of VSS into a membrane-carried biological deodorization reactor for membrane hanging, wherein the hydraulic retention time is 24 hours, the oxygen aeration partial pressure is 8psi, and the domestication is completed after 4 days;
(3) pumping the effluent waste liquid of the absorption tower into a membrane-borne biological deodorization reactor, controlling the oxygen pressure to be 10psi, dynamically adjusting the oxygen supply amount according to the concentration of the influent pollutants, increasing the oxygen pressure, wherein the oxygen pressure is 5mmol/L higher per liter, and the control unit controls a corresponding valve to adjust the oxygen supply pressure to be increased by one psi to be maximally 20 psi;
(4) adjusting the hydraulic retention time to 60 min;
(5) monitoring the concentration of pollutants in the effluent water of the membrane reactor, and feeding back and adjusting the oxygen supply: the concentration of sulfur-containing pollutants in the effluent is 10-4-10-3At mmol/L, the supply pressure of oxygen is not changed, and the concentration of sulfur-containing pollutants in the effluent is 10-3-10-2At mmol/L, the supply pressure of oxygen is increased by 2psi, and the concentration of sulfur-containing pollutants in the effluent is 10-2-10-1At mmol/L, the supply pressure of oxygen is increased by 4psi, and the concentration of sulfur-containing pollutants in the effluent is 10-1At-1 mmol/L, the oxygen feed pressure increased by 10 psi.
(6) The flushing intensity of the air flow is controlled to be 20L/(s.m)2) The washing time is 5min, and the frequency is 1 time per month. The amount of pollutants treated by the device reaches 150mol S.m-3·d-1The removal efficiency of sulfur-containing malodorous organic pollutants reaches 98 percent, and the utilization efficiency of oxygen reaches 99 percent.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (8)
1. A purification system of sulfur-containing organic waste gas is characterized by comprising an absorption tower (1) and a membrane-carried biological deodorization reactor (2) which are communicated; the membrane-carried biological deodorization reactor (2) comprises a reactor body (21), a plurality of membrane modules (22), a plurality of back-washing aeration heads (23) and a first air supply unit (24);
the membrane module (22) and the back washing aeration head (23) are arranged in the reactor body (21);
the first gas supply unit (24) is communicated with the membrane module (22); the back washing aeration head (23) is arranged towards the membrane module (22).
2. The system for purifying a sulfur-containing organic waste gas according to claim 1, further comprising at least one of the following technical features:
A1) the absorption tower (1) is provided with a spraying liquid inlet (11), a waste gas inlet (12), a waste liquid outlet (13) and a gas phase outlet (14), the spraying liquid inlet (11) and the gas phase outlet (14) are positioned above the waste gas inlet (12), and the waste liquid outlet (13) is communicated with the membrane-borne biological deodorization reactor (2);
A2) the purification system also comprises a spray liquid unit (3), and the spray liquid unit (3) is communicated with the absorption tower (1);
A3) the purification system also comprises a first air blower (5) used for introducing sulfur-containing organic waste gas into the absorption tower (1), wherein the first air blower (5) is communicated with the absorption tower (1);
A4) the membrane-borne biological deodorization reactor also comprises a second air supply unit (25); the second air supply unit (25) is communicated with the backwashing aeration head (23);
A5) the reactor body (21) is cylindrical, the membrane-supported biological deodorization reactor further comprises a water inlet (26), a water inlet well (27), a water inlet channel (28) and a plurality of water distribution holes (29), the water inlet (26) is arranged on the reactor body (21), the water inlet (26) is communicated with the water inlet well (27), the water inlet channel (28) is arranged on the inner wall of the reactor body in a surrounding mode, and the water distribution holes (29) are arranged on the water inlet channel (28);
A6) the membrane-carried biological deodorization reactor further comprises a water outlet (210) and a water outlet well (211), wherein the water outlet well (211) is arranged in the reactor body (21), the water outlet (210) is arranged on the reactor body (21), and the water outlet (210) is communicated with the water outlet well (211);
A7) the reactor body (21) is cylindrical, and the membrane modules (22) are arranged in the reactor body (21) in an annular array;
A8) the first gas supply unit (24) comprises an oxygen storage tank (241), a first pipeline (242) and a plurality of second pipelines (243), each second pipeline (243) is communicated with each membrane module (22), and the oxygen storage tank (241) is communicated with the plurality of second pipelines (243) through the first pipeline (242);
A9) the membrane-carried biological deodorization reactor also comprises a gas phase discharge port (212), and the gas phase discharge port (212) is arranged at the top of the reactor body (21);
A10) the carrier membrane in the membrane module (22) is a non-porous hollow fiber membrane.
3. The system for purifying sulfur-containing organic waste gas according to claim 2, wherein the characteristic A5) further comprises at least one of the following technical characteristics:
B1) a horizontally arranged water retaining skirt board (213) and a vertically arranged baffle board (214) are arranged below the water inlet channel (28), one end of the water retaining skirt board (213) is connected with the inner side wall of the reactor body, and a gap is arranged between the other end of the water retaining skirt board and the baffle board (214) so as to form a water flowing channel;
B2) the water distribution holes (29) are arranged in a dense mode from sparse to dense along the water flow direction.
4. The system for purifying a sulfur-containing organic waste gas as claimed in claim 2, wherein in feature A6),
the membrane-carried biological deodorization reactor further comprises a mud outlet well (215) and a mud discharge pipe (216), wherein the mud outlet well (215) is arranged below the water outlet well (211), a mud discharge hole (2151) is formed in the mud outlet well (215), and the mud outlet well (215) is communicated with the mud discharge pipe (216).
5. The sulfur-containing organic waste gas purification system according to claim 2, wherein in feature a7), said membrane modules (22) are arranged from dense to sparse in the radial direction from the periphery of the feed water to the center of the discharge water.
6. The system for purifying sulfur-containing organic waste gas according to claim 2, wherein the characteristic A8) further comprises at least one of the following technical characteristics:
C1) the first air supply unit (24) further comprises a first valve (244), the first valve (244) being arranged on the first pipeline (242);
C2) the first air supply unit (24) further comprises a plurality of second valves (245), and each second valve (245) is arranged on each second pipeline (243).
7. The system for purifying a sulfur-containing organic waste gas according to claim 2, further comprising at least one of the following technical features:
D1) the characteristic A2) further comprises a pH detection unit (4), wherein the pH detection unit (4) is arranged in the spray liquid unit (3);
D2) feature a4), the second air supply unit (25) comprises a blower (251) and a third pipeline (252), the blower (251) is communicated with the plurality of backwashing aeration heads (23) through the third pipeline (252); the second air supply unit (25) further comprises a third valve (253), and the third valve (253) is arranged on the third pipeline (252);
D3) in feature a5), a second pollutant detection unit is further arranged on the water outlet (210);
D4) in the characteristic A5), a water inlet valve (261) and/or a first pollutant detection unit (262) are/is further arranged on the water inlet (26);
D5) feature A8), the first air supply unit (24) further comprising a first valve (244), the first valve (244) being disposed on the first duct (242).
8. The system for purifying sulfur-containing organic waste gas according to claim 7, wherein said membrane-borne biological deodorization reactor (2) further comprises a control unit (217), and said control unit (217) is in signal connection with at least one selected from the group consisting of said pH detection unit (4), said water inlet valve (261), said first contaminant detection unit (262), said first valve (244), said third valve (253), and a second contaminant detection unit.
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