CN112275089A - Effluent disposal polluted gas purification system - Google Patents

Abstract

The invention discloses a wastewater treatment polluted gas purification system, wherein a polluted gas collecting device comprises a collecting mechanism, a collecting pipeline and at least two adsorption towers, wherein the collecting mechanism comprises a collecting cover and an air extracting fan, the air extracting fan is arranged in the collecting cover, one end of the collecting pipeline is connected with the collecting cover, the other end of the collecting pipeline is communicated with the adsorption towers, the adsorption towers are arranged in parallel, and adsorption filler is arranged in the adsorption towers; the polluted gas purifying device comprises a suction mechanism, a suction pipeline and a purifying mechanism, wherein the suction mechanism is connected with each adsorption tower through the suction pipeline, the purifying mechanism comprises a purifying pipeline and a purifying box, the two ends of the purifying pipeline are respectively connected with the suction mechanism and the purifying box, and a purifying agent for purifying ammonia gas and hydrogen sulfide is arranged in the purifying box. The waste water treatment polluted gas purification system can collect and purify polluted gas generated in the waste water treatment process, is easy to realize, and can effectively purify the polluted gas generated in the cigarette production waste water treatment process.

Description

A waste water treatment polluted gas purification system

technical field

The invention relates to the field of sewage treatment, and more particularly, to a sewage treatment polluted gas purification system.

Background technique

In the production process of cigarette factories, a large amount of production wastewater will be produced, and the production wastewater mainly comes from the three process sections of silk making, flavoring, and rolling. In the silk-making process section, the wastewater mainly includes the water for the process of expanding cut tobacco and the process of washing the stems. The waste water in the silk-making process section is characterized by a small amount of water, a high concentration, and contains alkaloids and phenols in tobacco leaves, and the temperature of the wastewater is relatively high. High, about 60℃-70℃. In the flavoring and feeding process section, the wastewater contains flavors and essences added to cigarettes, and also contains oil, resulting in high pollutant concentration and high chroma in the wastewater. At the same time, the wastewater contains many alkaloids, phenols, alcohols, etc. refractory organic matter. In the coiling and packaging process section, the waste water contains the turbid white glue sewage formed by the binder used in the middle stage of production, and the COD is about 2000mg/L.

In the existing production wastewater treatment process, a large amount of polluted gas will be generated in the treatment links such as water collecting well, aeration tank, and sludge concentration tank. The main components of the polluted gas include ammonia gas and hydrogen sulfide. The direct discharge of these polluted gases into the atmosphere will seriously affect the surrounding environment and the physical and mental health of equipment operation and maintenance personnel.

Therefore, how to provide a system that can effectively purify the polluted gas generated during the treatment of cigarette production wastewater has become an urgent technical problem to be solved in the art.

SUMMARY OF THE INVENTION

One object of the present invention is to provide a new technology solution for a waste water treatment polluted gas purification system that can effectively purify the polluted gas generated in the process of cigarette production wastewater treatment.

According to a first aspect of the present invention, a waste water treatment polluted gas purification system is provided.

The wastewater treatment polluted gas purification system includes a polluted gas collection device and a polluted gas purification device; wherein,

The polluted gas collection device includes a collection mechanism, a collection pipeline and at least two adsorption towers. The collection mechanism includes a collection cover and a suction fan. The suction fan is installed in the collection cover, and the suction fan is installed in the collection cover. It is configured to draw polluted gas into the collection cover, one end of the collection pipe is connected to the collection cover, the other end of the collection pipe is communicated with the adsorption tower, and each of the adsorption The towers are arranged in parallel, and the adsorption tower is provided with adsorption packing;

The polluted gas purification device includes a suction mechanism, a suction pipe and a purification mechanism, the suction mechanism is connected with each of the adsorption towers through the suction pipe, and the suction mechanism is configured to The polluted gas adsorbed by the adsorption tower is extracted. The purification mechanism includes a purification pipeline and a purification box. The two ends of the purification pipeline are respectively connected with the suction mechanism and the purification box. A purifying agent for purifying ammonia and hydrogen sulfide.

Optionally, the collection pipe is connected to the bottom of each adsorption tower, and the suction pipe is connected to the top of each adsorption tower.

Optionally, the collection pipeline is also provided with a plurality of control valves corresponding to the adsorption towers one-to-one, and the control valves are set to control the intake flow of the intake side of each adsorption tower. .

Optionally, the total amount of polluted gas entering the adsorption tower is less than the total amount of polluted gas entering the collection side of the collection cover.

Optionally, the total amount of polluted gas entering the adsorption tower is at least 90% of the total amount of polluted gas entering the collection side of the collecting hood.

Optionally, the adsorption towers have a cylindrical structure, and the central axes of the adsorption towers are parallel and not collinear.

Optionally, each of the adsorption towers is gradually separated from the suction mechanism from top to bottom.

Optionally, the purification mechanism further includes an exhaust pipe, one end of the exhaust pipe is communicated with the purification box, the other end of the exhaust pipe is communicated with the atmosphere, and the exhaust pipe is communicated with the atmosphere. One end has a rain cover.

Optionally, an exhaust fan is further provided in the exhaust duct.

Optionally, the purifying agent is an aqueous solution comprising sodium hydroxide and sodium hypochlorite, and the end of the purifying pipeline connected to the purifying box is located below the liquid level of the purifying agent.

The wastewater treatment polluted gas purification system of the present disclosure can collect and purify the polluted gas generated in the wastewater treatment process, which is easy to implement, and can effectively purify the polluted gas generated in the cigarette production wastewater treatment process.

Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention.

FIG. 1 is a schematic structural diagram of an embodiment of a wastewater treatment polluted gas purification system of the present disclosure.

The figure is marked as follows:

Collection hood-1, extraction fan-2, collection pipeline-3, control valve-30, adsorption tower-4, suction mechanism-5, suction pipeline-6, purification pipeline-7, purification box-8, purification agent -80, Exhaust Duct -9, Rain Cover -91, Exhaust Fan -92.

Detailed ways

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods, and apparatus should be considered part of the specification.

In all examples shown and discussed herein, any specific values should be construed as illustrative only and not limiting. Accordingly, other instances of the exemplary embodiment may have different values.

As shown in FIG. 1 , the wastewater treatment polluted gas purification system of the present disclosure includes a polluted gas collection device and a polluted gas purification device.

The polluted gas collection device includes a collection mechanism, a collection pipeline 3 and at least two adsorption towers 4 . The collection mechanism includes a collection cover 1 and a suction fan 2 . The suction fan 2 is installed in the collection cover 1 , and the suction fan 2 can be used to draw polluted gas into the collection cover 1 . In specific implementation, in order to improve the collection efficiency of polluted gas, the collection cover 1 may have a horn-like structure, and the exhaust fan 2 is located at the end of the collection cover 1 with a smaller diameter.

One end of the collection pipe 3 is connected with the collection cover 1 , and the other end of the collection pipe 3 is communicated with the adsorption tower 4 , and the adsorption towers 4 are arranged in parallel. The adsorption tower 4 is provided with adsorption packing. The adsorption packing in the adsorption tower 4 is usually a desorbable packing type, eg, a ceramic particle packing. The adsorption packing can adsorb the polluted gas, and desorb the ammonia gas and hydrogen sulfide gas in the adsorbed polluted gas.

The polluted gas purification device includes a suction mechanism 5, a suction pipe 6 and a purification mechanism. The suction mechanism 5 is connected with each adsorption tower 4 through a suction pipe 6 , and the suction mechanism 5 can be used to extract the polluted gas adsorbed by the adsorption tower 4 . The suction mechanism 5 may be, for example, an air compressor. The purification mechanism includes a purification pipeline 7 and a purification box 8 . Both ends of the purification pipe 7 are respectively connected with the suction mechanism 5 and the purification box 8 . The purification box 8 is provided with a purifying agent 80 for purifying ammonia gas and hydrogen sulfide. The scavenger 80 may be a solid scavenger and/or a liquid scavenger.

The working process of the wastewater treatment polluted gas purification system of the present disclosure is as follows:

The exhaust fan 2 draws the polluted gas generated in the wastewater treatment process from the collection cover 1 into the collection pipe 3, and the collection pipe 3 guides the polluted gas into the adsorption tower 4, and the adsorption packing in the adsorption tower 4 adsorbs the polluted gas. Next, under the suction effect of the suction mechanism 5 , the polluted gas adsorbed by the adsorption tower 4 enters the suction pipe 6 and enters the purification box 8 through the purification pipe 7 . The polluted gas reacts with the purifying agent 80 in the purification box 8, thereby realizing the purification of the polluted gas.

The wastewater treatment polluted gas purification system of the present disclosure improves the purification efficiency of the polluted gas in the wastewater treatment polluted gas purification system by first adsorbing the polluted gas and then desorbing the polluted gas, avoiding the escape of untreated polluted gas.

The wastewater treatment polluted gas purification system of the present disclosure can collect and purify the polluted gas generated in the wastewater treatment process, which is easy to implement, and can effectively purify the polluted gas generated in the cigarette production wastewater treatment process.

In an embodiment of the wastewater treatment polluted gas purification system of the present disclosure, the collection pipe 3 is connected to the bottom of each adsorption tower 4 , and the suction pipe 6 is connected to the top of each adsorption tower 4 . In this way, the polluted gas enters the adsorption tower 4 from the bottom of the adsorption tower 4 and leaves from the top of the adsorption tower 4 , effectively ensuring the sufficient contact between the polluted gas and the adsorption packing in the adsorption tower 4 .

In an embodiment of the wastewater treatment polluted gas purification system of the present disclosure, a plurality of control valves 30 which are arranged in a one-to-one correspondence with the adsorption towers 4 are further provided in the collection pipeline 3 . The control valve 30 can be used to control the intake flow of the intake side of each adsorption tower 4 . The control valve 30 may be, for example, a solenoid valve. By controlling the valve 30 , the amount of polluted gas entering each adsorption tower 4 can be controlled, so that the adsorption amount of the adsorption tower 4 can be controlled more effectively. In specific implementation, the control valve 30 corresponding to each adsorption tower 4 can be independently controlled.

Further, the total amount of the polluted gas entering the adsorption tower 4 is less than the total amount of the polluted gas entering the collection side of the collection cover 1 . Under the suction effect of the suction mechanism 5 on the adsorption tower 4 , this arrangement facilitates the formation of negative pressure between the collection hood 1 and the adsorption tower 4 , thereby improving the collection efficiency of the collection hood 1 .

Further, the total amount of the polluted gas entering the adsorption tower 4 is at least 90% of the total amount of the polluted gas entering the collecting side of the collecting hood 1 .

Further, the adsorption towers 4 have a cylindrical structure, and the central axes of the adsorption towers 4 are parallel and not collinear. The central axes of each adsorption tower 4 are parallel and not collinear, so that the distances between different adsorption towers 4 and the suction mechanism 5 are different, thereby effectively improving the suction efficiency of the suction mechanism 5 .

Further, each adsorption tower 4 gradually moves away from the suction mechanism 5 from top to bottom.

In an embodiment of the wastewater treatment polluted gas purification system of the present disclosure, the purification mechanism further includes an exhaust pipe 9 . One end of the exhaust duct 9 communicates with the purification box 8 , the other end of the exhaust duct 9 communicates with the atmosphere, and the end of the exhaust duct 9 communicated with the atmosphere is provided with a rain cover 91 . The exhaust pipe 9 can discharge the purified gas in the purification box 8 . The rain cover 91 can effectively prevent rainwater and sundries from entering the purification box 8 .

Further, an exhaust fan 92 is also provided in the exhaust duct 9 . The arrangement of the exhaust fan 92 is beneficial to discharge the purified gas in the purification box 8 out of the purification box 8 more quickly.

Further, the purifying agent 80 is an aqueous solution including sodium hydroxide and sodium hypochlorite. The end of the purification pipe 7 connected to the purification tank 8 is located below the liquid level of the purification agent 80 .

The sodium hydroxide in the purifying agent 80 is a strong base, which can quickly react with hydrogen sulfide gas, and ensures the stability of the sodium hypochlorite in the purifying agent 80 . The chemical formula for the reaction of scavenger 80 with hydrogen sulfide is as follows:

2NaOH+H ₂ S=2H ₂ O+Na ₂ S;

Na2S ₊ 4NaClO= _{Na2SO4 +} 4NaCl.

The ammonia gas in the polluted gas can be dissolved in the cleaning agent 80 .

Although some specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are provided for illustration only and not for the purpose of limiting the scope of the present invention. Those skilled in the art will appreciate that modifications may be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the invention is defined by the appended claims.

Claims (10)

1. A waste water treatment polluted gas purification system, characterized in that, comprising a polluted gas collection device and a polluted gas purification device; wherein, The polluted gas collection device includes a collection mechanism, a collection pipeline and at least two adsorption towers. The collection mechanism includes a collection cover and a suction fan. The suction fan is installed in the collection cover, and the suction fan is installed in the collection cover. It is configured to draw polluted gas into the collection cover, one end of the collection pipe is connected to the collection cover, the other end of the collection pipe is communicated with the adsorption tower, and each of the adsorption The towers are arranged in parallel, and the adsorption tower is provided with adsorption packing; The polluted gas purification device includes a suction mechanism, a suction pipe and a purification mechanism, the suction mechanism is connected with each of the adsorption towers through the suction pipe, and the suction mechanism is configured to The polluted gas adsorbed by the adsorption tower is extracted. The purification mechanism includes a purification pipeline and a purification box. The two ends of the purification pipeline are respectively connected with the suction mechanism and the purification box. A purifying agent for purifying ammonia and hydrogen sulfide. 2 . The waste water treatment polluted gas purification system according to claim 1 , wherein the collection pipe is connected to the bottom of each adsorption tower, and the suction pipe is connected to the top of each adsorption tower. 3 . . 3 . The polluted gas purification system for wastewater treatment according to claim 1 , wherein a plurality of control valves corresponding to the adsorption towers are provided in the collection pipeline, and the control valves are set as 3 . It is used to control the intake air flow on the intake side of each of the adsorption towers. 4 . The polluted gas purification system for wastewater treatment according to claim 3 , wherein the total amount of polluted gas entering the adsorption tower is less than the total amount of polluted gas entering the collection side of the collection cover. 5 . 5 . The polluted gas purification system for wastewater treatment according to claim 4 , wherein the total amount of polluted gas entering the adsorption tower is at least 90% of the total amount of polluted gas entering the collection side of the collecting hood. 6 . . 6 . The polluted gas purification system for wastewater treatment according to claim 4 , wherein the adsorption towers have a cylindrical structure, and the central axes of the adsorption towers are parallel and not collinear. 7 . 7 . The polluted gas purification system for wastewater treatment according to claim 6 , wherein each of the adsorption towers gradually moves away from the suction mechanism from top to bottom. 8 . 8 . The polluted gas purification system for wastewater treatment according to claim 1 , wherein the purification mechanism further comprises an exhaust pipe, and one end of the exhaust pipe is communicated with the purification box. 9 . , the other end of the exhaust duct is communicated with the atmosphere, and the end of the exhaust duct communicated with the atmosphere is provided with a rain cover. 9 . The polluted gas purification system for wastewater treatment according to claim 8 , wherein an exhaust fan is further provided in the exhaust duct. 10 . 10. The waste water treatment polluted gas purification system according to claim 8, wherein the purifying agent is an aqueous solution comprising sodium hydroxide and sodium hypochlorite, and one end of the purification pipeline connected to the purification box is located in the below the liquid level of the purifier.

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