CN205598960U - Be used for algae moisture stench waste gas pollution control and treatment device leaving from station - Google Patents

Abstract

The utility model discloses a device specially used for the treatment of malodorous waste gas in an algae-water separation station, which comprises a malodorous production source mechanism arranged in sequence, a gas collecting device for collecting the malodorous gas generated by the malodorous production source mechanism, and a device for treating the malodorous gas. The low-temperature plasma synergistic catalytic adsorption complete set, as well as the induced draft fan that can provide power and the discharge tower used to discharge standard gases. In the utility model, the gas degraded by low-temperature plasma enters the catalytic adsorption reaction zone, where the adsorbent selectively adsorbs incompletely degraded organic molecules, and high-energy molecules that have not completely reacted in the low-temperature plasma, and under the action of the catalyst, further A chemical reaction occurs to achieve the purpose of degrading pollutants.

Description

A kind of malodorous waste gas treatment device for algae water separation station

technical field

The utility model relates to the technical field of environmental engineering and waste gas purification, in particular to a device for treating malodorous waste gas in an algae-water separation station.

Background technique

Now freshwater lakes have very high environmental requirements, and their water quality is closely related to the production and life of tens of millions of residents in the basin around the lake. It is an important water source for industrial and agricultural production and people's lives in the area along the lake. However, in recent years, due to the fertilizer residues from the farmland around the lake and domestic sewage and industrial wastewater from cities around the Chaohu Lake Basin flowing into the lake, the eutrophication of many large rivers and lakes has continued to intensify, leading to large-scale outbreaks of blue-green algae and greatly destroying freshwater. Ecology of the lake. In order to solve the problem of cyanobacteria, algae water separation technology was introduced, and algae water separation stations were established along the coasts of many large lakes. However, during the separation of algae and water, a large amount of malodorous exhaust gas will be generated, which will affect the surrounding ecological environment.

The specific process flow of the algae water separation station is as follows: send the algae pulp salvaged by the shovel suction salvage ship or fixed salvage point to the algal pulp peak regulation pool through the pipeline, send the algae water that has passed through the adjustment pool to the degassing equipment, and after degassing The cyanobacteria algae pulp is added to the flocculation to make it settle; the algae residue deposited to a certain concentration is sent to the dehydration equipment for dehydration, and the algae mud is obtained and sent to the algae mud pool; the overlying water after the algae pulp is deposited is sent to the air flotation equipment , the treated algae-free water meets the standard and is discharged into the Pai River Estuary, the scum is sent to the dehydration equipment for dehydration, and the obtained algae mud is also sent to the algae mud tank, and finally sent to the sanitation vehicle, and transported to the landfill for harmless landfill . The main sources of gas pollution in this project are peak shaving pools, air flotation pools, sedimentation pools, algae mud pools, algae residue algae pulp pools and dehydrator return pools.

Normally, algae will not produce too much foul-smelling exhaust gas, and only after death will it produce a foul-smelling smell. The malodorous waste gas in the algal water separation port has complex components, including malodorous VOCs, most of which are insoluble in water, and some are toxic and carcinogenic. At present, there are activated carbon adsorption, biodegradation, chemical absorption and combustion methods to treat malodorous gases. Although these technologies have relatively high treatment effects, the operating conditions are relatively complicated, the operation and maintenance costs are high, and secondary pollution is likely to occur.

Utility model content

In order to solve the above technical problems, the utility model provides a malodorous waste gas treatment device for algae water separation station.

In order to achieve the above technical purpose, the utility model takes the following technical solutions:

A device specially used for the treatment of malodorous waste gas in the algae-water separation station, including the malodorous production source mechanism arranged in sequence, the gas collecting device used to collect the malodorous gas generated by the malodorous production source mechanism, and the low-temperature plasma synergy used to treat the malodorous gas. Catalytic adsorption complete set, as well as the induced draft fan that can provide power and the discharge tower used to discharge standard gas.

Further, the source mechanism of the stench is a sedimentation tank, an air flotation tank, an algae mud algae slurry pool, a reuse pool in the algae mud dehydration area, an algae mud pool, and a peak regulation pool; the gas collection device passes the malodorous waste gas through The gas collection hood is made into a closed space, and the top of the gas collection hood is connected to the inlet end of the low-temperature plasma cooperative catalytic adsorption complete set through a pipeline, and the gas outlet of the low-temperature plasma cooperative catalytic adsorption complete set is connected to the inlet The inlet end of the fan is connected through a pipeline, and the outlet end of the induced draft fan is also connected with the inlet end of the discharge tower through a pipeline.

Further, the gas collecting hood is made of FRP, glass or plexiglass, and the pipeline is made of FRP, carbon steel or PP.

Further, the low-temperature plasma coordinated catalytic adsorption complete set includes an air inlet, a pretreatment area, a low-temperature plasma discharge area, a coordinated catalytic adsorption reaction area and a gas outlet arranged in sequence.

Further, the low-temperature plasma discharge area adopts a grid-shaped discharge structure, and the low-temperature plasma discharge area is controlled by a high-frequency high-voltage power supply. The low-temperature plasma coordinated catalytic adsorption complete set also includes a power system and a control system, The control system controls the power supply system, and the number of power supplies in the power supply system is the same as the number of discharge modules in the grid discharge structure.

Further, the synergistic catalytic adsorption reaction zone uses a noble metal catalyst, the adsorbent is attached and fixed on the adsorbent carrier, the catalyst adopts a honeycomb modular structure, and the adsorbent includes activated carbon, activated alumina, molecular sieve or silica gel.

The technical features and effects of the utility model are as follows: through the above collection method, the collected exhaust gas is collected through the pipeline and then introduced into the low-temperature plasma cooperative catalytic adsorption complete set of devices, a thermocouple is installed on the pipeline for gas temperature measurement and feedback, and a pressure sensor feedback pipeline is installed For internal pressure changes, a flow meter is installed to reflect the amount of exhaust gas treatment, and a concentration sensor is installed to record the change of exhaust gas concentration during the operation of the equipment, and to adjust the discharge output power in real time through the concentration change. After the exhaust gas enters the low-temperature plasma synergistic catalytic adsorption device through the pipeline, it first passes through the pretreatment system, which is mainly composed of PP screen or fiber cotton and other filter materials, mainly for dust removal and dehumidification. The exhaust gas treated by the pretreatment system enters the low-temperature plasma discharge area. The low-temperature plasma discharge adopts a double dielectric barrier discharge mode and a grid-like discharge structure to form a stable, uniform and efficient low-temperature plasma inside the low-temperature plasma discharge area. The high-energy particles in the body directly degrade organic molecules and odorous gas molecules, destroy and reorganize molecular bonds, and form harmless small molecules. The gas degraded by low-temperature plasma enters the catalytic adsorption reaction zone, where the adsorbent selectively adsorbs incompletely degraded organic molecules and incompletely reacted high-energy molecules in the low-temperature plasma, and further chemical reactions occur under the action of the catalyst , to achieve the purpose of degrading pollutants. After low-temperature plasma cooperative catalytic adsorption and degradation, the gas can be discharged up to the standard, and discharged through the induced draft fan and the discharge tower. The whole set of equipment is controlled by PLC, which can detect the concentration, pressure and flow of the gas to be processed in the pipeline, realize fully automatic operation, one-button start and stop operation, and easy operation. Therefore, the operating conditions are relatively simple, the operation and maintenance costs are low, and secondary pollution is not easy to occur.

Description of drawings

Fig. 1 is a structural representation of the utility model.

In the figure: 1. Odor production source mechanism; 2. Gas collection hood; 3. Pipeline; 4. Pretreatment area; 5. Low temperature plasma discharge area; 6. Cooperative catalytic adsorption reaction area; 7. Induced fan; 8. Emission Tower; 9. Gas collecting device; 10. Low temperature plasma synergistic catalytic adsorption complete set; 11. Air inlet; 12. Gas outlet.

detailed description

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

Please refer to Fig. 1, the utility model provides a device specially used for the treatment of the malodorous waste gas of the aforementioned algae-water separation station, including the malodorous production source mechanism 1 arranged in sequence, and the gas collecting device for collecting the malodorous gas generated by the malodorous production source mechanism 9. A low-temperature plasma synergistic catalytic adsorption package 10 for treating malodorous gases, an induced draft fan 7 capable of providing power, and a discharge tower 8 for discharging standard gases.

Please refer to Fig. 1, preferably, the malodorous source mechanism 1 is a sedimentation tank, an air flotation tank, an algae mud algae slurry pool, a reuse pool in an algae mud dehydration area, an algae mud pool, and a peak regulation pool; the gas collecting device 9 is a The malodorous exhaust gas is made into a closed space through the gas collection hood 2, and the malodorous exhaust gas is collected through the gas collection system; and the top of the gas collection hood 2 and the inlet end of the low-temperature plasma cooperative catalytic adsorption complete set Pipeline 3 is connected, and the outlet end of low-temperature plasma cooperative catalytic adsorption complete set 10 is connected with the inlet end of induced draft fan 7 through pipeline 3 , and the outlet end of induced draft fan 7 is also connected with the inlet end of discharge tower 8 through pipeline 3 .

Please refer to FIG. 1 , preferably, the gas collecting hood 2 is made of FRP, glass, or plexiglass, and the pipeline 3 is made of FRP, carbon steel or PP.

Please refer to FIG. 1 , preferably, the low-temperature plasma coordinated catalytic adsorption complete device 10 includes an air inlet 11 , a pretreatment area 4 , a low-temperature plasma discharge area 5 , a coordinated catalytic adsorption reaction area 6 and a gas outlet 12 .

Please refer to Figure 1. Preferably, the low-temperature plasma discharge area 5 adopts a grid-shaped discharge structure. The low-temperature plasma discharge area 5 controls the discharge through a high-frequency and high-voltage power supply. It has an independent power control system and a complete set of low-temperature plasma synergistic catalytic adsorption devices. 10 also includes a power system and a control system, the control system controls the power system, and the number of power sources in the power system is the same as the number of discharge modules in the grid discharge structure.

Please refer to Fig. 1, preferably, synergistic catalytic adsorption reaction zone 5 adopts noble metal catalyst, and adsorbent is attached and fixed on the adsorbent carrier, and catalyst adopts honeycomb modular structure, and adsorbent includes activated carbon, activated alumina, molecular sieve or silica gel, The finished module is fixedly installed inside the equipment, and the electronic control system includes the control part of the whole system and the flow, pressure, temperature and concentration monitoring of the malodorous exhaust gas inside the pipeline.

Odor generation sources 1 mainly include sedimentation tanks, air flotation tanks, algae mud and algae slurry pools, reuse pools in the algae mud dehydration area, algae mud pools, and peak-shaving pools, some of which have been made into closed spaces to form gas collection hoods It is necessary to leave an outlet hole on the top of the confined space, directly on the pipeline 3, and if it is not made into a gas collection hood, it needs to be a gas collection hood 2 for the collection of malodorous gases.

The collected exhaust gas is collected through the pipeline 3 and then introduced into the complete set of low-temperature plasma synergistic catalytic adsorption device. A thermocouple is installed on the pipeline 3 for gas temperature measurement and feedback, a pressure sensor is installed to feedback the internal pressure change of the pipeline 3, and a flow meter is installed to reflect the waste gas treatment capacity. And install a concentration sensor to record the change of exhaust gas concentration during the operation of the equipment, and adjust the discharge output power in real time through the concentration change.

After the exhaust gas enters the low-temperature plasma cooperative catalytic adsorption complete set through the pipeline 3, it first passes through the pretreatment system 4, which is mainly composed of filter materials such as PP screen or fiber cotton, mainly for dust removal and dehumidification.

The exhaust gas treated by the pretreatment system 4 enters the low-temperature plasma discharge area 5. The low-temperature plasma discharge adopts a double dielectric barrier discharge mode and a grid-shaped discharge structure to form a stable, uniform, and efficient low-temperature plasma inside the low-temperature plasma discharge area 5. The high-energy particles in the plasma directly degrade the organic molecules and the gas molecules that generate the odor, destroy and reorganize the molecular bonds, and form harmless small molecules.

The gas degraded by the low-temperature plasma enters the catalytic adsorption reaction zone 6, where the adsorbent selectively adsorbs incompletely degraded organic molecules and high-energy molecules that have not completely reacted in the low-temperature plasma. Under the action of the catalyst, further chemical reactions occur. reaction to achieve the purpose of degrading pollutants.

After low-temperature plasma cooperative catalytic adsorption and degradation, the gas can be discharged up to the standard, and the gas is discharged through the induced draft fan 7 and the discharge tower 8 .

The whole set of equipment is controlled by PLC, which can detect the concentration, pressure and flow of the gas to be processed in the pipeline 3, realize fully automatic operation, one-button start and stop operation, and easy operation;

Therefore, the operating conditions are relatively simple, the operation and maintenance costs are low, and secondary pollution is not easy to occur.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (6)

1. the device administered for algae moisture foul waste gas leaving from station, it is characterised in that: include the stench that sets gradually and produce source mechanism (1), produce source mechanism and produce the gas collecting apparatus (9) of foul gas, for processing low-temperature plasma synergistic catalytic adsorption complexes (10) of foul gas and the air-introduced machine (7) of power can be provided and for the discharge tower (8) of discharge standard gas for collecting stench.

A kind of device administered for algae moisture foul waste gas leaving from station the most according to claim 1, it is characterised in that: it is sedimentation tank, flotation tank, algae mud algae stock tank, the reuse pool of algae mud watering area, algae mud sump and peak regulation pool that described stench produces source mechanism (1)；Described gas collecting apparatus (9) is that foul waste gas is made confined space by gas skirt (2), and the top of gas skirt (2) is connected by pipeline (3) with the inlet end of described low-temperature plasma synergistic catalytic adsorption complexes (10), the outlet side of described low-temperature plasma synergistic catalytic adsorption complexes (10) is connected by pipeline (3) with the inlet end of described air-introduced machine (7), and the outlet side of described air-introduced machine (7) is connected also by pipeline (3) with the inlet end of described discharge tower (8).

A kind of device administered for algae moisture foul waste gas leaving from station the most according to claim 2, it is characterized in that: described gas skirt (2) uses fiberglass, glass, lucite material, described pipeline (3) to use fiberglass, carbon steel or PP material.

A kind of device administered for algae moisture foul waste gas leaving from station the most according to claim 1, it is characterised in that: air inlet (11) that described low-temperature plasma synergistic catalytic adsorption complexes (10) includes setting gradually, pretreating zone (4), discharge of plasma in low temperature district (5), concerted catalysis adsorption reaction district (6) and gas outlet (12).

A kind of device administered for algae moisture foul waste gas leaving from station the most according to claim 4, it is characterized in that: described discharge of plasma in low temperature district (5) is to use palisade discharging structure, described discharge of plasma in low temperature district (5) controls electric discharge by high-frequency and high-voltage power supply, described low-temperature plasma synergistic catalytic adsorption complexes (10) also includes power-supply system and control system, described control system controls power-supply system, and the number of power sources of described power-supply system is identical with the discharge module quantity of palisade discharging structure.

A kind of device administered for algae moisture foul waste gas leaving from station the most according to claim 4, it is characterized in that: described concerted catalysis adsorption reaction district (6) is to use noble metal catalyst, adsorbent is attached to fixed on adsorbing agent carrier, described catalyst uses cellular modular construction, and described adsorbent includes activated carbon, activated alumina, molecular sieve or silica gel.