A biological treatment system for organic waste gas scrubbing effluent
The integrated organic waste gas scrubbing and biological wastewater treatment system utilizes the synergistic effect of high-pressure atomizing nozzles, hollow sphere packing layers, microporous aeration discs, and suspended biological packing materials to solve the problems of large footprint, high energy consumption, and secondary pollution associated with traditional systems, achieving efficient pollutant removal and resource recycling.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG RUIJING ENERGY ENVIRONMENTAL PROTECTION TECH CO LTD
- Filing Date
- 2025-07-22
- Publication Date
- 2026-06-26
AI Technical Summary
Traditional organic waste gas and wastewater treatment systems occupy a large area, consume a lot of energy, require additional chemical agents, and have low resource utilization. They also lack a synergistic treatment mechanism, resulting in high operating costs and a high risk of secondary pollution.
An integrated organic waste gas scrubbing and wastewater biological treatment system is designed, including a waste gas scrubbing tower, a wastewater biological treatment system, and a recycling system. Through the synergistic effect of high-pressure atomizing nozzles, hollow spherical packing layers, microporous aeration discs, and suspended biological packing materials, the system achieves simultaneous purification of waste gas and wastewater and recycling of water resources.
It achieves efficient and synergistic removal of pollutants, reduces operating costs, avoids secondary pollution, improves resource utilization, and forms a compact and efficient closed-loop treatment mode.
Smart Images
Figure CN224411532U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of environmental protection equipment technology, and in particular to a biological treatment system for organic waste gas washing wastewater. Background Technology
[0002] In the field of industrial organic waste gas treatment, traditional processes typically employ waste gas scrubbing towers for pretreatment, using spraying to absorb organic pollutants from the waste gas. The resulting wastewater is then transported to a separate wastewater treatment facility for further processing. This separate operation mode has the following significant drawbacks:
[0003] (1) The equipment occupies a large area and requires separate waste gas treatment area and wastewater treatment area, resulting in low land resource utilization;
[0004] (2) The energy consumption is high. The exhaust gas scrubbing and sewage treatment systems operate independently and require separate power equipment, resulting in high operating costs.
[0005] (3) Additional chemical agents (such as flocculants, oxidants, etc.) need to be added during the treatment of washing wastewater, which not only increases the treatment cost, but also easily produces sludge or wastewater containing chemical residues, leading to secondary pollution;
[0006] (4) The organic pollutants in the waste gas and wastewater have not formed a synergistic treatment mechanism, resulting in low resource recycling rate, which does not conform to the circular economy concept of "treating waste with waste". Utility Model Content
[0007] In order to overcome the above-mentioned shortcomings of the prior art, this utility model provides a biological treatment system for organic waste gas scrubbing wastewater. It aims to provide an integrated system that can organically combine waste gas scrubbing and wastewater biological treatment. By constructing a closed-loop system of "waste gas purification - wastewater degradation - water resource recycling", it can achieve efficient and synergistic removal of pollutants and recycling of resources.
[0008] The technical solution adopted by this utility model to solve its technical problem is: a biological treatment system for organic waste gas scrubbing wastewater, including a waste gas scrubbing tower, a wastewater biological treatment system and a recycling system. The waste gas scrubbing tower is provided with a waste gas inlet and a drain outlet at the bottom, and a purified gas outlet at the top. The interior of the waste gas scrubbing tower is provided with a high-pressure atomizing nozzle and a hollow ball packing layer. The wastewater biological treatment system includes a wastewater equalization tank, a biological reaction unit, a sedimentation tank and a clear water tank connected in sequence. The drain outlet at the bottom of the waste gas scrubbing tower is connected to the wastewater equalization tank, and the clear water tank is connected to the high-pressure atomizing nozzle of the waste gas scrubbing tower through the recycling system.
[0009] As a further improvement of this utility model: the high-pressure atomizing nozzle and the hollow sphere packing layer are alternately arranged inside the waste gas scrubbing tower from top to bottom.
[0010] As a further improvement of this utility model: the bioreactor unit is provided with a microporous aeration disc and a suspended biological packing material inside.
[0011] As a further improvement of this utility model: the sewage equalization tank is connected to a lift pump, and the sewage equalization tank is connected to the biological reaction unit through the lift pump.
[0012] As a further improvement of this utility model: the recycling system includes a recycled water pump, a constant pressure tank and a pressure sensor. The clear water tank is connected to the high-pressure atomizing nozzle of the exhaust gas scrubbing tower through the recycled water pump. The constant pressure tank is connected to the recycled water pump. The pressure sensor is installed between the constant pressure tank and the recycled water pump.
[0013] As a further improvement of this utility model: the hollow sphere packing layer is filled with polyethylene hollow spheres, and a high-pressure atomizing nozzle is provided between two adjacent sets of hollow sphere packing layers.
[0014] As a further improvement of this utility model: the suspended biological packing material is a polyethylene porous carrier packing layer.
[0015] As a further improvement of this utility model, the filling rate of the suspended biological packing is 30%-50%.
[0016] As a further improvement of this utility model: the microporous aeration disc is laid at the bottom of the bioreactor unit, and the suspended biological packing is placed above the microporous aeration disc.
[0017] Compared with the prior art, the beneficial effects of this utility model are:
[0018] 1. This utility model organically combines waste gas scrubbing with biological wastewater treatment to construct a closed-loop system of "waste gas purification - wastewater degradation - water resource recycling", thereby achieving efficient and synergistic removal of pollutants and recycling of resources.
[0019] 2. The biological treatment system of this utility model has the advantages of compact structure, no need for external chemical agents, and simultaneous degradation of organic matter in waste gas and sewage. Through the coordinated design of sewage biological treatment system and recycling system, it realizes the efficient recycling mode of "treating waste with waste", reduces operating costs and improves pollutant removal efficiency. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the structure of this utility model.
[0021] Figure label:
[0022] 1. Waste gas scrubbing tower; 1-1. Waste gas inlet; 1-2. Purified gas outlet; 1-3. Bottom drain outlet; 1-4. High-pressure atomizing nozzle; 1-5. Hollow sphere packing layer;
[0023] 2. Wastewater biological treatment system; 2-1. Wastewater equalization tank; 2-2. Lift pump; 2-3. Bioreactor unit; 2-4. Microporous aeration disc; 2-5. Suspended biological packing material; 2-6. Sedimentation tank; 2-7. Clear water tank;
[0024] 3. Recycling system; 3-1. Equipped with a recycled water pump; 3-2. Constant pressure tank; 3-3. Pressure sensor. Detailed Implementation
[0025] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. The present invention will now be further described in conjunction with the accompanying drawings and embodiments:
[0026] Please see Figure 1 A biological treatment system for washing wastewater with organic waste gas includes a waste gas scrubbing tower, a wastewater biological treatment system, and a recycling system. The waste gas scrubbing tower has a waste gas inlet and a drain outlet at its bottom and a purified gas outlet at its top. The interior of the waste gas scrubbing tower is equipped with high-pressure atomizing nozzles and a hollow sphere packing layer. The wastewater biological treatment system includes a wastewater equalization tank, a biological reaction unit, a sedimentation tank, and a clear water tank connected in sequence. The drain outlet at the bottom of the waste gas scrubbing tower is connected to the wastewater equalization tank, and the clear water tank is connected to the high-pressure atomizing nozzles of the waste gas scrubbing tower through the recycling system.
[0027] By simultaneously incorporating three units—an exhaust gas scrubbing tower, a wastewater biological treatment system, and a recycling system—the system significantly reduces land occupation and energy consumption. The high-pressure atomizing nozzles and hollow spherical packing layer within the exhaust gas scrubbing tower work synergistically to efficiently adsorb pollutants from the exhaust gas. Wastewater from the scrubbing process enters the biological reaction unit via a wastewater equalization tank, where it is purified by microbial degradation without the need for additional chemical agents, thus preventing secondary pollution. The recycling system returns treated water from the clear water tank for reuse, significantly conserving water resources and forming a closed loop of "scrubbing-degradation-reuse," achieving "waste-to-waste treatment." The closely integrated units simultaneously improve the purification efficiency of exhaust gas and wastewater, resulting in low operating costs and suitability for the collaborative treatment of organic pollution in various scenarios.
[0028] In some embodiments, the high-pressure atomizing nozzles and hollow sphere packing layers are alternately arranged inside the exhaust gas scrubbing tower from top to bottom.
[0029] The alternating arrangement of high-pressure atomizing nozzles and hollow sphere packing layers can significantly increase the gas-liquid contact area and time, thereby improving the adsorption efficiency of pollutants in exhaust gas.
[0030] In some embodiments, the bioreactor unit is equipped with a microporous aeration disc and suspended biological packing material inside.
[0031] The microporous aeration discs in the bioreactor unit can efficiently supply oxygen and ensure the activity of microorganisms; the suspended biological packing provides a huge attachment area and enriches a large number of degrading bacteria; the synergy of the two can improve the degradation efficiency of organic matter, without the need for chemical agents and avoid secondary pollution.
[0032] In some embodiments, the wastewater equalization tank is connected to a lift pump, and the wastewater equalization tank is connected to a biological reaction unit via the lift pump.
[0033] Booster pumps are used to stably transport sewage, ensuring the continuous and efficient operation of the bioreactor unit, making the microbial degradation process stable and controllable, and improving sewage purification efficiency.
[0034] In some embodiments, the recycling system includes a recycled water pump, a constant pressure tank, and a pressure sensor. The clean water tank is connected to the high-pressure atomizing nozzle of the exhaust gas scrubbing tower via the recycled water pump. The constant pressure tank is connected to the recycled water pump, and the pressure sensor is installed between the constant pressure tank and the recycled water pump.
[0035] The recycled water pump transports the treated water from the clear water tank to the exhaust gas scrubbing tower, realizing the recycling of water resources and saving a lot of water. The constant pressure tank and pressure sensor work together to accurately stabilize the pipeline pressure, ensuring the high-pressure atomizing nozzles work efficiently and improving the exhaust gas scrubbing effect. The recycled water pump, constant pressure tank and pressure sensor work together to form a closed loop in the system, reducing operating costs and enhancing overall stability and synergy.
[0036] In some embodiments, the hollow sphere packing layer is filled with polyethylene hollow spheres, and a high-pressure atomizing nozzle is provided between two adjacent sets of hollow sphere packing layers.
[0037] The hollow sphere packing layer, filled with polyethylene hollow spheres to form a porous structure, combined with high-pressure atomizing nozzles between adjacent layers, significantly increases the gas-liquid contact area and time. The atomized liquid diffuses fully within the packing layer, enhancing the adsorption and absorption of pollutants in the exhaust gas, improving pretreatment efficiency, providing stable conditions for subsequent wastewater biodegradation, and strengthening the system's synergistic treatment capabilities.
[0038] In some embodiments, the suspended biological packing material is a porous polyethylene carrier packing layer.
[0039] The suspended biological packing material uses a porous polyethylene carrier, which has the advantages of large specific surface area and good air permeability. It can efficiently enrich microbial communities. Its porous structure provides a suitable living environment for microorganisms, enhances the activity and stability of the community, improves the degradation efficiency of organic matter in wastewater, and the polyethylene material is resistant to aging and has a long service life, reducing replacement costs and ensuring long-term stable operation of the system.
[0040] In some embodiments, the filling rate of the suspended biological packing is 30%-50%.
[0041] By using suspended biological fillers with a filling rate of 30%-50%, sufficient surface area for microbial attachment is ensured, while also allowing space for wastewater flow and aeration to avoid clogging. This allows the microbial community to have sufficient contact with pollutants, improving degradation efficiency and reducing energy consumption.
[0042] In some embodiments, the microporous aeration disc is laid at the bottom of the bioreactor unit, and the suspended biological packing is disposed above the microporous aeration disc.
[0043] The microporous aeration disc is located at the bottom, and the upward-released air bubbles can fully contact the suspended biological packing material above, improving oxygen utilization. The air bubbles drive water circulation, ensuring thorough mixing of the packing material and wastewater, enhancing the degradation of organic matter by microorganisms, improving wastewater purification, and reducing energy consumption.
[0044] The operation of a biological treatment system includes three stages: the exhaust gas scrubbing stage, the wastewater biological treatment stage, and the water recycling stage.
[0045] Waste gas scrubbing stage: Organic waste gas enters the waste gas scrubbing tower through the waste gas inlet. During the ascent, it comes into full contact with the atomized water sprayed from the high-pressure atomizing nozzle. At the same time, when passing through the hollow sphere packing layer, the organic pollutants in the waste gas are absorbed by the water phase or adsorbed on the packing surface of the hollow sphere packing layer. The purified gas is discharged through the purified gas outlet.
[0046] Wastewater biological treatment stage: The washing wastewater that has absorbed pollutants flows into the wastewater equalization tank through the drain outlet at the bottom of the exhaust gas scrubber. After water quality and quantity adjustment, it is pumped into the biological reactor unit. In the biological reactor unit, microporous aeration discs continuously supply oxygen, and microorganisms on the surface of the suspended biological packing use organic pollutants in the wastewater as a carbon source to metabolize and reproduce, decomposing organic matter into CO2 and H2O. The degraded wastewater enters the sedimentation tank for sedimentation to remove the detached biological sludge, and the supernatant flows into the clear water tank.
[0047] Water recycling stage: The reclaimed water in the clear water tank is pumped to the circulation pipeline by the reuse water pump. After being stabilized by the constant pressure tank and regulated by the pressure sensor, it is re-atomized and sprayed out by the high-pressure atomizing nozzle for waste gas washing, forming a closed loop of water circulation of "washing-degradation-regeneration-reuse".
[0048] The working principle of this utility model:
[0049] like Figure 1 As shown, organic waste gas enters the waste gas scrubbing tower 1 through waste gas inlet 1-1. After being purified by the high-pressure atomizing nozzles 1-4 and the hollow sphere packing layer 1-5 inside the scrubbing tower, it is discharged through the purified gas outlet 1-2. The wastewater after scrubbing the waste gas in the waste gas scrubbing tower 1 enters the wastewater equalization tank 2-1 of the wastewater biological treatment system 2 through the drain outlet 1-3. Then, the wastewater is pumped to the biological reaction unit 2-3 by the lift pump 2-2. In the biological reaction unit, the wastewater is degraded by microorganisms attached to the suspended biological packing 2-5. The microporous aeration disc 2-4 provides sufficient oxygen for the microorganisms. After microbial degradation, the wastewater enters the sedimentation tank 2-6 for sedimentation. The treated wastewater enters the clear water tank 2-7 for storage. The water in the clear water tank is pumped to the waste gas scrubbing tower 1 through the recycled water pump 3-1 in the recycling system 3, and stable water replenishment is achieved through the constant pressure tank 3-2 and the pressure sensor 3-3. This process realizes the recycling of wastewater from waste gas scrubbing, saving energy and improving efficiency.
[0050] The main functions of this utility model are:
[0051] This invention significantly reduces land occupation and energy consumption by simultaneously incorporating three units: an exhaust gas scrubbing tower, a wastewater biological treatment system, and a recycling system. The high-pressure atomizing nozzles and hollow spherical packing layer within the exhaust gas scrubbing tower work synergistically to efficiently adsorb pollutants from the exhaust gas. Wastewater from the scrubbing process enters the biological reaction unit via a wastewater equalization tank, where it is purified by microbial degradation without the need for additional chemical agents, thus preventing secondary pollution. The recycling system returns treated water from the clear water tank for reuse, significantly saving water resources and forming a closed loop of "scrubbing-degradation-reuse," achieving "waste-to-waste treatment." The close integration of each unit simultaneously improves the purification efficiency of exhaust gas and wastewater, resulting in low operating costs and suitability for the collaborative treatment of organic pollution in multiple scenarios.
[0052] In the description of this utility model, it should be understood that the terms "upper end face", "lower end face", "top", "bottom", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility model. Therefore, they should not be construed as limiting the actual direction of use of this utility model.
[0053] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.
Claims
1. A biological treatment system for the washing of organic exhaust gas with sewage water, characterized in that: The system includes an exhaust gas scrubbing tower, a wastewater biological treatment system, and a recycling system. The exhaust gas scrubbing tower has an exhaust gas inlet and a drain outlet at its bottom, and a purified gas outlet at its top. The interior of the exhaust gas scrubbing tower is equipped with high-pressure atomizing nozzles and a hollow sphere packing layer. The wastewater biological treatment system includes a wastewater equalization tank, a biological reaction unit, a sedimentation tank, and a clear water tank connected in sequence. The drain outlet at the bottom of the exhaust gas scrubbing tower is connected to the wastewater equalization tank, and the clear water tank is connected to the high-pressure atomizing nozzles of the exhaust gas scrubbing tower through the recycling system.
2. The biological treatment system for organic waste gas scrubbing wastewater according to claim 1, characterized in that: The high-pressure atomizing nozzles and hollow sphere packing layers are alternately arranged inside the waste gas scrubbing tower from top to bottom.
3. The biological treatment system for organic waste gas scrubbing wastewater according to claim 1, characterized in that: The bioreactor unit is equipped with a microporous aeration disc and a suspended biological packing material inside.
4. The biological treatment system for organic waste gas scrubbing wastewater according to claim 1, characterized in that: The wastewater equalization tank is connected to a lift pump, and the wastewater equalization tank is connected to the biological reaction unit via the lift pump.
5. The biological treatment system for organic waste gas scrubbing wastewater according to claim 1, characterized in that: The recycling system includes a recycled water pump, a constant pressure tank, and a pressure sensor. The clear water tank is connected to the high-pressure atomizing nozzle of the exhaust gas scrubbing tower via the recycled water pump. The constant pressure tank is connected to the recycled water pump, and the pressure sensor is installed between the constant pressure tank and the recycled water pump.
6. The biological treatment system for organic waste gas scrubbing wastewater according to claim 1, characterized in that: The hollow sphere packing layer is made of polyethylene hollow spheres, and a high-pressure atomizing nozzle is provided between two adjacent sets of hollow sphere packing layers.
7. The biological treatment system for organic waste gas scrubbing wastewater according to claim 3, characterized in that: The suspended biological packing material is a porous polyethylene carrier packing layer, and the filling rate of the suspended biological packing material is 30%-50%.
8. The biological treatment system for organic waste gas scrubbing wastewater according to claim 3, characterized in that: The microporous aeration disc is laid at the bottom of the bioreactor unit, and the suspended biological packing is placed above the microporous aeration disc.