Integrated device for harmless treatment of breeding wastewater and deodorization of breeding environment

Abstract

The invention provides a culture wastewater harmless treatment and culture environment deodorization integrated device, which belongs to the technical field of culture waste treatment and comprises a device main body, and a pretreatment unit, a biochemical treatment unit, a deep treatment unit and a deodorization unit which are sequentially connected through pipelines are sequentially arranged in the device main body. A control system is arranged outside the device main body, and is electrically connected with electrical equipment of the pretreatment unit, the biochemical treatment unit, the deep treatment unit and the deodorization unit, so that automatic control on the operation process of the whole device is realized. According to the invention, the integrated design is realized, the function integration level is high, the functions of harmless treatment of the breeding wastewater and deodorization of the breeding environment are integrated, and a wastewater treatment device and a deodorization device which are independent are not required to be mounted and operated respectively, so that the occupied area of equipment is effectively reduced, and the equipment investment cost and the operation management cost of a farm are reduced; the device is especially suitable for small and medium-sized farms with shortage of field resources.

Description

Technical Field

[0001] This invention relates to the field of livestock waste treatment technology, and more particularly to an integrated device for the harmless treatment of livestock wastewater and deodorization of the livestock environment. It is suitable for various large-scale livestock farms, and can simultaneously achieve efficient and harmless treatment of livestock wastewater and rapid deodorization of the livestock environment, effectively solving the problem of livestock waste pollution and improving the ecological environment of livestock farming. Background Technology

[0002] With the large-scale and intensive development of my country's aquaculture industry, the large amounts of wastewater and malodorous gases generated during the breeding process have become a significant source of environmental pollution. Aquaculture wastewater contains high concentrations of organic matter, nitrogen, phosphorus, and various pathogens. Direct discharge of this wastewater can severely pollute soil, surface water, and groundwater, disrupting the ecological balance of aquatic bodies. Meanwhile, the malodorous gases such as hydrogen sulfide and ammonia permeating the aquaculture environment not only affect the normal lives of nearby residents but also adversely impact the growth, development, and health of farmed animals, reducing aquaculture efficiency and posing a threat to the health of workers.

[0003] Currently, most devices on the market for treating aquaculture wastewater and deodorizing aquaculture environments are independent of each other. In wastewater treatment, commonly used processes such as aerobic biological treatment and anaerobic biological treatment suffer from complex processes, large footprints, low treatment efficiency, and high operating costs. Furthermore, they often fail to achieve complete harmlessness of the wastewater, and some pollutants may still remain after treatment. Regarding environmental deodorization, existing methods such as physical adsorption, chemical absorption, and biological filters either have short-lasting deodorization effects or require frequent replacement of adsorption materials or chemical agents, making operation cumbersome and prone to secondary pollution.

[0004] Furthermore, separate wastewater treatment and deodorization devices require separate installation, commissioning, and operation management, which not only increases the equipment investment and operation costs of farms but also occupies a significant amount of space. This makes them less suitable for small and medium-sized farms with limited space. Therefore, developing an integrated device that combines the harmless treatment of livestock wastewater with deodorization of the livestock environment, offering advantages such as high treatment efficiency, low operating costs, small footprint, and ease of operation, has become an urgent problem to be solved in the field of livestock waste treatment. Summary of the Invention

[0005] The purpose of this invention is to provide an integrated device for harmless treatment of aquaculture wastewater and deodorization of the aquaculture environment, which solves the technical problems of existing aquaculture wastewater treatment devices and deodorization devices being independent of each other, resulting in high equipment investment costs, complex operation and management, large footprint, incomplete wastewater treatment, poor deodorization effect, and easy generation of secondary pollution.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] An integrated device for harmless treatment of aquaculture wastewater and deodorization of the aquaculture environment includes a main body. Inside the main body, a pretreatment unit, a biochemical treatment unit, a deep treatment unit, and a deodorization unit are sequentially connected by pipelines. Outside the main body, a control system is installed. The control system is electrically connected to the electrical equipment of the pretreatment unit, the biochemical treatment unit, the deep treatment unit, and the deodorization unit to realize automated control of the entire device operation process.

[0008] Furthermore, the pretreatment unit includes a bar screen filter, a grit chamber, and an equalization tank. The bar screen filter is located at the inlet of the pretreatment unit and is used to filter large suspended solids and impurities in the aquaculture wastewater. The outlet of the bar screen filter is connected to the grit chamber via a pipe. The grit chamber is used to remove inorganic particulate matter such as sand from the wastewater to prevent clogging of subsequent equipment. The outlet of the grit chamber is connected to the equalization tank via a pipe. The equalization tank is equipped with a water quality monitoring sensor and a stirring device. The water quality monitoring sensor is used to monitor the pH value, temperature, and COD parameters of the wastewater in real time and transmit the monitoring data to the control system. The stirring device is used to make the wastewater quality uniform and provide stable influent conditions for the subsequent biological treatment unit.

[0009] Furthermore, the biochemical treatment unit includes an anaerobic reactor and an aerobic reactor. The inlet of the anaerobic reactor is connected to the outlet of the equalization tank via a pipe. The anaerobic reactor is equipped with anaerobic biological packing material and a heating device. The anaerobic biological packing material is covered with a large number of anaerobic microorganisms, which decompose organic matter in the wastewater in an anaerobic environment, converting large organic molecules into smaller organic molecules and methane gas, while simultaneously reducing the COD of the wastewater. The heating device is used to control the water temperature in the anaerobic reactor within a suitable range for the growth and reproduction of anaerobic microorganisms, and automatically adjusts the heating power based on water temperature monitoring data. The outlet of the anaerobic reactor is connected via... The pipeline connects to the aerobic reaction tank, which is equipped with aerobic biological packing material, an aeration device, and a dissolved oxygen sensor. The aerobic biological packing material is covered with a large number of aerobic microorganisms. The aeration device supplies air to the aerobic reaction tank via an external blower, providing sufficient oxygen for the aerobic microorganisms. In this aerobic environment, the microorganisms further decompose organic matter and ammonia nitrogen pollutants in the wastewater. The dissolved oxygen sensor monitors the dissolved oxygen concentration in the aerobic reaction tank in real time and transmits the monitoring data to the control system. The control system automatically adjusts the aeration intensity of the blower based on the dissolved oxygen concentration to ensure the normal metabolic activities of the aerobic microorganisms.

[0010] Furthermore, the advanced treatment unit includes a sedimentation tank, a filtration device, and a disinfection device. The inlet of the sedimentation tank is connected to the outlet of the aerobic reaction tank via a pipeline. The sedimentation tank is equipped with inclined tube packing to accelerate the settling of suspended particles in the wastewater and achieve sludge-water separation. The settled sludge is pumped to sludge treatment equipment outside the main unit via a sludge pump. The outlet of the sedimentation tank is connected to the filtration device via a pipeline. The filtration device is filled with quartz sand and activated carbon filter media to further remove residual suspended solids, color, and some organic matter in the wastewater. The outlet of the filtration device is connected to the disinfection device via a pipeline. The disinfection device is equipped with ultraviolet disinfection lamps or an ozone generator to disinfect the filtered wastewater, kill pathogens in the wastewater, and ensure that the wastewater meets the harmless discharge standards. The disinfected wastewater can be reused in the washing and greening processes of the farm through pipelines to achieve the recycling of water resources.

[0011] Furthermore, the deodorization unit includes a gas collection device, a biofilter bed, and an exhaust device. The gas collection device includes a gas collection hood and connecting pipes installed inside the breeding farm. The gas collection hood is connected to the air inlet of the biofilter bed via the connecting pipes to collect malodorous gases from the breeding environment. The biofilter bed is filled with a composite filter media made of sawdust, straw, and volcanic rock. Microbial flora capable of degrading malodorous gas components are attached to the filter media. After entering the biofilter bed, the malodorous gases are decomposed into harmless carbon dioxide and water by the microorganisms. A spray device is installed on the top of the biofilter bed, and the spray device is connected to the outlet of the deep treatment unit via a pipe, utilizing… After deep treatment, the wastewater is sprayed onto the filter media. This provides moisture and nutrients for the growth and reproduction of microorganisms, and also washes the filter media to prevent clogging. This also enables the secondary utilization of water resources. The air outlet of the biofilter bed is connected to an exhaust device via a pipe. The exhaust device includes an induced draft fan and an exhaust pipe. The induced draft fan is used to discharge the clean gas treated by the biofilter bed into the atmosphere through the exhaust pipe. A gas monitoring sensor is installed on the exhaust pipe to monitor the concentration of odorous substances in the emitted gas in real time and transmit the monitoring data to the control system to ensure that the emitted gas meets the relevant national emission standards.

[0012] Furthermore, the control system includes a control cabinet and a human-machine interface. The control cabinet is equipped with electrical components such as a PLC programmable logic controller, frequency converter, and relays. The PLC is electrically connected to equipment such as water quality monitoring sensors, dissolved oxygen sensors, gas monitoring sensors, stirring devices, heating devices, blowers, sludge pumps, ultraviolet disinfection lamps, spray devices, and induced draft fans. It is used to receive monitoring signals from each sensor and automatically control the operating status of the corresponding equipment according to the preset control program. The human-machine interface uses a touch screen, which allows operators to view the operating parameters and monitoring data of each unit in real time and manually adjust the control parameters according to the actual situation, thereby realizing manual control and remote monitoring of the device.

[0013] Furthermore, the outer shell of the main body of the device is made of stainless steel, and the connecting pipes are made of UPVC pipes or stainless steel pipes, with valves and flow meter components installed on the pipes.

[0014] Furthermore, the equipment requires regular maintenance after operation. In the pretreatment unit, the bar screen filter is cleaned weekly to remove large suspended solids and impurities trapped on the screen and prevent clogging. The grit chamber is cleaned monthly to remove sand and other inorganic particles deposited in the grit chamber. The mixing device and water quality monitoring sensor in the equalization tank are inspected and maintained quarterly to ensure that the mixing device operates normally and the water quality monitoring sensor monitors accurately.

[0015] In the biological treatment unit, the anaerobic biological packing material in the anaerobic reactor is inspected monthly. If any damage or detachment is found, it is replaced or replenished promptly. The heating device is inspected and maintained quarterly to ensure it functions properly and maintains the water temperature in the anaerobic reactor within a suitable range. The aerobic biological packing material in the aerobic reactor is inspected monthly, and the aeration device and dissolved oxygen sensor are inspected and maintained quarterly to ensure uniform aeration and accurate dissolved oxygen sensor monitoring. Simultaneously, microbial strains and nutrients are regularly added to the biological treatment unit to maintain the activity and quantity of microorganisms and ensure the effectiveness of the biological treatment.

[0016] Furthermore, in the advanced treatment unit, the inclined tube packing in the sedimentation tank is inspected monthly. If any blockage or damage is found, it is cleaned and replaced promptly. The filter media in the filtration device is inspected quarterly. When the filtration effect of the filter media decreases, it is backwashed or replaced promptly. The disinfection device is inspected and maintained monthly to ensure that it can work properly and effectively disinfect the wastewater.

[0017] Furthermore, in the deodorization unit, the gas collection hood and connecting pipes are inspected monthly. If any blockage or leakage is found in the pipes, they are cleaned and repaired in a timely manner. The composite filter media in the biofilter bed is inspected quarterly. When the deodorization effect of the filter media decreases or blockage occurs, it is turned over, replenished or replaced in a timely manner. The spraying device and induced draft fan are inspected and maintained monthly to ensure that the spraying device sprays evenly and the induced draft fan operates normally. At the same time, microbial strains are regularly added to the biofilter bed to maintain the activity of microorganisms and ensure the deodorization effect.

[0018] The present invention, by adopting the above-described technical solution, has the following beneficial effects:

[0019] (1) The present invention has an integrated design and high functional integration: The present invention integrates the harmless treatment of aquaculture wastewater and the deodorization function of aquaculture environment into one, without the need to install and operate separate wastewater treatment devices and deodorization devices, effectively reducing the equipment footprint and reducing the equipment investment cost and operation and management cost of aquaculture farms, especially suitable for small and medium-sized aquaculture farms with limited site resources.

[0020] (2) Good wastewater treatment effect, realizing harmlessness and resource utilization: Through the synergistic effect of the pretreatment unit, biochemical treatment unit and deep treatment unit, this invention can effectively remove pollutants such as organic matter, nitrogen, phosphorus and pathogens from aquaculture wastewater. The treated wastewater meets the harmless discharge standard and can be reused in the washing and greening of aquaculture farms, realizing the recycling of water resources, reducing the amount of wastewater discharged and reducing the pollution to the environment.

[0021] (3) Long-lasting deodorization effect and no secondary pollution: The deodorization unit of the present invention adopts biological filter bed deodorization technology, which uses microorganisms to degrade malodorous gases, resulting in a long-lasting deodorization effect and no secondary pollution caused by chemical deodorization agents; at the same time, the wastewater after deep treatment is sprayed onto the filter material of the biological filter bed, which not only provides water and nutrients for microorganisms, but also realizes the secondary utilization of water resources, further reducing operating costs.

[0022] (4) High degree of automation and easy operation: The present invention is equipped with a complete control system. Through the coordinated action of PLC and various sensors, it can realize the automated control of the operation process of each unit of the device. The staff can view the operating parameters and monitoring data of the device in real time through the human-machine interface and make manual adjustments according to the actual situation, which greatly reduces the labor intensity of the staff and improves the operation stability and reliability of the device.

[0023] (5) Reasonable structure and long service life: The main shell of the device and the pipes of each unit are made of corrosion-resistant and high-strength materials, which can effectively resist the corrosion of aquaculture wastewater and malodorous gases, ensuring that the device has a long service life; at the same time, the structural design of each unit is reasonable, which facilitates the daily maintenance and repair by the staff. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the integrated deodorization device of the present invention.

[0025] In the attached diagram, 1-pretreatment unit, 2-biochemical treatment unit, 3-deep treatment unit, 4-deodorization unit, and 5-control system. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are merely to provide the reader with a thorough understanding of one or more aspects of the invention, and these aspects of the invention can be implemented even without these specific details.

[0027] like Figure 1 As shown, an integrated device for harmless treatment of aquaculture wastewater and deodorization of the aquaculture environment includes a main body. Inside the main body, a pretreatment unit 1, a biochemical treatment unit 2, a deep treatment unit 3, and a deodorization unit 4 are arranged in sequence. The units are connected in sequence through pipelines. A control system 5 is arranged outside the main body. The control system 5 is electrically connected to the electrical equipment in each unit to realize the automated control of the entire device operation process.

[0028] The pretreatment unit 1 includes a bar screen filter, a sedimentation tank, and a regulating tank. The bar screen filter is located at the inlet of the pretreatment unit and is used to filter large suspended solids and impurities in the aquaculture wastewater. The outlet of the bar screen filter is connected to the sedimentation tank via a pipe. The sedimentation tank is used to remove inorganic particles such as sand from the wastewater to prevent clogging of subsequent equipment. The outlet of the sedimentation tank is connected to the regulating tank via a pipe. The regulating tank is equipped with a water quality monitoring sensor and a stirring device. The water quality monitoring sensor is used to monitor parameters such as pH, temperature, and COD (chemical oxygen demand) of the wastewater in real time and transmit the monitoring data to the control system. The stirring device is used to make the wastewater quality uniform and provide stable influent conditions for the subsequent biological treatment unit.

[0029] The biochemical treatment unit 2 includes an anaerobic reactor and an aerobic reactor. The inlet of the anaerobic reactor is connected to the outlet of the equalization tank via a pipe. The anaerobic reactor is equipped with anaerobic biological packing material and a heating device. The anaerobic biological packing material is covered with a large number of anaerobic microorganisms, which decompose organic matter in the wastewater under anaerobic conditions, converting large organic molecules into smaller organic molecules and gases such as methane, while simultaneously reducing the COD of the wastewater. The heating device is used to control the water temperature in the anaerobic reactor within a range suitable for the growth and reproduction of anaerobic microorganisms (35°C - 100°C). The anaerobic reactor is heated to 38℃, and the heating power is automatically adjusted by the control system based on the water temperature monitoring data. The outlet of the anaerobic reactor is connected to the aerobic reactor via a pipe. The aerobic reactor is equipped with aerobic biological packing material, an aeration device, and a dissolved oxygen sensor. A large number of aerobic microorganisms are attached to the aerobic biological packing material. The aeration device introduces air into the aerobic reactor through an external blower to provide sufficient oxygen for the aerobic microorganisms. In the aerobic environment, the aerobic microorganisms further decompose organic matter and pollutants such as ammonia nitrogen in the wastewater. The dissolved oxygen sensor is used to monitor the dissolved oxygen concentration in the aerobic reactor in real time and transmit the monitoring data to the control system. The control system automatically adjusts the aeration intensity of the blower according to the dissolved oxygen concentration to ensure the normal metabolic activities of the aerobic microorganisms.

[0030] The advanced treatment unit 3 includes a sedimentation tank, a filtration device, and a disinfection device. The inlet of the sedimentation tank is connected to the outlet of the aerobic reaction tank via a pipe. The sedimentation tank is equipped with inclined tube packing to accelerate the settling of suspended particles in the wastewater and achieve sludge-water separation. The settled sludge is pumped to sludge treatment equipment outside the main body of the unit via a sludge pump. The outlet of the sedimentation tank is connected to the filtration device via a pipe. The filtration device is filled with filter media such as quartz sand and activated carbon to further remove residual suspended solids, color, and some organic matter in the wastewater. The outlet of the filtration device is connected to the disinfection device via a pipe. The disinfection device is equipped with ultraviolet disinfection lamps or an ozone generator to disinfect the filtered wastewater, kill pathogens in the wastewater, and ensure that the wastewater meets the harmless discharge standards. The disinfected wastewater can be reused in the washing and greening of the farm through pipelines to achieve water resource recycling.

[0031] The deodorization unit 4 includes a gas collection device, a biological filter bed, and an exhaust device. The gas collection device includes a gas collection hood installed indoors in the breeding farm and a connecting pipe. The gas collection hood is connected to the air inlet of the biological filter bed through the connecting pipe to collect malodorous gases from the breeding environment. The biological filter bed is filled with a composite filter media composed of sawdust, straw, volcanic rock, etc., and the filter media is covered with microbial flora capable of degrading malodorous gas components. After the malodorous gases enter the biological filter bed, they are decomposed into harmless substances such as carbon dioxide and water under the action of microorganisms. A spray device is installed on the top of the biological filter bed, and the spray device is connected to the outlet of the deep treatment unit through a pipe. Next, the deeply treated wastewater is sprayed onto the filter media, providing moisture and nutrients for the growth and reproduction of microorganisms, and rinsing the filter media to prevent clogging, thus achieving secondary utilization of water resources. The air outlet of the biofilter bed is connected to an exhaust device via a pipe. The exhaust device includes an induced draft fan and an exhaust pipe. The induced draft fan is used to discharge the clean gas treated by the biofilter bed into the atmosphere through the exhaust pipe. A gas monitoring sensor is installed on the exhaust pipe to monitor the concentration of odorous substances in the emitted gas in real time and transmit the monitoring data to the control system to ensure that the emitted gas meets the relevant national emission standards.

[0032] Control System: The control system includes a control cabinet and a human-machine interface. The control cabinet is equipped with electrical components such as a PLC (Programmable Logic Controller), frequency converter, and relays. The PLC is electrically connected to water quality monitoring sensors, dissolved oxygen sensors, gas monitoring sensors, stirring devices, heating devices, blowers, sludge pumps, ultraviolet disinfection lamps (or ozone generators), spray devices, and exhaust fans, etc., to receive monitoring signals from each sensor and automatically control the operating status of each device according to a preset control program. The human-machine interface is a touch screen, which allows operators to view the operating parameters and monitoring data of each unit in real time and manually adjust the control parameters according to the actual situation, realizing manual control and remote monitoring of the device.

[0033] In addition, the outer shell of the main body of the device is made of corrosion-resistant, high-strength stainless steel to ensure that the device has a long service life; the pipes of each unit are made of UPVC (rigid polyvinyl chloride) pipes or stainless steel pipes, and valves, flow meters and other components are installed on the pipes to facilitate the adjustment and maintenance of the device by the staff.

[0034] (I) Installation and Commissioning of the Equipment

[0035] Installation preparation: Select a suitable site within the farm, clear away debris, and ensure the site is flat and firm; construct a concrete foundation according to the size of the device and installation requirements; after the concrete foundation has cured, hoist the main body of the device onto the concrete foundation and secure it.

[0036] Piping Connections: According to the design drawings of the equipment, connect the pipes between the pretreatment unit, biochemical treatment unit, advanced treatment unit, and deodorization unit, as well as the external inlet pipes, outlet pipes, sludge conveying pipes, and gas collection pipes. During the connection process, ensure that the pipe joints are well sealed and there is no leakage. At the same time, install valves, flow meters, and other components on each pipe and test them to ensure that they are operating normally.

[0037] Electrical equipment installation and wiring: Install the control cabinet of the control system in a location near the main body of the device for easy operation and maintenance. Then, connect the power and signal lines of electrical equipment such as water quality monitoring sensors, dissolved oxygen sensors, gas monitoring sensors, stirring devices, heating devices, blowers, sludge pumps, ultraviolet disinfection lamps (or ozone generators), spray devices, and induced draft fans to electrical components such as PLCs, frequency converters, and relays in the control cabinet. During the wiring process, strictly follow the electrical wiring diagram to ensure correct and secure wiring and avoid faults such as short circuits and open circuits.

[0038] Commissioning: After completing the installation and wiring of the device, commissioning is performed. First, check whether the equipment in each unit is installed in place, whether the pipe connections are correct, and whether the electrical wiring is correct. Then, inject clean water into the device and check for leaks in the pipes. At the same time, test the operating status of each pump, blower, and other equipment to ensure normal operation. Next, commission the control system, set the monitoring parameter thresholds for each sensor and the control parameters for each device, and test whether the automatic control functions of the control system are normal, such as automatically adjusting the speed of the stirring device based on the monitoring data of the water quality monitoring sensor and automatically adjusting the aeration intensity of the blower based on the monitoring data of the dissolved oxygen sensor. Finally, conduct a trial run by introducing aquaculture wastewater into the device and simultaneously turning on the deodorization unit. Monitor the wastewater treatment and deodorization effects, and fine-tune the control parameters based on the trial run results to ensure that the device reaches the optimal operating state.

[0039] (II) Operation and Maintenance of the Equipment

[0040] Routine Operation: During normal operation, staff can view the operating parameters of each unit in real time (such as the influent flow rate of the pretreatment unit, the pH value and temperature of the equalization tank, the water temperature of the anaerobic reactor, the dissolved oxygen concentration of the aerobic reactor, the effluent quality of the advanced treatment unit, and the influent flow rate and emission gas concentration of the deodorization unit) and monitoring data through the human-machine interface. If any abnormal parameters are found, the cause should be identified and dealt with promptly. At the same time, the operating parameters and treatment effect data of the unit should be recorded regularly to provide a basis for the operation management and maintenance of the unit.

[0041] Regular maintenance

[0042] Pretreatment unit: The bar screen filter is cleaned weekly to remove large suspended solids and impurities trapped on the bar screen and prevent clogging; the grit chamber is cleaned monthly to remove sand and other inorganic particles deposited in the grit chamber; the mixing device and water quality monitoring sensor in the equalization tank are inspected and maintained quarterly to ensure that the mixing device is operating normally and the water quality monitoring sensor is monitoring accurately.

[0043] Biological treatment unit: The anaerobic biological packing material in the anaerobic reactor is inspected monthly. If any damage or detachment is found, it is replaced or replenished promptly. The heating device is inspected and maintained quarterly to ensure it functions properly and maintains the water temperature in the anaerobic reactor within a suitable range. The aerobic biological packing material in the aerobic reactor is inspected monthly, and the aeration device and dissolved oxygen sensor are inspected and maintained quarterly to ensure uniform aeration and accurate dissolved oxygen sensor monitoring. Simultaneously, microbial strains and nutrients are regularly added to the biological treatment unit to maintain the activity and quantity of microorganisms and ensure the effectiveness of the biological treatment.

[0044] Advanced treatment unit: Inspect the inclined tube packing in the sedimentation tank monthly. If any blockage or damage is found, clean and replace it promptly. Inspect the filter media (quartz sand, activated carbon, etc.) in the filtration device quarterly. If the filtration effect of the filter media decreases, backwash or replace it promptly. Inspect and maintain the disinfection device (ultraviolet disinfection lamp or ozone generator) monthly to ensure that the disinfection device can work properly and effectively disinfect the wastewater.

[0045] Odor control unit: Inspect the gas collection hood and connecting pipes monthly. If any blockage or leakage is found, clean and repair it promptly. Inspect the composite filter media in the biofilter bed quarterly. If the deodorization effect of the filter media decreases or blockage occurs, turn it over, replenish or replace it promptly. Inspect and maintain the spray device and exhaust fan monthly to ensure that the spray device sprays evenly and the exhaust fan operates normally. At the same time, regularly replenish the biofilter bed with microbial strains to maintain the activity of microorganisms and ensure the deodorization effect.

[0046] Control system: The electrical components in the control cabinet are inspected and maintained quarterly, the dust on the electrical components is cleaned, and the electrical wiring is checked to ensure that the control system operates stably and reliably; the sensors are calibrated annually to ensure that the monitoring data of the sensors are accurate.

[0047] Matters not covered in this invention are common knowledge.

[0048] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An integrated device for harmless treatment of aquaculture wastewater and deodorization of the aquaculture environment, characterized in that: The device includes a main body, inside which are arranged a pretreatment unit, a biochemical treatment unit, a deep treatment unit, and a deodorization unit connected in sequence by pipelines. A control system is set outside the main body, and the control system is electrically connected to the electrical equipment of the pretreatment unit, the biochemical treatment unit, the deep treatment unit, and the deodorization unit to realize automated control of the entire device operation process.

2. The integrated device for harmless treatment of aquaculture wastewater and deodorization of the aquaculture environment according to claim 1, characterized in that: The pretreatment unit includes a bar screen filter, a grit chamber, and an equalization tank. The bar screen filter is located at the inlet of the pretreatment unit and is used to filter large suspended solids and impurities in the aquaculture wastewater. The outlet of the bar screen filter is connected to the grit chamber via a pipe. The grit chamber is used to remove inorganic particulate matter such as sand from the wastewater to prevent clogging of subsequent equipment. The outlet of the grit chamber is connected to the equalization tank via a pipe. The equalization tank is equipped with a water quality monitoring sensor and a stirring device. The water quality monitoring sensor is used to monitor the pH value, temperature, and COD parameters of the wastewater in real time and transmit the monitoring data to the control system. The stirring device is used to make the wastewater quality uniform and provide stable influent conditions for the subsequent biological treatment unit.

3. The integrated device for harmless treatment of aquaculture wastewater and deodorization of the aquaculture environment according to claim 1, characterized in that: The biochemical treatment unit includes an anaerobic reactor and an aerobic reactor. The inlet of the anaerobic reactor is connected to the outlet of the equalization tank via a pipe. The anaerobic reactor contains anaerobic biological packing material and a heating device. The anaerobic biological packing material is covered with a large number of anaerobic microorganisms, which decompose organic matter in the wastewater in an anaerobic environment, converting large organic molecules into smaller organic molecules and methane gas, while simultaneously reducing the COD of the wastewater. The heating device controls the water temperature in the anaerobic reactor within a suitable range for the growth and reproduction of anaerobic microorganisms and automatically adjusts the heating power based on water temperature monitoring data. The outlet of the anaerobic reactor is connected to... The aerobic reaction tank is connected and equipped with aerobic biological packing material, an aeration device, and a dissolved oxygen sensor. The aerobic biological packing material is covered with a large number of aerobic microorganisms. The aeration device supplies air to the aerobic reaction tank via an external blower, providing sufficient oxygen for the aerobic microorganisms. In this aerobic environment, the microorganisms further decompose organic matter and ammonia nitrogen pollutants in the wastewater. The dissolved oxygen sensor monitors the dissolved oxygen concentration in the aerobic reaction tank in real time and transmits the monitoring data to the control system. The control system automatically adjusts the aeration intensity of the blower based on the dissolved oxygen concentration to ensure the normal metabolic activities of the aerobic microorganisms.

4. The integrated device for harmless treatment of aquaculture wastewater and deodorization of the aquaculture environment according to claim 1, characterized in that: The advanced treatment unit includes a sedimentation tank, a filtration device, and a disinfection device. The inlet of the sedimentation tank is connected to the outlet of the aerobic reaction tank via a pipeline. The sedimentation tank is equipped with inclined tube packing to accelerate the settling of suspended particles in the wastewater and achieve sludge-water separation. The settled sludge is pumped to sludge treatment equipment outside the main unit via a sludge pump. The outlet of the sedimentation tank is connected to the filtration device via a pipeline. The filtration device is filled with quartz sand and activated carbon filter media to further remove residual suspended solids, color, and some organic matter from the wastewater. The outlet of the filtration device is connected to the disinfection device via a pipeline. The disinfection device is equipped with ultraviolet disinfection lamps or an ozone generator to disinfect the filtered wastewater, kill pathogens in the wastewater, and ensure that the wastewater meets the harmless discharge standards. The disinfected wastewater can be reused in the washing and greening processes of the farm through pipelines to achieve water resource recycling.

5. The integrated device for harmless treatment of aquaculture wastewater and deodorization of the aquaculture environment according to claim 1, characterized in that: The deodorization unit includes a gas collection device, a biofilter bed, and an exhaust device. The gas collection device consists of a gas collection hood installed indoors in the breeding farm and connecting pipes. The gas collection hood is connected to the air inlet of the biofilter bed via the connecting pipes to collect malodorous gases from the breeding environment. The biofilter bed is filled with a composite filter media made of sawdust, straw, and volcanic rock. The filter media is covered with microorganisms capable of degrading the components of malodorous gases. After entering the biofilter bed, the malodorous gases are decomposed into harmless carbon dioxide and water by the microorganisms. A spray device is installed on the top of the biofilter bed, and the spray device is connected to the outlet of the deep treatment unit via pipes, utilizing the treated water... The treated wastewater is sprayed onto the filter media, providing moisture and nutrients for the growth and reproduction of microorganisms, and rinsing the filter media to prevent clogging. This also enables the secondary utilization of water resources. The air outlet of the biofilter bed is connected to an exhaust system via a pipe. The exhaust system includes an induced draft fan and an exhaust pipe. The induced draft fan is used to discharge the clean gas treated by the biofilter bed into the atmosphere through the exhaust pipe. A gas monitoring sensor is installed on the exhaust pipe to monitor the concentration of odorous substances in the emitted gas in real time and transmit the monitoring data to the control system to ensure that the emitted gas meets the relevant national emission standards.

6. The integrated device for harmless treatment of aquaculture wastewater and deodorization of the aquaculture environment according to claim 1, characterized in that: The control system includes a control cabinet and a human-machine interface. The control cabinet contains electrical components such as a PLC (Programmable Logic Controller), a frequency converter, and relays. The PLC is electrically connected to various devices, including water quality monitoring sensors, dissolved oxygen sensors, gas monitoring sensors, stirring devices, heating devices, blowers, sludge pumps, ultraviolet disinfection lamps, spray devices, and induced draft fans. It receives monitoring signals from each sensor and automatically controls the operating status of the corresponding equipment according to a preset control program. The human-machine interface uses a touch screen, allowing operators to view the operating parameters and monitoring data of each unit in real time and manually adjust the control parameters according to the actual situation, thus achieving manual control and remote monitoring of the device.

7. The integrated device for harmless treatment of aquaculture wastewater and deodorization of the aquaculture environment according to claim 1, characterized in that: The main body of the device is made of stainless steel, and the connecting pipes are made of UPVC pipes or stainless steel pipes, with valves and flow meter components installed on the pipes.

8. The integrated device for harmless treatment of aquaculture wastewater and deodorization of the aquaculture environment according to claim 1, characterized in that: After the equipment is in operation, it requires regular maintenance. In the pretreatment unit, the bar filter should be cleaned weekly to remove large suspended solids and impurities trapped on the bar to prevent clogging. The grit chamber should be cleaned monthly to remove sand and other inorganic particles deposited in the grit chamber. The mixing device and water quality monitoring sensor in the equalization tank should be inspected and maintained quarterly to ensure that the mixing device is operating normally and the water quality monitoring sensor is monitoring accurately. In the biological treatment unit, the anaerobic biological packing material in the anaerobic reactor is inspected monthly. If any damage or detachment is found, it is replaced or replenished promptly. The heating device is inspected and maintained quarterly to ensure it functions properly and maintains the water temperature in the anaerobic reactor within a suitable range. The aerobic biological packing material in the aerobic reactor is inspected monthly, and the aeration device and dissolved oxygen sensor are inspected and maintained quarterly to ensure uniform aeration and accurate dissolved oxygen sensor monitoring. Simultaneously, microbial strains and nutrients are regularly added to the biological treatment unit to maintain the activity and quantity of microorganisms and ensure the effectiveness of the biological treatment.

9. The integrated device for harmless treatment of aquaculture wastewater and deodorization of the aquaculture environment according to claim 8, characterized in that: In the advanced treatment unit, the inclined tube packing in the sedimentation tank is inspected monthly. If any blockage or damage is found, it is cleaned and replaced promptly. The filter media in the filtration device is inspected quarterly. When the filtration effect of the filter media decreases, it is backwashed or replaced promptly. The disinfection device is inspected and maintained monthly to ensure that it can work properly and effectively disinfect the wastewater.

10. The integrated device for harmless treatment of aquaculture wastewater and deodorization of the aquaculture environment according to claim 8, characterized in that: In the deodorization unit, the gas collection hood and connecting pipes are inspected monthly. If any blockage or leakage is found in the pipes, they are cleaned and repaired in a timely manner. The composite filter media in the biofilter bed is inspected quarterly. When the deodorization effect of the filter media decreases or blockage occurs, it is turned over, replenished or replaced in a timely manner. The spraying device and induced draft fan are inspected and maintained monthly to ensure that the spraying device sprays evenly and the induced draft fan operates normally. At the same time, microbial strains are regularly added to the biofilter bed to maintain the activity of microorganisms and ensure the deodorization effect.

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