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This post was last edited by GOIHI on 2016-11-24 09:58. How to choose a diving mixer? How can one choose a high-quality submersible mixer? How to select a submersible mixer? An introduction to the methods for selecting submersible mixers. Selecting a submersible mixer is a relatively complex task, and whether the selection is correct has a direct impact on the proper operation of the equipment. The principle behind selection is to ensure that the mixer can perform its mixing functions effectively within an appropriate volume, and the flow rate can generally be used to determine this. Depending on the different process requirements of wastewater treatment plants, the optimal flow rate for mixers should be maintained between 0.15 and 0.3 m/s. If the flow rate is below 0.15 m/s, the effect of mixing caused by fluid propulsion will not be achieved; whereas if the flow rate exceeds 0.3 m/s, it will affect the efficiency of the process and lead to waste. Therefore, before making a selection, it is first necessary to determine the location where the submersible mixer will be used, such as sewage tanks, sludge tanks, or biochemical tanks ； Next are the parameters of the medium, such as suspended solids content, viscosity, temperature, and pH value ； There are also the shape of the pool, water depth, etc. For the cast iron series of submersible mixers, the required power is determined based on the volume, the density of the liquid to be mixed, and the mixing depth; one or more mixers are used depending on the specific circumstances. To ensure the best results, the user is requested to provide the following information: 1. Purpose of use; 2. Type of tank; 3. Dimensions of the tank; 4. Properties of the medium, including viscosity, density, and solid content. 5. The required power for submersible mixers is determined based on the volume, the density and viscosity of the liquid to be mixed, as well as the mixing depth; depending on the specific conditions, one or more mixers should be used. 6. The submersible mixer must operate completely submerged in water; it cannot be used in environments that are flammable or explosive, or in environments with highly corrosive liquids. 7. For selection issues, please contact the supplier. The required power for submersible mixers is determined based on the volume, the density of the liquid to be mixed, and the mixing depth; one or more mixers are used depending on the specific circumstances. 1. Mixed stirring type: The power required per cubic meter of clean water is 5 watts; this value is multiplied by the sludge correction factor and then by the tank design correction factor to determine the actual power needed per cubic meter of the medium to be mixed. This value is then multiplied by the volume of the medium to be mixed in order to find the total power required for the entire tank. 2. Low-speed flow-pushing type: The flow rate of the mixer is calculated by multiplying the initial flow velocity y of the mixing medium by the cross-sectional area formed when the impeller rotates. The power required for the medium in the entire tank can be calculated by multiplying the flow rate of the mixer by the power consumption per unit flow rate, and then multiplying the result by the sludge correction factor and the tank type correction factor. When selecting a submersible mixer, the following factors need to be considered: 1. Energy density and overall flow rate. The factors that are typically taken into account in mixer design are energy density (W/m3) and overall flow rate (m/s), especially in wastewater treatment. Due to the emergence of new high-efficiency mixing systems, the energy density standard has been replaced by one that indicates maximum energy consumption. The correctness of the selection for a submersible mixer has a direct impact on the proper operation of the equipment. The purpose of such selection is to enable the mixer to perform its mixing functions effectively within an appropriate volume, and generally, the flow rate can be used to determine the appropriate choice. Depending on the different process requirements of wastewater treatment plants, the optimal flow rate for mixers should be maintained between 0.15 and 0.3 m/s. If the flow rate is below 0.15 m/s, effective mixing cannot be achieved; whereas if it exceeds 0.3 m/s, it will affect the efficiency of the process and lead to waste. Therefore, before making a selection, it is necessary to first determine the location where the submersible mixer will be used, such as anaerobic tanks, facultative anaerobic tanks, or aeration tanks. Next, parameters of the medium itself need to be considered, such as suspended solids content, viscosity, temperature, and pH value. Additionally, factors like the shape of the tank and its water depth also play a role. 2. Working Environment Before making a selection, it is also necessary to determine the working environment of the submersible mixer, including: (1) the location where it will be used, such as anaerobic tanks, facultative aerobic tanks, or aeration tanks; (2) the purpose of its use: mixing or flow promotion; (3) the type and size of the tank, including water depth, etc.; (4) the properties of the medium to be mixed, including viscosity, density, temperature, and solid content. This article is provided by: Submersible Agitator. 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