MJA can be installed on the wall or tank skin replacing the submersible mixer. It is maintenance-free and easy to use.
The installation of MJA is simple. It can be connected with plastic pipes or steel pipes according to the needs of customers, and different installation forms can be adjusted according to the shape of the pool.
Different types of equipment can be provided according to customer requirements, ranging from 3 channels to 18 channels, and it also can be customized.
High-pressure wastewater enters from the inlet pipe at the bottom, distributing evenly into each integrated jet pipe. At the entrance of the jet pipes, a strong vortex is created by a vortex generator, leading to a powerful swirling action.
This swirling flow creates a negative pressure area at the end of the throat pipe due to the high-speed jet as it passes through. Pressurized air is introduced into the air chamber via an air inlet pipe and then directed into the integrated jet pipe through both the air chamber’s vent holes and the throat pipe’s air inlet.
In this negative pressure zone, air and water make full contact and are thoroughly mixed and dissolved in a swirling state. The mixture then moves into the mixing tube to continue the process of mixing, dissolving, and diffusing, which increases the efficiency of oxygen dissolution.
The integrated jet pipes are angled at 60 degrees relative to the cylinder, causing the air-water mixture that is ejected to strike the bottom of the aeration tank forcefully. This action thoroughly stirs the sediment at the tank’s bottom, preventing sludge accumulation in dead zones and increasing the trajectory of microbubbles in the water, which helps to improve the efficiency of oxygen dissolution.
Such wastewater is rich in calcium ions and is typically a byproduct of industrial activities like mining or treating water with substantial mineral content.
This category encompasses wastewater from the pulp and paper industry, characterized by high organic content along with chemicals from the paper manufacturing process, necessitating specific treatment methods.
The liquid that emerges from landfill sites, this leachate contains dissolved and suspended materials from decomposing waste and is highly toxic, requiring targeted treatment procedures.
This wastewater comes from chemical production facilities and contains a diverse mix of pollutants, both organic and inorganic, and demands advanced treatment technologies for purification.
These processes are employed in a variety of settings, including wastewater treatment, to improve the mixing of liquid phases and the dispersion of gases in the system, thus enhancing reaction rates and overall process efficacy.
System Flowchat
MJA Mixer Installation and Customization Options
MJA can be installed on the wall or tank skin replacing the submersible mixer. It is maintenance-free and easy to use.
The installation of MJA is simple. It can be connected with plastic pipes or steel pipes according to the needs of customers, and different installation forms can be adjusted according to the shape of the pool.
Different types of equipment can be provided according to customer requirements, ranging from 3 channels to 18 channels, and it also can be customized.
Tsinghua Sander Project
Installation from outside through
the tank wall
The ejector shown here is made of stainless steel and is mounted „through-the-wall“. Its connections for motive flow and compressed air are located outside the aeration tank.
These comparatively large units are equipped with a second downstream mixing zone in which additional liquid is sucked in, so intensifying the intermixing action in the tank.
If required, the ejector can be equipped with a shut-off device downstream of the motive nozzle so that the motive nozzle can be checked at any time without having to empty the tank.
This equipment option allows for a permanent application of the oxygen transfer system, even with extreme concentrations of calcium carbonate in the waste water. Although the relatively large ejectors are inferior regarding oxygen efficiency to our multi-path ejectors with finer air bubbles, their 100 % availability is often the decisive criterion for our customers. It is therefore not remarkable that many plants have been realised in the paper industry – sometimes also as a retrofitting action to replace inadequate installations
Application
The aeration of landfill leachate treatment system.
The water is particularly caustic with high ammonia nitrogen concentration and impurities.
Water treatment amounts: 1000 m³/d.
Results
In this project we selected 16 MJA-11s and 4 MJA-7s for primary and secondary nitrification tank’s aeration.
Running at full capacity, it saves 40% power consumption compared with traditional aeration, and the dissolved oxygen value is more than 3.5mg/L stably. Good comments from customers!”
DJ pump
Magnetic Drive Pumps
Special Materials
ALUMINUM MATERIAL
Heat Exchanger
Ejectors
HPHT & Diamond
Other Pumps
Control Valve
