Water resource management has increasingly become a primary focus of communities around the world. This is due to population growth and better understanding of the health concerns associated with the quality of potable water, and the proper treatment of wastewater. Water as a limited resource can meet the needs of the society and nature by means of water reuse and implementation of modern technologies.
The Mixtec group designs and manufactures a broad spectrum of specialized, custom-designed mixing equipment for the water and wastewater treatment industries. Our mixers are employed in municipal installations and projects throughout the world. Mixtec offers a well-built mixer for both potable water and wastewater treatment needs such as rapid mixing, flocculation, anoxic and anaerobic mixing.
Mixtec’s aim is to always improve the performance and efficiency of our mixers ensuring increased productivity, operational life, and cost savings. We also offer retrofitting and refurbishment of existing mixers through our full technical and maintenance support via our after-sales services. It is our priority to ensure we are available for site visits, installation inspections, and hot/cold commissioning services.»
Сhemical make-up
For applications such as lime and aluminium sulphate, our standardised HA715 or HA720 impellers are recommended.
These three-bladed, high efficiency axial down pumping impellers, are best suited for blending applications.
Our HA724, four-bladed axial down pumping impeller is also recommended for a more aggressive blend.
These impellers are designed for low shear, high flow applications.
Flocculation
Flocculation is a highly shear sensitive mixing application. Unlike most mixing applications, a flocculators function is to simply maintain the water in motion. It allows the agglomeration of the particles to proceed
Our HA715 and HA800 impellers have been developed and refined to:
- Operate at low tip speeds to maintain low shear and turbulence
- Generate high axial flow
We are involved in the sanitation process and are aware of chemicals that are used in the process. If the concentration of calcium hypochlorite is high in the solution, then the wet ends are made of carbon steel. They are lined with a fluoropolymer. Most of our wet ends are made of 304 or 316 stainless-steel.
Anti raggings impellers
Mixtec’s AS700 combined axial down and radial flow impeller is specifically designed for wastewater treatment applications
- Features a unique anti-snagging geometry to avoid harmful rag entanglement.
- For smaller fully welded impellers, our backswept blades and a ‘bolt- free’ one–piece design gives anti-fouling properties with much lower power draw than the HA794 due to hydrofoil style blades.
- Larger impellers use a counter-sunk bolt through the keeper plate to secure the impeller to the shaft.
- The combined axial and radial flow generated by this impeller gives effective floor scouring.
- AS700 is a high efficiency axial and radial Hydrofoil impeller developed specifically for duties where ragging risk is present.
- The disc also helps with reducing fouling around the shaft and hub– the best choice for wastewater applications such as anoxic/anaerobic chambers.
Anoxic and anaerobic (BNR)
Mixtec’s effective HA794 and AS700 anoxic and anaerobic design promotes denitrification by combining nitrates and organic microbiological material. Nitrogen and phosphorus are the primary cause of eutrophication resulting in algal blooms, low dissolved oxygen and endangerment to aquatic life. Anaerobic digester mixers are used to stabilize sludge, through the decomposition of organic and inorganic matter in the absence of oxygen.