Call from the Caribbean for Landia mixers to solve rectangular tank mixing challenge

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Landia has secured a significant order to supply low-energy mixers to the Tamboril Wastewater Treatment Plant (WWTP) in the Dominican Republic, supporting a new government initiative to improve wastewater collection and treatment infrastructure.

The project forms part of wider investment aimed at enhancing municipal wastewater treatment capacity and operational efficiency. With growing demand for reliable and energy-efficient solutions, the Tamboril WWTP required robust mixing technology capable of delivering consistent performance under challenging tank geometries.

The installation features slow-speed Landia 9HP POP-I mixers operating at 180rpm. Fitted with stainless steel propellers, the mixers are specifically designed to create gentle and consistent flow patterns within rectangular aeration tanks measuring approximately 30m in length by 25m in width and 3.5m in depth. Rectangular tanks can present complex mixing challenges, particularly in achieving uniform flow distribution without excessive energy consumption or dead zones.

By using low-energy wastewater mixers, the plant benefits from efficient oxygen transfer and reliable solids suspension while keeping operational costs under control. The slow-speed design also helps to reduce wear and maintenance requirements, contributing to long-term reliability and lower whole-life costs.

Serving a population of around 38,000 people, the Tamboril WWTP treats municipal wastewater using tertiary treatment processes. The facility is designed to handle influent flow rates of 0.629 m3 per second and 0.085 m3 per second respectively, ensuring effective treatment even during variable loading conditions. Consistent mixing within the aeration tanks plays a critical role in maintaining treatment performance and regulatory compliance.

Landia’s involvement in the Tamboril project further strengthens its track record in supplying mixing solutions for wastewater treatment plants across the Caribbean and Central America. The company’s regional experience includes successful installations at a major food producer in Puerto Rico and at a paper mill in El Salvador, where reliable industrial mixers were required to support demanding process conditions.

landia mixers dominican republic — Low-energy mixers from Landia are now installed in the Dominican Republic.

With decades of expertise in wastewater mixing and aeration technology, Landia continues to support utilities and industrial operators worldwide with energy-efficient solutions tailored to specific tank designs and process requirements. The Tamboril WWTP project highlights how proven mixer technology can play a vital role in modernising wastewater treatment infrastructure and improving environmental outcomes.

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Landia's headquarters are located in Lem, which is how it has been since 1933. Today, Landia has subsidiaries in England, Germany, Norway and the US, and a sales office in China. In addition, Landia products are sold in 45 countries worldwide. Landia supplies pumping and mixing solutions to many different industries, with the most important ones being agriculture, wastewater, biogas plants and the fish industry. In general, you will find Landia's products wherever there is a difficult medium to be pumped or mixed. Landia survives by selling quality solutions in close partnership with the customers.

Landia is not a supermarket where customers select products from the shelves. Our technical sales people are always in close discussions with customers, which ensures solutions that work. For Landia, quality in every phase a matter of course, and we have been ISO9001 certified since 1994. Quality also means that many of Landia's products have been in operation for 20-25 years even though the operating conditions may be extreme. In that way, Landia's customers achieve the lowest lifespan costs, while resource consumption is minimised, which further results in a positive impact on the environment.