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Removal of Nitrogen from Wastewater

How to treat an element that can cause water eutrophication

There are a variety of technologies available for nitrogen removal from wastewater, including biomass-added and suspended.

Our Range of Products

Contattori Biologici Rotanti a Biodischi Biorulli

Biorulli® Biological Oxidation System

for biological wastewater treatment

An efficient, highly flexible, and low-energy solution for secondary treatments, the Biorulli® biological oxidation system, a solution also referred to as "biological disc rotors," has very low operating and maintenance costs.

Biocombi Compact Plant

Biocombi Compact Plants

For wastewater treatment of small communities

Highly efficient biological oxidation and depth filtration: these two steps are integrated in Biocombi, a compact plant for wastewater treatment in small communities, i.e., small towns or hamlets, resorts, hotels. Small footprint, flexibility for sudden changes in hydraulic and/or organic load, minimal energy use.

Filtri a Tela a Fibra Libera

Pile Cloth Filters

for tertiary wastewater treatment

Very high solids removal yields and minimal product life cycle cost: these are the advantages of pile cloth filters for tertiary filtration. These are filtration systems suitable for industrial and civil wastewater and, in some cases, stormwater.

Filtri a Sabbia Continui Filtrasand

Filtrasand Continuous Sand Filters

for tertiary water treatment

Efficiency and continuity of operation: continuous sand filters represent a classic solution that is easy to construct and operate for wastewater finishing. Thanks to a unique patented washing system, the MITA solution allows the filter medium, i.e., sand, to be separated from impurities.

Decantatori a Pacchi Lamellari Flowpack

Flowpack Lamella-Pack Decanters

for sludge settling

A simple and very efficient solution: in lamella-pack decanters, solids-water separation is achieved through a dense network of channels, inclined at 60° to accelerate the settling of suspended solids.

Disoleatori a Pacchi Lamellari Oilpack

Oilpack Lamella-Pack Oil Separators

for process oil removal

Lamella-pack oil separators, often installed already at the primary treatment level, prevent particularly environmentally harmful components such as oils and hydrocarbons from reaching water bodies at the time of spillage. Slats inclined at 45° make the system efficient. Separated substances can also be recovered for better cost-effectiveness of the whole system.

Flottatori ad Aria Disciolta Mitadaf-Mitasat

Dissolved Air Flotation Units

for water clarification

Dissolved air flotation units are devices used in water treatment processes to separate suspended solids and other particles by forming bubbles that attack solid particles to make them less dense and rise to the surface as sludge or foam. They are used in primary civil wastewater treatments and in industries such as paper, food and oil & gas. MITA Water Technologies offers Mitadaf, a highly efficient system that combines uniform hydrodynamics and microbubble filtration.

Supporti per Biofilm

Filling Materials

for biological treatments

Wastewater is mainly contaminated with organic matter, which is decomposed by bacteria. These bacteria consume oxygen, which is essential for aquatic life. Percolating filters, and related biofilm media, provide a favorable environment for the growth of bacteria, thereby reducing oxygen demand and improving water quality.

Requirement: nitrogen treatment

Nitrogen is an essential element for life, but in excess it can pose an environmental problem. Wastewater may contain nitrogen in amounts that are not compatible with discharge to the environment and therefore require treatment.

Wastewater can vary in nitrogen content, depending on its origin, civil or industrial. In general, wastewater containing large amounts of nitrogen, such as that from food, chemical, and pharmaceutical industries, requires more intensive treatment while civilian wastewater has more conventional and predictable nitrogen concentrations and is treatable with simpler and more established technologies.

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Technologies available to treat nitrogen

There are several technologies available for nitrogen removal from wastewater. The most commonly used technologies.

  • Biomass hanging: bacteria, responsible for nitrogen conversion, grow by hanging onto physical supports, e.g., rotating disks partially submerged in the sewage to be treated. Oxygen requirements are provided by the rotational movement of the discs.
  • Suspended biomass: bacteria move freely within a tank by means of mixing systems, without the aid of physical supports. A typical example is the so-called activated sludge. Oxygen requirements are provided by mechanical aeration systems, immersed in the tank.

MITA Water Technologies' Solutions for Nitrogen

MITA Water Technologies offers a range of solutions for nitrogen removal from civil wastewater from small communities or in particular industrial settings. MITA’s solutions, based on adhexed biomass (bioreactors), are well known and established, and are designed according to specific customer needs.

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Some MITA Projects

Water Treatment and Cooling Systems for Vedani Group

Various industrial water treatment technologies as well as cooling technologies: since 1995 MITA Water Technologies has provided multiple solutions, together with its "sister" company MITA Cooling Technologies, for the complete water management of Vedani Group, which has been active in aluminum processing since 1982.

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Wastewater treatment will increasingly be a resource efficiency and optimization opportunity for organizations in both civil and industrial settings.