te-cyc Nitrate Neutrality Solutions from Te-Tech

te-cyc^TM is the ideal solution for commercial clients seeking to achieve Nitrate Neutrality on new developments and for municipal and industrial clients who require enhanced biological phosphorus removal to achieve tightening P consents or meet growth or ammonia drivers.

The te-cyc^TM process incorporates an anaerobic selector zone, which suppresses the growth of bacteria that cause sludge bulking and includes internal recycling of the biomass to the main reactor zone to create the formation of ‘macroflocs’.

The te-cyc^TM process, with over 500 reference plants around the world, is at the forefront of biological phosphorus removal, an enhanced biological treatment process for effective nutrient removal and sludge stabilisation.

The te-cyc^TM process is a cyclic activated sludge process achieving simultaneous carbonaceous, nitrification, denitrification and biological P removal. te-cyc^TM is an advancement on conventional wastewater treatment technologies providing efficient enhanced treatment with low energy consumption and a small overall footprint when compared to traditional activated sludge (AS) or conventional sequencing batch reactors (SBRs).

Process Description

In the te-cyc^TM configuration these larger macroflocs form an internal anoxic zone and external aerobic zone and contain polyphosphate accumulating organisms or PAO’s. On the macrofloc surface, bacteria act to convert ammonia to nitrate whilst the PAO's take up phosphorus from the surrounding liquid. Inside the macrofloc, anaerobic bacteria convert the nitrate to nitrogen gas, which escapes harmlessly to atmosphere.

These macroflocs promote enhanced biological phosphorus removal and very low sludge volume indices and the simultaneous carbon oxidation and nitrification / denitrification in one basin enables shorter cycle times and eliminates the need for a separate denitrification treatment stage. The te-cyc^TM process provides enhanced phosphorus removal to achieve more stringent phosphorus effluent values without the need for an additional solids removal treatment stage.

The te-cyc^TM technology is a simple low operational cost solution available as a bespoke design or in a range of standard prefabricated package treatment units for effective nutrient removal, enhanced biological treatment and sludge stabilisation in multiple applications.

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Standard package units have been specifically designed for developer needs to address Nitrate and phosphorus and water companies looking for cost effective, reliable and simple solutions for small to medium size plants and rural locations. These standard modular units come as a complete ‘plug and play’ system including access platforms, aeration blowers, chemical dosing and local control panels for automated operation.

Medium to large sites can be catered for with multiple units or streams or larger process units adopting larger glass coated steel or concrete tanks, such arrangements are particularly suitable where there may be seasonal variations in flow and load or alternatively where operational flexibility is required or where flows may be phased or incremental as developments progress.