Biogas Manager Control SMART

Biogas Manager Control SMART

Biogas Manager Control SMART (BM Control SMART) technology ensures that the treatment plant is operating at the most optimal conditions, providing maximum security and reliability.

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To increase the ease, reliability and effectiveness of the operation of an anaerobic treatment plant, Biothane, together with Kruger have developed BM Control SMART technology for anaerobic wastewater treatment. This technology consists of a carefully designed instrumentation and control package which provides the basis for real time, continuous process control and process optimization. The system is provided with automated 24/7 back up service - 365 days per year.

BM Control SMART technology is superimposed on to regular PLC or SCADA control systems in order to provide dynamic control based on real time plant performance. For this purpose BM Control SMART measures continuously essential quality parameters for water, biogas and biomass (sludge).

How it works today

Typical process outline Anaerobic Wastewater Treatment plant

-Process parameters are monitored by collecting and processing of analyses data obtained through regular spot sampling and off-site laboratory testing (e.g. COD; N; P; TSS; VFA; etc).

-No or little knowledge on reactor biomass capacity.

-Generating quality process data, interpretation of such data and assessing the overall process performance requires excessive analytical work and operator skills

Due to absence of some or many parameters operators have difficulty taking the right decision.

How it works with BM Control SMART

Process outline BM Control SMART Anaerobic Wastewater treatment plant

BM Control SMART adds the following instrumentation and control parameters:

  1. COD/TOC on inlet conditioning tank. In-line measurement of Methane content of biogas (Biogas CH4 content provides direct information if the treatment plant is loaded correctly or (slightly) overloaded)
  2. In-situ measurement of sludge bed height (to calculate the inventory of the biomass in the reactor required to calculate system capacity)
  3. pH of anaerobic effluent
  4. Feed control to conditioning tank by BM Control SMART

The figure shows the typical process outline using the BM Control SMART concept.

In case the system has more capacity than necessary, the operator may choose to run the plant at suboptimal conditions. For example it can be decided to run the plant at a lower temperature in order to safe on heating costs. Or it can chosen to:

  • run the system at a lower pH to save on caustic consumption;
  • apply a lower nutrient dosing ratio to save nutrient consumption;
  • run at a lower recirculation flow in order to save energy.

Overall, this will allow the system to run at lower operating costs still meeting the overall performance objectives.