Anaerobic Digester Trainer
(HI109)
- Effluent treatability studies, including solids, carbon, and biogas balances to determine purification (COD/BOD)
- Determining the best operating temperatures, feed rates, and ratios
- Observing the effects of pH and influent nutrient concentration
- Studying the stability of the Process
- Determining controlling kinetics
- 100% scale-up to industrial requirements
- Preparing, warming, and acclimating an anaerobic reactor
- Showcasing the multistage nature of anaerobic digestion
- Conducting carbon balances
- Researching the effects of purification
- Performance of:
- Hydraulic loading
- Feed ratios
- Temperature
- Nutrient deficiency
- Influent strength
Reactors:
- Two identical reactors
- Nominal capacity: 5L
Temperature control:
- For each reactor 200W heating jacket with PID control from a temperature sensor positioned inside the reactor,
- Set point within range ambient to 55°C,
- The jacket is thermostatically protected
Feed pumps:
- Two identical peristaltic pumps variable speed using 10 turn potentiometer to 4rpm supplied with three tube diameters, flow rates from 0.2 to 5.8 l/day
Reactor vessel: 2 x 5L Gas collecting vessel: 2 x 5L Heat jacket: 2 Temperature sensor: 2 Pump: 2 x 0-40mL
- Anaerobic Digester Trainer (HI109)
- Hard copy user manual
An anaerobic digester trainer is designed to illustrate that anaerobic treatment procedures only exist in anaerobic environments without air. The trainer intended to serve as both a benchtop training facility and a source of operational process data for plant design. The bacteria used in these procedures are growing in acceptance in the water treatment industry. Due to their many advantages over aerobic processes, such as reduced sludge production, tolerance of stop/start operation, production of a usable fuel (methane), and relatively high throughput, these processes are becoming more and more common in the water treatment sector.
- A small-scale anaerobic digester trainer for research on wastewater treatment.
- The trainer consists of two 5L packed beds, and upward-flow reactors are included.
- Each reactor has capabilities for gas sampling and collecting.
- Reactors can be run in a series or parallel flow configuration using peristaltic pumps that have variable speeds.
- The trainer is using 200w heating jackets,the feed flow rate to each reactor may be precisely and independently adjusted to any temperature between ambient and 55°c.
- The thermostat cut-off setting of the system is 110°c.
- The digester›s ability to precisely scale up test results to industrial throughputs is one of its key features.
- The anaerobic process can be broken down into two independent phases:
- The hydrolysis of big molecules into acetic acid.
- The subsequent conversion of acetic acid into methane and carbon dioxide.
- The trainer can be operated in series, and parallel.
- The system featured PID control.
- The operator can choose the relevant process step using the software.
- A mimic diagram with measured variables is then displayed. The pump›s speed can be adjusted to provide the necessary flow rate.
- The software results viewer allows users to examine and edit the results log, which contains saved results.
- The output of the results can be printed or exported as a spreadsheet that can be accessed in a variety of programs for additional analysis.