Aerobic Digester
Product Code : LSK-TWL-10809
Aerobic Digester (SKU LSK-TWL-10809) is a 10-litre bench-mounted reactor for studying aerobic biological treatment of wastewater. A porous liner keeps the suspended solids inside the reactor while treated water passes out, so the process can be studied without an external settling and recycle step. Environmental, civil and biochemical engineering labs use it. Science Lab Supplies manufactures it at its factory at Plot 448, HSIIDC Industrial Area, Saha, Ambala, India, and supplies it direct to universities, tender contractors and distributors.
Specifications
Every technical detail of the digester is listed in the table below. In short, a 10-litre reactor with a removable porous liner sits on a moulded base, a 24 V DC peristaltic pump feeds it, an air compressor aerates it, a PID-controlled 200 W heater holds temperature, and pH and dissolved oxygen meters monitor it.
| Specification | Value |
|---|---|
| SKU | LSK-TWL-10809 |
| Reactor capacity | 10 litres maximum |
| Mounting | Bench, on a moulded plastic base with internal drain channel |
| Reactor wall | Cylindrical porous plastic liner, removable for cleaning |
| Spare liner | Supplied |
| Sealing | Sealing rings between lid and base |
| Lid | Transparent; feed enters through it |
| Treated water exit | Outer annular exit chamber |
| Feed pump | 24 V DC peristaltic, DC motor driven |
| Pump speed | 0–30 rpm |
| Feed rate | 0–40 litres/day |
| Speed setting | Ten-turn potentiometer |
| Air compressor | 240 V / 120 V |
| Air flow | 0–3.0 litres/minute |
| Reactor heater | Toughened glass electric immersion heater, 200 W |
| Temperature controller | 3-term PID |
| Temperature limit | Set at 35 °C |
| pH meter range | 0.00–14.00, probe included |
| Dissolved oxygen range | 0–100% saturation, probe included |
| Dissolved oxygen resolution | 2% |
| Level control | Adjustable constant head overflow |
| Feed tank | Floor-standing; not supplied |
| Manufacturer | Science Lab Supplies, Saha, Ambala, Haryana |
| Country of origin | India |
Applications and Experiments for the Aerobic Digester
The digester is used to run continuous aerobic treatment of wastewater for periods of many days while recording pH, dissolved oxygen, temperature and feed rate. Because solids are retained by the porous liner, students can focus on loading rate and treatment performance, key topics in environmental engineering practicals.
- B.Tech civil or environmental engineering: aerobic biological treatment of wastewater.
- Effect of feed rate and hydraulic loading on treated water quality, with suspended solids filtered on the Equipment for Vacuum Filtration.
- Dissolved oxygen and pH monitoring in an aerated reactor, with grab samples cross-checked on a Bench pH Meter.
- Biotechnology and biochemical engineering: microbial growth under controlled temperature.
Standard Scope of Supply
Each digester comes with the 10-litre reactor, a porous liner plus a spare liner, the peristaltic feed pump, air compressor, immersion heater with PID controller, pH and dissolved oxygen probes and meters, and the constant head overflow on its moulded base. The floor-standing wastewater feed tank is not supplied.
Packing, MOQ and Lead Time
A quotation can cover one digester or a set for an environmental engineering lab, and each Science Lab Supplies quotation states the packing, delivery time and price for that quantity. Related water treatment trainers can be added when you are buying engineering lab equipment in India.
As a registered exporter with an Importer-Exporter Code, Science Lab Supplies can ship to buyers in Saudi Arabia, Oman, the Philippines, Nepal, Bangladesh and Zambia. Enquire via the contact page or the enquiry cart; the lab tender page explains tender supply.
Frequently Asked Questions
Is a feed tank included with the Aerobic Digester?
No. Wastewater is drawn from a floor-standing feed tank that is not supplied, so the laboratory provides a suitable container or asks for one on the quotation.
Why does the reactor use a porous liner?
The porous plastic wall holds suspended solids inside the reactor while treated water passes to the outer exit chamber, avoiding the difficulty of settling solids well enough for external recycle.
Is Science Lab Supplies the manufacturer or a trader?
Science Lab Supplies is the manufacturer. The digester is built at its own factory in Saha, Ambala, India, and quotations come directly from the factory.
What precautions are needed with wastewater?
Wastewater and sludge can carry microorganisms, so students should wear gloves and clean spills promptly; the moulded base has a drain channel for spillages and wash-down water.
Related Environmental and Bioprocess Trainers
These units build an environmental and bioprocess lab around the digester. They cover solids settling, oxygen transfer into water, membrane treatment, enzyme kinetics and stirred tank reactors, giving students a view of both physical and biological steps in water and wastewater treatment.
- Sedimentation Studies Apparatus — five removable borosilicate glass graduated cylinders for zone settling tests.
- Liquid Sedimentation Apparatus — five long transparent columns with a backlit graduated rear panel and stopwatch.
- Gas Absorption Column — wetted wall column with inlet and outlet oxygen probes for measuring oxygen transfer into water.
- Reverse Osmosis Ultra filtration Unit — membrane module with RO and UF membranes, pressures variable up to 55 bar.
- Batch Enzyme Reactor — acrylic reactor with PID temperature control and a peristaltic sampling loop.
- Continuous Stirred Tank Reactor — 2 L stainless steel stirred reactor with samples taken from the top outlet.
Browse the full Training Workshop Labs range, the Chemistry Lab range for pH meters and filtration glassware, or all TVET lab equipment.
Last updated: 9 October 2026
