Aerobic Digester Manufacturer,Supplier and Exporter in India
Product Code : EL-TWL-9111
Jlab Export is a leading Aerobic Digester Manufacturer,and suppliers in India
This bench-top aerobic digester treats wastewater in a 10 litre reactor whose porous plastic liner keeps the biomass inside while treated water seeps through to an outer chamber. As no settling tank or sludge return is needed, students can study aerobic treatment over runs of many days. A peristaltic feed pump, an air compressor, a 200 W heater on PID control and pH and dissolved oxygen meters come with it.
Specifications
| Reactor vessel | 10 litres maximum, bench mounted |
| Reactor liner | Cylindrical porous plastic, removable, spare liner supplied |
| Feed pump | Peristaltic, 24 V DC, 0–30 rpm (0–40 litres/day), ten-turn potentiometer |
| Air compressor | 240 V / 120 V, 0–3.0 litres/minute |
| pH meter | 0.00 to 14.00 |
| Dissolved oxygen meter | 0–100% saturation, resolution 2% |
| Reactor heater | Toughened glass electrical immersion heater, 200 W |
| Temperature controller | 3-term PID, limit set at 35°C |
| Level control | Adjustable constant head overflow |
| Base | Moulded plastic with built-in drain channel |
| Minimum order quantity | 1 unit |
| Dispatch time | Usually 14–18 working days |
| Manufacturer | JLab (Jain Laboratory Instruments Pvt Ltd), Ambala, India |
Lab Exercises in Wastewater Treatment
A typical run feeds settled sewage or a synthetic wastewater at a fixed rate and follows how much of the organic load is removed. Each day students sample the feed and the effluent. They measure chemical oxygen demand with a COD Digestion Apparatus, or five-day BOD with bottles kept in a BOD Incubator. Percent removal is the feed value minus the effluent value, divided by the feed value.
Changing the pump speed changes the hydraulic retention time, which is the reactor volume divided by the feed flow. At the top rate of 40 litres a day, a full 10 litre reactor is replaced in about six hours. Mixed liquor solids are found by drying a filtered sample in a Hot Air Oven, and the volatile part by burning it off in a Muffle Furnace.
Why the Porous Liner Matters
In most bench digesters the sludge must settle in a clarifier and be pumped back, and poor settling spoils the run. Here the liner holds the suspended solids in the reactor and passes treated water into the annular exit chamber. Sealing rings hold it between lid and base, so it lifts out for cleaning.
Frequently Asked Questions
Is a feed tank included?
No. The pump draws wastewater from a floor-standing feed tank that the lab provides, and delivers it to the reactor through the transparent lid. Keep the feed mixed and cool so that it does not start to break down before it reaches the reactor.
How is the feed rate set and checked?
A ten-turn potentiometer sets the pump from 0 to 30 rpm, which covers 0 to 40 litres a day. Check the real rate from time to time by collecting effluent in a Measuring Cylinder over a timed period, as pump tubing wears during long runs.
What temperature does the reactor run at?
The immersion heater and the 3-term PID controller hold the temperature you set, with the upper limit fixed at 35°C. A steady temperature keeps the biological rates constant, so results from different weeks can be compared.
How should a new run be started?
Seed the reactor with activated sludge from a working treatment plant, then start the air and bring the feed up slowly. Log results only when the effluent COD and the dissolved oxygen reading stay about the same from one day to the next.
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Last updated: 6 November 2026
