Composting Machine

In four stages inside a single cycle. Waste is loaded without any sorting; blades shred it to a uniform particle size while paddles mix in a composting culture; aerobic microbes then generate heat and the chamber holds 55 to 65°C with steady airflow; after roughly 24 hours the machine discharges a dark, stabilised, odour-free material at about 15 per cent of the volume that went in.

Cooked and raw food waste, vegetable and fruit peel, curry and gravy, tea and coffee grounds, eggshells, fish and meat scraps, garden trimmings, flowers and temple nirmalya, and expired food once unwrapped. What must stay out is plastic, glass, metal, foil, thermocol and cloth. Bulk cooking oil, large bones and coconut shells should be limited rather than banned.

Yes, and this is the main practical difference from pit composting or vermicomposting, where cooked, oily and salted food causes odour, pests and worm die-off. Spice and salt at normal kitchen concentrations are not a problem. The exception is bulk used frying oil, which coats the material, blocks airflow and stalls the cycle.

No, when it is running correctly. The process is aerobic and enclosed, with a bio-filter on the exhaust, and aerobic decomposition does not create the odour compounds associated with rotting waste. This is why machines are installed inside hotel back-of-house corridors, hospital service areas and residential basements. Persistent smell usually means overloading, too much liquid, or a blocked air path.

By roughly 80 to 85 per cent over the cycle. Most of that reduction is water leaving as vapour, with the rest being carbon converted to CO2 by the microbes. In practical terms, 100 Kg of wet waste discharges as around 15 Kg of stabilised material before curing.

Estimate 0.3 to 0.5 Kg of wet waste per person per day, then choose a machine that runs at 60 to 80 per cent of capacity on an ordinary day. Better still, weigh your wet waste bins for three normal days and take the average — that one measurement is more reliable than any formula and is what stops buyers over-paying for capacity they never use.

Price starts at ₹75,000 for a 10–25 Kg per day unit and rises to ₹9,50,000 and above for a 500 Kg per day industrial machine. Between those, the figure depends on body material, automation level and site conditions more than on capacity alone. Turnkey 1–5 TPD plants are quoted per project after a site survey.

A 10–25 Kg machine runs on 2 KW single-phase power and needs roughly the floor area of a washing machine. Every larger model needs three-phase — 3 KW at 50 Kg, 4 KW at 100 Kg, 6 KW at 200 Kg. A 100 Kg machine takes about a third of a car parking space. Add roughly 3 ft of service clearance, plus separate room for curing bins.

Yes, once cured. Material coming straight out of the machine is stabilised but still biologically active, and using it immediately can stress plants. After 10 to 15 days in curing bins it becomes mature, nutrient-rich compost suitable for gardens, landscaping, or bagging. Most of our institutional clients use it on their own grounds.

Under Solid Waste Management Rules 2016, bulk waste generators — broadly, premises producing 100 Kg or more of waste per day or campuses larger than 5,000 sq. m — are required to process wet waste on site. Many municipal corporations enforce this through occupancy and trade licence conditions.

With routine maintenance, well over a decade. The wear parts are shredder blades, drive belts and seals, all of which are replaceable. Body material decides most of the lifespan — SS 304 resists constant moisture and salts far better than painted mild steel, which is why it is worth specifying for coastal and high-humidity sites.