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Organic Waste Composters (OWC)

Closing the loop on solid waste, too.

An Organic Waste Composter takes kitchen, canteen, garden and food waste and converts it — through controlled aerobic composting — into stabilised, usable compost. For bulk-generators of organic waste under SWM Rules, 2016, this isn't a sustainability flourish; it's a regulatory obligation. Done right, it's also a quiet operating-cost win.

Why OWC matters now

The Solid Waste Management Rules, 2016 require any establishment generating more than 100 kg/day of organic waste to process it on-site. That covers most hotels, hospitals, large residential complexes, IT parks and corporate campuses. Compliance is not optional.

Beyond compliance, on-site OWC delivers measurable benefits: reduced tipping fees, fewer tanker movements out of the property, lower landfill contribution, and finished compost that reduces landscape-maintenance costs. For ESG-reporting clients, on-site organic waste processing is one of the simplest, most credible claims to make.

Our OWC capability extends our closed-loop philosophy from water to solid waste. For clients running large STPs at townships, hotels and campuses, the same operational team typically owns SWM compliance — so it made sense to build the capability and offer both under one contract.

ORGANIC WASTE IN Kitchen · garden · canteen Composter Microbial / mechanical aerobic processing 24 — 48 HOURS RICH COMPOST OUT For landscaping & gardens

Mechanical OWC · 25 kg/day to 5 tonnes/day

Small

25 – 100 kg/day

For small hotels, restaurants, residential societies, schools and small institutional users. Compact footprint, single-phase or three-phase electrical.

Medium

200 – 500 kg/day

For mid-sized hotels, hospitals, college campuses, large residential complexes, IT parks and corporate canteens.

Large

1 – 5 tonnes/day

For townships, large hotel chains, hospital complexes, urban local body decentralised processing, and industrial canteens.

Process & output specifications

Process
Aerobic composting with thermophilic microbial culture, mechanical churning, controlled temperature (55–65°C) and moisture
Turnaround
24–48 hours from waste-in to compost-out, depending on feedstock composition and unit size
Volume reduction
~80–85% · 100 kg of organic waste yields ~15–20 kg of stabilised compost
Output quality
Stabilised compost meeting FCO 1985 specifications · suitable for landscaping and horticultural use
Construction
SS304 / MS-coated body · IP-rated control panels · low-noise operation · odour-control bio-filter
Pollution control
Activated carbon and bio-filter scrubbing for odour · sealed-loop processing · negligible emissions

Natural composting alternatives

Aerobic windrow composting

Designed yards, controlled bedding, periodic turning. Cycle time 30–45 days. Significantly lower capex, but needs land and time. Suited for townships, agro-industries and farms.

Bin / pit composting

Static aerobic bins with bulking agents (wood chips, dry leaves, cocopeat). Cycle time 60–90 days. Very low capex. Ideal for small residential societies, schools, and low-volume institutional waste.

Where OWCs go to work

Hotels & resorts

Banquet kitchens, in-room dining, F&B outlets — high organic loads with strict odour-management requirements.

Hospitals & healthcare

Kitchen waste, garden trimmings, staff canteen waste. Biomedical waste is handled separately under separate regulations.

Residential townships

Bulk-generator obligation under SWM Rules, 2016. Well-managed OWC reduces tipping fees and external tanker movements.

IT parks & campuses

Food court and cafeteria waste. Often combined with greywater STPs in a single sustainability narrative for ESG reporting.

Educational institutions

Canteens, gardens, and student-engagement programmes around campus sustainability and circular-economy education.

Industrial canteens

Large factory kitchens, urban industrial estates, and tier-2 city manufacturing campuses with on-site staff catering.

Ready to scope

Let's run the numbers for your plant.

Send us your effluent characterisation and current water cost — we'll model the recovery economics and tell you whether a closed loop makes sense for your specific operation. Honestly.

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