The Ridan range

The Ridan™ food waste composting system consists of a composting machine and maturation boxes, both are which are designed and manufactured in Devon in the UK.

The Ridan™ Composting System

The Ridan Composting system comes in three sizes to suit your waste output, from the small Ridan offering 80ltrs per week, to the Large Ridan offering a massive 400ltrs per week.

No Power Required Eco friendly composter

No power required

Simple and free to run, the Ridan food waste composter is a hot, aerobic, constant throughput machine, which is capable of dealing with all food waste on-site. Turning the handle is all the is required so the composter can be located anywhere you like.

Easy Gear composting technology

innovative design

EasyGear Technology is Ridan’s answer to making composting easy and accessible to all. A handle turns a rotovator inside the composter ensuring the mixture has plenty of oxygen and remains separated.


Which Ridan is right for you?

To decide which Ridan Composting machine is suitable for your site you must consider the following:

  • How much food waste is being produced each week in litres? This can be measured using a bucket or container of known volume, then refer to the table below, the ‘Maximum Throughput’ refers to the volume of food waste in litres.
  • Where the system can be positioned
  • What you will do with the compost. Can it be spread on some grounds or gardens?
  • Complete composting includes a maturation stage in maturation boxes, our ‘Ridan 900’ is ideal for this
  • The ‘Maximum Throughput’ figure refers to food waste only, processing any less than this amount is fine.


*Please note:
The maximum throughput refers to the maximum amount (in litres) of food waste that can be processed in your Ridan composter. This amount does not include the carbon (wood) materials. The figure quoted for the maximum throughout is the absolute maximum but the optimal amount is significantly less.

You do not have to fill the composter to the maximum or optimal amount. Small amounts can also be composted, just as long as the balance of food waste and wood are maintained.

Specifications The Small RidanThe Medium RidanThe Large Ridan
Maximum Throughput 80 Litres per week 200 Litres per week 400 Litres per week
Unit Dimensions (meters)2.1L x 1.0W x 1.4H2.4L x 1.0W x 1.5H2.5L x 1.0W x1.6H
Unit Weight (empty)50Kg60Kg70Kg
Price of Ridan £2250 plus vat £2950 plus vat £3650 plus vat
Maturation Boxes1 @ £360 plus vat2 @ £360 each plus vat3 @ £360 each plus vat

Ridan Composters are designed for food waste recycling. The Ridan can compost all food waste, green waste and wood. Food waste includes meat, fish, dairy and eggs whether cooked or raw.

The Ridan food composter uses natural ingredients and processes to create a warm environment in which food waste (nitrogen) and wood (carbon), can mix with air and water. Unlike other composters, all this happens without the need for electricity, making your Ridan cheap, easy to use and eco friendly.

How the Ridan Composter works

You can view all of our products from the links below.

Latest News