Composting

Introduction

Composting is the conversion of organic waste (green waste, biowaste, wood, etc.) into valuable earth with the help of microorganisms under aerobic conditions (aerobic degradation). It is a process for treating solid organic wastes to reintroduce the organic substances back into the natural cycle.

Flowsheet of composting inputs and outputs

Flowsheet of composting inputs and outputs

Process

Composting is the controlled biological decomposition of organic material. It involves a succession of different microorganisms decomposing organic materials and converting them into a biologically stable product with no harmful effects on plants when used as a soil supplement. It is a monitored and controlled process to maintain aerobic conditions. It includes a high-temperature phase (e.g., above 55°C) that reduces or eliminates pathogens and weed seeds (see Figure 2). The key process variables for controlling the composting process include; the initial feedstock mix, the pile moisture, the pile aeration, the pile shape & size, the pile temperature and the compost retention time.

Introduction

Composting is the conversion of organic waste (green waste, biowaste, wood, etc.) into valuable earth with the help of microorganisms under aerobic conditions (aerobic degradation). It is a process for treating solid organic wastes to reintroduce the organic substances back into the natural cycle.


Flowsheet of composting inputs and outputs

Process

Composting is the controlled biological decomposition of organic material. It involves a succession of different microorganisms decomposing organic materials and converting them into a biologically stable product with no harmful effects on plants when used as a soil supplement. It is a monitored and controlled process to maintain aerobic conditions. It includes a high-temperature phase (e.g., above 55°C) that reduces or eliminates pathogens and weed seeds (see Figure 2). The key process variables for controlling the composting process include; the initial feedstock mix, the pile moisture, the pile aeration, the pile shape & size, the pile temperature and the compost retention time.