Introduction

Whole Systems Approach to Ecological Design

Appropriate Technology: Water

Organic Agriculture and Local Food

Appropriate Technology: Energy

Green Building & Retrofitting
Appropriate Technology: Water
Whole Systems Approach to Water Constructed Wetlands Treatment Rainwater Harvesting Lagoon and Tank Based Treatment

Biological Processes in Wastewater

This section describes the biological theory behind the design of natural treatment systems.  It is good to have a general understanding of the biology, which will help in understanding the design process and also in operating natural treatment systems.

Can you add more images to illustrate these processes: anaerobic digestion, aerobic digestion, nitrification...