Unsanitary working environment meets all those working with sewer systems.
Is it wise to transport 1.2 kg Human Waste with about 300 to 600 liters of water to wastewater treatment plants each day?
Black water is mixed with gray water, industrial wastewater and sewage from other activities. Wastewater treatment plants are expensive, polluting, inefficient, and involves losses of bioenergy and plant nutrients.
Example NITROGEN: In wastewater treatment plants in Sweden nitrogen is sent to the air at a cost of 5-30 euros per kilogram. From nitrogen in the air, synthetic nitrogen fertilizers are produced using energy-consuming process and sold for less than one euro per kilogram.
for saving energy, efficient utilization of bioenergy and recycling of plant nutrients
RS Sustainable sanitation-saving energy and plant nutrients
What is sanitation?
Sanitation generally refers to the provision of facilities and services for the safe disposal of human urine and faeces.” http://www.who.int/topics/sanitation/en/
Sanitation should be the hygienic means of promoting health through prevention of human contact with the hazards of wastes as well as proper utilization of bioenergy and efficient recycling of att least 16 chemical elements that are essential for growth and developmnet of plants, including cultivated crops.
2014 Recycling Closet (RC) instead of the Water Closet (WC)
2018 Collecting Closet BAS – prototype instead of RC
R Svedelius IV BBF 2014 Better use of bioenergy and plant nutrients from human waste