Without an intermediary, microbial island. When the waste water sludge digestion occurs under various conditions, such as Wi-Fi and oxygen gas, methane gas, carbon dioxide and hydrogen sulfide, etc.
Without an island microbial When sewage sludge is exposed to degradation under anaerobic conditions and gases such as methane, carbon dioxide. And hydrogen sulfide, etc.
Without intermediary to microbial island. When the water in contact with the sludge will cause degradation under anaerobic condition and gas such as methane, carbon dioxide. And hydrogen sulfide, etc.