Nitrogen in hypersaline wastewater produced by industry represents a severe risk to the aqueous ambiance, and the buildup of ammonia nitrogen basically outcomes in excessive multiplication of algae and outcomes in decrease of dissolved oxygen and the death of elevated organisms. In the period in-between, the nitrite and nitrosamine in water critical risk to health and lifestyles safety of human, animal and microbes. Accordingly, the removal of nitrogen from excessive-salinity wastewater is a priority.
The bacteria able to Heterotrophic nitrification and cardio denitrification (HN-AD) now not handiest presents an nice resolution for the removal of nitrogen from wastewater, nonetheless additionally saves the flooring condominium and operation costs of a sewage remedy plant. Nonetheless, some HN-AD bacteria are usually now not appropriate kind for hypersaline environments, and reported salt-tolerant bacteria handiest inform extraordinary nitrification potential nonetheless low denitrification potential under excessive-salinity prerequisites and are usually now not acceptable for excessive-nitrogen focus. In consequence of this fact, how will we address the wastewater containing excessive salinity and nitrogen focus sooner than discharging it into ambiance?
To handle this difficulty, Prof. He from Tiangong College, Prof. Wei from Nankai College, Dr. Man Tiangong College and their team individuals possess systematically investigated the nitrogen removal performance of H. venusta TJPU05 isolated from the sediment of Salt Lake in simulated water with sole or mixed nitrogen sources and in proper wastewater with excessive focus of salt and nitrogen. Their work now not handiest demonstrated the H. venusta TJPU05 processes nice doable in treating excessive-salinity nitrogenous wastewater, nonetheless additionally presents a promising microorganism resource for denitrification from hypersaline wastewater with excessive nitrogen. This seek entitled “A heterotrophic nitrification-cardio denitrification bacterium Halomonas venusta TJPU05 appropriate kind for nitrogen removal from excessive-salinity wastewater” is printed online in Frontiers of Environmental Science & Engineering .
In this seek, the examine team isolated a unique salt-tolerant HN-AD bacterium, Halomonas venusta TJPU05, from the sediment of Salt Lake, which showed nice HN-AD potential in simulated water (SW) and proper wastewater (AW) with excessive focus of salt and nitrogen. They concluded that 86.12% of NH4+-N, 95.68% of NO3–-N, 100% of NO2–-N and 84.57% of total nitrogen (TN) will possible be eliminated from