Removal of nitrogen and phosphorus by metabolism of aquatic plant and method for efficiently treating wastewater by using aquatic plant as electron donor in denitrification reaction

摘要

According as the invention is treatment of sewage or waste water, by growing aquatic plants in the stage 1 consisting of the denitration step, and solid-liquid separation step of the nitrification step and the anaerobic condition of the breathable high processing facilities for water plants Contactor for removing nitrogen and phosphorus to and to configure the wastewater advanced treatment facilities, and by introducing the effluent of the first step height treatment plant tank water plant contact remove the nutrients of nitrogen and indeung are synthesized in vivo by the anabolic effects of aquatic plants, in excess of aquatic plants more by so by introducing an organic substance to be extracted again in the denitration step used as an electron donor required for the denitrification, the water plant is consumed in NOx removal reaction repeating the cycle is again reproduced, prior to processing the sewage by using only water plants ecological instructions If you have only less than the land area required disposition of excess aquatic plant doors Is eliminated and, after that supplies the organic material in the denitrification process or external using the organic material in the inlet water than the case of using only the conventional engineering method using a microorganism such as a denitration method is economical nitrogen and the sewage that can eliminate a very high efficiency It relates to an advanced treatment method.