Impact of sorption functional media (SFM) from zeolite tailings on the removal of ammonia nitrogen in a biological aerated filter

Attapulgite suspension filter material for biological aerated filter to remove CODMn and ammonia nitrogen in micro-polluted drinking water source

“…When the adsorption on the AS filter material is saturated, the organic matter and ammonia nitrogen adsorbed by the biofilm on the filter material undergo bioconversion, so that the adsorption site is vacated. At this time, the biofilm can adsorb organic matter and ammonia nitrogen [23], so that the biofilm can be regenerated. When the influent impact load is large, even if the proliferation rate of heterotrophic bacteria and nitrifying bacteria cannot meet the degradation requirements, AS filter material can also adsorb more organic matter and ammonia nitrogen in the water, thus strengthening the ability of ASBAF to resist impact load.…”

“…When the influent impact load is large, even if the proliferation rate of heterotrophic bacteria and nitrifying bacteria cannot meet the degradation requirements, AS filter material can also adsorb more organic matter and ammonia nitrogen in the water, thus strengthening the ability of ASBAF to resist impact load. When the influent impact load is small, the organic matter and ammonia nitrogen adsorbed on the AS filter material can be analyzed and bioconverted, so that the effluent water quality is guaranteed [23].…”

“…By the 14th hour, it has recovered nearly to the level before the shutdown, and at the 20th hour it has completely recovered to the level before the shutdown because the growth cycle of nitrifying bacteria is slower than that of heterotrophic bacteria, but the life cycle is longer, the dormancy period can be up to two years [21]. Moreover, the filter material has an adsorption effect on ammonia nitrogen, and the proliferation of nitrifying bacteria is slow, so the number of nitrifying bacteria is hardly affected by the closure of the filter [23].…”

Purification effect and microbial community structure of bio filter on rural dispersed sewage

“…Domestic and foreign scholars have conducted extensive research on the treatment of Sewage by BFs [ 8 , 9 ]. Among them, the operating conditions of the BF received widespread attention.…”

Optimization Pilot Scale Study on Ammonia Nitrogen Removal by Bio Filter

“…When wastewater ows through, the llers and bio lm will adsorb NH 3 and NH 4 + on its surface, and complete nitri cation and denitri cation under the action of nitrifying bacteria and denitrifying bacteria, so as to achieve the effect of AN removal 6 . Domestic and foreign scholars [7][8] have conducted extensive research on the in uencing factors of AN removal in BFs, such as plants 9 , lter media 10 , carbon releasing materials 11 etc. For the BF reactor that has been constructed, HL, C/N and pH three factors received the widespread attention.…”