The　principal　aim　of　this　paper　is　to　develop　an　approach　to　realize.　stable　biological　nitrogen　removal　via　nitrite　under　normal　conditions.　Validation　of　the　new　method　was　established　on　laboratory-scale　experiments　applying　the　sequencing　batch　reactor(SBR)　activated　sludge　process　to　domestic　wastewater　with　low　C/N　ratio.　The　addition　of　sodium　chloride(NaCl)　to　influent　was　established　to　achieve　nitrite　build-up.　The　high　nitrite　accumulation,　depending　on　the　salinity　in　influent　and　the　application　duration　of　salt,　was　obtained　in　SBRs　treating　saline　wastewater.　The　maintenance　results　indicated　that　the　real-time　SBRs　can　maintain　stable　nitrite　accumulation,　but　conversion　from　shorter　nitrification-denitrification　to　full　nitrification-denitrification　was　observed　after　some　operation　cycles　in　the　other　SBR　with　fixed-time　control.　The　presented　method　is　valuable　to　offer　a　solution　to　realize　and　to　maintain　nitrogen　removal　via　nitrite　under　normal　conditions.