Patent ID: 11926913
Assignee: GUIZHOU UNIVERSITY
Field: Chemical engineering (Chemistry)
Classification: CPC C  B  Y | IPC B  C

Claim 4:
5. A method for removing ammonia nitrogen from electrolytic manganese residue, using the apparatus for removing the ammonia nitrogen from the electrolytic manganese residue according to claim 1 to remove the ammonia nitrogen from the electrolytic manganese residue and comprising following steps:
step 1: pouring the electrolytic manganese residue leachate and deionized water respectively into the treatment tank at both sides of the partition plate according to a volume ratio of 1:1, then dissolving bone meal in the deionized water, dissolving MgCl2·6H2O in the electrolytic manganese residue leachate, starting the motor after the bone meal and the MgCl2·6H2O are completely dissolved, with a motor speed of 300 r/min, driving the partition plate by the motor to reciprocate, thereby mixing the electrolytic manganese residue leachate with the deionized water, and keeping this process for 15 min until the MgCl2·6H2O, ammonia nitrogen in the electrolytic manganese residue leachate and the bone meal in the deionized water are fully mixed and reacted to obtain a mixed solution, wherein in the mixed solution n (Mg):n (N):n (P)=1.1-1.3:1:1;
step 2: on a basis of the step 1, adjusting a pH value of the mixed solution to 10 with 250 g/L sodium hydroxide or 100 g/L sodium hydroxide, and stirring and reacting for 15 min under a condition of the 300 r/min of the motor at room temperature; and
step 3: on a basis of the step 2, driving the sliding block to move by the motor under a condition of 50 r/min until liquid in the mixed solution is discharged from the liquid outlet hole to separate struvite and electrolytic manganese residue leachate after ammonia nitrogen removal.