Mau nuerc thai ciia Cdng ty supe photphat va hoa chat Lam Thao - Phii Tlio cei ndng do photpho long cdng la 26,66mg/l trejng đ ndng dp octophcUphat la 23,09mg/l. Ddng thdi trong mau cdn chua cac ie)n F" va SiF^,"~ veii ndng dp tUcmg ung la 59,5mg/l va 1240mg/l (sau khi da loai bdt Dé xu ly mau nudc thai nay, theo chiing tdi chpn phucmg phap ket tua la thfch hctp^át do dac diem dem gian va hieu qua cua nọ Vi vay chung tdi xac dinh muc dfch ciia luan van la: Tim tac nhan thfch hop va dieu kien tdi
iru cho qua trinh xu ly mSu nudc thai ndi tren. De tach loai photphat khdi mdi trudng nudc, nhu chiing tdi da trinh bay d tren, ngudi ta thudng diing cac hpp chat ciia Cá^ Al^"^ va Fê"*" la hieu qua nhat. Tuy vay, anh hudng ciia F^, SiFg"~ den qua trinh tach loai PỐ^" bang cac tac nhan nay, theo tim hieu cua chiing tdi, đi vdi timg tac nhan chua due;c de cap den nhieụ Vi vay trong luan van nay chiing tdi dat van de khao sat 2 ndi dung:
- Khao sat dieu kien tach loai photphat theo phuemg phap ket tiia bang cac hc;p chat ciia Ca"^ (vdi), Fe-'^ (FeCl3) va Al"^ (AL(SOJ3.18.H-,0) nham
muc dfch xac dinh cac dieu kien t6\ uu cho qua trinh vêi dung dich KH3PO4 va dung dich hdn hpp KH^PÔ+NaF+Nâ^SiF^ tir đ tim duac dieu kien thfch
hpp cho qua trinh tach loaị
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- Ung dung cac dieu kien khao sat dupe de xir ly mau nudc thai thuc te ciia Cdng ty supe photphat Lam Thae) - Phu Thọ
Tuy nhien, do thanh phan ciia nueic thai la phiic tap va hieu qua ciia qua trinh tach loai lai phu thuoc rat nhieu vao nci, va do thdi gian cd han nen cac ndi dung nghien curu chua de cap dupe chi tieị Vi vay, cac kei qua thu duitc mdi chi la bucic dau va izitii han d muc do !^(^i v tham khaọ