الملخص

The aim of study was removal phosphate from domestic waste water by using a different local clays and soils, waste water were collected in July and august months from five lift water stations in Mosul city (Bab Sinjar, Al-Sandooqi, Al-Hadbaa, Al-Qarazee and Al-Shurtaa), phosphate concentration average (3ppm) According to the Iraqi determinants of the quality of water suitable for the aquatic environment within the limits of (3 mg/liter), the upper value are in Bab sinjar (6.8ppm) while the lower in Al-Shurtaa (2.2ppm).Other studied on the experiments were related to analysis of materials to be adsorbed such as (Bentonit, Tulkeef and, Al-Qobah) were studied, Al-Qobah soil was more efficiency selected (quantity of soil ,concentration of phosphate ,volume of sample ,particle size and flow rate) was 2.5g, 30ppm, 40ml, 125micron and 1.5ml/min ) respectively as experiment which adsorbed efficiency reached to 98% . Thermal equilibrium of material were studied by Langmuir equation, R2 gave a good linear relationship.