According to this table, it can be seen that the urban water source is in good condition without heavy metal pollution. According to the environmental quality standard for surface water (gb-3838-88), the water quality of the raw water conforms to the class III water quality standard for surface water. Except for the high turbidity, chroma and the total number of colonies, all other parameters conform to the provisions of the sanitary standard for drinking water (gb5749-85). For the treatment of source water, only impurity removal and colony treatment are needed. Therefore, the design can use the general water purification process.<br>
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