| 1 | The study and application of coagulant to water treatment is introduced in this paper. | |
| 2 | The presence of the coagulant increased the quality of sand filtrated water, which resulted in the higher flux. | |
| 3 | In this paper the application of coagulant, mechanism of action problems existed, in wastewater treatment was introduced. | |
| 4 | Compound high molecular aluminum salt is an effective water treatment agent and orients the research and development of aluminum salt coagulants. | |
| 5 | Water temperature: it has effects on two aspects: the chemical reaction speed between coagulant and basicity of water; the quality of alum grain. |