| 摘要 |
This invention provides a process for clarifying waters and wastewaters by using aluminum salts and/or aluminum polymers and newly formulated high molecular weight quaternized polymers. This invention further provides an improved process for clarifying waters and wastewaters to achieve a settled water turbidity of less than 1.0 NTU by using aluminum compounds, including aluminum salts and/or aluminum polymers and high molecular weight quaternized ammonium polymers including di-allyl di-methyl ammonium chloride (DADMAC) polymer and epichlorohydrin di-methyl amine (Epi-DMA) polymer. The aluminum polymers and the high molecular weight quaternized ammonium polymers are added to and/or blended in the water or wastewater to form a flocculated suspension, causing liquid-solid separation. Preferably, poly-aluminum hydroxychloride, poly-aluminum chloride and poly-aluminum siloxane sulfate are used as aluminum polymers along with high molecular weight quaternized ammonium polymers such as di-allyl di-methyl ammonium chloride (DADMAC), to significantly improve liquid-solid separation in waters and wastewaters.
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