絮凝沉淀法是選用無機絮凝劑（如 硫酸鋁）和有機陰離子型絮凝劑聚丙烯酰銨（PAM）配制成水 溶液加入廢水中，便會產生壓縮雙電層，使廢水中的懸浮微粒失去穩定性，膠粒物相互凝聚使微粒增大，形成絮凝體、礬花。絮凝體長大到一定體積后即在重力作用下脫離水相沉淀，從而去除廢水中的大量懸浮物，從而達到水處理的效果。為提升分離效果，可適時、適量加入 助凝劑。處理后的污水在色度、含鉻、懸浮物含量。

　　1． 在水中易溶解，可形成多核絡合物使水中顆粒膠體、微粒懸浮物質聚合在一起長大，形成體積大、密度高、沉降快的絮凝體。

　　2． 在水處理中，脫色絮凝劑對原水的PH適用廣（PH7.5～10），適合微堿性。

　　3． 對管道設備腐蝕小，對污水的色度、SS去除好，處理后的廢水循環使用，并可提供工廠終水回用。

　　4． 無懸浮固體或沉渣，不會堵塞加藥設備和管道，用于廢水處理可直接投加原液。

　　5． 產生絮凝體密度大，易溶于水，污泥少。

The flocculation precipitation method is to use inorganic flocculants (such as aluminum sulfate) and organic anionic flocculants polyacrylamide (PAM) to prepare an aqueous solution and add it to the wastewater, which will produce a compressed electric double layer and make the suspended particles in the wastewater lose stability. , the colloidal particles agglomerate with each other to increase the particles and form flocs and alum flowers. After the flocs grow to a certain volume, they will separate from the water phase and precipitate under the action of gravity, thereby removing a large amount of suspended solids in the wastewater, thereby achieving the effect of water treatment. In order to improve the separation effect, a coagulant aid can be added in a timely and appropriate amount. The chromaticity, chromium content and suspended solids content of treated sewage.

 1. It is easy to dissolve in water and can form multi-nuclear complexes to make the colloidal particles and suspended particles in water grow together to form flocs with large volume, high density and fast sedimentation.

 2. In water treatment, the decolorizing flocculant is suitable for a wide range of pH (PH7.5～10) of raw water, and is suitable for slightly alkaline.

3. It has little corrosion to pipeline equipment, good removal of chromaticity and SS of sewage, recycled waste water after treatment, and can provide factory final water reuse.

4. There is no suspended solids or sediment, and it will not block the dosing equipment and pipelines. It can be directly added to the original solution for wastewater treatment.

5. The flocs produced have high density, are easily soluble in water, and have less sludge.