無機(jī)絮凝劑主要分為兩大類別：鐵制劑系列和鋁制劑系列，當(dāng)然也包括其叢生的高聚物系列。

無機(jī)絮凝劑包括硫酸鋁、氯化鋁、硫酸鐵、氯化鐵等。常用的鋁鹽有硫酸鋁AL2(SO4)3.18H2O和明礬AL2(SO4)3.K2SO4.24H2O，另一類是鐵鹽有三氯化鐵水合物FeCL3.6H2O.硫酸亞鐵水合物FeSO4.7H2O和硫酸鐵。

簡單的無機(jī)聚合物絮凝劑、無機(jī)聚合物絮凝劑，主要是鋁鹽和鐵鹽的聚合物。如聚合氯化鋁(PAC)、聚合硫酸鋁(PAS)、聚合氯化鐵(PFC)以及聚合硫酸鐵(PFS)等。無機(jī)聚合物絮凝劑之所以比其它無機(jī)絮凝劑效果好，其根本原因在于它能提供大量的絡(luò)合離子，且能夠強(qiáng)烈吸附膠體微粒，通過吸附、橋架、交聯(lián)作用，從而使膠體凝聚。同時(shí)還會發(fā)生物理化學(xué)變化，中和膠體微粒及懸浮物表面的電荷，降低了δ電位，使膠體微粒由原來的相斥變?yōu)橄辔茐牧四z團(tuán)穩(wěn)定性，使膠體微粒相互碰撞，從而形成絮狀混凝沉淀，沉淀的表面積可達(dá)(200～1000)m2/g，具有吸附能力。

Inorganic flocculants are mainly divided into two categories: iron preparation series and aluminum preparation series, of course, also include its cluster of high polymer series.

Inorganic flocculants include aluminum sulfate, aluminum chloride, ferric sulfate, and ferric chloride. Commonly used aluminum salts are aluminum sulfate AL2(SO4)3.18H2O and alum AL2(SO4)3.K2SO4.24H2O. The other type is iron salt with ferric chloride hydrate FeCL3.6H2O. Ferrous sulfate hydrate FeSO4.7H2O and Iron sulfate.

Simple inorganic polymer flocculant, inorganic polymer flocculant, mainly aluminum salt and iron salt polymer. Such as polyaluminum chloride (PAC), polyaluminum sulfate (PAS), polyferric chloride (PFC), and polyferric sulfate (PFS). The fundamental reason why inorganic polymer flocculant is better than other inorganic flocculants is that it can provide a large amount of complex ions, and can strongly adsorb colloidal particles, through adsorption, bridging, and cross-linking, so as to make the colloid coagulate. At the same time, physical and chemical changes will occur, neutralizing the charge on the surface of colloidal particles and suspended solids, reducing the delta potential, causing the colloidal particles to change from repelling to attracting, destroying the stability of the micelles, and causing the colloidal particles to collide with each other. Thereby, flocculent coagulation precipitation is formed, and the surface area of the precipitation can reach (200～1000)m2/g, and it has adsorption capacity.