polyaluminium chloride

Polyaluminum chloride (PAC) is an inorganic substance, a new water purification material, inorganic polymer coagulant, referred to as polyaluminum. It is a water-soluble inorganic polymer between AlCl3 and Al(OH)3, and the chemical formula is [Al2(OH)nCl6-n]m, where m represents the degree of polymerization and n represents the degree of neutrality of PAC products. n=1~5 is a highly charged polymeric ring chain with Keggin structure, which has a high degree of electric neutralization and bridging effect on colloids and particles in water, and can strongly remove micro-toxic substances and heavy metal ions, and has stable properties. The inspection method can be inspected according to the national standard GB 15892-2003. Due to the bridging effect of hydroxyl ions and the polymerization of polyvalent anions, polyaluminum chloride produced is an inorganic polymer water treatment agent with higher molecular weight and higher charge.
The color is yellow or light yellow, dark brown, dark gray resinous solid. The product has strong bridging adsorption properties. During the hydrolysis process, physical and chemical processes such as condensation, adsorption and precipitation occur. The fundamental difference between polyaluminum chloride and traditional inorganic coagulants is that the traditional inorganic coagulants are low-molecular crystalline salt, while the structure of polyaluminum chloride is composed of multi-carboxyl complex with changeable morphology, fast flocculation and precipitation rate, wide pH range, non-corrosive to pipeline equipment, and obvious water purification effect. It can effectively remove SS, COD, BOD and heavy metal ions such as arsenic and mercury in water. The product is widely used in drinking water, industrial water and sewage treatment fields.

Functions:
The flocculation behavior of polyaluminum chloride is as follows:
a, the strong electric neutralization of colloidal substances in water.
b, excellent bridge adsorption of hydrolysate on suspended matter in water.
c, selective adsorption of dissolved substances.
Polyaluminum chloride is an inorganic polymer coagulant. Due to the bridging effect of hydroxide ions and the polymerization of polyvalent anions, the characteristics of inorganic polymer water treatment agents with larger molecular weight and higher charge are mainly determined by the working principle of the pressure atomizer.

property
A. The purified water quality is better than the aluminum sulfate flocculant, and the water purification cost is 15-30% lower than that.
b, the flocculant formation is fast, the sedimentation rate is fast, and the processing capacity is larger than that of traditional products such as aluminum sulfate.
c, the alkalinity of the consumption water is lower than that of various inorganic flocculants, so it is not necessary to throw alkali or less.
d, the adaptive source water pH5.0-9.0 range can be condensed.
e, small corrosion, good operating conditions.
f, solubility is better than aluminum sulfate.
g, the salt in the treated water increases less, which is conducive to ion exchange treatment and high purity water preparation.
h, the adaptability to the temperature of the source water is better than that of inorganic flocculants such as aluminum sulfate.

Purpose:
1 Urban water supply and drainage purification: river water, reservoir water, groundwater.
⒉ Industrial water purification.

3. Urban sewage treatment.
4. Recovery of useful substances in industrial wastewater and waste residue, promoting the settlement of pulverized coal in coal washing wastewater, and recovery of starch in starch manufacturing industry.
5. Various industrial wastewater treatment: printing and dyeing wastewater, leather wastewater, fluorinated wastewater, heavy metal wastewater, oily wastewater, papermaking wastewater, coal washing wastewater, mining wastewater, brewing wastewater, metallurgical wastewater, meat processing wastewater, sewage treatment.
6. Paper sizing.
7. Sugar refining.
8. Casting molding.
9. Anti-wrinkle fabric.
   ⒑ catalyst support.
   ⒒ Pharmaceutical refining
   ⒓ cement sets quickly.
   ⒔ cosmetic ingredients.