Cationic Polyacrylamide (CPAM) is a macromolecular flocculant with the advantages of fast adsorption rate, low dosage, and excellent flocculation performance. In coal washing wastewater, CPAM can rapidly adsorb pollutants such as suspended solids and heavy metals, aggregating them into large, easily settleable particles...

Coal washing wastewater is an integral part of the coal industry. With the increasing awareness of environmental protection, the effective treatment of such wastewater has become a crucial issue. As a common flocculant, Cationic Polyacrylamide (CPAM) plays a significant role in the treatment of coal washing wastewater.

Cationic Polyacrylamide (CPAM) is a macromolecular flocculant characterized by fast adsorption, low dosage, and superior flocculation. In coal washing wastewater, CPAM can quickly adsorb pollutants including suspended solids and heavy metals, clumping them into large particles that settle easily. This treatment method effectively reduces pollutant content in the wastewater and improves water quality.

The adsorption effect of CPAM is influenced by various factors, such as the pH value, temperature, pollutant type, and concentration of the wastewater. Under optimal conditions, CPAM exhibits excellent adsorption performance. For instance, when the pH value ranges from 7 to 8, CPAM’s adsorption effect is significant, enabling effective removal of suspended solids from the wastewater. Additionally, factors like stirring speed and reaction time also affect CPAM’s adsorption efficiency.

Beyond its outstanding adsorption performance, CPAM also delivers excellent flocculation results. Adding an appropriate amount of CPAM to the wastewater significantly enhances coagulation, accelerating the settlement rate of suspended solids. This helps improve wastewater treatment efficiency, shorten hydraulic retention time, and reduce equipment investment and operational costs.

In practical applications, CPAM is usually combined with other treatment methods, such as physical filtration and biological treatment. For example, in physical filtration, CPAM can act as a pretreatment agent to boost filtration efficiency; in biological treatment, it can serve as a biofilm carrier, enhancing microbial adhesion and activity.

In summary, Cationic Polyacrylamide demonstrates excellent adsorption and flocculation performance in coal washing wastewater treatment. It not only effectively removes pollutants and improves water quality but also accelerates the settlement of suspended solids, increasing treatment efficiency. However, in practical use, the optimal treatment scheme must be determined based on specific wastewater characteristics and treatment requirements. Meanwhile, factors such as CPAM’s production cost and service life should also be taken into consideration.