Cationic polyacrylamide (CPAM) is a commonly used water treatment agent, mainly used in solid-liquid separation, suspended solids sedimentation and water quality improvement. The importance of detecting the index value of CPAM cannot be ignored. In this paper, we will introduce the detection methods, index value interpretation and related applications of CPAM.
There are two main detection methods for CPAM: traditional chemical analysis and instrumental analysis. The traditional chemical analysis method uses the determination of the reaction products of chemical reagents to determine the content of CPAM through the steps of heating, precipitation and titration of the sample. The instrumental analysis method is to use advanced instruments and equipment, such as optical spectrum analyzers, mass spectrometers, etc., to detect and analyze the characteristic peaks of CPAM in samples.
The detection index values of CPAM mainly include the sedimentation rate of suspended solids, the residual amount of solids and the turbidity of water quality. Below, we'll explain the meaning and impact of each of these indicator values.
1.Sedimentation velocity of suspended solids.
The sedimentation velocity of suspended solids refers to the settlement distance of suspended solids per unit time. CPAM achieves the purpose of solid-liquid separation by increasing the density of suspended solids and promoting the sedimentation between suspended solids particles. The faster the sedimentation rate of suspended solids, the better the effect of CPAM.
2.Solid residuals.
Solids residue refers to the rate at which suspended solids are removed during water treatment. CPAM makes it easier for suspended solids to settle by agglomerating with suspended solids particles to form large particle clumps. The higher the solid residue, the more effective CPAM is in removing suspended solids.
3.Water turbidity.
Water turbidity refers to the ability of suspended particles in a body of water to scatter light. CPAM is able to reduce the turbidity of water quality by reducing the number and size of suspended particles. The lower the turbidity of the water quality, the better the water purification effect.
Based on the excellent performance of CPAM, it has been widely used in many fields.
1.Sewage treatment.
CPAM can be used for sewage treatment, through sedimentation, adsorption and aggregation, etc., to effectively remove suspended solids in sewage and improve the effect of water treatment. At the same time, CPAM can also reduce the amount of sludge generated and reduce the cost of treatment.
2.Coal mine tailings treatment.
Coal mine tailings contain a large amount of suspended solids and heavy metal ions, which cause serious pollution to the environment. CPAM can quickly coagulate and precipitate suspended solids and heavy metals in coal mine tailings, thereby improving the treatment efficiency of coal mine tailings.
3.Petroleum extraction.
In the process of oil exploitation, CPAM can be used as an oil displacement agent to improve the recovery rate of **. At the same time, CPAM can also improve the permeability of injection and production wells, and promote the flow of **.
This paper mainly introduces the meaning and interpretation of cationic polyacrylamide (CPAM) detection index values, and lists the relevant applications of CPAM in the fields of sewage treatment, coal mine tailings treatment and oil exploitation. The performance and effect of CPAM can be evaluated by reasonably selecting the detection method and correctly interpreting the index values, which can provide a basis for practical application. As an important water treatment agent, CPAM provides us with an efficient and environmentally friendly water treatment solution.