Cationic polyacrylamides have been employed widely to improve sludge dewatering performance, but the cationic units are randomly distributed in the molecular chain, which restricts the further enhancement of dewaterability. Common template technology to prepare block copolymers requiring a huge number of templates reduces the polymer purity and molecular weight. Here, we adopted the surface-act...

The Itai-Itai disease case is one of four major pollution-related lawsuits occurring in Japan after World War H. This paper, which is based on investigations of the pollution source, the Kamioka mine, considers (1) the history of the disturbances to the environment caused by the Kamioka mine; (2) the Itai-Itai disease suit; (3) the pollution nprevention measures and methods of the Kamioka mine ...

water has an important role in creating pollution problems in the mining regimes influencing the surrounding surface environment. the purpose of this study is to make an assessment of groundwater quality in an underground mine site in portugal with a view of determining the pollution potential of groundwater. in the corresponding surface area of this underground mine, intersections of fou...

Dewatering of water-coal slurry or thickened product under conditions operating SUEK-Kuzbass JSC enrichment plants is a promising direction obtaining technogenic mineral resources. It should also be noted that the quality obtained will directly influenced by initial raw materials. If content carbon particles high and average ash solid phase low, such interest in terms additional volumes coal af...

Dewatering involves reducing level of flooding field by various technical measure. This paper studies the methods dewatering involving measure water from surface quarries with help horizontal drilling. Horizontal drilling does not cause discomfort at exploitation works, transport and storage deposits being a very efficient method. has great advantage both in terms efficiency environment because...