But environmental polluyion is caused by karst leakage during its operation on residue pond of the barium salt, Based on investigating the current situation of the pollution,inspecting the process technology,and analyzing the chemical composition,solubility and soluble condition,mineral composition of the fresh and aged residues a.

Two trapping methods are discussed in accordance with the situation to disorderly discharge smoke and dust on electric furnace slag field and the features of the smoke and dust.

In karst areas of Guizhou,improperly located waste residue disposal sites and ineffective leakproof measurements lead to karst seepage.

Aiming at the problem of comprehensive administration of Taian hydroenergy storage station, the research on techniques of comprehensive administration of abandoned dreg site was conducted according to the principle of soil erosion prevention and control, view ecology and environmental ecology in construction project.

The scheme of choosing abandoned dreg site of Taian hydroenergy storage station involved in a number of factors, such as uncertain factors, quantitative indexes, the sureness of the scheme is fuzzy.

Research on the measures to conserve soil water in the dry-hot valley areas is conducted in order to realize the vegetation restoration of abandoned dreg site of hydropower station.

There are 30 species of natural colonized plants on coal cinder yard of Wuhu thermal power station ,which are subordinate to 14 families and 29 genera.