The pre-treatment of them before conventional cyanide leaching includes roast, chemical oxidation and biological oxidation.
在传统氰化浸出之前进行的预处理过程包括焙烧，化学氧化和生物氧化。
2
In this paper, a review was made on the advance in the research on physical, chemical and biological methods for the treatment of anthraquinone compounds in water.
本文对物理、化学、生物法处理水中蒽醌化合物的近期研究成果进行了综述，并提出了需要进一步研究的方面。
3
Operation treatment, radiotherapy, chemical medication, biological immunization therapy are four major treatment means of the cancer at present.