初级处理 meaning in English

primary treatment
primarytreatment

Primary treatment of sewage
初级处理污水
The primary treatment equipment consists of primary clarifier , flotation chamber , chemical coagulation and sedimentation , as well as special clarifier , e . g
初级处理之设施有初级沉淀池、浮除池、化学混凝沉淀池及其他特殊之沉淀池
Information processing includes data acquisition layer , elementary disposal layer , potential danger analysis layer , decision support layer and holistic analysis layer
信息处理包括：数据采集层、初级处理层、隐患分析层、决策支持层、全局分析层。
Generally speaking , the treatment can be carried out in combinations of pre - treatment , primary treatment , secondary treatment and advanced treatment and the application depends on the available raw water quality and the required finished water qualities as well as economic considerations
总之，用水及废污水的处理技术大致上可分为前处理、初级处理、二级处理及高级处理等处理方式，依据各种不同的原水水质及处理水水质之要求，以及经济有效的考量下，选择适当的处理程序组合进行处理。