淡水资源的短缺和人们环保意识的逐步提高，使得污水处理的重要性日益突出。
According to the shortage of freshwater both with the enhancement of environment protection, the importance of wastewater treatment is becoming more and more obvious.
淡水资源的短缺和人们环保意识的逐步提高，使得污水处理的重要性日益突出。
According to the shortage of freshwater both with the enhancement of environment protection, the importance of wastewater treatment is becoming more and more obvious.
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