Very useful plastic enhances the system's waste water treatment waste water treatment and protection against damage, such as mechanical aerator pump etc and sedimentation tanks, which are the primary sedimentation tanks, tanks for the first extract, remove impurities that can precipitate. From the first through the water into two stages, treatment processes, which can eliminate the SS up to 50-60%
การแปล กรุณารอสักครู่..
