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- AFA combinated with sand filtration process has been used for removing phosphorus in secondary effluent. 利用工业废弃物粉煤灰制备活性粉煤灰除磷剂AFA,将AFA与传统的砂滤工艺相结合,用于二级出水中磷的去除。
- This study tries to use upflow rough filtration as the pretreatment for slow sand filtration. 摘要尝试采用上向流粗滤，作为慢滤池的预处理。
- Wool scoring effluent purified by bioflocculation and sand filtration is clear, with total COD?SS removal rate up to 90%. 经生物絮凝处理的洗毛污水,直接经砂滤,总COD、SS去除率可达90%25以上,出水透明。
- This paper presents the recycling process of wastewater scouring feather with method of coagulation deposition and sand filtration in Chengmai Feather Factory. 文中介绍了羽绒废水处理回用工艺，对澄迈羽绒厂精洗废水采用混凝沉淀与砂过滤法进行处理。
- This filtration process was proved to be stable and economical in nearly two years operation.The optimal operation conditions of quartz sand filtration and its backwash were studied. 实验证明了陶瓷膜过滤食醋时前置石英砂预处理工序具有重要的经济价值，同时确定出石英砂过滤和反冲洗的最佳工艺条件。
- Ouch! The sand is so hot! I can burn my feet. 哎哟！沙子这么烫！会烫伤脚的。
- The sand blew into the food and made it gritty. 砂吹进食物中，里边尽是砂子。
- The children were playing in the sand pit. 孩子们在沙坑中玩耍。
- The tractor has make deep furrow in the loose sand. 曳引机在松软的沙土上留下了深深的车辙。
- Establishment of Mathematical Model for Air-Water Backwashing Intensities of Uniform Quartz Sand Filtrating Media 石英砂均质滤料气水反冲洗强度数学模型的建立
- The sun blazed down on the sand. 阳光强烈地晒在沙滩上。
- His company was built on the sand. 他的公司根基不稳固。
- The river has scour out a passage in the sand. 这条河在沙土中冲出一条水道。
- The boat grounded on a sand bank. 船只搁浅在沙洲上。
- The kid dug a tunnel in the sand. 小孩在沙堆里挖了一个地道。
- It fell onto the wet sand, then sank (in). 那个东西掉在潮湿的沙子上，然後沉了下去。
- The bond that binds the smugglers together is a rope of sand. 把走私犯联接起来的是条沙做的绳子，一碰就碎。
- Sand and leaves trapped the water in the stream. 沙子和树叶堵住了小河的水流。
- The young man has plenty of sand in him. 这个年轻人有足够的勇气。
- He was really just ploughing the sand. 他不过是在白费力气。
