Gravity bag filters load solid waste efficiently and are easily cleaned. These bags are inexpensive, very durable and eliminate the need for post mechanical filtration with many applications.
重力砂滤器可以简单高效的清洁固体废弃物。袋子具有价格低廉、耐用的特点，并可以减少后机械过滤的需要。
3
According to the principle of composite graded into seepage Wells pits multilayer filter material, water filtration by gravity flow top-down.