zhang太太
The wastewater system relies on the force of gravity to move sewage from your home to the treatment plant. So wastewater-treatment plants are located on low ground, often near a river into which treated water can be released. If the plant is built above the ground level, the wastewater has to be pumped up to the aeration tanks (item 3). From here on, gravity takes over to move the wastewater through the treatment process.
80年代之后
水處理: 1. water treatment2. water curing3. treatment of the water4. aqueous processing. Examples: 公共衛(wèi)生方面的嚴(yán)重問題與該城低效率的污水處理系統(tǒng)有關(guān)。 The grave problem of public hygiene is connected with the inefficient sewage system of the city.
優(yōu)質(zhì)英語培訓(xùn)問答知識庫
