| environ. |
water utilisation Three types of water use are distinguished: 1. withdrawal, where water is taken from a river, or surface or underground reservoir, and after use returned to a natural water body, e.g. water used for cooling in industrial processes. Such return flows are particularly important for downstream users in the case of water taken from rivers; 2. consumptive, which starts with withdrawal but in this case without any return, e.g. irrigation, steam escaping into the atmosphere, water contained in final products, i.e. it is no longer available directly for subsequent uses; 3. non-withdrawal, i.e. the in situ use of a water body for navigation (including the floating of logs by the lumber industry), fishing, recreation, effluent disposal and hydroelectric power generation (水的使用可分为三种类型：1.回收，水来自河流、地表或地下水库，取用后返回到天然水体，如：用于工业生产过程中进行冷却的水。这种回流对于河流下游的用户从河流中取水非常重要；2.消耗，开始于回收，但在这种情况下没有任何返回，如灌溉、蒸汽散发到大气中、最终产品中所包含的水，也就是说，它不再是直接供日后使用；3.非回收，即水的就地使用(包括木材业中原木的飘浮)、钓鱼、休闲、污水处理和水电发电。) |
