一、现状 1、建国50年来我国污水处理行业的成长历程 (1)50—60年代的状况。解放初期由于工农业生产刚刚起步,当时的污水污染程度很低,且提倡利用污水进行农业灌溉,特别是北方缺水地区将污水灌溉利用做为经验进行推广,如著名的沈抚灌渠等,所以全国仅有几个城市建设了近十座污水处理厂(还包括1921年到1926年间外 First, the status quo 1, 50 years after the founding of China’s sewage treatment industry growth process (1) 50-60 years of the situation. In the early period of liberation, industrial and agricultural production had just started. At that time, the sewage pollution level was very low, and the use of sewage for agricultural irrigation was advocated. In particular, irrigation in northern water-scarce areas was promoted as experience, such as the famous Shenfu Irrigation Canal and so on Only a few cities across the country have built nearly 10 WWTPs (including those outside 1921-1926