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为解决杭二棉厂2万吨/日的空调废水排放地下,并要求在灌入含水层后,在同时抽灌的情况下,地下水仍可作为空调用水的问题,这就须要解决灌量和温升问题。以往的做法是将抽并与灌井分开交叉布置(图1)这样做诚然井塞基本解决,灌量也明显增大(表1),但尚须打9～10口注井才能解决该厂空调废水的地下排放问题。显然仍不经济。所以,我们提出了一井两用,即在同一井内,同时抽灌的设想,并进行了初步试验。
In order to solve the problem of 20,000 tons / day of air-conditioning wastewater discharged into the ground in Hang-xian cotton factory and requiring underground water to still be used as air-conditioner water after pumping in aquifer at the same time, it is necessary to solve the problems of irrigation and Temperature rise problem. In the past, pumping and pumping were separately arranged crosswise (Figure 1). In this case, well plug basically solved the irrigation volume also increased significantly (Table 1), but still need to hit 9 to 10 injection wells to solve the plant Underground air conditioning wastewater discharge problems. Obviously still not economical. Therefore, we put forward the idea of a dual-purpose well, that is, the idea of pumping at the same time in the same well, and conducted a preliminary test.