地下水源热泵对地下水水质影响实测分析

Testing Analysis for Influence of Ground Water Heat Pump System on Underground Water Quality

地下水源热泵系统运行过程中,加强地下水水质检测是至关重要的。水质的恶化会导致机组效率降低、地下含水层堵塞、机组设备腐蚀等问题。针对沈阳市典型地下水源热泵应用项目的地下水进行地下水水质监测,采用实验室水化学分析方法,对比了热泵系统运行1个月前后地下水水质变化情况。发现典型小区内热泵机组生锈导致回水中Fe^(2+)含量比进水升高了20%~30%(0.05~0.06 mg/L)。除此之外,商业中心及小区其他化学指标在系统供冷、供暖两种工况下运行1个月期间,没有发生明显变化。

It is of great importance to strengthen the monitoring of the underground water quality when operating the ground water heat pump system. The deterioration of water quality will lead to decrease of the overall efficiency, the blocking of aquifer, the rustiness of the machine and so on. In order to compare the changes of ground water quality before and after the operation of heat pump system, this paper adopted the hydrochemical analysis method in the laboratory to monitor the quality of water which using in the typical ground water heat pump application project in Shenyang. The Fe2＋ content in the return water of the heat pump was increased by 20%-30%（0.05-0.06mg/L） than using it before. Apart from this, there is no significant change of the other chemical indicators conditions for a month in the business center and the after operating the system for cooling, heating two neighborhood.