一种水源热泵供水的理想水源——以重庆南温泉洗浴废水为例

Feasibility of Using Hot Spring Bathing Wastewater as the Water Supply for Water Source Heat Pump

水源热泵一般采用地下水作为水源,而长期抽取地下水将引起地面沉降、水质污染恶化,开辟新的水源热泵,具有十分重要的节能意义。温泉洗浴废水与一般的地下水相比,除水温不同外,还含有大量有机物、微生物。通过检测重庆南温泉洗浴废水水质,结果表明:废水钙镁离子含量、硫酸根离子含量超出了《浅层地热能勘查评价规范》标准,而浑浊度、矿化度、p H值、氯离子含量和二氧化硅含量均能满足水源热泵供水水质要求;有机物浓度较高,存在生物污染。如对此类废水采取相应的处理措施,水量稳定、水温高于常温的温泉洗浴废水不失为一种水源热泵供水的理想水源。

Groundwater is usually taken as the water source for water source heat pump. Compared with general groundwater, hot spring bathing wastewater has different temperature and in addition contains plenty of organic mat- ters and microorganism. The quality of bathing wastewater from Chongqing South Hot Spring was detected and ana- lyzed. Result shows that calcium and magnesium ions as well as sulfate ions exceed the standard design of Specifica- tion for the investigation and evaluation of shallow geothermal energy, and the turbidity, salinity, pH value, chlo- rine ion and silicon dioxide content meet the quality requirement of water supply. But it has high concentration of organic matter and biological contamination. If the wastewater is properly treated, it would be an ideal water supply for water source heat pump because of stable flow and relatively higher temperature.