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针对江水源热泵系统取水量大可能对江水水质产生影响的问题,以嘉陵江重庆主城段水体为研究对象,采用物理模拟的方法对江水源热泵系统温排水进行了系统的试验研究。结果表明,温排水对排放口近水域水温和水质均有一定程度的影响。在模拟大型江水源热泵系统运行工况的条件下,温排水导致排放口附近水域水温上升约3.3℃,间歇运行时水温能得到有效恢复;温排水导致排放口局部水域溶解氧降低8%~12%;并能加快水中营养物质的循环,从而使水体的高锰酸盐指数升高;温排水有利于水体中的有机氮转化为氨氮,加速氮循环,从而使水体氨氮和总氮含量升高,但对总磷影响不显著。
In view of the problem that the water intake of the river water source heat pump system may have an impact on the water quality of the river, taking the water in the main section of the Jialing River in Chongqing as the research object, the physical simulation method was used to systematically test the water temperature of the water source heat pump system. The results show that warm drainage has a certain degree of impact on the water temperature and water quality near the discharge. Under the condition of simulating the operating conditions of large-scale river-source heat pump system, the water temperature in the water near the discharge port increased by about 3.3 ° C due to warm drainage, and the water temperature could be recovered effectively during the intermittent operation. The temperature of the drainage led to a decrease of 8% to 12% %; And can speed up the nutrient cycling in the water, so that the water permanganate index increased; warm drainage is conducive to the conversion of organic nitrogen in water into ammonia nitrogen, accelerate the nitrogen cycle, so that ammonia nitrogen and nitrogen content of water increased , But the impact on total phosphorus was not significant.