影响水中溶解氧测定的因素有哪些?
什么是溶解氧计(DO)?溶解氧是测量水中含氧量的一种方法。能够维持生命的健康水必须含有溶解氧。溶解氧通过:直接从大气中吸收进入水中。风、波、流或机械通气引起的快速运动水生植物作为生命光合作用过程的副产品。影响水中溶解氧测定的因素有哪些?大气压力传感器:更高的大气压力允许水体保留更多的溶解氧。来自上方的压力使水可以容纳更多的氧分子。因此，由于气压较低，在较高海拔地区溶解氧浓度通常较低。温度:温度较低的水体可以含有更多的溶解氧，因为氧分子的运动较少。在温暖的水中，氧分子运动的增加使它们能够从水中逃到空气中。水的深度:水越浅，溶解氧的浓度就越高，因为风在表面产生的波浪会增加溶解氧，生活在光线充足的浅水中的水生植物也会产生溶解氧，这是光合作用的副产品。盐度越低，溶解氧的浓度就越高，因为盐分会影响气体的溶解度，基本上会把气体赶出水面。生物活性:微生物在水中的生物活性较低，导致溶解氧浓度较高，因为微生物以有机物和腐烂物质为食，在呼吸过程中使用氧气。为什么要监测水中的溶解氧?Measuring dissolved oxygen in water and treatment to maintain properly dissolved oxygen sensors, are crucial functions in a variety of water treatment applications. While dissolved oxygen is necessary to support life and treatment processes, it can also be detrimental, causing oxidation that damages equipment and compromises the product. Dissolved oxygen affects:Quality: The Dissolved oxygen concentration determines the quality of source water. Without enough Dissolved oxygen, the water turns foul and unhealthy affecting the quality of the environment, drinking water, farming, agriculture, and others.Regulatory Compliance: To comply with regulations, industrial wastewater treatment often needs to have certain concentrations of Dissolved oxygen before it can be discharged into a stream, lake, river, or waterway. Healthy waters that can support life must contain dissolved oxygen.Process Control: Dissolved oxygen levels are critical to controlling the biological treatment of wastewater, as well as the biofiltration phase of drinking water production. In some industrial applications (e.g. power production) any Dissolved oxygen is detrimental for steam generation and must be removed and its concentrations must be tightly controlled.At BOQU water quality analyzer Instrument, find the water quality meter monitoring equipment, resources, training, and software you need to successfully monitor and manage dissolved oxygen levels in your specific process application. DOG-2082YSoptical Dissolved Oxygen Controller DOG-2092ProDissolved Oxygen Meter DOG-2082ProDissolved Oxygen Analyzer DOG-208Fppb Class dissolved oxygen probe DOG-208FAHigh Temperature (130C) dissolved oxygen sensor BH-485-DODigital RS485 Dissolved Oxygen Electrode
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