Ultraviolet oxidation process and device for intermittent in-situ quick resolution of total phosphorus and total nitrogen
An oxidation method and intermittent technology, applied in the field of measurement, can solve the problems of manual analysis, retention, cumbersome operation, etc., and achieve the effects of easy temperature control, simple and reasonable structure, and high digestion efficiency
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Embodiment 1
[0026] Such as figure 1 , figure 2 As shown: the intermittent online total phosphorus and total nitrogen digestion device is composed of a stainless steel digestion cup body 10, a top cover 5, an outer double heater 13, two special double ultraviolet low-pressure mercury lamps 1, a magnetic stirrer 19, and a stirring rod 18.
[0027] The stainless steel digestion device is composed of a cup body 10 and a top cover 5. The digestion cup body is provided with an overflow port 11, a water sample inlet 15, a water sample outlet 17, and a waste discharge port 29; the top cover is provided with a digestion agent inlet 21, The ultraviolet light source passes through the hole 22 and the temperature detector inlet 23; two dry heaters 13 are symmetrically arranged on the outside of the cup body, and the temperature detector passing through the hole 23 is a 18B20 digital temperature detector 2; the ultraviolet light source passing through the hole 22 is a double ultraviolet A low-pressu...
Embodiment 2
[0037] In the equipment of the above-mentioned Example 1, 40 kg of water and 8 kg of sodium persulfate were added as the digestion agent at a constant temperature and normal pressure of 15°C, and an ultraviolet light source was used to digest the components of the water sample, and the decomposition efficiency was 90%. above.
Embodiment 3
[0039]In the equipment of the above-mentioned Example 1, 40 kg of water and 17 kg of potassium persulfate were added as the digestion agent. Under the constant temperature and normal pressure of 70 ° C, the components of the water sample were digested by using an ultraviolet light source, and the decomposition efficiency was 97%. above.
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