Oil concentration rapid detection apparatus for oily sewage

Abstract

The invention discloses an oil concentration rapid detection apparatus for oily sewage, comprising a micropump, a capacitance detection electrode, a micro-channel chip, a body case, a capacitance amplifier, a signal acquisition card, a microprocessor, a display, a printer, and an alarm. A micro channel and the capacitance detection electrode are integrated in the micro-channel chip. A cross section of the micro channel has a rectangular shape. The micro channel comprises an inlet section, a detection section, and an outlet section. The microprocessor is provided with built-in programs of signal acquisition, filtering, comparison, analysis and counting, and data processing. In the invention, the micro-channel chip technology is used, detection members have small sizes, a detection circuit has high integration, signal processing and computing are mainly completed by the microprocessor, and therefore equipment has a relatively simple structure. The micro-channel chip of the invention can be repeatedly used, is rapid in detection, has little sample consumption, has low energy consumption, has common and relatively cheap equipment working parts, and therefore overall cost is relatively low. The oil concentration rapid detection apparatus for oily sewage is simple to operate, has a circuit board of high integration, has a compact structure, is convenient for carrying, and is convenient for on-site detection.

Description

technical field [0001] The invention relates to an oil concentration detection device, in particular to a rapid detection device for oil concentration in oily sewage. Background technique [0002] With the development of shipping industry and industry, the use of petroleum products is also increasing, followed by the discharge of oily sewage generated after ship operation and industrial production. After the oily sewage is discharged into the water body, an oil film will be formed on the water surface, which will hinder the transfer of oxygen in the atmosphere to the water body, and cause the aquatic organisms to die in a state of anoxic state. Moreover, once the oil is emulsified, it takes a long time to degrade, causing serious pollution to inland rivers and ocean water bodies. Article 13 of the "Marine Environmental Protection Law of the People's Republic of China" and Article 11 of the "Regulations of the People's Republic of China on the Administration of Offshore Oil ...

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Problems solved by technology

The oil concentration meter made by the infrared absorption method has high test accuracy and is not affected by the impurity content, color and oil particle size of the sample. However, the infrared absorption method needs to use highly toxic extractants such as carbon tetrachloride, which is harmful to health, and its structure It is also relatively complicated and expensive; the oil concentration meter made by the fluorescence method has the advantages of continuous monitoring of the oil concentration in drainage, simple structure, and easy maintenance. Fluorescence intensity varies with oil products, the application range is relatively small, and the accuracy is low; the oil concentration meter of the ultraviolet absorption method can measure the oil concentration of the oil-water mixture in the dispersed state according to the original oil and water, but it needs to make different comparisons according to different oil products Curve, mixed oil measurement is difficult, data comparability is poor, low precision, has been basically eliminated; optical turbidity oil concentration meter has the advantages of simple operation, no extraction agent, etc., but it is easily affected by impurities other than oil, Oil samples need to filter impurities and keep the particle size of the oil in the drainage below 5um, the measurement range is small, and the equipment is inconvenient to carry, which is not convenient for rapid quantitative detection

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