In-situ preservation system of water benzene series

Abstract

The invention provides an in-situ preservation system of water benzene series. The in-situ preservation system comprises a water surface acquisition module, a water bottom acquisition module, a control module and a sewage acquisition storage device, wherein the water surface acquisition module is used for acquiring a water surface sample, the water surface sample is stored by the sewage acquisition storage device, the water bottom acquisition module is used for acquiring a water bottom sample, the water bottom sample is stored by the sewage acquisition storage device, the control module is used for controlling the water surface acquisition module and the water bottom acquisition module and performing water sample acquisition and information acquisition, the sewage acquisition storage device comprises a pile box, a water inlet pipe and a water outlet pipe are respectively connected with a front end and rear end of the box, and a water inlet chamber, a filtering chamber, a precipitationchamber and a water storage chamber are sequentially arranged in the box from a water inlet end and a water outlet end. By the in-situ preservation system, water sample acquisition of a water surfaceand / or a water bottom of a monitoring water region can be achieved, the water samples are stored, acquisition information accuracy is stored, and the problem that petroleum hydrocarbon and the benzeneseries in the water sample volatile is solved.

Description

Technical field [0001] The invention belongs to the field of sewage collection and preservation equipment, and specifically relates to an in-situ preservation system for benzene series in water bodies. Background technique [0002] VOCs emitted by the petrochemical industry involve 8 categories of pollutants: aromatic hydrocarbons, halogenated hydrocarbons, alkanes, ketones, alcohols and phenols, among which aromatic hydrocarbons and halogenated hydrocarbons are the primary VOCs pollutants in the petrochemical industry Among them, trichloromethane, p-(m)xylene, undecane, benzene, benzaldehyde, p-dichlorobenzene, cyclohexanone, o-xylene, etc. have higher detection rates. [0003] At present, there are not many studies on the discharge of characteristic pollutants in the petrochemical industry. Although the petrochemical industry is also undergoing corporate transformation, it is committed to environmental protection and safety first. The environmental impact report also makes strict...

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Problems solved by technology

[0004] Now the Environmental Protection Agency often conducts sampling and spot checks on the sewage discharged by chemical enterprises, and also conducts sampling and spot checks on the waters or seas where the sewage is discharged. However, when sampling, it is often only sampled on the water surface, often ignoring underwater sampling, and the storage device is not very good after sampling. Improve the partial volatilization of petroleum hydrocarbons and benzene series in water samples, causing deviations in the data of pollutant detection and evaluation

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