A rainwater oil pollution separation and filtration device

Abstract

The invention discloses a rainwater oil pollution separating and filtering device which comprises a settling cylinder connected with an upstream pipeline, an oil collecting cylinder connected with a downstream pipeline, and a separating and filtering pipe connected between the settling cylinder and the oil collecting cylinder, wherein a dip angle of 0.5-3 degrees is formed between the filtering pipeline and the horizontal plane; two ends of the separating and filtering pipe are respectively connected with a water outlet of the settling cylinder and a water inlet of the oil collecting cylinder; the water inlet of the oil collecting cylinder is higher than the water outlet of the settling cylinder; oil pollution separation grating plates on the upper layer and settling grating plates on the lower layer are arranged in the separating and filtering pipe; solid baffles which are vertically arranged are arranged in the oil collecting cylinder; the bottom of each solid baffle is not higher than the bottom of the water inlet of the oil collecting cylinder; and water through gaps are reserved between the bottom of each solid baffle and the bottom of the oil collecting cylinder. Sediment and oil dirt can be effectively separated, the horizontal flow velocity is reduced by over 4 times, and the settling efficiency is improved by over 4 times; and moreover, the separating and filtering pipe is in the dip angle design, so that the oil pollution separation efficiency is improved, and the oil dirt can be conveniently cleaned by the device.

Description

technical field [0001] The invention relates to the technical field of rainwater collection and pretreatment, in particular to a rainwater, oil and dirt separation and filtering device. Background technique [0002] Due to the uneven distribution of water resources in time and space, coupled with the unreasonable exploitation and utilization of water resources and the serious waste of human beings, as well as the improvement of the degree of industrialization and the aggravation of water pollution in the process of urban development, the contradiction of water use has become more and more prominent. , water shortage has become a worldwide problem. Rainwater is the most fundamental, direct, and economical water resource, which has been recognized by countries all over the world. As a supplementary water source, rainwater has been paid more and more attention. [0003] Rainwater falls to the ground to form runoff, which will contain a large amount of particles such as sedimen...

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Problems solved by technology

[0003] Rainwater falls to the ground to form runoff, which will contain a large amount of particles such as sediment and floating objects. If the particles and floating objects in the rainwater are not intercepted and discharged directly into natural water bodies, the natural water bodies will be polluted. At present, most of the rainwater Using the treatment method of filter screen filtration and filter mass filtration, the rainwater is simply filtered and pretreated, but the filter screen can only filter coarse particles and floating objects, and has little effect on fine particles; if filter mass filtration is used, it will take longer. Blockage, hindering the discharge of rainwater and causing urban waterlogging, frequent replacement of filter media will lead to high maintenance costs

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