Oily and salty sewage treatment system and treatment method based on solar energy storage

Abstract

Disclosed is an oily and salty sewage treatment system and treatment method based on solar energy storage. In the system, the demulsification filter is connected to the sewage pretreatment unit through the first valve to receive sewage at a predetermined flow rate, so that the sewage oil and water are separated, and the dielectrophoresis oil-water separator is electrically Connect the battery, the dielectrophoresis oil-water separator is connected to the demulsification filter through the second valve to separate the sewage oil and water into oil and water quality, and the input end of the electro-adsorption desalination device is connected to the water-side post-processing end through the third valve to introduce water quality. The positive electrode plate and the negative electrode plate of the adsorption desalination device are respectively connected to the inverter controller, and the inverter controller is connected to the battery, wherein, when the third valve is opened, the positive electrode plate and the negative electrode plate generate an electric field to absorb the salt in the water quality To separate the salt in the water, the plate cleaning device is connected to the electro-adsorption desalination device through the fourth valve. When the third valve is closed, the fourth valve is opened, and the plate cleaning device cleans the positive and negative plates.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an oily and salty sewage treatment system and treatment method based on solar energy storage. Background technique [0002] In the process of oil extraction, transportation, loading and unloading, processing and use, the pollution caused by leakage and discharge of oil is becoming more and more serious. About 4 million tons of oil are leaked or discharged into the marine environment every year in the world. Moreover, industrial production, aerospace, domestic wastewater and national defense facilities all have the demand for purification treatment of oily water and water-containing oil. Purification of oily water and water-containing oil has always been It is an important link in the relevant production process, an important means to improve product quality and economic benefits, and is also a requirement for environmental protection emissions. [0003] Oil in oily wate...

AI Technical Summary

Problems solved by technology

Physical methods include centrifugal method, cyclone method, sedimentation method, gas flotation method, etc., all of which are time-consuming and inefficient

[0005] The advanced treatment and desalination technology for ocean water from oil spills and industrial sewage is mostly a double-membrane process, that is, UF+RO, but because UF and RO in this process are particularly sensitive to oil and heavy metals, and the temperature of incoming water is unstable and Influenced by factors such as changes in the amount of dosing in the previous stage, the double-membrane method has low water production rate, frequent membrane replacement, and high failure rate in practical applications.

As a result, the operation effect is very unsatisfactory, causing the entire process flow to be unsmooth, and the pass rate of the effluent is difficult to guarantee, which affects the return water quality of the water system

In actual engineering, although strict pretreatment methods are adopted for the above situations, the operation effect is still difficult to improve

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