Multifunctional integrated filter element combination device for sandstone geothermal water treatment

Abstract

The invention provides a multifunctional integrated filter element combination device for sandstone geothermal water treatment. The device comprises a shell, a slurry opening, an ultrasonic generator connector, an aeration opening, membrane module supports, membrane modules, a liquid distribution pipe, a liquid inlet, a liquid outlet, an automatic vent, a cyclone, a central pipe, liquid gathering pipes, a manhole, an aerator pipe, an ultrasonic vibrating plate and a leg. The device is characterized in that the three kinds of filter elements including the cyclone, the ultrasonic vibrating plate and the flat plate microporous ceramic membranes are effectively and ingeniously connected, thus meeting the function and standard requirements; separation of dissolved gas in geothermal water and invasive gas is integrally achieved and solid particles harmful to the environment are intercepted in the high-concentration chloride ion environment by using the cyclone, the ultrasonic vibrating plate and the ceramic membranes for interception; a newly developed folding membrane filter has super-large filter area and has smaller volume under the condition of the same filter area, so that the filter has low site requirements; and the folding membrane filter is convenient to install, has greatly reduced requirements for the maintenance space and is more suitable for the operation site requirements of users.

Description

technical field [0001] The invention is used for the separation of geothermal exploration, geochemistry, environmental protection, and other industries, and relates to an integrated device for degassing, impurity removal, and oil removal, especially a sandstone geothermal tail water recharge system that uses ultrasonic additional rotary A multi-functional integrated device and method for flow degassing, coupled with flat ceramic membrane filtration for impurity removal and oil removal, specifically a multi-functional integrated filter element combination device for sandstone geothermal water treatment, which belongs to the innovation of filtration and separation technology field. Background technique [0002] In the application of geothermal energy, the geothermal water is first raised to the ground through the production well, and after the heat energy is extracted, the tail water is refilled to the original underground layer through the injection well; the geothermal tail ...

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Problems solved by technology

[0003] At present, the existing degassing, impurity removal and oil removal treatment methods and devices for sandstone geothermal recharge tail water are all independent equipment through system integration, so as to realize the functions of degassing, impurity removal and oil removal, but the existing technology has the following Disadvantages: usually separate degassing equipment, filter and degreasing equipment and filter degreasing equipment are used comprehensively for system integration, and the functions of degassing, impurity removal and oil removal are realized through multi-level treatment, and the system configuration and equipment investment are high. The process is complicated, the operation is complicated, and the floor space is large; the filtration and impurity removal usually adopts the combined filtration form of sand filter, scraper filter and core filter, and high-precision filtration can be achieved by gradually improving the filtration accuracy. It can realize coarse filtration, easy diafiltration, long backwash regeneration time, and large water demand; scraping filter and some core filters can realize online backwash regeneration, but the filtration flux is low in high-precision filtration, and it can handle large flow Liquid requires a large filtration area to meet the demand, and there are disadvantages that it is difficult to completely strip solids during backwashing operation, and the backwashing regeneration effect is poor; some core filter elements cannot be regenerated, and when the particles are fine and the solid content is high, use After a period of time, the filter screen or filter element will produce non-renewable clogging, and the filter element must be replaced frequently, resulting in increased costs

[0004] Oil removal by filtration usually adopts the method of adsorption and oil removal. Walnut shell filter or activated carbon filter is used. The adsorption performance of the filler gradually reaches saturation with the progress of filtration, and the oil removal efficiency gradually decreases. The efficiency of adsorption and oil removal is greatly affected by operating conditions. The filtration is serious, and the consumption of backwash regeneration public works is large; the material application of filter equipment and filter elements has its own limitations; the corrosive working conditions of high temperature, acidic, alkaline or organic solvents, especially in the case of chloride ion corrosion , the material cannot meet the corrosion and temperature requirements or the equipment investment is high, the filter element is easy to wear and tear, and the cost of equipment replacement and maintenance is high

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