Upward flow stationary bed filter unit and method for producing same

Abstract

The invention provides an upward flow stationary bed filter unit which is characterized in that a filter chamber is arranged in a straight barrel, wherein both the upper part and the lower part of the filter chamber are cones with the taper angles of 90 degrees-120 degrees, the outer part of the upper cone is provided with an operation water outlet ring, a strainer is arranged at the inner part of the operation water outlet ring, an operation water inlet and distribution ring, a water distribution pipe and a filter media guide plate are arranged at the lower part, the center of the filter chamber is provided with a backwashing sand delivery pipe which is connected with a separation chamber at the top, a backwashing sand sucker is arranged at the bottom to be connected with the backwashing sand delivery pipe, and a filter media layer is arranged above the operation water inlet and distribution ring. A method for producing the filter unit is that an upward flow filter is designed and produced, and the backwashing filter process and connection of the filter are designed; and all the parts of the devices are produced, welded and assembled. The upward flow stationary bed filter unit has the beneficial effects that the operation flow rate is fast, the unit dirt blocking capability is strong, the backwashing equipment has small capacity, the backwashing water consumption is small, an air bump rinse system is not needed, the construction cost is low and the occupied area is small; and the filter unit can easily carry out preservative treatment and realize large scale production.

Description

technical field [0001] The present invention relates to a kind of water filtration equipment, specifically an upflow fixed bed filtration device different from the conventional filtration method, and relates to a manufacturing method of the device, which is especially suitable for large-scale equipment, suitable for urban water supply treatment, Wastewater treatment, seawater desalination and large-scale water purification in the industrial sector. Background technique [0002] Water filtration methods mainly include: membrane filtration and loose filter material as the filter layer. The filtration method with various loose filter materials as the filter layer is commonly used because of its low construction cost and economical and reliable operation, especially the downward flow filter with sand as the filter layer is the most widely used. Downward flow (that is, water enters from the upper part of the filter layer and flows out from the bottom) sand filter has the disadva...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the defects and deficiencies of the current prior art and design principles in this field, and provides an upward flow fixed bed filter device, aiming at the downward flow sand filter equipment with loose filter material as the filter layer. Due to the problems of low pollution capacity, low operating flow rate, and difficulty in large-scale equipment, the present invention has made innovations in equipment structure, operating mode, and backwashing mode, and realizes upward flow filtration without loosening the filter layer during operation. In the process, the operating flow rate is greatly improved under the premise of ensuring the quality of the effluent water (≤1 mg / L). The general operating flow rate is about 30 m / h. Since the backwashing equipment is only equipped with a small water pump, it provides the possibility for large-scale equipment ( The water treatment capacity of a single device can reach 3000 cubic meters per hour)

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