Automatic backwashing and filtering device and method of low-temperature multi-effect distillation seawater desalination system

Abstract

The invention relates to the technical field of seawater desalination, in particular to an automatic backwashing and filtering device and method of a low-temperature multi-effect distillation seawater desalination system, the IPC classification number is C02F, the automatic backwashing and filtering device comprises a shell, an automatic control device, a water inlet pipeline, a water outlet pipe, a blow-off pipe and a filtering device body, the automatic control device is connected to one side of the shell, the water inlet pipeline is arranged at the front end of the shell, and the blow-off pipe is arranged at the rear end of the shell; the two ends of the water inlet pipeline are connected with the upper end and the lower end of the shell respectively, the water outlet pipe and the blow-off pipe are connected to the two sides of the shell respectively, and the filtering device is installed in the shell. A first water chamber and a second water chamber are arranged in the shell. The upper water inlet and distribution device and the lower water inlet and distribution device are used for independently supplying the dual-modular filtering device which is standby for each other, the backwashing effect is remarkably improved by utilizing a combined action mode of overclocking oscillation, cyclone filter screens and aeration disturbance, and the device has the advantages of shortening the shutdown time, being high in automation degree, stable in operation performance, capable of realizing online continuous operation and remarkable in effect.

Description

technical field [0001] The invention relates to the technical field of seawater desalination, in particular to an automatic backwashing filtration device and a method thereof for a low-temperature multi-effect distillation seawater desalination system, and the IPC classification number is C02F. Background technique [0002] At present, the low-temperature multi-effect seawater desalination system process refers to the desalination water production technology that controls the maximum evaporation temperature of the raw seawater to be below 70 °C. The outer surface of the heat exchange tube bundle of the evaporator is distributed as a thin film, which flows from top to bottom. Part of the seawater absorbs the latent heat of the condensed steam in the heat exchange tube and vaporizes, and the remaining concentrated seawater is pumped into the next effect group of the evaporator through the feed pump. , repeat the above process to realize the desalinated water production process...

AI Technical Summary

Problems solved by technology

[0006] The present invention is mainly aimed at the low-temperature multi-effect seawater desalination system filter device with single structure, large space occupation, high equipment cost, long downtime, low work efficiency, cumbersome cleaning implementation, low degree of automation, unable to realize continuous automatic backwashing of the filter device for a long time Issues such as cycle efficient and stable operation

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