Method suitable for intermittent operation of biological activated carbon filter tank

Abstract

The invention discloses a method suitable for intermittent operation of a biological activated carbon filter tank. The method comprises the following steps: S1, controlling water height in a carbon tank to submerge activated carbon in the carbon tank when the biological activated carbon filter tank stops operating, and changing water of the carbon tank at set intervals until the biological activated carbon filter tank operates again; S2, back flushing the biological activated carbon filter tank before the biological activated carbon filter tank operates again; S3, opening a water inlet / outlet valve and starting an ozone generator after back flushing finishes until a DOC and DON removal rate reaches a normal operation level; S4, adjusting a water inlet flow and an ozone adding amount to the size in normal operation, and beginning operating the biological activated carbon filter tank. The method disclosed by the invention has the advantages of effectively shortening restarting time of the biological activated carbon filter tank, thus enabling the biological activated carbon filter tank to be quickly put into production, obviously improving a production procedure of a tap water plant, reducing production cost of the water plant, saving resources and energy, and achieving higher practicability and wide applicability.

Description

technical field [0001] The invention relates to an operation method, in particular to a method suitable for intermittent operation of a biological activated carbon filter. Background technique [0002] The ozone-biological activated carbon process is based on the conventional water treatment process, adding two operating units, the ozone contact column and the activated carbon filter. [0003] This process is a combination of ozone oxidation and biological activated carbon filter, which combines three technologies of ozone chemical oxidation, activated carbon physical and chemical adsorption, and biodegradation. It can effectively remove pollutants in water and improve the quality of effluent water. Therefore, it is widely used. Apply domestic waterworks. [0004] For some drinking water sources, there will be seasonal bursts of pollution. When this phenomenon occurs, the raw water can reach the standard only after advanced treatment with ozone-biological activated carbon,...

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Problems solved by technology

However, during the shutdown period, the microorganisms on the activated carbon were severely damaged, which made it take a long time to restore the removal efficiency of the biological activated carbon filter when it was restarted, and delayed the actual production process of the waterworks

[0005] There are few researches on the preservation method of biological activated carbon filter during intermittent periods and the operating parameters when it is restarted. At present, the actual production process of waterworks is mostly guided by experience. It takes about 5 to 15 days to return to normal when restarted. run

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