Method for entrapping and inactivating aquatic organisms in biological activated carbon filter (BACF)

Abstract

The invention discloses a method for entrapping and inactivating aquatic organisms in a biological activated carbon filter (BACF). The method is realized in the following way: a quartz sand underlayer and a disinfectant mixing feeding system are additionally arranged on the foundation of the BACF; the quartz sand underlayer is positioned under an active carbon layer and is used for entrapping theaquatic organisms; perforated water collection branches and perforated water distributing branches, which are in the disinfectant mixing feeding system, are positioned on the interface of the active carbon and the quartz sand, and are used for collecting part of the water filtered by the active carbon, and preparing and feeding the disinfectant; and the water flow, which is downwardly filtered bythe BACF, is used for inactivating the aquatic organisms entrapped in the quartz sand underlayer. The inactivating process is completed in the quartz sand underlayer, and the feeding of the disinfectant does not influence the functions of adsorption and biodegradation of the BACF, thereby ensuring that the inactivating operation does not change the conditions for the filter operation of the BACF.In addition, the capillary water flow force characteristic of the filtered water flow is utilized to accelerate the mass transport process from liquid phase to aquatic organism wall, thereby enhancing the contact inactivating effect and saving the feeding amount of the disinfectant.

Description

Technical field

[0001] The invention belongs to aquatic organisms treatment technology, and relates to a biological activated carbon filter aquatic organisms interception and inactivation method, which is used to inactivate aquatic organisms appearing in a water purification process, and is particularly suitable for inactivating a large number of rotifers breeding in the biological activated carbon filter , Cyclops, Chironomid larvae, Fairies and nematodes and other aquatic organisms. Background technique

[0002] Water supply companies are faced with the double pressure of increased water source pollution and the increase in water quality standards. In order to effectively cope with the above pressure, ozone-biological activated carbon filter technology (O 3 -BAC) the core deep processing technology has been widely used. O 3 -BAC process water treatment technology, as a deep purification process, was first developed by the former Federal Water Supply Company of Bremen, Germany i...

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