Microbe-based iron and manganese removal device and microbial filtration method

Abstract

The invention discloses an iron-and-manganese removing device based on microorganisms and a microorganism filtering method. The device comprises a first submersible pump, an aeration pool, a microorganism filtering device, a second submersible pump, a back washing pool, a clean water pool, a water storage box and an aeration device. The first submersible pump is arranged between the aeration pool and an underground well, the aeration pool is provided with the aeration device, the aeration device comprises an air compression pump and an aeration disc which are connected through an aeration pipe, and a lifting device is arranged at the upper end of the aeration disc; the aeration pool is sequentially connected with the microorganism filtering device, an outlet tee joint is arranged at the lower end of the microorganism filtering device and is respectively connected with the back washing pool and the clean water pool, and the second submersible pump is arranged between the back washing pool and the outlet tee joint; the microorganism filtering device comprises a top cover, a filtering column, a bottom cover and a transversely-moving cart, the top cover, the filtering column and the bottom cover are connected from top to bottom and are detachably connected, and the transversely-moving cart is used for supporting the filtering column; the water storage box is connected with an overflowing pipe at the upper portion of the filtering column.

Description

technical field [0001] The invention relates to the field of water quality treatment, in particular to a microbial-based iron and manganese removal device and a microbial filtration method. Background technique [0002] In many areas of our country, the content of iron and manganese in groundwater is high, which exceeds or far exceeds the sanitary standards of drinking water and industrial water standards, which seriously affects its use value, so it must be removed. [0003] At present, the water quality treatment of groundwater mostly uses microorganisms to remove iron and manganese, but in the process of microbial iron and manganese removal, the divalent iron in groundwater is oxidized by chemical oxidation or iron-oxidizing bacteria into ferric oxide, which is attached to the filter material or be intercepted by the filter material; divalent manganese is oxidized by manganese oxidizing bacteria into manganese dioxide, which is attached to the filter material; while backw...

AI Technical Summary

Problems solved by technology

However, most of the filtration devices of the existing microbial iron and manganese removal devices are integrated structures, which is inconvenient to check the use of the intermediate filter column and replace the intermediate filter column; secondly, the backwash water contains some manganese-oxidizing bacteria and iron-oxidizing bacteria. It will be discharged to the outside with the backwash water, resulting in a waste of resources; in addition, the existing aeration device is not accurate enough to control the concentration of dissolved oxygen in groundwater, resulting in a waste of energy

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