| 摘要 |
A treating process is shown for removing cloggants from the pores and surfaces of aeration diffuser elements used in an activated sludge treatment process or the like. In this process, an acid gas is fed to the plenum chambers that support the respective elements to be treated, and water is permitted to flow from the sludge mass through the diffusers into the plenums to form the desired acid solution for reacting with the cloggants to be removed. The process is performed so that the acid solution fills the pores and contacts the surfaces of the diffusers and the plenums and the submerged piping network and the acid solution is then agitated in contact with the diffusers to react with the cloggants in the pores and on the surfaces of the diffusers to rejuvenate these elements. In another embodiment of the process, an acid solution is made to fill the aeration piping network, is fed through the plenum chambers that support the respective elements to be treated, and into the pores in said elements for reacting with the cloggants to be removed. The acid solution is reacted with the cloggants and is then agitated in contact with the diffusers and with the cloggants in the pores and on the surfaces of the diffusers to rejuvenate these elements. |
