Waste water treatment process

Details Waste water treatment process Waste water treatment process

1990-07-09

1991-09-24

Wyse, Tom

Liquid purification or separation

Processes

Chemical treatment

210754, 134 3, 134 2212, 134 39, 261122, C02F 320

Patent

active

050511939

ABSTRACT:
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 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 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. 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.

REFERENCES:
patent: Re33177 (1990-03-01), Schmit et al.
patent: 2684330 (1954-07-01), French
patent: 2686138 (1954-08-01), Klein
patent: 2826209 (1958-03-01), Klein
patent: 3150007 (1964-09-01), Kovachy
patent: 4238244 (1980-12-01), Banks
patent: 4382867 (1983-05-01), Schmit et al.
patent: 4402758 (1983-09-01), Hobbs
patent: 4419141 (1983-12-01), Kunkel
Manual of Practice No. 5, "Air Diffusion in Sewage Works", Federation of Sewage & Industrial Wastes Assn.; pp. 48-62 (1952).

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