Prevention of biofouling of reverse osmosis membranes

Details Prevention of biofouling of reverse osmosis membranes Prevention of biofouling of reverse osmosis membranes

1989-05-12

1991-01-29

Hruskoci, Peter

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210639, 210754, 210764, 422 29, 422 37, C02F 176

Patent

active

049884441

ABSTRACT:
An improved process is disclosed for killing and inhibiting growth and reproduction (aftergrowth) of microorganisms comprising adding sufficient chloramine to kill the microorganisms without oxidizing high molecular weight organics, which are not easily assimilated by organisms that survive, into lower molecular weight ones, which are easily assimilated.

REFERENCES:
patent: 2061031 (1936-11-01), Henderson
patent: 4239622 (1980-12-01), Ridgway
patent: 4278548 (1981-07-01), Bettinger et al.
patent: 4364835 (1982-12-01), Cheh
patent: 4711722 (1987-12-01), Toyoshi et al.
Charlton and Levine, "The Halogens", p. 402, FIG. 48 (1935).
Ridgeway et al.; Biofilm Fouling of RO Membranes-Its Nature and Effect on Treatment of Water for Reuse-Journal AWWA, Jun. 1984, pp. 94-102.
Applegate et al.; Monitoring and Control of Biological Activity in Permasep.RTM. Seawater RO Plants-Elsevier Science Publishers B.V., Desalination, 65 (1987), pp. 331-359.
Pohland et al.--Successful Operation of a Permasep Permeator Reverse-Osmosis System on Biologically Active . . . Water,--Amer. Chem. Society, 1981, pp. 399-406.

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