Method for increasing the cross-flow microfiltration fluxes of w

Details Method for increasing the cross-flow microfiltration fluxes of w Method for increasing the cross-flow microfiltration fluxes of w

1980-05-23

1982-02-02

Hruskoci, Peter A.

Liquid purification or separation

Processes

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

210651, 210717, 210778, B01D 1300

Patent

active

043138306

ABSTRACT:
A method for increasing the cross-flow microfiltration fluxes of waste waters containing suspended solids and/or emulsified oil through microporous thermoplastic tubes by including therein a calcium compound selected from Ca(OH).sub.2 or CaSO.sub.4. The calcium compound is present in the waste waters in an amount ranging from above the solubility limit of the compound to about forty (40) percent by weight of the waste waters. The Ca(OH).sub.2 can be added directly to the waste water. The CaSO.sub.4 can be included by reacting H.sub.2 SO.sub.4 and Ca(OH).sub.2 in the waste waters to form CaSO.sub.4 in situ. Alternatively, wet CaSO.sub.4 can be formed by reacting H.sub.2 SO.sub.4 with Ca(OH).sub.2 outside the water and then added to to the waste waters in the required amount.

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Santo et al., "Removal of Heavy Metals from Battery Manu. Wastewaters by Hydroperm.TM. Cross-Flow Microfiltration," Presented at 2nd Conf. on Adv. Poll. Cont. for Metal Finishing Industry, Feb. 5-7, 1979, pp. 123-130.

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