Reuse of waste water in battery manufacture

Details Reuse of waste water in battery manufacture Reuse of waste water in battery manufacture

1980-09-29

1982-01-12

Adee, John

Liquid purification or separation

Processes

Including controlling process in response to a sensed condition

210765, 210 961, 210205, 134 18, C02C 502

Patent

active

043104215

ABSTRACT:
A battery manufacturing operation employs a first NaOH solution for washing an intermediate product generating a waste caustic, and a second NaOH solution for impregnation. In addition, quasi-periodically a fixed quantity of waste wash water is available. The invention includes a process, and an apparatus for carrying out the process, for using the waste wash water as one component of the second NaOH solution, to which is automatically added fresh NaOH until a specific NaOH solution (25% NaOH), by weight is obtained. Thereafter, the waste caustic is added resulting in the second solution. The process is effected typically automatically notwithstanding variations in the components of the waste water, and normal variations in the flow rates, etc.

REFERENCES:
patent: 1943684 (1934-01-01), Martin et al.
patent: 3714039 (1973-01-01), Lancy et al.
patent: 3715308 (1973-02-01), Sulfano
patent: 4226714 (1980-10-01), Furness et al.

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