STREAM-POLLUTION BY ACID-IRON WASTE.
Stream-pollution by ironworks effluents has always been an important question in countries where the iron industries are prominent. The polluting liquors, commonly known as “acidiron” liquors, are derived from the “pickling process” common to galvanising, tin-plating, tube and sheet-iron treatment. This “waste pickle” is a most undesirable addition to streams (1) because it produces a reddish discoloration and turbidity, making the stream waters, bed, and hanks unsightly; (2) because, hy reason of its avidity for oxviren, it robs the waters of their natural supply of this essential gas and thereby, when it is present in comparatively large quantities, causes the death of fish: and (3) because it gives rise to a large quantity of iron in the stream and therehv impairs the usefulness of the water for domestic and laundry purposes and for certain manufacturing processes.
Stream-pollution by ironworks effluents has always been an important question in countries where the iron industries are prominent. The polluting liquors, commonly known as “acidiron” liquors, are derived from the “pickling process” common to galvanising, tin-plating, tube and sheet-iron treatment. This “waste pickle” is a most undesirable addition to streams (1) because it produces a reddish discoloration and turbidity, making the stream waters, bed, and hanks unsightly; (2) because, hy reason of its avidity for oxviren, it robs the waters of their natural supply of this essential gas and thereby, when it is present in comparatively large quantities, causes the death of fish: and (3) because it gives rise to a large quantity of iron in the stream and therehv impairs the usefulness of the water for domestic and laundry purposes and for certain manufacturing processes.
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