Block · one region of the page, as the scanner read it. It may hold a whole story, part of one, several, or an advertisement; stitching blocks into articles is the next step. Text is supplied OCR.
Page 1 · column 3 of 6 · from the scan, no model involved
genated, tank inside.
Gases emanating from the enclosed aerobic tank pass through filters to eliminate odors.
The wastewater is next cycled into open aerobic reactors. Floating racks support a wide variety of specially selected plant species whose large root masses convert ammonia to stored nitrogen, free up oxygen , in the wastewater, and consume some of the solid waste material.
Harmful metals and diseasecausing bacteria are also reduced by the plants, permitting microbes to reproduce and help break down the wastes further.
The water is recycled through the system until it is suitable for use in toilet flushing, irrigation, or other non- potable uses.
Artificial wetlands have been used by the mining industry to remove metals from waste water or
95.9%