Which type of industrial plant is noted for producing wastes with a high suspended solids content?

The correct response highlights breweries as industrial plants characterized by producing wastes with a high suspended solids content. This is primarily because the brewing process involves the use of grains, which generate substantial solids during mashing and fermentation. These solid residues are typically released in the wastewater, contributing to elevated suspended solids levels. Additionally, the cleaning processes in breweries, which involve water usage for cleaning equipment, further increase the potential for solid waste in wastewater.

In contrast, other types of facilities, although they may produce wastewater, differ significantly in their waste profiles. For example, steel mills produce wastewater that can have high concentrations of metals and hydrocarbons, but they do not generally involve a high volume of suspended solids in the same context as breweries. Pulp and paper mills are also known for producing suspended solids but the composition differs, often involving fibers and chemicals rather than the grain residues typical in breweries. Textile manufacturers may generate wastewater with dyes and chemical residues but not necessarily high levels of suspended solids related to organic matter as found in brewery waste. Thus, breweries stand out for their specific contribution to high suspended solid content in wastewater due to their production processes.