Search for question
Question

Metal concentrations in wastewater sludges are often expressed in terms of grams of metal per kilogram of total dry solids. A wet sludge has a solids concentration of200,000 mg/L, and

8000 mg/L of these solids are zinc. a. What is the concentration of zinc as g Zn/g dry solids? b. If this sludge is to be applied to farmland and spread on pastures used by cows,explain how you might monitor the project with regard to the potential environmental or health effects caused by the presence of the zinc.

Fig: 1

Fig: 2

Fig: 3