The soda ash and lime dosages were considered separately in the
"input". (Table 10) Since the preponderance of the sludge is calcium
carbonate, and since there is no convenient way to separate the
magnesium hydroxide present, the weight of the sludge was considered
to be all calcium carbonate. Table 10, "SALT AND CHEMICAL BALANCE",
shows the chemical balance. The input is 12,446 pounds compared with
the output of 12,940 pounds, both as calcium carbonate. A reasonable
balance is indicated.