| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method for treating a waste liquid for solving the problem that the waste liquid drained when a high concentration organic waste water is burned in a liquid contains a sodium carbonate or the like and has a strong pH buffering action and hence needs a long time for a neutralizing operation and a large quantity of an acid, a deterioration of an apparatus therefor is severe, further when there is an organism treating step in the following, an adverse influence is affected to a microorganism so that its operation becomes unstable, in addition, an exhaust gas containing an SOx generated by burning a boiler combustion exhaust gas or a combustible gas generated in chemicals producing step is depolluted by an exhaust gas desulfurizing apparatus and hence a large quantity of alkali agent is required therefor. SOLUTION: The method for treating the waste liquid comprises the step of effectively utilizing at least a part of an incinerated waste liquid at it is or a concentrated liquid containing the sodium carbonate obtained by concentrating as the alkali agent of the exhaust gas desulfurizing apparatus or the alkali agent for treating the waste water drained from a separate system.</p> |
