Just a little hint: MEB is SEM in English (that would attract more people who answer).
When you say you want to analyze the SEM without EDX: What do you want to know? From the image you can see that you have some 90° angles which would be expectable for NaCl and all other kinds of cubic structure salts, but of course the chemical composition is not available without EDX/XPS or maybe also a mass spectrum of your water sample.