Is mainly composed of calcium magnesium sulfate, chloride and nitrate as the hardness of the form salts.
主要是由钙镁的硫酸盐、氯化物和硝酸盐等盐类所形成的硬度。
Tungstocobalt heteropoly salts were synthesized using sodium tungstate and cobalt nitrate as materials.
本文以钨酸钠和硝酸钴为原料合成了钨钴杂多酸盐。
The results show that soluble compounds such as sodium chloride, sodium nitrate and a part of chromium salts can be washed out from the sludge.
试验结果表明：氯化钠、硝酸钠和部分铬盐等可溶性化合物可以从渣泥中洗出；
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