| 摘要 |
PROBLEM TO BE SOLVED: To provide a water quality improving agent, which is safe, inexpensive and has excellent effect on the decomposition and the removal of a harmful matter. SOLUTION: The water quality improving agent formed from disposed ores and disposed shells is provided. The water quality improving agent contains one or more kinds selected from a group composed of feldspars, biotities, zeolite, rutile, amphibole, tourmaline, activated clay, diatomaceous earth, radium, germanium, potassium and platinum as the ores. The water quality improving agent contains one or more kinds selected from the group consisting of oyster shell, scallop shell and surf clam shell as the shells. The water quality improving agent is a powdery material or a solid ceramic. |
