Calcium Peroxide Uses In aquaculture, calcium peroxide can be used to release oxygen, improve water quality, eliminate pathogens, regulate the pH value of the water environment, reduce the concentration of harmful substances in water, and supplement the calcium needs of aquatic animals. In environmental protection ,calcium peroxide can be used for soil remediation and improving surface water quality . In agricultural planting ,calcium peroxide can be used to supply oxygen to plant roots , and improve soil water quality, rice seed coating , etc. In food processing ,calcium peroxide can be used for preservation of fruits and vegetables and dough improvement . In daily chemical industry, calcium peroxide in toothpaste is used as tooth cleaning agent , and it can be also used as household disinfectant deodorant .