Method for producing slime inhibitor for separation membrane, slime inhibitor for separation membrane, and method for suppressing slime of separation membrane
PROBLEM TO BE SOLVED: To provide a one-component slime inhibitor for a separation membrane capable of suppressing a decrease in the amount of permeated water even when the pH of water supplied to the separation membrane or washing water is 5.5 or less. SOLUTION: A slime inhibitor for a separation membrane containing a bromine-based oxidizing agent, a sulfamic acid compound, an alkaline agent, a nitrite, and water, and having a molar equivalent ratio of water to nitrite ions derived from the nitrite of more than 6. Is. [Selection diagram] None【課題】分離膜への給水や洗浄水のｐＨが５．５以下であっても透過水量の低下を抑制することができる１液系の分離膜用スライム抑制剤を提供する。【解決手段】臭素系酸化剤とスルファミン酸化合物とアルカリ剤と亜硝酸塩と水とを含み、前記亜硝酸塩に由来する亜硝酸イオンに対する水のモル当量比が６より大きい、分離膜用スライム抑制剤である。【選択図】なし
