Flour mill operating in residential area causing noise pollution

Flour mill operating near by shop , where in shop 10 to 10 feet only having three machine installed , whenever machine operate high noise pollution , no piece of mind and resident surrounding suffering a lot , because of the owner running shop is from govt municipal and threatening other i have valid license and some of near resident given NOC 10 years back . Old age people and kids education are getting affecting , Formal information given to concern flour mill owner , seems he is not concern about other issue .very annoying and some reason getting mental depression