How to clean the oil on the filter screen above the sewer in the hotel kitchen?

Ha ha! It's so simple! Now this kind of oil is bought in large quantities! You can contact to sell! This can also make a small profit! However, being recycled is definitely used to produce waste oil! If you don't want to do this, it's even harder! Wash the ground with 4-5% hydrochloric acid. The method is similar to primer painting, and it can be scraped with a knife. You can push it a few times where the oil is particularly heavy. In this process, a large number of bubbles will appear on the ground. It is normal that hydrochloric acid will corrode oily cement. Depending on the number of bubbles, it can be painted again (but not more than twice). Preparation method of concentrated hydrochloric acid (content 37%)

2. Wash the floor with alkali. Commercial caustic soda (chemical name: sodium hydroxide) is about 1kg, and water is 20 kg. Scrape the floor once to neutralize the hydrochloric acid on the floor. In this process, the amount of alkali washing can be slightly larger than that of acid washing.