âCode Redâ âCode Blueâ, âCode Blackââ¦people sometimes wonder what these terms mean if they happen to hear them used in a hospital (or more likely, hear them used on a TV series about doctors).his Site Might Help You. RE: what do the hospital color codes mean? Are they generally the same in every hospital? for instance, in our local hospital I have heard the colors; pink, brown, gray, white, yellow, red, and of course, blue.
Re-Use Waste from Reverse Osmosis (RO) Filter. Many of us use Reverse Osmosis Filters (RO filters) to purify Drinking Water, in areas with high TDS (Total Dissolved Salts) content in the Water. Around 75% of the Water fed into a RO filter, is wasted. Only 25% gets extracted as drinking Water.
Usually, if pollutants come from one source into that water body, (such as a factory disposal) it is called a point source pollution. If the pollution comes from many sources, it is called nonpoint-source pollution. MORE ENVIRO LESSONS. Types of waste. Generally, waste could be liquid or solid waste. Both of them could be hazardous. Liquid and solid waste types can also be grouped into organic, re-usable and recyclable waste.