There are two main types of sludge arise from wastewater treatment plants which are organic sludge and inorganic sludge though, ways of the sludge containing water differ depending on sludge types and wastewater treatment processes. There are mainly 4 types of conditions about water inside sludge. Dehydration and drying process is affected by the condition […]
In most of sewage factories and sewage offices, activated sludge method is used for their effluent treatment. What does activated sludge suggest in the activated sludge method? About activate sludge Activated sludge is microorganism such as bacteria and animalcule and living things found in various place such as river, water conduit, soil, etc. It also can be […]
Operation process in manufacturing industry generally includes cleaning process. Detergent is one of the substances used in the cleaning process. Detergent always contains surfactant and surfactant helps the cleaning process a lot. Then, what is surfactant? Surface Materials can be classified into three types which are solids, liquids and gases. Boundary where these phases contact is […]
What is lotus effect? Wettability changes according to shape of surface as well. Lotus leaf is one of the examples. Water which dropped on surface of lotus leaf become droplets by shaping like a sphere and catches dirt while it rolls down, so that surface of lotus leaf never gets wet. Droplet on surface of […]
Degree of wetness can be expressed with contact angle. For example, when a droplet drops on a desk, it sometimes forms round grain shape and sometimes spreads widely and flatly. For another example, surface of a clean newly bought cup gets wet easily though, surface of cup which has been used many times does not. It is […]
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