First, what is “sludge”? In brief, it is a general term for muddy materials and has very wide scope.It is divided into organic sludge and inorganic sludge regarding to its chemical property.Sludge is derived from wastewater treatment, sewage treatment, various kind of plants and construction sites, and it is categorized as industrial waste sludge and […]
The continuation of previous content About moisture contents (1) / sludge drying, slurry drying, waste drying Also, moisture content is divided into “critical moisture content” and “equilibrium moisture content”.“critical moisture content” is the moisture content during a transition from constant rate period to falling rate period which are mentioned in the article “About drying process” […]
First, what is moisture contents? In short, it is a ratio of the quantity of water contained in a material.However, there are two ways of expression for the ratio that are “mass ratio” and “volume ratio”.The expression of “mass ratio” is usually used. The expression of “mass ratio” is usually used.In addition to that, there […]
About drying process Drying process can be divided into 3 steps briefly.It starts with “drying and preheating period” and moves to “constant rate period”, then “falling rate period” follows them. First of all, what is “drying and preheating period”? It suggests a period that drying rate is low while the substance itself is being heated […]
Combustion and explosion What is combustion, or burning in other words? Combustion is also called oxidation which means a chemical reaction that material combines with oxygen, and the material emits heat and light.Combustion needs oxygen to oxidize, however, additional energy for ignition is also necessary. There are several types of ignition energy such as flame, […]