Sludge arise in wastewater treatment plant passes through condensation process first, then enter to next process called conditioning. These processes are pre-treatment steps of dehydration process which comes next, and they make sludge easier to be separated into solid matters and water depending on each types of dehydrator used in dehydration process. Conditioning is a […]

Sludge generated in wastewater treatment plants are treated by a wastewater treatment process called condensation to increase its density as a first step. Density of sludge whose ratio of solid content is less 1% or less is increased up to 4% maximum. There are mainly two types of the condensation processes which are gravity type […]

This article is about dissolved air flotation with aggregation which is one of various types of wastewater treatment. This is an advanced method of dissolved air flotation. ■ About Dissolved air flotation with aggregation   Flocculant is added to wastewater in flocculation tank and agitated to make floc by aggregating contaminants and floating matters in […]

■ About Dissolved air flotation   In settling process of wastewater treatment, water is purified by settling particles in wastewater. However, contaminants whose specific gravity is lower than water are made to be floated to water surface rather than settled down in order to be separated from water. However, contaminants whose specific gravity is lower […]

There are various kind of wastewater treatment method though, this article is about coagulating sedimentation. This is a method which is based on flocculation treatment.   ■ Coagulating sedimentation method   This is a method to add inorganic flocculant (inorganic coagulant) or polymer flocculant into small particles such as colloidal particles in wastewater, and to […]