Drying of soil mixed with pebbles / Test cases Material to be dry: Soil mixed with pebbles Purpose of drying: Soil conditioner Moisture content: 30％W.B. before drying, 5％W.B. after drying Requirements for dryer: No clogging inside of the dryer since materials being dried are mixed pebbles. 24-hour unattended operation. No change in components […]
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 […]
Chemical factory sludge drying / Test cases Material to be dry: Chemical factory sludge Purpose of drying:The costs reduction of industrial waste disposal Moisture content: 80％W.B. before drying, 10％W.B. after drying Requirements for dryer: No clogging inside of the dryer since materials being dried are adhesive. 24-hour unattended operation. Test result: OK […]
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 […]
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