Coagulating sedimentation method / Sludge drying, Recycling drying

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 separate the particles from water by generating flocs and settling them down. The settled sludge, which is also called settled post-coagulation sludge, is disposed after condensation and dehydration processes.
In this method, amount of flocculant can be kept less and efficiency can be increased by using biological treatment or activated sludge method together, therefore, combined facilities are often used. Sludge discharged from the combined facilities is mixed sludge of waste sludge and settled post-coagulation sludge.

Drying process of the settled post-coagulation sludge is difficult since flocs are generated by flocculant and conducting heat to inner part of large particles is a hard task. By crushing and cutting during drying process, the flocs are made smaller and drying process is done thoroughly by conducting heat inside.
Our KENKI Dryer has international patented crushing and cutting mechanisms and can also dry settled post-coagulation sludge without any problems.


coagulating sedimentation method wastewater treatment sludge dryer kenki dryer 24/05/2020



Flocculation treatment / Sludge drying, Recycling drying


Types of waste water treatment / sludge drying, slurry drying, waste drying


■ Sludge drying


Water in the sludge thickened in the sludge thickener tank are removed at dehydration process to a certain degree.
However, moisture content is normally more than 80% and the sludge still has adhesiveness and stickiness. Also, latter processes are not easy because of influence of flocculants. Our drying apparatus of KENKI DRYER with international patented technology can surely dry any sticky, adhesive and viscus sludge, and also materials in liquid state like slurry, without clogging inside of the dryer. Also, because of its simple structure, its price is low and apparatus cost of the dryer can be retrieved by reducing industrial waste disposal cost within 3 years. Dried materials can be recycled as fuel, bacterial fertilizer, soil conditioner, etc. since component of the material is hardly changed because of its low-temperature drying method.
It can be applied to a system with pyrolysis apparatus as well.


Sludge drying



Please consider KENKI DRYER for drying of sticky materials, adhesive materials and materials in liquid state that no other dryer can deal with.
Initial, running and maintenance costs are low because of its simple structure based on internationally patented technology.
For sludge drying, costs of our dryers are estimated to be retrieved within 2, 3 years by reducing industrial waste disposal cost.
For raw material slurry drying, laborious works of manual operation will be decreased significantly by replacing box shaped compartment tray dryer with our dryer
In case of organic wastes drying, the waste can be recycled as fuel, fertilizer, soil conditioner and feedstuff after being dried.


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