In the simplest terms, dewatering is the removal of liquids from a sludge slurry. The process involves using one of three dewatering techniques. The three techniques are plate and frame filter press, centrifuge and belt press. These techniques are used in wastewater treatment plants, power plants, refineries, and drinking water facilities to reduce the volume…
Sewage sludge formed during their mechanical, biological, and physicochemical treatment refers to difficult-to-filter colloidal suspensions, sometimes containing specific inclusions in the form of fats, oils, petroleum products, etc. Currently, the sewage treatment plants (STP) mostly utilize belt filter presses, centrifuges, and multi-disc screw press dehydrators for sludge dehydration. We are well aware of the common…
The sludge in oil refinery sludge source The sludge in the sewage treatment plant of the oil refinery is composed of oil sludge, scum and residual activated sludge, which is usually called “three sludges”. Oil sludge includes sewage tank bottom sludge and pool bottom sludge. Tank bottom sludge is a mixture of oil, water, mud,…
IEPP Multi-disc Spiral Sludge Dehydrator is a dewatering unit that offers a superior alternative to other dewatering technologies, such as the centrifuge and belt press. It offers clog-free functionality, low energy consumption, simple operation & maintenance, and is suitable for a wide range of applications. Applications The Multi-disc Spiral Sludge Dehydrator is a ‘moving disc…
In order to sell the liquid hydrocarbons that are produced by oil producing wells, they need to meet specifications that define the maximum allowable amount of water and salt, along with other impurities. Unfortunately, the liquid hydrocarbons that are produced by the wells seldom (if ever) match these requirements. So, there will always be some…
Sludge poses significant problems for wastewater treatment plants. With its pathogen content and unstable nature, sludge is a hazard to both human health and the environment. What can we do about it? The answer is to aggressively process it, reduce pathogen levels, and stabilize the biosolids. There are several traditional sludge processing methods — namely…
We summarizes some experience and skills to help you improve the processing capacity and reduce the operation cost. The on-site management and operation personnel of the sludge dewatering machine need to constantly observe and adjust in time, so as to achieve the best state and relatively stable cooperation in various changes as far as possible….
what is sludge drying?Sludge drying refers to the process of removing most of the water content from sludge through actions such as percolation or evaporation. The sludge drying methods are mainly natural evaporation and mechanical dehydration, both of which aim to further reduce the moisture content of the sludge. Why does sludge need to be…
There are usually some failures during the commissioning and operation of the screw press sludge dehydrator. It is necessary to clarify the reasons to make timely adjustments, improve the performance. Failure A: Sludge Clogging. Solution: If it is slightly clogged, try to reverse the screw shaft. If blocked seriously, screw cylinder need to be disassembly…
The screw sludge dewatering machine becomes one of main sludge processing machine in the wastewater industry. And the market is flooded with numerous OEM manufacturers, then how to evaluate the configuration of a screw sludge dewatering machine is important to get right one for your purpose. Some basic judgement standard for reference. Material As the…