Sludge Drying Solution
Sludge is the sediment produced by the treatment of wastewater by physical, chemical and biological methods. According to their sources, they can be divided into electroplating sludge, printing and dyeing sludge, tannery sludge, paper mill sludge, medical sludge, water plant sludge, domestic sludge and petrochemical sludge. Because of its poor fluidity, high stickiness, easy caking, and water not easy to evaporate, the drying time is more difficult, and the technical requirement of drying is higher. (slime, gypsum and so on wet sticky materials are also dried by the technology of this drying system).
With the increasing awareness of environmental protection, sludge drying technology is also developing rapidly, and in energy saving, safety, reliability, sustainability and other aspects of continuous innovation and improvement, our sludge drying system is to dry the sludge after dewatering from 80 +/- 10% to 20 +/- 10%, the advantages of this system are as follows:
1, the weight of sludge after drying can be reduced to 1/4 before drying, greatly reducing the environmental and economic pressure of enterprises.
2, the air inlet temperature of the mainframe of the dryer is 600-800 degrees, and the sludge can be sterilized and deodorizing at the same time, so as to provide a reliable guarantee for the resource utilization of the dried products.
3, after drying products can be used as feed, fertilizer, fuel, building materials, extraction of heavy metals and other raw materials, turning waste into treasure.
||A: increase filter press equipment, reducing moisture content by mechanical means first.
B: drying by air, natural volatilization
||Install the mixing and breaking equipment under the storage bin, and stir the mixture thoroughly before feeding.
||Low fluidity, blocking for feeding chute
||Our company specially designed unpowered screw feeding large head to solve the difficult problem of feeding, and avoided the scene of blocking chute and windshield by cutting chute.
||Very sticky to dryer wall, hard to clean
||The downstream heating is adopted to increase the intake temperature and increase the cleaning function of the lifting plate.
||Agglomerating, not easy to evaporate
||The chain is increased inside the dryer, and two lifting plates are added in the rear section to avoid the occurrence of wind tunnel phenomenon and improve the thermal efficiency.
||Possible bad smell
||The inlet temperature is increased, the sealing measures are strictly sealed, and the deodorizing device is added to the tail gas precipitator.
||A: adding neutralizing raw materials
B: stainless steel or stainless steel liner
||The feed cover is easy to burn out
||A. Add superheated duct between hot air stove and dryer.
B. Use heat resistant material for hot air contact parts