Instructions for drying and incineration of printing and dyeing sludge

      Heat drying is to first dehydrate the sludge with belt sludge dehydrator and use heat energy to dry the sludge.The sludge after drying is granular or powder, the volume is only 1/5~1/4 of the original, and by the moisture content below 10%, the microbial activity is inhibited to avoid the product moldy and smelly, conducive to storage and transportation.The high temperature sterilization in the heat drying process is very thorough, and the product can fully meet the hygiene indicators and improve the sludge performance. The product can be used as alternative energy.But it needs to be noted that the hot drying of sludge only reduces the moisture in the sludge, and the organic content in the sludge does not reduce, so it is not a stabilization treatment.Drying treatment technology consumes too much energy and costs a lot when applied to printing and dyeing sludge treatment.If the biogas generated from anaerobic digestion in the stabilization process can be fully utilized, consideration can be given to using the biogas generated during digestion to assist in sludge desiccation.To achieve the purpose of treating waste with waste.

The advantage of sludge incineration is that the reduction can be achieved quickly and to a large extent.It not only creates conditions to solve the way out of the sludge, but also fully consumes the energy in the sludge, and does not need to consider the pathogenic bacteria inactivation treatment.The heat energy of sludge incineration can be recycled, toxic pollutants are oxidized, and the activity of heavy metals in the ash is greatly reduced.Disadvantages are high cost and possible pollution from exhaust gas, noise, vibration, heat and radiation.With the use of sulfur dioxide as air pollution control, the incineration of sludge will be put forward more stringent requirements.

The printing and dyeing sludge contains a lot of poisonous and harmful substances, toxic or harmful gases generated in combustion process is much more than ordinary sludge, the conditions in the combustion process is not easy to control, difficult to deal with the pollutants, and calorific value is not high, need to spend a lot of auxiliary fuel, is generally not suitable for printing and dyeing sludge incineration alone, conditional can be mixed with local municipal solid waste incinerators incineration printing and dyeing sludge.

      Doyen specializes in providing belt press equipment for the Southeast Asian market. Welcome to visit our workshop and formulate a more scientific  plan based on the actual situation of your company. Welcome to visit joyce@doyenchina.com or visit https://www.doyenchina.com.