Many customers are concerned about the effect of sludge synergist on sludge dewatering? The answer is yes, today Works Chemical Xiaobian to explain to you! Works Chemical's own development and production of sludge enhancer can effectively solve your sludge water content problem. Sludge enhancer is a chemical agent that can change the surface structure of the sludge, reduce the surface load of the sludge solid, reduce the specific surface area of the sludge surface, and destroy the bacterial structure.
To solve the problem of high water content of industrial sludge in paper mills, you can start from many aspects, and the following are some main methods and strategies:
1. Pretreatment of sludge before treatment
Adjusting sludge properties: by adding chemical agents (such as coagulants, coagulants) or physical methods (such as stirring, heating) to adjust the properties of the sludge, so that it is easier to dehydrate.
Reduce the sludge concentration: if the sludge concentration is too high, it can be properly diluted to reduce the burden of subsequent treatment equipment and improve the efficiency of dehydration.
Second, sludge dewatering technology
Mechanical dehydration
Filter press: such as plate and frame filter press, belt filter press, diaphragm filter press, etc., these devices squeeze out the water in the sludge through mechanical pressure to reduce the moisture content. Among them, the high-pressure sludge pressing and drying machine will treat the sludge to less than 50% moisture content, which is one of the most effective equipment.
Centrifuge: The use of centrifugal force to separate the water in the sludge from the solid, suitable for the treatment of high solid content of the sludge.
Natural drying
The sludge is placed in the sludge drying field to reduce the moisture content through natural evaporation and osmosis. However, this method has higher requirements for the natural environment and a long treatment cycle, which may bring certain environmental pollution.
granulation
The sludge is pelleted through the granulator, and then dehydrated to form a large dense clay ball and reduce the water content. This method is suitable for flocculating and settling paper sludge.
3. Biological treatment
Aerobic treatment: The use of aerobic bacteria to decompose organic matter in the sludge, while reducing the moisture content of the sludge and organic matter content. This method can stabilize the sludge and reduce its harm to the environment.
Anaerobic digestion: Under anaerobic conditions, organic matter in the sludge is decomposed into more stable substances through the action of microorganisms, while biogas (such as methane) are produced for energy use. Anaerobic digestion can also reduce the moisture content of the sludge.
4. Other methods
Heat treatment: The sludge is treated at high temperature to evaporate the water in it and reduce the organic content. This method can effectively reduce the volume and weight of the sludge, but it requires a lot of energy consumption.
Chemical stability: The use of chemical agents to modify the sludge to make its nature stable and reduce the harm to the environment. Commonly used chemicals are lime, acid, alkali and so on. However, it is necessary to control the dosage and cost of the drug reasonably.
5. Comprehensive treatment strategy
Combined process: According to the characteristics of sludge and treatment requirements, a variety of treatment methods are combined to achieve better treatment results. For example, the moisture content of the sludge can be reduced by mechanical dehydration before biological treatment or chemical stabilization.
Resource utilization: The treated sludge is converted into valuable resources, such as fertilizer, building materials, etc. This can not only reduce the disposal cost of sludge, but also realize the recycling of resources.
Strengthen supervision and support: The government and all sectors of society should strengthen the supervision and support of paper mill sludge treatment, and promote the green development of the paper industry. Through the formulation of relevant policies and standards, enterprises are encouraged to adopt advanced sludge treatment technology and management models.
In summary, to solve the problem of high water content of industrial sludge in paper mills, a variety of factors and methods need to be comprehensively considered. Through scientific and reasonable selection and application of sludge treatment technology and management mode, sludge can be reduced, stabilized, harmless and resource utilization.