Fundamentals of Industrial Sludge: Trends and Challenges

Industrial sludge is the refuse produced by treating industrial effluent, which generates hundreds of millions of tons of sludge annually globally. This chapter discusses the fundamentals, trends, and challenges of industrial sludge. First, industrial sludge’s definition, characteristics, and significance will be discussed, emphasising its volume reduction and organic waste stabilisation. Second, the numerous varieties of industrial sludge will be presented based on their origins and composition. Third, various technologies for treating industrial sludge will be investigated, from conventional treatment and disposal methods to emerging and innovative technologies. In this chapter, we will also discuss several obstacles that can be surmounted by implementing various solutions while managing industrial sludge. Lastly, the discussion will be based on implementing futuristic trends and technologies to promote a balance between the economy and the environment when sustainable development is a primary objective.