Sludge carbonization device and comprehensive utilization method

Abstract

The invention discloses a sludge carbonization device and a comprehensive utilization method. The method comprises the following steps: (A) collecting concentrated sludge of a sewage treatment plant,putting the concentrated sludge into a sewage conditioning system and adding an organic additive into the sludge; (B) dewatering the conditioned sludge in a sludge sheet frame dewatering system; (C) crushing the dewatered sludge in a sludge crushing system; (D) drying the crushed sewage in a sludge drying system; (E) carbonizing the dried sludge in a sludge carbonization system and collected solidcarbide obtained by carbonization into a carbide collection system; (F) preparing the organic additive in an organic additive preparation system, wherein the prepared organic additive is used in step(A); a combustor is used for supplying required heat sources for the sludge drying system in step (D) and the sludge carbonization system in step (E). Through adoption of the systems, the reduction,stabilization, harmlessness and recycling of the sludge can be achieved, and the practicability is good.

Description

technical field [0001] The invention relates to a sludge carbonization disposal and comprehensive utilization method, which is suitable for the advanced treatment of the sludge, so as to realize the reduction, stabilization, harmlessness and resource utilization of the sludge. Background technique [0002] In recent years, my country's sewage treatment industry has achieved great development, which has greatly improved my country's water environment. However, the rapid increase of water treatment plants and sewage treatment volume has led to a sharp increase in the total amount of sewage sludge produced by sewage treatment plants in the process of sewage treatment, which has become a new threat source of environmental pollution in my country. [0003] According to statistics, the main methods of sewage sludge disposal in urban sewage treatment plants in my country are agricultural utilization, landfill, and other disposal (including incineration), and the investment in sludg...

AI Technical Summary

Problems solved by technology

However, the use of sludge in agriculture will increase the concentration of heavy metals in the soil and indirectly enter the atmosphere and water environment, thereby threatening human health; sludge landfill will occupy a large amount of land resources and cause potential environmental hazards; and sludge incineration treatment Almost all kinds of harmful substances can be removed, but the incineration of sludge requires a large amount of heat source, and most of the heat has not been recycled, the cost is high, the investment is also large, and the incineration process is accompanied by serious air pollution

Images