Low-temperature sludge drying treatment system and technology

Abstract

The invention discloses a low-temperature sludge drying treatment system. The low-temperature sludge drying treatment system comprises a dosage and flocculation unit, a condensation and dewatering unit, a shearing and granulation unit, a low-temperature drying unit and a discharging and packaging unit which are sequentially connected, wherein the dosage and flocculation unit comprises a flocculation tank and a stirring device arranged in the flocculation tank, the condensation and dewatering unit comprises a sludge dewatering machine, the shearing and granulation unit comprises a shearing and granulator, the low-temperature drying unit consists of a low-temperature sludge drying machine, a fan and a heat pump system. The technology comprises the treatment steps of 1) feeding a flocculating agent into sludge so as to promote the dewatering property; 2) dewatering the flocculated sludge; 3) performing shearing and granulation treatment on the dewatered sludge; 4) performing low-temperature drying treatment on the granulated sludge at 50-100DEG C; 5) performing vacuum bagged packaging on the dried sludge. The treatment system is less in occupied area, high in equalization degree, low in energy consumption, and incapable of producing secondary pollution in the treatment process.

Description

technical field [0001] The invention relates to a sludge treatment system and a process, in particular to a system and a process for performing low-temperature drying treatment on sludge generated in a waste water treatment process, and belongs to the field of environmental protection. Background technique [0002] Sludge is the end product of the sewage treatment process and an important source of pollution. If it is not treated, it will cause serious pollution to the atmosphere, water, and soil, and it will also accelerate the spread of certain human diseases; with the further development of my country's economy With the development, the amount of sludge produced by sewage treatment will increase, and the threat of sludge to environmental pollution will also increase; the country's requirements and standards for sludge treatment will become higher and higher. Among the numerous sludge treatment technologies, the drying and incineration process is an important technology. Th...

AI Technical Summary

Problems solved by technology

Among the numerous sludge treatment technologies, the drying and incineration process is an important technology. The basic process is to concentrate, dry, and finally incinerate the sludge, and recover the heat generated by the incineration; the drying process It is the key step of the process and the main energy consumption. At present, the process has problems such as large energy consumption, high operating cost, and dust generated in the drying and subsequent transmission processes that easily cause environmental pollution. It is difficult to adapt to the new situation and cannot Meet increasing sludge volumes and increasingly stringent environmental requirements

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