Concentrating and drying system and method for sludge treatment

Abstract

The invention discloses a concentrating and drying system and a concentrating and drying method for sludge treatment. The concentrating and drying system comprises a water inlet pipe, a flocculant dissolving tank, a sludge tank, a mixing box, a dehydrating machine, a drying machine and a receiving barrel, wherein the water inlet pipe is connected with the flocculant dissolving tank; a metering pump is arranged between the flocculant dissolving tank and the mixing box; a sludge pump is arranged between the sludge tank and the mixing box; and a filter pipe is arranged between the mixing box and the dehydrating machine. The concentrating and drying method comprises the following steps: (a) drug pre-preparation, (b) mixing reaction; (c) concentrating and dehydrating; (d) drying and preheating; and (e) drying and dehydrating. The drying system is high in work efficiency, time-saving and labor-saving, a lot of sludge can be continuously dried, the drying effect is good, the dying method is simple in operation, reasonable and effective, the drying quality is easy to control, the dried sludge can be used as an organic fertilizer, the utilization rate of the sludge is increased and the waste is changed into treasure.

Description

technical field [0001] The invention belongs to the field of sludge treatment, in particular to a concentration and drying system and method for sludge treatment. Background technique [0002] Sludge is one of the main by-products after sewage treatment, accounting for about 0.3%-0.5% (volume) or 1%-2% (quality) of the sewage treatment volume. With the development of industrial and agricultural production and the continuous construction of sewage treatment plants around , my country's industrial and domestic sewage treatment volume is increasing rapidly, and more sludge is bound to be produced. The composition of sludge is very complex. In addition to a large amount of water, it also contains a large amount of organic matter, refractory organic matter, various trace elements, pathogenic microorganisms, parasite eggs and heavy metals. If it is not treated and discharged randomly, it will cause secondary pollution to the environment, and the difficulty of re-treatment of this ...

AI Technical Summary

Problems solved by technology

Sludge incineration is a better treatment method, but the three wastes produced during the incineration process still continue to cause secondary pollution. sources of pollution, will cause new pollution to the air and the environment

Settling tanks are u

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