Silt processing method

Abstract

This invention relates to a kind of silt processing method. The method includes following steps: silt dehydration; cutting and granulation; then heat for drying. Dry temperature controlled at 100 to 300 deg, 200 deg is best. This invention solves the handling problem of municipal sewage plant, lake, watercourse and marshy silt. The silt after treatment could be directly used as vegetable manure.

Description

technical field [0001] The invention relates to a sludge treatment method. Background technique [0002] At present, only lakes and rivers have silt in our country, and the annual collection amount can reach at least 70 million tons. Adding the silt from urban sewers, the annual total collection amount can reach more than 100 million tons. Collecting silt is conducive to dredging rivers, preventing water eutrophication and purifying the urban environment. [0003] For the treatment of sludge and sludge, there are mainly three treatment methods in the prior art: the one is to dump directly into the sea. Doing so pollutes marine resources and has been expressly prohibited by the international community; the second is to use burning methods. This method consumes a lot of energy and costs high, but it occupies a small area during treatment. At present, this method is used in the treatment of sludge in Macao, my country; the third is landfill. This can pollute groundwater sour...

AI Technical Summary

Problems solved by technology

Using this method consumes a lot of energy and costs high, but it occupies a small area during treatment. At present, this method is used in the treatment of sludge in Macao, my country; the third is landfill