Innocuous treatment and utilization method for sludge

Abstract

This invention discloses a new method for innocuity of mud including the following steps: 1, putting dehydrated mud into a mixing basin to adjust the pH value to 8-9 and mixing them and inputting them to an anaerobic tower, 2, the mud mixture is fermented and separated automatically in the tower, 3, marsh gas is used in burning and generation, 4, the solution is used in fertilizing farms and the part can't be used passes through a SBR biochemical process device and enters into a slant pipe to be deposited and separated in solid and liquid, mud flows back and the water is discharged if meets the standard, 5, the slags are mixed with the mud discharged by the SBR process device and enter into a ferment basin for the second fermentation, 6, material of the fermentation basin is input into a fertilizing process to be dried, cooled, crushed, screened, packaged and get agricultural high efficient organic fertilizer.

Description

technical field

[0001] The invention relates to an environmental protection technology, in particular to a new method for harmless treatment and utilization of urban domestic sewage treatment sludge, livestock and poultry slaughterhouse sludge and part of industrial sewage treatment sludge. Background technique

[0002] With the rapid development of my country's economy, the problem of sewage and sludge is becoming more and more prominent. If it is not treated or treated properly, the atmosphere, groundwater and soil will be seriously polluted, the land will be occupied by a large amount of garbage, and the natural landscape will be severely damaged.

[0003] Sewage treatment will produce a large amount of sediment, including comprehensive solid substances such as mud, sand, fibers, animal and plant residues, flocs, colloids, metal elements, germs, insect eggs, microorganisms, and weed seeds in sewage. Stable, perishable, spoilage, mildew.

[0004] At ...

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