Sludge treatment biological organic complex fertilizer continuous production complete equipment

Abstract

The invention relates to a continuous production complete-sets of equipment for treating biological organic complex fertilizer by a sludge. The operation process is as follows: carrying out centrifugal dewatering to the untreated sludge for the first time, adding water into the sludge in a stirring tank and stirring the mixture, then carrying out centrifugal dewatering to the slurry in another centrifuge pumped by a slurry pump, carrying out the similar centrifugal dewatering for four times, removing heavy metal from the slurry after the final dewatering in a heavy metal separator, drying the product from the heavy metal separator in an internal heating type energy saving screw dryer, transporting the dry sludge into a feeder after weighing the dry sludge, adding auxiliary materials by the feeder, transporting the dry sludge mixed with auxiliary materials into a gravity free mixer to make the auxiliary materials and the dry sludge to be the best mixing state, transporting the uniformly mixed materials into a spiral extruding type granulator and preparing granule materials, cooling and sterilizing the finished product granule in a tunnel-type cooling sterilizer, finally finishing package in a packing machine. The running cost of the invention is low, the water content of the treated sludge is low and the quality of the organic complex fertilizer is improved.

Description

technical field [0001] The invention relates to a production equipment of organic compound fertilizer, in particular to a complete set of equipment for continuous production of sludge treatment bio-organic compound fertilizer designed for sludge materials. Background technique [0002] At present, a large amount of sludge produced in our country is basically disposed of in landfill, only a small amount is used for coal mixing or building materials after treatment, and some of them are used as raw materials for fertilizer production. With the increasingly severe environmental protection situation, the shortcomings of the sludge landfill treatment process have been exposed: [0003] 1. The landfill is generally a layer of garbage and a layer of soil, and then rolled to ensure better space utilization. The high moisture content and high viscosity of the sludge often make the rolling machinery slip and even sink deeply, which brings difficulties to the landfill operation. [0...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the defect of high operating cost of the current sludge dehydration and drying process, and to invent an internal heating energy-saving screw dryer to dry the sludge first, and then further directly make the dried sludge into a compound Fertilizer sludge treatment bio-organic compound fertilizer continuous production equipment

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