Material Overview

The technical principles and application advantages of horizontal screw belt mixer in cattle manure treatment and resource utilization. This device integrates solid-liquid separation, aerobic fermentation, and mixed fertilizer production functions, and achieves harmless treatment and efficient conversion of cow manure through a spiral structure and intelligent control system. Emphasize its core value in reducing the moisture content of manure, accelerating the maturation cycle, and improving the quality of organic fertilizers, providing advanced technological solutions for the treatment of livestock waste.

With the rapid development of large-scale aquaculture, cow manure pollution has become a difficult point in environmental protection management. The traditional composting method has problems such as long cycle (30-45 days), low efficiency, and high risk of secondary pollution. The horizontal spiral belt mixer, through integrated design and dynamic aerobic fermentation technology, shortens the cow manure treatment cycle to 7-8 days and increases the organic matter retention rate by more than 20%. This device is rapidly becoming the core equipment for the resource utilization of livestock manure.

Equipment structure

-U-shaped container structure: made of 316L stainless steel material, with a volume coverage of 0.3-40m ³, mirror polished (Ra ≤ 0.8 μ m) to reduce material adhesion.

-Double layer screw belt system:

-The outer spiral belt pushes the cow manure from both sides towards the center, forming a squeezing dehydration zone;

-The inner spiral belt diffuses the material from the center to both sides, promoting oxygen exchange.

-Modular functional unit: optional heating jacket (thermal oil/steam), vacuum dehydration system or CIP cleaning device to meet the needs of different process stages.

working principle

1. Solid liquid separation stage: Fresh cow manure is fed through a feeding tube, and the screw press mechanism achieves solid-liquid separation under centrifugal force, reducing the moisture content of the filter residue to 60-65%.

2. Mixed fermentation stage:

-Add microbial agents and auxiliary materials such as straw, and use the screw belt to achieve material flipping at 10-50 rpm in both forward and reverse directions;

-The jacket heating maintains the optimal fermentation temperature of 55-65 ℃ to accelerate the humification process.

3. Discharge and post-processing: Pneumatic large opening door for rapid discharge (residual rate<0.1%), granular materials directly enter the granulation process.

>Technological breakthrough point: The vortex effect generated by the movement of the snail belt increases the oxygen contact area by 300% and microbial activity by 40%, which is the key mechanism for shortening the fermentation cycle.

Technological advantages in cow manure treatment

Comparison of Efficiency Improvement

Value added of resource-based products

-Organic fertilizer quality: total nitrogen, phosphorus, and potassium nutrients ≥ 5%, organic matter content ≥ 45%, in compliance with NY 525-2021 standards;

-Biogas residue reduction: The solid matter entering the biogas digester is reduced by 70% to avoid blockage of the digester body;

-Additional benefits: The separated liquid can be used as liquid fertilizer, and the profit margin of producing commercial organic fertilizer from filter residue exceeds 30%.