A refined treatment method for impurities in construction spoil

Abstract

The invention relates to a fine processing method for impurities in building waste soil. The fine processing method comprises the following steps of forming mixed slurry: processing the building wastesoil by adopting a sludge dreg treatment device, and forming mixed slurry comprising substances such as gravel, soil, grass wood chips and water; performing stirring and processing, wherein the mixedslurry is stirred and processed in a stirring tank, so that the gravel, the soil and the grass wood chips are separated from each other; performing depositing and processing, wherein the mixed slurrystands in a transition pool and is subjected to settling and layering, and the weeding wood chips are preliminarily removed; performing inflating treatment, wherein inflation treatment is carried outon the mixed slurry with the weeding wood chips preliminarily removed in an inflation tank, the and weeding wood chips are further removed; and performing recycling, wherein the mixed slurry obtainedafter two-stage removal of the weeding wood chips are separated to obtain mud slurry and gravel, and the collected grass wood chips are recovered and utilized. By means of the fine processing method,the building waste soil can be used for producing high-quality building raw materials, and the grass wood chips can be effectively recovered.

Description

Technical field[0001]The invention relates to a refined treatment process of impurities in construction spoil, and in particular to a refined treatment method of organic matter such as grass and wood chips in construction spoil.Background technique[0002]Since the 20th century, my country’s urbanization process has been unprecedentedly rapid. According to national statistics, my country’s urbanization rate has exceeded 60%, and the driving force for urbanization is still very strong. With the obvious increase in surface buildings that can be intuitively felt, the scale of utilization of underground space in my country has also increased dramatically, providing invisible space for urban transportation, commercial space, pipeline laying and many other urban development projects. However, with the increase in buildings, more and more construction waste has become a challenge that must be faced. In this regard, continuing to promote the reduction of the source of construction waste and i...

AI Technical Summary

Problems solved by technology

However, at present, there is no special treatment for organic impurities such as grass and wood chips in construction spoils. Usually, other treatment methods are used to treat grass and wood chips by the way, or simply collect floating grass and wood chips by sedimentation, which is not only difficult to finely treat grass and wood chips. Removal to affect product quality, and grass and wood chips may affect other processing steps, such as clogging separation devices, etc.