Waste drilling mud treatment process

Abstract

The invention discloses a waste drilling mud treatment process. The process comprises the following steps: adding a proper amount of a first flocculant into mud so as to primarily destabilize the mud; adding a proper amount of a second flocculant into the primarily destabilized mud for destabilizing continuously so as to complete the mud destabilization; performing solid-liquid separation treatment on the destabilized mud so as to obtain sediments and supernatant; clearing away the sediments and adding a proper amount of a third flocculant into the supernatant so as to remove residual flocculating constituents; adding a proper amount of a first pH regulator into the supernatant, in which the residual flocculating constituents are removed; discharging the supernatant. Compared with the prior art, the waste drilling mud treatment process has the advantages that through the combined flocculation of the first flocculant and the second flocculant, the flocculation effect is better and the water content of the sediments is lower.

Description

technical field [0001] The invention relates to the technical field of environmental engineering, and more specifically, relates to a drilling waste mud treatment process. Background technique [0002] During the construction of railways, highways and bridges, the construction method of bored pile foundation is generally adopted. During the drilling construction process, it is necessary to use mud to protect the hole wall, carry cuttings out of the hole, and cool the drill bit. At the same time, the mud can also form a mud skin on the side of the well to play the role of temporary wall protection. When drilling and sinking the well wall, the equipment and the well wall need to occupy part of the space, thereby discharging a large amount of excess mud. These discharged mud cannot be used and become waste mud. During the drilling process, a large number of additives are added to the mud, and the additives are mainly organic polymer materials, which makes the composition of th...

AI Technical Summary

Problems solved by technology

However, the traditional chemical flocculation treatment method only uses a single type of flocculant, which can only interact with some substances in the waste mud, resulting in poor flocculation effect. Not only the moisture content of the sediment is high, but also the clear liquid will A large number of flocs remain, unable to meet the discharge standard

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