A kind of microbial treatment method of waste drilling fluid

Abstract

The present invention relates to the technical field of harmless treatment of waste drilling fluid, in particular to a microbial treatment method for waste drilling fluid. Organic pollutants and petroleum hydrocarbons are oxidized and decomposed to degrade organic polymers into environmentally acceptable low molecules or gases to achieve the purpose of eliminating pollution. A microbial treatment method for waste drilling fluid comprises the steps of cultivating bacterial fluid, mixing and spraying the bacterial fluid into the drilling fluid, mixing and spraying the bacterial fluid into drilling cuttings, backfilling and watering the covering soil and sowing seeds.

Description

A kind of microbial treatment method of waste drilling fluid technical field The present invention relates to waste drilling fluid harmless treatment technical field, relate in particular to a kind of waste drilling fluid microbial treatment method. Background technique Waste drilling fluid is a kind of main pollutant that produces in the oilfield development process, and the composition is complex, usually contains viscous Soil, weighting materials, various chemical treatment agents, water, oil and drill cuttings, etc., are complex multiphase stable colloidal suspension systems. When some chemical treatment agents have different degrees of toxicity. If it is discharged directly without treatment, it will affect the soil, atmosphere, underground Water, etc. causes pollution and harms the environment, and realizing its harmless treatment is of great significance to the protection of the ecological environment and the health of animals and plants. The most commonly ...

AI Technical Summary

Problems solved by technology

[0003] At present, the most commonly used waste drilling fluid treatment technology is solidification method. This technology usually adds a curing agent to convert the waste drilling fluid into a solid similar to soil or with high cementation strength, which can be buried in situ or used as building materials, etc., although in a short time However, most of the pollutants have not been eliminated, but are only fixed in the solidified block, and the solidified block is buried in the ground. After long-term effects of physics, chemistry, and biology, the pollutants seep out, causing re-contamination of soil and groundwater

At the same time, solidification treatment needs to add a large amount of destabilizing agent, coagulant aid, curing agent, etc., which not only increases the amount of waste discharge, but also consumes a large amount of materials, energy and labor costs, which will inevitably cause secondary pollution. A non-energy efficient disposal method

Furthermore, the solidified land cannot be cultivated, wasting precious land resources, and will continue to pollute the surrounding land and water with the seepage of pollutants

Therefore, the curing method has the disadvantages of incomplete treatment, large investment, and high cost.