Petroleum drilling waste water processing system and method for processing petroleum drilling waste water

Abstract

The invention discloses a petroleum drilling waste water processing system and a method for processing petroleum drilling waste water. The petroleum drilling waste water processing system comprises a storage tank, a filter, a charge pump, an evaporation device and a concentrate circulating pump, the storage tank is used for precipitating the drilling waste water, the filter is communicated to an inner chamber of the storage tank through a pipeline and is used for filtering granular impurity in the drilling waste water, the charge pump is connected to the filter through the pipeline and is used for extracting the drilling waste water in the storage tank, the evaporation device is connected to the charge pump through the pipeline and is used for performing evaporative concentration to the drilling waste water, the concentrate circulating pump is connected to the evaporation device through the pipeline and is used for extracting a concentrate in the evaporation device, and the concentrate circulating pump is connected to the storage tank through the pipeline and is used for injecting the concentrate in the storage tank for storage. According to the invention, the system is used for processing the petroleum drilling waste water, can realize evaporation of the drilling waste water under condition that electric energy consumption is little, and can avoid atmosphere pollution and underground water pollution due to direct evaporation of sewage in current sunning pools.

Description

technical field [0001] The invention relates to the technical field of drilling wastewater treatment, in particular to a petroleum drilling wastewater treatment system and a method for treating petroleum drilling wastewater. Background technique [0002] Drilling wastewater is one of the main pollutants in the petroleum industry. It is mainly a multiphase stable suspension composed of clay, drilling cuttings, weighting materials, chemical additives, inorganic salts, and oil. The pH value is high, and the direct discharge will pollute the environment. Serious, and the complex and changeable components make it difficult to deal with biological and chemical methods. The method of evaporation to treat drilling wastewater has been initially applied in oil drilling sites, and the treatment effect is good. As a purely physical method, no additional chemicals are added, and the comprehensive environmental protection benefits are good. [0003] Although the physical evaporation proc...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art, to provide a petroleum drilling wastewater treatment system and its method for treating petroleum drilling wastewater, and to use this system to treat petroleum drilling wastewater, which can realize the evaporation of drilling wastewater while consuming a small amount of electric energy , and avoid the air pollution and groundwater pollution caused by the direct evaporation of the sewage in the drying pool

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