Combined drilling wastewater and tail gas treatment device and method

Abstract

The invention discloses a combined drilling wastewater and tail gas treatment device which comprises a settling pond, an electrochemical wastewater treatment device, a clean water basin, a clean water pump, a tail gas treatment water inlet valve, a tail gas treatment control device, a tail gas treatment cylinder and a drainage valve which are sequentially connected through a water pipe, wherein a water outlet of the drainage valve is connected with a water inlet of the settling pond. The invention also discloses a combined drilling wastewater and tail gas treatment method which comprises the following steps: treating the wastewater to obtain clean water through the electrochemical wastewater treatment device; introducing the clean water into a water pipe of the tail gas treatment control device; arranging the tail gas treatment control device in a tail gas treatment mode or a water solution evaporation mode, introducing the clean water into the tail gas treatment cylinder, ejecting the clean water for purifying the tail gas and reducing the temperature, introducing the wastewater into the electrochemical wastewater treatment device for recirculation or evaporating the clean water. According to the device and method, the drilling wastewater amount is obviously reduced, and dust emission of well site tail gas is eliminated. Moreover, emission of the drilling wastewater is completely eliminated, and the device has obvious significances of energy conservation and emission reduction.

Description

technical field [0001] The invention relates to a treatment device and method for drilling sewage and tail gas, in particular to a combined treatment device and method for drilling sewage and tail gas. Background technique [0002] Existing drilling sewage can be treated in depth and continuously through chemical treatment and electrochemical treatment, but no matter what the treatment result is, it cannot be discharged to the well site, and the wastewater must be transported to a designated place for discharge. In order to meet the requirements of use, the capacity of the sedimentation tank at the well site must be increased, which increases the amount of land acquisition at the well site, increases the cost, and increases the area of ​​environmental pollution. Existing well site power diesel units emit a lot of dust, and the ordinary exhaust gas treatment effect is poor, resulting in increased back pressure of the diesel engine and increased fuel consumption. Pollution pr...

AI Technical Summary

Problems solved by technology

[0002] Existing drilling sewage can be treated in depth and continuously through chemical treatment and electrochemical treatment, but no matter what the treatment result is, it cannot be discharged to the well site, and the wastewater must be transported to a designated place for discharge. In order to meet the requirements of use, the capacity of the sedimentation tank at the well site must be increased, which increases the amount of land acquisition at the well site, increases the cost, and increases the area of ​​environmental pollution

Existing well site power diesel units emit a lot of dust, and the ordinary exhaust gas treatment effect is poor, resulting in increased back pressure of the diesel engine and increased fuel consumption. Pollution problem, so the well site usually does not use tail gas treatment

[0003] To sum up, the existing drilling sewage and tail gas do not have any devices and methods that can treat simultaneously, which greatly restricts the development process of low emission and low pollution in the drilling industry, and does not meet the general trend requirements of energy saving and emission reduction

Images