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Process for treating high-COD (Chemical Oxygen Demand) and oil-content oil production wastewater

A technology for oil extraction wastewater and treatment process, applied in mining wastewater treatment, water/sewage treatment, water/sewage multi-stage treatment, etc., can solve the problems of slow sludge sedimentation, long reaction time, poor water quality, etc. The effect of sludge processing capacity, improving dewatering efficiency, and increasing processing load

Inactive Publication Date: 2022-03-08
JIANGSU YULONG ENVIRONMENTAL PROTECTION
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Problems solved by technology

[0004] However, the oil extraction wastewater treatment process is complex, the water quality after treatment is poor, and the cost of water quality treatment is high, which cannot meet market demand. During the sedimentation process, the sludge sedimentation speed is slow, and the addition of drugs is not uniform enough. longer time

Method used

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  • Process for treating high-COD (Chemical Oxygen Demand) and oil-content oil production wastewater
  • Process for treating high-COD (Chemical Oxygen Demand) and oil-content oil production wastewater
  • Process for treating high-COD (Chemical Oxygen Demand) and oil-content oil production wastewater

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Embodiment 1

[0036] Embodiment 1, see Figure 1-4 , the present invention provides a technical solution: a treatment process that can be used for high COD and oil recovery wastewater, including: sedimentation tank 1, sludge collection seat 2, sedimentation plate 3, strip column 4 and dosing mechanism 5, sludge The collection seat 2 is fixedly arranged at the bottom of the sedimentation tank 1, and communicates with the inner cavity of the sedimentation tank 1. The inner cavity of the sedimentation tank 1 is provided with several sedimentation plates 3 in turn from left to right. All of them are fixedly arranged with bar columns 4 along the left and right directions, and the dosing mechanism 5 is arranged at the top of the bar columns 4 .

[0037] As a preferred solution, further, several settling plates 3 are arranged inclined from top to bottom to the left.

[0038]As a preferred solution, further, the dosing mechanism 5 includes: a rotating shaft 51, a pulley 52, a transmission belt 53 ...

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Abstract

The invention discloses a process for treating oil production wastewater with high COD (Chemical Oxygen Demand) and oil content. A sedimentation tank; the sludge collecting seat is fixedly arranged at the bottom end of the sedimentation tank and is communicated with the inner cavity of the sedimentation tank; a plurality of sedimentation plates are sequentially arranged in an inner cavity of the sedimentation tank from left to right; the strip-shaped columns are fixedly arranged at the top ends of the front side and the rear side of the sedimentation tank in the left-right direction; and the dosing mechanism is arranged at the top end of the strip-shaped column. According to the high-COD and oil-content oil-producing wastewater treatment process, insoluble organic pollutants in wastewater are subjected to a coagulation reaction by adding a coagulant and a high-efficiency coagulant to form alumen ustum which is separated out from water and removed, so that the insoluble organic pollutants in the wastewater are greatly reduced while grease and suspended solids are removed, and the treatment effect of the wastewater is improved. The load of subsequent biochemical treatment facilities is reduced, and the operation cost is saved.

Description

technical field [0001] The invention relates to the technical field of waste water treatment, in particular to a process for treating high COD and oil recovery waste water. Background technique [0002] There are high levels of CODCr, BOD5 and oil in the oil production wastewater, and if it is discharged without treatment, it will have a serious impact on the environment: crude oil floating on the water will isolate the air, reduce the dissolved oxygen in the water, and adhere to aquatic organisms The oil deposited on the bottom of the water will produce highly toxic hydrogen sulfide after anaerobic decomposition. Heavy crude oil adheres to the sediment, which will affect the habitat and reproduction of aquatic organisms; oilfield sewage contains some toxicity Large organic matter will pollute the water body and soil; the organic matter and inorganic matter in the oil field sewage are nutrient-rich substances for bacteria in the water, resulting in the deterioration of the w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F103/10
CPCC02F9/00C02F1/5281C02F2001/007C02F3/1268C02F3/1205C02F2103/10
Inventor 黄翀黄东辉刘小欢蒋永丰凌锐黄宇申晨希
Owner JIANGSU YULONG ENVIRONMENTAL PROTECTION
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