Unlock instant, AI-driven research and patent intelligence for your innovation.

Treating technology and treating system for oil sand oil exploitation sewage

A technology for exploiting sewage and processing technology, which is applied in the directions of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., and can solve the problem that ground facilities cannot operate normally, affecting the safe production of oil sands and oil, formation Blockage hazards and other issues

Inactive Publication Date: 2013-10-23
庆华集团新疆和丰能源化工有限公司 +2
View PDF4 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If oil sand oil mining wastewater is reinjected without proper treatment, it will not only prevent the normal operation of ground facilities, but also cause harm due to formation blockage, and also cause environmental pollution, affecting the safe production of oil sand oil

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Treating technology and treating system for oil sand oil exploitation sewage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The composition of oil sand oil production wastewater with weak alkalinity is shown in Table 1, and Table 1 is the composition of oil sand oil production wastewater. Oil sand oil mining waste water first enters homogeneous tank 1, then add 50-500ppm hydrochloric acid to adjust the pH of wastewater to 6.5-7.5, add 20-100ppm quaternary ammonium salt demulsifier to convert the emulsified oil into suspension oil, the working temperature is 60°C. The homogenized waste water is hydraulically retained in the air flotation degreasing device 2 for 40 minutes, and the working temperature is 40°C. The effluent after air flotation and oil removal treatment enters the flocculation air flotation device 3, and 30-80mg / L polyaluminum chloride-based inorganic polymer flocculant and 3-20mg / L organic polymer flocculant are added respectively, and the hydraulic retention time is 10 minutes .

[0040] The flocculated gas floats out of the water and enters the centrifuge 4 for centrifugati...

Embodiment 2

[0044] The acidified wastewater with strong acidity first enters the homogeneous tank 1, adding 200-1000ppm of common alkali to adjust the pH of the wastewater to 6.5-7.5, adding 20-100ppm of quaternary ammonium salt demulsifier to convert the emulsified oil into suspended oil, and the working temperature is 30°C. The homogenized waste water is hydraulically retained in the air flotation degreasing device 2 for 50 minutes, and the working temperature is 30°C. The air flotation degreasing water enters the flocculation air flotation device 3, and adds 30-80 mg / L polyferric silicate inorganic polymer flocculant and 3-20 mg / L organic polymer flocculant respectively, and the hydraulic retention time is 10 minutes.

[0045] The flocculation gas flotation effluent enters the decanter centrifuge 4 for centrifugation, and the solid waste generated by centrifugation is collected and recycled for making CWS additives, and the treated effluent is used for oil reservoir reinjection water. ...

Embodiment 3

[0047] The weakly alkaline waste liquid first enters the homogeneous tank 1, adding 50-500ppm of common acid to adjust the pH of the wastewater to 6.5-7.5, adding 20-100ppm of quaternary ammonium salt demulsifier to convert the emulsified oil into suspended oil, and work The temperature is 10°C. The homogenized waste water is hydraulically retained in the air flotation degreasing device 2 for 50 minutes, and the working temperature is 20°C. The air flotation degreasing water enters the flocculation air flotation device 3, and adds 30-80 mg / L polyferric silicate inorganic polymer flocculant and 3-20 mg / L organic polymer flocculant respectively, and the hydraulic retention time is 5 minutes. The flocculation gas flotation effluent enters centrifuge 4 for centrifugation, and the solid waste generated by centrifugation is collected and recycled to make CWS additives, and the effluent after centrifugation is used as oil layer reinjection water. The oil content of oil layer reinjec...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a treating technology for oil sand oil exploitation sewage. The treating technology comprises the following steps: (a) oil sand oil exploitation sewage is subjected to homogenization in a homogeneity tank, the sewage after homogenization is then subjected to air floatation and oil removal in an air floatation and oil removal device, the removal rate of suspension oil is 85%-95%, and the removal rate of emulsified oil is 5 wt%-10 wt%; (b) the sewage obtained from the step (a) is subjected to flocculation and air floatation in a flocculation and air floatation device, and flocculates and flocculation and air floatation sewage are separated; (c) the flocculation and air floatation sewage is subjected to centrifugal separation to obtain oil sand layer reinjection water. The invention further provides a treating system for oil sand oil exploitation sewage. The treating system treats the oil sand oil exploitation sewage to obtain oil sand layer reinjection water which meets water quality requirements.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a treatment process and a treatment system for oil sand oil exploitation sewage. Background technique [0002] China is a water-poor country, with a total water shortage of 1.2 billion tons per year, and industrial water accounts for about 80% of urban water supply. With the rapid development of our country's economy, the increase of population, and the increasing water pollution, the shortage of water resources has seriously restricted the development of industry and agriculture. Therefore, sewage treatment is currently used as the first choice to solve the water shortage problem. [0003] Oil sand is a kind of sedimentary sand rich in natural asphalt. Its essence is a mixture of asphalt, sand, rich ore clay and water. Among them, the content of asphalt is 10wt% ~ 12wt%, and minerals such as sand and clay are 80wt% ~ 85wt%. The rest is water. The oil sand oil produce...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C02F9/08
Inventor 李志源许忠郎莹吴玉祥段超陈雪峰李玉善张静高敏许多亮吴建
Owner 庆华集团新疆和丰能源化工有限公司