Comprehensive treatment method for oily sewage and comprehensive treatment system

Abstract

The invention belongs to the technical field of sewage disposal and relates to a comprehensive treatment method for oily sewage and a comprehensive treatment system. According to the novel sewage treatment system provided by the invention, an oil-water separation system, a floatation scum scraping system, an anaerobic hydrolytic acidification system, a facultative system, a biological contact oxidation system, an MBR (Membrane Bioreactor) / reverse osmosis process system, an automatic control equipment system and the like are integrated into a mobile closed integrated sewage treatment process in a high modularized manner, odors generated by the anaerobic hydrolytic acidification system are conveyed to the biological contact oxidation system, and odor treatment is carried out by using activated sludge. The method and the system have the advantages of simplicity, small investment, low operating cost, convenience in maintenance management, good effect and the like, the treated sewage is discharged after reaching standards, and generated odors are subjected to organized disposal and are discharged after reaching standards, so that the requirements of national environment-friendly policies at present and in future are completely met.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and relates to a sewage treatment method and sewage treatment equipment, in particular to a comprehensive treatment method and a comprehensive treatment system for oily sewage. Background technique [0002] Sludge is solid and semi-solid waste produced in the process of oil exploitation, gathering and transportation, and oil refining, which contains a large amount of suspended solids, oil and water, as well as various chemical additives and other harmful substances. In the process of sludge disposal, a large amount of sewage will be produced. The characteristics of sewage are: complex water quality, high oil content, high salinity, a certain amount of chemicals, and a large amount of scum and sludge, etc., which threaten storage at all times. surrounding environment of the land. Due to the wide distribution of oilfields, the generated sludge is not suitable for long-distance transshipme...

AI Technical Summary

Problems solved by technology

Single biological contact oxidation process, slow biofilm formation, long start-up period, and the high concentration of odor generated in the anaerobic hydrolysis and acidification section has a great impact on the ambient air quality around the facility

The existing mobile integrated treatment facilities generally have a single treatment technology and a small treatment capacity, and can only treat some slightly polluted wastewater, but cannot effectively treat the odor generated in the anaerobic hydrolysis and acidification section of the sewage treatment process.

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