Combined filtering and deoiling equipment for oily sewage treatment

By employing a combined filtration and oil removal device in oily wastewater treatment equipment, utilizing coalescing filter cartridges and hydrophilic modified quartz sand filter media, the problems of packing caking and limited suspended solids interception capacity are solved, achieving compact equipment and efficient oil removal effect, while reducing maintenance costs and operating time.

CN122520173APending Publication Date: 2026-08-07SHENZHEN CLEAR SCI & TECH
0 Cites 0 Cited by

Patent Information

Application Number
CN202610868838.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-06-16
Publication Date
2026-08-07

AI Technical Summary

Technical Problem

In existing oily wastewater treatment equipment, packing filters are prone to caking, and cartridge oil separators have limited ability to intercept suspended solids, resulting in large equipment footprints, long processes, and frequent maintenance. They are especially difficult to operate stably for a long time under conditions of high oil content and high suspended solids.

Method used

The combined filtration and oil removal equipment has multiple detachable coalescing filter elements inside the tank. Each filter element is filled with hydrophilic modified quartz sand filter media. Combined with the coalescing layer and the packing cavity, it can achieve the filtration of suspended solids and the coalescence of oil droplets. It is also equipped with a backwashing system to prevent caking. The equipment has a compact structure and the coalescing filter elements can be disassembled and replaced individually.

Benefits of technology

It effectively avoids large-scale packing layer caking, extends the cleaning cycle, has a compact size, is easy to maintain, is suitable for site-constrained occasions, and provides stable and reliable effluent quality, making it suitable for oily wastewater treatment systems with large fluctuations in water quality.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The present application belongs to the technical field of oily wastewater treatment equipment, and particularly relates to a combined filter and oil removal equipment for oily wastewater treatment. The equipment comprises coalescing filter cartridges and modified quartz sand fillings arranged in the coalescing filter cartridges, and combines a traditional filling filter with a filter cartridge type coalescing oil removal device to form a structure of 'fillings in filter cartridges'. The present application disperses the filter fillings in the coalescing filter cartridges, effectively avoids the problem of hardening of large filling slabs, improves the stability and service life of the system, and has the functions of efficient oil removal and filtration of suspended solids. The equipment has compact structure, small volume and stable operation, can significantly improve the filtration efficiency and reduce the maintenance frequency, and is suitable for oily wastewater treatment systems with large water quality fluctuations.
Need to check novelty before this filing date? Find Prior Art