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Application of air floater in wastewater treatment

Company Info

Pragmatic, innovative Gongyuan Group will continuously apply decade's rich experience into various types of conventional or sophisticated water treatment projects flexibly.The group is composed by Wuxi Gongyuan Environmental Equipment & Technology Co., Ltd, Wuxi Gongyuan Machinery Co., Ltd and Wuxi Gongyuan Automation Technology Co., Ltd. It has set up an advanced water treatment craft lab and Environmental Innovation Centre with Jiangnan University, Changzhou University and Chinese Academy of Sciences to make renovation and provide total support solution for former and new clients. The successful achievements for Petro China, Sinopec, CNOOC, startlake Group, Topfond Pharmaceutical Group, Wahaha Group, Yili Industrial Group, Qingmao Textile Corporation, Zhejiang Yinan Printing Corporation, Jinyu Textile Corporation, Tjoy Group, Kubota Corporation, PAQUES, Bluestar Group, Sujin Gas Group, Chia Tai Group ect. They witness our reputation and good identity by the designed and manufactured Dissolved Air Flotation with many patents.

We are looking forward to further innovative DAF products and service on global enviromental treatment solution.

Air floaters are widely used in wastewater treatment, mainly used for emulsified oil that is difficult to be removed by natural precipitation, and suspended solids with relative density close to 1.Applicable wastewater includes oily wastewater, papermaking wastewater, dyeing wastewater, electroplating wastewater, etc., and can also be used to concentrate remaining sludge. The following describes its application in wastewater treatment

1.   Treat oily wastewater

The range of oily wastewater is very wide, and a large number of oily wastewater will be produced in petrochemical, machinery processing, food processing and other industries. The oil and gas flotation method is mainly used to remove the oil in the emulsion state.

2.  Treatment of printing and dyeing wastewater

Printing and dyeing wastewater has high chromaticity and complex water quality. BOD5/COD ratio is relatively low, and the printing and dyeing wastewater can be treated by air flotation. For printing and dyeing wastewater containing sulphide and disperse insoluble dyes, the application of gas flotation method has remarkable effect.

3.   Processing paper waste water

Papermaking industry is one of the industries that consume a lot of water, among which the papermaking section produces about half of the displacement of the whole papermaking process. White water of papermaking contains a large number of fibers, fillers, rosin jelly and so on. The treatment of white water with air float machine can not only recover the fibers, improve the utilization rate of resources, but also make white water recycled, save water resources and reduce the discharge of waste water. According to practical operation experience, it takes only 15~20min to treat white water with gas floatation, with short time, the removal rate of suspended material is above 90%, the removal rate of COD is about 80%, and the concentration of scum is above 5%


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