Sewage project engineering case: integrated dissolved air flotation treatment device

Overview:

The dissolving gas device dissolves air in clean water at a pressure of 3.5~4bar, and the water containing gas is released when it passes through the release device ，due to the sudden decompression, a large number of micro bubbles are generated. These micro bubbles are stuck together with oil and suspended solids etc. impurities, then through the rise of micro bubbles floats to the water surface, and moves to the scum tank through the slag scraper to realize the water quality purifying purpose.

Application:

Removal of floating oil and suspended solids in wastewater pretreatment and post-treatment such as oil refining, paint, light industry, laundry printing and dyeing, restaurant kitchen wastewater, fine chemical industry etc.

Working process:

Preject case : Changi bus depot &rail depot WWTP project （Singapore）

Process flow：

CPI → DAF→ PH adjustment → Sand filter → AC filter→ Discharging

CPI :  Corrugated Plate Interceptor

DAF:  Dissolved air flotation 

AC ：activated carbon 

The main removal of TSS, oil &grease,  COD in wastewater, to meet the local discharge standards. 

Changi bus& rail depot WWTP preject

DAF device ,Installation site 

CPI device ,Installation site