Welco engineering Ltd. successfully working with Sewage treatment plant process that includes sewage treatment on primary, Secondary or biological and tertiary treatment process to improve quality of wastewater for recycle
![](https://welcoeng.com/wp-content/uploads/2022/04/STP.jpg)
Welco engineering Ltd. successfully working with Sewage treatment plant process that includes sewage treatment on primary, Secondary or biological and tertiary treatment process to improve quality of wastewater for recycle