Payel roy's question Return to communitySubmit question This post is amazing. Thank you for sharing with us. Payel roy03/12/2021 - 10:26 Related to this case study Upflow filter - Constructed wetland Reply Report Add new comment Your name Email The content of this field is kept private and will not be shown publicly. Reply About text formats Plain text No HTML tags allowed. Lines and paragraphs break automatically. Web page addresses and email addresses turn into links automatically.