The Use of Organic Polymers as Coagulant Agents in the Chemical Purification of Peat Derived Runoff Water

Authors:
Elisangela Heiderscheidt, Joseph Ngakfumbe, Anna-Kaisa Ronkanen, Bjørn Kløve

Book:
Proceedings of the 14th International Peat Congress

Venue:
Stockholm

Keywords:
coagulant, peat-runoff-water-purification

Documentfile:
Heiderscheidt et al 2012: The Use of Organic Polymers as Coagulant Agents in the Chemical Purification of Peat Derived Runoff Wa

Summary:

Theme VII. Ecology and management on forested peatlands

SUMMARY

Peat extraction activities such as drainage and the exposal of peat layers are known to increase the leaching of pollutant substances resulting in the eutrophication and siltation of receiving water bodies, causing water quality deterioration. The effective treatment of discharging waters is therefore of fundamental importance. This study aims to develop the chemical purification of peat derived runoff water via application of organic polymers as coagulant agents in the treatment process. Obtained results show that organic coagulants, polyDADMAC and polyamine achieved fairly high purification levels (average: 90 % tot-P, 92% PO_4-P, 85% SS and 31% TOC). Furthermore, they required consecutively 60 to 75% lower dosages than the tested inorganic coagulant polyferric sulfate.