The use of expanded clay aggregate for the pretreatment of surface waters on the example of a tributary of Lake Klasztorne Górne in Strzelce Krajeńskie

Limnological Review

Wiśniewski Grzegorz¹  Drozdowski Jakub¹  Łopata Michał¹  Czerniawski Robert²  Czerniejewski Przemysław³ 

[1] Department of Water Protection Engineering, University of Warmia and Mazury in Olsztyn, Prawocheńskiego 1, 10-957Olsztyn, Poland;Department of Zoology, University of Szczecin, Felczaka 3c, 71-412Szczecin, Poland;Facility of Fisheries Management, West Pomeranian University of Technology Szczecin, Kazimierza Królewicza 4, 71-550Szczecin, Poland;

关键词: water protection;    biogenic elements;    ceramsite;    pretreatment plant;    watercourse;   

DOI  :  10.1515/limre-2017-0001

来源: DOAJ

【 摘 要 】

The paper presents a proposal for the treatment of river water based on expanded clay (ceramsite). It is a lightweight mineral aggregate containing components relative to phosphorus adsorption (calcium, iron, manganese, aluminum). A pilot plant on a fractional technical scale was built on a nutrient rich (phosphorus up to 0.4 mg dm−3, nitrogen up to 10.0 mg dm−3), small (mean annual flow about 0.04 m3 s−1), natural watercourse (Młynówka River, a tributary of the Otok Channel, Noteć basin, the municipality of Strzelce Krajeńskie). The monitoring included quantitative and qualitative measurements of the water stream in 2014-2015. On the basis of the examinations, the calculated effectiveness of ceramsite filters in removing major contaminants from water was: for total nitrogen 5-6%, phosphorus 12-16%, and for suspensions 17-29%. The effectiveness of the treatment is highly influenced by hydraulic load, so this type application on a full-scale should occupy a sufficiently large volume. Taking into account simplicity of performance, ease of operation and low cost of construction and maintenance, such pretreatment plants based on expanded clay would seem to be a promising tool for the protection of surface waters in catchments of small rivers and streams.

【 授权许可】

Unknown