Talk:Chemical phosphorus removal

Aluminum sulfate treatment to reduce phosphorus content of lakes

I have moved content about "Aluminum sulfate treatment to reduce phosphorus content of lakes" to here which had been added to eutrophication. I think it fits here but it now dominates the article a bit. So it could either be moved to a sub-article or the other content about chemical phosphorus removal could be built up over time. Copying below what User:ASRASR had said on the talk page of eutrophication. EMsmile (talk) 10:45, 16 May 2022 (UTC)

"The section by User:Kurt Krautmann on alum treatment is well researched and written. I agree it takes up too much space in the article and could be summarized in one much shorter paragraph instead. It could also be moved as is to another article eg nutrient pollution. Alum treatment which has its origins in water and sewage treatment was never designed for addition to natural water bodies. It is an expensive short-term solution to clear lake or pond water of phosphate and deposit it to the benthic zone. It can have serious side effects like acidification and toxic effects on organisms (fish and invertebrates). It should not be seen as a general remedy for eutrophication. It may be useful in some cases where the runoff and discharge sources of phosphorus have already been reduced but there continues to be internal P loading from the polluted sediments causing seasonal algal blooms. This would need to be determined on a case by case basis depending on the lake depth and existence of stable thermocline or even a chemocline. It could be best used in man-made ponds in urban areas to reduce algal blooms (eg during summer periods in temperate zones). Dredging of P-laden sediment however could be a better option. But even in such cases, prevention of P loading to the water body has to be the first priority for action." ASRASR (talk) 09:14, 11 May 2022 (UTC)[reply] EMsmile (talk) 10:45, 16 May 2022 (UTC)