Lincoln Memorial Reflecting pool uses ozone

Posted by Joel Leusink on October 9, 2012 under Pools, Waterparks, & Spas | Be the First to Comment

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The National Park Service began draining the Lincoln Memorial reflecting pool Wednesday afternoon, the latest attempt to remove algae that had spread across the landmark and overshadowed the $34 million renovation of the site.

Carol Johnson, a spokeswoman with the National Park Service, said officials had made attempts in the past week to remove the algae, which began showing up in the pool about a week after its reopening. Johnson had said earlier that the Park Service expected a “break-in period” for the pool, but no one had anticipated the amount of algae that appeared.

ozone removes algea at the lincoln memorial pool

The amount of ozone, which neutralizes the nutrient food for the algae, will be doubled. That should keep the algae from reappearing, Johnson said.

Previously, draining the reflecting pool has taken up to three weeks, but Johnson said Park Service officials think it can complete the work in a shorter time.

The cost of draining the pool and removing the algae is estimated at $100,000 and will require 65 contractors along with Park Service staff members working full time to complete it, Johnson said.

Access to the reflecting pool will be limited.

“This is a new state-of-the-art system, so there was going to be some trial and error involved,” Johnson said. “But we’re confident the higher ozone levels will work.”

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Learn more about ozone to remove Algae HERE

Swimming in chlorinated pools can lead to cancer: study

Posted by Joel Leusink on September 13, 2010 under Pools, Waterparks, & Spas | Be the First to Comment

Swimming in chlorinated pools can lead to cancer: study

Swimming in chlorinated pools can cause an increased risk of cancer in bathers, Spanish researchers said on Monday.

Researchers from the Barcelona-based Center of Research in Environmental Epidemiology (CREAL) and Research Institute Hospital del Mar studied changes in indicators of mutagenicity — permanent mutation of the DNA — among a group of swimmers in an indoor chlorinated pool.

“The evidence of genotoxic effects were observed in 49 healthy adults after swimming for 40 minutes in a chlorinated indoor pool,” CREAL said in a statement on Monday.

Researchers found indicators of an increase in cancer risk in healthy subjects as well as potential respiratory effects from the chlorine used as a disinfectant, the statement said.

The study was published on Sunday in the US journal Environmental Health Perspectives.

The co-director of CREAL, Manolis Kogevinas, said the findings should not put people off swimming.

“The positive health impacts of swimming can be increased by reducing the levels of these chemicals,” he said.

“In no case do we want to stop swimming, but to encourage the reduction of chemicals in swimming pools,” said Kogevinas, who suggested the problems caused by a reduction in levels of disinfectant could be offset if swimmers showered before taking a dip, wore bathing caps and refrained from urinating

Link to article HERE