Retention of sulfate-reducing bacteria in expanded granular-sludge-blanket reactors

From: Water Environment Research | Date: July 1, 1999| Author: | Copyright information

ABSTRACT: In acetate-fed, expanded granular-sludge-blanket reactors with a liquid upflow velocity between 3.5 and 4.5 m/h and pH 8.0 to 8.5, calcium-containing tap water tended to select for sulfate-- reducing bacteria, whereas demineralized tap water promoted methane production. In a formate-fed, sulfate-reducing, expanded granularsludge-blanket reactor operated at pH 8.25 to 8.65, maximum sulfate removal rate was 9.5 g sulfur/L*d at the slowest liquid upflow velocity tested (3.0 m/h). The latter was only possible if methane-producing bacteria were repressed by two consecutive doses of 3.85 ...

Read all of this article with a FREE trial to HighBeam Research

Related newspaper, magazine, and trade journal articles from HighBeam Research

(Including press releases, facts, information, and biographies)

Michelin-starred chefs join call for tap water at tables ; (1) Support for Standard campaign after one day(2) EVENING STANDARD CAMPAIGN WATER ON TAP
; ...campaign to make asking for and drinking tap water socially acceptable in every eating and...sign a pledge to offer and serve free tap water to customers without prejudice. Hundreds...restaurants to do this and our staff now offer tap water automatically. We really need to change...
Michelin-starred chefs join call for tap water at tables ; Support for Standard campaign after one day
; ...campaign to make asking for and drinking tap water socially acceptable in every eating and...sign a pledge to offer and serve free tap water to customers without prejudice. Hundreds...restaurants to do this and our staff now offer tap water automatically. "We really need to change...
Just like Del Boy, firm sells tap water.(News)
; ...drink giant Coca-Cola is selling purified tap water in a bottle. The company confirmed the...Only Fools And Horses when they sold tap water from what they called the Peckham Spring...behind the process seemed to be that tap water was impure. ``We don't think there are...
The latest magic pill: it's made from tap water and costs pounds 11.95 a bottle Customers claim that tablets give them extra fizz but doctors denounce homeopathic remedy as nonsense
; ...HOMEOPATHIC pharmacy is selling tablets of tap water from Birmingham at a cost of up to pounds...complaints. The remedy is made by mixing the tap water with alcohol. The solution is then shaken...said. "I cannot believe that Birmingham tap water is significantly different to any ...
TAP WATER PERIL; Cover-up claims in baby fluoride safety.(News)
; ...chiefs plan to cover up the dangers of tap water in baby bottles, a leading health expert...FSAI had concerns about the safety of tap water. Minutes of an FSAI meeting from October...planned to urge parents to stay away from tap water. The meeting minutes read: The scientific...
Tap or bottle, you decide ; Water water everywhere and many a drop to drink! Our regional supplier says its tap water is on par with bottled varieties stocked on shelves across the country. Armed with cups and a notepad, reporter PAUL SMITH takes this taste challenge to the streets.
; ...drink! Our regional supplier says its tap water is on par with bottled varieties stocked...Food and drink experts have been tasting tap water from all over Britain, and our region...there is in taste between bottled and tap water. "It is a question of personal taste...
Latinos don't necessarily fear Utah tap water, despite all the fuss.
; ...the benefits of fluoride, not launch a tap water fight. But when research conducted by...Hispanic and Latino immigrants feel (tap water) is unsafe, just like in their home countries...heard the news of Latinos afraid of the tap water wanted to know who had been surveyed...
1-in-4 won't drink tap water
; ...in England and Wales refuse to drink tap water - and more than half are not fully satisfied...maintains. It reveals widespread distaste for tap water, distrust of privatised water companies...some five million people - filter their tap water before drinking it. Five per cent drink...
TAP WATER GAINS NEW SNOB APPEAL.(FRONT)(SUSAN LAMPERT SMITH)(Column)
; ...vinyl countertop -- a glass of Madison's finest tap water. Kathy Tracy, the Curve's queen of the coffee pot...trend, dubbed by Slate as the new snob appeal of tap water. I drink tap water at home, too, she said. Why buy bottled water...
The tide turns as big chains join our tap water campaign ; EVENING STANDARD CAMPAIGN WATER ON TAP
; ...across the capital will now offer free tap water to customers without prejudice. The campaign...alike pledge to help make asking for tap water more socially acceptable. The Standard...within the M25 committed to providing free tap water. Brian Waring, marketing director of...