Skip to main content

Topics, centers, missions

Maps, data, publications

News

Releases,
I'm a reporter

Contact, chat, social media

Organization, jobs, budget

Search

Facebook
Twitter
LinkedIn
Digg
Reddit
StumbleUpon
Pinterest

Who We Are
History
Past Directors

Mission Areas
Regions
Science Centers
Science Support

Briefing Series
Statements
Contacts

Contracts
Grants and Cooperative Agreements
Partners and Cooperators
Building Partnerships

Emergency Management

Data and Tools Topics
Real-time Data
APIs
Science Data Catalog
Science Datasets
Data Management
Data Management Tools
GIS Data

Map Topics
Topographic Maps
Geologic Maps
GIS Data
The National Map
USGS Store
Geographic Names Information System (GNIS)

USGS Publications

Multimedia Gallery

Images
Videos
Audio
Webcams

Featured Stories

National News
State News

Science Snippets

Technical Announcements

Employees in the News

Request Footage
Earthquake Questions
Multimedia Gallery
Key Officials
Congressional

12201 Sunrise Valley Drive
Reston, VA 20192, USA
703-648-5953

1-888-ASK-USGS
Email
Web Chat

Science Explorer

Biology and Ecosystems
Land Resources
Coasts
Data, Tools, and Technology
Energy
Environmental Health
Geology
Mapping, Remote Sensing, and Geospatial Data
Minerals
Natural Hazards
Oceans
Planetary Science
Water

Core Science Systems
Ecosystems
Energy and Minerals
Environmental Health
Land Resources
Natural Hazards
Water Resources

Unified Interior Regions

Frequently Asked Questions

Facebook
Twitter
LinkedIn
Delicious
Digg
Reddit
StumbleUpon
Pinterest

Search

Science+

Science Explorer

Unified Interior Regions

Frequently Asked Questions

Products+

Multimedia Gallery

News+

Featured Stories

Science Snippets

Technical Announcements

Employees in the News

Connect+

About+

Emergency Management

Small-scale Hydrogen Oxidizing Denitrifying Bioreactor

Small-scale Hydrogen Oxidizing Denitrifying Bioreactor

Detailed Description

US Patent 6,863,815 B1

Details

Date added: Friday, May 25, 2018

Explore More Science

patent

Skip to upper content

Privacy Policy
Legal
Accessibility
Site Map
Contact USGS

Science

Science Explorer
Mission Areas
Unified Interior Regions
Frequently Asked Questions
Education

Products

Data and Tools
Maps
Publications
Software
Multimedia Gallery
Park Passes
USGS Library

News

Featured Stories
News Releases
Science Snippets
Technical Announcements
Employees in the News
Get Our News
Media Contacts
I'm a Reporter

Connect

Headquarters
Locations
Contact Us
Staff Profiles
Social Media

About

About Us
Organization
Key Officials
Congressional
Budget
Opportunities
Doing Business
Emergency Management
Survey Manual

U.S. Department of the Interior
DOI Inspector General
White House
E-Gov
USA.gov
No FEAR Act Data
FOIA

Follow