Application - Nitrogen Removal
See the Big Picture
Hach, the industry leader in nutrient monitoring, has expert service and the most extensive portfolio of online and lab instrumentation—so you can see the BIG picture.
Nitrogen Removal – How It Works
Nitrogen enters wastewater treatment plants mainly as Ammonia and is typically removed biologically. Utilizing aeration, the nitrification stage utilizes aerobic bacteria to turn Ammonia into Nitrite and then Nitrate. Nitrogen removal happens in the denitrification stage as bacteria consume the Oxygen from Nitrate turning it into Nitrogen gas that escapes into the atmosphere.
Energy cost savings
Aeration can be 70% of a plant’s budget because most wastewater treatment plants play it safe by running their blowers full speed 24 hours a day 7 days a week. Knowing your Nitrate and Ammonia levels with seasonal or daily fluctuations is critical to save you money by knowing when to turn off the blowers. How would more frequent or real time monitoring help you see the BIG picture?
Product Solutions
Measurement Solutions – What and How to Measure
Hach provides on-line instrumentation for real-time continuous monitoring as well as the complete lab solution.
Online Solutions
| Ammonia | AMTAX™ sc Analyzer |
| Ammonium | NH4D sc Sensor |
| Dissolved Oxygen | Luminescent Dissolved Oxygen (LDO®) |
| Nitrate | NITRATAX™ sc Sensor |
| Nitrate | NO3D sc Sensor |
| Organics | UVAS sc Sensor |
| pH/ORP | pH/ORP Sensor |
| pH | pH Sensor |
| Sludge Level | SONATAX sc Probe |
| Suspended Solids/Turbidity | SOLITAX® sc Sensor |
Automatic Samplers
| Sigma Samplers |
Data Management Software
| Hach Water Information Management Solutions |
Lab and Portable Solutions
Instruments
| Spectrophotometers | |
| Portable Colorimeters | |
| Dissolved Oxygen | HQd Meter |
| ORP | HQd Meter |
| pH | HQd Meter |
| Suspended Solids/Turbidity | TSS Portable |
Chemistries
| Ammonia | Reagents, Standards, Test Kits |
| BOD | Reagent, Supplies |
| Dissolved Oxygen | Test Kits |
| Nitrate | Reagents, Standards, Test Kits |
| Nitrite | Reagents, Test Kits |
| pH | Test Kits, pH Buffers |
| Total Nitrogen | Reagents, Standards |
| TKN | s-TKN Reagents |
| Multiple Nutrient Parameters | Reagents |
Application Articles

Trucking in Technology: WE&T December 2010
Nitrogen Credit Trading Creates Opportunities for WWTPs
New Lab Techniques Help Plant Achieve Timely Process Control
Controlling Biomass Quantity, Quality at MBR Plant
Automatic Caustic Dosing Reduces Wastewater Plant's Costs
Advanced Online Instrumentation Helps Facilty Meet BNR Goals
New Luminescent Technology Brings Faster, More Accurate CBOD Analysis
Rock Creek Maintains Optimal DO Levels to Reduce Energy Consumption
Applying Oxidation Reduction Potential Sensors in Biological Nutrient Removal System

