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Using Calcium Nitrate To Enhance BOD Removal
A common problem in aerated stabilization basins (ASBs) is oxygen deficiency. This can arise for a variety of reasons, such as a power outage, aerators being offline for maintenance, oxygen scavenging by sulfur-containing chemical compounds, or upstream production...
Free vs Bound Chemical Analysis
The return of healthy biological solids is essential to the performance of activated sludge systems. Along with concentrated biomass, inhibitory and toxic chemicals that can cause WET testing failures or treatment deficiencies may be returned to the system by being...
Flow Cytometry in Wastewater Treatment
Five Key Areas To Improve Your Wastewater System
Wastewater management is a multifaceted endeavor. Below are five critical areas that can significantly enhance your system's effectiveness. 1. Generating reliable laboratory data While it’s true what they say, “you can’t control what you don’t measure,” at...
AAL Testing Suites
Pulp and Paper Within our Pulp and Paper testing suite, AAL offers two test groups unique to the Pulp and Paper industry. Terpenes and Resin Acids are two chemical classes found naturally in trees. Turpentine, which consists of terpenes such as alpha-Pinene and...
Post Hurricane Support
Featured Articles
Odor and H2S Control
EBS recently assisted a paper mill with odor issues associated with their aerated stabilization basin (ASB) wastewater treatment system. The formation of reduced sulfur compounds (hydrogen sulfide, methyl mercaptan, dimethyl sulfide) occurred in a large unaerated...
Keys to Success Before, During, and After an Outage
Scheduled vs Unplanned Outages There are two types of outages, scheduled and unplanned. Scheduled outages are annual affairs at roughly the same time each year and are used to conduct maintenance or other work that cannot be performed while the plant/mill is in full...
Storm Preparedness and Recovery Plan
High winds and rain from hurricanes have the potential to damage wastewater treatment facilities leading to long, unplanned outages. As we are in the midst of another hurricane season, it is essential for wastewater management teams to take appropriate measures to...
Improving the Performance of Activated Sludge Systems — An Operator’s Perspective
It is generally accepted that aerobic biological treatment systems are robust and stable to the extent that eight key growth pressures are controlled: Organic Loading (BOD or COD) Dissolved Oxygen Temperature pH Nutrients Retention Time Inhibitory or toxic compounds...
Unmanned Surface Vessel (USV) Used to Conduct Hydrographic Surveys
EBS uses an Unmanned Surface Vessel (USV) to conduct Hydrographic Surveys in different bodies of water from clean to wastewater. The USV is equipped with a single beam echo sounder optimized for shallow water hydrographic surveying and a dual-frequency transducer....
Utilizing Bioaugmentation to Degrade Black Liquor Spills
In the Kraft paper-making process white liquor, which is NaOH (sodium hydroxide) and Na2S (sodium sulfide), is used to “cook” wood chips in a piece of equipment known as the digester. In the digester, the wood chips are “cooked” using high temperature and pressure in...