AN ADVANCEMENT IN ODOR CONTROL TECHNOLOGY
PEACEMAKER® Oxidizing/Polishing Dry Air Scrubber provide a two stage chemistry for the control of odors from hydrogen sulfide (H2S), mercaptans, ammonia, amines and other odors generated in wastewater collection and treatment systems. They are easy to use, effective and economic.
- Lift Stations
- Grit Rooms
- Sludge Processing
In what follows, when we say “odor” we mostly mean H2S. We know there are other reduced-sulfur and nitrogen-based compounds involved and we have planned for them, but H2S is the main culprit and is most important in discussion and design.
PEACEMAKER® SCRUBBERS GET THE JOB DONE
A Chlorine Dioxide Layer
This layer releases chlorine dioxide (ClO2) when contacted by H2S molecules. Reactions are instantaneous, and produce inorganic sulfate. Simply stated, salt drops out. Chlorine dioxide is an extremely powerful oxidizing agent. Because it reacts selectively and primarily only with the most offensive odor- producing compounds, it will remain intact longer than chlorine, sodium hypochlorite, peroxide and potassium permanganate. Since unwanted reactions do not occur, power is not wasted and service life is extended.
A Polishing Layer
This layer uses Countervailant® technology. Malodorous molecules contain one or more chemically reactive groups called osmophores. Polishing reactions with these groups are varied, but are most commonly electrostatic and/or polymeric. The worst odors have the strongest negative charges, which are drawn to the positive charges of the Countervailant® chemistry. The union either facilitates a chemical reaction or creates a large molecule of low vapor pressure. A homo–polymer lattice forms around reacted or absorbed molecules and osmophoric activity ceases.
PEACEMAKER® Oxidizing Dry Air Scrubber Physical Specifications and Drawings
|PEACEMAKER® OX Series|
|Vessels||1.9 SP Black/White HDPE|
|Influent Coupling (Diameter)||4″||4″||6″||8″||12″||16″||16″||24″||24″|
|Lower Air Diffuser||3/16″||3/16”||1/4″||1/4″||3/16”||3/16”||3/16”||3/16”||3/16”|
|Height (Without Fan)||33-3/4″||39-3/4″||46-1/2″||55-1/2″||76″||77″||80″||68″||92″|
|Fan (Maximum)||VBL-6||VBW-6||VBW-6||VBW-9||VBW-9||Chicago 2750||Chicago 4250||Chicago 6000||Chicago 9000|
|Media (Maximum Cu-Ft)||6||12||20||48||63||86||151||183||332|
|Nominal Charged Weight (Lbs.)||375||700||1,120||2,600||3,725||5,350||9,105||11,255||18,745|
|Airflow (Maximum CFM)||150||325||500||1,150||1,750||2,750||4,250||6,000||9,000|
|Spec Sheet||PEACEMAKER® 2×2 OX SERIES SCRUBBER||PEACEMAKER® 2.5×2.5 OX SERIES SCRUBBER||PEACEMAKER® 3×3 OX SERIES SCRUBBER||PEACEMAKER® 4x4 OX SERIES SCRUBBER||PEACEMAKER® 5×5 OX SERIES SCRUBBER||PEACEMAKER® 6×5 OX SERIES SCRUBBER||PEACEMAKER® 8x5 OX SERIES SCRUBBER||PEACEMAKER® 10×5 OX SERIES SCRUBBER||PEACEMAKER® 10×7 OX SERIES SCRUBBER|
|Drawings||Passive VBL-6||Passive VBW-6||Passive VBW-6||Passive VBW-9||Passive VBW-9||Passive Chicago 12 Chicago 16||Passive Chicago||Passive Chicago 12 Chicago 24||Passive Chicago 12 Chicago 24 IN Series|
How to Size PEACEMAKER® Oxidizing Dry Air Scrubbers
There are two essential questions to be answered:
- How much airflow is required?Benefits accrue from moving only enough air to maintain a slight negative pressure. This will prevent fugitive malodors and provide the best economics. Higher-than-necessary airflow increases static pressure through the media bed and reduces residence time. A larger scrubber may be needed and cost would increase.To calculate optimum airflow we must determine the potential for air displacement (e.g. gpm pumped into a wet well). Of course, if there is an air exchange requirement for confined space entry or a need for higher airflow for any other reasons, it can be accommodated.
- How much H2S is in that air?This can be a difficult question to answer. It can be influenced by time of day, time of year, residence time, measuring techniques and numerous additional factors. Truth is it is hard to escape applying some judgment in making this determination. Experience helps, of course, but PEACEMAKER® systems have built-in flexibility and scalability, which helps, too. Ultimately, the formula is simple: cfm airflow x ppm H2S in the airflow = required oxidation capacity.This is an important process, and we need to work together. We start with a review of the following form: PEACEMAKER® Oxidizing Scrubber Sizing
When we have determined needed oxidation capacity, we simply match need to the right vessel size and add the right blower to provide desired airflow at the existing static pressure.
LEASE, BUY OR SERVICE CONTRACT? IT’S YOUR CHOICE!
The length of “term” for most PEACEMAKER® leases is one to three years. At the end of term, we provide new media or a new scrubber and you return the old one to us, freight collect. If conditions change from one term to the next, we can change the new scrubber to match the new conditions. You will never be stuck with out-grown and useless equipment. In addition, our lease agreement is like our scrubbers — simple and straightforward.
If your PEACEMAKER® needs to come from a capital budget, this is obviously the way to go. It will still be a great value. Lease or buy, labor and maintenance costs will be minimal. There just is not much to do once the scrubber is up and running besides enjoying the nice clean air and the very quiet phone.
The length of “term” for most PEACEMAKER® service contracts is one to three years. PEACEMAKER® service contracts can be offered for both lease and purchase options. Once H2S loadings and airflow (CFM) are well documented, we would guarantee the life of the Peacemaker scrubber system for the life of the service contract based on those documented H2S Loadings and airflow (CFM) levels.