Oxidation for wastewater odor control involves the application of a strong chemical oxidizing agent to the wastewater. The oxidizing agent is used to chemically react with dissolved sulfide, converting it to sulfate or sulfur. In addition to dissolved sulfide, many other odorous compounds are treated by the oxidizing agent.
Do wastewater treatment facilities have an odor?
In general, most areas of a wastewater treatment facility contain some level of odor. Depending on the location of your site, you’ll most commonly have issues in primary treatment and sludge-handling areas, in addition to these areas:
How do you get rid of wastewater smells in a facility?
Some wastewater treatment facilities implement multi-million-dollar ventilation systems, which often see mixed results for the level of investment. Others use methods like masking agents that do little other than temporarily cover odors and provide limited relief.
How does a chemical odor removal system work?
The removal mechanism is purely chemical and is not subject to upsets as are biological processes. The chemical balance in the system is automatically and continuously maintained, even under changing loading conditions, minimizing the chance for odor break-through.
Why is my wastewater smelling like odor?
Odour is often a sign that more anaerobic digestion is occurring than there should be. Given that aerobic digestion is a much faster process than anaerobic digestion, it is likely that the wastewater is being under-treated.
What can be used to remove odour from wastewater?
Hydrogen sulfide can be solubilized with a solution of sodium hydroxide. However, the other odor-causing compounds are best treated by sodium hypochlorite. In a single-stage scrubber system, sodium hydroxide and sodium hypochlorite are used in a recirculating chemical solution.
Do water treatment facilities smell?
It's important to remember that all treatment facilities have the potential to generate odors. In most cases, the root cause of the smell is an anaerobic, or septic, condition where the oxygen flow to the water or wastewater is limited.
How do you mitigate a smell?
6 Tips for Reducing Body OdorKeep Yourself Squeaky Clean.Use Antibacterial Soap.Towel Off Well.Use 'Industrial Strength' Antiperspirants.Keep Your Clothes Clean.Cut Out or Cut Back On Certain Foods or Drinks.
Do sewage treatment Works smell?
A well maintained septic tank or sewage treatment plant should not be giving off any unpleasant odours, despite that fact that it is a receptacle for human waste! Septic tanks and treatment plants are designed to contain the naturally occurring odours that will arise as part of the treatment process.
Does it smell near a wastewater treatment plant?
Common odors lingering in and around treatment plants smell like rotten eggs, ammonia, or garlic, among other things. Sometimes the odor is described as earthy or organic. Generally speaking, foul odors at treatment plants originate from the anaerobic decomposition of organic compounds.
Does it smell to live near a water treatment plant?
If an anaerobic digester is sealed off with a cover or similar enclosure, the smell can't go far. If the digestion tanks are open, that smell will permeate the air. The smell can travel, so people who live nearby may complain.
Which of the following are method to control odour pollution?
Industrially hydrogen peroxide has been used for years to deodorize, disinfect and neutralize hazardous pollutants. Ozone is a very powerful oxidizing agent it is produced in-situ. Ozone in water decomposes to oxygen and hydroxyl radicals, each of which has a higher oxidation potential than either ozone or chlorine.
What is odor control system?
Odor Control Systems Odor control systems are designed to reduce or completely eliminate all traces of unwanted scents within an air supply.
What is odor control technology?
Odor control technology is simple. It prevents and/or captures unpleasant odors across a wide array of products including athletic shoes, running shorts, yoga pants, and more without negatively impacting the hand and moisture management properties of the fabric.
Why does sewage treatment plant smell?
There are a few main causes that will result in your sewage treatment plant beginning to smell. The main reason is simply a build-up of sludge over time. Sewage treatment plants need to be emptied at least once a year because only the wastewater is ejected. A bad smell usually just means that it's time to be emptied.
Are sewage fumes harmful?
The principal risks and effects associated with exposure are: Hydrogen sulfide poisoning. Exposure to low levels of hydrogen sulfide causes irritation of the eyes and respiratory tract. Other symptoms include nervousness, dizziness, nausea, headache, and drowsiness.
Do sewage pumping stations smell?
Surprisingly, sewage pumping stations don't smell as bad as a lot of people may think. They are designed with the people living nearby in mind, however, when they aren't maintained properly, problems can still arise like a blockage or a build-up of oils and grease, which is when bad smells can start to appear.
What are the odors of waste water?
These processes can produce various odors, the most common of which found include hydrogen sulfide, ammonia, sulfur dioxide, skatoles, mercaptans, amines and indoles. Thankfully, there are various natural treatments and deployment technologies that can keep these odors at bay.
What factors are important to consider when determining the delivery method for your odor control?
It’s important to take temperature, humidity, precipitation and wind into consideration when determining the delivery method for your odor control. For example, if you’re in an area with frequent rain, you have a significant amount of water running into the plant.
What are the areas of wastewater treatment?
In general, most areas of a wastewater treatment facility contain some level of odor. Depending on the location of your site, you’ll most commonly have issues in primary treatment and sludge-handling areas, in addition to these areas: 1 Headworks 2 Clarifiers 3 Sedimentation basins 4 Lift stations 5 Lagoons 6 Biosolids treatment 7 Wastewater septage dumping
Why is agility important in odor control?
Agility is also important in odor control. Once a system is installed, it should be flexible. For example, if you only have neighbors to your north, equipment that can be set to only to disperse chemical solutions when the wind is blowing that direction can be a helpful solution.
What are the most common odors in sludge?
Depending on the location of your site, you’ll most commonly have issues in primary treatment and sludge-handling areas, in addition to these areas: These processes can produce various odors, the most common of which found include hydrogen sulfide, ammonia, sulfur dioxide, skatoles, mercaptans, amines and indoles.
Does wastewater have a odor?
Even on a cold day with no wind, odor still emanates from a wastewater treatment plant. Plants, treatment facilities, landfills and other sites are facing increased pressures to reduce odor emissions around their workers and communities. Because of this, odor control is evolving into an essential component of the wastewater treatment process.
Can you control odor in wastewater treatment plants?
Depending on the size of your facility, you might have many sources of odor that require multiple systems to control. There’s also the possibility that your odor could be controlled with a singular system around the perimeter of your wastewater treatment plant. It’s important to understand where odors come from and what sort ...
It's Time to be Proactive
Each site is unique- and each has its own odor problem when conducting wastewater nutrient removal processes. Therefore, the odor control solution must be customized to address these specific challenges. A properly implemented odor control system will be beneficial to both the surrounding community and employees at the treatment plant.
Start at The Source
You might have multiple sources of odor depending on how large your facility is. This could require multiple systems to manage. You might also be able to control your odor with one system at the plant's perimeter. It is important to know where the odors originate and what system you are trying to control.
Common Sources of Odor in Wastewater Treatment
Most wastewater nutrient removal facilities have some degree of odor. You may have problems in the primary wastewater nutrient removal treatment or sludge-handling areas depending on where you are located. Some examples are:
Basins for Activated Biosolids
Basins used to activate biosolids are often large and open. These basins allow smells to freely drift into surrounding areas. These odors can be neutralized naturally with biochemical delivery systems that can be customized.
Dumping of Wastewater
Plants can be affected by raw septage from haulers, which can cause odor problems. These odors can be effectively removed by fan or nozzle atomization systems located near the unloading points and vented or open downstream locations.
Weigh The Elements
The outside environment and geography play a significant role in the way odors are transmitted and treated at wastewater nutrient removal facilities. When deciding the delivery method of your odor control, it is important to consider temperature, humidity and precipitation.
Find Your Solution
Once you’ve determined the origin (s) of the odor and your next steps, it’s important to be flexible once a system has been installed to tackle any new odor control issues that might arise. Equipment that is able to disperse chemical solutions only when it blows in that direction, for example, can be helpful if there are no neighbors to your north.
What causes odors in wastewater?
Any place or process in which wastewater is collected, conveyed or treated has the potential to generate and release nuisance odors to the surrounding area. However, most odor problems occur in the collection system, in primary treatment facilities and in solids handling facilities. In most instances, the odors associated with collection systems and primary treatment facilities are generated as a result of an anaerobic or "septic" condition. This condition occurs when oxygen transfer to the wastewater is limited such as in a force main. In the anaerobic state, the microbes present in the wastewater have no dissolved oxygen available for respiration.
What are the two types of technologies used to control odors in wastewater?
These technologies can be split into two main groups: vapor-phase technologies, used to control odorous compounds in the air or gas; and liquid-phase technologies, used to control odorous compounds in ...
What is wet air scrubbing?
Wet air scrubbing is the most flexible and reliable technology for vapor-phase wastewater odor control. This technology can be used to treat virtually any water-soluble contaminant. In addition to hydrogen sulfide and "organic" odors, wet scrubbing is very effective for ammonia removal. In a wet air scrubber the odor contaminants are solubilized from the vapor phase into an aqueous chemical solution. The removal mechanism is purely chemical and is not subject to upsets as are biological processes. The chemical balance in the system is automatically and continuously maintained, even under changing loading conditions, minimizing the chance for odor break-through. The application of a multi-stage scrubber allows the utilization of a different chemical solution in each of the stages to efficiently use chemicals and target a wide range of contaminants for treatment.
What is the most common contaminant in wastewater?
As mentioned above, in raw wastewater applications the most prevalent contaminant is hydrogen sulfide, but other organic odorous compounds typically are present as well. Hydrogen sulfide can be solubilized with a solution of sodium hydroxide.
How does bioxide work?
The process uses naturally occurring bacteria to biochemically oxidize dissolved sulfide in the presence of nitrate. This mechanism takes place when the solution is applied in wastewater that contains dissolved sulfide. The sulfide typically is either generated upstream of the injection point where no nitrate exists in the wastewater or is contributed downstream via a septic lateral flow. Nitrate is injected in sufficient quantities to biochemically oxidize the sulfide via the following reaction.
What is liquid phase in wastewater?
Liquid-phase technologies typically are used in collection systems where control of both odors and corrosion are concerns and/or where multiple point odor control is an objective.
What is the chemical reaction that interrupts the sulfate reduction process?
Anthraquinone is a chemical compound that interrupts the sulfate reduction process carried out by sulfate-reducing bacteria (SRB) in wastewater under anaerobic conditions. This metabolic process occurs in the cytoplasmic membrane of the SRB at the cytochrome c3 location. Anthraquinone interacts with cytochrome c3 and specifically disrupts the sulfate reduction process. Anthraquinone is a non-hazardous compound. When used alone, anthraquinone is specific to the control of sulfide. It also can be used in conjunction with the biocide process.
CHALLENGEs
A leading environmental consultant contacted Intellishare Environmental - groundwater remediation company - to supply air pollution equipment associated with an odor emitted from a landfill leachate wastewater treatment plant.
How we did it
Since Intellishare Environmental has multiple product line offerings of remediation systems and a rental fleet, we were able to meet the short and long term needs of the client. The utilization of a regenerative thermal oxidizer allowed us to treat a large volume of air, while keeping the operating cost low.
ABOUT INTELLISHARE
Intellishare Environmental is a groundwater remediation company that uses remediation systems to control VOCs, HAPs and odorous emissions for industry and environment. Multiple products mean we have the right technology. Thousands of installations mean we have the right experience. Ask our satisfied clients-- they'll speak for us. Buy it new.
Where is Knob Creek Wastewater Treatment Plant?
Problem: In 2012, the headworks area at the Knob Creek Wastewater Treatment Plant in Johnson City, Tenn. , was identified as a potential source of fugitive nuisance odor emissions. Albert Greenwell, the plant’s operator-in-charge, sought a solution.
What is the problem with the Anson-Madison Sanitary District?
Problem: The Anson-Madison Sanitary District in Maine treats 4 mgd of wastewater from Madison Paper Industries and the communities of Anson and Madison. The treatment facility is located close to neighbors and has been plagued by odor complaints. Wastewater entering the treatment facility is anaerobic and releases levels of hydrogen sulfide gas at an average of 150 ppm, with spikes of 800 ppm. The district began adding calcium nitrate which, while effective in controlling gas, proved too expensive.
What is the highest level of disinfection required for Loblaws?
Problem: High-strength organic loads (up to 820 mg/L CBOD5, 200 mg/L TSS and 86 mg/L oil and grease) generated by Loblaws’ Atlantic Superstore in Upper Tantallon, Nova Scotia, required the highest level of disinfection to treat up to 4,750 gpd of wastewater.
What is the problem with sludge in pond no 1?
1 of a city in Illinois was taking up treatment capacity and causing odors, accumulating to the point where part of the sludge blanket was exposed to the surface, allowing odors to escape. State regulators were also demanding improvements because BOD5 test results were too high.