What is Aeration?
Aeration is a simple yet versatile secondary treatment that can be used for a variety of purposes, from removing gases and harmful compounds from wastewater to promoting the action of microorganisms in decomposing solids.
How to more effective Industrial Aeration?
Using aeration in an industrial environment can produce streams of biochemical oxygen demand (BOD), chemical oxygen demand (COD), and ammonia concentrations that have orders of magnitude higher than municipal waste. Therefore, it is especially important that the device operates with maximum efficiency in order to meet legal requirements as economically as possible.
Here are five tips for ma?ximizing system effectiveness and operational sustainability when using industrial aeration equipment’s:
1) Check if the air distribution is uniform
Visually inspect the ventilation system to ensure that the air is evenly distributed and adjust if not. Regular evaluation can improve treatment efficiency by eliminating dead zones. Proper mixing helps ensure a uniform oxygen distribution and prevents stratification and sedimentation.
2) Monitor the depth of the equipment
Setting the mechanical aerator to the correct depth maximizes mixing and aeration at the lowest possible amperage. This should be checked regularly to keep energy consumption as low as possible.
3) Position of each aerator at the specific location
Vibration can cause displacement, so check the position of the aeration device regularly to make sure it meets the design specifications exactly. For floating equipment, make sure the berth is safe and properly maintained.
4) Perform regular maintenance
Improper device maintenance can reduce performance and increase costs. Units that are constantly exposed to excessive vibration can fail. That is, the equipment needs to be repaired or replaced.
Regular inspections can prevent small problems from becoming big ones. Typical maintenance items include:
· Checking seals
· Lubricating bearings
· Measuring amperage draw to detect fouling
· Inspecting air inlets and air delivery equipment
· Making sure filters aren’t clogged
With your subsurface aeration equipment:
· Make sure diffusers are not broken, clogged, or damaged
· Check the motor regularly for leaks
· Remove waste that may have collected on the equipment
5) Regularly Test Dissolved Oxygen Profiles
It’s important to go beyond visual inspection and regularly test the oxygen level in various parts of your treatment basin. Try using dissolvedoxygen control sensors, and stage unit operation to match the DO demand.
If you can lower DO, set points a little at a time. Since each system is unique based on its biomass and treatment stream, some plants may require a DO level of 2 to 3 mg/L, while a similar facility with similar reactor conditions and treatment goals can run properly with a DO level of less than 2 mg/L.
Don’t forget that water temperature must be controlled, as it an important factor which determines the dissolved oxygen levels.
The following points are important
· Clean, calibrate, and repair all field-installed probes to ensure accurate measurements. Make sure the ventilation values ??are consistent.
· Make sure the equipment readings are taken carefully and they match the reference readings.
· In addition to regularly testing DO parameters, oxygen uptake should be measured. This respiratory rate measurement determines the oxygen demand of the biomass.
· Collect samples across the reactor and compare the results to determine if the target parameters have been reduced and the rate at which they are being reduced. Monitoring helps the user adjust the speed of the aerator to prevent excess or deficiency of aeration.
Enhancing aeration for any treatment unit is mostly dependent of effective operation of the treatment and regular inspection of the plant. Temperature, food-biomass ratio, etc. should be kept at optimum levels in the plant for increasing efficiency of surface aeration.You can also consider using a control system to better adjust the performance of your ventilation system.
What can we offer?
If you need information about the best aeration equipment available for your wastewater treatment challenges, contact Netsol Water and our technical experts will determine the appropriate size, layout and operation of your next aeration or mixing system.Tailor-made ventilation aeration solutions can be made available to you upon your request.
We are India’s leading water and wastewater treatment solution company which covers all the needs of any water and wastewater treatment scheme on all levels. We have the expertise to provide wastewater solutions at domestic, industrial and municipal level.