Risk of installing too many air diffusers.

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WARNING: Beware of the following when choosing an air diffuser.


Risk of installing too many air diffusers.

You should only install the minimum amount of air diffusers
necessary for the wastewater treatment facility.

Some air diffuser manufacturers install too many air diffusers because there is no confidence in the performance of their air
diffusers. However, too many air diffusers use excessive air which cause problems such as poor sedimentation of activated
sludge due to over-aeration. Over-aeration can break flocs of microorganisms and causing pin-flocs that don’t settle well.
In addition, large costs are incurred such as air diffusers’ purchase costs / piping and construction costs / air blower excess
running costs.

OHR promises to show the most effective installation plans
using the minimum amount of OHR AERATORs.

OHR draws up the most efficient installation plans that require only the minimum number of OHR AERATORs / piping and
construction costs / air blower electricity costs. And we also clearly show the calculation sheet of the required air blowing
amount. Please compare required air blowing amount with the number of air diffusers necessary with other wastewater
treatment company’s plans.

Risk of inappropriate layout of air diffusers.

Installation layout of air diffusers is very important.

If air diffusers are laid out inadequately, activated sludge will accumulate on the tank bottom
of the aeration tank due to insufficient aeration, and the aeration tank becomes oxygen deficient. Even in a wastewater treatment
plant built by a major water treatment company, there are many cases where the air diffusers are laid out inadequately.
Many people pay attention to the performance of the air diffusers (e.g. oxygen transfer rate), but do not pay attention to the
installation layout of the air diffusers. However, in reality, it is important to be aware that there are a lot of sites where the
wastewater treatment becomes worse due to bad air diffuser installation layout making it necessary to increase the number of
air diffusers and amount of air blown.

OHR provides you with the optimal installation layout plan
backed by 41 years of experience.

When you inform us of the tank size (length, width, water depth) and some conditions (wastewater volume, BOD or COD value,
etc.), we will show you the optimum number of OHR AERATORs, the optimum installation layout plan, piping configuration, and
calculation sheet of required air blowing amount. (*Free of charge)
We give an undertaking that optimum aeration can be done without sludge accumulation on the tank bottom when you install
OHR AERATORs according to our plans.

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