Effluent treatment for manufacturing protein supplements – Pakistan Industrial sector
Monday, January 30th, 2012 3:13:04 by Ahmed Tariq
Effluent treatment for manufacturing protein supplements – Pakistan Industrial sector
The effluent treatment section is the last part of the process. The problem originates because typically discharge from a process such as this has a BOD of 3000mg/L (Stanbury, 1987)
and the acceptable level of discharge into rivers is 30mg/l. Therefore, it important to discharge this effluent stream in a suitable manner as to not incur any excess charges for damaging the local environment.
There are two main approaches to this problem. Firstly, the stream can be treated in the process plant to remove the organic matter and reduce the BOD to an acceptable level for discharge. Due to low level of solids in the stream they can be removed by filtration.
The solids that are removed by the filter then form MYCS compounds and these can be sold to the farming market. Another benefit to this approach is that the water that is distilled off can then be recycled to the top of the process and used to dilute the molasses.
A second approach is to pay for it to be treated by a local wastewater company. Although such companies would charge a fee for this service it does have some benefits. Such benefits are that the process would not have to pay out for a filtration unit. Although
the cost a filtration unit would indeed pay back the initial capital cost by not having to out source the treatment process and therefore make the process more economical it may be impractical to have such a device in a the site that is short on free space.
Also, as well as the capital cost of any filtration unit there would be maintenance costs to consider.
There is a third possible option that could be taken. This is a combination of the previous two. The process could have a filtration unit which would be on a smaller scale and could act as a pre-treatment method before the effluent is discharged to the wastewater
company. This would manage to decrease the costs that would be payable to the company.
Short URL: https://www.newspakistan.pk/?p=11077
Posted by Ahmed Tariq
on Jan 30 2012. Filed under Sci-Tech.
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