direct filtration वाक्य

Direct filtration involves a short period of pre flocculation stage followed by the filtration process.
The prominent deep bed filtration processes currently used are direct filtration and contact-flocculation filtration.
To remove the remaining solids and organic compounds from the wastewater stream, direct filtration method is utilised with prior flocculation.
The downside of using direct filtration is that microbes are able to grow within the channels of the filter and hence reproduce throughout long operating runs.