Japenese johkasou technology based packaged sewage treatment plant

Why Packaged Sewage Treatment Plants are considered better than Septic Tanks for sewage treatment?

Packaged Sewage Treatment plants like Johkasou STP (a popular system of packaged sewage treatment plants in Japan) are considered better than septic tanks for sewage treatment. Here are several reasons why packaged sewage treatment plants are often preferred: Enhanced Treatment Process: Packaged...