Abstract:
The Thesis deals with study of separation model to improve municipal solid wastemanagement efficiency. The study area was 200 years Rattanakosin Village, Prachatipat District,Pathumthani Province. The hundred and eigthy chosen houses, trained with MSW sorting andrecycle practice, were categorized in to two groups. The first group was provided with the colorplastic bags for selected garbage type separation while the provision was neglected to the latergroup. MSW weighing and composition analysis were applied before and during the separationmodel application. The waste saparation model focus on two main waste streams hazardouswaste and general waste. In order to facilitate the treatment and disposal technology selection aswell as transportation facility, the general waste was further categorized into organic wastestream (aim for composition, collected on Monday Wednesday and Friday), valuable waste (aimfor trading, collected on Sunday) and miscellaneous waste (aim for landfill disposal, collected onTuesday, Thursday and Saturday).The Ratanakosin village generated 79.82 ton of waste per week with the wastegeneration rate of 0.78 kilogram/person/day. The valuable waste recycle (7.8 percent) of thesewaste stream was done prior waste disposal by midnight three-wheel collector, municipalcollector during transportation and disposal site scavenger. The composition of waste at disposalsite was as follow : organic waste 62.54 percent, paper 14.50 percents, plastic 13.56 percent,glass 4.9 percent and metal 1.65 percent.During the period of model application, it was found that the waste generation ratefrom the two studied housing group were reduce to 0.48 and 0.36 kilogram/person/day for theplastic bag provision group and the non-plastic bag provision group, respectively. The firstgroup, however as plastic bag was the tool for separation, showed the good compliance result tothe specified waste separation and collection. The component of organic waste in the wastestream at the day of specified organic waste collection was as high as SO.73 percent while themiscellaneous waste at the specified day was 39.77 percent. It is noted that the modelapplication help to increase the percentage of valuable waste separation to 9.33 percent andfurthermore 5.72 percent of the total waste was readily sorted out for sale by the studied housinggroup. The separation of hazardous waste, however, was somehow disappointed as only 0.47percent was separated and 0.17 percent of the total waste was sorted out by the studied housinggroup.In order to compare the economical aspect in the same basis, the ratio of tradingbenefit of valuable waste in term of bath per kilogram of waste generated were calculated. It wasclear that the benefit return of separated valuable waste from the model application group withplastic bag provision showed higher ratio (0.2 bath/kilogram) than either the non-plastic bagprovision group or former study before model application (0.13 and 0.14 bath/kilogram)From this study, it was found that that the separated model, when implement tostudied housing, unable to change the composition of the total waste but help to separatedselected waste stream lead to higher benefit obtained and facilitate disposal and treatmenttechnology.