Abstract—H. M. The King's initiative Laem Phak Bia
environmental research and development (LERD) project has
been selected Laem Phak Bia sub-district, Ban Laem district,
Petchaburi province which is about 18.5 km away from points
sources at Petchaburi municipal. Transferring community
wastewater was really needed to take HPDE pipe because of
high pressure requirement for 50-cm head between Klongyang
pumping station to the project site and also unpleasant smell in
case of using open channel sewer system. The original point
sources are far away about 5 km to 8 km to in-town collection
pond which is localized at fresh-food markets, households,
shopping center, dessert factories, Thai rice noodle factories,
and government offices in which they produce wastewater
approximately 7,000 m3/d. The pumping capacity was
estimated 3,000 to 3,600 m3/d through 18.5-km HPDE pipe to
the LERD's project site without any interruption. The research
results found that the Royal LERD wastewater treatment
system to decrease the high content of BOD down to under
standard value after overflowing weir crest of the last pond
(pond5). In addition, the anaerobic organic digestion processing
distance was determined by graphical method with free hand
curving that pointing out on 2,000 meters that moving from the
start-up point at Klongyang collection pond through the 18.5-
km HPDE pipe tail. Only the values of BOD and anaerobes had
evidently shown in variable patterns, but the others found more
or less changeable patterns, i.e. COD, NH4, NO2, alkalinity,
hardness, SS. TDS, EC, orthophosphate, total phosphate,
temperature, aerobes, facultative bacteria, total coliform, fecal
bacteria, and DO (0.000 to 0.003 mg/L).
Index Terms—Anaerobic organic digestion, wastewater treatment, nature-by-nature.
Satreethai Poommai, Narauchid Dumpin, and Chatri Nimpee are with the Faculty of Environment, Kasetsart University, Bangkok, Thailand (e-mail: firstname.lastname@example.org, email@example.com).
Kasem Chunkao and Saowalak Boonmang are with the King's initiative Laem Phak Bia environmental research and development (LERD) project and the Faculty of Environment, Kasetsart University, Bangkok, Thailand (e:mail:firstname.lastname@example.org).
Cite:Satreethai Poommai, Kasem Chunkao, Narauchid Dumpin, Saowalak Boonmang, and Chatri Nimpee, "Determining the In-Pipe Anaerobic Processing Distance before Draining to Oxidation Pond of Municipal Wastewater Treatment," International Journal of Environmental Science and Development vol. 4, no. 2, pp. 157-162, 2013.