Wastewater Treatment Technology works to be used in Laem Phak Bia, including waste water treatment system. The system relies on water catchment facilities in time for the dirty water. Oxygen by photosynthesis of algae and plankton. Residential wind in the air to help optimize. Decomposition of organic matter and microorganisms in pond water detention time staying for 7 days will help kill germs on the other. The waste water treatment system of the project. Settling ponds and wells dry wells include the pretreatment of wastewater each pond to overflow from the top. And flows into the bottom of the pond next.