Underground sewage treatment plant, usually shortly for STP, which is developed on the basis of operational experience of sewage treating device at domestic and oversea with advanced biological treating method, while combining our own research and practice. It can remove OD5、COD、NH3-N with stable performance and effective treating capacity, characteristics of auto-run and non-floor occupation saves cost and enjoys easy maintenance. Grass and flowers can be planted on the surface so the environment won’t be affected.
It is suitable for recovery and reuse of water from hotels, restaurants, sanitariums, hospitals, home communities, villages and towns, stations, airports, harbors, factories, mines, troops, scenic spots, industrial organic sewage similar to municipal sewage etc and from slaughtering industry, food industry after treated. Water outlet quality meets national discharge standard and reclamed water reuse system can be designed together with underground sewage disposal system according to client’s actual needs.
Characteristic of Underground Sewage Treatment Plant:
(1) It is underground type, no shelter is needed and the earth surface can be covered with plants.
(2) Effect of plug flow secondary biological contact oxidation treating method is better than mixed or series connected type. It boasts smaller occupation compared with active sludge tank, strong acclimatization of water, good impact resistance load capacity, stable water quality and non-expansion of sludge. New vertical pack with big surface area tends to bio film formation and detachment of microorganism, thus under same organic load, it enjoys greater removal of organics and water solubility of oxygen.
(3) With biological contact oxidation method, biochemical pool takes less pack and self oxidization of microorganism induces less sludge, which can be discharged every three months (90 days) (sucked by garbage truck or moved in mud after dewatering ).
(4) Regular high altitude odor exhausting type, with sludge oil deodorization measurement.
(5) Auto electric control and fault warning system ensures safe and reliable operation without special staff. Maintain occasionally.
Usage of Underground Sewage Treatment Plant:
(1) Capable of treating organic sewage
(2) Anti-corrosion carbon steel, stainless steel and FRP structure ensures 50-year life time；
(3) Simple installation and easy operation, the whole set can be placed underground with auto-control
Application of Underground Sewage Treatment Plant
Hotels, restaurants, sanitariums, hospitals
Home communities, villages and towns
Stations, airports, harbors
Factories, mines, troops, scenic spots
Industrial organic sewage similar to municipal sewage
Domestic Waste Water Treatment Plant
