欧美超碰在线观看-se69色成人网wwwsex-亚洲国产精品久久久久久-国产高潮好爽受不了了夜夜做-天天色影综合网-丰满多毛少妇做爰视频-亚洲熟妇无码久久精品-一区二区精-成人h动漫精品一区二区-91免费黄-在线亚洲精品国产二区图片欧美-五月婷综合-国产ts系列-中文字幕欧美日韩va免费视频-亚洲图片校园另激情类小说

Buried sewage treatment equipment.

Buried sewage treatment equipment, sewage disposal plant is a modular, is a kind of biological treatment system of sewage purification bodies in biofilm, give full play to the anaerobic biological filter and contact oxidation bed biofilm reactor has the biological density, anti pollution ability, low power consumption, operation stable operation, easy maintenance, the system has a wide application prospect and popularization value. Buried sewage treatment equipment using biological treatment technology in the world's leading BOD5, COD, NH3-N removal in a body, is currently the most efficient sewage treatment equipment. The treated effluent meets the national discharge standard. The equipment is made of carbon steel anti-corrosion structure or glass fiber reinforced plastic composite material, the service life of more than 20 years, the top can be through the vehicle, but also can be green.