最近日本中文字幕中文翻译歌词|一本色道久久88|亚洲国产伦理|无码精品人妻一区二区三区影院|日韩一级片一区二区|人妻丰满熟妇aⅴ无码|欧美国产精品久久久久久免费|久久久久性

Water features:

Food industry wastewater is mainly from raw material cleaning(mainly includes massive suspension),producting(mainly includes massive organic matters),and forming units (mainly includes various food additives).Water quality and quantity fluctuate greatly due to various raw material and production.Its main pollutants include:solid matters floating on wastewater,such as vegetable leaf,peel,frittered meat,etc;fat,protein,starch and colloid material aerosolling in wastewater;acid,alkali,salt and carbohydrate dissolved in wastewater;mire,sand and other organic matters entrained in raw material;pathogenic bacteria .etc.Food industry wastewater’s organic and suspended matters content is high.It generally is perishable and non-toxic.

We can use liquid-solid separation to eliminate the suspended matters,and use biological treatment technology to eliminate COD and BOD.And effluent must discharge after disinfection process.We summarized a set of comprehensively,highly effective and economical process through practice:“Air flotation+Hydrolisis acidification pond+Active sludge process”.The process has following advantages:few invest,good processing effect,stable operation .etc.Effluent achieves the following standard, COD_cr≤50mg/l,BOD₅≤10mg/l,SS≤20mg/l,NH₃-N≤5mg/l.