Pretreatment and Primary Treatment

The major operations, equipment, and chemicals used for pretreatment and primary treatment are listed in Table 6. From Figure 2 and Table 6, it can be seen that a sludge stream from primary settler enters a series of sludge processes elaborated in later sections. In general, settled grits discharged from the grit chamber are not defined as sludge in the literature. They are usually transported directly to final landfill sites.

In a gravity sedimentation process, organic solids generally will not compact to more than 5-10%, while inorganic solids compact to 20% or 30%. Approximately 50-60% of the raw sewage suspended solids, and as much as 30-35% of the raw sewage BOD may be removed in the primary tank.

Oplan Termites

Oplan Termites

You Might Start Missing Your Termites After Kickin'em Out. After All, They Have Been Your Roommates For Quite A While. Enraged With How The Termites Have Eaten Up Your Antique Furniture? Can't Wait To Have Them Exterminated Completely From The Face Of The Earth? Fret Not. We Will Tell You How To Get Rid Of Them From Your House At Least. If Not From The Face The Earth.

Get My Free Ebook


Post a comment