Statistically significant increases in woodchip P content over time in woodchip bags placed near the bioreactor outlets (0.03 vs 0.10%P2O5) and along the bioreactor floor (0.04 vs. 0.12%P2O5) confirmed wastewater solids were being removed and may pose a concern for subsequent nutrient mineralization and release.
The efficiency of sedimentation tanks depends on the following factors: detention period, wastewater characteristics, tank depth, floor surface area and overflow rate, operation, temperature, particle size, and inlet and outlet design.
Contamination of the PVS ocean floor was due to many decades of discharge of wastewater by the Los Angeles County Sanitation District and disposal of wastewater containing DDT by the Montrose Chemical Company, once the largest DDT manufacturer in North America, from 1950s to 1970s.
This paper describes biotreatability tests for treating a wastewater stream generated by wood-floor industries after cleaning and washing of machinery used to apply urea formaldehyde resins onto wood-fiber boards.
The floors are slick with water and blood, and a fast-moving wastewater canal, which workers call "the river," runs through the plant.
Washing of milling house floor, various division of boiling house like evaporators, clarifiers, vacuum pans, centrifugation, etc., generates huge volume of wastewater.
The museum tells the story of Shanghai's evolution with a spectacular collection of archival photos, meaningless but beautiful exhibitions on wastewater management and other public works, and a scale model of Shanghai circa 2020 that spanned an entire floor.
It is, nevertheless, wastewater.
See wastewater treatment.
Some people called him Mr. Wastewater Treatment.
