Reactor digestion method was used for the determination of chemical oxygen demand (COD) , while biological oxygen demand
(BOD) was measured by standard BOD 5 method .
Key words: Phycoremediation biological oxygen demand
chemical oxygen demand total suspended solids and total dissolve solids.
He suggested that dissolved air flotation (DAF) clarification technology can act as a "kidney" for the mill to reduce dissolved and colloidal solids, including metals, pitch, stickies, and the associated chemical oxygen demand and biological oxygen demand
Says Hailu, "The industry, between 1959 and 1994, has been reducing its biological oxygen demand
and total suspended solid outputs at average annual rates of 3.
Floating aerators satisfy the biological oxygen demand
by mixing oxygen from the air into pond water.
They are effective in treating high biological oxygen demand
wastewater, but not so well equipped to treat high chemical oxygen demand levels.
A standard aeration process to reduce biological oxygen demand
(BOD) and chemical oxygen demand (COD) is used.
Today, wastewater at Stennis is treated using natural biological systems, which inexpensively but effectively reduce VOCs, biological oxygen demand
(BOD), and the fecal coliform (related to colon bacillus) count.
Traditional effluent descriptions in Canada have related to toxicity to fish; total suspended solids (TSS) -- concerned with the build up of wood fibers and residues in receiving water; and biological oxygen demand
(BOD)-- the release of oxygen-depleting substances which can kill or seriously interfere with fish and other aquatic life forms.
To decrease biological oxygen demand
(BOD), dissolved organics and odors, Linde offers the SOLVOX([R])process, which offers an effective supplement or replacement to forced air systems.
Tenders are invited for supply, installation and commissioning of biological oxygen demand
According to Ravinder Kaur, project director at IARI, the mechanism cleans the waste water by 99 per cent, biological oxygen demand
( BOD) by 87 per cent, nitrates by 95 per cent, sulphates by 90 per cent and heavy metals like iron by 99 per cent, chromium by 85 per cent and lead by about 81 per cent.
It reduces chemical oxygen demand, biological oxygen demand
, suspended solids, fats, oil and grease in wastewater by up to 95 percent.
Techniques represented included dissolved oxygen (DO) meters, biological oxygen demand
and chemical oxygen demand analyzers, nutrient analyzers (nitrates, nitrites and ammonia), total organic carbon analyzers (TOC), pH and ion selective meters, and electrodes, conductivity and resistivity reters, as well as assorted portable and fixed gas analyzers devoted to worker safety.