Biological activated carbon (BAC) was used for removal of microcystins (MC) from drinking water. At HRT of 1.5 h, the removal rate of COD_(Mn) and UV_(254) was 55.3% and 35.1% respectively, and removal rate of MC-RR, MC-YR, and MC-LR was 60.57%, 63.30%, and 68.79% respectively.
In a water treatment plant, ozone/biological activated carbon (O_3/BAC) advanced treatment system was used, and the constituent, working condition, and equipment and technical parameter of the system were introduced.
The removal efficiency of organic compounds, ammonia nitrogen, nitrite nitrogen, chromatically color material, turbidity and phosphorus, manganese etc in the source water from the Yellow River is studied with Ozone Biological Active Carbon in the water supply treatment process in the paper.
It shows that not only some organic compounds and ammonia nitrogen are removed, but also biodegradability of organic compounds in the water is improved and bioactivity of biological active carbon is enhanced and removal efficiency is advanced in the later process with ozonation treatment.
By comparing and discussing the results of dye wastewater treatment by submerged membrane bio-activated carbon reactor(SMBACR) and SBR, it is found that membrae bio-reactor(MBR) has better effect than SBR for the same wastewater influent.
Guoyuanqiao Waterworks in Tongxiang City, Zhejiang Province was constructed on conventional water purification process with capacity of 80 000 m 3/d. With the increasing water pollution, biological pre-treatment of raw water and advanced purification of ozone and bio-activated carbon processes were added to guarantee the output water to meet the national standard of drinking water.
The index of permangante was tested continuously. The result of the test was that the bio-activated carbon had the characteristic of high removal rate and stabilizaiton,and whose average removal rate of the index of permanganate was 40%,with the index of permanganate <2 5 mg/L,turbidity<1 0 NTU,the amount of bacteria<100(cfu/mL);
The results of the experiment show that the bio-activated carbon of engineering-bacteria artificial immobilization have the characteristic of high and stable removal rate for the organism in the slightly polluted water.
The muddiness and discoloring of the water is im- proved. It testifies that under different dosage of O 3 , the different purity levels of the drinking water handled by O 3 alone vs. O 3 with biologically active carbon(O 3 -BAC). The economical O 3 dosage of 4 mg/L is concluded.
Nitrification and denitrification in biological activated carbon filter for treating high ammonia source water
A digester methanogenic consortium was shown to dechlorinate chloroform (CF) and carbon tetrachloride (CT) to dichloromethane (DCM), and DCM was then mineralized by an acclimated denitrifying biological activated carbon consortium.
Treatment of H2S using a horizontal biotrickling filter based on biological activated carbon: reactor setup and performance eval
A self-designed, bench-scale, cross-flow horizontal biotrickling filter (HBF) operated with bacteria immobilized activated carbon (termed biological activated carbon-BAC), was applied for the treatment of H2S.
Investigation on the mechanism of H2S removal by biological activated carbon in a horizontal biotrickling filter