KCH designs and manufactures a Biotrickling Filter System to remove high levels of hydrogen sulfide (H2S) gas and other odors from municipal and industrial. KCH Engineered Systems designs and manufactures a Biotrickling Filter System to remove high levels of hydrogen sulfide (H2S) gas and other. A biotrickling filter is a combination of a biofilter and a bioscrubber. The process of biotrickling filtration is, as is also the case with biofilters and bioscrubbers.

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Common uses of a biofilter include processing biotricklign water, capturing harmful chemicals or silt from surface runoff, and microbiotic oxidation of contaminants in air. The good removal in dealing with these abrupt changes in inlet H 2 S concentration after resuming normal operation suggests that the bioreactor had a strong ability to resist shock loads when it was supplied continuously with H 2 S of variable inlet concentration.

It is important to investigate the performances of biotrickling filter in the absence of pollutant feed and during the time when shock loads take place.

In the biotrickling filter, the packing may become blocked due to strong growth in the biofilm. The bioreactor achieved a steady state and the removal efficiency of H 2 S kept constant after 15 d.

The biotrickling filters could obtain high removal efficiency within 4 d of re-acclimation. Inlet H 2 S concentration was kept at a relatively high value at the re-acclimation process without ramping up. The Biotrickling Filter System can include additional components needed to provide a complete functioning system, such as: Cox and Deshusses designed two identical biotrickling filters, one operated at pH 4. There was one port in each section of the biotrickling filter for carrier sampling and gas pressure measurement.

Changes of biomass during the starvation As shown in Fig. Inorganic Media Guaranteed for 10 Years. We are a market diversified business with both in house manufacturing and engineering. Biotrickling filter, Starvation, Shock loads, Odor, Hydrogen sulfide. Biofiltration is a pollution control technique using a bioreactor containing living material to capture and biologically degrade pollutants.


The biotrickling filters of experiments 1 and 4 were starved without trickling liquid.

Owing to the variable industrial schedules, pilot-scale or full-scale biotrickling filters are usually exposed to many perturbations as a result of fluctuation or discontinuous shock loads. The standard KCH Biotrickling Filter System incorporates an integral sump box and pump circulation system built into the vessel. Treatment of odor containing hydrogen sulfide released in the wastewater of pharmaceutical company by high efficient bioreactor with the packed stuffing.

During the subsequent re-acclimation, all the bioreactors could resume high removal efficiencies within 4 d regardless of the previous starvation conditions. At the same time, starvation was a useful factor to avoid the clogging of the bioreactor, which could reduce the biomass of the bioreactor in a way. The packed carriers in each section were supported by plexiglass sieve plates. Biotrickling filters are used for applications in which there is no space for a biofilter, where the efficiency of a biofilter is not sufficient, or in the presence of ph-relevant compounds.

Peat biofilters in long-term experiments for removing odorous sulphur compounds. The discharged sludge must be carried away.

Biotrickling Filters | KCH Services Inc.

Transient-state biodegradation behavior of a horizontal biotrickling filter in co-treating gaseous H 2 S and NH 3. The comparison between experiments 3 and 4 further demonstrates that spray liquid with nutrient solution could keep the activity of microorganism.

Transient response of biotrickling filter to fluctuating H 2 S after re-acclimation. The biomass decreased slowest in experiment 1, filyer fastest in experiment 4.

There were two possible reasons for the decrease of removal efficiency at this higher inlet concentration. This will lead to prefered flows, which will in-turn reduce efficiency and increase pressure drop.

Biofilters and Biotrickling filters | SOS Hygiene

Hydrogen sulfide removal by a novel fixed-film bioscrubber system. B are provided here courtesy of Zhejiang University Press. Microorganism would die gradually under the aerobic and nutrient solution absence conditions. In order to feed the biomass, the required nutrients are added to the water. Support Center Support Center. The study suggests that the biotrickling filters were capable of withstanding different conditions of starvation with rapid recovery to high removal efficiency when starvation ceases.


As shown in Fig. Furthermore, an important implication of these starvation experiments was that significant energy can be biotriclling by shutting the blower and the water pump off during industrial operation, which would not lead to notable adverse effects. In order to further study the acclimatization of the bioreactor to shock loads, the bioreactor was supplied with H 2 S of variable concentration after resuming normal operation.

KCH designs ffilter manufactures a Biotrickling Filter System to remove high levels of hydrogen sulfide H 2 S gas and other odors from municipal and industrial processes. Hydrogen sulfide biotriciling and oxidation onto activated carbon cloths: Journal of Hazardous Materials. Starvation experiment H 2 S supply Air supply Spray liquid with nutrient solution Possible conditions 1 off off off Equipment repair or equipment malfunction 2 off off on Blower breakdown 3 off on on Weekend or holiday with water supply and air kept on 4 off on off Water pump malfunction.

Biotrickling filter

Maximum Resistance to UV Exposure. Plate count Samples were taken at same depth 35 cm from the biotrickling filters described above. The momentary response of the bioreactor to these abrupt changes in inlet concentration is presented in Fig. Odor mainly composed of hydrogen sulfide H 2 S from the pharmaceutical wastewater treatment plant is one of the major public perception nuisance problems in the pharmaceutical industry.

The fact that full activity of sulfur-oxidizing bacteria was recovered suggests that re-acclimation did not require the buildup of significant amounts of new degrading biomass.

For the removal biogrickling H 2 S, one can acidify the biotrickling filter to a pH of 1 — 2without negatively effecting removal efficiency. It should also be noted that a decrease in the biomass was not vital at relatively high biomass concentration.

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