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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The supply of H 2 S was stopped in the biotrickling filters during the starvation experiments.

In order to keep salt concentrations within acceptable limits, one section must be discharged and filled with fresh water. The removal of malodorous H 2 S has been traditionally accomplished by using physical or chemical technologies, such as vapor scrubbing, incineration, or adsorption Bouzaza et al.

If multiple odor compounds need to be removed, Biotrickling Filters can be combined with other KCH technologies, such as Carbon Adsorbersto create a multi-stage solution for Odor Control. For the removal of H 2 S, one can acidify the biotrickling filter to a pH of iflter — 2without negatively effecting removal efficiency. The biomass decreased slowest in experiment 1, but fastest in experiment 4. When storage is low, anaerobic circumstances may arise and cause odour.

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The results of the experiment 4 indicate that ibotrickling endogenous respiration was an important factor to the overall loss of bacterial viability. KCH Biotricklers can also be designed for a rectangular low-profile configuration, utilizing a structured high-density media. Long-term operation may result in excess biomass formation when nutrient loads and pollutant concentrations are high. It should also be noted that a decrease in the biomass was not vital at relatively high biomass concentration.


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. Journal of Colloid and Interface Science. Effects of periods of starvation and fluctuating hydrogen sulfide concentration on biofilter dynamics and performance.

This will allow alkaline usage to be limited. On bootrickling one hand, the experiments were carried out under the high liquid trickling velocity with 5 L of the nutrient solution, once 1 h in order to avoid the clogging of the bioreactor, which could limit the increase of biomass and further resulted in the decrease of removal capacity in the bioreactor.

There were two possible reasons for the decrease of removal efficiency at this higher inlet concentration. Transient-state biodegradation behavior of a horizontal filyer filter in co-treating gaseous H 2 S and NH 3. Contact us today, for one of our design engineers biotruckling evaluate your application and determine the optimum design parameters for your installation.

Biotrickling filters are used for applications in which there is no space for a biofilter, where biotricklng efficiency of a biofilter is not sufficient, or in the presence of ph-relevant compounds. VAT Case study 3: Biotrickling Filters use a synthetic media fillter support the growth of natural occurring micro-organisms to convert H2S into a dilute acid solution, part of which is tilter via a continuous water make-up or overflow.

The standard KCH Biotrickling Filter System incorporates an integral sump box and pump circulation system built into the vessel. The H 2 S outlet concentration in steady state was maintained below 1.

This will help to spare the biotrickling filter. Inorganic Media Guaranteed for 10 Years. The polluted components absorb in the liquid film and are decomposed by the bacteria. It is important to pass odour-laden gases from the storage place through the biotrickling filter or another air purification device. Four biotrickling filters were operated similarly throughout the entire experiment, except for the starvation phase.


On the other hand, the biotrickling filters can protect against shock loads in inlet fluctuating H 2 Biotrlckling concentration after resuming normal operation.

Owing to the similarity of the biomass in four bioreactors, only one of the biotrickling filters was evaluated prior to the shock loads. Hydrogen sulfide adsorption and oxidation onto activated carbon cloths: Removal of ternary VOCs in air streams at high loads using a compost-based biofilter. Re-acclimation experiments were conducted to investigate the response of these previously acclimated biotrickling filters to starvation periods and evaluate whether the biotrickling filter can recover rapidly and meet the demand of industrial application.

Applied Microbiology and Biotechnology. This article has been cited by other articles in PMC.

Biofilters and Biotrickling filters | SOS Hygiene

biotricckling Author information Article notes Copyright and License information Disclaimer. The packed carriers in each section were supported by plexiglass sieve plates. The biotrickling filters with an inner diameter of mm and a height of mm were made of transparent plexiglass tubing. The discharged sludge must be carried away.

The carrier material is constantly covered with water. Common uses of a biofilter include processing waste water, capturing harmful chemicals or silt from surface runoff, and microbiotic oxidation of contaminants in air.