Topic
Trickling filter
About: Trickling filter is a research topic. Over the lifetime, 1098 publications have been published within this topic receiving 20219 citations.
Papers published on a yearly basis
Papers
More filters
Journal Article•
TL;DR: In this paper, the results of experiments with divers types of eaux usees industrielles were presented. But the results were only avec divers types d'eaux.
Abstract: Resultats d'essais menes avec divers types d'eaux usees industrielles. Controle du pH, DCO, particule en suspension, biogaz
7 citations
TL;DR: Hydrodynamic modelling indicated that the model of stirred tanks in series with exchanged zones fitted the experimental results well and gave values of mobile and immobile volumes in the glass beads filter and 25 mL and 15 mL, respectively, in the plastic rings filter.
Abstract: In trickling filters for wastewater treatment, hydrodynamic behaviour is affected by the growth of biofilm on the porous medium. Therefore, modelling hydrodynamic behaviour is necessary and efficient to predict the biodegradation of pollutants. In this study, laboratory-scale trickling filters were filled with two different porous media (glass beads and plastic rings) and were fed by a synthetic substrate in batch mode. Total organic carbon (TOC) of the effluent was measured and retention time distribution (RTD) was determined by injecting NaCl. Results showed that medium had no significant effect on TOC removal rate (around 80% and 60% respectively for batch time of seven and two days). However, regarding the hydrodynamic behaviour, the effective volume ratio and hydraulic efficiency in the glass beads bed increased remarkably from 28% and 18% to 80% and 70%, respectively, with the reduction of dispersion coefficient (from 4.55 to 1.53). Moreover, the short batch time accelerated this change. Conversely,...
7 citations
TL;DR: In this paper, the authors examined the treatability of highly polluted wastewater from a dairy factory prior to its final disposal into the public sewerage system and concluded that the quality of the waste produced does not meet with the National Regulatory Standards for wastewater disposal into a sewerage network.
Abstract: Examines the treatability of highly polluted wastewater from a dairy factory prior to its final disposal into the public sewerage system. Physical treatment of the dairy waste via aeration, followed by settling, resulted in a 25 per cent chemical oxygen demand (COD) reduction and elimination of odours. Chemical treatment achieved almost 50 per cent removal of COD. The chemical‐biological process using activated sludge/trickling filter resulted in 64 per cent and 90 per cent removal of the volatile organic matter value respectively. However, the quality of the waste produced does not meet with the National Regulatory Standards for wastewater disposal into the sewerage system. Chemical‐biological treatment using an upflow anaerobic reactor succeeded in reducing the pollutional parameters to coincide with the limits of the Egyptian Law 93/1962 and produces biogas as a source of energy at a rate of 0.39m3/kg COD removed.
6 citations
01 Jan 2002
TL;DR: In this article, the process characteristics of a pilot-scale trickling filter system were quantified by means of a measurement campaign with the use of off-gas analysis, and a load shift experiment was conducted in which the influent load to the traning filter system was suddenly decreased.
Abstract: The process characteristics of a pilot-scale trickling filter system were quantified by means of a measurement campaign with the use of off-gas analysis. A load shift experiment was conducted in which the influent load to the trickling filter system was suddenly decreased. To model the biodegradation in the filters, the model developed by Rauch et al. (1999) was used. This model was extended with equations for the production and the pH-dependent liquid phase equilibrium for inorganic carbon (IC).
6 citations
Patent•
27 Feb 2013
TL;DR: In this paper, a combined biological filter device for domestic sewage treatment is presented, which is composed of a high water distribution tank and a biological trickling filter, a surface layer is an infiltration system, a lower layer is a biological filter, and an ecological type sewage treatment system using microorganisms, plants, animals, stuffing and the like as major elements.
Abstract: The utility model belongs to the technical field of water treatment and particularly relates to a combined biological filter device for domestic sewage treatment. A combined biological filter serves as a main body of the process, a system is composed of a high water distribution tank and a biological trickling filter, a surface layer of the trickling filter is an infiltration system, a lower layer of the trickling filter is a biological filter, and an ecological type sewage treatment system using microorganisms, plants, animals, stuffing and the like as major elements is built by grading biological stuffing with different particle sizes. The biological stuffing such as biological ceramsite and non-woven fabrics which serve as carriers for microorganism growth and attachment are added into the high water distribution tank of the combined biological filter. By the aid of a high water distribution anaerobic filter, the space of the sewage treatment system is fully used, an anaerobic or oxygen-deficient environment is formed, biological nitrogen removal efficiency is improved, and COD (chemical oxygen demand) removal rate is increased; a combined biological filter body can be prefabricated by glass reinforced plastics and mounted on site, so that construction speed is increased greatly, equalization of sewage treatment facilities is achieved, and industrial production is benefited; and the system can be composed of the high distribution tank and a one-stage or multistage biological trickling filter according to requirements on effluent effects.
6 citations