Trickling filter

About: Trickling filter is a research topic. Over the lifetime, 1098 publications have been published within this topic receiving 20219 citations.

Tratamento anaeróbio e aeróbio de lixiviado de aterro sanitário

Abstract: Landfill leachate can be considered a liquid waste holder of high concentration of ammonia nitrogen, recalcitrant organic matter and, according to the chemical composition of solid waste landfill and the age of the earth, significant concentrations of heavy metals. Such characteristics require sophisticated alternative technologies for the treatment of leachate due to its imbalance between the nutrient and the possible generation of potential toxic products in case of biological process, or other byproducts in case of physical and chemical processes. Conjugated treatment of landfill leachate and sewage is emerging as a promising technological alternative, however, it also recognizes the necessity of operating parameter settings, especially regarding the application of this type of treatment in real scale. In this context, this study worked with the conjugated treatment of landfill leachate and domestic sewage in UASB reactor, followed by biological trickling filter, applying volumetric organic loads of 1.0 kgBOD5 / m3.dia (step 1), 1.2 kgBOD5 / m3.dia (step 2) and 1.5 kgBOD5 / m3.dia (step 3) and HRT of 7.5, 5.0 and 18.0 hours, respectively. The efficiency of total COD removal in the two reactors were 85%, 57% and 89% for steps 1, 2 and 3, respectively. It also presented satisfactory removal of N-NH4 +, producing, in step 2, an effluent with average concentration of 17 mg N-NH4 +.L-1. This result meets the discharge standards into water bodies, once that the maximum value allowed is 20 mg N-NH4 +.L-1. Key words: wastewater; combined treatment; UASB reactor; percolator biological filter.

Performance Evaluation of Trickling Filter and Extended Aeration of Wastewater Treatment Plants

Abstract: In recent decades, there has been increasing interest in wastewater treatment because of its direct impact on the environment and public health. Over time, other forms of treatment have been developed and modified, including extended aeration. This process is included in the suspended growth system. In this paper, a comparative study was conducted between the efficiency of the extended aeration plant and that of the trickling filter plant in removal of BOD and COD. The method of comparison was done by knowing the value of the pollutant before and after the treatment and then extract the removal ratio of each pollutant within each plant. The results showed that the percentage of removal of BOD in the trickling filter was 79.5% while in extended aeration was 90.7%. The efficiency of COD removal was 60% in trickling filter and 86% in extended aeration. The study was carried out at the Barrakiyah WWTP in Najaf province in Iraq. As the plant contains these two types of treatment, and the study has been achieved through monthly examinations over a full year.

Plant of sewage water deep advanced treatment

Abstract: sewage water treatment. SUBSTANCE: plant may be used for deep advanced treatment of biologically cleaned sewage water prior to discharging it into reservoir or when using it in closed systems of industrial and agricultural water supply, as well as when building of swimming pools and during preparation of drinking water. Sewage water treatment plant includes ozonizer, flotator, reagent dosator, high-rate trickling filter, washing pump, settling tank, reservoir-accumulator, microfilter, booster pump, ejector, bactericidal installation, saturator, hydromonitor with circular supply system, electrified gate valves, position pickups of electrified gate valves, water level gauge in high-rate trickling filter, pressure pickups and control unit with corresponding couplings. EFFECT: higher efficiency. 2 cl, 3 dwg

Optimal design of wastewater treatment plant using adaptive simulated annealing

Abstract: This paper deals with the application of Adaptive Simulated Annealing (ASA) for the optimal design of the wastewater treatment plant. The plant consists of a trickling filter, an activated sludge aeration vessel and a secondary clarifier. In this work a successful attempt has been made to use the ASA for optimal design of wastewater treatment plant. ASA based optimal design values have been compared with conventional optimization approaches and has been found to yield the lowest total construction cost of wastewater treatment plant. From this work, it has been found that artificial intelligence based optimization techniques such as adaptive simulated annealing is found to be suitable for the optimal design of wastewater treatment plant. Journal of Applied Sciences and Environmental Management Vol. 9(1) 2005: 107-113

Study on Denitrification and Phosphorus Removal Using an Integrated A/O Trickling Filter

Abstract: Two columns were experimented to compare trickling filter with integrated A/O trickling filter (IA/OTT) in this study. Denitrification and phosphorus removal were limited in traditional trickling filter. By designing anoxic section, adding carbon source and recycling outflow, denitrification was enhanced in IA/OTT. Meanwhile, chemical-biological methods were used to improve the phosphorus removal. It was shown that removal efficiency of CODcr, NH3-N, TN and TP were ideal. Compared with the traditional trickling filter, especially, the removal efficiency of TN and TP were respectively about 35% and 50% higher.