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The ideal medium should have the following properties: high specific surface area, high void space, light weight, Range of hydraulic and organic loading rates for trickling filters are shown in table 1. [C] Relative temperature of . h2o.ehnr.state.nc.us/tacu/documents/trickling_filter.pdf. [4]. Davis, M. L., Cornwell, D. A.
41NTS O O C O O O ' O O Q Q O O O O O O O O l. S O O O O O O O O O I D O O O O O O O f. I Q O O O~ O O i O O O O O O O O O O. O I O ' C I O D O O O O U I Q l Q Q. DIRECT RECIRCULATION OF HIGH-RATE TRICKLING FILTER. O O O I O O - O O O 0 O O 9 D O I o ' 0 0 a o 0 0 .0 0 0 o. BIS-CIRCULATION SYSTEM . l.
Standard-Rate Filters. 1. Design Loading. 2. Media. 3. Effluent Quality. 4. Recirculation Capabilities. 5. Seasonal Sloughing. 6. Problems. B. High-Rate Filters. 1. Design Loading . Identify the three classifications of trickling filters based on hydraulic and organic loading rates. •. Calculate copi_01-20.pdf, June 21, 2004.
dissolved organic solids on which the micro-organisms feed and eventually degrade by biological oxidation. For secondary applications the biofilm thickness is around Imm, whereas in high rate filters up to 5 mm film thickness can be found. The biomass growth within a tertiary nitrification filter, where the influent has low
blending of the filter and secondary effluent, the system should recirculate the trickling filter effluent. The biological solids that slough from an intermediate trickling filter are not as well digested as those using a low-rate filter. High-rate filters. High-rate filters are generally loaded at the maximum organic loading capabilities of
trickling filter r theory r microbiology r ecology r design r case studies r low-rate trickling filter r high-rate trickling filter r. Accelo-filter r roughing filter . The development of plastic packings as high-rate trickling filter media has been one of the Virginia www.nswplastics.com/environmental/pdfs/sessil_flyer.pdf. 46.
A modern trickling filter consists of a bed of highly permeable media to which micro-organism are attached and sewage percolates or trickle down and hence the name “Trickling Filter". The filter media consists of rocks varying in size from 25-100mm. The depth of rock varies from 0.9-2.5m averaging. 1.8m. A rotating arm
Tricking filter(TF) Pretreatment Required: • Primary Sedimentation. Classification of Trickling Filters: • Trickling filters are classified as standard or low rate, and high-rate filters according to hydraulic and organic loading rates. • Two-stage operation, the placing of two filters inseries, is used for high organic loads. 11. Design
Table 10.5. Typical Design Criteria for Trickling Filters. Item. Low-rate filter. High-rate filter. Super-rate filter. Hydraulic loading (m3/m2-d). 1 - 4. 10 - 40. 40 - 200. Organic loading (kg BOD5/m3-d). 0.08 - 0.32. 0.32 - 1.0. 0.8 - 6.0. Depth (m). 1.5 - 3.0. 1.0 - 2.0. 4.5 - 12.0. Recirculation ratio. 0. 1 - 3. 1 - 4. Filter media. Rock, slag
3. 5. Trickling Filter. 6. Classifications of Trickling Filters. ?Trickling filters are classified into: - Low-rate or standard-rate. - Intermediate-rate. - High-rate. - Super-rate. ?Classification is according to: - Organic loading. - Unit liquid loading. - Recycle employed
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