Brown and Caldwell Home Page
Technical Papers RECENT PAPERS    ALL PAPERS

Brown and Caldwell engineers and scientists are technical and thought leaders in the environmental sector. Meet the people who have been advancing innovation for more than 70 years.
Author      Title/Abstract      


Trickling Filter/Solids Contact Performance with Rock Filters at High Organic Loadings
Author: Raymond N. Matasci, David L. Clark, James A. Heidman, Denny S. Parker, Brian Petrick, Darrel Richards
Date: 1/188
Reprinted from the Journal Water Pollution Control Federation,Vol.60, No.1, January 1988

The performance of the trickling filter/solids contact (TF/SC) process at high organic loadings was studied at the Morro Bay-Cayucos treatment plant. The average secondary effluent TSS increased only slightly (from 13 mg/L to 15 mg/L) when the filter BOD5 loading• was doubled from 480 g/m3 •day (30 ppd/ I 000 cu ft) to 960 gjm3 •days (60 ppd/ I 000 cu ft). The rock trickling filter operated without noticeableodors at the higher loading, although Beggiatoa presence indicated the filter was stressed. When the Morro Bay-Cayucos secondary process operated in the trickling filter mode at the lower filter loading, average secondary effluent TSS was 28 mg/L. Work at the Coeur d'Alene, Idaho, trickling filter plant showed that average secondary effluent TSS decreasedfrom 25 mg/L to 16 mg/L when the old shallow secondary clarifier wasreplaced with a new flocculator-clarifier. J. Water PoilU/. Contro/60, 68 (1988).

This library contains published materials for which copyrights may be owned by entities other than Brown and Caldwell, but which are stored for limited uses by BC employees. Technical papers authored by BC employees generally may be printed and shared electronically with clients and prospective clients outside BC. Technical papers cannot be sold, and technical papers shared outside BC must have proper attribution of the original sponsoring organization or conference where the paper was presented. This attribution is embedded in each technical paper file when it is loaded into this library. Published articles from magazines or trade journals which are stored in this library are FOR INTERNAL USE ONLY and SHOULD NOT be distributed to clients or others outside BC, without express permission of the copyright owner. For questions regarding copyrights associated with any document in this library, or questions regarding copyrights in general, contact the Legal Department.