Home
Resources
Publications
A Bench-Scale Rock-Plant Filter Investigation

A Bench-Scale Rock-Plant Filter Investigation

D Skipper, M Tittlebaum

Environ Monit Assess. 1993 Aug;27(1):69-80.

PMID: 24220930

Abstract:

Three bench-scale rock filters containing 0.6 m of gravel were used in this investigation. Two of the filters were planted withSagittaria Iancifolia andScirpus validus, while the third filter was an unvegetated control filter. The wastewater directed through these systems was a synthetic mixture containing nutrient broth as the carbon source. An 80-day experiment was run on the filters using eight combinations of two flow rates and four influent biochemical oxygen demand (BOD5) concentrations, each combination remaining constant for ten days. These combinations resulted in BOD5 surface loadings from 4.63-30.96 g/day/m(2). From other studies of batch and continuous flow rock-plant filter systems, the first-order BOD5 reaction rate constant was found to decrease exponentially with detention time. In this study, however, little correlation was found between BOD5 loading rate and removal percentages, which averaged 69%, 57%, and 47% for theScirpus, Sagittaria, and control systems, respectively. This is probably due to the relatively small change in detention times studied and the short time period of each loading rate. Oxidation/reduction potential (ORP) and dissolved oxygen (DO) measurements within these systems indicated that no free oxygen was available at any depth. Total Kjeldahl nitrogen (TKN) removal was higher in the plant systems relative to the control, with theScirpus system achieving a higher overall removal than theSagittaria system.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
IAR42199	Kjeldahl Nitrogen, Total (TKN) - WS			Price

As a specialist in analytical chemical Products, Alfa Chemistry offers consumers a wealth of raw materials and a full range of technologies and services.

QUICK LINKS

HEADQUARTERS

Tel:

Fax:

Email: