1901 Merck's Rep. Oct. 318/1 Jos. Winklhöfer..has used the automatic filter-feed here illustrated, and states that for several months it has afforded him better results than other apparatus intended for a similar purpose.

1954 Water & Sanitary Engineer 4 314/1 The flow through the works can be divided into two parts at the filter feeds.

2015 B. A. Perlmutter Solid-Liquid Filtration v. 68 The piping to the filter feed, for example, can also impact the filtration operation.

1914 Mining & Sci. Press 10 Oct. 555/1 The filter feed is an impervious slime containing no granular material.

1938 Sewage Wks. Jrnl. 10 956 With gravity flow, the filter feed can be controlled by weir or float settings at the conditioning tanks.

1964 G. H. Jenkins tr. E. Hugot Handbk. Cane Sugar Engin. xxx. 341 For the cloudy filtrate, the first idea which comes to mind is to send it purely and simply to the filter tank or to the mud tank preceding it. However, this dilutes the filter feed, and is not to be recommended.

2012 M. K. Eraydin et al. in C. Young & G. H. Luttrell Separation Technol. 106/2 The solids content of the filter feed was 12.3 percent.

1953 Brit. Jrnl. Animal Behaviour 1 88/1 At any one time some animals filter-feed while others do not, and a worm may filter-feed once only or it may continue for several hours.

1968 Limnol. & Oceanogr. 13 396/2 Copepods and cladocerans..in turn filter feed on algae.

1980 J. T. Bonner Evol. Culture in Animals iv. 74 If the organism is going to filter feed in an area where there is a current..it would be a total waste of energy to rush about, for the current will automatically bring the food to the animal.

2011 R. Fortey Survivors vii. 202 The larva..is a little pale wisp of a thing that lives in river mud for about four years and filter feeds.