A method for precisely controlling the addition of filter aid chemicals to water treated in a high-rate filter apparatus, wherein turbidity measurements are simultaneously made of the water at an intermediate point in the filter bed and of the final filter effluent. The relationship of the turbidity measurements is used to constantly regulate the optimum addition of filter aid chemicals.

A method of administering less than 20 .mu.l of a solution of an ophthalmically effective substance to the eye characterized in that the formulation has a viscosity and resistivity which makes it suitable for electrodynamic spraying, and the formulation is supplied to a spray nozzle wherein a sufficiently large electrical potential, relative to earth, is applied to the formulation that a sufficient electrical gradient is provided at the spray nozzle to atomize the formulation as a spray of elect...

Method and formulation useful in treatment of glaucoma in a mammal wherein an effective amount of an active water soluble carbonic anhydrase inhibitor is administered, said inhibitor being a compound having the formula ##STR1## or a pharmaceutically acceptable salt thereof, wherein R.sup.1 is selected from the group consisting of H, --OH, --CN and --OCH.sub.3 ; R.sup.2 is hydrogen or a lower alkyl having from one to about 5 carbon atoms; R.sup.3 is selected from the group consisting of HNHCHR.su...

The sewage treatment process combines physico-chemical clarification using fine material or clay particles with anaerobic digestion of a concentrated sewage. The particles are preferably magnetite. The sewage (10) is mixed with magnetite (12) having a hydroxylated surface layer in tanks (14, 16, 18, 20) in which acid, inorganic flocculant and polyelectrolyte may be added if necessary. The organic material in the sewage is adsorbed on the particles during the mixing contact and a clarified liquid...

Method and formulation useful in treatment of glaucoma in a mammal wherein an effective amount of an active water soluble carbonic anhydrase inhibitor is administered, said inhibitor being a compound having the formula ##STR1## or a pharmaceutically acceptable salt thereof, wherein R.sup.1 is selected from the group consisting of H, NH.sub.2 CH.sub.2 --, --CH(Me)NH.sub.2, --CH(NH.sub.2)CHMe.sub.2, --CH(NH.sub.2)CH.sub.2 CHMe.sub.2, --CH(NH.sub.2)CH(Me)CH.sub.2 Me, 2-pyrrolidinyl residues wherein...

This invention relates to that method of processing charges of electrically conducting or semiconducting material by fusing the charge in a crucible by means of induction heating effects induced in the charge by a working coil surrounding the crucible. The invention is characterized in that the crucible is provided with a pouring aperture in the base thereof and that the charge is supported above the pouring aperture in the crucible at least during the fusing thereof by means of electromagnetic ...

Sewage treatment in which sewage is passed to a tertiary treatment plant from an activated sludge plant, said tertiary treatment including the step of intimately mixing lime and particular polyamines with the effluent from the secondary clarifier. The polyamines catalyze the reduction of phosphate in the sewage by the lime, thereby lowering the quantity of lime required to produce water having a satisfactory phosphate level.

Liquid whey is subjected to concentration, crystallization of lactose and removal of lactose crystals. The resulting whey is clarified and electrodialyzed. It can be sold or used in liquid form, or may be further concentrated and dried to make a demineralized dry product with a reduction in ash content of at least 15 percent.

The invention relates to a process for rendering harmless sticky material adhering to cotton fibers, termed "honeydew". According to the process the cotton is heated for a brief period of time to a temperature adequate to render said honeydew hard and brittle, and this without adversely affecting the cotton fibers. There are also provided means for effecting such treatment of cotton fibers in a continuous manner.

Textile strand compressively crimped, as by stuffer crimping, is withdrawn longitudinally from a compact accumulation thereof in a laterally confining region through a countercurrent flow of gaseous fluid.