Chlorination of WaterJ. Wiley & sons, Incorporated, 1918 - 158 من الصفحات |
طبعات أخرى - عرض جميع المقتطفات
عبارات ومصطلحات مألوفة
aftergrowth Agar Amer ammonium chloride apparatus approximately available chlorine bacteria bacteria per c.cm bacteriological bleach solution c.cms calcium calcium hypochlorite carbonic acid cells cent of available chemical chloramine chloramine process chlorinated water chlorine gas coli colour concentration contact period cost cylinders Diagram dilute discharge disinfection dosage effect efficiency electrolytic electrolytic hypochlorite experiments free chlorine gallons per day germicidal action hydrochloric hydrolysis hypo hypochlorite solutions hypochlorous acid increase Jour liquid chlorine machines method million gallons minutes nitrogen trichloride operation organic matter orifice Ottawa Ottawa River oxidising oxygen p.p.m. of available p.p.m. of chlorine pipe potassium potassium iodide pound of chlorine pressure produced purification quantities ratio raw water reaction reduced results obtained Rideal salt samples sewage shown slow sand filters sludge sodium chloride sodium hypochlorite sterilisation TABLE tastes and odours temperature tion titrate treated water treatment typhoid rate typhosus usually valve water supply Waterworks Assoc
مقاطع مشهورة
الصفحة 147 - Mix 1 cc of the tolidin reagent with 50 cc of the sample in a Nessler tube and allow the solution to stand at least five minutes. Small amounts of free chlorine give a yellow and larger amounts a yellow-green color.
الصفحة 11 - From the proofs before me of the constant observations of the effects of this device, I am of the opinion and find that it is an effective process, which destroys in the water the germs, the presence of which is deemed to indicate danger, including the pathogenic germs, so that the water after treatment attains a purity much beyond that attained in water supplies of other municipalities.
الصفحة 133 - ... was added. The use of smaller amounts of coagulant during the period of combined disinfection and coagulation resulted in an increase of nearly 25 per cent, in the quantity of water passed through the filter between washings, and also in a material reduction in the cost of chemicals.
الصفحة 12 - ... water supplies of other municipalities. The reduction and practical elimination of such germs from the water was shown to be substantially continuous. Upon the proofs before me, I also find that the solution described leaves no deleterious substances in the water. It does produce >a slight increase in hardness, but the increase is so slight as in my judgment to be negligible. I do therefore find and report that this device is capable of rendering the water delivered to Jersey City pure and wholesome...
الصفحة 7 - Health studied the disinfection of sewage effluents in cooperation with the Bureau of Plant Industry of the United States Department of Agriculture. The results, reported by Kellerman, Pratt, and Kimberly,0 related in part to the use of chloride of lime.