Document B5GOEQKjD8NKg8xDB5xqY57qX

JENKINS PRACTICAL PIPING LAYOUTS How fo plan on INDUSTRIAL WASTE TREATMENT SYSTEM The rising costs and difficulties of providing satisfactory water supplies have mode municipal ities, state governments and industry increasingly aware of the need for conserving present sourcesIn an effort to eliminate or reduce pollution of waters by sewage or industrial wastes, many states and municipalities have drawn up stringent codes reguloting the types of waste which may be dis charged into streams and rivers. Waste can be treated by either chemical, phy sical or biological means, depending on its nature. The simplest treatment is the physical, which Involves screening, filtration, ana gravity separa tion. This method is particularly effective on wastes containing suspended solids. The custom ary treatment for human sewage is biological, to allow tho formation of stable organic compounds through tho action of bacteria. A great deal of chemical waste resulting from industrial proc esses responds most readily to chemical treatment. Neutralization of acid waste is one of the most common problems encountered in the treatment of industrial discharges. When such waste flows untreated into a stream, it destroys orgunic life and leads to the abandonment of the streom as a source of water supply. Lime Is used for neutralization of acid waste in the system shown. While other chemicals are available, lime is usually the cheapest and most satisfactory neutralizing agent. The waste nor* malty flows to a digester which allows for settle ment of solids and serves ns a storage center from which flow to the troutmenl tank is regulated by a liquid level controller. The treatment tank is equipped with on agi tator which mixes the waste with the lime slurry to provide a neutral solution. In (renting certain types of waste, precipitation of a solid may occur. This can be removed at intervals, for possible industrial use, in the plant or elsewhere, or for disposal. The effluent is decanted off the top of the Ireatmont tank. The proportion of lime to be added is deter. SIND SOB IMIS POIDIR. It iJluitralu* and diurlbn lS unique cunftrvctlan Intvai at JuLIn ll-Salt Oats Valvt*. ` *nd comp lata dI*nJon*. Till out and mil IN# coupon lodoy. mined l>y o rccnliiiiig (>H regulator, which on,, W ates the control valve on the slurry |jne> responsive lo the pH of the woste and admits ill required amount of slurry for neutralization. * The slurry is made by admitting quleklims I end water, regulated by a liquid level controller I to the lime slurry mixer, which is equipped"With 9 an agitator. Emergency lines for dircet aisehnrn bypossing tho treatment system are indicated Lq 1 the diagram. 9 Bronze valves are used on the fresh supply lines and all iron valves on tho lime ilurr lines and waste tines in this system. Tho Fig. 4g>A < recommended for the lime slurry tank drain U . the popular Jenkins U-Uolt Cate. The timpU, rugged construction of this valve makes it a prac tical dcsigu for punishing service, especially where sediment is a problem. It is easy to dean, < ottd the removable "Bonnet-Saver Bushing" can be quiekly and economically replaced, when J worn, to restore new-like operating efficiency. It 1 is available with Iron Body, Bronze Mounted (os I Fig. 42A) os well os All Iron. j Consultation with accredited piping engineers j and contractors is recommended when planning ` any major piping installation. To save lime, lo simplify planning, to gel all lli'e advantages of Jenkins specialized valve engineer^ ing experience, select oil the valves you need from the complete Jenkins line. It's your best assurance of lowest cost in the long run. Jenkins Bros., 100 Pork Avc., New York 17. Sold through leading Industrial Distributors everywhere. All Iron WoSgo - lnM Traveling Spindl* U-SOIT 0*11 VAlVt ISO lb*. Sloom iisu.o,w.o. j , . |, .j t I 9 . JtMKINS SBOIw 190 Parti A*o. Now Torfc IT, N. IIhm mN foMor on U0tt Oatat CssijMiy