Presentation for 4- course students from communal hygiene

Methods for purification of drinking water. Hygienic evaluation of the effectiveness of the treatment facilities at the main method of treatment.

1 Main methods 2 Coagultion water 3 Coagulation stage 4 Flokulyant 5 Factors and coagulation K 6 Stages of coagulation 7 Settlers and their types Sxema drinking water

 Learn the basic methods of improving the water quality of centralized water supply and basic facilities premeniyaemy at improving water quality Teach students the basic methods of improving water quality - Learn the basic legal documents regulating the activity of the doctor in the communal hygiene When assessing the effectiveness of the treatment facilities. - To teach students to use the legislative framework in its assessment of the effectiveness of the treatment plants and giving an opinion. - To teach students to correctly assess the effectiveness of the treatment facilities

 - Methods to improve water quality - Basic techniques to improve water quality - Specific methods for improving water quality

 Be able to evaluate the effectiveness of sanitary facilities at the main methods used to improve water quality Facilities at the main methods used to improve water quality

 What types of sump different? Based on the principle that the filters? Types of domestic potable water supply? That this water? What do you understand by the main methods of improving water quality?

 What do you mean by special methods to improve water quality? At what points in the sampled water distribution network under laboratory and production control for its quality? For some indicators defined by the quality of water in the distribution network? Where a determination of residual chlorine with centralized water supply

Types and methods of improving water quality and composition of wastewater treatment plants depends on the initial quality of the water source waters To improve the quality of water used 2 methods: Basic methods of improving the quality of drinking water Specific methods for improving the quality of drinking water -Basic methods of improving the quality of drinking water Lighting- this release of water from suspended solids Decolorization- this release of water from the color of the colloidal and dissolved substances Disinfection - a release of water from pathogens

Deposition of suspended solids occurs at varying rates which depend on the shape, size, density, surface roughness of particles and the water temperature For preliminary calculations, the rate of deposition of suspended matter, detain sump can be used: for colored water containing suspended solids in an amount of up to 50 mg / l., With coagulating the suspension of mm / sec., For turbid waters without treatment coagulant mm / s. In the direction of water movement are distinguished: horizontally sumps - Vertical settling tanks, are the radial settlers. Microfilter delayed 30 to 40% of suspended solids, full of zooplankton and phytoplankton %

In the direction of the water sumps is divided into three groups: HORIZONTAL VERTICAL RADIAL Horizontal tanks - are rectangular pools in which water is subject to clarification, moves along the pool from one wall to the opposite one. Bottoms horizontal tanks satisfied with the longitudinal slope of 0.02 mnee to pit for sludge VERTICAL settler - used for water pipe with a capacity of 30,000-40,000 meters per day. VO is generally circular tank with a conical bottom with a slight inclination towards the center When defending the suspended matter after coagulation water velocity was assumed to be mm / sec. When defending the suspended matter after coagulation water velocity was assumed to be mm / sec. Circular tanks - receives the application for clarification of highly turbid river water

Illuminator with a suspended sediment - water clarification process proceeds more efficiently in the case where the treated water is mixed with a coagulant, passed through a previously formed precipitate (coupling medium), located in a suspended state. The deposition rate of the slurry is increased by 2-3 times compared to that of bulk storage, dramatically increases the effect of water purification -After sedimentation of water filtered by the flow velocity are following filters Slow ( mm / sec Quick (5-10 mm / sec) In the direction of flow of the filter Odnopatochny dual-branch By the number of filter layers monolayer bilayer three-layer multilayer

Before entering the clarifier water is to be released from the air bubbles to not it stirs the precipitate weighed. If the design of the mixer provides air release, and to the movement of water from the faucet to the clarifier occurs secondary enrichment of the air, the air separator are not satisfied with the special METHODS OF QUALITY Main method clarification discoloration disinfection settling coagulation Special methods fluoridation defluorination deferrization softening deodorization

FILTS 1 Kvarts types 2 Antrased 3 Keramzet, Shungized 4 The crushed marble Microfilter and drums SITA - in the pre-treatment technology and water lakes and reservoirs - more importance is the removal of plankton

FILTRS TYPE ONE SIDES MIDDLE RAPID ONE SIDES TWO SIDES

 “ Summary: 1. "Health" under the guidance of prof. Demidenko NM T Guide to laboratory work on communal hygiene Goncharuk EI Moscow Sh.T.Otaboev, T.I.Iskandarov, G.T.Iskandarova "Kommunal hygiene" Tashkent 2010 th. 4 "Kommunal gigienadan Amal mashgulotlar Uchun ukuv kullanma. "Edited by Academician Iskandarova TI T. 2006y 5. "Communal Hygiene" E.I.Goncharuk Kiev in 2007 I, II part

 - Iskandarova GT "Regional san. gig. problems of protection of water sources "water inpatient population of Uzbekistan. T Health rules and regulations of planning and building of settlements of the Republic of Uzbekistan Sanitary norms of admissible levels of electromagnetic fields of radio frequencies Sanitary rules of design and maintenance of cemeteries Health rules and regulations and the optimum allowable building density residential areas of cities of Uzbekistan

 -Sanitary rules and standards for design of residential buildings in the climatic conditions of Uzbekistan Health rules and regulations setting up and maintaining public toilets Hygiene requirements for institutions, organizations, companies and individuals involved in the disinfection activities Health rules and regulations for the use of mobile phones Lecture materials.

O'z.Res.SSV veb-sayt TTA sayti – htt://web.tma TMA Wi-Fizone ZiyONet