Department of Municipal Hygiene and Occupational Health

Lecture on environmental sanitation for 4th year

Theme: WATER BODIES Pollution sources

Lecturer Professor.Iskandarova G.T.

MATTERS TO BE

  analysis• MAIN SOURCES OF WATER BODIES.

CHARACTERISTICS OF HOUSEHOLD WASTE WATER.

• Industrial wastewater characteristics.

MAIN SOURCES OF POLLUTION OF WATER BODIES

HOUSEHOLD WASTE WATER

Manufacturing water

Drainage water from irrigated lands

WASTEWATER breeding complexes

Storm water WATER

WATER TRANSPORT

With solid runoff of eroded land

Molev rafting

CHARACTERISTICS OF HOUSEHOLD

         SEWAGE

•WASTE TERMED water withdrawn Ductwork (Sewer) AFTER USE IN HUMAN ACTIVITY.

ECONOMIC - DOMESTIC WASTEWATER

As a result of use of the public tap water

To meet the cultural and everyday

And physiological needs.

NUMBER OF POLLUTION FROM PER PERSON ENTERING THE PUBLIC SEWERAGE SYSTEM

DAY

Ingredient number of pollution on one inhabitant,

gr

Substended matter 65

BPK 5 of not clarified liquid

54

BPK 5 of not clarified liquid

35

Ingredients The amount of pollution per capita

suspended solids 65 BOD5 unclarified liquid 54 BOD5 clarified liquid 35 BOD unclarified liquid 75 BOD clarified liquid 40 nitrogen ammonium salts 8 Phosphates 3,3 Chlorides 9 SAS 2,5

BPK full of not clarified liquid

75

BPK full of not clarified liquid

40

Nitrogen ammonium of salts

8

phosphates 3,3

including from the washing substances

1,6

surfactants chlorides 9

PAA 2,5

\Wastewater resulting from direct use of water in technical operations;

Wastewater from the auxiliary operations and processes;

Waste water from the auxiliary and service departments.

Characteristics of industrial wastewater

Types of industrial wastewater in character education:

Municipal wastewater

They are a mixture of domestic and

industrial wastewater.

In the city sewer system must not descend

Wastewater

containing toxic

substances.

Wastewater

produce explosive gases.

Wastewater

containing oil and

oil products

, etc.

drainage water

All that is grown in agriculture, grown only with irrigation

water.

For soil improvement (decrease in salinity)

and increasing productivity of

agricultural fields is carried drains.

Wastewater breeding complexes

In these conditions, a qualitatively new type of wastewater - liquid manure, which, unlike conventional manure causes increase in pathogenic bacteria and helminth eggs.

Facilities for storage of liquid manure and manure must meet the following requirements :

ensure the prevention of the

spread of infectious diseases;

- Exclude infiltration into

the soil and groundwater;

The total capacity of manure should be calculated for the period,

provides an exemption from manure pathogens and

helminth eggs (at least 6 months) from the date of receipt of their last portions.

Storm sewage

Storm sewage consist of:

- Rainwater;

- Meltwater;

- Watering and washing water.

water transport

Water transport is also a major source of water pollution. On ships formed 3

kinds of wastewater:1. Fecal

2. Household3. bilge produced in the engine rooms that contain petroleum products and

phenols.

Pesticides get into

water bodies:

with rain and melted snow;

pesticide contamination

- With drainage and

water collector;

aviation and ground

handling;

with sewage enterprises pesticides.

The composition and properties of water reservoirs or water in

paragraphs drinking and cultural and community water should not

exceed the limits of maximum permissible concentrations of harmful substances in water

reservoirs.

THANK YOU FOR ATTENTION!