انشاء محطة تنقية ومعالجة مياه ابار للاستعمال الادمى والشرب والاستعمال الصناعى بالسودان

Gentlemen / mondial trading group
Date / 15/5/2012
Subject / purification and filteration and treatment the griund water well of fabbi company for foods industrial-khartoum-sudan

Introduction

Treatment of groundwater:

Is the well water of the purest natural water sources relied upon by many of the world's population.

However, some water wells, especially deep of which may need treatment processes advanced and expensive could get out of treatment is to add chlorine to disinfect water and then pumped to the distribution network, as is the cleansing process as a single water treatment some of the wells clean too, which meet all the specifications of the water.

But this kind of water is at least a presence at the present time, so it added to the process of cleansing the majority of groundwater need to address the physical, chemical, either to remove some dissolved gases such as carbon dioxide and hydrogen sulfide, or to remove some metals such as iron and manganeze and minerals that cause water hardness , and dissolved gases are removed by using the ventilation.

The process of ventilation, which also removes part of the iron and manganese by oxidation, and may be the purpose of ventilation is also just happens to some deep-water wells that are high temperature, which requires cooling in order to preserve the efficiency of other treatment processes.

The removal of metals iron and manganese is up efficiently in chemical oxidation processes using chlorine or potassium permanganate.

The general nature of the groundwater treatment is to remove the hardness by sedimentation, water hardness consists mainly of calcium and magnesium compounds dissolved in water.

The hardness water due to its negative impact on the effectiveness of soap and other cleaning materials, adding to the composition of some sediments in the boiler and water pipelines, which contributed to the spread of water treatment plants, groundwater.

The following is a brief review of the different processes of groundwater in this type of stations: -


A (softening) sedimentation

Means the process to remove the hardness of water (water softening) removing vehicles elemental calcium and magnesium that cause hardness by chemical precipitation.


This is done in water plants by adding poly aluminium chloride as co-agultant and flocuulant as hydrated (calcium hydroxide) to the water where limited quantities of certain chemical reactions are formed by deposits of calcium carbonate and magnesium hydroxide.


IN some small tank is often add soda ash (sodium carbonate) with lime to reacting with some forms of hardness.


Include the facilitation process on the basin relatively small in size is the addition of chemicals where mixed with water at chemical tank mixing quickly for distribution in the water regularly, then transferred water into a large basin volume to keep it enough time to complete the chemical reactions and the formation of sediment, where mixing of water in this case, mixing is slow enough only to collect and make homogenous granules sediment deposition and preparing them for the next phase


By sedimentation

The process of deposition of the first processes that use rights in water treatment.

This process is used to remove suspended matter and deposition to remove the sludge generated by treatment processes such as facilitation and chemical flocculation.

And electrostatic precipitators rely on in its simplest act of gravity where still under the influence of sediment weight.


Precipitators are often made up of circular concrete or steel tanks or rectangular in shape containing the inlet and outlet with design is an appropriate way to remove the largest possible amount of sediment, where taken into account the hydraulic characteristics of the movement of water go inside.

The main features of the sedimentation basin contains a system for the collection of sediment (sludge) and the related to the orchard at the bottom of the basin where it is withdrawn and disposed of by private pumps.



(re-carbonization )

Because water from are the sedimentration process are often saturated with deposits of calcium carbonate, and as part of this sediment is left in the water after passing through basin sedimentation is likely to precipitate some of them on the filters or in the distribution networks, leading to blockage or reduction of the efficiency of filters networks .


Therefore, the sedimentration process to ensure there is no such damage.

And recarbonization processes most commonly used in traditional application is to add carbon dioxide in limited quantities in order to convert the remainder of the calcium carbonate to a soluble bicarbonate.


filteration:

Is the process by the removal of suspended solids (turbidity). And that by passing the water through the inner porous such as sand, this process occurs naturally in the earth layers when river water seeping into the ground.


Therefore, the ratio of turbidity is very little or no when compared groundwater compared to surface water (rivers, lakes, and rainwater catchments) that contain high levels of turbidity.


The filteration process is also used to remove the sediment remaining after the sedimentation processes in the chemical treatment processes such as sedimentation and flocculation.


Is the removal of suspended solids from drinking water are necessary to protect public health on the one hand and to prevent operational problems in the distribution network on the other.


The works of these materials on the protection of microorganisms from the disinfectant effect of article, and it may react chemically with the material purified as they may react chemically with the purified material, which reduces the effectiveness of the proportion of Microbiology, has been suspended materials are deposited in some parts of the distribution network, which may cause in the growth of bacteria and odor of water and change the taste and color.


where the filteration process within the center of the filteration media as a layer of silicon sand, and if possible take advantage of the newly ground charcoal and sand Garnt.


When the passage of water through the inner filter stick suspended matter in the walls granules center, and with the continuation of the nomination process narrowing gaps in the middle of the water so that the candidate a little efficiency, then you must stop the process of filtering and washing the candidate to clean up the gaps of the sediment is in the process of washing pump clean water high pressure from the bottom the candidate through the drainage system resulting in the lower center and the expansion and movement of particles collided with each other, and so are cleaned, which hung out of the sediments.


The rush of these deposits with the wash water that accumulates in the channels of a private fund placed at the top of the candidate, and moved to the place where the waste treatment plant and continue this process of washing for a short period of time (5-10 minutes) after which the candidate is ready to work.


cleansing:

Is the process used to kill micro-organisms that cause disease (pathogens), and this is the process by using heat (heating) or ultraviolet radiation or chemicals such as bromine or iodine or chlorine or ozone concentrations do not harm humans or animals.


The method of heating to the boiling point first methods used in the cleansing and still the best props in an emergency when the amount of water is few, but when the amount of water is suitable be as large as the amount of water in treatment plants due to the high cost.


The use of ultraviolet (UV) and brominated and iodine to contest expensive ways. This has spread the use of ozone and chlorine to disinfect drinking water, where in Europe & America the use of ozone and chlorine is more using.

distribution network, in order to purge water from any micro-organisms may interference in the network.

A detailed description of the style of the proposed treatment system according to the well is located

First / underground water well.

II / flow rate = 25 cubic meters / hour = 25,000 liters / hour.

III / pumps lift water from the well capacity of 30 cubic meters / hour

IV / iron cylindrical tank called (chemical treatment tank) capacity of 30 cubic meters / hour electric provider with vertical mixer with speed 400-1000 RPM.

V / chemicals preparation tanks of the 3 tanks capacity of 1 cubic meters per tank and fitted with injection pumps and mixers preparation the chemical coagultant (poly aluminum chloride) + flocuulant (calcium hydroxide hydrated) + clarifire (anionic polymer).

VI / sand filter with flow rate of 30 cubic meters / hour and has the collection of sand coarse and fine particles + fine + coarse gravil with the amount of 1 ton sand + gravil

VII / active granular carbon with flow rate of 30 cubic meters / hour and has quantity of 2 tons with particle size ranging between 1-3 mm

VIII / chlorination tank using a chemical calcium hypochlorite concentration of 65-70% capacity of 1 cubic meter provide with mixer and chemicals injection pump and are injected into the line of water pipes from the outside directly to the carbon filter processing unit osmosis membranes

graphical Table of removal processing unit of the initial water wells contaminated groundwater with terms of color, taste, smell and hardness salts and heavy metals:

Series statement Type Quantity type of treatment
1/ 2 lift pumps from well

2/ 1 chemicals treatment unit steel tank

3/ 1 chemical treatment tank mixer

4/ 4 mixers

5/ 4 injection pump

6/ 1 plastic tank to prepare chlorine disinfection and chlorination

7/ 1sand filter Advanced

8/ 1 carbon filter Advanced

9/ poly aluminum chloride solid 6 kg / day chemical

10/ calcium hydroxide hydrated powder 25 kg / day chemical

11/ anionic polymer solid powder 3 kg / day chemical

12/ sand filters coarse and fine solid 700 kg / year advanced

13/gravil filters fine and coarse solid 300 kg / year advanced

14/ Granular Activated Carbon solid 2000 kg / year advanced

15/ calcium hypochlorite solid 22.5 kg / day advanced 17/ Plastic

Pipes Polyethylene 20 meters of each treatment

18/ control panel

Financial offer

(Requirements mechanically and chemically for a year)

Note (fixed and mechanical requirements do not change)

Series statement, the unit price in Egyptian pounds total number

1 / water pump lift a European capacity 30 cubic meters / hour
35000 egp

2 / tank chemical treatment capacity of 30 cubic meters
50000 egp


3 / tanks for prepare chemicals 3 9 000

4 / chemical prep. Mixers 3 18 000

5 chemical treatment tank mixer 1 10000

6 mixer of chlorine 1 6000

7 tank to prepare chlorine 1 3000

8 sand filter 1 30 000

9 Filter Carbon 1 30000

10 poly aluminum chloride 160 kg / year 43,200

11 calcium hydroxide hydrated 9,000 kg / year 45,000

12 anionic polymer 1080 kg / year 64,800

13 sand filters coarse and fine 700 kg 3500

14 gravil filters fine and coarse 300 kg 1500

15 Granular Activated Carbon 2000 80 000

16 (calcium hypochlorite) 8100 162 000

17 pipes 100 2000

18 control panel 1 25000

19Total cost 618000 egp



The previous table a comprehensive manufacturing unit and the requirements for year
First / pumps + mixers + tank + filter + pipe + control unit and fixed operating and to ensure that do not change for two years

Cost = (218,000 Egyptian pounds)

II / media sand and carbon media are replaced every 3 years, because the filters fitted with backwash

Cost = (85,000 Egyptian pounds)

III / chemicals, a variable item and need to compensate the possible supply and in the year to 4 monthly payments

Cost = (315,000 Egyptian pounds)

Payment system

The first and the second items

75% when contracting

25% on Delivery



The third item

100% at contract warehouses and delivery company in Cairo

Price is inclusive of sales tax
Price is inclusive of transport to the port in Egypt and across the seas and customs expenses


Offer is valid for 30 days

warranty two years

TECHNOLAB EL-BAHAA GROUP
EGYPT
SCIENTIFIC TECHNICAL OFFICE
GENERAL.DR
BAHAA BADR
CHAIRMAN
002/01117156569----01229834104----01063793775
INFO@TECHNOLABELBAHAAGP.COM
WWW.TECHNOLABELBAHAAGP.COM

EGYPT-CAIRO-NASR CITY-YOSIF ABBASS ST.,NO.24