Analyzing the Environmental impact of industrial wastewater: Impact on sewerage system. Impact on water bodies. Impact on factories environment

1. ٢٠/٠٣/١٤٣٥
Analyzing the Environmental
impact of industrial wastewater
Industrial Wastewater Discharge
and Environment
1. Impact on sewerage system.
2. Impact on water bodies.
3. Impact on factories environment
Prepared and Presented by
Dr. Helaley Abdel Hady Helaley
Chief of Industrial Wastewater, Sludge and Reuse Sector
Alexandria Sanitary Drainage Company.
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International Summit: 19 – 20 January 2014
1. Impact on sewerage system
1. Impact on sewerage system
Direct discharge into Alexandria public sewerage systems
Treatment plants
Pump stations
impacts
Scum
•Blockage in screens as a result
of the accumulation of Metals
Heavy scum
layers is difficult to remove,
reduce screening efficiency .
Hazardous organic matter
•Difficulty of sludge drying
High Temperatrure
process.
•
Detergents
•Impeding the processing of
primary and secondary treatment
operation which affects the re-use
Organic and inorganic SS
of treated .
•Increasing organic load of the
effluent
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Dr. Sama MZ
Pipelines
Organic solvents
impacts
- The escalation of gases
Impacts
Acids and alkaline discharge
- Corrosion
Dissolved bubble gases
cause suffocation for the
workers.
- Flow reduction .
Oil, Grease & Detergents
- Precipitation .
Scum
Sudden flow changes
- Clogging and flooding.
- Corrosion of moving parts
causing pump failure
Grit and suspended solids
- Rise in pump temperature.
- Corrosion in the pump
column.
- The difference in the
speed of the flow of water
Sulphides
inside pipes
- The escalation of toxic
Organic Solvents
hazardous gases to
workers.
- Reduce the life span of
the network.

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2. Impact on Water Bodies
1. Abo Qir bay pollution sources
Main industrial pollution sources into Alexandria water bodies
Along the coast of Abu-Qir Bay, there exist about
22 different factories representing four major
categories of industrial wastes which are: food
processing and canning, paper industry, fertilizers
industry and textile manufacturing.
The wastes of these industries are of either
organic or inorganic nature and are pumped to the
sea through El-Tabia pumping station; it pumps
out an average amount of 1.5–2.0 million m3 of
polluted water per day
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West Zone of Abo Qir bay and the main industries disposing their
effluents into it.
Industrial Companies that
discharges directly into
Amia drain then to Abo Qir
through Tabia pump
station:
- National paper company.
Industrial Companies that
discharges directly into Abo
Governorate
-Abo Qir for Fertilizers co.
- Agrokim for Agricultural
Chemicals co.
-Abo Qir power station.
- Chemics for pesticides
co.
-60 Ton TSS.
-Nasr for drying
agricultural.
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The pollution of Abu-Qir Bay region induced
a panic oxidative stress in fish living in this
area.
Qir Bay at Alexandria
- Kaha for preserved foods
Co.
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Abo Qir bay pollution risk
In addition to discharge of four big companies at Kafr ElDawar with rate of 95000 m3/day
This indicates that the industrial wastewater
treatment in this area is not adequate to
avoid the hazardous effects of such
pollutants.

3. ٢٠/٠٣/١٤٣٥
2. Lake Maryout problems
Impacts of Marine Pollution
1. Create unpleasant sea shore conditions.
2. Affecting different touristic activities.
3. Affecting fishery activities.
1 - Water quality deterioration
3 - Reduction of lake production
2 - Reduction of surface area
4 - Lake depth flocculation
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Discharge quantities on lake maryout
*Total discharge on lake maryout 11,7 Mm3
Industrial drains,
63 thousand
m3/day,
Domestic drains,
Agricultural drains,
900 thousand m3/day,
8 Mm3/day,
Fresh water 7 2,7
Mm3/day, 23% of
7.7% of total
68% of total
total discharge.
0.54% of total
discharge.
discharge.
discharge.
Direct discharge of industries into Maryout lake
There are 6 main companies discharges its industrial
wastewater through lake Maryout.
1-Misr Amreya Spinning & Weaving (12,000 m3/d).
2-Petrochemical Company (25,000 m3/d).
3-El Amreya Petroleum Refinery Company (10,000 m3/d).
4-Salt and Soda Company (120 m3/day).
5-Sidi Krir Petrochemical Company (1000 m3/day).
6-Misr Petroleum Company (35 m3/day).
The Total Direct Discharges = 48,155 m3/day
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4. ٢٠/٠٣/١٤٣٥
The major reason of the poor water quality in the Lake Maryout is the disposal
of up to 900,000 m3/d of primary effluent of ETP and WTP discharges into lake
Maryout and direct discharges from petroleum and chemicals industeries .
Different Industrial,
agricultural and sanitary
sources on Lake Maryout
Misr
Petroleum
‫ءا‬
{( ٢) ‫ر ر‬
The dissolved
oxygen
concentration in
the Lake drops
to as low as
0.2 mg/L
with high
concentration of
Nitrogen.
}
Amriya
Petroleum
Agricultural drains
Misr Petroleum
Merghem
Roads
West Noubaria drainً
Amriya
Textile
Canal water
Drains
Indirect discharge
Salt and Soda Co.
Direct discharge
Petrochemicals Co.
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Sidi Krir for
petrochemicals Co.
Alex Fiber
Co.
This effluent has high organic load and low oxygen content.
Domestic sewage
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Activities to restore the Lake ecosystem
3- El Max bay pollution problems
Increase the dredging activity of the sediments in all basins in order to
improve water circulation, self cleaning and fish production
•
- Reeds harvesting, by the provision of additional machines to the fishery
department. This activity could become financially self sustainable by
the development of a paper making industry that would buy the reeds.
El_ mex bay receives 1012
Mm3/day
through
- Provision of engineered wetland in strategic locations (Oumoum and Kalaa
drains outfalls) in order to reduce the organic pollution and nutrient
loads of water entering the Lake
station.
- Aerating the water at the outlet of the WTP and Kalaa drain in order to
increase the BOD and decrease the H2S emissions
-Increasing the water level and thus the storage capacity of certain
basins.
-
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of
the
overflow of Maryout lake
El-mex
pump

5. ٢٠/٠٣/١٤٣٥
Direct discharge of industrial waste into el-mex bay.
el{(١١) ‫ر ر‬
3. Impact on Factories environment
}
Borg El-Arab is a new industrial city within Alexandria containing around 1200
factory distributed within four industrial zones. The actual working is 700.
Industrial activities includes: food, plastics, paper, weaving, building materials,
chemical, pharmaceutical and various industries….etc.
From the preliminary survey it was found that all factory's
effluents were not complying with the limits of Law 93 for
year 1962 and its presidential decree 44 for year 2000.
‫ا‬
‫ا ا‬
El Mex pump stations
ElMex tanneries complex
They was dispose their raw wastewater directly into the sewerage
system, which creates chronic street flooding problems all over the
industrial zones.
As well as affecting the quality of the old treatment plant influent
located at the east of the city and accordingly will affect the newly
instructed tertiary treatment plant.
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Microbial pollution and production operation threatening
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•
.
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Visual pollution.
Traffic problems
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Unpleasant odor emissions.
Flies problem.

6. ٢٠/٠٣/١٤٣٥
In and Out Infrastructure threatening
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Under these circumstances we would like to stress on the
importance of applying On-line Monitoring systems to assure
effective control of industrial effluent quality to define on spot the
violating industries and effective to enforcing industries to minimize
their effluent pollutants .
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To minimize the amount of industrial discharges it must be
encourage investment in the field of environment-friendly
production technologies, applying sustainable industrial
wastewater treatment options and
encouraging using the most favored waste minimization
options
.
Cease Industrial Pollution =
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Clean Environment

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