Introduction
The Institution
for Standards and Metrology is the national entity
responsible for Issuing standards in Jordan. Standards
are set by technical committees formulated by The
Institution for Standards and Metrology from members
representing main parties concerned with the subject.
All concerned parties have the right to express their
opinion and comments on the final draft of the subject
standard during the notification period in order to make
the Jordanian standards in harmony with international
standards, to alleviate any technical boundaries facing
trade and to facilitate flow of commodities between
countries.
Based on this, the
permanent technical committee for water and wastewater
No.17 has set the Jordanian Standard 893/1995 dealing
with “Water-Reclaimed Domestic Wastewater” and
recommended its approval as a Jordanian Technical base
No. 893/2002 in accordance with article (11) paragraph
(b) of the Standards and Metrology Law No. 22 for the
year 2000.
Water:
Reclaimed Domestic Wastewater
1. Scope
This Jordanian
standard is purposely set to specify the conditions that
the reclaimed domestic wastewater discharged from
wastewater treatment plants should meet in order to be
discharged or used in the various fields mentioned in
this standard.
2. Standard
References
The following
standard references become conditions of this standard
when referenced. When a documented reference is dated,
the amendments after that date do not apply despite the
fact that any contractual party depending on these
references recommends using the latest edition of the
listed references. In the case that the reference is
not dated then the latest edition would prevail. The
library at the Institute for Standards and Metrology
contains current standards.
-Standard
Methods for the Examination of Water and Wastewater APHA.
1998
-Health
Guidelines for the Use in Agriculture and Aquaculture,
WHO. 1989.
3. Definition
The following
definitions are used for the purpose of this standard:
3-1 Domestic
wastewater
Is the water
produced from domestic usages and it could contain
industrial wastewater that comply in terms of quality to
the ordinance issued by the official parties for the
connection to the public sewer system.
3-2 Reclaimed
Water
Is the treated
wastewater to be reused according to the conditions of
this standard provided it is not mixed with water from
other sources.
3-3 landscape
Areas
Is the green areas
intended to be used for decoration and landscaping and
not for recreational purposes.
3-4 Mechanical
Treatment Systems
Systems that use
mechanical processes for treating water such as the
activated sludge system, the rotating biological
contactors system, the biological filters system, and
others.
3-5 Natural
Treatment Systems
Systems that use
natural processes for treating water by using aerobic or
anaerobic ponds, maturation ponds or others.
3-6
Disinfection
Is a process for
the removal or reduction of pathogenic and indicator
microorganisms that can be found in the water by using
disinfectants such as chlorine or chlorine dioxide or
ultraviolet rays or the ozone or any other disinfectant
approved by the official parties.
3-7
Industrial Crops
Crops used for
industrial purposes such as wood trees and olive trees
3-8 Field
Crops
Crops that are
planted on large areas and harvested once a year and
includes:
3-8-1
Forages
Crops planted in
order to utilize its vital aggregate (stems and roots)
such as berseem, sweet corn, sudan grass, Alfa Alfa, …..
3-8-2
Grains
Crops planted for
its high content of carbohydrate and used in the
nutrition of humans and animals and includes wheat,
barely, oats, corn (white).
3-8-3
Legumes
Crops planted to
utilize its seeds after drying such as lintel. fenugreek
and lupine.
3-8-4
Fibers
Crops planted in
order to utilize its fibers such as cotton and linseed.
3-8-5
Oils
Crops planted to
produce oil such as sesame, soya bean and olives.
3-8-6
Sugar
Crops planted to
produce sugar such as sugar beet and sugarcane.
3-9
Cooked Vegetables
Vegetables that
are usually eaten after cooking and includes: eggplant,
squash, beans, cornflower, potato, okra, pees, broad
beans, turnip, spinach, jew’s mallow, artichoke.
3-10
Uncooked Vegetables
Vegetables that
are usually eaten raw and includes the following:
tomato, cucumber, Egyptian cucumber, pepper, cabbage,
onion, carrot, radish, lettuce, parsley, mint, rocket
(watercress), coriander, purslane, strawberry,
watermelon and cantaloupe.
4.
General Requirements:
4-1
The Reclaimed Domestic
Wastewater standard has two primary components
a)
Reclaimed water discharged to streams, wadis or water
bodies.
b)
Reclaimed water for reuse.
4-2
Reclaimed water must comply with the conditions stated
in this standard for each of its planned end uses.
4-3 It is
not permitted to dilute or mix reclaimed water
discharged from wastewater treatment plants with pure
water intentionally to comply with the requirement set
in this standard.
4-4 Should
reclaimed water be used for purposes other than those
mentioned in this standard (such as for cooling or for
fire distinguishing), special standards or guidelines
are to be applied in each case after conducting the
necessary studies taking into consideration the health
and environmental dimension.
4-5 Official
and specialized concerned parties overseeing the
operation and development of wastewater treatment plants
must always work towards improving the effluent quality
to levels, maybe, exceeding those presented in this
standard to ideally use the reclaimed water and protect
the environment.
5.
Standard Requirements:
5-1 Reclaimed
Water to be discharged to streams, wadis or water bodies.
5-1-1
It
is allowed to discharge reclaimed wastewater to streams
or wadis or water bodies when its quality complies with
the properties and criteria mentioned in table (1) and
it is prohibited to discharge it into wadis draining to
the gulf of Aqaba.
5-1-2
When
reclaimed water passes on areas that are above or
leading to ground water aquifers, measures must be taken
to prevent the leakage of the reclaimed water to ground
waters.
5-1-3
When
discharging reclaimed water to streams, wadis or water
bodies that are in direct contact with the public it is
preferred to use any of the suitable types of
disinfectants to protect the public health. When
Chlorine is used, the free residual chlorine
concentration shall not exceed 1 mg/l.
5-1-4
Natural
treatment plants are permitted to exceed the specified
values for E Coli numbers when water is
discharged to wadis leading to storage dams where the
water is stored and used totally for irrigation
purposes. In the event that this water is used prior to
reaching the dam, then the criteria specified for the
reclaimed wastewater for the purpose of reuse and
according to the nature of the end use must be applied.
5-1-5
Table 1 – Allowable limit for properties and criteria
for discharge of water to streams or wadis or water
bodies
