Israel's criteria for effluent application for agricultural irrigation  (1)

Constituents

(mg/1)

 

 

 

Group A

cotton, sugar beet

plants for seeds

production

Group B

olives, peanuts,

fruits where the skin

is not eaten, grass for

animals

Group C (2)

gardens, vegetables

for cooking fruits

for the conservation

industry

Group D (3)

other plant ((un-

limited irrigation

Effluent quality (4)

BOD5 - Total

BOD5 - Filtered

Suspended Solids

Dissolved Oxygen

Coliform Counts/100 ml

Residual Chloride

 

60

-

50

0.5<

-

-

 

45

-

40

0.5<

-

-

 

35

20

30

0.5<

250

0.15

 

15

10

15

0.5<

12(80%) & 2.2(50%)

0.5

Mandatory treatment

Sand Filtration (5)

Chlorination - Minimal Contact Time, Minutes

 

-

-

 

-

-

 

-

60

 

required

 

120

Distance (m)

Residential Areas

Paved Roads

 

300 (sprinkling)

30

 

250

25

 

-

-

 

-

-

Comments:

(1) The criteria are not limited to the treatment method however for oxidation pond they should be adapted to a retention time higher than 15 days.

(2) Irrigation should be terminated two weeks before the pick-up season and no fruits that fall on the ground should be taken.

(3) Observation and examination frequency in accordance with the irrigation season.

(4) The examination of the criteria should satisfactory at least at 80% of the cases.

(5) Sand or equivalent filtration which is according to the criteria.

(6) All examination should be done in official governmental laboratories.