CASE STUDY 27/Sept./2001

Name: National Poultry Slaughter house.

Place: Karak – Jordan

Duration of study: 16/5 – 16/9/2001

DESCRIPTION:

A wastewater treatment plant consisting of:

Collection tank (160 M3).

Aeration tank (7500 M3).

Clarifier tank (1600 M3).

Sludge collection tank (1130 M3).

Daily influent is 800-1000 M3.

Waste water flows from the production area to the collection tank by a gravity and is pumped up to the aeration tank, and pumped thereafter to the clarifier.

Objectives of the study

To reduce the parameters of effluent as follows:

Parameter	Current	Standard required
COD	4211 mg/L	150 mg/L
BOD	2725 mg/L	50 mg/L
TSS	1276 mg/L	50 mg/L
FOG	612 mg/L	5 mg/L
PO4	71 mg/L	15 mg/L
NH4	310 mg/L	5 mg/L
SVI	452 mg/L	150 mg/L

To eliminate the bad odor of effluent, and of the sludge tank.
To remove the 65 cm thick floating layer on the sludge tank.

RESULTS

A dosage plan using Aqua Clean was devised and implemented on The 16th of May 2001, the results were monitored, and the following are the findings.

Parameters

Parameter	16/5	16/6	3/7	9/9	16/9
COD	4122	1618	630	293	107
BOD	2725	779	275	46	12
TSS	1276	760	311	153	64
FOG	612	367	5.3	1.1	0.3
PO4	71	48	3.6	0.26	0.1
NH4	310	187.3	120.44	13.45	2.1

Bad Smell

One week after the starting date of the treatment, the bad smell was hardly traceable, and as of the 28^th of May (12 days after treatment) and through the entire duration of the treatment no bad odor was detected.

The floating layer on the sludge tank.

Thickness (cm)

16/5		16/6		3/7		9/9		16/9
65		32		0.5		000		000

CONCLUSION

The usage of Aqua Clean was effective in reducing all wastewater parameters to the limits set forth.

The smell and floating layer of sludge were both eliminated.

One month after the starting date of the trial, the color of the effluent has turned into a sort of pinky color for two weeks and returned to clear water color thereafter. We do believe that the reason for that change of color was the highly active purple bacteria in the first four weeks when there was a high concentration of hydrogen sulfide in both the aeration and sludge tank.

The customer was given two plans to choose from: one for 60 days and one for120 days. For economical reasons, the customer has decided to go for the120 days trial and save about 30% of the cost.