| INDUSTRIAL WATER TREATMENT: |
Cooling towers, Cooling ponds and reservoirs generally face the problem of slimes. The problem is solved by dozing Aquafit solution of suitable concentration under close monitoring. The Aquafit is useful in preventing growth of algae over cooling tower distributors and improve the efficiency of process by keeping the pipelines and cooling equipments in good condition. |
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| SEWAGE AND WASTEWATER EFFLUENT TREATMENT
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The disinfection of sewage effluent must be evaluated by determining the total number of coliform bacteria and / or faecal coliform bacteria, as determined by the Most Probable Number (MPN) procedure, if the chlorinated effluent has been reduced to or below the maximum permitted by the controlling jurisdiction.
On the average satisfactory disinfection of secondary wastewater effluent can be obtained when the chlorine residual is 0.5 ppm after 15 minutes contact. Although the chlorine residual is the critical factor in disinfection, the importance of correlating chlorine residual with bacterial kill must be emphasized. The MPN of the effluent, which is directly related to the water quality standards requirements, should be the final and primary standard and the chlorine residual should be considered an operating standard valid only to the extent verified by the coliform quality of the effluent.
The following are critical factors affecting wastewater disinfection.
Mixing : It is imperative that the product and the wastewater be instantaneously and completely flash mixed to assure reaction with every chemically active soluble and particulate component of the wastewater.
Contacting : Upon flash mixing, the flow through the system must be maintained.
Dosage / Residual Control : Successful disinfection is extremely dependent on response to fluctuating chlorine demand to maintain a predetermined, desirable chlorine level. Secondary effluent should contain 0.2. to 1.00 ppm chlorine residual after 15 to 30 minute contact time. A reasonable average of residual chlorine is 0.5 ppm.
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| SEWAGE AND WASTEWATER TREATMENT
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EFFLUENT SLIME CONTROL - Apply a 100 to 1000 ppm available chlorine solution at a location which will allow complete mixing. Prepare this solution by mixing 2 to 20 oz. of this product with 100 gallons of water. Once control is evident, apply a 15 ppm available chlorine solution. Prepare this solution by mixing 0.3 oz. of this product with 100 gallons of water.
FILTER BEDS - SLIME CONTROL : Remove filter from service, drain to a depth of 1 ft. above filter sand, and add 16 oz. of product per 20 sq. ft. evenly over the surface. Wait 30 minutes before draining to a level that even with the top of the filter. Wait for 4 to 6 hours before completely draining and backwashing filter.
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