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Daftech Engineers Private Limited

DAF Clarifier

DAF Clarifier, an industrial wastewater treatment plant, finds applications in pulp and paper mills, recycled fibre, potable water, food processing, dairies, textile mills, municipalities and others. Total Suspended Solids removal to below 100 ppm of filterable solids and thickened sludge consistency of 2 – 4% are indicative of the efficient operation of these industrial water treatment plants.

Specifications:

  • Type : Circular, Rectangular
  • Floatcell Sizes : 1219 mm – 16800 mm diameter
  • Flow rates : 5 m3/hr – 1250 m3/hr

Industry:

  • Sugar Industry
  • Dairy Industry
  • Pharmaceutical Industry
  • Distillery
  • Paper Mills
  • Leather industry
  • Chemical Petroleum Industry
  • Automobile
  • Slaughter House


Wastewater Clarifier

Since the year of our establishment in 2001 we have installed over 100 units in almost all continents across the world: North America, South America, Europe, Africa, Middle East, Far East besides India.

Specifications:

  • Driving Principle : Centre Driven
  • Diameter : 9000-10000 mm
  • Max. Capacity Excluding Recycle : 5 m3/hr. - 1250 m3/hr.




Dissolved Air Flotation Clarifier

DAFTECH designs and manufactures a complete line of circular DAF Clarifiers. Flotation has been widely used for industrial wastewater treatment since 1920. The typical industrial wastes treated by flotation are paper mill backwater, oily wastewater as well as effluents from milk processing, textile processing, tanneries and a variety of other industries.

Floatcell:

  • Floatcels are circular in shape, ranging in diameter from 1.2 m to 16.8 m and flow rate from 5 m3/hr. to 1247 m3/hr. and a liquid depth of only 0.65 m.

Size Range of DAF Clarifier:

  • DAF Clarifiers are available to process wastewater flows of 5 m3/hr to 1250 m3/hr. utilizing a shallow circular tank approximately 65 cm deep. Tank diameter ranges from 1.2 m to 16.8 m.

Construction of DAF Clarifier:

  • The standard Float cell features a polyurethene-coated carbon steel circular tank, tank bottom supports,gifs/bogota1.jpg side wall stiffeners, heavy duty tank rim, top bridge and catwalks. Units can be fabricated entirely of stainless steel on request. All clarifier feature a standard sludge cone, clear water separation wall, Air Mixing Tube (AMT), central rotary joint, sludge scoop and top bridge with attached assembly.
  • Our DAF Clarifiers of 5 m3/hr to 1250 m3/hr. are fabricated in such a way that even the largest unit can be transported in a standard container whereas the smallest DAF Clarifier of 5 m3/hr. is one singe tank. In higher sizes the DAF tank is constructed in segments and assembled at site with gaskets and fasteners.

Specifications:

  • Type : Circular
  • Foatcell Sizes : 1.2 m to 16. 8 m.

White Water Clarification Plant

One of the classical applications of DAF is fibre recovery from the white water or backwater of paper mills. Floatcells recover valuable fibre and clarified water for reuse. The system amortizes itself in a matter of 8 to 9 months going by our experience.

Specifications:

  • Diameter : 1.2 m to 16.8 m.
  • TSS handled : 1000 to 3000 ppm generally.
  • Outlet TSS: 100 ppm



Dissolved Air Flotation

Dissolved Air Flotation process consists of super saturation of partial flow of clarified water from the system with air from a compressor. The partial flow of approximately 1/3rd of the intake flow is pressurized through a pressure pump to about 6.5 bar which then enters the Air Mixing Tube where it is saturated with air under pressure. The super saturated water steam is then mixed with the waste stream after pressure release. The sudden release of pressure from the saturated stream generates millions of microscopicair bubbles which attach themselves to the contaminants of oil and suspended and colloidal solids in the wastewater, thereby changing their buoyancy and floating them to the surface of the water from where the sludge is skimmed and removed from the water.

Specifications:

  • Retention time in AMT : 10 seconds
  • Diameter of AMT : 150 mm to 450 mm
  • Type : Circular
  • Foatcell Sizes : 1.2 m to 16. 8 m.

Circular DAF System

DAFTECH designs and manufactures a complete line of Circular DAF units.

Application:

  • Fibre Recovery in Pulp and Paper Mills
  • Ballast Water
  • Carbon Black production
  • Solids recovery
  • Fish processing
  • Soap industry
  • Municipalities
  • Meat Processing and packing
  • Tanneries
  • General Food manufacturing
  • Secondary clarification
  • Sludge thickening
  • Snack Food production
  • Vegetable oil processing
  • Dairies
  • Rendering plants
  • Laundries
  • Breweries
  • Canning Water
  • Water recycling

Specifications:

  • Diameter : 1219 mm to 16800 mm
  • Maximum Capacity excluding recycle : 1250 m3/hr.
  • Tank diameter ranges : 1.2 m to 16.8 m.

Circular Dissolved Air Flotation (DAF) Clarifier

Dissolved Air Flotation Clarifier:

DAFTECH designs and manufactures a complete line of circular DAF (Dissolved Air Flotation) Clarifiers. Flotation has been widely used for industrial wastewater treatment. The typical industrial wastes treated by flotation are paper mill back water, oily wastewater as well as effluents from, dairy, textile processing, tanneries and others.

Specifications:

  • Diameter : 1219 mm to 16800 mm
  • Capacity excluding recycle : 1250 m3/hr.
  • Tank diameter ranges : 1.2 m to 16.8 m.

DAF Clarifier With 3 Minutes Retention

Circular DAF Clarifiers of our design has the following advantages compared to conventional rectangular DAF Clarifiers.

Rectangular DAF Clarifiers are generally fixed installations in concrete whereas circular DAF clarifiers are fabricated in steel.

In rectangular DAF Clarifier the sludge consistency obtainable is limited to 3% whereas in circular DAF of ours it is possible to go even up to 4%.

A rectangular DAF clarifier has no inbuilt parts for bottom cleaning whereas the circular DAF of our design has a self cleaning system at the bottom. This eliminates down time for cleaning.

Generally speaking rectangular DAF clarifiers handle 3 m3/min whereas circular DAF clarifier of ours can handle up to 20 m3/min.

Rectangular DAF clarifier has specific clarification capacity of 80 l/min./m2 whereas in our clarifier one could go up to 160 l/min./m2.

Compared to the retention time of 20 min. in a rectangular DAF clarifier our circular DAF has a retention as low as 3 mins. which makes the unit exceptionally compact.

Specifications:

  • Diameter : 1219 mm to 16800 mm
  • Maximum Capacity excluding recycle : 1250 m3/hr.
  • Tank diameter ranges : 1.2 m to 16.8 m.



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