Ash Slurry Disposal System

Pumping at higher concentration, hence
low water consumption

ASHS

Lean Slurry Disposal System and Ash Water Recovery System

Lean Slurry Disposal System and Ash Water Recovery System have been conventionally used for disposal of ash slurry in dilute form, generated at various power plants and are still in demand. Macawber Beekay offers such systems which comprise of centrifugal slurry pumps for disposal and clarifloculator / tube settler for recovery of the ash water from slurry pond.

Lean Slurry Disposal
Lean Slurry Disposal
  • Lean Slurry Disposal System and Ash Water Recovery System have been conventionally used for disposal of ash slurry in dilute form, generated at various power plants and are still in demand. Macawber Beekay offers such systems which comprise of centrifugal slurry pumps for disposal and clarifloculator / tube settler for recovery of the ash water from slurry pond.
  • Ash slurry transportation pipes from slurry pumps upto ash dyke including garlanding of the dyke.
  • Valves at suction and discharge of ash slurry transportation pumps.
  • Ash slurry sump with intake valves, ACI liners, jetting nozzles, etc.
  • Drainage pumps with piping, valves & fittings.

High Concentration
Slurry Disposal System

Conventional Lean Slurry Disposal System and Ash Water Recovery System have limitations/disadvantages on account of higher amount of water wastage/contamination, ground water pollution, potential threat of ash pond collapse, vast land required for ash dykes, higher costs for ash pond construction and higher power consumption. These limitations have led to the adoption of new environment friendly ash disposal technologies like High Concentration Slurry Disposal (HCSD) Systems. Macawber Beekay has been a pioneer in adopting the best of this technology by commissioning HCSD System for a combination of fly ash and bottom ash, a first of its kind in India.

HCSD System comprises of controlled and monitored feeding system for fly ash & bottom ash followed by a homogenous mixing in an adequately designed Agitator Retention Tank (ART) and further pumping to disposal area through the piston diaphragm / hydraulic piston pumps. HCSD system operates on a higher concentration of about 60%, that’s why the water consumption is drastically reduced and literally no water is released at the disposal area. The ash slurry disposal takes placed based on a sloped disposal concept thereby it spreads and solidifies, leaving hardly any residual ash to fly off. The system has unique advantages of less land area requirement, lesser leaches in the disposal area, low velocity system, lesser size pipes and less power consumption.

Proper monitoring of the slurry properties is the key to success of the system. HCSD pump transports the high concentrated slurry from the ART to the ash disposal area through carbon steel pipelines. These pumps have mechanism for capacity variation depending on the characteristics of the slurry. De-blocking facility is also considered either by the HCSD pump itself or through a separate water pump. Pigging system is also provided for cleaning of the pipeline. MBL’s HCSD systems are installed upto a capacity of 315 M3/Hr and for distance upto 17 KMs.

KEY ADVANTAGES OF HCSD SYSTEM

  • Ash spreads in layers enabling vertical filling, hence land requirement is reduced.
  • Pumping at higher concentration, hence low water consumption.
  • Slurry flow rate is drastically reduced, hence lower pipeline sizes.
  • Literally no water releases out, hence no need for water retaining walls or recovery system in pond area.
  • Reduced leaches at the ash disposal area.
  • Lower operating power consumption.
  • Lower velocity, hence longer life for pipe line.

AWARDS & ACHIEVEMENTS

You will find yourself working in a true partnership that results in an incredible experience, & an end product that is the best.

MACAWBER BEEKAY

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