Naturally Treating Water

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Case Study: Mamba Cement (South Africa)

Case Details:

  • Sector: Building materials
  • Purpose: Scaling in the heat exchanger
  • Installation: 6X(4X4) UET-STD Reactors
  • Customer: Mamba Cement

UET's reputation has been sealed in concrete

mamba

Project field:  Cooling tower water treatment     Project Start Date:  2017
Mamba is a factory that generates its own electricity and produces cement.
COOLING TOWER SYSTEM

2 X Cooling towers of 2000 m3/h

 UET REACTOR SIZING

6X(4X4) UET-STD Reactors

 MAKE UP SOURCE

Borehole and river water

 mamba 2
The UET unit treating 2 cooling towers on site

 

The heat exchanger prior to UET treatment.   The tubes were constantly full of scale, which prevented the ability of the water in the cooling tower to cool the tubes.  mamba he 1
The heat exchanger after UET treatment was found clean from all previous sedimentation.  mamba he 2

 

UET’s reactors in operationmamba 3

UET rectors full of scale before cleaning

 

 mamba 4
UET reactors after scale was removed  mamba 5

 

IMPACT

WATER SAVINGS

The cycles of concentration rose from 1.7 before the UET startup to 5.

Blowdown has been reduced from 2583 liters/hour    to 28 liters/hour – an ALMOST 100% REDUCTION.

CHEMICAL ADDITIVES

100% chemical-free solution

SCALE REMOVAL

Total amount of wet scale collected during the last cleaning: 9 kg/reactor.  No indications of scaling in the heat exchanger.

BIO-CONTAMINATION CONTROL

Free chlorine has been detected and bio-contamination is under control.

MINERAL BALANCE AND SILICA REMOVAL

The water analysis data were obtained in reports from Mamba. A significant reduction in the silica, alkalinity and total hardness values of the tower basin was observed, which proves the precipitation of excess minerals in the reactors.

 

Mamba Cement (South Africa)

Savings Table

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