November 2022
By Katlego Baakile
katlego@hydrocon.org

Fast Facts

CLEANING, SEALING & DISINFECTION OF WATER STORAGE FACILITIES

Water Tank Cleaning, Source: https://envirocare.ae/water-tank-cleaning.php

Over time, potable water storage facilities and tanks accumulate silt, biological pollutants, impurities, chemical sediments, etc. Accumulation of these pollutants creates a health hazard that can be resolved by cleaning the water storage facilities. Hydrocon Green has over the years successfully cleaned, maintained, sealed, and disinfected water storage facilities around the country.

Water tank cleaning and chlorination is an important part of water hygiene. Disinfection is done with Sodium Hypochlorite solution to recommended (BOS 32:2015 Drinking Water Standards) concentration levels for potable water distribution.

We recommend cleaning water tanks once a year.

Dam Levels

Dam Levels as of 15.11.2022

Dam	Current Level (%) 15.11.22	Last year’s level (%) 15.11.21	Months of Supply without Inflow
Dikgatlhong	80,5	84.0	24
Molatedi	39.0	41.1	45
Gaborone	58.3	47.0	20
Letsibogo	85.1	79.3	21
Thune	66.1	80.7	39
Shashe	84.0	74.9	21
Ntimbale	94.5	74.8	15
Lotsane	56.3	69.3	20
Bokaa	101	65.7	13
Nnywane	101	81.1	13

Total Dam Capacities

Projects

SOLAR – THERMAL WATER HEATING SYSTEM PROJECT

Solar thermal water heating system provides hot water as demanded by the user. Thermal systems utilize solar irradiation to heat up water, usually using a heat exchange media in the indirect system. Operation and circulation of cold and hot water can be pressurized with a pump or utilisation of thermosyphon properties of water.

Indirect Thermosyphon system with two plate solar collectors
Source: https://www.energy.gov/energysaver/solar-water-heaters

Hydrocon Green projects team is currently active on-site completing the installation of an indirect thermosyphon water heating system that will provide the client with adequate hot water on demand. Daily hot water demand for the project is estimated at around 4000Liters. The project is in its final stages of implementation and completion is expected before the end of the year 2022.