Water Tanks Supporting Rain Water Harvesting

By Author: batx thomas
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Rainwater harvesting is an ancient technique enjoying a revival in popularity due to the natural quality of rainwater. As rainwater is valued for its purity and softness people are more interested in utilising rain water than treated water.

The benefits of using rain water are many. It has a nearly neutral pH, and is free from disinfection by-products, salts, minerals, and other natural and man-made contaminants. Plants thrive under irrigation with stored rainwater. Appliances last longer when washed in water free from the corrosive or scale effects of hard water. Users with potable systems prefer the superior taste and cleansing properties of rainwater.

The advantages of rainwater harvesting are numerous; firstly the water is free of cost the only cost is for collection and use. Secondly, the end use of harvested water is located close to the source which eliminates the need for complex and costly distribution systems. Thirdly, rainwater provides a water source when groundwater is unavailable, or it can augment limited groundwater supplies. Fourthly, rain water is equal to zero hardness which helps prevent ...
... scale on appliances, extending their use, thus eliminating the need for a water softener.
Fifthly, rainwater is sodium-free, important for persons on low-sodium diets. Sixthly, rainwater is superior for landscape irrigation and reduces flow to storm water drains and also reduces non-point source pollution. Most of all rainwater harvesting reduces the consumer utility bill.

Perhaps one of the most interesting aspects of rainwater harvesting is learning about the methods of capture, storage, and use of this natural resource at the place it occurs in water tanks. This natural synergy excludes at least a portion of water use from the water distribution infrastructure: the centralized treatment facility, storage structures, pumps, mains, and laterals.

Rainwater harvesting can reduce the volume of storm water, thereby lessening the impact on erosion and decreasing the load on storm sewers. Decreasing storm water volume also helps keep potential storm water pollutants, such as pesticides, fertilizers, and petroleum products, out of rivers and groundwater.

The user needs to know the responsibility of utilising this scheme along with knowing its benefits. Along with the independence enjoyed in rainwater harvesting systems there is an inherent responsibility of operation and maintenance.

For all systems, this responsibility includes purging the first flush system, regularly cleaning roof washers and tanks, maintaining pumps, and filtering water. For portable systems, responsibilities include all of the above, and the owner must replace cartridge filters and maintain disinfection equipment on schedule, arrange to have water tested, and monitor tank levels.

Rainwater harvesting, in its essence, is the collection, conveyance, and storage of rainwater in safe water tanks. The consumer can also opt for plastic tank that will suit the purpose. The scope, method, technologies, system complexity, purpose, and end use vary from rain barrels for garden irrigation in urban areas, to large-scale collection of rainwater for all domestic uses.

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