Rain water
Collecting
Territory of water collection is the area which is specially prepared for rain water collecting.
The best in quality and containing fewer pollutants is considered water, which is collected from the roof of the building. Preference is given to the roofs, made of inert materials with low levels of allocation of particles and harmful substances (clay tiles, slate, cement). It is categorically unacceptable to collect water from the old roof, where were used bad materials containing asbestos or lead.
Water from gutters through the drainage pipes goes to the underground tank. Then installed in the upstream pipe tank filter mechanically cleans the water from contamination, and clean water transferes into the reservoir. Excess of water, which some times can reach the top of reservoir, flows away.
The system of transporting water - is overflow complex, through which water which was collected from the roof is transported to the treatment site and then to storage tank.
It is also very important to pay attention to materials, from which the plums are done. It is considered to be unfit old spillway type, made of lead or containing lead in any proportion. Modern materials for weirs (PVC, galvanized steel, etc.) do not pose any problems, except, perhaps, only copper.
Cleaning
It is easy to imagine that the water will be polluted with all that would accumulate on the roof. Although the methodology established in Europe, this is not explicitly provides the first rain water is recommended to fully drain into the sewage system because the nature of the initial flushing this water goes very dirty. It is not difficult to organize, with the help of a special device called a "roof washer" (eng. - washer roof), or - even easier -- through the vertical pipes relevant section (in the calculation are typically 0.38 m 2 for every 300 m2 of catchment) embedded in the spillway and equipped at the bottom drain valve and valve removal of solid deposits.
Obviously, the degree of after-treatment is determined mainly by the appointment of the water. If its application is limited to merely supplement resources, non-drinkable water, the first and most simple cleaning is carried out by the installation of weirs krupnoyacheistyh filter nets late the largest solid particles (leaves, etc.). The smaller nets are installed at the bottom of weirs that the treatment site does not fall prey material usually accumulate in drain pipes.
Storage
The reservoir is one of the most costly components of the system and, therefore, should carefully consider his or her choice. With regard to of the reservoir, it can be set as the open air, and soil.
In the former case, savings in excavation and maintenance of the reservoir substantially easier. But vryty in the soil reservoir of natural
way cool, that much slows growth of algae and bacteria, which, in contrast, contributes to heating the water in the open sun.
For this purpose, suitable shells of concrete, galvanized steel, polyethylene, fiberglass, etc., ie, of the materials does not change the properties of over time and are compatible with water quality accruing.
For proper operation of the system suggests the appropriate controls and monitoring, performed as a single unit and provide correct allocation of water from accumulating vessel and its integration with water from the aqueduct.
Given the nature of the circulating liquid (purified rainwater from accumulating reservoir - it is almost distilled water, and a water particularly aggressive towards metallic materials), pumping unit should be made of stainless steel or other resistant aggressive effects of the material.
Using
Priority:
Inside the house - toilet cleaning, outdoor data system used for watering the lawn in spring and autumn, washing cars, cleaning the area around homes, etc.
Low:
If you live far from the countryside, where a number is not hazardous enterprises, as well as you have the opportunity to establish a good system of water treatment, the area use of rainwater can be considerably enhanced by adding showers, washing machines and, more rarely - dishwashing. The use of rainwater nutritional purposes in any event is not recommended.
Conclusion
If we take into account that more than 50% of average daily water needs - and this is 132l per person - is nepitevaya part that can be replace rain water, you can imagine that the technical system for collecting rainfall, sold individually or even narrow collective use, offer significant savings, with the initial investment, taking into account available on the market proposals are very modest.
