Method for treating and utilizing rain water in block

Abstract

The invention provides a method for treating and utilizing rain water in residential quarters, when it rains, the pavement water enters a dual purpose settlement / water storage well through a filtration blind ditch connected with the inspection wells, the roofing rain-water flows through filter strainer, infiltration trench and enters the settlement / water storage well, when a submerged pump is opened, the rain-water enters green land through the drawing off of the sprinkling irrigation system, and the cleaned rain-water is carried into soil.

Description

technical field [0001] The invention relates to the technical field of non-point source pollution (non-point source pollution) treatment, in particular to a novel method for treating and utilizing rainwater in residential areas. Background technique [0002] At present, domestic urban non-point source pollution (non-point source pollution) source treatment methods mainly focus on the four aspects of rainwater infiltration promotion, rainwater landscape utilization, rainwater recharge, and rainwater reuse, including the initial runoff of rainwater. Infiltration technology, filtration technology, storage technology, pollutant degradation technology, disinfection technology, etc. [0003] Rainwater infiltration promotion: This method is a simple and economical method for reducing rainwater runoff. Specifically, it can improve the soil and construct green spaces, build infiltration ditches and infiltration pipes, and transform the impervious ground into p...

AI Technical Summary

Problems solved by technology

As for rainwater recharge, it has certain practical value in northern cities or cities with excessive groundwater exploitation, but in order to avoid polluting groundwater, the recharge water quality is very high, and the corresponding treatment costs are also very high, so it is rarely used at present

For rainwater reuse, the existing technology is difficult to popularize and apply under the current national conditions. The main reason is that the price of water is low and the cost of treatment engineering is too high, so reuse has no economic value.

For example, a rainwater reuse system built in a residential area in Beijing cost more than 400,000 yuan. It takes ten years to recover the static investment. In addition, the maintenance is cumbersome and the operating cost is high. The operating cost per ton of treated water is 0.4 yuan. Even if it is completed , it is also difficult to maintain

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