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Fresh water supply method for rainwater and groundwater resource

A supply method and water resource technology, applied in climate change adaptation, water saving, water supply devices, etc., can solve problems such as uneven distribution of annual rainfall, prevent floods, solve serious disconnection between water demand and precipitation, Significant ecological effect

Inactive Publication Date: 2004-09-15
安逢龙
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The distribution of annual rainfall is very uneven

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A district of a city in a certain coastal plain area covers an area of ​​about 1,000 square kilometers (1 billion square meters). In summer, there are two concentrated rainfalls, one for 100 mm and the other for 200 mm. The total rainfall in the region was 300 million cubic meters. 10% seeps to the ground surface, and 30% rainwater is available relatively clean rainwater, of which 10% (9 million cubic meters) are easy to control and store. Find field grasslands where 1% concentrated sea water backflow is not serious, build a simple water pond, and drill more than 100 shallow wells with a depth of 2-50m, with a diameter of 20-300mm and a width of 20-500mm at the bottom of the well. After the rainwater is filtered through a simple sand filter, because the water injection well is under the filter and the filter is below the surface of the rainwater, there is no need to pump it, and the water is directly injected into groundwater through the water injection well, with a fil...

Embodiment 2

[0045] A city in a coastal plain area covers an area of ​​about 10,000 square kilometers (10 billion square meters), and there are two concentrated rainfalls in summer, one for 100 mm and the other for 200 mm. The total rainfall in the region was 3 billion cubic meters. Find areas near urban roads and intercity highways where seawater intrusion is not serious, build simple water ponds, and drill more than 2,000 wells with a depth of 2-50 meters, a diameter of 100-300mm, a well depth of 10-50m, and a well bottom width of 200-2000mm shallow well. After the rainwater is filtered by a simple sand filter, it is directly injected into the groundwater through the water injection well. Because the water inlet of the sand filter is below the surface of the rainwater, and the water injection well is below the filter, there is no need for a pump to rely on the gravity of the water and the pressure of the water column in the injection well to inject and filter. The filter area of ​​the f...

Embodiment 3

[0047] A certain coastal plain covers an area of ​​about 20,000 square kilometers (20 billion square meters), and there are three concentrated rainfalls in summer, each of 100 mm, 200 mm, and 150 mm. The total rainfall in the region was 9 billion cubic meters. Find areas where seawater intrusion is not serious, concentrate on building simple water ponds, and drill more than 4,000 shallow wells with a depth of 10-50 meters, a diameter of 20-500mm, and a width of 200-5000mm at the bottom of the well. After the rainwater is filtered by a simple sand filter, the accuracy of the sand filter is 0.005-0.5 mm, and the filtration area of ​​the sand filter is 0.25-16 square meters. The water is directly injected into the groundwater through the water injection well. The average water injection in each well is 300 tons, and the average annual reinjection 1.2 million tons of clean rainwater. However, the naturally collected rainwater is insufficient, and it is necessary to purchase relat...

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PUM

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Abstract

The invention refers to plain water supplying method for rain water and ground water resources; it selects a impounded area, and rig flooding well from one to one hundred of millions on the area, there sets a filter at the water entrance of the well; when meeting with moderate rain or heavy rain, storm rainfall or supergiant storm rainfall, the rain water is poured into the well through the filter directly, and afflux into ground water, thus the water impounded area will has rich ground water. The rain water turns into ground water, and the ground water is turned into plain water. The ground water can be used for edible water through simple process, or uses hyperfiltration technology to decrease the salinity of ground water. And it can supply plain water in drought years. The cost of ground is decreased, and the price of ground water can be decreased from 5-10 yuan per ton to 2-4 yuan per ton.

Description

technical field [0001] The present invention provides a method for supplying fresh water, and in particular provides a method for stably supplying fresh water by utilizing rainwater and groundwater as resources. Background technique [0002] According to the statistics of the United Nations, one-third of the countries and regions in the world are short of fresh water, and about 30% of them are short of fresh water. And this situation is becoming more and more serious with the development of economy and society. Available fresh water resources are essential for socio-economic development. The limitation of fresh water supply directly restricts the development of many regions and countries in the world to varying degrees. According to the survey, my country's current groundwater utilization accounts for 16% of the national water resources utilization. There are more than 1,400 centralized water supply sources that have been surveyed and evaluated, of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E03B3/06E03B3/10E03B3/18
CPCY02A10/30Y02A20/00
Inventor 安逢龙
Owner 安逢龙
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