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Farmland water pollution control and reuse system and operation method thereof

A technology of farmland water pollution and operation methods, which is applied in the field of environmental protection and water body restoration, can solve the problems of large farmland water usage, low reuse rate, nitrogen and phosphorus loss pollution, etc., achieves reduction of land occupation and engineering investment, convenient implementation, Flexible effects

Inactive Publication Date: 2019-02-12
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] Purpose of the invention: In view of the outstanding problems of large amount of farmland water usage, low reuse rate and serious nitrogen and phosphorus loss pollution, the present invention provides a farmland water pollution control system and its control method

Method used

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  • Farmland water pollution control and reuse system and operation method thereof
  • Farmland water pollution control and reuse system and operation method thereof
  • Farmland water pollution control and reuse system and operation method thereof

Examples

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Embodiment 1

[0088] A certain area covers a total area of ​​10 mu, with a length of 120m and a width of 55.6m. Rice is planted, of which the farmland area accounts for 91.6% of the total area, with a length of 53.6m and a width of 2m; primary purification system 2 accounts for 3.4% of the total area, with a length of 114m and a width of 2.0m, the slope of the drainage direction is 3 water; the purification and reuse system 3 occupies 5% of the farmland area, with a length of 55.6m and a width of 6.0m.

[0089] The water inlet system 1 includes a water inlet pipe on which a water inlet valve is arranged. The primary purification system 2 includes 2 drainage ditches 2-1, 114m in length and 2.0m in width; 2 movable control weir plates 2-2, 1m in width; the carrier ball 2-3 is 30m in size 3 , and its specific surface area ranges from 380-800m 2 / m 3 , with a density of 0.93g / cm 3 , porosity > 99%, biosphere purification ball diameter is 5cm; purification and recycling system 3 includes puri...

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Abstract

The invention discloses a farmland water pollution control and reuse system and an operation method thereof. The system comprises a water inlet system, a primary purifying system, a purifying and reusing system and a farmland which are sequentially connected, wherein an output end of the purifying and reusing system is connected with an input end of the water inlet system. The water inlet system is arranged on one side of the farmland, and the purifying and reusing system and the water inlet system are oppositely arranged; the primary purifying system is arranged on the two sides of the farmland. A water resource enters the farmland through the water inlet system for crop irrigation utilization, and at a crop growth stage, chemical fertilizer and pesticide are applied; an unused agricultural non-point source flows into the primary purifying system for purification; effluent enters the purifying and reusing system, and the agricultural non-point source is further purified in a purifyingditch, and flows back to the water inlet system for repeated use. According to the farmland water pollution control and reuse system and the operation method thereof, the farmland water reuse rate ishigh, nitrogen and phosphorus non-point source loss is little, nitrogen and phosphorus in farmland water are fully used, and pollution discharge is reduced. Investment is little, and the running costis low; a technology is simple to operate, a treatment effect is good, and ecological environment benefits are good.

Description

technical field [0001] The invention belongs to the fields of environmental protection and water restoration, and in particular relates to a farmland water pollution control system and a control method thereof. Background technique [0002] With the rapid development of our country's social economy, the rational development and efficient utilization of agricultural land resources are the main problems that my country's agricultural production is currently facing. The extensive use of pesticides and fertilizers has become an important way to increase agricultural production, and the low utilization rate has caused agricultural non-point source pollution to become the main problem facing agricultural production. A large amount of pesticides and chemical fertilizers that enter the atmosphere and water cycle and are not absorbed and utilized by crops, and a small part remain on the land, and a large amount of resources are wasted. Therefore, the environmental pollution problems ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32C02F3/00
CPCC02F3/00C02F3/32
Inventor 沈晓笑马吴成邵孝侯
Owner HOHAI UNIV
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