Sewage treatment system and sewage treatment method

A sewage and sewage purification technology, applied in the direction of biological water/sewage treatment, water/sludge/sewage treatment, sustainable biological treatment, etc., can solve the problem of insufficient purification of biological purification ability and the law of growth and decline, and the lack of subsequent use of plants. Problems such as large seasonal differences in purification ability, etc., to avoid the decline of biological purification ability, good economic benefits, and low cost

Inactive Publication Date: 2010-08-11
苏州市阳澄湖现代农业发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There are many research reports on the use of aquatic organisms, especially aquatic plants, to purify water quality. However, due to insufficient research on the purification ability and

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] For a village with a population of 30 households, there is a river with a width of 5m and a depth of 2m passing in front of the village, carrying the domestic sewage of the whole village, and the water flow is 0.4m / min. Plant water bamboo at the shore within 200m downstream of the sewage inlet, hydroponic water celery within 400m downstream of the sewage inlet, plant Elodea in the 400-800m river section, and plant bitter grass in the 800-1400m river section, In the 1400-2000m river section, weeds are planted, and 300kg of snails and 200kg of mussels are stocked. The water quality is no less than that of the upstream of this village.

Embodiment 2

[0037] For a village with a population of 30 households, there is a river with a width of 5m and a depth of 4m passing through the village, carrying the domestic sewage of the whole village, and the water flow is less than 0.7m / min. Plant water bamboo at the shore within 300m downstream of the sewage inlet, hydroponic water celery within 800m downstream of the sewage inlet, plant Elodea in the 800-1600m river section, and plant bitter grass in the 1600-3000m river section, In the 3000-4000m river section, weeds are planted, and 600kg snails and 400kg river mussels are stocked. The water quality is no less than that of the upstream of this village.

Embodiment 3

[0039] For a village with a population of 30 households, a river with a width of 3m and a depth of 1m passes in front of the village, carrying the domestic sewage of the whole village, and the water flow is less than 0.4m / min. Plant water bamboo at the shore within 300m downstream of the sewage inlet, hydroponic water celery within 800m downstream of the sewage inlet, plant Elodea in the 800-1600m river section, and plant bitter grass in the 1600-3000m river section, In the 3000-4500m river section, weeds are planted, and 600kg snails and 400kg river mussels are stocked. The water quality is no less than that of the upstream of this village.

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PUM

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Abstract

The invention belongs to the field of sewage treatment, and discloses a sewage purification system. The sewage purification system comprises a watercourse, wherein the watercourse is at least 1000 meters long, at least 3 meters wide and 1-4 meters deep. An emerging plant area, a water-planted commercial crop area and a submerged plant area are planted along the watercourse in the flow direction of the sewage, wherein the emerging plant can be cane shoot or lotus root; the water-planted commercial crop can be water-planted cress, leaf lettuce, lettuce, water convolvulus, ryegrass or the like in spring and summer, or water-planted green vegetable, shallot or the like in autumn and winter; the sunken plant can be waterweed, Potamogeton crispus L or eel grass; and at least 100kg of spiral shells and at least 100kg of freshwater mussels are stocked in the watercourse. By planting the emerging plant area, the water-planted commercial crop area and the submerged plant area in the watercourse of the sewage treatment system and simultaneously stocking the spiral shells and the freshwater mussel filter-feeding benthic species, the invention intensifies the wetland ecosystem restoration function, can effectively improve the water quality, is especially applicable to the purification of rural domestic sewage, and can be used as the matching technology for new countryside construction.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and relates to a sewage treatment system and a sewage treatment method, in particular to an ecological purification method for river sewage. Background technique [0002] According to the water quality evaluation conducted by relevant departments on 134,600 kilometers of rivers and 322 reservoirs across the country, nearly 40% of the river water has been seriously polluted. Among the 412 monitoring sections of the country's seven major water systems, 27.9% of the water is inferior to Class V, that is, nearly 1 / 3 of the water used for agricultural irrigation is unqualified, and 90% of the urban groundwater has been polluted. In some areas and river basins, water pollution has clearly shown a trend of extending from tributaries to main streams, from cities to rural areas, from surface to underground, and from land to ocean (Li Guoqiang, 2006). [0003] There are many reasons for water pollution, in...

Claims

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Application Information

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IPC IPC(8): C02F3/32
CPCY02A40/22Y02W10/10
Inventor 蔡春芳谷孝鸿叶元土陈立侨徐升宝沈建明龚宏伟施陈江
Owner 苏州市阳澄湖现代农业发展有限公司
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