Ecological engineering purification system suitable for micro-polluted source water

A technology of ecological engineering and purification system, applied in biological water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. The effect of reducing chemical consumption and reducing turbidity

Inactive Publication Date: 2018-09-18
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Starting from improving the raw water quality of water sources, the present invention seeks to design an ecological engineering purification system suitable for slightly polluted source water, and solves the problem that some indicators of slightly polluted raw water (such as ammonia nitrogen, oxygen consumption, etc.) exceed the standard, in order to ensure the safety of drinking water provide technical support

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Embodiment 1

[0021] figure 1 It is a process flow diagram of an ecological engineering purification system applicable to slightly polluted source water of the present invention, figure 2 It is a structural schematic diagram of an ecological engineering purification system suitable for slightly polluted source water of the present invention. Such as figure 1 and figure 2 As shown, the ecological engineering purification system suitable for slightly polluted source water is provided with a surface flow wetland 1, a submerged plant pond 2 and an ecological pond 3. The surface flow wetland 1, the submerged plant pond 2 and the ecological pond 3 are connected by pipelines, and the water levels of the three units are lowered in turn.

[0022] First, the slightly polluted source water is lifted by the pump or flows by itself to the water distribution area 4 at the front end of the surface flow wetland 1, and the raw water entering the water distribution area 4 flows into the wet area 10. The...

Embodiment 2

[0026] The source water of a certain river course is slightly polluted. The various water quality indicators are: turbidity 35 ~ 70 NTU, oxygen consumption 6 ~ 7 mg / L, ammonia nitrogen 0.5 ~ 1.0 mg / L, and a kind of water source suitable for slightly polluted water source is used in Example 1. The water is treated by the ecological engineering purification system:

[0027] Slightly polluted source water is pumped to the surface flow wetland 1, the surface flow wetland 1 is 5.15m long x 0.8m wide x 0.8m high, of which the water distribution area 4 is 0.15 m long, and the water distribution area 4 realizes uniform water distribution; the surface flow wetland 1 The substrate is yellow sand with a particle size of less than 2 mm. The first half of the area is planted with Zizania angustifolia, and the rear half area is planted with Cattail angustifolia, with a planting density of 20 plants / m. 2 The water depth of the surface flow wetland 1 is 0.3m, and the hydraulic retention time ...

Embodiment 3

[0030] The source water of a certain river course is slightly polluted. The various water quality indicators are: turbidity 40 ~ 80 NTU, oxygen consumption 5 ~ 6 mg / L, ammonia nitrogen 0.6 ~ 0.9 mg / L, using a kind of method in Example 1 suitable for slightly polluted water sources The water is treated by the ecological engineering purification system:

[0031] Slightly polluted source water is pumped to the surface flow wetland 1, the surface flow wetland 1 is 5.15m long x 0.8m wide x 0.8m high, of which the water distribution area 4 is 0.15 m long, and the water distribution area 4 realizes uniform water distribution; the surface flow wetland 1 The substrate is yellow sand with a particle size of less than 2 mm, and watercress and cold-resistant iris are planted at a planting density of 25 plants / m 2 The water depth of surface flow wetland 1 is 0.4m, and the hydraulic retention time is 1 day; the raw water enters the submerged plant pond 2 after passing through the surface fl...

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Abstract

The invention relates to an ecological engineering purification system suitable for micro-polluted source water. The system is composed of surface flow wetland, a submerged plant pond and an ecological pond in sequence, and the surface flow wetland, the submerged plant pond and the ecological pond sequentially communicate with one another through a pipeline; the surface flow wetland comprises a water distribution area and a wetland area, and the wetland area sequentially comprises a yellow-sand substrate and emerged plants in a longitudinal direction; the submerged plant pond sequentially comprises a soil substrate and submerged plants in the longitudinal direction; and the ecological pond sequentially comprises a soil substrate and submerged plants in the longitudinal direction, and filtering-feeding fish are thrown into the ecological pond. The ecological engineering purification system suitable for the micro-polluted source water provided by the invention can solve the problem thatraw water of drinking water has high turbidity and ammonia nitrogen and oxygen consumption exceed a standard, and effectively improve water quality of micro-polluted raw water; and the system has theadvantages of a simple process, low costs and easy maintenance, and can produce good social, economic and ecological benefits.

Description

technical field [0001] The invention belongs to the technical field of drinking water source water pretreatment, and relates to an ecological engineering purification system suitable for slightly polluted source water. Background technique [0002] With the rapid economic and social development and the continuous acceleration of urbanization, a large amount of domestic sewage and industrial wastewater are produced, and water bodies such as rivers and lakes are polluted to varying degrees. According to the 2016 Bulletin on the State of the Environment in China, among the 1,940 evaluation, assessment, and ranking sections (points) of surface water in the country, 16.8%, 6.9%, and 8.6% of Grade IV, Grade V, and inferior Grade V were respectively. Among the 6,124 groundwater quality monitoring points, 45.4% and 14.7% of the monitoring points had poor water quality and extremely poor water quality, respectively. Among the 897 monitoring sections (points) of centralized drinking ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32C02F3/34
CPCC02F3/327C02F3/34
Inventor 朱光灿刘连清杨忠莲孙丽伟陆勇泽
Owner SOUTHEAST UNIV
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