Biological pretreatment system and method applicable to river type source water

A biological pretreatment and water source technology, applied in the field of water treatment, can solve the problems of unclear plant configuration in wetlands, low efficiency of in-situ water quality improvement, etc., and achieve the effects of convenient implementation, improved biodegradability, and resolution of excessive SS content

Pending Publication Date: 2019-03-08
NANJING UNIV YANCHENG ENVIRONMENTAL PROTECTION TECH & ENG RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Combining micro-dynamic aeration and biofilm technology with new gear-type suspended fillers as the carrier, and planting emergent plant species suitable for water sources, to ensure the efficiency of in-situ water quality improvement, and to solve the existing water source pretreatment projects. In terms of planting den

Method used

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  • Biological pretreatment system and method applicable to river type source water
  • Biological pretreatment system and method applicable to river type source water
  • Biological pretreatment system and method applicable to river type source water

Examples

Experimental program
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Effect test

Embodiment 1

[0047] The present invention will be further described below in conjunction with specific embodiments.

[0048] A biological pretreatment system and method suitable for water bodies in river-type water sources. In this embodiment, rivers with a water depth of 3m and a river width of 50m in plain river network areas are selected for biological pretreatment of water bodies, such as figure 1 As shown, the raw water flows through the sedimentation area, filling area and wetland plant area in sequence, and the direction of the arrow in the figure indicates the direction of water flow. in:

[0049] (1) Set up two water retaining boards in the sedimentation area. The first water retaining board along the flow direction exceeds the normal water level of the river by 200mm, and the bottom sinks into the river bottom. The first water retaining board is 200mm above the bottom and every 300mm is a rectangle. The hole is 500mm long and 200mm wide. The upper part of the second water retai...

Embodiment 2

[0060] The present invention will be further described below in conjunction with specific embodiments.

[0061] A biological pretreatment system and method suitable for water bodies in river-type water sources. In this embodiment, rivers with a water depth of 4.5m and a river width of 75m in plain river network areas are selected for biological pretreatment of water bodies, such as figure 1 As shown, the raw water flows through the sedimentation area, filling area and wetland plant area in sequence, and the direction of the arrow in the figure indicates the direction of water flow. in:

[0062] (1) Set up two water retaining boards in the sedimentation area. The first water retaining board along the flow direction exceeds the normal water level of the river by 350mm, and the bottom sinks into the river bottom. The first water retaining board is opened every 300mm above the bottom of 350mm. Rectangular hole, hole length 200mm x width 200mm. The upper part of the second water ...

Embodiment 3

[0073] The present invention will be further described below in conjunction with specific embodiments.

[0074] A biological pretreatment system and method suitable for water bodies in river-type water sources. In this embodiment, rivers with a water depth of 1.5m and a river width of 100m in plain river network areas are selected for biological pretreatment of water bodies, such as figure 1 As shown, the raw water flows through the sedimentation area, filling area and wetland plant area in sequence, and the direction of the arrow in the figure indicates the direction of water flow. in:

[0075] (1) Set up two water baffles in the sedimentation area. The first water baffle along the flow direction exceeds the normal water level of the river by 500mm, and the bottom sinks into the river bottom. The first water baffle is 500mm above the bottom and every 300mm. Hole, diameter 430mm. The upper part of the second water retaining plate along the flow direction is located 500mm bel...

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Abstract

The invention discloses a biological pretreatment system and method applicable to river type source water and the method belongs to the technical field of water treatment. The biological pretreatmentmethod applicable to river type source water does not require new construction of structures, does not occupy land and is an in-situ pretreatment method. Source water flows into a filler zone after natural sedimentation and makes full contact with filler for reaction under the dual action of natural flow state and microporous aeration of water, the biodegradability of the water is improved, the concentration of ammonia nitrogen and COD in the water can be effectively reduced, finally, the water flows into a wetland plant area, and pollutants in the source water are further reduced under the actions of assimilation, absorption and conversion of plants-organisms. The method has the advantages of low capital construction investment, implement simplicity, stable operation, significant effectsand the like.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and more specifically relates to an in-situ pretreatment technology for water bodies in river-type water sources. Background technique [0002] With the acceleration of my country's modernization process, a large amount of industrial wastewater and domestic sewage are directly discharged without treatment or treatment that is not up to standard, causing serious black and odorous phenomena in urban rivers, and causing urban water sources to be polluted to varying degrees. The types and quantities of pollutants in water sources have greatly increased, and their properties are complex, but their concentrations are relatively low, especially those organic pollutants that are refractory and bioaccumulated, which are extremely harmful to human health. However, the conventional water treatment process of the tap water plant, which mainly focuses on turbidity removal and disinfection, has no obvi...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F101/16C02F101/30
CPCC02F9/00C02F3/02C02F3/32C02F2001/007C02F2101/16C02F2101/30C02F2203/006
Inventor 李冬梅施鹏左倬郑刚杜观超马艳仲跃孟瑞华曹勋仓基俊王万忠
Owner NANJING UNIV YANCHENG ENVIRONMENTAL PROTECTION TECH & ENG RES INST
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