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System and method for treating black and odorous stagnant water

A black and odorous water body and stagnation technology, applied in chemical instruments and methods, energy wastewater treatment, water treatment parameter control, etc., can solve the problem of high concentration of water pollutants, achieve high treatment efficiency, save treatment costs, and reduce land occupation area effect

Inactive Publication Date: 2016-04-20
沈晓笑
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Aiming at the problem of high pollutant concentration in stagnant and polluted river water bodies in the prior art, the present invention provides a system and method for treating stagnant black and odorous water bodies

Method used

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  • System and method for treating black and odorous stagnant water
  • System and method for treating black and odorous stagnant water
  • System and method for treating black and odorous stagnant water

Examples

Experimental program
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Effect test

Embodiment 1

[0053] combine Figure 1-3, a system for treating stagnant black and odorous water, including anoxic zone 2, aerobic zone 3, mixing zone 1, stable zone 4, enclosure and return pipeline 9, wherein the enclosure includes enclosure I51, enclosure II52 And enclosure III53, divide the river along the flow direction into mixed zone 1, anoxic zone 2, aerobic zone 3 and stable zone 4, mixed zone 1 water volume: anoxic zone 2 water volume: aerobic zone 3 water volume: stable zone 4 water volume = 1:(2~4):(4~6):1, the water volume in the anoxic zone 2: the water volume in the aerobic zone 3 is 1:1-3, when the ammonia nitrogen concentration is 4-5mg / m 3 Take the value of 1:3, the concentration of ammonia nitrogen is 2-4mg / m 3 Take a 1:1 value between times.

[0054] Mixed zone 1 and anoxic zone 2 are separated by enclosure I51, anoxic zone 2 and aerobic zone 3 are separated by enclosure II52, aerobic zone 3 and stable zone 4 are separated by enclosure III53 Open, the stabilization zon...

Embodiment 2

[0079]A stagnant river in a certain city, water quality before treatment: "Surface Water Environmental Quality Standard" (GB3838-2002) inferior to Class V, specific water quality: pH7~9, COD≤80mg / L, ammonia nitrogen≤5mg / L, transparency≤10cm, Dissolved oxygen≤0.5mg / L. Adopt technology of the present invention, combine Figure 1-3 , its structure and processing steps are the same as in Example 1, ammonia nitrogen concentration 2-4mg / m 3 , water volume in mixing zone 1: water volume in anoxic zone 2: water volume in aerobic zone 3: water volume in stable zone 4=1:4:4:1.

[0080] The submerged plants and emergent plants are planted in the aerobic zone 3, the submerged plants account for 10% of the water surface area of ​​the aerobic zone 3, and the emergent plants account for 15% of the water surface area of ​​the aerobic zone 3.

[0081] Anoxic zone 2 is planted with submerged plants and emergent plants. Submerged plants account for 5% of the water surface area of ​​anoxic zone...

Embodiment 3

[0090] The stagnant river channel 2 in a certain city has a length of 2.1km, an upper mouth width of 20m, a lower mouth width of 11m, an effective water depth of 1.5m, a slope ratio of 1:3, and a water volume of 48825m 3 . Water quality before treatment: "Surface Water Environmental Quality Standard" (GB3838-2002) inferior to Class V, specific water quality: pH7~9, COD≤80mg / L, ammonia nitrogen≤5mg / L, transparency≤10cm, dissolved oxygen≤0.5mg / L . Adopt technology of the present invention, combine Figure 1-3 ,, its structure and processing steps are the same as in Example 1, ammonia nitrogen concentration 4-5mg / m 3 , water volume in mixing zone 1: water volume in anoxic zone 2: water volume in aerobic zone 3: water volume in stable zone 4=1:2:6:1.

[0091] Submerged plants and emergent plants are planted in the aerobic zone 3, the submerged plants account for 15% of the water surface area of ​​the aerobic zone 3, and the emergent plants account for 30% of the water surface a...

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Abstract

The invention discloses a system and method for treating black and odorous stagnant water, and belongs to the technical field of water restoration. The system comprises a mixing zone, an anoxic zone, an aerobic zone, a stabilizing zone, enclosures and a backflow pipeline. The enclosures include the enclosure I, the enclosure II and the enclosure III and divide a riverway into the mixing zone, the anoxic zone, the aerobic zone and the stabilizing zone in sequence in the water flow direction, the mixing zone and the anoxic zone are separated through the enclosure I, the anoxic zone and the aerobic zone are separated through the enclosure II, the aerobic zone and the stabilizing zone are separated through the enclosure III, and the stabilizing zone and the mixing zone are connected through the backflow pipeline. The stabilizing zone is used for stabilizing water quality and enabling bottom backflow liquid to flow back to the mixing zone. The system has the advantages of being strong in pollutant removal pertinence and high in removal efficiency, fully guarantees the improvement of the circulating and self-purifying capabilities of the water and the restoration of the ecological function of the water and also has the advantages of being capable of reducing investment and good in operating effect.

Description

technical field [0001] The invention belongs to the technical field of water restoration, and more specifically relates to a system and method for treating stagnant black and odorous water. Background technique [0002] With the rapid development of our country's economy, the acceleration of industrialization and urbanization, and the continuous increase of population, more rivers are divided and gated, resulting in stagnation and pollution of water bodies. Many rivers are black in color and smelly. . The water body has problems such as reduced dissolved oxygen, low transparency, and increased nutrients, and other problems of river ecosystem degradation. The deterioration of water quality has resulted in the simplification of the structure of aquatic biological communities and the decline of biodiversity. [0003] At present, my country's water pollution situation is still relatively serious. The 2014 "China Environmental Status Bulletin" pointed out that 968 state-control...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCY02W10/37C02F9/00C02F3/30C02F3/32C02F2101/16C02F2209/08C02F2209/14C02F2303/02
Inventor 沈晓笑
Owner 沈晓笑
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