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Method and system for treating urban micro-polluted river water

A treatment method and a treatment system technology, applied in the field of urban micro-polluted river water treatment methods and systems, to achieve the effects of reasonable conception, simple operation process, and improved maintenance efficiency

Pending Publication Date: 2019-08-27
湖北山鼎环境科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] In order to solve the problems existing in the above-mentioned urban micro-polluted water body treatment method, the present invention proposes a method with reasonable conception and simple operation process, which can make the treated micro-polluted water body meet the "Environmental Quality Standards for Surface Water" (GB3838-2002) Treatment methods for urban micro-polluted river water according to Class IV water discharge standards (except for total nitrogen)

Method used

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  • Method and system for treating urban micro-polluted river water
  • Method and system for treating urban micro-polluted river water

Examples

Experimental program
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Effect test

Embodiment 1

[0056] Taking the slightly polluted Yonggou River in a city north of the Yangtze River as an example, the water quality data of the initial survey of the city’s river course are as follows: the concentration of COD (chemical oxygen demand) is ≤150mg / l, and the concentration of SS (suspended solids) is ≤20mg / l , NH3-N (ammonia nitrogen) concentration value ≤ 15mg / l, TP (total phosphorus) concentration value ≤ 1.5mg / l, PH at 6-7. Combined with the geographical location of the river, an underground sewage treatment station is set up somewhere in the upper reaches of the micro-river. After the river inflow trash dam passes through the pretreatment system, it is lifted by submersible pumps to the first anoxic pool 1 with biological filler inside. The dissolved oxygen in the anoxic pool 1 is controlled within 0.5mg / l through the anoxic pool dissolved oxygen meter;

[0057] The effluent of the first anoxic pool 1 flows into the first aerobic pool 2 with biological filler inside, and ...

Embodiment 2

[0066] The slightly polluted Yonggou river water in a city north of the Yangtze River was taken. The water quality data of the initial survey of the city’s river course are as follows: the concentration of COD ≤ 120mg / l, the concentration of SS ≤ 18mg / l, the concentration of NH3-N ≤ 10mg / l, The concentration of TP is ≤1.5mg / l, and the pH is 7-8.

[0067] Elevate to the first anoxic pool 1 with biological filler inside through the submersible pump, and the dissolved oxygen in the first anoxic pool 1 is controlled within 0.5 mg / l by the anoxic pool dissolved oxygen meter;

[0068] The effluent of the first anoxic pool 1 flows into the first aerobic pool 2 with biological filler inside, and the dissolved oxygen in the first aerobic pool 2 is controlled at 3mg / l by the dissolved oxygen meter of the aerobic pool;

[0069] The water from the first aerobic pool 2 flows into the middle slow-release oxygen pool 3 with a pusher at the bottom;

[0070] The water from the middle slow-rel...

Embodiment 3

[0077] The slightly polluted Yonggou river water in a city north of the Yangtze River was taken. The water quality data of the initial survey of the city’s river course are as follows: the concentration of COD ≤ 100mg / l, the concentration of SS ≤ 15mg / l, the concentration of NH3-N ≤ 8mg / l, The concentration of TP is ≤1.0mg / l, and the pH is 6-8.

[0078] Elevate to the first anoxic pool 1 with biological filler inside through the submersible pump, and the dissolved oxygen in the first anoxic pool 1 is controlled within 0.1mg / l by the anoxic pool dissolved oxygen meter;

[0079] The effluent of the first anoxic pool 1 flows into the first aerobic pool 2 with biological filler inside, and the dissolved oxygen in the first aerobic pool 2 is controlled at 4mg / l by the dissolved oxygen meter of the aerobic pool;

[0080] The water from the first aerobic pool 2 flows into the middle slow-release oxygen pool 3 with a pusher at the bottom;

[0081] The water from the intermediate slow...

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Abstract

The invention relates to a method and system for treating urban micro-polluted river water. The method comprises the steps that a biological filler is set in a two-stage AO unit, aeration is performedat the bottom of a biological contact oxidation pond to oxygenate sewage and make the sewage in the pond body in a flow state to ensure the sufficient contact between the sewage and the filler in thesewage, organic matter in the sewage is adsorbed by a biofilm in the biological contact oxidation pond, and the organic matter is oxidized and decomposed by microorganisms formed on the filler wall in the biological contact oxidation pond under an aerobic condition, so that the sewage is deeply purified. The system comprises a first anoxic tank, a first aerobic tank, an intermediate slow releaseoxygen tank, a second anoxic tank, a second aerobic tank, a flocculation reaction tank, a secondary sedimentation tank and a tail water treatment system. The operation process is simple, and the treated micro-polluted water body can reach the IV-class water discharge standard (excluding total nitrogen) in the <Surface Water Environmental Quality Standard> (GB3838-2002).

Description

technical field [0001] The invention belongs to the field of environmental protection and treatment, and in particular relates to a method and system for treating slightly polluted urban river water. Background technique [0002] With the rapid development of modern economy, the problem of river pollution is becoming more and more serious due to the influence of human factors such as industrial and urban wastewater and farmland surface runoff. And along with the continuous growth of the urban population, the expansion of the urban area has highlighted the shortage of urban drainage facilities, and the gully rivers in the urban areas of many cities have gradually become sewage channels for urban sewage. Under the general environment that cities across the country are strengthening the construction of water environment, more and more gully sewage is finally intercepted and sent to sewage treatment plants for treatment, thereby reducing the pollution to the main basin. [0003...

Claims

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Application Information

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IPC IPC(8): C02F9/14
CPCC02F9/00C02F2103/007C02F1/001C02F3/30C02F2301/08C02F1/5236C02F1/56C02F2303/04C02F2209/005C02F1/32
Inventor 张宝军饶维平何平定陈鑫徐惠星何强
Owner 湖北山鼎环境科技股份有限公司
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