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A method of bypassing new water and running water for black and odorous river raw water

A raw water and river channel technology, applied in chemical instruments and methods, water/sewage multi-stage treatment, biological water/sewage treatment, etc., to achieve remarkable treatment effects, high stability, and simple treatment process structure

Active Publication Date: 2019-04-05
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above-mentioned deficiencies existing in the prior art, the technical problem to be solved by the present invention is: aiming at the inadequacies that the existing black-smelly river water treatment methods are difficult to simultaneously achieve efficient denitrification and dephosphorization and the effect of running water circulation, and provide a method that can improve A method of bypassing fresh water and running water for black and smelly river raw water, which is simple, efficient, and low in investment and operating costs.

Method used

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  • A method of bypassing new water and running water for black and odorous river raw water
  • A method of bypassing new water and running water for black and odorous river raw water
  • A method of bypassing new water and running water for black and odorous river raw water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] For the treatment of a black and smelly river in Hangzhou City, the wastewater used is a black and smelly river in Hangzhou. The quality of the wastewater is as follows: COD is 45000mg / L-50000mg / L, total nitrogen is 4000mg / L-5000mg / L, and total phosphorus is 300mg / L- 350mg / L.

[0047] The above-mentioned method is used to treat the black-stinky river. In the treatment method, the operating temperature of the temperature-controlled ABR reactor is controlled at 25°C, the hydraulic retention time is 7h, the pH value is controlled at 6.5, and the dissolved oxygen is controlled at 2mg / L. The operating temperature of the MBR reactor is controlled at 25°C, the hydraulic retention time is 10hh, the pH value is controlled at 6.3, and the dissolved oxygen is controlled at 3mg / L.

[0048] The water quality testing of the treated effluent shows that the removal rate of COD reaches 80%-89%, the removal rate of total nitrogen is stable at 70%-75%, and the removal rate of total phosph...

Embodiment 2

[0050] The wastewater quality of a black and smelly river in Yangzhou City is as follows: COD is 8000mg / L-10000mg / L, total nitrogen is 900mg / L-1100mg / L, and total phosphorus is 40mg / L-50mg / L.

[0051] The above method is used to treat the black and odorous river. In the treatment method, the operating temperature of the ABR reactor is controlled at 10°C±5°C, the hydraulic retention time is 7h, the pH value is controlled at 6.5, and the dissolved oxygen is controlled at 2mg / L. The operating temperature of the MBR reactor is controlled at 10°C±5°C, the hydraulic retention time is 10h, the pH value is controlled at 6.3, and the dissolved oxygen is controlled at 3mg / .

[0052] The water quality testing of the treated effluent showed that the removal rate of COD reached 60% to 65%, the removal rate of total nitrogen was stable at 50% to 60%, and the removal rate of total phosphorus reached 70% to 80%, indicating that low temperature conditions will affect Bypass new water running w...

Embodiment 3

[0054] The wastewater quality of a black and smelly river in Jiangbei New District, Nanjing is as follows: COD is 5000mg / L-9000mg / L, total nitrogen is 700mg / L-1000mg / L, and total phosphorus is 35mg / L-60mg / L.

[0055] The above-mentioned method is used to treat the black-stinky river. In the treatment method, the filling rate of the filler in the ABR and MABR reactors is 100%, so as to ensure that other reaction conditions of the reactor are suitable. The operating temperature of the ABR reactor is controlled at 30°C. The residence time is 15h, the pH value is controlled at 7.5, and the dissolved oxygen is controlled at 1mg / L. The operating temperature of the MBR reactor is controlled at 30°C, the hydraulic retention time is 20h, the pH value is controlled at 7.2, and the dissolved oxygen is controlled at 5mg / L.

[0056] The water quality test of the treated effluent shows that the removal rate of COD reaches 70%-90%, the removal rate of total nitrogen is stable at 70%-80%, and...

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Abstract

The invention discloses a method for activating black and odorous river course raw water by bypassing new water. The method comprises the following steps: introducing black and odorous river course raw water into an absorbing well; filtering off big-volume impurities through a grid, and then introducing into a collecting well; sucking the water in the collecting well into the initial end of an ABR reactor, guiding by a guide plate in the ABR reactor, and performing denitrification nitrogen removal and anaerobic phosphorus release reaction on sludge beds in various reaction chambers; introducing the effluent water after treatment by the ABR reactor into an MABR membrane bioreactor, and performing aerobic phosphorus accumulation reaction and nitration reaction; returning the effluent water at the tail end of the MABR reactor into the ABR reactor, and further performing denitrification nitrogen removal and anaerobic phosphorus release reaction; introducing the water body after further treatment by the ABR reactor into the MABR reactor, and further performing aerobic phosphorus accumulation reaction and nitration reaction; introducing the effluent water from the MABR reactor into a discharge bay; and introducing the water in the discharge bay and the black and odorous river course raw water into a mixing treatment device, mixing, and discharging the mixed effluent water to the original river course.

Description

technical field [0001] The invention relates to the field of river water treatment, in particular to a method for bypassing fresh water and running water of black and odorous river raw water. Background technique [0002] Water is the most widely distributed and very important natural resource on the earth. Due to population growth, unreasonable use and pollution, water resources are facing a serious crisis. In my country, the problem of river pollution is widespread and increasingly prominent. The eutrophication of major lakes is serious, and the pollution of rivers flowing through cities and towns is even more serious. Due to the limited sewage treatment capacity of cities in our country, the sewage treatment rate is generally only 20% to 30%. A large amount of sewage is often discharged directly into nearby urban rivers without treatment, resulting in serious organic pollution in many rivers, and seasonal or year-round black and odorous water bodies. Phenomenon. The bla...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
CPCC02F1/001C02F3/1268C02F3/28C02F2103/007
Inventor 丁露孙永军肖雪峰孙文全吴慧芳刘翠云夏霆郭莉莎贾正阳万志远吴燕霞
Owner NANJING TECH UNIV
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