A combined biological bed treatment process for waste water with low carbon source, high ammonia nitrogen and high organic phosphorus

A treatment process, high-ammonia nitrogen technology, applied in biological water/sewage treatment, water/sewage treatment, water/sewage multi-stage treatment, etc. problems, to achieve the effect of reducing operating costs and operating workload, improving biochemical treatment efficiency, and improving Fenton effect

Active Publication Date: 2021-10-29
XINJIANG LVFENG ENVIRONMENT PROTECTION ENG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with this method is that in the process of adding alkali to adjust the pH for precipitation, a large amount of ammonia gas will be generated at the same time, which will cause serious secondary pollution problems, and the stripping tower is often fouled, and ammonia nitrogen is removed at low temperatures. Low efficiency makes the use of traditional ammonia stripping technology have certain limitations
The direct biochemical treatment of wastewater with low carbon sources, high ammonia nitrogen and high organic phosphorus cannot meet the emission standards
[0007] The above treatment methods are difficult to fully adapt to, and it is more appropriate to use a combination of physical and chemical methods, chemical methods and biological methods to meet the discharge requirements

Method used

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  • A combined biological bed treatment process for waste water with low carbon source, high ammonia nitrogen and high organic phosphorus

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Effect test

Embodiment 1

[0045] The combined biological bed treatment process of low-carbon source, high ammonia nitrogen and high organic phosphorus wastewater includes five steps: raw water adjustment, iron carbon-Nefton treatment, struvite treatment, A2O treatment, and Fenton advanced treatment, as follows:

[0046] S1. Raw water adjustment

[0047] Raise the waste water to the adjustment tank and adjust the pH=5.

[0048] S2. Iron carbon-Nefton treatment

[0049] (1) utilize the sulfuric acid solution of mass concentration 10% to adjust pH=3, add the hydrogen peroxide aqueous solution of mass concentration 30% simultaneously, by volume, the hydrogen peroxide aqueous solution add-on is 3‰ of total water;

[0050] (2) adding iron-carbon filler, the filling ratio is 40% (weight), the aeration rate is 60L / min, and the reaction time is 5 hours;

[0051] (3) Use 20% sodium hydroxide solution to adjust the pH to 7.5, add the first flocculant, and settle in the sedimentation tank for 2 hours; add 1 g of...

Embodiment 2

[0067] The combined biological bed treatment process of low-carbon source, high ammonia nitrogen and high organic phosphorus wastewater includes five steps: raw water adjustment, iron carbon-Nefton treatment, struvite treatment, A2O treatment, and Fenton advanced treatment, as follows:

[0068] S1. Raw water adjustment

[0069] Raise the waste water to the adjustment tank, and adjust the pH=6.

[0070] S2. Iron carbon-Nefton treatment

[0071] (1) utilize the sulfuric acid solution of mass concentration 25% to adjust pH=4, add the hydrogen peroxide aqueous solution of mass concentration 30% simultaneously, by volume, the hydrogen peroxide aqueous solution add-on is 3‰ of total water yield;

[0072] (2) Add iron-carbon filler, the filling ratio is 40% (weight), the aeration rate is 60L / min, and the reaction time is 5 hours;

[0073] (3) Adjust the pH to 8 with a sodium hydroxide solution with a mass concentration of 30%, add the first flocculant, and settle in the sedimentati...

Embodiment 3

[0089] The combined biological bed treatment process of low-carbon source, high ammonia nitrogen and high organic phosphorus wastewater includes five steps: raw water adjustment, iron carbon-Nefton treatment, struvite treatment, A2O treatment, and Fenton advanced treatment, as follows:

[0090] S1. Raw water adjustment

[0091] Raise the waste water to the adjustment tank and adjust the pH=5.

[0092] S2. Iron carbon-Nefton treatment

[0093] (1) utilize the sulfuric acid solution of mass concentration 20% to adjust pH=3, add the hydrogen peroxide aqueous solution of mass concentration 30% simultaneously, by volume, the hydrogen peroxide aqueous solution add-on is 3‰ of total water;

[0094] (2) adding iron-carbon filler, the filling ratio is 40% (weight), the aeration rate is 60L / min, and the reaction time is 5 hours;

[0095] (3) Adjust the pH to 8 with a sodium hydroxide solution with a mass concentration of 25%, add the first flocculant, and settle in the sedimentation t...

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Abstract

The present invention provides a combined biological bed treatment process for waste water with low carbon source, high ammonia nitrogen and high organic phosphorus, including five steps of raw water adjustment, iron-carbon-Nefton treatment, struvite treatment, A2O treatment, and Fenton advanced treatment. The first flocculant and the second flocculant are respectively added in the iron-carbon-Nefton treatment step and the Fenton advanced treatment step; the present invention adopts the low-carbon source high ammonia nitrogen high organic phosphorus wastewater combined biological bed treatment process as the low-carbon source high The main treatment method of ammonia nitrogen and high phosphorus wastewater greatly improves the efficiency of biochemical treatment, solves the problem of low-carbon source high ammonia nitrogen and high organic phosphorus wastewater discharge standards, and has good social and economic benefits; Nefenton, iron-carbon micro-electrolysis The combination with Fenton can improve the Fenton effect, reduce operating costs and operating workload.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a combined biological bed treatment process for wastewater with low carbon sources, high ammonia nitrogen and high organic phosphorus. Background technique [0002] Common industrial wastewater, such as wastewater discharged from printing and dyeing industry, steel industry, oil refining industry, pharmaceutical industry, chemical fertilizer industry, etc., has complex water quality components, high ammonia nitrogen and total phosphorus content, and poor biodegradability, low carbon source and high ammonia nitrogen (greater than 500mg / L) The treatment of high organic phosphorus wastewater (30mg / L-150mg / L) is more difficult, and its pollution to the environment is greater and its impact is greater. The treatment process of urban planning cannot fully meet the standard operation, and the operation cost is relatively high. At present, the commonly used methods for remo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F101/30C02F101/16
CPCC02F1/461C02F1/52C02F1/5236C02F1/56C02F1/66C02F1/725C02F3/00C02F9/00C02F2001/007C02F2101/16C02F2101/30
Inventor 薛水波田政操杨娜高洪标王炜明温彦鹏
Owner XINJIANG LVFENG ENVIRONMENT PROTECTION ENG CO LTD
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