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Complete denitrification method for wastewater with high-concentration organic matters and high ammonia and nitrogen

An organic matter, high ammonia nitrogen technology, applied in chemical instruments and methods, biological water/sewage treatment, water pollutants, etc., can solve the problem of high operating costs, achieve the effects of small investment, reduced power consumption, and less land occupation

Pending Publication Date: 2021-09-17
广东富成环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the shortcomings of the traditional biological denitrification process in the prior art, such as high operating costs, and propose a method for complete denitrification of waste water with high concentration of organic matter and high ammonia nitrogen

Method used

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  • Complete denitrification method for wastewater with high-concentration organic matters and high ammonia and nitrogen

Examples

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Effect test

Embodiment 1

[0021] refer to figure 1 , a method for complete denitrification of wastewater with high concentrations of organic matter and high ammonia nitrogen, comprising the steps of:

[0022] S1, anaerobic reaction, add the sewage into the IC anaerobic reactor, and discharge it when the water quality C / N is equal to 0;

[0023] S2, nitrification reaction, the water source discharged from the IC anaerobic reactor is sequentially transported to the short-range denitrification tank and the short-range nitrification tank for reaction, and the DO=0mg / L and BOD=0 of the short-range denitrification are controlled, and the DO of the short-range nitrification is controlled at 0.2mg / L interval, and properly adjust the reflux from short-cut nitrification to short-cut denitrification to 2 intervals, the short-cut denitrification HRT is 30 minutes, and the short-cut nitrification HRT is 2 hours;

[0024] S3. Mud-water separation, elevating the sewage from short-range nitrification and short-range ...

Embodiment 2

[0029] refer to figure 1 , a method for complete denitrification of wastewater with high concentrations of organic matter and high ammonia nitrogen, comprising the steps of:

[0030] S1, anaerobic reaction, add the sewage into the IC anaerobic reactor, and discharge it when the water quality C / N is equal to 0.86;

[0031] S2. Nitrification reaction, the water source discharged from the IC anaerobic reactor is sequentially transported to the short-range denitrification tank and the short-range nitrification tank for reaction, and the DO=0.1mg / L and BOD=0 of the short-range denitrification are controlled, and the DO of the short-range nitrification is controlled. In the range of 0.5 mg / L, and properly adjust the reflux from short-cut nitrification to short-cut denitrification to 21 intervals, the short-cut denitrification HRT is 45 minutes, and the short-cut nitrification HRT is 37 hours;

[0032] S3, Sludge-water separation, lift the sewage from short-range nitrification and s...

Embodiment 3

[0037] refer to figure 1 , a method for complete denitrification of wastewater with high concentrations of organic matter and high ammonia nitrogen, comprising the steps of:

[0038] S1, anaerobic reaction, add the sewage into the IC anaerobic reactor, and discharge it when the water quality C / N is equal to 1.71;

[0039] S2. Nitrification reaction, the water source discharged from the IC anaerobic reactor is sequentially transported to the short-range denitrification tank and the short-range nitrification tank for reaction, and the DO=0.2mg / L and BOD=0 of the short-range denitrification are controlled, and the DO of the short-range nitrification is controlled. At 0.8mg / L, and properly adjust the reflux from short-cut nitrification to short-cut denitrification to 40, the short-cut denitrification HRT to 60 minutes, and the short-cut nitrification HRT to 72 hours;

[0040] S3, Sludge-water separation, lift the sewage from short-range nitrification and short-range denitrificati...

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Abstract

The invention relates to the technical field of sewage treatment, in particular to a complete denitrification method for wastewater with high-concentration organic matters and high ammonia and nitrogen. The method comprises the steps of anaerobic reaction, nitration reaction, mud-water separation, anaerobic ammonia oxidation, synergistic denitrification and secondary mud-water separation. The process can be completely and seamlessly connected with a whole-process nitrification and denitrification or short-process nitrification and denitrification nitrogen removal system, is small in occupied area and investment and is very suitable for a quantity and quality improvement technical improvement project; and compared with traditional biological nitrogen removal, the power consumption is reduced by 60% or above, only few carbon sources need to be added, and the treatment capacity is improved by 8 times or above; and compared with short-cut nitrification and denitrification, the power consumption is reduced by more than 40%, only few carbon sources need to be added, and the treatment capacity is improved by more than 4 times.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a method for complete denitrification of wastewater with high concentration of organic matter and high ammonia nitrogen. Background technique [0002] In order to meet the emission standards of COD (BOD5) and ammonia nitrogen (total nitrogen) as the main pollution sources in wastewater, various traditional biological denitrification processes (such as A / O, A2O2, etc.) have high operating costs, large land occupation and investment costs, and face The water quality is becoming more and more complicated. COD (BOD5), ammonia nitrogen and total ammonia cannot meet the discharge standards, and domestic discharge standards may still continue to increase. Contents of the invention [0003] The purpose of the present invention is to solve the disadvantages of the traditional biological denitrification process such as high operating cost in the prior art, and propose a meth...

Claims

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Application Information

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IPC IPC(8): C02F3/30C02F101/16C02F101/30
CPCC02F3/302C02F2101/16C02F2101/30C02F2301/043C02F2301/08
Inventor 杨光兴肖健
Owner 广东富成环境科技有限公司
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