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A high ammonia nitrogen sewage treatment device and process with a circulating pool

A technology of sewage treatment device and circulating pool, applied in water/sewage treatment, water/sewage multi-stage treatment, degassed water/sewage treatment, etc., can solve the problems of inoperable system, short residence time, incomplete separation, etc. Achieve the effect of improving mass transfer efficiency, reducing floor space and improving technical content

Active Publication Date: 2020-10-27
周大军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Simple circulation tank design, when used for denitrification of 200-600mg / L ammonia nitrogen sewage at room temperature, the residence time in the circulation tank is short, resulting in incomplete separation, reduced mass transfer driving force, and reduced stripping efficiency;
[0005] It is used for industrial sewage with high content of tar components, high viscosity and surface tension of water, and high foaming coefficient. The large amount of sewage produced is highly stable, which will cause the wave tube to flood, and even fill the wave tube in severe cases. , making the system inoperable;
[0006] It is difficult for the device to meet the normal temperature denitrification requirements of ultra-large-scale high-ammonia-nitrogen sewage;
[0007] The rotating foam separation method high ammonia nitrogen sewage denitrification device designed by the circulation tank at room temperature, when used for the treatment of large water volume and high ammonia nitrogen sewage above 5000mg / L, requires a large area and is difficult to be used in the production equipment. The degree of intensification is high modern enterprises, as well as those small and medium-sized enterprises with a small area of ​​concentrated open space;
[0008] The rotating foam separation method denitrification device for high ammonia nitrogen sewage at room temperature designed by the circulation tank is used for large-scale water treatment. The circulation tank needs to bear large mechanical strength and dynamic load, which requires a large increase in equipment costs.

Method used

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  • A high ammonia nitrogen sewage treatment device and process with a circulating pool
  • A high ammonia nitrogen sewage treatment device and process with a circulating pool
  • A high ammonia nitrogen sewage treatment device and process with a circulating pool

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Embodiment 1

[0029] Biopharmaceutical wastewater treatment of a Hunan Biotechnology Co., Ltd. This project adopts the comprehensive sewage treatment process of "rotary foam separation method at room temperature denitrification + tail gas deep purification + biochemical treatment (including oxidation pond)". In this project, a sewage circulation pool is configured 10m 3 . The sewage treatment circulation pond comprises a sewage pond 11 and a sedimentation pond 12, and a partition wall 13 separates the sewage pond 11 from the sedimentation pond 12; There are sewage circulation pipeline channels 111, raw water pipeline channels 112, and pH adjustment pipeline channels 113; a solid phase collection well 121 is provided at the bottom of the sedimentation tank, and a pipeline 122 that can discharge the contents of the well from the sedimentation tank is arranged in the solid phase collection well 121. The side wall of the sedimentation tank near the bottom is provided with a sewage discharge pi...

Embodiment 2

[0033] The coking wastewater treatment of a group in Jiangxi, the daily wastewater treatment reaches 1440t / d, the imported ammonia nitrogen value reaches 5021mg / L, and the foaming coefficient of the sewage reaches 2.52, which belongs to easy foaming sewage. If the circulation tank scheme is adopted, its volume needs to be at least 100 cubic meters, which not only occupies a large area and is expensive, but also makes defoaming in the tank very difficult. In response to this situation, an external circulating pool solution was adopted.

[0034] In this project, a sewage circulation pool of 120m is configured 3 The sewage treatment circulation pond comprises a sewage pond 11 and a sedimentation pond 12, and the separation wall 13 separates the sewage pond 11 from the sedimentation pond 12; The wall is provided with a sewage circulation pipeline channel 111, a raw water pipeline channel 112, and a pH adjustment pipeline channel 113; a solid phase collection well 121 is provided ...

Embodiment 3

[0038] A chemical plant in Hubei had an original sewage treatment system, and the ammonia nitrogen in the sewage discharged seriously exceeded the standard. The amount of ammonia nitrogen sewage discharged by the enterprise is only 20 tons per day, and the original sewage treatment system occupies a small area. However, the ammonia nitrogen value in sewage is as high as 3215 mg / L, and at least level 2 is required to reduce it to below 200 mg / L for biochemical treatment. The on-site inspection also found that if new equipment is added, its footprint must be less than 10m 2 . According to this situation, a two-stage vertical rotating foam separation denitrification device at room temperature and an external circulation pool scheme were adopted to achieve the expected goal that the ammonia nitrogen value at the outlet of the pretreatment system should not exceed 180mg / L for biochemical treatment. The actual floor area is controlled at 8m 2 Within this period, the problem of se...

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Abstract

The invention discloses a high-ammonia-nitrogen sewage treatment circulating pool, a sewage treatment device consisting of the sewage treatment circulating pool and a sewage treatment process. The high-ammonia-nitrogen sewage treatment circulating pool comprises a sewage pool and a sedimentation pool. The high-ammonia-nitrogen sewage treatment device of the sewage treatment circulating pool comprises a circulating pool body and a vertical rotary foam separating device, wherein the vertical rotary foam separating device consists of a wave duct, a gas-liquid separation tank and a tail gas pipe. The sewage treatment device has the advantages that the stability problem of air bubbles is effectively controlled, the denitriding blow-off efficiency when the ammonia-nitrogen sewage is at normal temperature can be further improved, the floor space of the device can be effectively decreased, the mechanical strength of the wave duct and a tail gas purifying pipe is improved, the device is more flexible to install, a process route is friendly to the environment, simple and efficient, the cost is low, the universality and repeatability are good, and the device has a wide market prospect.

Description

technical field [0001] The invention relates to a sewage treatment device and process in the field of environmental protection, in particular to a high ammonia nitrogen sewage treatment circulation pool, and a sewage treatment device and sewage treatment process composed of the sewage circulation pool. Background technique [0002] At present, the types of sewage treatment processes used in my country mainly include the following types: traditional activated sludge treatment process, AB process, A / O and A2 / O process, hydrolysis-aerobic process, oxidation ditch process, SBR and its variant process, Biological aerated filter process, biological contact oxidation process, oxidation pond, BIOLAK and land treatment process. With the development of sewage treatment, a variety of sewage treatment processes have been applied in my country's sewage treatment plants, among which A / O, A2 / O and their deformation processes, oxidation ditch, SBR and their variant processes are the main one...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/04C02F101/16
CPCC02F1/20C02F1/52C02F1/66C02F9/00C02F2101/16C02F2201/002C02F2301/046C02F2303/12
Inventor 周大军
Owner 周大军
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