Multiphase flow rotation foam separation device and waste water/ gas treatment technology using same

A technology of foam separation and multiphase flow, which is applied in combined devices, separation methods, water/sewage treatment, etc., can solve the problems of high construction and operation costs, large floor space, and low efficiency, and achieve small floor space and high installed capacity. The effect of small capacity and low project investment

Inactive Publication Date: 2013-03-27
HUNAN KEYING SPECIAL ENVIRONMENTAL PROTECTION EQUIP & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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 ones. Other processes such as AB process, biological aerated filter, hydrolysis-aerobic process, biological contact oxidation process, stabilization pond, BIOLAK process, wetland treatment and other sewage treatment processes also have a certain scale of application, but no matter what kind of process must be large-scale For sewage ponds or wetlands, special aeration and auxiliary sedimentation devices need to be added. If treatment chemicals need to be added, additional chemical addition

Method used

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  • Multiphase flow rotation foam separation device and waste water/ gas treatment technology using same
  • Multiphase flow rotation foam separation device and waste water/ gas treatment technology using same

Examples

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Effect test

Embodiment 1

[0028] China Salt Group Co., Ltd. Xiangyu Project

[0029] Hydrazine hydrate wastewater project, daily treatment capacity: 500t / d,

[0030] Imported ammonia nitrogen: 6320mg / L, imported CODcr: 34600mg / L

[0031] Export ammonia nitrogen: 168mg / L, export CODcr: 1600mg / L

[0032] The final effluent flow direction: sent to the main sewage treatment station of the general plant, and after the final treatment is completed, it will be discharged up to the standard.

[0033] 1), first start the fan 8 to introduce air into the wave tube 1 of the multiphase flow rotating foam separation device, and close the liquid phase outlet valve 15 of the circulation tank 3 at the same time;

[0034] 2) Sewage is sent to the circulation tank 3 of the multiphase flow rotary foam separation device through the liquid phase inlet 9, and then the wastewater to be treated is sent to the rotary flow nozzle 2 of the wave tube 1 through the circulation pump 7, and the waste water introduced by the fan 8 ...

Embodiment 2

[0039] Hengyang Hailian salt brine chemical project

[0040] Soda making waste liquid full cycle project, daily processing capacity: 900t / d, deamination temperature 74°C

[0041] Composition of imported waste liquid:

[0042] NaHCO 3 : 10.12gL, NaCl: 64.26g / L, NaCl 2 SO 4 : 20.84g / L,

[0043] NH 4 HCO 3 : 74.66gL, NH 4 Cl: 187.48g / L;

[0044] The composition of the export waste liquid:

[0045] NaHCO 3 : 9.28gL, NaCl: 64.15gL, NaCl 2 SO 4 : 20.72gL,

[0046] NH 4 HCO 3 : 11.92gL, NH 4 Cl: 184.38gL;

[0047] The waste liquid is sent to the heat exchanger through the sewage to raise the temperature to the expected temperature to decompose the C in the liquid 2 O and free ammonia are then sent to the first-stage parallel multiphase flow rotary foam separation device to blow off the NH 4 HCO 3 The content of NH content is reduced to less than 30%. After passing the standard, the feed liquid is pumped to the second-stage multiphase flow rotary foam separation dev...

Embodiment 3

[0049] Changsha Shengxi Manganese Industry Project

[0050] Daily treatment capacity of electrolytic manganese wastewater: 120t / d, process design: three-stage single-pipe stripping + sepiolite adsorption

[0051] Imported ammonia nitrogen: 3260mg / L, ammonia titer at the outlet of ammonia absorption tower: 29.2tt

[0052] Ammonia nitrogen export: first grade 689mg / L, second grade: 366mg / L, third grade: 105mg / L;

[0053] Sepiolite adsorption tower outlet: 12.8mg / L.

[0054] The sewage discharged to the sewage pool is sent to the first-stage parallel multiphase flow rotary foam separation device by circulating pumps for alternate and intermittent blowoff, and the pH value is controlled at about 11 at the same time. After the free ammonia is blown off to below 800mg / L, the feed liquid is pumped to the second-stage parallel multiphase flow rotary foam separation device to blow off the ammonia nitrogen to below 150mg / L, and then the feed liquid is pumped to the sepiolite adsorptio...

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Abstract

The invention discloses a multiphase flow rotation foam separation device and a waste water/gas treatment technology using the device. The technology and the device are used for high-ammonia nitrogen sewage treatment, can be used for replacing the conventional technologies such as aerobiotic aeration, steam stripping, air stripping and the like and have the advantages that the upper limit concentration is not limited, the ammonia nitrogen removal rate is more than 95%, and the chemical oxygen demand (COD) cr removal rate is more than 98%. The device has multiple functions such as ammonia nitrogen dissociation reaction, air stripping and ammonia recovery, thus being capable of easily completing high-ammonia nitrogen waste liquid full-loop operation in a matching way and realizing 'zero emission' in deed. The device can be used for treating various industrial flue gases with high temperature, high sulfur, high humidity and high dust content, integrates the functions of cooling, desulfurating and dust removing, and has the desulfurization rate being more than 90% and the dust removal rate being more than 99%; and after multiple stages of multiphase flow rotation foam separation devices are connected in series, the effect of electric precipitation can be achieved, but the project investment and energy consumption are far lower than those of electric precipitation.

Description

technical field [0001] The invention relates to a process for treating waste water and waste gas in the field of environmental engineering by using multiphase flow rotating foam separation technology and equipment. 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 ones. Other processes such as AB process, biological aerated filter, hydrolysis-aerobic proc...

Claims

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Application Information

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IPC IPC(8): C02F1/00B01D53/78B01D53/60B01D50/00
Inventor 周大军赵满秀颜伟炜
Owner HUNAN KEYING SPECIAL ENVIRONMENTAL PROTECTION EQUIP & TECH
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