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Phosphorus removal biological aerated filter-catalytic ozonation coupling device and use method thereof

A biological aerated filter, ozone catalytic oxidation technology, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. It has problems such as biological phosphorus removal operation and low phosphorus removal efficiency, which can reduce operating costs, save operating costs, and strengthen removal capacity.

Inactive Publication Date: 2015-07-22
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the biological aerated filter usually only removes biodegradable organic matter in wastewater, the treatment effect of this process alone on wastewater containing soluble and refractory organic matter is often not good.
Moreover, many sewage plants do not have the function of biological phosphorus removal or there is a problem that the operation of biological phosphorus removal is not stable enough, resulting in the problem of phosphorus exceeding the standard in the secondary effluent of sewage treatment plants.
The biological aerated filter process mainly removes suspended solids and dissolved organic matter, and the removal efficiency of phosphorus is relatively low

Method used

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  • Phosphorus removal biological aerated filter-catalytic ozonation coupling device and use method thereof
  • Phosphorus removal biological aerated filter-catalytic ozonation coupling device and use method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036] like figure 1 As shown, a phosphorus removal biological aerated filter-ozone catalytic oxidation coupling device, the phosphorus removal biological aerated filter-ozone catalytic oxidation coupling device includes a water inlet system 4, a pipeline mixer 5, and an aerated biological Filter 7, ozone oxidation tower 11 and ozone destruction system 14, biological aerated filter 7 and ozone oxidation tower 11 are all vertical structures, are filled with filter packing in biological aerated filter 7, are filled with in ozone oxidation tower 11 Oxidation filler, the oxidation filler is ceramsite, the pipeline mixer 5 is connected with the bottom of the biological aerated filter 7, one end of the ozone oxidation tower 11 is provided with a water outlet, and the other end is connected with the top of the biological aerated filter 7, and the ozone destruction System 14 communicates with the top of ozone oxidation tower 11; phosphorus removal biological aerated filter-ozone catal...

Embodiment 2

[0040] like figure 2 The difference between the shown embodiment and Embodiment 1 is that a Venturi tube 18 is provided between the ozone gas flow meter 13 and the ozone oxidation tower 11, and the top of the biological aerated filter 7 is connected with an intermediate pool 15 and an oxidation tower in sequence. Water inlet pump 16, oxidation tower inlet water flowmeter 17, oxidation tower inlet water flowmeter 17 is connected with Venturi tube 18; Ozone oxidation tower 11 top is provided with water outlet.

Embodiment 3

[0042] A method for dephosphorizing waste water that adopts the phosphorus removal biological aerated filter-ozone catalytic oxidation coupling device in Example 1 comprises the steps of: injecting waste water into the pipeline mixer 5 through the water inlet system 4, and simultaneously injecting the waste water into the pipe mixer 5 through the dosing system. FeSO 4 Aqueous solution injected into line mixer 5, FeSO 4 The dosage is 10-15mg FeSO 4 / mg TP, wastewater and FeSO 4 After the aqueous solution is fully mixed in the pipeline mixer 5, it enters the biological aerated filter 7 for filtration, and at the same time, the air supply system 10 is opened to fill the biological aerated filter 7 with air, and the air-water ratio in the biological aerated filter 7 is 1 Between ~3:1, the empty tower hydraulic retention time is 1~3h, inject the filtered waste water into the ozonation tower 11 and open the ozone supply device 12 at the same time, fill the ozone into the ozonation...

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Abstract

The invention discloses a phosphorus removal biological aerated filter-catalytic ozonation coupling device which comprises a water inlet system (4), a pipeline mixer (5), a biological aerated filter (7), an ozonation tower (11) and an ozone destruction system (14) which are communicated with one another in sequence, and further comprises a chemical feeding system, an air supply system (10) and an ozone supply device (12), wherein the chemical feeding system is communicated with the end, connected with the water inlet system (4), of the pipeline mixer (5); the air supply system (10) is communicated with the bottom of the biological aerated filter (7); the ozone supply device (12) is communicated with the bottom of the ozonation tower (11). The invention further discloses a phosphorus removal method for wastewater. The biological aerated filter has a relatively good phosphorus removal function; discharged wastewater can be injected into a follow-up ozonation unit to realize a catalytic oxidation effect; both the phosphorus removal efficiency and the organic pollutant removal efficiency are high.

Description

technical field [0001] The invention relates to a phosphorus removal device and a use method thereof, in particular to a phosphorus removal biological aerated filter-ozone catalytic oxidation coupling device and a use method thereof. Background technique [0002] With the gradual improvement of my country's sewage discharge standards, most sewage treatment plants are facing the pressure of standard upgrading and transformation. The research and development of technical and economically feasible sewage advanced treatment technology is one of the hot spots in the field of sewage treatment. Due to the poor biochemical properties of the secondary biological treatment effluent of the sewage plant, it is difficult to meet the standard by using biochemical treatment technology alone, and the combination of physicochemical and biochemical treatment technologies is a commonly used technology type in advanced sewage treatment. [0003] Biological aerated filter is a common advanced se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 吴昌永周岳溪王翼郭明昆
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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