Technical method for anaerobic enhanced biological phosphorus removal of sewage treatment plant

A sewage treatment plant, biological phosphorus removal technology, applied in the direction of biological water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of limited effect, high operating cost, complicated operation, etc. Achieve large aperture and obvious effect

Pending Publication Date: 2021-10-22
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The chemical phosphorus removal process consumes chemicals such as PAC and produces a large amount of chemical sludge, causing secondary environmental pollution and relatively high treatment costs; dialysis, ion exchange and other technologies have high operating costs and complex operations, which are difficult to meet the requirements of wastewater phosphorus removal. the actual operational needs of
[0003] Under anaerobic conditions, a small amount of phosphate in wastewater will be converted into gaseous phosphide, resulting in a decrease in total phosphorus concentration in water, but this effect is very limited
The existing patent ZL201810100234.1 inoculates anaerobic sludge into phosphorus-containing wastewater to be treated, adds biochar and applies ex

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] Example 1

[0027] (1) 54% iron powder, 27% coconut shell activated carbon, 17.5% bentonite and 1.5% ammonium hydrogencarbonate, and then pressed into a diameter of 3 cm spherical particles, transfer it to a 550 ° C reaction furnace, high temperature in a nitrogen atmosphere Heat treatment 2H, prepared iron composite functional materials similar to ceramics;

[0028] (2) In the anaerobic pool prepared by step (1), the pH of the UCT water treatment process is 7.1, and the auspeal pond has 6 gallery channels, starting from the anaerobic pool. The neutral grille frames filled with composite functional materials in the middle of the first, 2, 3, 4, and 5 corridors; the returning pump is installed in the end of the 4th corner of the anaerobic pool, and the wastewater is returned to the first corridor Inlet position, the flow rate of reflow wastewater is 15% of the anaerobic pool inlet flow.

[0029] The total phosphorus removal rate of the anaerobic pool of the anaerobic pool of...

Example Embodiment

[0031] Example 2

[0032] (1) 51% iron powder, 34% coconut shell activated carbon, 13.5% polyvinyl alcohol, 1.5% sodium hydrogencarbonate, then pressed into a diameter of 3 cm spherical particles, transferred to 550 ° C reactor, in a nitrogen atmosphere High temperature heat treatment for 2 h, preparing iron composite functional materials;

[0033] (2) In the anaerobic pool prepared by step (1) to the anaerobic pool of the UCT water treatment process, the pH of the water body is 6.8, and the anaerobic pool has a total of 6 gallery channels, and the first in the anaerobic pool. The middle of the 2, 3, 4, and 5 corridors are provided with a mesh griller frame with a composite functional material; the return pump is installed at the end of the 4th corridor of the anaerobic pool, and the wastewater is returned to the first corridor position. The flow rate of reflow waste water is 10% of the anaerobic pool.

[0034] The total phosphorus removal rate of the water treatment system for th...

Example Embodiment

[0035] Example 3

[0036] (1) 44% iron powder, 44% coconut shell activated carbon, 16.8% bentonite, 1.2% omestonium bicarbonate mix well, then pressed into a diameter of 3 cm spherical particles, transferred to a 700 ° C reaction furnace, high temperature in a nitrogen atmosphere Heat treatment 1.5H, prepared to obtain iron composite functional materials;

[0037] (2) Putting the composite functional material prepared by step (1) to an anaerobic pool of the UCT water treatment process, the water pH is 6.5, the anaerobic pool has 6 gallery channels, starting from the anaerobic pool 1, 2, 3, 4, 5 corridors are arranged with a mesh grille frame with a composite functional material; install a reflow pump at the end of the 4th corridor of the anaerobic pool, returning wastewater back to the first corridor Location, the flow rate of reflow waste water is 5% of the anaerobic pool inlet flow.

[0038] Conventional UCT water treatment process The total phosphorus removal rate of inhoxic po...

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PUM

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Abstract

The invention discloses a technical method for anaerobic enhanced biological phosphorus removal of a sewage treatment plant, and belongs to the technical field of sewage treatment. A composite functional material is added into an anaerobic reaction tank, phosphate in a water body is promoted to be converted into gaseous phosphide and escaped from the water body, the purpose of enhancing biological phosphorus removal is achieved, the main body of the composite functional material comprises iron and carbon components, a binder and a pore forming agent are added, and after mixing, the mixture is burned in a nitrogen atmosphere to obtain a light and loose porous material; and the prepared composite functional material is filled into a net-shaped grating frame body and is arranged along the water flow direction of an anaerobic tank, and wastewater is in contact with the composite functional material immersed in the anaerobic tank when flowing in a corridor of the anaerobic tank, so that soluble phosphate in a water body is promoted to be effectively converted into gaseous phosphide.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a technical method for anaerobic enhanced biological phosphorus removal in a sewage treatment plant. Background technique [0002] Phosphorus in urban sewage mainly comes from several aspects such as domestic sewage, industrial wastewater and agricultural production water. In the natural environment, phosphorus exists in the form of organic and inorganic phosphates. It is not only an important component of biological cells, but also a component of many important coenzymes. The phosphorus content of RNA and DNA is usually high. In the sewage treatment system, orthophosphate, organic phosphorus and polyphosphate are the main forms of phosphorus. Excessive phosphorus content in water often leads to eutrophication of water, which has a serious negative impact on natural water bodies. Therefore, it is urgent to treat phosphorus in sewage. The current phosphorus ...

Claims

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Application Information

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IPC IPC(8): C02F3/28C02F3/00C02F101/10
CPCC02F3/28C02F3/005C02F2101/105
Inventor 刘树根叶富英周莹妮刘宣伶宁平孟甜甜姜骞龙
Owner KUNMING UNIV OF SCI & TECH
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