Integrated short-process efficient denitrification and phosphorus removal sewage treatment system and process

A sewage treatment system and short-process technology, which is applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, energy wastewater treatment, etc., can solve the shortage of serialized complete sets of equipment, lack of market-oriented operation capabilities, small and medium-sized towns Problems such as the lagging development of sewage treatment business, to achieve the effect of improving life and reducing wear and tear

Active Publication Date: 2014-08-27
NORTH CHINA MUNICIPAL ENG DESIGN & RES INST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In recent years, the construction of urban sewage treatment projects in China has developed rapidly. As of January 2014, nearly 3,500 urban sewage treatment plants have been built in my country, with a total treatment capacity of 150 million m 3 /day, but at the same time as the rapid development of urban sewage treatment, the development of sewage treatment in small and me

Method used

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  • Integrated short-process efficient denitrification and phosphorus removal sewage treatment system and process
  • Integrated short-process efficient denitrification and phosphorus removal sewage treatment system and process
  • Integrated short-process efficient denitrification and phosphorus removal sewage treatment system and process

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0035] Embodiment 1: An integrated short-flow high-efficiency phosphorus and nitrogen removal wastewater treatment process, including the following steps:

[0036] a. Sewage enters the water inlet adjustment tank 1, and the sand settling area A of the water inlet adjustment tank 1 removes suspended solids, sediment and other inorganic substances in the inlet water, and effectively adjusts the water quality and quantity of the inlet water. buffer;

[0037] b. The sewage obtained in step a enters the water inlet groove R of the three-dimensional combined flat grille 2 through the lifting action of the sewage lifting pump 9, and the first deflector 10 at the slot of the water inlet groove R guides the water to the upper grille M, after being filtered by an orifice plate with a diameter of 5mm on the upper grid M, the second baffle 11 is guided under gravity through a lower grid N with a diameter of 1mm to further remove particles and entanglements in the influent;

[0038] c. 10% of th...

Example Embodiment

[0044] Embodiment 2: An integrated short-flow high-efficiency phosphorus and nitrogen removal wastewater treatment process, including the following steps:

[0045] a. Sewage enters the water inlet adjustment tank 1, and the sand settling area A of the water inlet adjustment tank 1 removes suspended solids, sediment and other inorganic substances in the inlet water, and effectively adjusts the water quality and quantity of the inlet water. buffer;

[0046] b. The sewage obtained in step a enters the water inlet groove R of the three-dimensional combined flat grille 2 through the lifting action of the sewage lifting pump 9, and the first deflector 10 at the slot of the water inlet groove R guides the water to the upper grille M, after being filtered by an orifice plate with a hole diameter of 8mm on the upper grid M, the second baffle 11 is guided under gravity through a lower grid N with a hole diameter of 2mm to further remove particles and entanglements in the influent;

[0047] c....

Example Embodiment

[0053] Example 3: The discharge standard of a small town in the Taihu Lake Basin is the first class A standard of the "Emission Standards for Pollutants for Urban Sewage Treatment Plants" (GB18918-2002). In small towns, there are large fluctuations in water quality and quantity, shortage of technical personnel, and insufficient operation and maintenance. Under such circumstances, how to ensure that the effluent is stable and meet the standard and achieve the goal of unattended installation has become an urgent problem to be solved. For this reason, a small town integrated short-process high-efficiency phosphorus and nitrogen removal sewage treatment system is proposed. According to the actual situation of the project, a test simulation is carried out. The specific simulation situation is as follows:

[0054] The simulation experiment device is made of stainless steel, the water inlet and sludge return are completed by the axial flow pump, and the designed capacity of the device is...

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Abstract

The invention relates to an integrated short-process efficient denitrification and phosphorus removal sewage treatment system and process. The integrated short-process efficient denitrification and phosphorus removal sewage treatment system comprises a water inlet regulation pond with a sand setting function, a three-dimensional combined flat plate type grating, a hypoxic preconditioning pond, an anaerobic pond, a single-channel oxidation ditch, a cage type filler system and an MBR system, wherein the cage type filler system and the MBR system are arranged in the oxidation ditch, and the MBR system has the functions of a secondary sedimentation tank. The water inlet regulation pond is connected with the three-dimensional combined flat plate type grating. The three-dimensional combined flat plate type grating is connected with the hypoxic preconditioning pond and the anaerobic pond. The hypoxic preconditioning pond is communicated with the anaerobic pond. The anaerobic pond is connected with the single-channel oxidation ditch. The MBR system with the functions of the secondary sedimentation tank is communicated with the bottom of an aeration zone and the bottom of a non-aeration zone of the single-channel oxidation ditch. The three-dimensional combined flat plate type grating can complete the filtering function of a thin grating and the filtering function of an ultra-thin grating through once hydraulic lifting; the cage type filler system, the MBR system with the functions of the secondary sedimentation tank, and the like are arranged in the single-channel oxidation ditch, the requirement for unceasing running is fully considered when faults happen to a filtering film assembly, and therefore it is ensured that water outlet is stable and reaches the standard.

Description

Technical field [0001] The invention relates to a sewage treatment system for dephosphorization and denitrification, in particular to an integrated short-flow high-efficiency dephosphorization and denitrification sewage treatment system and a treatment process suitable for small towns, belonging to the technical field of sewage treatment. Background technique [0002] In recent years, the construction of urban sewage treatment projects in China has developed rapidly. As of January 2014, my country has built nearly 3,500 urban sewage treatment plants with a total treatment capacity of 150 million m2 3 / Day, but with the rapid development of urban sewage treatment, the development of sewage treatment in small and medium-sized towns is seriously lagging behind, the applicable sewage treatment technology is severely lacking, the project construction and operation and maintenance funds are insufficient, the operation team's business level is generally low, and the market operation abili...

Claims

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Application Information

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IPC IPC(8): C02F9/14
CPCY02W10/37
Inventor 孙永利李鹏峰郑兴灿颜秀勤张秀华殷益明杨超
Owner NORTH CHINA MUNICIPAL ENG DESIGN & RES INST
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