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Effective integrated wastewater treatment process and device

A technology of sewage treatment and sewage treatment equipment, applied in the field of environmental engineering, can solve the problems of ammonia nitrogen reduction, ammonia nitrogen, total nitrogen removal efficiency is not high, sewage collection capacity is insufficient, etc., to increase biomass, increase oxygen utilization efficiency, increase microbial The effect of attached surface area

Inactive Publication Date: 2015-06-03
JIANGSU SHANGDA WATER AFFAIR
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the removal efficiency of ammonia nitrogen and total nitrogen in my country's sewage treatment process is not high. On the one hand, urban domestic sewage can be treated in a centralized manner, but the vast rural areas are scattered, resulting in insufficient sewage collection capacity.
On the other hand, the traditional A / O, oxidation ditch and other processes are limited by insufficient carbon sources in the influent and the degree of denitrification, so it is difficult to further reduce ammonia nitrogen

Method used

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  • Effective integrated wastewater treatment process and device
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  • Effective integrated wastewater treatment process and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1 Efficient integrated sewage treatment equipment

[0034] The installation diagram of efficient integrated sewage treatment equipment is as follows figure 1 , figure 2 shown.

[0035] The sewage treatment equipment includes:

[0036] The first anoxic zone (1), the anaerobic zone (2), the first aerobic zone (3), the second anoxic zone (4), the second aerobic zone (5) and the precipitation zone (6), wherein The first anoxic zone (1), the anaerobic zone (2), the first aerobic zone (3), the second anoxic zone (4), the second aerobic zone (5), the sedimentation zone (6) and the storage The mud zone (7) is in turn separated by partitions. The first anoxic zone (1) and anaerobic zone (2), the first aerobic zone (3) and the second anoxic zone (4), the second aerobic zone (5) and the precipitation zone (6) Water holes are left on the bottom of the separator, and water holes are left on the anaerobic zone (2), the first aerobic zone (3), the second anoxic zone (4) ...

Embodiment 2

[0039] Example 2 Working Principle of Efficient Integrated Sewage Treatment Equipment

[0040] The principle of treating sewage with the efficient integrated sewage treatment equipment of the present invention is as follows:

[0041] Firstly, after the domestic sewage is lifted by the water pump, it enters the first anoxic zone in the sewage treatment equipment, where the denitrifying bacteria denitrify, the organic matter is reduced, and the chemical oxygen demand (COD Cr ) can be reduced. The bottom of the first anoxic zone and the anaerobic zone are connected, and the sewage enters the anaerobic zone through the water hole at the bottom. Phosphorus removal bacteria decompose polyphosphate particles under anaerobic conditions to produce energy substances (adenosine triphosphate) ATP and poly-β-hydroxybutyrate acid (PHB), the electron acceptor in this process is the organic substance in the sewage (ie, the source of C), so the organic substance can be reduced. The anaerobic z...

Embodiment 3

[0042] Example 3 Sewage treatment equipment is applied to treat domestic sewage in small rural areas

[0043] The scope of domestic sewage storage is: 10 households (26 people), the daily sewage volume is 3.5 tons, the chemical oxygen demand (COD Cr ) concentration is 278mg / L, the ammonia nitrogen concentration is 37mg / L, the total nitrogen concentration is 46mg / L, and the total phosphorus concentration is 1.7mg / L.

[0044] Utilize sewage treatment equipment of the present invention to process rural domestic wastewater treatment process flow chart as image 3 shown.

[0045] The technical parameters of a high-efficiency integrated sewage treatment equipment used in rural domestic sewage are as follows:

[0046] Hypoxic zone: effective volume 0.5m 3 . Add spherical filler with a diameter of 150mm in this area, and the volume is 0.2m 3 . The sewage flow direction is from top to bottom.

[0047] Anaerobic zone: effective volume 0.2m 3 . Dosing spherical packing with a di...

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Abstract

The invention discloses an effective integrated wastewater treatment process and device and belongs to the technical field of environment engineering. By adopting the effective integrated wastewater treatment device, after the sewage flowing into the integrated treatment device, the sewage is processed by anoxic-anaerobic-aerobic-secondary anoxic-secondary aerobic biochemical reaction zones, and the processing effect of intensifying the ammonia nitrogen and phosphorous can be reached. The rural domestic wastewater is processed by the effective integrated wastewater treatment device, and the emission standard reaches the primary B standard. The integrated device is one-time shaped, is compact in structure, high in integration degree and convenient in operation management and is suitable for the dispersed and centralized treatment of the rural domestic wastewater.

Description

technical field [0001] The invention relates to a high-efficiency integrated sewage treatment process and device, belonging to the technical field of environmental engineering. Background technique [0002] According to statistics, during the period from 2003 to 2012, the total amount of ammonia nitrogen emissions from industry, agriculture, urban life, motor vehicles and centralized pollution control facilities in China was 1570×10 4 t, the total amount of ammonia nitrogen discharge in domestic sewage is 1052.4×10 4 t, accounting for 67% of the total emissions. [0003] At present, the removal efficiency of ammonia nitrogen and total nitrogen in my country's sewage treatment process is not high. On the one hand, urban domestic sewage can be treated centrally, but the vast rural areas are scattered, resulting in insufficient sewage collection capacity. On the other hand, traditional A / O, oxidation ditch and other processes are limited by insufficient carbon sources in the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 徐卫东顾杨申萍萍程杨王浦鲍金平
Owner JIANGSU SHANGDA WATER AFFAIR
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