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Sewage plant tail water treatment system

A technology of treatment system and sewage plant, which is applied in biological water/sewage treatment, water/sludge/sewage treatment, multi-stage water treatment, etc. Low removal rate and other problems, to achieve the effect of low construction and operation cost, large processing capacity and no energy consumption

Pending Publication Date: 2020-12-11
SOUTHWEST UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this wetland system requires additional inputs such as carbon sources, fan ventilation to increase dissolved oxygen, and the construction of each treatment unit is complex, with high operating costs and technical requirements, and a small water treatment capacity (6m 3 / h), in addition, the system has a low removal rate of total nitrogen, only about 42.9%

Method used

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  • Sewage plant tail water treatment system
  • Sewage plant tail water treatment system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] like figure 1 and figure 2 The tail water treatment system of the sewage plant shown in the example is located near the site of a sewage treatment plant. After excavation and leveling, the surrounding areas are built with sand and stones. In the middle, a 1.2-meter-high 24-wall is built with red bricks and concrete powder is used to prevent seepage. Construct a five-grid hairpin curved ditch with four turns. The ditch is 1.2m wide and has a total length of more than 1200m. The ditch is equipped with a water inlet 1 and a water outlet 6;

[0035] The bottom of the hairpin curved ditch is laid with a substrate 7 on which submerged plants 5 are planted, and multiple groups of regulating plates are sequentially arranged in the hairpin curved ditch between the water inlet 1 and the water outlet 6 The water flow regulating plate group includes a first-class water flow regulating plate 21 and a second-class water flow regulating plate 22. The front plate of the first-class w...

Embodiment 2

[0050] Renovate the landscape pond when building a villager activity square in a certain place, and at the same time treat the local polluted natural water body and a small amount of sewage tail water from the village-run food factory and introduce it into the landscape water body;

[0051] This embodiment is substantially the same as Embodiment 1, the difference being that the 1.2-meter-high 24-wall of the landscape pond is constructed with red bricks and coated with concrete powder for anti-seepage, and a four-grid hairpin curved ditch that turns three times is constructed. 1.2m wide and over 400m in total length,

[0052] Concrete construction operation process is identical with embodiment 1, and its difference is: water flow is that flow is 10m 3 / h (wherein the food factory sewage tail water is 2m 3 / h).

[0053] performance testing

[0054] The ammonia nitrogen content, chemical oxygen demand (COD), total nitrogen content and total phosphorus content in the tail water...

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Abstract

The invention belongs to the technical field of biological treatment of sewage characterized by plants, and particularly relates to a sewage plant tail water treatment system. The sewage plant tail water treatment system comprises a water inlet and a water outlet, the water inlet and the water outlet are communicated through a hairpin bent ditch, a substrate is laid at the bottom of the hairpin bent ditch, submerged plants are planted on the substrate, and a plurality of adjusting plate sets are sequentially arranged in the hairpin bent ditch between the water inlet and the water outlet. The water flow adjusting plate sets comprise first-class water flow adjusting plates and second-class water flow adjusting plates, the first-class water flow adjusting plates are arranged at the bottom ofthe hairpin bent ditch, the tops of the first-class water flow adjusting plates are lower than the water surface, the second-class water flow adjusting plates are arranged above the substrate, and thetops of the second-class water flow adjusting plates are higher than the water surface; the first-class water flow adjusting plates and the second-class water flow adjusting plates are sequentially arranged at intervals. The system provided by the invention has a good removal effect on nitrogen and phosphorus in tail water of a sewage plant.

Description

technical field [0001] The invention belongs to the technical field of biological treatment of sewage characterized by utilizing plants, and in particular relates to a treatment system for tail water of a sewage plant. Background technique [0002] With the continuous advancement of the urbanization process and the improvement of people's living standards, a large number of people have poured into cities, and the scale of cities and towns has also continued to expand. However, while the scale of cities and towns is expanding, the environmental pressure brought by the population problem is also increasing ("Research on the Problems and Countermeasures of Urban Water and Soil Conservation", Song Meiyan, Heilongjiang Water Conservancy Science and Technology, 2018, Vol. 46, No. 7, No. 279 Page Summary Lines 1-2, Publication Date December 31, 2018), such as the increasing amount of urban sewage. [0003] At present, the tail water of most sewage treatment plants in my country is...

Claims

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Application Information

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IPC IPC(8): C02F3/32
CPCC02F3/32C02F2301/08
Inventor 李振轮毛鑫羽汪恩旭李佳冰
Owner SOUTHWEST UNIVERSITY