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A method for advanced treatment of urban sewage based on improved denitrification filter column

A technology for advanced treatment and urban sewage, applied in biological water/sewage treatment, water/sludge/sewage treatment, anaerobic digestion treatment, etc. problem, to achieve the effect of low investment, low operating cost and good removal effect

Active Publication Date: 2022-03-04
成都之和环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the technical problems of high investment, high operation cost, and poor removal effect of COD and total nitrogen in the existing advanced treatment of urban sewage, and provides a method for advanced treatment of urban sewage based on improved denitrification filter column

Method used

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  • A method for advanced treatment of urban sewage based on improved denitrification filter column
  • A method for advanced treatment of urban sewage based on improved denitrification filter column
  • A method for advanced treatment of urban sewage based on improved denitrification filter column

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specific Embodiment approach 1

[0025] Specific embodiment one: the method for the advanced treatment of urban sewage based on the improved denitrification filter column of the present embodiment is carried out according to the following steps:

[0026] 1. Equipped with improved denitrification filter column sewage advanced treatment system: the improved denitrification filter column water treatment system includes water inlet tank 1, peristaltic pump 2, water inlet valve 3, improved denitrification filter column 4, backwash valve 5;

[0027] A supporting layer 4-2 is set in the lower part of the shell 4-1 of the improved denitrification filter column 4, a packing layer 4-3 is set on the supporting layer 4-2, and a filling layer is set on the bottom of the shell 4-1. A water outlet 4-4, and a water outlet 4-5 is arranged on the upper part of the side wall of the housing 4-1; wherein the supporting layer 4-2 is made of quartz sand, and the packing layer 4-3 is also made of quartz sand;

[0028] The water inle...

specific Embodiment approach 2

[0034] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the particle diameter of the quartz sand constituting the supporting layer 4-2 in the step one is 1~2cm, and the thickness of the supporting layer 4-2 is 10~20cm; The specific embodiment one is the same.

specific Embodiment approach 3

[0035] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that in step one, the particle size of the quartz sand constituting the packing layer 4-3 is 2-4 mm, and the thickness of the packing layer 4-3 is 60-80 cm; Others are the same as in the first or second embodiment.

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Abstract

A method for advanced treatment of urban sewage based on an improved denitrification filter column, which relates to a method for advanced treatment of urban sewage. It is to solve the problems of high investment, high operating cost, and poor removal effect of COD and total nitrogen in existing urban sewage advanced treatment. technical problem. This method: 1. Equip the improved denitrification filter column sewage advanced treatment system; 2. Start the improved denitrification filter column water treatment system. After the startup is completed, the quartz sand packing of the improved denitrification filter column is covered with biofilm, and the biofilm contains Denitrifying bacteria, heterotrophic bacteria and manganese oxidizing bacteria, and contain biological manganese oxides; 3. Input the urban sewage to be advanced treatment into the improved denitrification filter column sewage advanced treatment system for stable treatment. The average removal rate of COD and total nitrogen after treatment is higher than 53.72% and 46.20%. It is lower than the first-class A standard in the "Pollutant Discharge Standards for Urban Sewage Treatment Plants". It can be used in the field of advanced treatment of urban sewage.

Description

technical field [0001] The invention relates to a method for advanced treatment of urban sewage, which belongs to the field of urban sewage treatment. Background technique [0002] With my country's increasing emphasis on water environment quality, many urban sewage treatment plants have been built in recent years, and strict discharge standards have been formulated, such as "Pollutant Discharge Standards for Urban Sewage Treatment Plants" (GB 18918-2002). However, the water quality of some sewage treatment plants cannot stably meet the first-class A standard, especially the sewage treatment plants at the county and township levels, resulting in a large amount of pollutants being discharged into rivers and lakes. The use of a large amount of chemical fertilizers and pesticides, and the discharge of rural domestic sewage without treatment have also caused water pollution. At the same time, because the first-class A standard in my country's current "Pollutant Discharge Standa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/28C02F101/30
CPCC02F3/2806C02F2303/14C02F2101/30
Inventor 程庆锋刘宗杨李凤娇黄杨能子礼超
Owner 成都之和环保科技有限公司
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