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Treatment technology suitable for high ammonia nitrogen dispersed domestic sewage

A domestic sewage and treatment process technology, applied in the direction of biological water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problem of difficult cultivation of nitrifying bacteria, large footprint, and nitrification Weak capacity and other problems, to achieve the effect of facilitating attachment growth, strengthening ammonia nitrogen nitrification and decarburization ability, and facilitating attachment growth

Active Publication Date: 2018-08-03
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the disadvantages of the existing denitrification technology, such as weak nitrification ability of nitrifying bacteria, difficulty in cultivating nitrifying bacteria, competition with decarburizing heterooxygen bacteria, large floor area, and need for additional chemical agents, etc. A Simple, Efficient and Intensive Treatment Method for Dispersed Domestic Sewage with High Ammonia Nitrogen

Method used

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  • Treatment technology suitable for high ammonia nitrogen dispersed domestic sewage
  • Treatment technology suitable for high ammonia nitrogen dispersed domestic sewage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A new process for the treatment of high-ammonia-nitrogen dispersed domestic sewage, which can be used as Figure 1-2 The integrated processing equipment is realized, and the steps are as follows:

[0035] 1. According to the technological process of the invention, the integrated treatment equipment is sequentially divided into five areas, including the homogeneous adjustment area T for adjusting water quality and quantity, the aerobic decarbonization area O for removing organic matter in sewage, and the area for denitrification Anoxic denitrification zone A, superoxide nitrification zone SO for removing ammonia nitrogen, and precipitation zone C for removing suspended solids.

[0036] 2. Install linear elastic three-dimensional fillers in the aerobic decarburization zone O and anoxic denitrification zone A, wherein the aerobic decarburization zone O is composed of linear elastic three-dimensional fillers with a unit diameter of Φ150mm and a spacing of 50mm In contact w...

Embodiment 2

[0039] Treatment of a high ammonia nitrogen dispersed domestic sewage

[0040] 1. Fill the honeycomb ceramic filler with 1.0% iron doping mass fraction into the superoxide reaction zone SO of the equipment.

[0041] 2. The scattered domestic sewage in a certain rural area is passed into the integrated treatment equipment in Example 1, and the influent flow rate is 2m 3 / d, the average water quality of the measured sewage is: COD=164mg / L, TN=148mg / L, NH 3 - N = 107 mg / L, TP = 9.5 mg / L. The COD / TN ratio of sewage is about 1, and the ammonia nitrogen concentration accounts for 72.4% of the total nitrogen concentration.

[0042] 3. Adjust the aeration volume of the blower so that the gas-water flow ratio in the SO in the superoxide nitrification zone is 3:1.

[0043] Processing effect:

[0044] After the above system is stable, take out the water for testing. The same process parameters were used to treat the same sewage by contact oxidation as a comparative experiment. The ...

Embodiment 3

[0048] Treatment of public toilet sewage in a tourist attraction

[0049] 1. Fill the honeycomb ceramic filler with 5.0% iron doping mass fraction into the superoxide reaction zone SO of the equipment.

[0050] 2. The domestic sewage of a public toilet in a tourist attraction is passed into the integrated decentralized domestic sewage treatment equipment in Example 1, and the influent flow rate is 2m 3 / d, the average water quality of the measured sewage is: COD=196.4mg / L, TN=102mg / L, NH 3 - N = 96.8 mg / L, TP = 12.68 mg / L. The COD / TN ratio of sewage is about 2, and the ammonia nitrogen concentration accounts for 94.9% of the total nitrogen concentration.

[0051] 3. Adjust the aeration rate of the blower so that the gas-water flow ratio in the SO in the superoxide nitrification zone is 4:1.

[0052] Processing effect:

[0053] After the above system is stable, take out the water for testing. The initial concentration and removal effect of pollutants in water are shown in ...

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Abstract

The invention relates to a treatment technology suitable for high ammonia nitrogen dispersed domestic sewage. The technology comprises the following steps: the high ammonia nitrogen domestic sewage isfirstly homogenized by a regulating tank, then flows into a circulating biological reaction area composed of an aerobic decarbonization zone, an anoxic denitrification zone and a super oxygen nitrification zone, is cyclically treated multiple times, is treated by a precipitation area, and is discharged. Nitrifying bacteria and decarburization heterotrophic grow in the super oxygen area and an aerobic area separately, so the mutual competition is reduced. Hydraulic driving needed by the circulating biological reaction area is provided by the gas stripping effect generated by strong aeration ofthe super oxygen nitrification zone without mounting a stirred reactor. The sewage undergoes a super oxygen-aerobic-anoxic cycle multiples to achieve ammonia nitrogen nitration conversion and organicmatter removal. Compared with the prior art, the technology in the invention has the advantages of strong nitrification ability, efficient and intensive process, simplicity in operation and maintenance, high efficiency in treatment of the high ammonia nitrogen dispersed domestic sewage, and realization of the recycling of nitrogen and phosphorus in the dispersed sewage.

Description

technical field [0001] The invention relates to a method for treating domestic sewage in rural areas, in particular to a treatment process suitable for dispersing domestic sewage with high ammonia nitrogen content. Background technique [0002] As of the end of 2016, the national rural domestic sewage treatment rate was only 22%. Rural decentralized domestic sewage is generally composed of kitchen sewage, fecal sewage, and washing sewage. The scale of sewage is small, and the concentration of nitrogen and phosphorus (especially ammonia nitrogen) is high. Water quality and quantity Unstable, high hydraulic impact load, difficult to remove nitrogen and phosphorus. Most of my country's rural areas are scattered and far away from cities, so they cannot be directly included in the municipal sewage pipe network. Rural domestic sewage is directly discharged without proper treatment, which will cause adverse effects on the surrounding ecological environment. At the same time, dispe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/16C02F101/30
CPCC02F1/52C02F3/02C02F3/107C02F3/28C02F9/00C02F2001/007C02F2101/16C02F2101/30C02F2209/14C02F2209/16C02F2209/22C02F2301/08C02F2303/02
Inventor 吴德礼彭澍晗谢宇张亚雷
Owner TONGJI UNIV
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