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Nitrogen-containing organic wastewater treatment system and method thereof

A technology for organic waste water treatment and waste water, which is applied in biological water/sewage treatment, flotation water/sewage treatment, water/sewage multi-stage treatment, etc. Membrane is difficult to attach, etc.

Inactive Publication Date: 2018-06-15
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this invention also has some problems: the suspended filler added in the first reaction zone of the aerobic reactor has the effect of attaching biofilm and strengthening denitrification and carbon removal, but the aerobic reaction zone after the first reaction zone of the aerobic reactor is caused by internal factors. The reduction of organic matter in wastewater makes it difficult to meet the growth needs of a large number of microorganisms, so it is difficult to attach biofilm to the suspended filler, and the added suspended filler has little effect and increases the investment cost

Method used

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  • Nitrogen-containing organic wastewater treatment system and method thereof
  • Nitrogen-containing organic wastewater treatment system and method thereof
  • Nitrogen-containing organic wastewater treatment system and method thereof

Examples

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Embodiment 1

[0166] A comprehensive sewage treatment project in a process park adopts the treatment system of the present invention to treat nitrogen-containing organic wastewater. First, put sludge in the anoxic reaction pool and aerobic reaction pool respectively, and select the sludge to be the nitrogen-containing organic wastewater to be treated. Wastewater cultured sludge. Then, the nitrogen-containing organic wastewater flows into the pretreatment tank through the first water inlet pipe for pretreatment, wherein, according to the water quality of the nitrogen-containing organic wastewater, the pretreatment process is selected, and the pretreatment process is selected from the oil separation process and the coagulation process. , sedimentation process, air flotation process, anaerobic process, etc. in one or more combinations. Then, the pretreated wastewater flows into the anoxic reaction tank through the first outlet pipe through the water inlet for anoxic treatment, and the agitator...

Embodiment 2

[0172] A comprehensive sewage treatment project in a process park adopts the treatment system of the present invention to treat nitrogen-containing coking wastewater, and first puts sludge from a coking plant wastewater treatment project into the anoxic reaction pool and the aerobic reaction pool respectively. Then, according to the water quality of the nitrogen-containing coking wastewater, the nitrogen-containing coking wastewater flows into the oil separation + air flotation + anaerobic combined pretreatment tank through the first water inlet pipe for pretreatment. Then, the pretreated wastewater flows into the anoxic reaction tank through the first outlet pipe through the water inlet for anoxic treatment, and the agitator in the anoxic reaction tank continues to stir with a stirring speed of 800r / min and a stirring power of 5w / m 3 . The anoxic treatment conditions in the anoxic reaction tank are: pH 8.0, reaction temperature 27°C, residence time 2h, sludge concentration 5g...

Embodiment 3

[0178] A comprehensive sewage treatment project in a process park adopts the treatment system of the present invention to treat nitrogen-containing organic wastewater. First, put sludge in the anoxic reaction pool and aerobic reaction pool respectively, and select the sludge to be the nitrogen-containing organic wastewater to be treated. Wastewater cultured sludge. Then, according to the water quality of the comprehensive sewage in the industrial park, the comprehensive sewage flows into the coagulation + sedimentation + anaerobic combined pretreatment tank through the first water inlet pipe for pretreatment. Then, the pretreated wastewater flows into the anoxic reaction tank through the first outlet pipe through the water inlet for anoxic treatment. The agitator in the anoxic reaction tank continues to stir with a stirring speed of 700r / min and a stirring power of 3w / m 3 . The anoxic treatment conditions in the anoxic reaction tank are: pH 7.4, reaction temperature 28°C, res...

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Abstract

The invention provides a nitrogen-containing organic wastewater treatment system. The system includes a pretreatment tank, an anoxic reaction tank, an aerobic reaction tank and a sedimentation tank which are sequentially connected through a pipeline, the aerobic reaction tank is sequentially provided with a first reaction zone and a second reaction zone along a water discharging direction, a suspension carrier is arranged in the first reaction zone, and a trap is arranged in the second reaction zone. The invention further provides a nitrogen-containing organic wastewater treatment method. Thesuspension carrier is added into the independent zone at the front end of the aerobic reaction tank to form a high-biomass and high-load zone in order to enhance the denitrification and decarbonization treatment effect of high-concentration organic wastewater. The system and the method which use the suspension carrier achieve creation of a rich biological phase, large biomass and a high nitrification and denitrification efficiency, can inhibit sludge swelling, and are simple, economical and efficient. The system and the method also can be used to upgrade and reconstruct sewage treatment facilities.

Description

technical field [0001] The invention belongs to the technical field of sewage biological treatment, and relates to a nitrogen-containing organic wastewater treatment system and a method thereof, in particular to a system and a method for intensively treating nitrogen-containing organic wastewater by using suspended fillers. Background technique [0002] According to statistics, as of the end of June 2015, there were 3,802 sewage treatment plants in my country, with a sewage treatment capacity of 161 million cubic meters per day. Generally, urban sewage contains 20-50 mg / L of nitrogenous compounds, of which 60% of nitrogen in fresh domestic sewage is organic nitrogen, 40% is ammonia nitrogen, and the content of nitrate and nitrite nitrogen is less than 1%. Industrial wastewater is an important source of nitrogen content in urban sewage. Wastewater produced by chemical fertilizers, coke / chemical, tanning, pharmaceutical, slaughtering and meat processing plants contains high co...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F101/38C02F101/16
CPCC02F1/24C02F1/40C02F1/52C02F3/28C02F3/30C02F3/302C02F9/00C02F2001/007C02F2101/16C02F2101/38
Inventor 魏宏斌邹平刘霞刘森江闯
Owner TONGJI UNIV
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