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Anaerobic ammonium oxidation biochemical treatment method for coking waste water

A technology of anaerobic ammonium oxidation and coking wastewater, which is applied in the field of anaerobic ammonium oxidation biochemical treatment of coking wastewater, can solve the problems that the total nitrogen in the effluent cannot meet the national effluent standard and the operation cost is high, and achieve low infrastructure and operation costs and aeration volume The effect of less, small footprint

Active Publication Date: 2018-06-22
济宁市孚源环保科技有限公司
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Problems solved by technology

[0006] In order to overcome the fact that the total nitrogen in the effluent cannot meet the national effluent standard when the existing activated sludge biotechnology treats coking wastewater, the operating cost is high,

Method used

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  • Anaerobic ammonium oxidation biochemical treatment method for coking waste water
  • Anaerobic ammonium oxidation biochemical treatment method for coking waste water

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example 1

[0039] In a coking wastewater treatment plant, the influent design water volume is 10000m³ / day, the influent COD concentration is 3500mg / L, BOD concentration is 1000mg / L, NH4-N concentration is 260mg / L, TN position is 300mg / L, TP is 2mg / L. Using the present invention, the added cylindrical suspension carrier is characterized by: the material is HDPE, the specific gravity is 0.95g / cm3, the diameter is 25mm, the height is 10mm, the porosity is ≥88%, the bulk density is ≥100kg / m³, and the effective specific surface area is ≥ 500㎡ / m³; flat screens are used to ensure that suspended carriers do not accumulate on the cross-water section; the HRT in the pre-anoxic zone of the project is 2h, the HRT in the aerobic zone before MBBR is 3h, the HRT in the pre-anoxic zone is 4h, and the MBBR subzone The HRT of the nitrification aerobic zone is 6h, the HRT of the MBBR anaerobic ammonia oxidation zone is 8h, the HRT of the aerobic zone after MBBR is 3h, the HRT of the post-sludge anoxic zone ...

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Abstract

The invention discloses an anaerobic ammonium oxidation biochemical treatment method for coking waste water, and belongs to the field of coking waste water treatment. A water inlet channel, a hypoxiapreconditioning zone, an MBBR front aerobic zone, a prepositive anoxic zone, an MBBR nitrosation aerobic zone, an MBBR anaerobic ammonium oxidation zone, an MBBR rear aerobic zone, a sludge postpositive anoxic zone, a postpositive sludge aerobic zone and an advective condensation zone are involved; the prepositive anoxic zone is communicated with the MBBR nitrosation aerobic zone through a squarewater passing hole formed in the upper side of one side end of a separation wall arranged between the prepositive anoxic zone and the MBBR nitrosation aerobic zone, and a stirring device is arranged in the prepositive anoxic zone; the MBBR nitrosation aerobic zone is communicated with the MBBR anaerobic ammonium oxidation zone through a square water passing hole formed in the upper side of one side end of a separation wall arranged between the MBBR nitrosation aerobic zone and the MBBR anaerobic ammonium oxidation zone; the MBBR nitrosation aerobic zone is communicated with the MBBR rear aerobic zone through a square water passing hole formed in the upper side of one side end of a separation wall arranged between the MBBR nitrosation aerobic zone and the MBBR rear aerobic zone. According to the method, prepositive anaerobic ammonium oxidation and postpositive denitrification nitrogen removal are combined to ensure that the total nitrogen mount of the water discharged to an external environment after coking waste water treatment is conducted reaches standards.

Description

Technical field [0001] The invention relates to a method for anaerobic ammonia oxidation biochemical treatment of coking wastewater, which belongs to the field of industrial sewage treatment. Background technique [0002] Pollutants contained in coking wastewater include phenols, polycyclic aromatic compounds, and heterocyclic compounds containing nitrogen, oxygen, and sulfur. It is a typical industrial wastewater containing organic compounds that are difficult to degrade. The easily degradable organics in coking wastewater are mainly phenolic compounds and benzene compounds, and arsenic, naphthalene, furan and miazoles are degradable organics. The refractory organics mainly include arsenic, carbazole, biphenyl, terphenyl and so on. The water quality of coking wastewater varies greatly due to the large differences in the process flow and production operation methods of each plant. The water quality of ammonia distilling wastewater from general coking plants is as follows: CODcr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30C02F101/16
CPCC02F3/30C02F3/302C02F2301/08C02F2203/006C02F2101/16Y02W10/10
Inventor 牛学义牛卉
Owner 济宁市孚源环保科技有限公司
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