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Anaerobic-sequencing batch biofilm reactor-artificial wetland method for treating piggery wastewater

A sequencing batch type membrane biology and sequencing batch type biofilm technology are applied in chemical instruments and methods, animal husbandry wastewater treatment, water/sewage multi-stage treatment, etc. The problem of high content, to achieve the effect of reducing treatment costs, reducing floor space, and high sludge concentration

Inactive Publication Date: 2010-09-01
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The object of the present invention is to provide a kind of anaerobic-sequencing batch type membrane bioreactor-constructed wetland method for treating pig farm wastewater, to solve the problems existing in the above-mentioned wastewater treatment method. For pig farm wastewater, the water quality and quantity vary greatly and the ratio of nutrient elements The characteristics of imbalance and high ammonia nitrogen content, and the deep denitrification and deep removal of organic matter are also considered. After the aquaculture wastewater is treated, the discharged wastewater meets the GB 18596-2001 "Discharge Standard of Pollutants for Livestock and Poultry Breeding Industry"

Method used

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  • Anaerobic-sequencing batch biofilm reactor-artificial wetland method for treating piggery wastewater
  • Anaerobic-sequencing batch biofilm reactor-artificial wetland method for treating piggery wastewater
  • Anaerobic-sequencing batch biofilm reactor-artificial wetland method for treating piggery wastewater

Examples

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Effect test

Embodiment 1

[0023] Example 1: The raw water is wastewater from a large-scale pig farm, and the daily treatment capacity is 150m 3 / d, raw water quality: COD5000~10000mg / L, NH 4 + -N 400~1500mg / L TP30~100mg / L. The raw water enters the hydrolytic acidification tank, and then enters the anaerobic reactor, using the metabolic function of heterotrophic bacteria to decompose the refractory organic matter into easily biodegradable small molecule organic matter, and at the same time mineralize the organic nitrogen, degrade and remove most of the easily biodegradable organic matter . But the anaerobic part does not remove NH 4 + -N, the anaerobic environment increases TP instead, and the effluent COD of the anaerobic reactor is 500-1000mg / L, NH 4 + -N 400~1500mg / L TP 50~150mg / L; After the effluent from the anaerobic reactor passes through the SBBR reactor, determine the operating conditions of the SBBR: water inflow for 1h, anaerobic for 3h, aerobic for 7h, precipitation for 0.5h, and draina...

Embodiment 2

[0024] Example 2: The raw water is wastewater from a certain large-scale pig farm, and the daily treatment capacity is 150m 3 / d, raw water quality: COD4000~8000mg / L, NH 4 + -N 320~1200mg / L TP24~80mg / L. The raw water enters the hydrolytic acidification tank, and then enters the anaerobic reactor, using the metabolic function of heterotrophic bacteria to decompose the refractory organic matter into easily biodegradable small molecule organic matter, and at the same time mineralize the organic nitrogen, degrade and remove most of the easily biodegradable organic matter . But the anaerobic part does not remove NH 4 + -N, the anaerobic environment increases TP instead, and the effluent COD of the anaerobic reactor is 400-800mg / L, NH 4 +-N320~1200mg / L TP 40~120mg / L; After the effluent from the anaerobic reactor passes through the SBBR reactor, determine the operating conditions of the SBBR: water inflow for 1h, anaerobic for 3h, aerobic for 7h, precipitation for 0.5h, and dra...

Embodiment 3

[0025] Example 3: The raw water is wastewater from a certain large-scale pig farm, and the daily treatment capacity is 150m 3 / d, raw water quality: COD6000~12000mg / L, NH 4 + -N 480~1800mg / L TP36~120mg / L. The raw water enters the hydrolytic acidification tank, and then enters the anaerobic reactor, using the metabolic function of heterotrophic bacteria to decompose the refractory organic matter into easily biodegradable small molecule organic matter, and at the same time mineralize the organic nitrogen, degrade and remove most of the easily biodegradable organic matter . But the anaerobic part does not remove NH 4 + -N, the anaerobic environment increases TP instead, and the effluent COD of the anaerobic reactor is 600-1200mg / L, NH 4 + -N 480~1800mg / L TP 60~180mg / L; After the effluent from the anaerobic reactor passes through the SBBR reactor, determine the operating conditions of the SBBR: water inflow for 1h, anaerobic for 3h, aerobic for 7h, precipitation for 0.5h, an...

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Abstract

The invention relates to an anaerobic-sequencing batch biofilm reactor-artificial wetland method for treating piggery waste water, which is characterized by comprising the following steps: (1) a sewage collecting pipe network collects waste water; (2) the anaerobic environment in a hydrolytic acidification tank enables the organic waste to be subject to biodegradation; (3) an SBBR adjusting tank can achieve the effects of adjusting water quality and water quantity; (4) the waste water is enabled to reach the requirements of GB18596-2001, Discharge Standard of Pollutants for Livestock and Poultry Breeding; and (5) the operation effect of an SBBR reactor and the energy consumption quantity are enabled to reach the optimal combination. The invention has the advantages that the occupied area is decreased; the anaerobic reactor can omit the operating unit required for stabilizing sludge, thereby further decreasing the occupied area and the treatment cost; the waste water treatment effect is better; high denitrification efficiency and stable treatment effect are achieved; and finally, the treatment performance of the combined artificial wetland is fully used to carry out the advanced treatment of denitrification and dephosphorization and meanwhile achieve the effect of reducing the energy consumption of the SBBR system.

Description

technical field [0001] The invention relates to a method for treating pig farm wastewater, in particular to an anaerobic-sequencing batch membrane bioreactor-constructed wetland method for treating pig farm wastewater. Background technique [0002] In the past two decades, especially since the 1990s, my country's animal husbandry has developed rapidly. Animal husbandry has become the most active growth point and the main pillar industry in China's rural economy. In the past, the animal husbandry industry was dominated by scattered farm animal husbandry, but now, large-scale farm production has taken a dominant position. Large-scale centralized breeding of livestock and poultry is conducive to improving feeding technology, epidemic prevention ability and management level. Compared with traditional breeding methods (farmers' free-range breeding), large-scale breeding can greatly improve production efficiency and feed conversion rate, reduce production costs, and thus increase...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F103/20
Inventor 吴永明万金保
Owner NANCHANG UNIV
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