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An anaerobic biological treatment method for high-concentration organic wastewater

A technology of organic wastewater and anaerobic organisms, which is applied in the field of anaerobic biological treatment, can solve the problems that the anaerobic treatment process cannot maintain high efficiency, cannot effectively realize three-phase separation, and reactor blockage treatment efficiency, etc., to achieve enhanced biodegradability, Good degradability and convenient management

Active Publication Date: 2016-04-13
江苏三强环境工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still some problems in this type of improved anaerobic reactor, including: (1) Granular sludge is easy to foul when treating wastewater containing suspended solids, calcium, magnesium, etc., resulting in reactor blockage and a sharp drop in treatment efficiency. Re-add activated sludge after shutdown and cleaning
(2) It is difficult to form an internal circulation when starting, and the starting time is long, and a large amount of floating mud is easy to accumulate under the gas collecting tank, which blocks the gas collecting tank, making it difficult to maintain a stable and efficient lifting
(3) When treating organic wastewater containing toxic substances, the methanogenic bacteria in the traditional single-phase anaerobic reactor directly contact the toxic substances, and their proliferation rate is often lower than the decay rate, resulting in the anaerobic treatment process cannot maintain long-term high efficiency
(4) At present, the three-phase separator cannot effectively achieve three-phase separation at a higher flow rate, and the anaerobic reactor is prone to serious sludge loss

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for anaerobic biological treatment of high-concentration organic wastewater, comprising the following steps:

[0028]1) Part of the waste water enters the conical cylinder from the bottom of the two-phase internal circulation anaerobic reactor through the first liquid distributor through the inlet pump, and the other part enters the conical cylinder vertically from the bottom through the bottom liquid inlet branch pipe from the second liquid distributor. In the cylinder, the two parts of waste water spiral up into the acidification reaction chamber of the anaerobic reactor under the action of the riser, and are respectively installed at one-fourth, one-half and three-quarters of the total height of the acidification reaction chamber. One stirring device and three stirring devices are arranged orthogonally between each other, and the three stirring devices operate alternately. After a single stirring device runs for 5 hours, it is idle for 2 hours, and then conti...

Embodiment 2

[0041] A method for anaerobic biological treatment of high-concentration organic wastewater, comprising the following steps:

[0042] 1) Part of the waste water enters the conical cylinder from the bottom of the two-phase internal circulation anaerobic reactor through the first liquid distributor through the inlet pump, and the other part enters the conical cylinder vertically from the bottom through the bottom liquid inlet branch pipe from the second liquid distributor. In the cylinder, the two parts of waste water spiral up into the acidification reaction chamber of the anaerobic reactor under the action of the riser, and are respectively installed at one-fourth, one-half and three-quarters of the total height of the acidification reaction chamber. One stirring device and three stirring devices are arranged orthogonally between each other, and the three stirring devices are operated alternately. After a single stirring device runs for 6 hours, it is idle for 2 hours, and then...

Embodiment 3

[0055] A method for anaerobic biological treatment of high-concentration organic wastewater, comprising the following steps:

[0056]1) Part of the waste water enters the conical cylinder from the bottom of the two-phase internal circulation anaerobic reactor through the first liquid distributor through the inlet pump, and the other part enters the conical cylinder vertically from the bottom through the bottom liquid inlet branch pipe from the second liquid distributor. In the cylinder, the two parts of waste water spiral up into the acidification reaction chamber of the anaerobic reactor under the action of the riser, and are respectively installed at one-fourth, one-half and three-quarters of the total height of the acidification reaction chamber. One stirring device and three stirring devices are arranged orthogonally between each other, and the three stirring devices operate alternately. After a single stirring device runs for 5.5 hours, it is idle for 2 hours, and then con...

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Abstract

The invention provides an anaerobic biological treatment method of high-concentration organic wastewater. The method implements anaerobe split-phase separation, and has the advantages of favorable granulation effect, high microbial biomass, high activity, high reactor load, high starting speed, and the like. The method can maximally reserve the high-activity sludge to form the optimal microbial community structure, thereby enhancing the biodegradability and achieving the goal of simultaneously decomposing organic matters and sludge.

Description

technical field [0001] The invention relates to an anaerobic biological treatment method for high-concentration organic wastewater, which belongs to the field of organic wastewater treatment. Background technique [0002] At present, in the field of high-concentration refractory organic wastewater and sewage treatment technology, because high-concentration refractory organic wastewater has the characteristics of high pollutant concentration, complex composition, high toxicity, and high salinity, the wastewater has poor biodegradability and is difficult to be decomposed by microorganisms. . Therefore, conventional wastewater treatment methods are difficult to purify or cannot meet the technical and economic requirements of this type of wastewater purification treatment. With the continuous development of modern environmentally friendly sewage treatment technology, the treatment of high-concentration organic wastewater is an urgent problem to be solved in the field of environ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/28C02F3/30
CPCY02E50/30
Inventor 吕锡元吕飞龙
Owner 江苏三强环境工程有限公司
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