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UASB reactor and hydraulic control method thereof

A technology of reactors and water pumps, applied in chemical instruments and methods, adjustment methods of biological treatment, biological water/sewage treatment, etc. The problem that the filter will not reach the best processing state can achieve the effect of improving the removal efficiency

Pending Publication Date: 2021-12-14
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, a single return pipe leads to uneven distribution of water flow in the sludge bed. As a result, the sludge is stimulated by the water flow in different degrees, resulting in different particle sizes of sludge particles in the sludge bed, and the efficiency and rate of sewage treatment by granular sludge are also different. , the reactor will not reach the optimum processing state

Method used

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  • UASB reactor and hydraulic control method thereof
  • UASB reactor and hydraulic control method thereof
  • UASB reactor and hydraulic control method thereof

Examples

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Effect test

Embodiment 1

[0021] Such as figure 2 and image 3 As shown, the present invention provides a kind of UASB reactor, comprises in the reactor the sludge bed that is distributed with granular sludge, the sludge suspension layer that is distributed with flocculent sludge and accommodates the clear water area of ​​clear water after treatment, refer to figure 1 Understand that the innovation of the present invention is that four return pipes 2 are also arranged in the reactor 1, the water inlet of the return pipe 2 is connected with the clean water area, and the water outlet of the return pipe 2 is arranged at the above sludge bed, from figure 2 It can be seen from the figure that the water inlet of the return pipe 2 is set at the upper part of the reactor 1, or near the top, and the water outlet of the return pipe 2 is set at the lower part of the reactor 1 or near the bottom.

[0022] The water inlets of the four return pipes 2 are evenly distributed on the circumference, the angle between...

Embodiment 2

[0049] The difference between Embodiment 2 and Embodiment 1 is that the flow rate of each water pump 3 is controlled at 0.30 L / h.

Embodiment 3

[0051] The difference between Embodiment 3 and Embodiment 1 is that the flow rate of each water pump 3 is controlled at 0.46 L / h.

[0052] Use the treatment effect of reactor of the present invention to be:

[0053] Using the denitrification granular sludge cultivated in the present invention to treat nitrate wastewater, all of Examples 1-3 can achieve an average nitrate nitrogen removal rate of 95% and an average COD removal rate of more than 90%.

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Abstract

The invention provides a UASB reactor. The reactor internally comprises a sludge bed distributed with granular sludge, a sludge suspension layer distributed with flocculent sludge and a clear water area containing treated clear water. Furthermore, four return pipes are also arranged in the reactor, water inlets of the return pipes are connected with the clear water area, and water outlets of the return pipes are arranged on the sludge bed. The invention further provides a hydraulic control method for the water flow in the UASB reactor. According to the hydraulic control method, the efficiency and the speed of treating sewage by using granular sludge of the UASB reactor can be improved.

Description

technical field [0001] The invention relates to the technical field of industrial wastewater treatment, in particular to a UASB reactor and a hydraulic control method thereof. Background technique [0002] The UASB reactor is an upflow anaerobic sludge bed reactor, and the existing patents CN201310640875.3 and CN201510802548.2 have studied it. The working principle of the UASB reactor for industrial wastewater treatment is: refer to figure 1 , the sewage enters the bottom of the reactor through uniform water distribution, and the sewage passes through the reactor from bottom to top. There is a high-concentration and high-activity sludge bed at the bottom of the reactor, where most of the organic matter is converted into methane and carbon dioxide; The agitation of gaseous products and the adhesion of air bubbles to the sludge form a sludge suspension layer above the sludge layer; the upper part of the reactor is equipped with a three-phase separator to complete the separatio...

Claims

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Application Information

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IPC IPC(8): C02F3/00C02F3/28
CPCC02F3/2846C02F3/006C02F3/2866C02F2301/046C02F2301/043Y02W10/10
Inventor 边永欢季飞苏宁樊心想杨华文王安康张英健
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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