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

AI Technical Summary

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 par

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

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Example 1

[0021] like figure 2 and image 3 As shown, the present invention provides a UASB reactor, including a sludge bed with particulate sludge, a sludge suspension layer with a flocculating sludge, and a clear water area that houses treated, referring to figure 1 It is understood that the innovation of the present invention is that four return pipes 2 are provided in the reactor 1, and the water port of the return tube 2 is connected to the water region, and the effluent port of the return tube 2 is disposed in the Sprinter bed, from figure 2 As can be seen, the inlet of the return pipe 2 is disposed at the upper portion of the reactor 1, or near the top position, the outlet of the return tube 2 is disposed at the lower portion of the reactor 1 or near the bottom position.

[0022] The inlet of the four of the return pipes 2 is evenly distributed over the circumference, and the angle between the two return pipes 2 is 90 °, and the outlet of the four of the return pipe...

Example Embodiment

[0048] Example 2

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

Example Embodiment

[0050] Example 3

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

[0052] The treatment effect of the reactor using the present invention is:

[0053] Nitrate wastewater was treated with nitrate wastewater using the culture of the present invention, and in Examples 1-3 can reach 95% nitrate average removal rate and 90% of COD average removal rate.

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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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