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Internal circulation hydrolysis reactor and process thereof

A hydrolysis reactor and internal circulation technology, applied in the direction of anaerobic digestion treatment, can solve the problems of difficult to achieve inorganic mud sand and organic matter, and achieve the effect of improving the efficiency of hydrolysis and acidification, improving the utilization rate of carbon sources, and ensuring the residence time.

Active Publication Date: 2012-11-14
BEIJING MUNICIPAL RES INST OF ENVIRONMENT PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is that the hydrolytic acidification reactor in the prior art is difficult to realize efficient separation of inorganic mud sand and organic matter, the utilization rate of carbon source is still low, and the organic matter in the sewage is easy to flow up in the reaction zone. Settled to the bottom of the reaction zone, thereby reducing the hydrolysis and acidification efficiency of the reaction zone, and the sludge reduction rate is low

Method used

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  • Internal circulation hydrolysis reactor and process thereof
  • Internal circulation hydrolysis reactor and process thereof
  • Internal circulation hydrolysis reactor and process thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0052] The internal circulation hydrolysis reactor described in this embodiment is as figure 1 shown, including:

[0053] Reactor outer cylinder 5, the top of described reactor outer cylinder 5 is a cylinder, is provided with water outlet 3 on the upper side wall of described cylinder; Be connected with described water outlet and be provided with outlet pipe 4; Below the cylinder and connected to the lower edge of the cylinder, there is an outer frustum-shaped cylinder 17, which is arranged coaxially with the cylinder and gradually moves inward from top to bottom along the axial direction. Contraction, on the side wall of the outer cylindrical tube 17, a mud discharge port 15 and a water inlet 2 are provided; on the bottom surface of the outer cylindrical tube 17, a sand discharge pipe 1 is provided;

[0054] A central cylinder, the central cylinder is arranged in the reactor outer cylinder 5, the central cylinder is composed of an upper central cylinder 6, a lower central cy...

Embodiment 2

[0065] The internal circulation hydrolysis reactor described in this embodiment is as figure 1 shown, including:

[0066] Reactor outer cylinder 5, the top of described reactor outer cylinder 5 is a cylinder, is provided with water outlet 3 on the upper side wall of described cylinder; Be connected with described water outlet and be provided with outlet pipe 4; Below the cylinder and connected to the lower edge of the cylinder, there is an outer frustum-shaped cylinder 17, which is arranged coaxially with the cylinder and gradually moves inward from top to bottom along the axial direction. Contraction, on the side wall of the outer cylindrical tube 17, a mud discharge port 15 and a water inlet 2 are provided; on the bottom surface of the outer cylindrical tube 17, a sand discharge pipe 1 is provided;

[0067] A central cylinder, the central cylinder is arranged in the reactor outer cylinder 5, the central cylinder is composed of an upper central cylinder 6, a lower central cyli...

Embodiment 3

[0079] The internal circulation hydrolysis reactor described in this embodiment is as figure 2 shown, including:

[0080] Reactor outer cylinder 5, the top of described reactor outer cylinder 5 is a cylinder, is provided with water outlet 3 on the upper side wall of described cylinder; Be connected with described water outlet and be provided with outlet pipe 4; Below the cylinder and connected to the lower edge of the cylinder, there is an outer frustum-shaped cylinder 17, which is arranged coaxially with the cylinder and gradually moves inward from top to bottom along the axial direction. Contraction, on the side wall of the outer cylindrical tube 17, a mud discharge port 15 and a water inlet 2 are provided; on the bottom surface of the outer cylindrical tube 17, a sand discharge pipe 1 is provided;

[0081] A central cylinder, the central cylinder is arranged in the reactor outer cylinder 5, the central cylinder is composed of an upper central cylinder 6, a lower central c...

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Abstract

The invention discloses an internal circulation hydrolysis reactor. The internal circulation hydrolysis reactor comprises a central barrel, a guide barrel and an outer barrel which are arranged from inside to outside, wherein a propeller is arranged in the central barrel and used for controlling the ascending velocity of wastewater in the central barrel to be 20-60m / h. The wastewater quickly penetrates through the central barrel and flows into the outer barrel through the guide barrel to form the ascending flow state, the wastewater and sludge are synchronously hydrolyzed, solid is separated from liquid, the sludge in a sludge hydrolysis region enters the central barrel through a backflow seam, and then, the sludge is uniformly mixed with water and is separated from sand. The reactor and a process of the reactor integrate the functions of carbon source development, sludge reduction, sand removal and the like, and are widely suitable for the preprocessing process of the low-concentration wastewater.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and in particular relates to an internal circulation hydrolysis reactor and a process based on the internal circulation hydrolysis reactor. Background technique [0002] my country's urban sewage has the characteristics of high inorganic suspended solids content and low carbon-nitrogen ratio. According to statistics, the SS / BOD of urban sewage in the United States 5 The ratio is about 1.1, while my country's urban sewage SS / BOD 5 The number of sewage treatment plants with a ratio higher than 1.1 is as high as 78%. In addition, the urban sewage BOD in the United States 5 The ratio of / TN is generally above 5.0, while the BOD of urban sewage in my country 5 The proportion of sewage treatment plants with a / TN ratio of less than 3.0 is as high as 40%, which leads to the lack of sufficient carbon sources in the subsequent denitrification process of sewage, and the removal rate of total nitrogen is ...

Claims

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Application Information

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IPC IPC(8): C02F3/28
Inventor 熊娅徐晶宋英豪朱民林秀军梁康强
Owner BEIJING MUNICIPAL RES INST OF ENVIRONMENT PROTECTION
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