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A kind of municipal domestic sludge air flotation concentration treatment equipment and method

A technology for domestic sludge and treatment equipment, which is used in sludge treatment, water/sludge/sewage treatment, dehydration/drying/concentrated sludge treatment, etc. Phosphorus release reaction, less application of air flotation concentration technology, etc., to achieve the effects of extensive technological advancement, small footprint and low engineering cost

Active Publication Date: 2020-11-06
CHINA COAL TECH & ENG GRP HANGZHOU ENVIRONMENTAL PROTECTION INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Dissolved air flotation is widely used, but there are problems such as complex equipment and difficult operation and management; biological air flotation uses sludge denitrification, simple operation, low energy consumption, but long residence time, easy to generate odor and phosphorus release Reaction; vortex concave air flotation has the advantages of simple equipment, short residence time, no anaerobic reaction and phosphorus release reaction, etc., and has great advantages in concentration effect and investment cost, but the application of domestic air flotation concentration technology is less, Lack of systematic research on relevant process parameters and equipment

Method used

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  • A kind of municipal domestic sludge air flotation concentration treatment equipment and method
  • A kind of municipal domestic sludge air flotation concentration treatment equipment and method
  • A kind of municipal domestic sludge air flotation concentration treatment equipment and method

Examples

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Embodiment 1

[0037] A kind of municipal domestic sludge air flotation and thickening treatment equipment such as figure 2 As shown, the equipment includes a sludge conditioning unit that performs quantitative dosing, mixing, and reaction, and a vortex-concave air flotation and concentration unit that dissolves air in the sludge and completes the separation. In this embodiment, the sludge conditioning unit is conditioning tank 1. The conditioning tank 1 is connected to the bottom of the vortex-concave air flotation thickening tank 3 through the central feed pipe 2. A central reaction cylinder 4 is arranged at the center of the floating concentration tank 3, the middle section of the central reaction cylinder 4 is cylindrical, the upper and lower ends of the central reaction cylinder 4 are bell mouths, and the inner axis of the central reaction cylinder 4 is installed with and rotating The air flotation head 6 connected to the shaft 7 is located at the inner bottom of the central reaction cyl...

Embodiment 2

[0047] A municipal domestic sludge air flotation and thickening treatment equipment. The specific scheme is the same as that in Example 1, except that: Figure 5 An air flotation head for vortex-concave dissolved air is shown. The top end of the air flotation head is connected to a hollow rotating shaft 7. The air flotation head includes six hollow dissolved air branch pipes 63 with a plurality of micro-holes 62 on the surface, and To the hollow central disk 64 connecting the rotating shaft and the dissolved gas branch pipe. The gas-dissolved branch pipe is a curved tube with a hollow structure, and the micro-holes are arranged on the side of the gas-dissolved branch pipe away from the rotation direction, and the diameter of the micro-holes is 5 mm. The central disk is a cylinder with an opening 65 at the top that can be connected with the rotating shaft and a cavity inside. The outer wall of the central disk is evenly distributed with six side holes 61 that can be connected wi...

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Abstract

The invention relates to a sludge treatment technology, especially relates to a municipal domestic sludge air flotation concentrating treatment device and a method thereof, and belongs to the technical field of wastewater waste gas treatment. The municipal domestic sludge air flotation concentrating treatment device comprises a sludge conditioning unit for performing quantitative dosing, mixing and reacting, and a cavitation air floatation concentrating unit for dissolving air in sludge and completing separation; and an air floating head for cavitating the dissolved air is arranged in the cavitation air floatation concentrating unit, the air floating head is connected with a hollow rotating shaft, the air floating head includes a central disk communicated with the rotating shaft and a plurality of dissolved air branch tubes arranged at the side part of the central disk, and the dissolved air branch tubes have a plurality of micro-pores for ventilation. The device has the advantages oflarge single-machine processing capability, short concentrating time, simplicity, electricity consumption saving, and adjustable reflux ratio, and effectively solves the problems of large occupied area, sludge digestion, phosphorus release reaction and large and completed device in the municipal domestic sludge air flotation concentrating treatment process.

Description

Technical field [0001] The invention relates to a sludge treatment technology, in particular to a municipal domestic sludge air flotation and concentration treatment equipment and method, and belongs to the technical field of waste water and waste gas treatment. Background technique [0002] With the acceleration of my country’s urbanization process, the domestic sewage treatment rate is gradually increasing. The sludge generated in the domestic sewage treatment process has the characteristics of high water content, large volume, high organic content, poor stability, and foul smell, and the quantity is also increasing. At the same time, due to the high cost of sludge treatment and the threat of toxic substances and pathogens in the sludge to the environment and human health, the resulting environmental problems have become increasingly prominent, and the treatment and disposal of sludge has attracted great attention. [0003] The treatment technologies of urban domestic sludge mainl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/147C02F11/12
CPCC02F11/12C02F11/14
Inventor 毛维东郭中权郑彭生
Owner CHINA COAL TECH & ENG GRP HANGZHOU ENVIRONMENTAL PROTECTION INST
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