Municipal domestic sludge air flotation concentrating treatment device and method thereof

A technology for domestic sludge and treatment equipment, applied in dewatering/drying/concentrating sludge treatment, etc., can solve the problems of lack of systematic research on process parameters and equipment, easy generation of odor and phosphorus release reaction, and less application of air flotation concentration technology. , to achieve the effect of extensive technological advancement, small footprint and low engineering cost

Active Publication Date: 2018-06-19
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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  • Municipal domestic sludge air flotation concentrating treatment device and method thereof
  • Municipal domestic sludge air flotation concentrating treatment device and method thereof
  • Municipal domestic sludge air flotation concentrating treatment device and method thereof

Examples

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Effect test

Embodiment 1

[0037] A municipal domestic sludge air flotation concentration treatment equipment such as figure 2 As shown, the equipment includes a sludge conditioning unit for quantitative dosing, mixing, and reaction, and a vortex-concave air flotation concentration unit for dissolving air in sludge and completing separation. In this embodiment, the sludge conditioning unit is conditioning pool 1, and conditioning pool 1 communicates with the bottom of vortex concave air flotation concentration pool 3 through central feed pipe 2, and vortex concave air flotation concentration pool 3 has a double cone bottom, and 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 a rotating The air bearing head 6 connected to the shaft 7 is located at the inner bottom of the central reaction cylinder 4 and at the ...

Embodiment 2

[0047] A municipal domestic sludge air flotation concentration treatment equipment, the specific scheme is the same as that of embodiment 1, the difference is that Figure 5 A kind of air bearing head that is used for vortex dissolved air is shown, the top of the air bearing head is connected to the hollow rotating shaft 7, and the air bearing head includes six surfaces that are provided with a plurality of micropores 62 and hollow dissolving branch pipes 63, and use It is connected to the rotating shaft and the gas-dissolving branch pipe and is a hollow central disk 64. The gas-dissolving branch pipe is a curved pipe with a hollow structure, and the microholes are set on the side of the gas-dissolving branch pipe away from the direction of rotation, and the diameter of the microholes is 5mm. The central disk is a cylinder with an opening 65 on the top that can be connected with the rotating shaft and a cavity inside. The outer wall of the central disk is evenly distributed 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 an air flotation concentration treatment equipment and method for municipal domestic sludge, and belongs to the technical field of waste water and waste gas treatment. Background technique [0002] With the acceleration of urbanization in our country, the domestic sewage treatment rate has gradually increased. The sludge produced in the domestic sewage treatment process has the characteristics of high water content, large volume, high organic matter content, poor stability, and odor, and the amount is also increasing. At the same time, due to the high cost of sludge treatment and the threat of toxic substances and pathogens in 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 municipal domestic sludge main...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/14C02F11/12
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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