Sludge treatment process

A sludge treatment and sludge technology, applied in biological sludge treatment, water/sludge/sewage treatment, dehydration/drying/concentrated sludge treatment, etc. The root system is developed, the leaves are thick, and the effect of improving soil activity

Inactive Publication Date: 2015-04-01
TIANCHANG FEILONG BRAND STEEL GRID
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large amount of sludge has not been treated in a timely and reasonable manner and has become a heavy burden for sewage treatment plants

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A kind of sludge treatment process that the embodiment of the present invention proposes, comprises:

[0018] First build a circulating sludge flow channel, and lay a biological bed composed of algae and spores on the flow channel, dilute the sludge to be treated with water into a flowable state, and then introduce it into the sludge flow channel, allowing the sludge to flow The channel circulates for 2 hours, using the algae and spores on the biological bed to absorb heavy metals in the sludge and reduce the content of heavy metals in the sludge; then, add DM to the sludge at a rate of 300 grams per ton of sludge Activator, and stir the sludge during the addition process to ensure that the DM activator is evenly mixed with the sludge. After the DM activator is added, the sludge is dehydrated so that the water content of the sludge is in the range of 50%-55%. ;Concentrate the dehydrated sludge into the fermentation tank for 7 days of fermentation, and start heating when...

Embodiment 2

[0020] A kind of sludge treatment process that the embodiment of the present invention proposes, comprises:

[0021] First build a circulating sludge flow channel, and lay a biological bed composed of algae and spores on the flow channel, dilute the sludge to be treated with water into a flowable state, and then introduce it into the sludge flow channel, allowing the sludge to flow The channel circulates for 4 hours, using the algae and spores on the biological bed to absorb heavy metals in the sludge and reduce the content of heavy metals in the sludge; then, add DM to the sludge at a rate of 375 grams per ton of sludge Activator, and stir the sludge during the addition process to ensure that the DM activator and the sludge are evenly mixed. After the DM activator is added, the sludge is dehydrated so that the water content of the sludge is in the range of 55%-65%. ;Secondly, concentrate the dehydrated sludge into the fermentation tank for fermentation for 7 days, and start h...

Embodiment 3

[0023] A kind of sludge treatment process that the embodiment of the present invention proposes, comprises:

[0024] First build a circulating sludge flow channel, and lay a biological bed composed of algae and spores on the flow channel, dilute the sludge to be treated with water into a flowable state, and then introduce it into the sludge flow channel, allowing the sludge to flow The channel circulates for 5 hours, and the algae and spores on the biological bed are used to absorb heavy metals in the sludge to reduce the content of heavy metals in the sludge; then, add DM to the sludge at a rate of 450 grams per ton of sludge Activator, and stir the sludge during the addition process to ensure that the DM activator is evenly mixed with the sludge. After the DM activator is added, the sludge is dehydrated so that the water content of the sludge is in the range of 65%-70%. ;Secondly, concentrate the dehydrated sludge into the fermentation tank for 8 days of fermentation, and st...

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PUM

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Abstract

The invention discloses a sludge treatment process which comprises the following steps: separating refractory heavy metals in sludge by virtue of adsorption of microorganisms in advance; then, sterilizing to kill eggs for organic wastes in the sludge under continuous high-temperature fermentation by microbial fermentation and curing, wherein nutrients in the sludge can be retained to the maximum extent and harmful substances are decomposed, removed and passivated to the maximum extent; and finally, dehydrating and drying. The sludge treated by the process disclosed by the invention is turned from waste to nutritional soil, and the sludge not only is high in content of organic matters, but also contains a lot of beneficial bacteria and part of physiological activators; the sludge can be applied to soil, so that the content of the organic matters can be increased, the activity of soil is improved, the physical and chemical properties of soil are improved, and soil hardening is alleviated; the sludge further can be used for promoting crops to grow and develop and accelerating precocity of the crops, so that the crops are developed in root system and thick in stem and leaf. The anti-drought, anti-flooding, anti-cold, anti-dodging and disease and insect pest-resisting performances of the crops are improved, and the yield-increasing and income-increasing effects are obvious.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a sludge treatment process. Background technique [0002] With the development of domestic sewage treatment business, the total treatment water volume and treatment degree of sewage treatment plants continue to expand and improve, and the amount of sludge produced will also increase day by day. A large amount of sludge has not been treated in a timely and reasonable manner, which has become a heavy burden for sewage treatment plants. The problem of sludge treatment and disposal has become more and more prominent and has become a serious social problem. Contents of the invention [0003] Based on the problems raised in the above-mentioned background technology, the present invention proposes a sludge treatment process, which uses biosorption, microbial fermentation, and drying technologies to maximize the retention of nutrients in the sludge and the maximum decompositi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/02C02F11/04C02F11/12C05F7/00
CPCC02F11/02C02F11/12C02F2303/06C05F7/00Y02A40/20
Inventor 孙长志
Owner TIANCHANG FEILONG BRAND STEEL GRID
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