Treatment method for removing heavy metals in sludge by traditional Chinese medicines

Abstract

The invention discloses a treatment method for removing heavy metals in sludge by traditional Chinese medicines. The method comprises the steps: conveying stacked sludge and the traditional Chinese medicines to a primary vibration stirring crusher, mixing, vibrating and stirring; adding three auxiliary materials into the mixture after primary stirring, and conveying the mixture and the three auxiliary materials to a secondary vibration stirring crusher, mixing, vibrating and stirring; conveying the mixture subjected to secondary stirring to a primary fermentation field; carrying out primary turning and throwing by using a turning and throwing machine during fermentation; and adding high-temperature zymophyte into the mixture obtained after primary fermentation, conveying the mixture to a ternary vibration stirring pulverizer, mixing, vibrating and stirring, conveying the mixture obtained after ternary stirring to a secondary fermentation site, and turning and throwing for three times through the turning and throwing machine during fermentation, wherein the mixture obtained after secondary fermentation is a finished organic fertilizer.

Description

technical field

[0001] The invention discloses a treatment method for removing heavy metals in sludge by traditional Chinese medicine, belongs to the technical field of environmental protection, and relates to a treatment method for resource utilization of solid waste. Background technique

[0002] With the development of industry, more and more sludge contains heavy metals, mainly in one or more forms of cadmium, mercury, chromium, copper, lead, zinc, nickel, cobalt, iron, etc. in the sludge.

[0003] At present, the methods for removing heavy metals in sludge include: passivation method, which is to put quicklime, fly ash, and clay in the sludge to increase the pH to convert heavy metals into hydroxides and other precipitation. To passivate heavy metals to kill pathogenic bacteria. However, heavy metals were not removed from the sludge.

[0004] Electric restoration method, electric restoration technology, as a new type of green restoration technology, has high removal e...

Examples

Embodiment 1

[0030] First, put the dry powdered traditional Chinese medicine Fangfeng and the heavy metal sludge containing 80% water into a machine with vibration, stirring and crushing, and mix and vibrate for 10 minutes. The ratio of sludge to Chinese medicine Fangfeng is 2 kg of Chinese medicine Fangfeng per ton of sludge. This link has three functions, one is to stir and mix evenly; the other is to break the wall of the sludge flocculant; the third is that saponins need certain oscillation while removing heavy metals.

[0031] The sludge that has been stirred for 10 minutes is transported to the second vibrating mixer through the conveyor for vibration and stirring again, and three auxiliary materials are added at the same time, 0.3 tons of corn bran per ton of sludge, and 0.2 tons of furfural slag per ton of sludge , with 0.1 tons of biological carbon per ton of sludge, and put them into the second vibrating mixer for 10 minutes of mixing and vibration stirring, and at the same time ...

technical field

[0001] The invention discloses a treatment method for removing heavy metals in sludge by traditional Chinese medicine, belongs to the technical field of environmental protection, and relates to a treatment method for resource utilization of solid waste. Background technique

[0002] With the development of industry, more and more sludge contains heavy metals, mainly in one or more forms of cadmium, mercury, chromium, copper, lead, zinc, nickel, cobalt, iron, etc. in the sludge.

[0003] At present, the methods for removing heavy metals in sludge include: passivation method, which is to put quicklime, fly ash, and clay in the sludge to increase the pH to convert heavy metals into hydroxides and other precipitation. To passivate heavy metals to kill pathogenic bacteria. However, heavy metals were not removed from the sludge.

[0004] Electric restoration method, electric restoration technology, as a new type of green restoration technology, has high removal e...

Examples

Embodiment 1

[0030] First, put the dry powdered traditional Chinese medicine Fangfeng and the heavy metal sludge containing 80% water into a machine with vibration, stirring and crushing, and mix and vibrate for 10 minutes. The ratio of sludge to Chinese medicine Fangfeng is 2 kg of Chinese medicine Fangfeng per ton of sludge. This link has three functions, one is to stir and mix evenly; the other is to break the wall of the sludge flocculant; the third is that saponins need certain oscillation while removing heavy metals.

[0031] The sludge that has been stirred for 10 minutes is transported to the second vibrating mixer through the conveyor for vibration and stirring again, and three auxiliary materials are added at the same time, 0.3 tons of corn bran per ton of sludge, and 0.2 tons of furfural slag per ton of sludge , with 0.1 tons of biological carbon per ton of sludge, and put them into the second vibrating mixer for 10 minutes of mixing and vibration stirring, and at the same time ...