River sludge treatment method

A treatment method and river sludge technology, applied in sludge treatment, biological sludge treatment, water/sludge/sewage treatment, etc., can solve the problems of secondary utilization of unfavorable resources, incomplete removal of harmful heavy metals and microorganisms in sludge, etc. Achieve the effects of avoiding secondary pollution, good promotion value, and simplifying sludge treatment methods

Pending Publication Date: 2021-08-17
HUAJIANG CONSTR OF CHINA CONSTR FIRST BUILDING GROUP CORP +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a treatment method and construction method of river silt, to solve the traditional method that can not completely remove harmful heavy metals and microorganisms in the silt and Technical issues that are not conducive to the subsequent secondary utilization of resources

Method used

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Embodiment Construction

[0024] The treatment method of this kind of river channel sludge, firstly, after the sludge or sludge collected by river channel dredging is put into the workshop, a heavy metal curing agent is added to chelate and solidify the heavy metals in the sludge. After adding the heavy metal curing agent, the heavy metal content in the sludge is uniform within standard limits.

[0025] Then according to the weight of the chelated sludge or silt, add pig manure and edible fungus bag waste in proportion for stirring. During the stirring process, a small amount of leachate will be generated, and a small amount of edible fungus bag waste will be added for absorption to achieve zero discharge of leachate .

[0026] Next, according to the total weight of the sludge, add 1 to 1.5 kg of high-efficiency biological bacteria per ton of sludge for stirring. After stirring evenly, use a forklift to shovel it into a static fermentation tank for fermentation.

[0027] During the static fermentation...

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Abstract

The invention relates to a river sludge treatment method, which comprises: 1, carrying out solid waste leaching toxicity identification detection on sludge; step 2, chelating and curing heavy metals in the sludge; 3, according to the weight of the chelated sludge, adding pig manure and edible fungus bag waste in proportion and stirring, and when percolate is generated, adding edible fungus bag waste; 4, adding efficient biological bacteria for stirring; step 5, after uniformly stirring, shoveling the sludge mixture into a static fermentation tank by using a forklift, and fermenting; step 6, performing static fermentation on the sludge mixture in the fermentation tank for 10-15 days; and step 7, taking out the sludge mixture from the fermentation tank, spreading the fermented sludge, carrying out rotary tillage, airing to evaporate water, and then carrying out turning and dewatering to obtain the treated sludge. The technical problems that harmful heavy metals and microorganisms in the sludge cannot be completely removed and subsequent secondary utilization of resources is not facilitated in a traditional method are solved.

Description

technical field [0001] The invention belongs to the technical field of sludge treatment, and in particular relates to a novel sludge treatment method. Background technique [0002] my country's urban rivers are facing many problems such as pollution and ecological function degradation, which have a greater adverse impact on the physical and mental health of surrounding residents and coastal land, and are not conducive to the future development of cities and towns. River silt contains a large amount of harmful and refractory organic matter, heavy metals, pathogenic microorganisms, and parasite eggs. These silts not only affect the appearance of the city, but also cause more serious secondary pollution to the environment after long-term deposition. [0003] The traditional dredging disposal method is to dehydrate, solidify and incinerate the dredged sludge. However, this method cannot completely remove harmful heavy metals and microorganisms in the sludge, and is not conduciv...

Claims

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Application Information

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IPC IPC(8): C02F11/00C02F11/02C02F11/121C05F15/00C05F17/00C02F101/20
CPCC02F11/004C02F11/008C02F11/02C02F11/121C05F3/00C05F17/20C02F2101/20C02F2103/007C02F2303/04C05F5/00C05F7/00C05F11/08Y02W30/40
Inventor 黄超林文鑫李艺芳张佳波赖志成尤旺龙曹瑞良徐林筝唐杰王明远
Owner HUAJIANG CONSTR OF CHINA CONSTR FIRST BUILDING GROUP CORP
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