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Treatment method of refined cotton sludge

A technology for refining cotton and sludge, applied in the directions of microorganism-based methods, microbial treatment, combined biological treatment, etc., can solve the resource utilization of unseen refined cotton sludge, increase the difficulty of refined cotton sludge treatment, and refine cotton sludge. The problem of high water content of mud has achieved the effect of widely popularized and utilized value, low cost and short production cycle.

Active Publication Date: 2021-07-16
INST OF SUBTROPICAL AGRI CHINESE ACAD OF SCI +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Compared with other sludges, refined cotton sludge has high water content (over 70% after dehydration) and low density (0.45g / cm 3 ), the extrusion dehydration process causes compaction, and it takes up a lot of space for accumulation or burial treatment, so it increases the difficulty of the treatment of refined cotton sludge
In the past, refined cotton sludge was generally processed by simple sludge drying plants, plate and frame filter presses, etc., and then sent to landfills, which not only cost a lot of manpower and material resources, but also caused potential pollution risks to soil and groundwater
And there is no research report on the resource utilization of refined cotton sludge

Method used

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preparation example Construction

[0020] In the present invention, the preparation method of the Bacillus subtilis bacteria liquid and the Bacillus licheniformis bacteria liquid comprises: respectively inoculating the Bacillus subtilis and the Bacillus licheniformis in LB liquid medium, and vibrating culture to obtain corresponding bacterial liquids. In the present invention, the formula of the LB liquid culture medium is preferably 10 g of tryptone, 5 g of yeast extract, 10 g of NaCl, 1000 mL of distilled water, and pH 7.0. In the present invention, as an embodiment, the temperature of the shaking culture is preferably 35-40° C., more preferably 37° C., and the time is preferably 40-50 h, more preferably 48 h.

[0021] In the present invention, the preparation method of the Saccharomyces cerevisiae liquid preferably comprises: inoculating Saccharomyces cerevisiae on PD medium, and vibrating culture to obtain the Saccharomyces cerevisiae liquid. In the present invention, as an embodiment, the preparation metho...

Embodiment 1

[0040] Preparation of compound bacterial agent

[0041] (1) Preparation of Bacillus subtilis bacterium liquid and Bacillus licheniformis bacterium liquid

[0042] Bacillus subtilis and Bacillus licheniformis were respectively inoculated in LB liquid medium, and cultured with shaking at 37°C for 48 hours to obtain corresponding bacterial solutions. The formula of LB liquid medium is 10g of tryptone, 5g of yeast extract, 10g of NaCl, 1000mL of distilled water, pH7.0.

[0043] (2) Preparation of Saccharomyces cerevisiae liquid

[0044] Saccharomyces cerevisiae was inoculated in PD medium, and cultured with shaking at 30° C. for 48 hours to obtain the Saccharomyces cerevisiae bacterial liquid. The preparation method of the PD medium is as follows: peel and cut 200g of potatoes into small pieces, mix with 20g of glucose and 1000mL of distilled water, boil for 20 minutes, then filter with gauze, and the obtained filtrate is the PD medium.

[0045] (3) Preparation of Trichoderma v...

Embodiment 2

[0050] Take respectively 1000kg of refined cotton sludge, 160kg of green foxtail algae, 600kg of cow dung, 240kg of rice straw, and 2kg of the composite bacterial agent obtained in Example 1, and mix uniformly to obtain a mixture with a moisture content of 60% and a carbon-to-nitrogen ratio of 28:1. For composting, place a temperature monitoring sensor in the heap for primary fermentation, turn over every 4 days, perform secondary fermentation after 12 days of fermentation, turn over every 7 days, and obtain organic fertilizer after 18 days of fermentation.

[0051] After the first fermentation, the organic matter content was 56.2%, and the water content was 39.54%. After the second fermentation, the organic matter content of the heap was 79.0%, and the water content was 25.07%.

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Abstract

The invention provides a treatment method of refined cotton sludge and belongs to the technical field of harmless treatment and cyclic utilization of wastes, especially solid wastes. The treatment method of refined cotton sludge comprises the following steps: uniformly mixing a complex microorganism inoculant with a mixed material consisting of refined cotton sludge, myriophyllum elatinoides, cow dung and straw to obtain a compost heap, and sequentially carrying out primary fermentation and secondary fermentation. The complex microorganism inoculant comprises bacillus subtilis liquid, bacillus licheniformis liquid, saccharomyces cerevisiae liquid and a trichoderma viride spore suspension. The complex microorganism inoculant can enable the heap to be rapidly heated and thoroughly decomposed, and have a short production period, and an obtained organic fertilizer can be used for improving quality and yield of fruits and vegetables. Experimental results show that compared with treatment 1 and treatment 2, by applying the provided organic fertilizer, the average plant height can be respectively increased by 2.3 cm and 1.5 cm, the average yield per mu is respectively increased by 333.5 kg and 166.75 kg, and yield increasing rates are respectively 18.52% and 8.47%.

Description

technical field [0001] The invention belongs to the technical field of harmless treatment and recycling of waste solid waste, and in particular relates to a treatment method for refined cotton sludge. Background technique [0002] Refined cotton enterprises will produce a large amount of sludge in the production process. Against the background of the global spread of the new crown epidemic in 2020, my country's mask production capacity has shown a blowout growth, and the supply has reached more than 50% of the world. As an indispensable raw material for the production of medical masks and protective clothing, the output of refined cotton has also greatly increased, and a large amount of sludge will also be added. How to deal with this sludge is a major problem faced by refined cotton enterprises. [0003] Compared with other sludges, refined cotton sludge has high water content (over 70% after dehydration) and low density (0.45g / cm 3 ), the extrusion dehydration process cau...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12N1/20C12N1/16C12N1/14C05F15/00C05F17/20C05F17/50C12R1/125C12R1/10C12R1/885C12R1/865
CPCC12N1/20C12N1/16C12N1/14C05F3/00C05F17/20C05F17/50C05F7/00C05F11/00C05F11/08Y02W30/40
Inventor 高文瑞刘锋孙艳军鲍爱明胡廉成刘新亮
Owner INST OF SUBTROPICAL AGRI CHINESE ACAD OF SCI
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