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Sludge soil restoration agent, preparation method, and application of sludge soil restoration agent in sludge digestion

A soil remediation agent and sludge technology are applied in the sludge soil remediation agent and a kind of sludge disposal. The application of the sludge soil remediation agent in the sludge disposal can reduce the use of chemical fertilizers and eliminate pollution sources. and secondary pollution, good effect

Inactive Publication Date: 2017-07-07
北京绿安创华环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The sludge soil remediation agent provided by the present invention is in order to overcome the difficulty of existing sludge consumption. The sludge soil remediation agent of the present invention not only solves the problem of sludge disposal, but also turns waste into treasure, turning sludge into soil remediation agent , can restore saline-alkali land, remove heavy metals from polluted land without any side effects and the risk of secondary pollution

Method used

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  • Sludge soil restoration agent, preparation method, and application of sludge soil restoration agent in sludge digestion
  • Sludge soil restoration agent, preparation method, and application of sludge soil restoration agent in sludge digestion
  • Sludge soil restoration agent, preparation method, and application of sludge soil restoration agent in sludge digestion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Embodiment 1 A kind of preparation method of sludge soil remediation agent

[0044] 1. Pretreatment of sludge raw materials

[0045] Sampling and analysis of dewatered sludge from a sewage plant (domestic sewage) in Beijing. The basic properties of the sludge are: moisture content 78.9%, total organic matter 540g / kgDM, water-soluble total nitrogen 3.1g / kgDM, coliform bacteria Value > 23,000 MPN / kgDM. The above-mentioned dehydrated domestic sludge is stacked and dried in the drying yard for 10 to 15 days, and a chemical deodorant can be added appropriately. Initially reduce the odor, and reduce the water content to below 40%, which is beneficial to the subsequent operation. Add to the lumpy sludge after drying according to every 100kg of lumpy sludge: 10-15kg of crushed straw, 10-20kg of biogas fertilizer, 10-20kg of humus, 15-30kg of compound fertilizer, and 3-8kg of amino acid. The compound fertilizer includes potassium fertilizer, nitrogen fertilizer and phosphorus...

Embodiment 2

[0061] Embodiment 2 A kind of preparation method of sludge soil remediation agent

[0062] 1. Pretreatment of sludge raw materials

[0063] Operate according to the method of embodiment 1.

[0064] 2. Cultivation of thermophilic bacteria

[0065] Operate according to the method of Example 1, but use two kinds of thermophilic bacteria, which are respectively: a mixture of the first thermophilic bacteria and the second thermophilic bacteria, and the mixing ratio of the two is 1:1, wherein the first thermophilic bacteria selected from Bacillus stearothermophilus and the second thermophilic bacterium selected from Lactobacillus delbrueckii.

[0066] 3. The first round of fermentation of thermophilic bacteria

[0067] Operate according to the method of embodiment 1.

[0068] 4. Incorporate the same bacterial group into the decomposed sludge to obtain soil remediation agent

[0069] Operate according to the method of Example 1, but the microbial bacterial agent is Lactobacillus...

Embodiment 3

[0071] Embodiment 3 A kind of preparation method of sludge soil remediation agent

[0072] 1. Pretreatment of sludge raw materials

[0073] Operate according to the method of embodiment 1.

[0074] 2. Cultivation of thermophilic bacteria

[0075] Operate according to the method of Example 1, but use a mixture of thermophilic bacteria, which are respectively: a mixture of the first thermophilic bacteria and the second thermophilic bacteria, and the mixing ratio of the two is 1:1, wherein the first thermophilic bacteria Selected from Bacillus stearothermophilus, Sporotrichum thermophile (Sporotrichum thermophile), Aspergillus fumigatus (Aspergillus fumigatus), Geobacillus thermophilus (Geobacillus thermophilus), Bacillus thermophilic liquefaction, the second thermophilic bacteria are selected from Germany Lactobacillus pumilus, Thermomonospora fusca (Thermomonospora fusca), Thermoactinomyces vulgaris (, Bacillus pumilus), Lactobacillus delbrueckii (Lactobacillus delbrueckii), ...

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Abstract

The invention provides a sludge soil restoration agent, a preparation method, and application of the sludge soil restoration agent in sludge digestion. The invention adopts the technical scheme that municipal sewage sludge is treated at an early stage, an organic matter is decomposed by thermophilic bacteria, and homonymous bacteria colonies are inoculated. Through an experiment, after the sludge soil restoration agent is used for 20 days, the proportional effective removal rate of various pollutants of soil achieves 95 percent or above so as to meet the national standard. Meanwhile, a sulfuric acid matter can acidize a hardened salt and alkali land, is good organic fertilizer, is beneficial for reducing the use of a chemical reagent and chemical fertilizer in agricultural production, and completely eradicates a pollution source and secondary pollution from the source.

Description

technical field [0001] The present invention relates to a sludge soil remediation agent and a method for absorbing sludge, in particular to a method for preparing a soil remediation agent by treating sludge with microorganisms, the obtained sludge soil remediation agent, and the sludge remediation agent thereof. Application of soil remediation agent in sludge digestion. Background technique [0002] With the acceleration of urbanization in my country, the amount of urban sewage treatment is also increasing. Sludge is an accompanying organism of sewage treatment, usually accounting for 0.5--1% of the sewage treatment volume. Due to its complex composition, it contains not only a large amount of organic matter, but also contains pathogenic microorganisms, heavy metals, etc. Form "secondary pollution". Therefore, how to safely, economically and rationally dispose and utilize sludge from sewage treatment plants has always been a research topic of great concern to countries all...

Claims

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Application Information

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IPC IPC(8): C05G3/04C05F17/00C05G3/80
CPCC05C11/00C05F17/50C05G3/80C05F7/00C05F9/04C05F11/00C05F11/02C05F11/08C05G1/00Y02E50/30Y02W30/40
Inventor 王锋梁琳琳谢英轩
Owner 北京绿安创华环保科技有限公司
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