Sludge utilization method and application

A silt and silt technology, applied in the silt utilization method and application field, can solve the problems of not very prominent environmental benefit, economic benefit, social benefit, single method, cumbersome silt soil utilization and treatment process, etc., achieving significant economic benefits and protection. Planting environment, the effect of facilitating large-scale promotion and application

Pending Publication Date: 2018-11-20
MEILIGUOTU BEIJING ECOLOGICAL ENVIRONMENT ENG TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, at present, the land use and treatment process of silt is cumbersome, and the method is relatively single, and the environmental, economic and social benefits are not very prominent

Method used

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  • Sludge utilization method and application
  • Sludge utilization method and application
  • Sludge utilization method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0167] The bacterial agents used in Example 1 and Example 2 include Lactobacillus, Lactobacillus helveticus, Lactococcus lactis, Streptococcus thermophilus, Bacillus subtilis, Bacillus licheniformis and Candida utilis. The number of live bacteria is 2.5 billion / mL, and the ratio of live bacteria of Lactobacillus, Lactobacillus helveticus, Lactococcus lactis, Streptococcus thermophilus, Bacillus subtilis, Bacillus licheniformis and Candida utilis is 1:1: 2:2:0.5:3:0.5.

[0168] Example 1

[0169] A method for utilizing sludge, comprising the steps of:

[0170] 1. Sludge detection: Take 0-20cm of mixed silt at a distance of 200 meters from the center of a certain river, and send the silt to Testing Technology Service Co., Ltd. for testing. The silt testing results are shown in Table 2.

[0171] Table 2 Sludge test results

[0172]

[0173] Compare the results of the sludge test with the soil nutrient grading standards in "Green Planting Soil" (CJ / T 340-2016) and "Urban Sew...

Embodiment 2

[0188] A method for utilizing sludge, comprising the steps of:

[0189] 1. Sludge detection: with embodiment 1.

[0190] 2. Harmless treatment:

[0191] (1) Leveling of the land

[0192] Excavators or bulldozers are used to level the scattered and piled silt. The average thickness of the silt is 10cm, the moisture content of the sludge is 28%, and the moisture content of the soil is 19%.

[0193] (2) Spraying microbial agents

[0194] Add the silt fermented bacterial agent into an appropriate amount of water, and mix well, then spray the diluted bacterial agent evenly on the silt, plow it as soon as possible, and the dosage of the bacterial agent is 15 kg / mu.

[0195] (3) Plowing of the land

[0196] Use a rotary tiller with a depth of 35cm to plow the silt laid in the green belt; control the moisture content of the second rotary tillage mixed sludge at about 40%, and control the moisture content of the third rotary tillage below 20%. During the interval between two rotar...

Embodiment 3

[0204] A method for utilizing sludge, comprising the steps of:

[0205] 1. Sludge detection: with embodiment 1.

[0206] 2. Harmless treatment:

[0207] (1) Leveling of the land

[0208] Excavators or bulldozers are used to level the scattered and piled silt. The average thickness of the silt is 15cm, the moisture content of the sludge is 35%, and the moisture content of the soil is 15%.

[0209] (2) Spraying microbial agents

[0210] Add the silt fermented bacterial agent into an appropriate amount of water, and mix well, then evenly spray the diluted bacterial agent on the silt, plow it as soon as possible, and the dosage of the bacterial agent is 12 kg / mu.

[0211] (3) Plowing of the land

[0212]Use a rotary tiller with a depth of 40cm to plow the silt laid in the green belt; control the moisture content of the mixed sludge at about 35% in the second rotary tillage, and control the moisture content of the third rotary tillage below 15%. During the interval between two...

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Abstract

The invention discloses a sludge utilization method and application, and relates to the technical field of comprehensive utilization of natural water sludge. The sludge utilization method comprises the following steps: performing harmless treatment on sludge which meets the pollutant index requirements in GB / T 23486-2009 'Sludge Characters for Landscaping in Municipal Sewage Treatment Plant SludgeDisposal' and then using the sludge as greening soil, wherein the harmless treatment comprises plowing and curing the sludge stacked on green belt soil and added with a sludge fermentation microbialinoculum, and using the cured soil for planting landscaping plants. By using the method provided by the invention, the defects of complicated land use treatment process, single mode, and unremarkableenvironmental, economic and social benefits of the existing sludge are relieved; and according to the method provided by the invention, the sludge meeting indexes is used as soil for green belts, effective components in the sludge can be fully utilized, shore soil can be improved, the usage amount of chemical fertilizers and humus soil in garden planting can be reduced, the planting environment can be protected, non-point source pollution can be reduced, and sludge resource utilization can be realized.

Description

technical field [0001] The invention relates to the technical field of comprehensive utilization of natural water body silt, in particular to a method and application of silt utilization. Background technique [0002] Silt is long-term accumulated sediment at the bottom of water bodies such as rivers, lakes, reservoirs, and bays. It is an important part of the multi-phase ecosystem of water bodies and a place where environmental pollutants gather in a wide space and for a long time. Silt refers to the mixture of clay, silt, organic matter and various minerals, which is formed by depositing at the bottom of the water body after long-term physical, chemical and biological actions and water body transportation. The main pollutants in river silt can be divided into: (1) nutrients, including nutrients such as N and P that enter the water body through various channels; (2) heavy metals; (3) refractory organic substances, including polychlorinated biphenyls ( PCBs) and organochlor...

Claims

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Application Information

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IPC IPC(8): A01B79/00A01G24/20C02F11/02C02F11/00
CPCA01B79/00A01G24/20C02F11/00C02F11/02
Inventor 李艳马宏楠申献江李云飞王鹤立
Owner MEILIGUOTU BEIJING ECOLOGICAL ENVIRONMENT ENG TECH RES INST CO LTD
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