Biological complex enzyme for sludge recycling and use method thereof

A bio-enzyme and resource-based technology, applied in the fields of botanical equipment and methods, biological sludge treatment, and application, can solve the problems of poor degradability, multiple labor, and high site and facility requirements.

Inactive Publication Date: 2012-04-11
GUANGZHOU ZHUSHUI ENVIRONMENT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] In general composting is a stable and hygienic product, but large-scale sludge composting has many limitations:
[0018] (1) Sludge itself is not a very good compost material, with poor degradability, low porosity, and high moisture content. A large amount of conditioner must be added to loosen the sludge, and the amount of composted sludge is relatively low (after composting treatment Most of them are heavy conditioners), not suitable for rainy southern regions
[0019] (2) The composting process does not achieve volume reduction, and the processing, storage, and buffer areas occupy a large area
[0020] (3) The odor treatment process is complicated and the system is huge
For the rainy climate in the south, the requirements for storage and composting sites and facilities are high, which also increases investment
[0021...

Method used

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  • Biological complex enzyme for sludge recycling and use method thereof
  • Biological complex enzyme for sludge recycling and use method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Get 10 kg of sludge with a solid content of 2.5% from the thickening tank and put it into a 5-gallon plastic bucket. Then take 10 ml of compound enzyme and dilute it with pure water at a ratio of 1:100, and then add it into the plastic bucket filled with sludge. After mixing the sludge and compound enzyme, stir with a stirrer at 250 rpm for 10 minutes, then add 50 ml of 30% hydrogen peroxide (peroxide), and continue to stir for 4 hours.

[0063] To simulate dehydration, add 1 gram of chitosan bioflocculant in a plastic bucket and stir evenly until flowers bloom. After the sludge settles, first pour out the supernatant in the bucket, and then pour the flocculated and precipitated sludge on the filter paper to continue dehydration for 30 minutes.

[0064] The sludge dehydrated through the above process is weighed, and the humus soil is mixed with the dewatered sludge according to the proportion of 40% of the weight of the dewatered sludge. After uniform stirring, it is s...

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PUM

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Abstract

The invention discloses a biological complex enzyme for sludge recycling and a use method thereof. The biological complex enzyme for sludge recycling is broad spectrum complex enzyme extracted from dozens of North American native natural plants. The sludge treated with the biological complex enzyme is dehydrated, mixed with humus earth for pelletizing and desiccated to obtain complex soil, and the soil not only can cure heavy metal and organic pollutants but also can be used as basis material of various facilities such as roof, rainwater garden, ecological water drainage system and the like, so that the sludge treatment problem of the sewage treatment plant is effectively solved.

Description

technical field [0001] The invention relates to the field of environmental engineering, in particular to a biological compound enzyme for recycling sludge and a use method thereof. Background technique [0002] The sludge produced by urban sewage treatment plants has a high water content (75-99%), and is unstable, easily corrupted, and has a foul smell. Sludge contains organic matter, nitrogen, phosphorus, potassium and various trace elements, pathogenic substances such as parasite eggs and pathogenic microorganisms, heavy metals such as copper, zinc and chromium, and refractory and toxic substances such as polychlorinated biphenyls and dioxins. Hazardous substances, if not handled properly, can easily cause secondary pollution. [0003] A large amount of sludge produced by urban sewage treatment plants requires a large amount of infrastructure investment and high operating costs through conventional sludge treatment and disposal processes such as sedimentation, separation,...

Claims

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Application Information

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IPC IPC(8): C02F11/02A01G1/00
Inventor 佘年
Owner GUANGZHOU ZHUSHUI ENVIRONMENT TECH
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