A bionic gravity type high-efficiency and environment-friendly sludge dryer and its realization method

Abstract

The invention discloses a bionic gravity type high-efficiency and environment-friendly sludge dryer and a realization method thereof, comprising a casing, a mud inlet arranged on the top of the casing, and a plurality of filter bags arranged inside the casing for holding sludge, The mud outlet is connected with the multiple filter bags at the lower part, and the upper part of the multiple filter bags is provided with a water collection tank, and the bottom of the multiple filter bags is provided with a mud discharge port, which is funnel-shaped. First, the sludge with very high moisture content enters the filter bag, and the water is filtered out through the filter bag by gravity, and a small amount of water in the lower part of the filter bag continuously infiltrates the surface of the filter bag; then, the water on the surface of the filter bag is absorbed by various The residual heat or natural wind is used to dry the sludge, and finally the sludge that has reached the drying effect is discharged through the sludge discharge port at the bottom of the equipment under the action of gravity. The invention has wide application range, stable treatment effect, small equipment footprint, simple structure, low cost, easy operation, flexible and changeable module operation mode, high treatment efficiency, no need to consume additional energy, reduced carbon emissions, and saved costs.

Description

technical field [0001] The invention relates to the technical field of pollutant treatment equipment, in particular to a bionic gravity type high-efficiency and environment-friendly sludge dryer and a realization method thereof. Background technique [0002] With the improvement of society's environmental requirements and the popularization of sewage treatment projects, sludge, as a secondary organism that will inevitably be produced in the process of sewage treatment, is increasingly produced, and the problem of safe and hygienic disposal has become increasingly prominent. [0003] At present, the sludge drying process mainly includes several methods such as natural drying, thermal drying, and high-dry dehydration. [0004] 1. Natural drying means that the sludge is paved and dried in a drying field with a natural filter layer or an artificial filter layer. With the help of natural forces and media (such as solar energy, wind energy and air), the moisture in the sludge is r...

AI Technical Summary

Problems solved by technology

[0008] 1. The sludge drying bed has problems such as low efficiency, large floor area, poor working environment and sanitation conditions, high labor intensity for shoveling dry sludge, inability to continuously process sludge, and impact on the surrounding environment during use. series of questions

[0009] 2. The sludge dryer needs to continuously heat the sludge drying heat medium during use. This process consumes a large amount of heat source and the operating cost is high. Since the sludge dryer dries the sludge through heat conduction of the heat medium Chemical treatment, so there are certain requirements for the airtightness of the equipment, and the one-time input price is relatively high

[0010] 3. The plate and frame filter press takes a long time to press, and the cycle time is about 3-4 hours; it cannot discharge continuously, and the processing capacity of a single device is not large, and the quantity is large; the filter cloth of the plate and frame filter press is made of PP or Made of polyamide, the service life is not long, and it needs to be cleaned frequently; the automatic cake unloading device of the plate and frame filter press needs to be improved, and currently needs to be unloaded manually, and the labor intensity of the workers is high; a certain amount of flocculant (wood chips or quicklime) needs to be added ), increasing the running cost

[0011] 4. Belt filter press has poor site environment, strong odor, high humidity, easy to cause secondary pollution, and high one-time investment

Moreover, the treatment effect is not ideal, the energy consumption is large in the process of sludge treatment, and the operation cost is high

The structure of the belt filter press is relatively complex and inconvenient for daily maintenance, and has certain requirements for operators

[0012] 5. The centrifugal dehydrator has certain requirements for the solid-liquid ratio of the sludge, the structure is complicated, and the maintenance is inconvenient. Professional training is required for the operators.

[0013] To sum up, although the sludge treatment methods currently adopted are not the same, except for the drying bed (field), all of them are technically difficult to produce, high in investment costs, high in site requirements for equipment layout, and mechanical operation and management. The requirements are high, external force assistance and energy consumption are required to achieve the expected treatment effect, resulting in high operating costs, and the ability to respond to changes in the amount and quality of sludge is poor.

However, the sludge drying bed does not meet the technical requirements of mechanical equipment, so many enterprises face the problems of expensive equipment purchase, difficult equipment installation, difficult equipment operation and maintenance, and expensive equipment operating costs when supporting such environmental protection facilities.

However, in the process of using the drying bed, there are disadvantages such as low efficiency, large footprint, inability to continuously treat sludge, and being easily affected by the natural environment.

At present, there is no high-efficiency sludge treatment equipment with low energy consumption and mechanical treatment of drying bed (field) in the market

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