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Is the cost of operation and maintenance of the stacked screw machine large?

Stacked screw machine is a very common sludge dewatering products, in various fields of solid-liquid separation, mud-water separation, popularization of Chengdu is very high. So, many people are concerned about the operation and maintenance cost of the stacking screw machine, which is described in detail below:

1, the construction cost of the stacking screw machine is very low.

No concentration pool is required, and the design is adapted to local conditions, reducing infrastructure costs and greatly reducing floor space.

2. Low design cost

The model and specification are already very mature. According to the processing capacity, a relatively standard drawing can be produced, which can basically be regarded as a standard part.

3. Low maintenance cost

The main body of the dehydrator has a self-cleaning function, so there is no need to use a large number of people to clean to prevent sludge blockage. Adopt low speed screw extrusion technology, low power consumption.

The electric control cabinet is equipped with an automatic control device, which can realize 24-hour automatic continuous unmanned operation from sludge transportation, liquid injection, concentrated dehydration to mud cake discharge, thus reducing labor costs.

It is assumed that the operating costs of the stacked screw sludge dewatering machine and the belt dewatering machine are compared with the following project parameters:

Project Type: Municipal Sewage Treatment Plant

Processing scale: 30000 t/d

Sludge output: 400 m3/d

Water content of inlet mud: ~ 99.2%

Amount of absolute dry sludge: 3.2 t-DS/d

Water content of mud: ~ 80%

Running time: 20h/d

Annual operation time: 320 days

According to the situation of this project, the equipment selection is a 2-meter bandwidth belt concentration and dehydration integrated machine with a main engine power of 10.25kw, or a Tianniwei TNW303 stacked screw sludge dehydrator with a power of 2.25kw.

According to the conditions of the same daily treatment capacity and dewatering effect, the water consumption and power consumption of the stacked screw sludge dewatering machine are the lowest, and the labor cost can be reduced, and the overall operating cost is the lowest.

Based on the treatment of 400 m3/d of residual sludge with a water content of 99.2 per day and 320 days of work per year, when purchasing spare equipment is not considered:

If tap water is used as the backwashing water of the belt machine, the use of the stacking screw machine can save 338800 yuan per year compared with the use of the belt machine, and the investment cost of the equipment can be recovered within half a year.

If the effluent from the sewage plant is used as the backwashing water of the belt machine, the use of the stacking screw machine can save 101100 yuan per year than the use of the belt machine, and the investment cost of the equipment can be recovered in about one year.

Through the above simple analysis, we must have a certain understanding of the operation and maintenance cost of the stacked screw sludge dewatering machine. But all kinds of dewatering machine, each other has advantages and disadvantages, or according to different customer requirements for selection and product description.

RELATED INFORMATION

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Origin and Development of Stacked Screw Sludge Dewatering Machine

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2023-12-21