Investment analysis on sand and gravel separation and slurry water recovery
For instance, consider a concrete mixing plant with an annual output of 300,000 cubic meters and 25 mixing trucks. This setup serves as a practical example for evaluating investment costs and potential savings.
1. **Investment Costs**:
- To install a complete set of equipment tailored to the specific scale and conditions of each mixing station, the cost ranges from approximately 200,000 to 550,000 yuan per set.
- Civil engineering costs are handled directly by the client, with estimated expenses between 20,000 and 100,000 yuan. Thus, the total investment cost, combining equipment and civil engineering, amounts to around 400,000 yuan (360,000 + 40,000).
2. **Cost Savings Calculation**:
- **Sand and Gravel Recycling**: By recycling sand and gravel, the plant can save roughly 1,562 yuan per month. This is calculated by multiplying the monthly output of 30,000 cubic meters by 1.86 and then by 0.04%, with an average price of 70 yuan per ton.
- **Wastewater Recycling**: Recycling wastewater can save up to 9,000 yuan monthly. This is derived from the formula: (number of mixers * daily car washes * water used per wash - recycled water used) * 30 days * water price (3 yuan per ton).
- **Concrete Scrap Volume**: Recycling scrap concrete saves an additional 6,510 yuan monthly. This is determined by multiplying the monthly scrap volume (50 cubic meters) by 1.86 and the average sand and gravel price (70 yuan per ton).
- **Waste Cleaning Costs**: Savings here include reduced labor costs (2 workers at 1,200 yuan each per month plus other expenses totaling 2,600 yuan) and external freight costs for waste disposal (10 trucks at 20 yuan each plus landfill costs at 500 yuan, multiplied by two trips, resulting in 1,400 yuan).
- **Environmental Protection Costs**: These savings amount to 7,000 yuan per month, accounting for pollution discharge fees and compensation for surrounding residents affected by sewage.
Adding these together, the total monthly cost savings come to 28,072 yuan. Notably, if certain costs are absent in your specific case, they would be zero.
3. **Recovery Period**: To calculate the payback period, divide the total investment cost by the annual savings (monthly savings multiplied by 12). In this case, 400,000 yuan divided by (28,072 yuan x 12 months) equals approximately 1.4 years.
These figures are estimates and can vary based on individual circumstances. Clients should adjust the data according to their actual conditions to obtain a more precise payback period.
As a professional manufacturer of construction machinery, Qingdao Haizhou Heavy Industry Machinery Co., Ltd. boasts over 20 years of expertise in concrete machinery and soil stabilization equipment. We’ve pioneered innovations like dry mortar, mining-specific stations, and cement product mixing stations. Our equipment features advanced technology, enabling both manual and automatic operations with high precision and scalability. We cater to sectors such as commercial concrete, high-speed rail, airports, municipal projects, highways, and mining.
Our commitment lies in integrity, affordability, and exceptional service. Through partnerships with numerous companies, we aim to deliver quality solutions that meet diverse needs. We invite collaboration with industry professionals worldwide to achieve mutual success.
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