Sewage treatment plant operation and maintenance technical scheme

(1) Proficient in their own business

Sewage and sludge treatment depends on the principles of physics, chemistry and biology to complete, to use large structures, machinery, equipment and automatic control devices, but also involves a variety of testing means, which requires all operation management personnel in addition to a certain degree of education, in physics, chemistry and microbiology knowledge should have higher requirements, It also includes mechanical and electrical knowledge.

(2) Abide by rules and regulations

In order to ensure the stable operation of sewage treatment plants, in addition to operational management personnel should have business knowledge and ability, there should be a series of rules and regulations to be followed. In addition to the post responsibility system, it also includes: facility inspection system, equipment maintenance system, shift system, and safe operation system.

Chapter II Technical and economic evaluation and operation management of sewage treatment plants

The technical and economic evaluation of sewage treatment plant can reflect the composition of the investment cost of the capital construction project, and is the basis and standard for evaluating the design scheme. The technical and economic evaluation of municipal sewage treatment plant is an important part of the construction of sewage treatment plant.

2.1 Technical and economic indicators

A series of technical and economic indicators are commonly used to measure the operation of urban sewage treatment plants, including the amount of treated sewage, discharge water quality, pollution removal efficiency, power consumption and energy consumption. In addition, the treatment plant should also make a series of operation reports.

2.2 Capital construction investment

Capital construction investment refers to all the funds needed for a construction project from preparation, design, construction, trial production to formal operation, including all expenditures that can be transferred to the value of fixed assets and "investment expenditures that should be written off".

The capital construction investment consists of project construction expenses, other capital construction expenses, project reserve expenses, equipment and materials price difference reserve expenses and interest during the construction period. In the estimation and estimate stage, the construction cost is usually referred to as the first part of the cost, and other capital construction costs are referred to as the second part of the cost. According to the time factor, it can be divided into statement investment and dynamic investment. Static investment refers to the first part of expenses, the second part of expenses and project reserves. Arterial investment refers to all expenses including equipment and materials price difference reserve and interest during the construction period.

2.3 Production cost estimation

Production cost estimates for municipal wastewater treatment plants usually include sludge treatment. Production cost estimation items include energy consumption expenses, pharmaceutical expenses, fixed assets basic depreciation expenses, overhaul fund deposit, daily maintenance and repair expenses, wages and welfare expenses, etc.

1. Energy consumption costs

Energy consumption costs include electricity, steam, tap water, coal and other energy consumption consumed during the permanent treatment process.

2, daily maintenance costs

The cost of daily maintenance and repair shall be extracted separately according to the nature of sewage and maintenance requirements.

3. Other expenses

Pharmaceutical expenses, employee wages and welfare expenses, labor insurance funds, pooling funds, basic depreciation expenses of fixed assets and other expenses are generally calculated on the basis of the average daily water treatment.

4. Income from comprehensive utilization of sewage and sludge

The comprehensive utilization of sewage and sludge can save resources and reduce costs as part of the income of the sewage treatment plant.

The cost estimate of urban sewage treatment plant is the sum of the above costs and the amount of supplementary treatment water, that is, the annual cost and unit cost are obtained.

2.4 Economic evaluation methods

Economic evaluation of construction project is an organic part and important content of feasibility study, and an important means of scientific decision-making of project and program.

The purpose of economic evaluation is to calculate the input cost and output benefit of the project according to the requirements of the national economic development plan, on the basis of the engineering technology research such as demand prediction, site selection and process technology selection, etc. Through the comparison of multiple schemes, the economic feasibility and rationality of the proposed project are demonstrated and analyzed, a comprehensive economic evaluation is made, and the best scheme is recommended after comparison. Provide scientific basis for project decision-making.

2.5 Running Records and Reports

An urban sewage plant, how much sewage is treated every day or the whole plant, how is the treatment effect, how is the energy saving and consumption reduction in the treatment process, what abnormal solutions and results in the treatment process are reflected by the operation records and reports of the sewage plant. The original records and reports of the municipal sewage plant are an important program record and archival material, which can provide managers with direct operation data, equipment data, financial data, analysis and laboratory data, and can rely on these data to calculate and adjust the process, analyze and judge the condition of facilities and equipment, adjust the operation situation, and propose the maintenance plan of facilities and equipment accordingly. Or according to the next step of production scheduling.