For a sewage treatment plant, it is important to effectively control and manage the operating costs. Regardless of the plant scale and operation mode, all will formulate a reasonable costs and establish an adjustment mechanism for treatment costs. This is not only an effective way to control its own cost, but also is a strong basis for the government accounting.
This costs are mainly include equipment costs, energy consumption costs, chemical consumption, maintenance costs etc... How to minimize the cost, it is not only good for the industry, but also an urgent demand of society. Generally speaking, it include following parts. First, equipment costs. Equipment costs are an important part of the initial investment. The specific equipment is closely related to the nature of the wastewater. For example, stone cutting waste water and tannery wastewater, both are quite different. In general, biochemical methods need much higher cost than physical methods. Second, running costs. This mainly includes: electricity cost, management cost, chemical cost, maintenance cost and so on. The electricity cost and management cost are mainly determined by local actual conditions. However, The cost of chemicals and the maintenance cost are mainly determined by the equipment. For example, belt filter press and plate filter press, their working principle are different, so their running cost will also very different.
In fact, for a ETP, the cost is much more than the above mentioned. Take examples, such as: construction costs, sludge disposal costs etc... Therefore, on the whole, the plate filter press only accounts for a very small part of the entire sewage disposal plant investment.