Sewage purification and reuse process and equipment thereof

Abstract

The invention relates to a sewage purification and reuse process and equipment thereof which are applicable to small and medium heavy pollution enterprises; the sewage purification and reuse process adopts a composite efficient flocculant as a core pollution control reagent for the solid / liquid separation of sewage, and is achieved by three process steps, namely, precipitation and mud removal I, measurement and mixing II, and separation and purification III. The process and equipment thereof have small occupied area, less construction investment and low operation cost, is especially applicable to the sewage treatment of small and medium heavy pollution enterprises in paper, leather, printing and dyeing, electroplating, food, chemical industries, and the like, and can realize sewage reuse, environmental protection, and development of economic multiple benefits.

Description

technical field [0001] The invention relates to a sewage treatment process, in particular to a sewage purification and reuse process and equipment suitable for small and medium-sized heavy polluting enterprises. Background technique [0002] With the rapid development of my country's industrialization and urbanization, especially the rapid growth of national economic construction for many years, the output of domestic sewage and industrial wastewater is increasing. Most of the produced sewage contains a variety of toxic and harmful substances, polluting water bodies, polluting the environment, and endangering human health; especially the large number of small and medium-sized heavy polluting enterprises such as papermaking, tanning, printing and dyeing, electroplating, food, and chemical industry. The discharged industrial wastewater is even more harmful, and a slight carelessness in treatment measures will cause sudden environmental incidents. Now, treating sewage and prot...

AI Technical Summary

Problems solved by technology

However, if we conduct in-depth research and analysis, we can clearly see that a considerable number of cities and enterprises, especially many small and medium-sized enterprises, are indeed unable to raise the huge amount of construction funds required for the construction of sewage treatment facilities; The funds needed for construction have been raised by means, and they are no longer able to repay the huge principal and interest generated by the investment funds; they may receive preferential policies such as interest-free or subsidies, and are unable to pay high daily operation and maintenance costs

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