Sewage treatment core process

Abstract

The invention discloses a sewage treatment core process. The sewage treatment core process comprises four conventional basic links including regulation, reaction, flocculation as well as filtration and sedimentation. In the whole process, control is performed on the basis of pH values of water bodies at process points, and various parameters can be set according to requirements of water inlet and outlet indexes. Following representative characteristics and advantages of an ion separation chemical of an applicant in actual application can be guaranteed sufficiently: the chemical feeding amount is small, 10-300 g of the chemical is fed per ton of water, solid-state chemical is fed directly without dilution, sewage is treated in real time without caching (the reaction speed is 3-15 min), the water body content removal rate is higher than 80%, various national sewage treatment emission indexes can be obeyed and met, water after treatment is colorless and free of off-smell and secondary hazardous chemical substances, and sludge produced through flocculation has low water content (smaller than 35%), is free of stink, is not adhesive and the like.

Description

technical field [0001] The invention relates to the field of sewage treatment processes and methods, in particular to a core process for sewage treatment. Background technique [0002] In recent years, with the development of population and economy, environmental problems have become increasingly serious, and our government and people have attached great importance to them. Among them, the problem of water pollution has become a more important problem among many environmental problems. Water pollution causes soil pollution, which in turn causes air pollution and destroys the overall ecological environment. The main sources of water pollution are domestic sewage and industrial sewage, among which industrial sewage bears the brunt. At present, sewage treatment is mainly divided into three technical methods: physical method, chemical method and biological method; most of the physical methods consume a lot of energy and require a lot of electric energy, including multi-effect e...

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Problems solved by technology

At present, sewage treatment is mainly divided into three technical methods: physical method, chemical method and biological method; most of the physical methods consume a lot of energy and require a lot of electric energy, including multi-effect evaporation, ionization, etc.; and chemical methods are usually in water. Add polymer oxidants and chemical flocculants (such as polyacrylamide (PAM) or polyaluminum chloride (PAC)); The shortcomings of settling, non-stirring, secondary chemical hazardous substances and high water content of sludge inevitably have relatively large problems in actual process and operation; for example, slow flocculation speed, water buffer and reaction supporting facilities occupy an area Large, serious waste of water resources and land, causing secondary pollution to the water environment, etc., the bigger problem is that the use of chemical flocculants will bring great trouble to the sludge treatment it produces, not only requires a lot of electric energy to drive Sludge filter press or centrifuge, and the sludge smells very smelly, and the moisture content of the sludge is still as high as 60% or more after the filter press treatment

Biochemical methods are currently widely used, especially in domestic sewage treatment. Its advantages are stability, effectiveness, and low operating costs, but its limitation is that it cannot treat waste water with high concentrations of organic matter and high salt and other poor biodegradability. It is very difficult to domesticate and cultivate bacteria, and even some chemical wastewater can kill biochemically active bacteria; this is the reason why our country’s urban sewage treatment plants are still powerless against landfill leachate and industrial wastewater despite their large scale

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