A wood-based panel waste water treatment system and process

Abstract

The invention provides an artificial board wastewater treatment system and technology. The artificial board wastewater treatment system comprises a physical-chemical separating tank, a water collecting and regulating tank, an air flotation reaction tank, a water distributing trough, an anaerobic fluidization bed, a hydrolysis fluidization bed, an aerobic fluidization bed, a coagulation reaction tank, a micro-filtering device, an O3 oxidation column, a clear water tank and an accident tank, wherein the machine is characterized in that three grade biological fluidization beds of the anaerobic fluidization bed, the hydrolysis fluidization bed and the aerobic fluidization bed are combined to perform biological wastewater treatment. Compared with the conventional artificial board wastewater treatment technology by using a fixing bed and an activated sludge system, the machine disclosed by the invention is adopted for treating artificial board waste water by designing the technological parameters of relevant working procedures, and the machine has unique advantages in the aspects of treating organic waste water which is high in concentration and difficult to degrade. Key equipment of the system is small in volume, the whole system has stronger resistance to impact load, the sludge is sufficiently degraded, and the problem of sludge bulking is solved.

Description

technical field [0001] The invention relates to a wastewater treatment system and process, in particular to a wood-based panel wastewater treatment system and process, and belongs to the technical field of environmental engineering. Background technique [0002] In the production process of man-made fiberboard, the waste water mainly comes from cork spiral drainage, fiber making, rainwater drainage, etc. Among them, the cork spiral drainage is the sewage extruded by the cork spiral extruding wood chips of the thermal mill. The main pollutants in this kind of waste water It is the water active substance produced in the fiber grinding process, the lost fine fiber and auxiliary materials. Such wastewater has the following characteristics: [0003] 1) The concentration of organic matter in the water is high, and the proportion of refractory organic matter is large. Among the pollutants in the MDF production wastewater, organic matter accounts for 88.8% to 91.2%, and inorganic ...

AI Technical Summary

Problems solved by technology

The industry generally adopts activated sludge treatment system or fixed bed bioreactor to treat wood-based panel wastewater. These methods are generally not very effective in treating the high-concentration and refractory organic wastewater produced in the production of wood-based panels. Large, insufficient sludge degradation results in too much sludge and many other shortcomings

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