A kind of industrial wastewater treatment process

Abstract

The invention relates to an industrial wastewater treatment technology. The industrial wastewater treatment technology comprises the following steps of collecting the wastewater by a pipeline, filtering by a screen net, and sending into a dosage pretreatment reaction tank; adding alkaline liquid into the dosage pretreatment reaction tank to neutralize the wastewater until the pH (potential of hydrogen) value is 6 to 7, and adding an LS nanobiological circulating water treatment agent; sequentially sending supernantant in the dosage pretreatment reaction tank into an anaerobic reaction tank and an aerobic reaction tank to perform biochemical treatment; sending the settled sludge in the dosage pretreatment reaction tank into a sludge concentration tank to concentrate, and pressing the sludge into a sludge cake by a press filter; adding the LS nanobiological circulating water treatment agent into the effluent water of the aerobic reaction tank via a pipeline; sending the wastewater into a settling tank, refluxing the sludge in the settling tank into the anaerobic reaction tank and the aerobic reaction tank, and directly sending the effluent water of the settling tank into a pipeline network of a sewage treatment plant. The industrial wastewater treatment technology has the advantages that the sludge reduction effect is realized, the water quality is further purified, and the effluent effect is greatly improved.

Description

technical field [0001] The invention belongs to a sewage treatment process, in particular to an industrial wastewater treatment process using a biological treatment agent. Background technique [0002] Industrial wastewater generally includes wastewater generated by the operation of factories in industries such as printing and dyeing, papermaking, electronics, plastics, electroplating, hardware, printing, and food. It has the characteristics of large changes in water quantity and quality, poor biodegradability, and difficulty in degradation. There are various types of wastewater in wastewater from different industries. It is a complex pollutant, which is difficult to deal with and often requires a lot of treatment costs. The previous process generally adopts appropriate pretreatment methods according to the actual wastewater quality, such as flocculation, micro-electrolysis, adsorption, photocatalysis and other processes, to destroy the refractory organic matter in the waste...

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Problems solved by technology

[0003] Judging from the existing processes, some processes will increase the cost of the device to a certain extent, such as photocatalysis, etc., and some require the addition of a large amount of chemicals, and are prone to secondary pollution and a large amount of sludge. Adding PAM flocculation agent, micro-electrolysis, adsorption and other processes need to replace and clean the packing regularly, which increases the difficulty and cost of operation. The traditional biodegradation process also has disadvantages such as low treatment efficiency, difficulty in controlling operating parameters and operating effects, and some improved The input cost of the biodegradation process is relatively high, and the process is more complicated

[0004] In short, the existing industrial wastewater treatment process has problems such as high treatment cost, low removal efficiency of refractory organic pollutants, unstable process operation, and unsatisfactory treatment effect. It is necessary to develop a more economical, effective, convenient and safe treatment. craft

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