Coagulation, air floatation and membrane distillation integrated system for laboratory wastewater
A coagulation-air flotation, integrated system technology, applied in pathogenic microorganism wastewater treatment, water/sewage treatment, water/sewage multi-stage treatment, etc. question
Inactive Publication Date: 2021-07-06
JIANGSU UNSW CTET(YIXING) CO LTD
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Problems solved by technology
Therefore, the composition of laboratory washing wastewater is very complex, and it is difficult to characterize the types of pollutants qualitatively and quantitatively. It has become a typical point source pollution with high toxicity and hazards. Therefore, it is urgent to design a coagulation air flotation membrane distillation Integrated system treats laboratory wastewater
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Embodiment 1
[0025] like figure 1 As shown, a coagulation air flotation membrane distillation integrated system for laboratory wastewater includes a pretreatment device and a membrane distillation device; the pretreatment device includes a mixing tank 1, a flocculation sedimentation tank 2 and an air flotation tank 3 connected in sequence, and The top of the air flotation tank 3 communicates with the membrane distillation device. The mixing tank 1, the flocculation sedimentation tank 2 and the air flotation tank 3 are used for pretreatment to remove the surfactant in the laboratory wastewater and increase the surface tension of the wastewater, and the pretreated wastewater is reduced and harmless through the membrane distillation device Reduce waste water discharge, and make resourceful use of clean water obtained from distillation.
[0026] like figure 1 and figure 2 As shown, in this embodiment, a compound needs to be added to the mixing tank 1 to adjust the pH of the laboratory wast...
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The invention discloses a coagulation, air floatation and membrane distillation integrated system for laboratory wastewater, which comprises a pretreatment device and a membrane distillation device. The pretreatment device comprises a mixing tank, a flocculation and sedimentation tank and an air floatation tank which are communicated in sequence. The upper part of the air floatation tank is communicated with the membrane distillation device. A compound crushing mechanism is arranged in the mixing tank. The compound crushing mechanism comprises a feeding box arranged in the mixing tank, an air cylinder is vertically arranged above the feeding box, and a push plate is arranged on a piston rod of the air cylinder. A plurality of discharging holes are formed in the bottom of the feeding box, and crushing teeth in one-to-one correspondence with the small holes are arranged on the push plate. The mixing tank, the flocculation and sedimentation tank and the air floatation tank are adopted for pretreatment to remove a surfactant in the laboratory wastewater and improve the surface tension of the wastewater, the pretreated wastewater is subjected to reduction and innocent treatment through the membrane distillation device, wastewater discharge is reduced, and clean water obtained through distillation is recycled.
Description
technical field [0001] The invention relates to the field of waste water treatment, in particular to an integrated coagulation air-flotation membrane distillation system for laboratory waste water. Background technique [0002] Laboratory wastewater is mainly wastewater generated when cleaning laboratory containers. Due to the variety of water quality samples processed in the laboratory, acidification or alkalization treatment is usually required, and surfactants need to be added during the container cleaning process. Therefore, the composition of laboratory washing wastewater is very complex, and it is difficult to characterize the types of pollutants qualitatively and quantitatively. It has become a typical point source pollution with high toxicity and hazards. Therefore, it is urgent to design a coagulation air flotation membrane distillation The integrated system treats laboratory wastewater. Contents of the invention [0003] The purpose of the present invention is t...
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IPC IPC(8): C02F9/04
CPCC02F9/00C02F1/52C02F1/24C02F1/447C02F2103/003
Inventor 纪超王凯
Owner JIANGSU UNSW CTET(YIXING) CO LTD