Coagulation-anaerobic hydrolysis-aerobic synergistic treatment cutting fluid wastewater device and method

An anaerobic hydrolysis and synergistic treatment technology, applied in aerobic process treatment, anaerobic digestion treatment, biological treatment equipment, etc., can solve the problems of slow growth and reproduction of anaerobic bacteria, collapse of anaerobic system, sensitivity to toxic substances, etc. Achieve the effect of improving biodegradability, reducing pollutant concentration, and low price

Inactive Publication Date: 2017-05-31
TIANJIN CHENGJIAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the slow growth and reproduction of anaerobic bacteria, which are sensitive to toxic substances and have strict requirements on the living environment, the anaerobic biological treatment process has high requirements for operation management and strict control of operating conditions, otherwise it is easy to cause anaerobic system collapse

Method used

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  • Coagulation-anaerobic hydrolysis-aerobic synergistic treatment cutting fluid wastewater device and method
  • Coagulation-anaerobic hydrolysis-aerobic synergistic treatment cutting fluid wastewater device and method
  • Coagulation-anaerobic hydrolysis-aerobic synergistic treatment cutting fluid wastewater device and method

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Embodiment 1

[0041] The cutting fluid wastewater discharged from a mechanical processing plant is operated through the method and parameters of the present invention, and after wastewater treatment, COD and BOD 5 , petroleum, suspended solids and pH all meet the requirements of the C-level discharge standard in the "Water Quality Standards for Discharge of Sewage into Urban Sewers (GB / T31962-2015)". See columns 1-5 and column 7 in Table 1 for details.

[0042] In order to verify the synergistic degradation effect of glucose on refractory organic matter in cutting fluid wastewater, the method of the present invention is also adopted to this cutting fluid wastewater, only glucose is not added in the aerobic reaction tank, and the operating parameters of other units are the same as listed in the present invention If they are the same, the effluent water quality of the third sedimentation tank is shown in column 6 in Table 1.

[0043] Comparing the data in columns 5 and 6 in Table 1, it can b...

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Abstract

The invention discloses a coagulation-anaerobic hydrolysis-aerobic synergistic treatment cutting fluid wastewater device and method. The device comprises a coagulating basin, a first sedimentation basin, an anaerobic hydrolysis tank, a second sedimentation basin, an aerobic reaction tank and a third sedimentation basin, wherein aluminum polychloride and polyacrylamide are added into the coagulating basin; alkali is added into the anaerobic hydrolysis tank, so that the pH value of a mixed solution in the hydrolysis tank is maintained in a proper range; and glucose is added into the aerobic reaction tank to achieve synergistic degradation of partial refractory organics. The method disclosed by the invention is simple, feasible and convenient to operate and manage, so that the removal rate of COD (chemical oxygen demand) and petroleum in cutting fluid wastewater can reach 99% or higher, and the COD, BOD5, petroleum, suspended solid content and pH value of the system effluent meet the requirements of C-level emission standards in Wastewater Quality Standards for Discharge to Municipal Sewers (GB / T31962-2015).

Description

technical field [0001] The invention belongs to the technical field of sewage treatment in environmental engineering, and relates to a device and method for coagulation-anaerobic hydrolysis-aerobic cooperative treatment of cutting fluid waste water. Background technique [0002] Cutting fluid is a processing fluid used for cooling and lubricating during metal processing. It has various types and complex components. The common characteristics of cutting fluid wastewater are large oil content and strong stability, high content of organic matter, and poor biodegradability (that is, difficult to biodegrade). Commonly used treatment methods for cutting fluid wastewater include physical and chemical treatment, advanced oxidation, and biochemical methods. [0003] (1) Physicochemical method [0004] When treating cutting fluid wastewater, the physical and chemical treatment methods include adsorption method, membrane separation method, air flotation method, acid precipitation met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F1/00C02F1/52C02F3/02C02F3/28C02F101/30C02F101/32C02F103/16
CPCC02F9/00C02F2001/007C02F2103/16C02F2101/30C02F2101/32C02F2203/004C02F2209/06C02F2209/08C02F2209/10C02F2301/043C02F2301/08C02F3/02C02F1/52C02F3/28Y02W10/10
Inventor 于静洁王少坡尹季璇陈兆波王轼金付鑫白志冬孙力平
Owner TIANJIN CHENGJIAN UNIV
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