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Industrial wastewater treatment method during diosgenin production process

A production process, turmeric saponin technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, dehydration/drying/concentrated sludge treatment, etc., can solve the problem of waste water not being discharged up to standard, and achieve break The chain degradation and cell metabolism speed up, the process scheme is improved, and the effect of reducing the concentration of organic matter in the effluent

Active Publication Date: 2012-09-12
陕西省环境科学研究院
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Problems solved by technology

[0004] The purpose of this invention is to provide a kind of processing method of industrial waste water in the turmeric saponin production process, different waste water is processed respectively, thereby reduced waste water treatment load, And fully consider the impact of high salt content in wastewater on the wastewater treatment system, and solve the problem that wastewater cannot be discharged up to standard after treatment

Method used

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  • Industrial wastewater treatment method during diosgenin production process
  • Industrial wastewater treatment method during diosgenin production process
  • Industrial wastewater treatment method during diosgenin production process

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Embodiment

[0064] (1) Hydrolysis waste liquid pretreatment system

[0065] 1) The hydrolysis waste liquid produced in the production process of turmeric saponin enters the hydrolysis waste liquid storage tank, the residence time is 10 hours, the water volume of the hydrolysis waste liquid is 80 tons / day, the COD is 91g / L, and the pH value is 0.1.

[0066] ) The waste water in the hydrolysis waste liquid storage tank is pumped to the first-stage hydrolysis waste liquid reaction tank, and the neutralizing agent CaO is added for neutralization until the pH value is 7, and then enters the second-stage hydrolysis waste liquid reaction tank, and flocculation is added Dosage of PAM is 2mg / L, and the residence time is 50 minutes. The reaction tank is equipped with a stirring device to accelerate the reaction.

[0067] ) The hydrolysis waste liquid after neutralization, including the gypsum and lime residue generated by the neutralization reaction, is discharged into the acid liquid dryi...

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Abstract

The invention relates to an industrial wastewater treatment method during diosgenin production process. In the industrial wastewater treatment method provided by the invention, according to water quality, the wastewater produced during diosgenin production process enters a hydrolysis waste liquid pretreatment system, a hydrolysate washing wastewater treatment system, a Rhizoma Dioscoreae Zingiberensis washing wastewater treatment system or a sludge treatment system for treatment; percolate produced from the hydrolysis waste liquid pretreatment system is treated through the hydrolysate washingwastewater treatment system; sludge produced from a first-stage up-flow anaerobic sludge bed (UASB), a second-stage UASB and a coagulation settling tank of the hydrolysate washing wastewater treatment system is treated by the sludge treatment system; supernatant from the Rhizoma Dioscoreae Zingiberensis washing wastewater treatment system is returned to Rhizoma Dioscoreae Zingiberensis washing process, while the bottom sludge is dried by an acid liquid drying yard of the hydrolysis waste liquid pretreatment system and then delivered out. The method adopts different treatment processes for wastewater of different water qualities, to improve pollutant removal rate, reduce operation cost, and guarantee up-to-standard water discharge.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment in the turmeric saponin industry, and relates to a treatment method for industrial wastewater in the turmeric saponin production process. Background technique [0002] With the development of turmeric processing industry, the pollution of saponin production wastewater is gradually serious. Three types of wastewater will be produced during the production of turmeric saponin, namely, turmeric washing wastewater, hydrolysis wastewater produced by acidification hydrolysis, and hydrolyzate cleaning wastewater. Turmeric saponin wastewater has the characteristics of large wastewater volume, large chroma, high concentration of organic matter, high acidity, and high salinity, and is difficult to treat. [0003] At present, turmeric saponin production wastewater generally adopts a combination of anaerobic-aerobic biological treatment process, supplemented by physical and chemical methods such ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F11/14
Inventor 孙长顺赵艺熊良虎张振文沈炳岗黄西川杜利劳吕亚鹏王丽香
Owner 陕西省环境科学研究院
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