Pharmaceutical chemical wastewater treatment device and treatment method thereof

A technology for chemical wastewater and treatment devices, which is applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. New environmental discharge standards, poor biodegradability of pharmaceutical and chemical wastewater, etc., to achieve the effects of easy equipment manufacturing industrialization, low process operating costs, and enhanced pretreatment effects

Active Publication Date: 2013-04-03
TAIZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From the current research status and engineering practice analysis, there are still some problems in the treatment process of high-concentration pharmaceutical and chemical wastewater, mainly including the following aspects: (1) The concentration of pharmaceutical and chemical wastewater pollutants is extremely high, and the physical and chemical treatment process must achieve ideal treatment As a result, the operating cost is very high, making it unbearable for general enterprises; (2) The biodegradability of pharmaceutical and chemical wastewater is poor, and it has obvious poisonous and inhibitory effects on microorganisms. Conventional pretreatment measures cannot improve the biodegradability of wastewater, resulting in The treatment efficiency of the biochemical system is poor or unstable; (3) There is still a disconnection in the coordination and connection of the physicochemical treatment process and the biochemical treatment process
At present, there is generally too much emphasis on the removal effect of physical and chemical pretreatment, and even in some cases, the removal rate is used as the only standard for evaluating and measuring the quality of physical and chemical treatment, while ignoring the important role of physical and chemical treatment in improving water quality and providing conditions for later biochemical treatment.
[0005] At the same time, with the "Chemical Synthesis Pharmaceutical Industry Water Pollutant Discharge Standard" (GB21904-2008), "Bioengineering Pharmaceutical Industry Water Pollutant Discharge Standard" (GB21904-2008), "Chinese Medicine Pharmaceutical Industry Water Pollutant Discharge Standard" (GB21906-2008), "Extraction Pharmaceutical Industry Water Pollutant Discharge Standard" (GB21905-2008), "Fermentation Pharmaceutical Industry Water Pollutant Discharge Standard" (GB21903-2008) and other new wastewater discharge standards for the pharmaceutical and chemical industries, The existing pharmaceutical and chemical wastewater treatment technology and traditional treatment process can no longer meet the new environmental discharge standards. The wastewater treatment plants of various pharmaceutical and chemical enterprises have the problem of upgrading the old wastewater treatment technology and improving the process standard, while the traditional technology and process can not meet the requirements. ideal treatment effect

Method used

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  • Pharmaceutical chemical wastewater treatment device and treatment method thereof
  • Pharmaceutical chemical wastewater treatment device and treatment method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Such as figure 1 As shown, a pharmaceutical and chemical wastewater treatment device includes a vertical flow coagulation sedimentation tank 1, a catalytic zero-valent bimetallic packed tower 2, a Fenton-like reactor 3, an anaerobic MBBR tank 4, and an aerobic MBBR tank connected in sequence 5. The solid-liquid separation system 6, the water outlet of the solid-liquid separation system 6 communicates with the aerobic MBBR pool, so that the effluent of the solid-liquid separation system 6 can flow back to the aerobic MBBR pool through the water outlet of the solid-liquid separation system 6 ; The vertical flow coagulation sedimentation tank 1 includes a vertical flow sedimentation tank 1 and a coagulation dosing device, and the coagulation dosing device is located above the vertical flow sedimentation tank 1 .

[0026] Utilize above-mentioned device to process the method for medical and chemical industry waste water, the specific steps of this method are as follows:

[...

Embodiment 2

[0036] A pharmaceutical factory in Zhejiang mainly produces three raw materials and preparations of fluoroquinolones, vitamins, and antibiotics, and also produces feed additives, veterinary drugs, and chemical intermediates, with an annual output value of 1 billion yuan. Due to the expansion of production scale, the enterprise needs to construct the second phase of sewage treatment project. The wastewater treatment scale of the second phase project is 500m thick wastewater 3 / d, dilute wastewater 700m 3 / d, the quality of its wastewater is shown in Table 1.

[0037] Table 1 Wastewater quality and quantity

[0038]

[0039] The waste water is treated by quality separation. After the concentrated waste water passes through the fine grid and enters the adjustment tank, it is pumped into the flocculation vertical flow sedimentation tank of the present invention with a lift pump, and PAC and PAM are added to the water inlet pipeline through the coagulation dosing system for co...

Embodiment 3

[0041] Embodiment 3: basically the same as Embodiment 1, the difference is: the hydraulic retention time in the anaerobic MBBR tank in step 4 is controlled at 8h.

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Abstract

The invention relates to a pharmaceutical chemical wastewater treatment device and a treatment method thereof. The treatment device comprises a vertical flow type coagulative precipitation tank, a catalysis zero valence bimetallic packing tower, a Fenton-like reactor, an anaerobic MBBR (Moving Bed Biofilm Reactor) pool, an aerobiotic MBBR pool and a solid-liquid seperation system which are sequentially connected. The treatment method is a catalysis zero valence bimetallic- Fenton-like-MBBR coupling treatment method. The treatment device has the advantages of being capable of simultaneously treating multiple organic pollutants, occupying a small area and being simple in structure and easy for finalization and industrialization. The catalysis zero valence bimetallic packing tower enables the performance of reducing and treating degradation-resistant organic matters to be stronger, does not harden after running for long-term and is suitable for a wide pH value range and low in operating cost, and the consumption of metallic iron is little. The Fenton-like reactor is faster in oxidation reaction rate and suitable for the wide pH value range. The pharmaceutical chemical wastewater treated by the wastewater treatment method provided by the invention can reach the new emission standard of wastewater in a pharmaceutical chemical industry.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a medical and chemical wastewater treatment device and a treatment method thereof. Background technique [0002] During the production process of the pharmaceutical and chemical industry, a large amount of organic wastewater is discharged, which has caused great harm to the water environment. Most of the wastewater in pharmaceutical and chemical enterprises is high-concentration toxic and harmful wastewater. The complexity and harmfulness of its water quality have always been one of the most difficult wastewater in the field of industrial water treatment, which has caused great pressure on the company's environmental protection, energy conservation and emission reduction. [0003] Pharmaceutical and chemical wastewater mainly refers to the wastewater discharged during the production of pharmaceutical products or pharmaceutical intermediates. It has variou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 蒋胜韬管玉江白书立王三秀祝建中
Owner TAIZHOU UNIV
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