Pre-treatment method for improving anaerobic treatment efficiency of etimicin sulfate synthetic wastewater

An etimicin sulfate and anaerobic treatment technology, applied in anaerobic digestion treatment, special compound water treatment, multi-stage water treatment, etc., can solve the problems of high COD in effluent, poor THF bioavailability, and poor COD removal effect , to achieve the effect of improving biochemical performance, improving COD removal efficiency and reducing pollutant discharge

Inactive Publication Date: 2019-01-18
CHANGZHOU FANGYUAN PHARMA +3
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  • Abstract
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  • Application Information

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Problems solved by technology

Gentamicin C1a has a strong inhibitory effect on both Gram-positive and negative bacteria, and the bioavailability of tetrahydrofu...

Method used

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  • Pre-treatment method for improving anaerobic treatment efficiency of etimicin sulfate synthetic wastewater

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Inoculate anaerobic sludge in the pretreatment tank, and add etimicin sulfate wastewater (COD>10000mg / L) into the pretreatment tank. The inoculation volume of anaerobic sludge is 1 / 3 of the effective volume of the pretreatment tank. The remaining volume of the treatment tank is filled up with etimicin sulfate wastewater. Then add K to etimicin sulfate wastewater 2 HPO 4 , the K added to the pretreatment pool 2 HPO 4 The concentration is 8 mg / L, and the wastewater and anaerobic sludge in the pretreatment tank are stirred intermittently with a mixer, and the stirring speed of the mixer is 180 rpm.

[0044] In the preprocessing process, every 8h is a cycle, and each cycle can be divided into 3 stages:

[0045](I) The treatment time of the first stage is 3 hours. In this stage, a mixer is used to continuously stir, and folic acid is continuously and uniformly added to the etimicin sulfate wastewater. The total concentration of folic acid added is 30mg / L. The middle pH ...

Embodiment 2

[0050] Inoculate anaerobic sludge in the pretreatment tank, and add etimicin sulfate wastewater (COD>10000mg / L) into the pretreatment tank. The inoculation volume of anaerobic sludge is 1 / 4 of the effective volume of the pretreatment tank. The remaining volume of the treatment tank is filled up with etimicin sulfate wastewater. Then add K to etimicin sulfate wastewater 2 HPO 4 , the K added to the pretreatment pool 2 HPO 4 The concentration is 9 mg / L, and the wastewater and anaerobic sludge in the pretreatment tank are stirred intermittently with a mixer, and the stirring speed of the mixer is 180 rpm.

[0051] In the preprocessing process, every 8h is a cycle, and each cycle can be divided into 3 stages:

[0052] (I) The treatment time of the first stage is 3 hours. In this stage, a mixer is used to continuously stir, and folic acid is continuously and uniformly added to the etimicin sulfate wastewater. The total concentration of folic acid added is 45mg / L. The middle pH...

Embodiment 3

[0057] Inoculate anaerobic sludge in the pretreatment tank, and add etimicin sulfate wastewater (COD>10000mg / L) into the pretreatment tank. The inoculation volume of anaerobic sludge is 1 / 6 of the effective volume of the pretreatment tank. The remaining volume of the treatment tank is filled up with etimicin sulfate wastewater. Then add K to etimicin sulfate wastewater 2 HPO 4 , the K added to the pretreatment pool 2 HPO 4 The concentration is 13mg / L, and the wastewater and anaerobic sludge in the pretreatment tank are intermittently stirred by a mixer, and the stirring speed of the mixer is 180rpm.

[0058] In the preprocessing process, every 8h is a cycle, and each cycle can be divided into 3 stages:

[0059] (I) The treatment time of the first stage is 3 hours. In this stage, a mixer is used to continuously stir, and folic acid is continuously and uniformly added to the etimicin sulfate wastewater. The total concentration of folic acid added is 50mg / L. The middle pH va...

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Abstract

The invention discloses a pre-treatment method for improving anaerobic treatment efficiency of etimicin sulfate synthetic wastewater and belongs to the field of wastewater treatment. The invention aims at providing the pre-treatment method for the etimicin sulfate synthetic wastewater, which can be used for remarkably improving the subsequent treatment efficiency of an anaerobic reactor and can beused for greatly reducing COD (Chemical Oxygen Demand) of output water of the anaerobic reactor. According to the technical scheme, the pre-treatment method comprises the following steps: S1, inoculating anaerobic sludge into a pre-treatment tank; adding the etimicin sulfate wastewater into the pre-treatment tank; S2, adding K2HPO4 into the etimicin sulfate wastewater and intermittently stirringthe wastewater and the anaerobic sludge in the pre-treatment tank by utilizing a stirring machine; S3, taking each 8 hours as one cycle period in a pre-treatment process, wherein each cycle period canbe divided into three phases. The pre-treatment method disclosed by the invention is applicable to pre-treatment of the etimicin sulfate synthetic wastewater.

Description

technical field [0001] The invention relates to a wastewater pretreatment method, in particular to a pretreatment method for improving the anaerobic treatment efficiency of etimicin sulfate synthesis wastewater. Background technique [0002] Etimicin sulfate is an aminoglycoside antibiotic commonly used in clinical practice. It is mainly obtained by chemical synthesis of gentamicin C1a. During its production, a large amount of synthetic wastewater is produced. The wastewater contains part of gentamicin C1a and THF residues At present, high-concentration etimicin sulfate synthetic wastewater (COD>10000mg / L) is usually biologically treated by anaerobic method. Gentamicin C1a has a strong inhibitory effect on both Gram-positive and negative bacteria, and the bioavailability of tetrahydrofuran is poor. If the high-concentration wastewater is directly anaerobic, the COD removal effect is poor, resulting in effluent COD is high. Therefore, there is an urgent need in this area...

Claims

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Application Information

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IPC IPC(8): C02F3/28C02F101/38C02F103/34
CPCC02F3/286C02F2301/043C02F2301/08C02F2305/06C02F2103/343C02F2101/38
Inventor 陈代杰胡东辉刘鹏宇李兴刚陈舟舟戴俊
Owner CHANGZHOU FANGYUAN PHARMA
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