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Method for synergistically treating antibiotic production wastewater

A technology for production wastewater and collaborative treatment, applied in natural water treatment, anaerobic digestion treatment, water treatment parameter control, etc., can solve the problems of small impact of anaerobic biological treatment, loss of treatment capacity, and high processing load of anaerobic biological treatment, To avoid the generation of resistance genes, reduce the content of suspended solids, and achieve the effect of enhanced removal

Inactive Publication Date: 2021-08-03
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to address the increase in suspended solids, especially the increase in protein particles, in the existing process of using enhanced hydrolysis to treat antibiotic wastewater, which leads to a significant reduction in the subsequent anaerobic sludge biological treatment capacity, making the anaerobic biological treatment unable to run stably, or even To solve the technical problem of losing processing capacity, a method for synergistically treating wastewater produced by fermentation antibiotics is provided. The invention selectively destroys antibiotics in wastewater by strengthening hydrolysis, and then performs coagulation treatment to separate suspended matter in water, and then passes through the fluidized bed. Separation and removal of ferric hydroxide colloids and macromolecular proteins in wastewater when the pH is adjusted back, and finally anaerobic biological treatment using UASB, etc., to efficiently remove COD in wastewater; antibiotics in the wastewater system treated by the method of the present invention are thoroughly removed , there is no antibiotic pressure in the system, and the generation and spread of antibiotic-resistant bacteria and drug-resistant genes can be completely controlled; the removal efficiency of suspended solids is high, the impact of subsequent anaerobic biological treatment is small, the treatment load of anaerobic biological treatment is high, and the removal efficiency of COD is high , and can run stably for a long time

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  • Method for synergistically treating antibiotic production wastewater
  • Method for synergistically treating antibiotic production wastewater
  • Method for synergistically treating antibiotic production wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0092] Example 1: Enhanced Hydrolysis-Coagulation-Ebullating Bed-UASB Technology Treatment of Fermented Oxytetracycline Production Waste Mother Liquor

[0093] 1. Enhanced hydrolysis

[0094] 1-1. Under stirring, add concentrated sodium hydroxide solution to the waste mother liquor produced by oxytetracycline, and adjust the pH of the waste mother liquor to 6 (usually the pH is 5 to 7, preferably 6);

[0095] 1-2. Pass the waste mother liquor after pH adjustment into the heat exchanger, and preheat the waste mother liquor, so that the temperature of the waste mother liquor will rise and reach 60°C (usually 40-60°C); then pass it into high pressure Heat steam to heat the waste mother liquor until the temperature of the waste mother liquor rises and remains at 110°C (usually 85-160°C), and the waste mother liquor is subjected to enhanced hydrolysis treatment at a temperature of 110°C (usually 85-160°C). Among them, the intensive hydrolysis treatment time is 1h (usually 0.5-6h);...

Embodiment 1A

[0138]Example 1A: Enhanced Hydrolysis-Coagulation-Ebullating Bed-UASB Technology Treatment of Fermented Oxytetracycline Production Waste Mother Liquor

[0139] 1. Enhanced hydrolysis

[0140] Same as Step 1 of Example 1.

[0141] 2. Coagulation treatment

[0142] Except that the dosing amount of polyferric chloride is different, the ratio of the mass of suspended matter in every 1L of wastewater to the mass of Fe in the added coagulant iron salt is 1:0.3, the rest are the same as step 2 of Example 1 .

[0143] After the coagulation treatment, the water quality of the coagulation wastewater was measured, and the results are shown in Table 1.

[0144] 3. Fluidized bed separation treatment

[0145] Same as step 3 of Example 1, the concentration of suspended solids in the fluidized bed treated wastewater is 212mg / L, which can be directly used as the influent of UASB; the COD of the wastewater treated by the fluidized bed decreases slightly, being 11780mg / L (usually 11000~1210...

Embodiment 1B

[0149] Example 1B: Enhanced Hydrolysis-Coagulation-Ebullating Bed-UASB Technology Treatment of Fermented Oxytetracycline Production Waste Mother Liquor

[0150] 1. Enhanced hydrolysis

[0151] Same as Step 1 of Example 1.

[0152] 2. Coagulation treatment

[0153] Except that the dosage of polyferric chloride is different, the ratio of the concentration of suspended solids per 1L of wastewater to the mass of Fe in the added iron salt is 1:0.5, and the rest are the same as step 2 of Example 1.

[0154] After the coagulation treatment, the water quality of the coagulation wastewater was measured, and the results are shown in Table 1.

[0155] 3. Fluidized bed separation treatment

[0156] Same as step 3 of Example 1, the concentration of suspended solids in the fluidized bed treated wastewater is 198mg / L, which can be directly used as the influent of UASB; the COD of the wastewater treated by the fluidized bed decreases slightly, being 11480mg / L (usually 11000~12100mg / L); al...

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Abstract

The invention discloses a method for synergistically treating antibiotic production wastewater, the method comprises the following steps: sequentially carrying out hydrolysis treatment, coagulation treatment, fluidized bed treatment and anaerobic biological treatment on the antibiotic production wastewater, and particularly, synergistically treating the antibiotic wastewater by adopting enhanced hydrolysis treatment, coagulation treatment, fluidized bed treatment and an up-flow anaerobic sludge bed reactor, and selectively destroying antibiotics in the wastewater before the wastewater enters an anaerobic biochemical system so that the antibiotic pressure of anaerobic microorganisms is relieved, and efficient anaerobic removal of COD in the wastewater is realized. Besides, screening and enrichment of antibiotics on drug-resistant bacteria and drug-resistant genes are blocked, so that control on the drug-resistant genes in the high-antibiotic wastewater treatment process is realized. The invention provides a combined process which is easy to operate, relatively low in cost, high in removal rate and good in stability aiming at the treatment of actual fermentation pharmaceutical wastewater, has wide adaptability and is suitable for popularization and application.

Description

technical field [0001] The invention relates to a high-efficiency and safe treatment technology for wastewater, in particular to a method for synergistically treating antibiotic production wastewater, that is, the efficient synergistic control of COD and drug-resistant genes in pharmaceutical wastewater, and belongs to the field of environmental engineering and high-concentration refractory wastewater treatment. Background technique [0002] my country is the main production base of fermented antibiotics in the world, and the production of fermented antibiotics plays an important role in my country's economy. The production of fermented antibiotics is mainly divided into fermentation, filtration, extraction and refining steps. Pharmaceutical wastewater has high chemical oxygen demand (COD), high concentration of colloids and suspended solids, complex composition, high concentration of antibiotics, and is a typical high-concentration refractory Organic waste water. The anaer...

Claims

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Application Information

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IPC IPC(8): C02F9/14
CPCC02F9/00C02F2103/343C02F1/52C02F1/66C02F3/28C02F1/28C02F2209/06
Inventor 杨敏田野田哲张昱
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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