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Zero-discharge treatment process for abamectin production wastewater

A technology for the production of abamectin and waste water, which is applied in water/sewage treatment, multi-stage water/sewage treatment, neutralized water/sewage treatment, etc. It can solve the problem that the treatment effect is not particularly ideal, the water outlet requirements cannot be met, and the residence time Long-term problems, to achieve the effect of resource utilization, less land occupation and good effect

Active Publication Date: 2021-11-12
湖南中车环境工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the residual abamectin potency and organic solvents, and the concentration of organic matter is too high, resulting in long residence time, high investment costs, and cannot meet higher effluent requirements, so overall, the treatment effect is not particularly ideal

Method used

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  • Zero-discharge treatment process for abamectin production wastewater
  • Zero-discharge treatment process for abamectin production wastewater
  • Zero-discharge treatment process for abamectin production wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] like figure 1 Shown, a kind of zero-discharge treatment process of Abamectin production waste water, comprises the steps:

[0047] (1) Collect the filtrate produced in the production process of the biopesticide abamectin into the adjustment tank, adjust the water quality and quantity, and adjust the pH of the waste water to 6-7 with acid or lye;

[0048] (2) Wastewater with stable water quality and quantity is first pumped into the four-effect evaporator by the feed pump, and evaporated by the large-flow forced circulation pump without stopping the heating cycle;

[0049] (3) The concentrated solution obtained after concentrating 10 times is sent to a dryer for further drying treatment, and the solid matter formed after drying is incinerated, and the evaporated condensate enters the intermediate pool;

[0050] (4) The condensate is pumped from the bottom of the UASB reactor after the water quality and quantity are stabilized in the intermediate pool. In the UASB reacto...

Embodiment 2

[0059] like figure 1 Shown, a kind of zero-discharge treatment process of Abamectin production waste water, comprises the steps:

[0060] (1) Collect the filtrate produced in the production process of the biopesticide abamectin into the regulating tank, adjust the water quality and quantity, and adjust the pH of the waste water to 6-7 with acid or lye.

[0061] (2) Wastewater with stable water quality and quantity is first pumped into the four-effect evaporator by the feed pump, and evaporated by the large-flow forced circulation pump without stopping the heating cycle;

[0062] (3) The concentrated solution obtained after being concentrated 20 times is sent to a drier for further drying treatment, and the solid matter formed after drying is carried out for incineration treatment, and the evaporated condensate enters the intermediate pool.

[0063] (4) The condensate is pumped from the bottom of the UASB reactor after the water quality and quantity are stabilized in the inter...

Embodiment 3

[0072] like figure 1 Shown, a kind of zero-discharge treatment process of Abamectin production waste water, comprises the steps:

[0073] (1) Collect the filtrate produced in the production process of the biopesticide abamectin into the adjustment tank, adjust the water quality and quantity, and adjust the pH of the waste water to 6-7 with acid or lye;

[0074] (2) Wastewater with stable water quality and quantity is first pumped into the four-effect evaporator by the feed pump, and evaporated by the large-flow forced circulation pump without stopping the heating cycle;

[0075] (3) The concentrated solution obtained after concentrating 30 times is sent to a drier for further drying treatment, and the solid matter formed after drying is incinerated, and the evaporated condensate enters the intermediate pool;

[0076] (4) The condensate is pumped from the bottom of the UASB reactor after the water quality and quantity are stabilized in the intermediate pool. In the UASB reacto...

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Abstract

The invention discloses a zero-discharge treatment process of abamectin production wastewater, which comprises the following steps: collecting wastewater generated in the production process of biopesticide abamectin into a regulating tank, regulating the water quality and the water quantity of the wastewater, and regulating the pH value at the same time; then feeding the wastewater into an evaporator for evaporation and concentration; feeding concentrated liquid obtained through evaporation into a drying machine to be dried, and feeding condensate obtained through evaporation into a middle water pool; feeding condensate in the middle water tank into a UASB reactor; feeding effluent passing through the UASB into a sedimentation tank; eanbling that sludge enters a sludge concentration tank, and effluent of the sedimentation tank enters a hydrolysis acidification tank; feeding effluent of the hydrolysis acidification pool into a biochemical pool; feeding effluent of the biochemical pool into an MBR membrane pool for mud-water separation; feeding the above into a reverse osmosis system; and feeding the reduced membrane concentrated water into an evaporator for evaporation and desalination. Compared with the prior art, the method has the advantages that a good harmless treatment effect can be achieved, and meanwhile, the production water cost can be reduced.

Description

technical field [0001] The invention relates to the field of wastewater treatment technology, in particular to a zero-discharge treatment technology for abamectin production wastewater. Background technique [0002] Abamectin production wastewater is a new type of pharmaceutical wastewater that has emerged in recent years. This type of wastewater has the characteristics of high organic matter load, high viscosity, pungent odor, and unstable water quality and quantity. It has certain toxicity and is difficult to biodegrade. Difficult to treat industrial wastewater. [0003] As the country pays more and more attention to environmental protection issues, the treatment of abamectin production wastewater has become very important and has become an important part of abamectin technology progress. Zero discharge of wastewater not only helps enterprises meet environmental protection requirements, but also recycles and reuses resources to a certain extent. [0004] At present, some...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F101/30
CPCC02F9/00C02F1/04C02F2001/007C02F1/66C02F3/30C02F1/441C02F2101/30Y02A20/131Y02W10/10
Inventor 陈来福瞿亚丽陈小奇余倍
Owner 湖南中车环境工程有限公司
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