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A combined treatment process and device for aquaculture wastewater with integrated control

A breeding wastewater and treatment process technology, which is applied in animal husbandry wastewater treatment, oxidized water/sewage treatment, water/sewage treatment, etc., can solve the problem of inability to completely treat multiple pollutants, low content of potential pollutants, large discharge volume at one time, etc. problem, to achieve the effect of improving the driving force of oxygen transfer, high oxygen utilization rate and reducing pollution

Active Publication Date: 2021-09-07
SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with urban domestic sewage and industrial wastewater, aquaculture water pollution has its unique characteristics, that is, low potential pollutant content, large primary discharge, and differences from common land-based sewage, which greatly increases the difficulty of treatment
[0003] In the prior art, although some treatment methods are mature aquaculture wastewater treatment methods, there are still certain limitations. A single water treatment technology often cannot completely deal with various pollutants in wastewater, and requires a variety of water treatment methods. The water treatment system composed of a combination of technologies treats wastewater for reuse, and can systematically remove suspended solids, harmful substances such as ammonia and nitrite in aquaculture wastewater, and pollutants such as heavy metals. , easy to manage, safe and reliable, improve the recycling of aquaculture wastewater, and can complete the purification of most pollutants in wastewater

Method used

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  • A combined treatment process and device for aquaculture wastewater with integrated control
  • A combined treatment process and device for aquaculture wastewater with integrated control
  • A combined treatment process and device for aquaculture wastewater with integrated control

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A combined treatment process for aquaculture wastewater with integrated control, comprising the following steps:

[0029] S1: Pretreatment: The aquaculture wastewater is roughly filtered through the filter tank, and then pumped into the adjustment tank, the pH value of the aquaculture wastewater is adjusted to 6, and the flocculant is added according to 0.1% of the influent quality, and then 0.1% of the influent quality is added. , stand still, carry out solid-liquid separation and take the supernatant; wherein, 10 minutes before adding the flocculant, carry out ultrasonic treatment with an ultrasonic frequency of 100 kHz, and stop the ultrasonic treatment after 5 minutes after the flocculation is completed;

[0030] S2: Oxidation treatment: adjust the pH value of the supernatant in step S1 to 3, and then pump it into the decomposition tank for pulse aeration treatment with a pulse period of 5 minutes to maintain the gas circulation in the decomposition tank and control th...

Embodiment 2

[0037] Different from Example 1, a combined treatment process for aquaculture wastewater with integrated control comprises the following steps:

[0038] S1: Pretreatment: the aquaculture wastewater is roughly filtered through the filter tank, and then pumped into the adjustment tank, the pH value of the aquaculture wastewater is adjusted to 6.5, and the flocculant is added according to 0.2% of the influent quality, and then 0.2% of the influent quality is added. , stand still, carry out solid-liquid separation and take the supernatant; wherein, 10 minutes before adding the flocculant, carry out ultrasonic treatment with an ultrasonic frequency of 100 kHz, and stop the ultrasonic treatment after 5 minutes after the flocculation is completed;

[0039] S2: Oxidation treatment: adjust the pH value of the supernatant in step S1 to 3.5, and then pump it into the decomposition tank for pulse aeration treatment. The pulse period is 8 minutes to maintain the gas circulation in the decom...

Embodiment 3

[0044] Different from Example 1, a combined treatment process for aquaculture wastewater with integrated control comprises the following steps:

[0045] S1: Pretreatment: the aquaculture wastewater is roughly filtered through the filter tank, and then pumped into the adjustment tank, the pH value of the aquaculture wastewater is adjusted to 7, and the flocculant is added according to 0.3% of the influent quality, and then 0.3% of the influent quality is added. , stand still, carry out solid-liquid separation and take the supernatant; wherein, 10 minutes before adding the flocculant, carry out ultrasonic treatment with an ultrasonic frequency of 100 kHz, and stop the ultrasonic treatment after 5 minutes after the flocculation is completed;

[0046] S2: Oxidation treatment: adjust the pH value of the supernatant in step S1 to 4, and then pump it into the decomposition tank for pulse aeration treatment with a pulse period of 10 minutes to maintain the gas circulation in the decomp...

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Abstract

The invention discloses an integrated control combined treatment process and device for aquaculture wastewater. The process includes the following steps: S1: pretreatment; S2: oxidation treatment; S3: filtration treatment; S4: adsorption treatment; the device, It mainly includes a filter pool, a regulating pool, a decomposition pool, a pulse electric floating pool, an adsorption pool, a water pump, and a PLC controller; the regulating pool is connected to the filter pool through the water inlet pump 1, and the pulse electric floating pool is connected to the decomposition pool through the water pump 4, The adsorption pool is connected with the pulse electric floating pool through the water pump five and the PLC controller is electrically connected with the filter pool, regulating pool, decomposition pool, pulse electric floating pool, adsorption pool, water pump, and PLC controller. The invention has safe treatment process, no pollution, excellent degradation effect and can reach the discharge standard.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to an integrated control combined treatment process and device for aquaculture wastewater. Background technique [0002] In recent years, intensive aquaculture has developed rapidly at home and abroad, especially in my country, and its aquaculture production has accounted for about 2 / 3 of the world's aquaculture production. my country's current aquaculture industry is in a historical transition period from the traditional high-yield stocking model to large-scale farming, quality and benefit. , and in the process of aquaculture, the feed residues and pollutants formed by the excrement of fish, shrimp, and crabs have polluted the water body and pond sediment, making the aquaculture water body increasingly eutrophic, and affecting the surrounding water environment and ecological environment. caused increasing harm. In the aquaculture areas along some slow-flow ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/08C02F103/20
CPCC02F1/001C02F1/28C02F1/30C02F1/36C02F1/44C02F1/465C02F1/52C02F1/66C02F1/72C02F1/78C02F7/00C02F9/00C02F2001/007C02F2103/20
Inventor 曾东许振成林方敏魏东洋洪鸿加胡习兵胡丽琼
Owner SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP
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