Treatment process of breeding wastewater

A breeding wastewater and treatment process technology, applied in water/sewage treatment, multi-stage water/sewage treatment, flotation water/sewage treatment, etc., can solve the problem of low efficiency of ammonia nitrogen organic matter, and achieve the effect of improving treatment efficiency

Pending Publication Date: 2022-06-10
湖南金保树环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the breeding wastewater is mainly treated by the process of "pretreatment + biological treatment + disinfection treatment". This method has the advantages of low investment and low operating cost, but the efficiency of biological treatment of ammonia nitrogen organic matter is low, and it is easy to achieve adsorption equilibrium
In addition, the process does not involve terminal decolorization of aquaculture wastewater

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The treatment process of the aquaculture wastewater of the present embodiment comprises the following steps:

[0023] S1: solid-liquid separation of aquaculture wastewater after initial precipitation treatment.

[0024] No matter what system or comprehensive measures are adopted for the treatment of sewage in livestock and poultry farms, precipitation treatment must be carried out first to complete solid-liquid separation. This is an indispensable process link. Its importance and significance are mainly: The content of suspended solids in the discharged sewage is very high, up to 160,000 mg / L, and the corresponding organic content is also very high. The solid-liquid separation can greatly reduce the pollutant load in the liquid part; Prevent large solids from entering the subsequent processing links, prevent equipment blockage and damage, etc.

[0025] S2: adding a modified zeolite adsorbent to the aquaculture wastewater after initial precipitation for ammonia nitrogen...

Embodiment 2

[0032] The treatment process of the aquaculture wastewater of the present embodiment comprises the following steps:

[0033] S1: solid-liquid separation of aquaculture wastewater after initial precipitation treatment.

[0034] S2: adding a modified zeolite adsorbent to the aquaculture wastewater after initial precipitation for ammonia nitrogen adsorption, and turning on the stirring equipment at the bottom of the pool during the adsorption process to make the ammonia nitrogen in the aquaculture wastewater fully contact with the adsorbent. After the adsorption is completed, the supernatant is obtained after secondary precipitation. Among them, the ammonia nitrogen concentration in the aquaculture wastewater is 2000mg / L, and the mass-volume ratio of the modified zeolite adsorbent to the aquaculture wastewater is 30g / L.

[0035] The modified zeolite adsorbent is prepared by the following method:

[0036] The natural zeolite and alumina were mixed uniformly according to the mass...

Embodiment 3

[0040] The treatment process of the aquaculture wastewater of the present embodiment comprises the following steps:

[0041] S1: solid-liquid separation of aquaculture wastewater after initial precipitation treatment.

[0042] S2: adding a modified zeolite adsorbent to the aquaculture wastewater after initial precipitation for ammonia nitrogen adsorption, and turning on the stirring equipment at the bottom of the pool during the adsorption process to make the ammonia nitrogen in the aquaculture wastewater fully contact with the adsorbent. After the adsorption is completed, the supernatant is obtained after secondary precipitation. Among them, the ammonia nitrogen concentration in the aquaculture wastewater is 1500mg / L, and the mass-volume ratio of the modified zeolite adsorbent to the aquaculture wastewater is 40g / L.

[0043] The modified zeolite adsorbent is prepared by the following method:

[0044] The natural zeolite and alumina were mixed uniformly according to the mass...

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PUM

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Abstract

The invention discloses a culture wastewater treatment process which comprises the following steps: S1, adding a modified zeolite adsorbent into culture wastewater subjected to primary precipitation treatment, and carrying out secondary precipitation to obtain supernate; the modified zeolite adsorbent is prepared by mixing natural zeolite and aluminum oxide and then roasting; s2, firstly adding a decolorizing agent into the supernate obtained in the step S1, fully and uniformly mixing, then adding an inorganic polymer coagulant, forming flocs, then adding an organic polymer flocculant, and finally carrying out air flotation separation; and S3, carrying out catalytic oxidation treatment on the effluent subjected to air flotation separation to complete the treatment of the aquaculture wastewater. The process has the advantages of high culture wastewater treatment efficiency, capability of realizing deep decoloration of the culture wastewater and the like.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a treatment process of aquaculture wastewater. Background technique [0002] Aquaculture wastewater mainly includes feces, urine, residual chemical mixed water and some domestic sewage during aquaculture flushing. Precipitation of a large amount of suspended solids will block soil pores, resulting in a decrease in soil air permeability and water permeability. High concentrations of organic matter and ammonia nitrogen will cause soil nutrient imbalance, resulting in soil compaction and salinization, consuming dissolved oxygen in water, and causing water to turn black and odorous. Heavy metals such as zinc and copper that are often found in livestock and poultry feeds are easy to accumulate in the soil, resulting in excessive heavy metals in the soil and affecting crop growth. The pathogenic microorganisms and parasite eggs contained in the excrement and urine of livesto...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F101/16C02F101/30
CPCC02F9/00C02F2001/007C02F1/281C02F1/5245C02F1/56C02F1/24C02F1/725C02F2101/16C02F2101/30
Inventor 周孝芳谢田皋汤卫军
Owner 湖南金保树环保科技有限公司
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