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Comprehensive treatment method for livestock dirt and integrated treatment device for livestock dirt wastewater

A technology for comprehensive treatment and livestock waste, applied in the directions of water/sewage multi-stage treatment, water/sludge/sewage treatment, dehydration/drying/thickened sludge treatment, etc., can solve the problem of insufficient recycling and multiple metal pollution High cost of materials and fuels, etc., to achieve the effect of improving the sterilization and disinfection effect, enhancing the sterilization effect, and improving the purification effect

Inactive Publication Date: 2013-07-10
成都凯迈环保技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] 1. In the sewage treated by the above method, the content of chemical oxygen demand, biochemical oxygen demand and suspended solids is still high. Although it can meet the discharge standard, it is still not enough to meet the needs of recycling;
[0016] 2. Because in animal husbandry, the additives of livestock feed contain heavy metal pollutants such as Cu and Zn, the sewage treated by the above method still contains more heavy metal pollutants;
[0017] 3. The sewage treated by the above method still has a high content of Escherichia coli and other bacteria, and if it is discharged into rivers or nature, it will cause water pollution and easily form plague
[0018] 4. The solid waste after solid-liquid separation and anaerobic treatment, usually due to the lack of drying equipment and high fuel costs, the solid manure that could have been dried as waste is directly discharged, and the utilization rate is low

Method used

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  • Comprehensive treatment method for livestock dirt and integrated treatment device for livestock dirt wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] In the comprehensive treatment method of livestock waste in this embodiment, first, solid manure and liquid manure are obtained through solid-liquid separation, and the liquid manure is purified through three major steps of anaerobic treatment, aerobic treatment and electrolytic treatment.

[0062] Specifically, this embodiment includes the following steps:

[0063] a. Collect solid manure and liquid manure from pigs in the anaerobic tank for anaerobic treatment;

[0064] The pig waste is collected into the anaerobic tank, and the preliminary solid-liquid separation is realized through sedimentation, filtration, etc., and anaerobic treatment is performed; the COD in the liquid manure after solid-liquid separation cr 、BOD 5 And the content of SS is extremely high, through anaerobic treatment, remove COD cr .

[0065] Before anaerobic treatment, pretreatment can be carried out through screen filtration and hydrolysis acidification to further improve the water purificat...

Embodiment 2

[0081] In the comprehensive treatment method of livestock waste in this embodiment, first, solid manure and liquid manure are obtained through solid-liquid separation, and the liquid manure is purified through three major steps of anaerobic treatment, aerobic treatment and micro-electrolysis treatment.

[0082] The difference from Example 1 is that in step d, the electrolytic cell performs micro-electrolysis treatment on liquid manure, and the device for micro-electrolyzing liquid manure in the electrolytic cell is a micro-electrolytic filler, and the micro-electrolytic filler is arranged inside the electrolytic cell.

[0083]The method of adding micro-electrolytic fillers in the electrolytic cell can carry out micro-electrolytic treatment. Compared with the method of electrolysis through electrode plates, no additional power supply is required, and it has the beneficial effects of small equipment size, small footprint, and easy layout.

[0084] Please refer to Embodiment 1 for...

Embodiment 3

[0087] In the comprehensive treatment method of livestock waste in this embodiment, first, solid manure and liquid manure are obtained through solid-liquid separation, and the liquid manure undergoes four major steps of anaerobic treatment, aerobic treatment, electrolytic treatment and ultraviolet sterilizing treatment. Achieve purification.

[0088] The difference from Example 1 is that, after step d, the liquid manure needs to continue to be subjected to ultraviolet sterilizing treatment, and the device for ultraviolet sterilizing treatment includes a plurality of quartz glass sleeves, each of which is equipped with As for the ultraviolet lamp, the plurality of quartz glass sleeves are arranged in an array structure, the distance between each two of the quartz glass sleeves is 50 mm, and the ultraviolet lamp is an ultraviolet lamp whose ultraviolet wavelength is in the UVC band. The method of ultraviolet sterilization is used to use the energy of ultraviolet photons to mutat...

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Abstract

The invention discloses a comprehensive treatment method for livestock dirt. The method comprises the following steps of: a, collecting solid manure and liquid manure of pigs in an anaerobic tank for anaerobic treatment; b, feeding the solid manure and the liquid manure which are subjected to anaerobic treatment into an aeration tank for aerobic treatment; and c, settling the solid manure and theliquid manure which are subjected to aerobic treatment, and performing slag-liquid separation. The solid manure and the liquid manure of the pigs are collected and settled in the anaerobic tank, are subjected to anaerobic treatment and aerobic treatment, and then are completely purified through electrolysis treatment, so that the content of chemical oxygen demand determined by a potassium dichromate method (CODcr), biochemical oxygen demand (BOD5) and suspended solids (SS) in the liquid manure can be greatly reduced; and meanwhile, the electrolytic reaction can eliminate heavy metal ions in the liquid manure and can further improve the purification effect of the liquid manure, so that the ecological pollution caused by heavy metal substances when the liquid manure is discharged or recycled after being purified is avoided.

Description

technical field [0001] The invention relates to a sewage treatment method and device, in particular to a comprehensive treatment method and equipment for livestock waste. Background technique [0002] In the animal husbandry industry, the sewage and wastewater produced by pigs, cattle, poultry and other animals are high-concentration organic sewage, which has the characteristics of high concentration of organic matter, large amount of suspended matter and large fluctuations in water volume. If these wastes are discharged in a concentrated manner or handled improperly, it will not only cause a large loss of available resources and reduce economic benefits, but also cause serious damage to the agricultural ecological environment. [0003] The method for treating manure in the prior art usually adopts processes such as filtration, sedimentation, solid-liquid separation, and biochemical treatment in sequence, and finally reduces chemical oxygen demand (CODcr), biochemical oxygen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F11/12
Inventor 张列平王选民
Owner 成都凯迈环保技术有限公司