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Method using waste residues generated by livestock and poultry wastewater treatment to produce soil conditioner

A technology for livestock and poultry breeding wastewater and soil conditioner, which is applied in soil conditioning materials, chemical instruments and methods, fertilizers made from biological waste, etc., to achieve zero discharge, good environmental benefits, and improved quality and added value.

Inactive Publication Date: 2017-07-28
深圳永清水务有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Not only can it completely and comprehensively solve the problem of waste environmental pollution generated in the process of livestock and poultry breeding wastewater treatment, and realize zero discharge of waste; it can also physically adsorb and then biodegrade antibiotics brought into organic fertilizers in waste, and pass heavy metals The addition of curing / stabilizing agents can prevent, control or passivate the pollution of heavy metals and prevent large-scale and serious agricultural non-point source pollution; in addition, the resource utilization of waste can turn waste into treasure and improve the quality of products produced. quality and added value

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The fecal solids separated from solid and liquid during the pretreatment process of livestock and poultry breeding wastewater are dehydrated by a screw extruder, and then 2.0% of wheat bran, 3.0% of crushed straw, and 1.0% of ore powder containing calcium and magnesium are added to adjust The pH value is 8.7, then add 2.0% calcium dihydrogen phosphate, 3% ammonium phosphate, 1.5% calcium sulfide, 1.0% modified zeolite, 4.0% fly ash, 0.5% rhamnolipid, 1.5% dihydrogen phosphate Potassium, 0.5% disodium ethylenediaminetetraacetic acid (EDTA), etc., mixed thoroughly, solid fermentation at 55-60°C for 200h, solid fermentation at 55-58°C for 160h after thorough mixing, and drying, etc., to obtain Ternary soil remediation improver.

[0027] Take by weighing a certain amount of contaminated soil containing 634mg / kg of lead, pretreatment and detection methods are carried out with reference to the "Soil Environmental Quality Standard" (GB15618-1995), and the obtained soil remedia...

Embodiment 2

[0029] In the pretreatment process of livestock and poultry breeding wastewater, the fecal solids separated from the solid and liquid and the dewatered slag produced during the coagulation and sedimentation process are mixed, dehydrated by a screw extruder, and 1.0% of crushed corncobs and 2.0% of crushed corncobs are added. Straw, 1.0% calcium oxide, adjust the pH value to 8.5. Then add 1.5% potassium phosphate, 1.0% ammonium chloride, 1.5% montmorillonite, 1.0% modified zeolite, 3.0% agricultural boiler coal ash, 1.0% calcium lignin, 1.5% dipotassium hydrogen phosphate, 0.5% ethyl Disodium diaminetetraacetic acid (EDTA), 0.5% bio-enzyme, etc., are fully mixed, solid-fermented at 55-60°C for 200 hours, and then dried to obtain a soil remediation improver.

[0030] Weigh a certain amount of contaminated soil containing 87.4mg / kg of cadmium. After the pretreatment and detection methods are carried out according to the "Soil Environmental Quality Standard" (GB15618-1995), the ob...

Embodiment 3

[0032] Solid-liquid separation feces, coagulation air flotation scum, anaerobic biogas residue, biological sludge, and struvite precipitation produced in the deammonization nitrogen process are produced during the treatment of livestock and poultry wastewater, and after mixing, they are dehydrated by a snail sludge dewatering machine , add 1.5% crushed peel residue, 0.5% crushed wheat bran, 0.5% calcium hydroxide, and adjust the pH value to 8.0. Then add 1.5% sodium dihydrogen phosphate, 0.5% attapulgite, 0.5% sodium sulfide, 1.5% modified zeolite, 5.0% agricultural boiler coal ash, 1.0% biological enzyme, etc., and mix thoroughly at 55-60°C Solid fermentation for 150 hours, followed by drying, etc., to obtain the soil remediation improver.

[0033]Weigh a certain amount of polluted soil containing 854.3mg / kg of copper. After the pretreatment and detection methods are carried out with reference to the "Soil Environmental Quality Standard" (GB15618-1995), the obtained soil reme...

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PUM

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Abstract

The invention provides a method using waste residues generated by livestock and poultry wastewater treatment to produce a soil conditioner. The method includes the steps of firstly, dewatering the waste residues obtained by livestock and poultry wastewater treatment to obtain an intermediate product A; secondly, adding a water content regulator to regulate water content, and adding a pH regulator to regulate pH to be 6-10 to obtain an intermediate product B, wherein the water content of the intermediate product B is 30-70%, and the water content regulator is crushed one or more agricultural and forestry waste; thirdly, adding nutrient additives and heavy metal curing and stabilizing chemicals into the intermediate product B, and evenly mixing to obtain an intermediate product C, wherein the nutrient additives are salt containing nitrogen, phosphorus or / and potassium; fourthly, performing solid fermentation on the intermediate product C at 55-60 DEG C for more than 100 hours, and drying to obtain the soil conditioner.

Description

technical field [0001] The invention relates to a method for producing a soil conditioner by using waste residue produced by treating livestock and poultry breeding wastewater, and belongs to the fields of resource utilization of industrial waste, circular economy and circular agriculture. Background technique [0002] With the rapid economic growth of our country and the improvement of the living standards of urban and rural residents, the livestock and poultry breeding industry in our country is also developing in the direction of scale and intensification. Since 2007, my country has optimized the production structure of animal husbandry, and a large number of large-scale livestock and poultry farms have been built one after another. Large-scale livestock and poultry farms are favored by people because of their advantages such as short breeding cycle, low cost, and easy management. The number of livestock and poultry breeding shows an obvious upward trend, but the environm...

Claims

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Application Information

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IPC IPC(8): C05G3/04C05G3/00C09K17/40C09K101/00C05G3/80
CPCC05B1/04C05B7/00C05G3/00C05G3/80C09K17/40C09K2101/00C05D3/00C05D9/00C05F3/00C05F5/002C05F11/00C05C3/00C05D3/02C05F7/00C05F11/08C05F9/04
Inventor 乔瑞平田华杨映刘君
Owner 深圳永清水务有限责任公司
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