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A treatment process and technology for wastewater, applied in animal husbandry wastewater treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. Effect
Inactive Publication Date: 2017-05-31
HUAINING SENYUAN ECOLOGICAL BREEDING
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Problems solved by technology
[0003] In view of the existing problems, the purpose of the present invention is to provide a treatment process for pig waste water, which can effectively solve the pollution problem caused by pig manure and urine waste water
Method used
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Embodiment 1
[0023] A process for treating pig wastewater, comprising the steps of:
[0024] (1) Pretreatment: collect the pig raising wastewater, introduce it into the grid tank, and carry out coarse filtration, wherein the COD concentration of the pig raising wastewater is 8560mg / L, the ammonia nitrogen concentration is 382mg / L, and the total phosphorus concentration is 156mg / L;
[0025] (2) Regulate water quality: introduce the wastewater treated through step (1) into the regulating tank, add sodium hydroxide solution in the regulating tank, and adjust the pH of the wastewater to be 7;
[0026] (3) primary sedimentation treatment: introducing the waste water treated in step (2) into the primary sedimentation tank for preliminary precipitation to obtain solid feces residues, and introducing the solid feces residues into the sludge thickening tank;
[0027] (4) Flocculation treatment: the waste water in the step (3) is introduced into the reaction tank, and polyaluminum potassium chloride...
Embodiment 2
[0035] A process for treating pig wastewater, comprising the steps of:
[0036] (1) Pretreatment: collect the pig raising wastewater, introduce it into the grid tank, and carry out coarse filtration, wherein the COD concentration of the pig raising wastewater is 8560mg / L, the ammonia nitrogen concentration is 382mg / L, and the total phosphorus concentration is 156mg / L;
[0037] (2) Regulate water quality: introduce the wastewater treated through step (1) into the regulating tank, add sodium hydroxide solution in the regulating tank, and adjust the pH of the wastewater to be 7.5;
[0038] (3) primary sedimentation treatment: introducing the waste water treated in step (2) into the primary sedimentation tank for preliminary precipitation to obtain solid feces residues, and introducing the solid feces residues into the sludge thickening tank;
[0039] (4) Flocculation treatment: the waste water in the step (3) is introduced into the reaction tank, and polyaluminum potassium chlori...
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Abstract
The invention relates to a swine wastewater treatment process, and belongs to the technical field of wastewater treatment. The swine wastewater treatment process includes the following steps of pretreatment, water quality adjustment, primary sedimentation treatment, flocculation treatment, anaerobic treatment, secondary sedimentation treatment, SBR reaction treatment, final sedimentation treatment, disinfecting treatment and sludge treatment. In the treatment process, flocculation treatment is high in removal rate of all pollutants and can reduce pollution load for follow-up anaerobic treatment and SBR reaction, marsh gas generated in the anaerobic treatment process can be used for production and life, ordered and intermittent operation can be carried out on SBR reaction, SBR reaction can be managed mechanically and is convenient to operate. The treatment process is easy to operate, good in treatment effect and stable in water quality, and the output water quality meets the emission standard of <livestock and poultry industry pollutant emission standard> (GB18596-2001).
Description
technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a process for treating pig wastewater. Background technique [0002] With the large-scale and intensive development of my country's pig breeding industry, the problem of water pollution caused by wastewater generated during the breeding process has become increasingly serious, and it has become the main source of rural pollution in my country. Pig farm wastewater mainly comes from pig manure, pig urine and pig pen flushing water. Pig wastewater contains a large amount of organic pollutants, ammonia nitrogen, total phosphorus, and eggs of diseased insects, etc., and is directly discharged into rivers and lakes without treatment. The decomposition of organic matter consumes a large amount of oxygen in the water, causing a large number of aquatic animals such as fish to die in the water body; at the same time, the random discharge of pig raising wastewater is likely to ...
Claims
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Application Information
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