Treatment process of livestock and poultry breeding wastewater
A technology for livestock and poultry breeding wastewater and a treatment process, which is applied in the field of wastewater treatment and can solve problems such as affecting the denitrification and phosphorus removal effect of biochemical treatment, high pollutant content, and large influence on treatment effect.
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[0028] The present invention will be described in further detail below by means of specific embodiments:
[0029] The flow process of livestock and poultry breeding wastewater treatment process in the embodiment is basically as attached figure 1 Shown: Include the following steps:
[0030] 1. Pretreatment process
[0031] The livestock and poultry breeding wastewater passes through the primary sedimentation tank, coarse grid, fine grid, biogas tank and settling tank in sequence, and the preliminary solid-liquid separation is carried out on the livestock and poultry breeding wastewater, and the feces, feed residues and various excretions in the breeding wastewater Preliminary settlement and isolation of suspended solids such as solids, so that more than 90% of suspended solids in the aquaculture wastewater can be removed under the conditions of this process. The suspended solids formed in this process are solid A; at the same time, the methane produced in the biogas digester ...
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