Method for combined anaerobic treatment of swine wastewater by using sepiolite and biomass charcoal

Abstract

The invention discloses a method for combined anaerobic treatment of swine wastewater by using sepiolite and biomass charcoal, and belongs to the field of the wastewater treatment. The method comprises the following steps: placing a waste biomass in sealed water solution, performing hydrothermal carbonization for 4 h in 190-200 DEG C, to obtain the biomass charcoal; firstly roasting the natural sepiolite in a muffle furnace and performing thermal modification, after cooling, mixing with the biomass charcoal in proportion, bagging by using a nylon porous bag, and placing in a reactor containinganaerobic sludge, and performing the anaerobic treatment on the swine wastewater. The method is capable of effectively improving a chemical oxygen demand (COD) in the swine wastewater of the anaerobic treatment and a removal rate of ammonia nitrogen, and effectively using a waste biomass material, simple in operation, low in cost and no secondary pollution, and has the social benefit and the economic benefit.

Description

technical field [0001] The invention belongs to the technical field of waste water treatment, and in particular relates to a method for combined anaerobic treatment of pig raising waste water by using sepiolite and biomass charcoal. Background technique [0002] With the increasingly large-scale operation of pig farming, the problems caused by pig farm wastewater are becoming more and more serious, which is one of the main factors that form agricultural non-point source pollution. Large-scale pig farming wastewater is a typical high-ammonia wastewater, which has an important impact on the quality of my country's surface water environment. Most of the large-scale pig farms in my country are equipped with anaerobic fermentation devices, but anaerobic technology can only remove organic matter and basically has no ability to remove ammonia nitrogen. Instead, the concentration of ammonia nitrogen in the discharged biogas slurry is high, COD / TN is low, and biodegradability is poor...

AI Technical Summary

Problems solved by technology

But there are also the following problems: (1) The outlet of manure or biogas slurry must be considered in the rainy season and non-fertilizer season; (2) The risk of spreading livestock and poultry diseases and human and animal diseases; (3) The ammonia nitrogen and total phosphorus produced during the degradation process Harmful gases pollute the atmosphere

But there are also the following problems: (1) the land occupation environment is relatively large; (2) the treatment effect is easily affected by seasonal and temperature changes; (3) it is easy to pollute groundwater

However, industrial processing requires high energy consumption, many mechanical equipment, a large amount of maintenance and management, and requires specialized technical personnel for operation and management costs.

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