Solid-liquid separation in pig effluents

Revista Brasileira de Engenharia Agrícola e Ambiental

Steinmetz, Ricardo L. R.¹  Bortoli, Marcelo²  Kunz, Airton¹ 

[1] Embrapa Suínos e Aves, Concórdia;UFSC, Florianópolis

关键词: swine manure;    flocculation;    coagulation;    PAM;    tannin    INTRODUÇÃO O Brasil se destaca no ramo do agronegócio mundial pois é considerado um dos maiores produtores de suínos;    tendo abatido mais de 27;    4 milhões de animais no ano de 2007 (IBGE;    2008);   

DOI  :  10.1590/S1415-43662010001100012

学科分类：农业科学（综合）

来源: Universidade Federal de Campina Grande * Centro de Ciencias e Tecnologia

【 摘 要 】

Swine production is growing fast in Brazil and the contribution of the modern swine production represented by confined animal feeding operations (CAFOs), has been very important. The high animal concentration in small areas point out a very intensive environmental impact due to the concentration of organic matter and nutrients in their effluents. There are a lot of alternatives to treat swine manure: physical physico-chemical and biological treatments; these processes can be used together and sequentialy. In this paper, a solid-liquid separation process was studied based on coagulation and flocculation with tannin extracts in a settling tank, that is used as a part of a swine manure compact treatment system to treat swine manure. The process was adjusted in a laboratory scale and some modification was introduced in the full scale plant. A comparison between the pre and post adjustment process was performed. The process modification increase the COD removal from 46 to 56% and the settled solids concentration in the effluent from settling tank was also reduced.

【 授权许可】

CC BY-NC