Processing system and processing method for high concentration sewage in pig farm

Abstract

The invention discloses a processing system and a processing method for high concentration sewage in a pig farm. The processing system for the high concentration sewage in the pig farm comprises combined air flotation, a biological filter and a biochemical processing pool with a spherical membrane therein. The processing method for the high concentration sewage in the pig farm comprises two steps of primary physicochemical treatment and aerobic biochemical treatment. The processing system and the processing method have the beneficial effects that dry dirt can be used as an organic fertilizer to promote benign ecological circle development of pork production and drive optimization and adjustment of agricultural structures; the sewage in the pig farm is treated by the primary physicochemical treatment and the aerobic biochemical treatment, i.e., an A2O+MBBR method, so that expensive treatment cost can be reduced and the method is convenient for popularization; the high concentration sewage in the pig farm can be treated efficiently so as to meet a national discharge standard; recycled water is used for recovering the treated sewage, so that water source is saved; due to the application of an emulsion PAM, the content of organic materials in the sludge is increased while heat value of the sewage is kept; objects of sludge reduction and harmless treatment can be achieved; a sustainable development road is reserved for sludge resources; and paths of biochemical sludge utilization are broadened.

Description

technical field [0001] The invention relates to the field of pig production, in particular to a pig farm high-concentration sewage treatment system and a treatment method. Background technique [0002] Pig production is an important part of the rural economic chain, but the large amount and high concentration of sewage produced by pig production seriously affects the surrounding ecological environment and residents' lives, and is an urgent problem to be solved in large-scale pig farm production. At present, there are many studies on sewage treatment. In "Wastewater Treatment Engineering Design and Operation Commissioning of Pig Farms" ("Guangdong Agricultural Science" 2010, Volume 37, Issue 1), it was proposed to use anaerobic-aerobic-coagulation sedimentation process to treat high-concentration pig farm wastewater; Experimental Research on the Treatment of Pig Farm Sewage by MBBR Method" ("Journal of Changchun University of Science and Technology" 2009, Volume 32, Issue 1)...

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Problems solved by technology

Although these methods are much improved compared with traditional sewage treatment methods, in the process of sludge treatment, ecological cycle development and water recycling are ignored. Therefore, in order to solve the above problems, the present invention provides a new technical solutions

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