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Method for rapidly processing large-scale piggery wastes

A feces and waste water technology, applied in the field of environmental engineering, can solve the problems of long treatment period, poor treatment effect, high treatment cost, etc., and achieve the effects of easy drainage, reduced operating costs and good dehydration effect

Active Publication Date: 2016-04-20
NANJING AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] To sum up, the existing pig farm manure wastewater treatment process has the following problems: long treatment cycle, poor treatment effect (COD, ammonia nitrogen exceeding the standard, deep color), high treatment cost, and low degree of resource utilization

Method used

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  • Method for rapidly processing large-scale piggery wastes
  • Method for rapidly processing large-scale piggery wastes

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Embodiment Construction

[0022] figure 2 It is a process flow diagram of a large-scale pig farm manure wastewater treatment method in an embodiment of the present invention. Such as figure 1 As shown, the method includes the following treatment facilities: biological flocculation tank, sedimentation tank, sludge collection tank, biological coagulation reaction tank, special deslagging machine, microbial cultivation tank, collection tank, and sequencing batch aerobic granular sludge treatment facility ( SBR).

[0023] In the biological flocculation tank, the manure wastewater and the acidophilus JZ6 in the microbial culture tank are fully mixed under the action of a mixer, and the acidophilus JZ6 produces an efficient biological flocculant, which flocculates with the particulate matter and colloidal substances in the fecal wastewater Precipitation reaction. The manure wastewater stays in the biological flocculation tank for 1 hour, and the effective volume of the biological flocculation tank is 8m 3 , ...

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Abstract

The invention provides a method for rapidly processing large-scale piggery wastes. The method is specifically a biological coagulation oxidation technology. Main facilities contain a biological flocculation tank, a sedimentation basin, a slag collection tank, a biological coagulation reaction tank, solid-liquid separation equipment, a microbial cultivation tank, a collecting basin and a biological oxidation tank. The method is characterized in that specific heterotrophic microbes (acidophilic bacteria JZ6, preservation number: CGMCC No. 11036) are utilized to generate a biological flocculant; through adsorption bridging effect, charge neutralization effect and sweeping effect, the biological flocculant and SS, COD, ammonia nitrogen and total phosphorus in piggery waste water undergo polymerization to be deposited, and dehydration performance of piggery wastes is improved; separation is further carried out by the utilization of solid-liquid separation equipment; separated piggery wastes are used in production of organic fertilizers; and separated wastewater undergoes further biological oxidation treatment to realize up-to-standard release.

Description

1. Technical Field [0001] The invention relates to the treatment of manure wastewater from a large-scale pig farm, and belongs to the technical field of environmental engineering. 2. Background technology [0002] With the development of the breeding industry and the expansion of the scale of pig farms, the use of water flushing manure technology to clean manure, the discharge of pig manure sewage has also increased sharply. Take a pig farm with a breeding scale of 40,000 pigs per year as an example, the daily production of manure wastewater reaches more than 400 tons. Improper treatment of such a large amount of manure wastewater will cause serious pollution to the surrounding environment, especially the water body, which not only affects the health of humans and animals, but also hinders the healthy development of the breeding industry. Since pig farm manure wastewater contains a large amount of SS, COD, ammonia nitrogen, and total phosphorus, they are not only pollutants, but...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F103/20
CPCC02F1/001C02F1/5263C02F3/02C02F3/1263C02F3/30C02F3/34C02F9/00C02F2101/105C02F2101/16C02F2103/20C02F2301/08
Inventor 周立祥
Owner NANJING AGRICULTURAL UNIVERSITY
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