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Method for treating pig-raising wastewater by using a micro-aerobic biological treatment device for dry-cleaning pig farm wastewater with low c/n ratio

A technology of microaerobic organisms and treatment devices, which is applied in the fields of animal husbandry wastewater treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc., and can solve the problems of incomplete treatment technology, high operating costs, and large infrastructure investment. , to achieve the effect of simple structure, convenient maintenance and low investment

Inactive Publication Date: 2017-01-11
HARBIN INST OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] The present invention aims to solve the problems that the existing technology for the treatment of low C / N ratio wastewater is not perfect, and there are problems such as complicated process, large capital investment, high energy consumption and high operating cost, and provides a low C / N ratio dry Microaerobic biological treatment device and method for treating pig wastewater from manure-cleaning pig farms

Method used

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  • Method for treating pig-raising wastewater by using a micro-aerobic biological treatment device for dry-cleaning pig farm wastewater with low c/n ratio

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specific Embodiment approach 1

[0018] Specific implementation mode one: combine figure 1 Illustrate this embodiment, the microaerobic biological treatment device of a kind of low C / N ratio dry pig farm waste water of this embodiment is composed of microaerobic reactor 1, sedimentation tank 2, muddy water dissolved oxygen pool 3, air blower 4, dissolved oxygen Sensor 5, air volume controller 6, sludge return pump 7, micro-oxygen reactor inlet pipe 8, micro-oxygen reactor outlet pipe 9, sedimentation tank outlet pipe 10, sludge return pipe 11, excess sludge discharge pipe 12, exposure Trachea 13 and valve 14 are formed; The top of described micro-oxygen reactor 1 is provided with micro-oxygen reactor water outlet pipe 9, and the mouth of mouth of described micro-oxygen reactor water outlet pipe 9 is arranged on the top of described sedimentation tank 2, so The upper part of the sedimentation tank 2 is provided with a sedimentation tank outlet pipe 10, and the bottom water outlet of the sedimentation tank 2 is...

specific Embodiment approach 2

[0019] Embodiment 2: This embodiment differs from Embodiment 1 in that: the upper part of the micro-oxygen reactor 1 is a cylinder, and the lower part is a cone, the height of which is 500 mm, and the diameter of the cylinder is 100 mm. Others are the same as the first embodiment.

specific Embodiment approach 3

[0020] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the sedimentation tank 2 is an inverted triangular pyramid with a height of 200 mm and a diameter of 380 mm. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to a micro-aerobic biological treatment device for low-C / N-ratio manure dry-collection pig farm wastewater and a method for treating pig farm wastewater, belongs to the technical field of sewage treatment and particularly relates to the micro-aerobic biological treatment device for low-C / N-ratio manure dry-collection pig farm wastewater and a method for treating pig farm wastewater. The micro-aerobic biological treatment device is used for solving the problems of complex process, large investment in infrastructure, high energy consumption and high operating cost since the low-C / N-ratio wastewater treatment technology is not perfect in the prior art. The device comprises a micro-aerobic reactor, a sedimentation tank, a muddy water dissolved oxygen tank, a blower, a dissolved oxygen sensor, an air flow control instrument, a sludge return pump, a micro-aerobic reactor water inlet pipe, a micro-aerobic reactor water outlet pipe, a sedimentation tank water outlet pipe, a sludge return pipe, a residual sludge discharge pipe, an aeration pipe and valves. The method comprises the following step of carrying out micro-aerobic treatment on wastewater through the micro-aerobic reactor so that anaerobic respiration, aerobic respiration, nitrification and denitrification coexist in the treatment system to remove pollutants. The micro-aerobic biological treatment device is used for treating pig farm wastewater.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a micro-aerobic biological treatment device for low C / N ratio dry cleaning pig farm wastewater and a method for treating pig wastewater. Background technique [0002] Pig wastewater mainly includes urine, residual feces, feed residues, and flushing water from pig houses. Pig wastewater generally has the characteristics of intermittent discharge, high organic matter concentration, high nitrogen and phosphorus content, low carbon-nitrogen ratio, and high suspended solids concentration, which are difficult to treat. If it is directly discharged into the environment without treatment, it will cause serious harm to natural water bodies and aquatic organisms. The specific water quality indicators of pig wastewater vary greatly depending on the scale and the way of cleaning manure. There are currently three main ways of cleaning manure in large-scale pig farms: flu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/34C02F3/30
CPCC02F3/30C02F3/34C02F2101/16C02F2101/30C02F2103/20C02F2301/04
Inventor 李建政孟佳李玖龄邓凯文
Owner HARBIN INST OF TECH
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