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Method for recycling rural domestic sewage

A domestic sewage and recycling technology, applied in chemical instruments and methods, biological water/sewage treatment, water/sewage multi-stage treatment, etc., can solve problems such as waste sludge

Inactive Publication Date: 2021-09-14
江苏汇龙水务集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to propose a method of recycling rural domestic sewage, in order to solve the problem of waste sludge caused by the existing rural domestic sewage treatment, and to convert the nutrients in domestic sewage into substances that can promote agricultural production

Method used

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  • Method for recycling rural domestic sewage

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specific Embodiment approach

[0020] The technical solution of the present invention is not limited to the specific embodiments listed below, but also includes any reasonable combination between the specific embodiments.

specific Embodiment approach 1

[0021] Specific implementation mode one: the method for resource utilization of rural domestic sewage in this implementation mode is carried out according to the following steps:

[0022] Step one, remove impurities:

[0023] Filter rural domestic sewage through a filter device to remove large particles;

[0024] Step 2. Add bacteria:

[0025] Adding bacterial agents to the domestic sewage obtained in step one treatment;

[0026] The added amount of the bacterial agent is: every 1-1.1kg of domestic sewage is added with a mass fraction of 0.1% bacterial agent;

[0027] Step three, sewage cultivation:

[0028] The domestic sewage obtained in step 2 is transferred to the reactor for sewage cultivation, and the domestic sewage is cultivated for agricultural irrigation;

[0029] The process of sewage cultivation described in step 3 is: the filling amount of domestic sewage is 60-70% of the volume of the reactor tank, the temperature inside the reactor tank is set to 20-40°C, th...

specific Embodiment approach 2

[0034] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the particle size of the large particulate matter described in step one is greater than the particulate matter of 1mm.

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Abstract

The invention discloses a method for recycling rural domestic sewage, relates to a utilization method for recycling the rural domestic sewage and applying the rural domestic sewage to agricultural irrigation, and aims to solve the problem of waste sludge caused by existing rural domestic sewage treatment. The method comprises the following steps: filtering rural domestic sewage through a filtering device to remove large particulate matters, adding a microbial agent into the domestic sewage treated in the step 1, transferring the domestic sewage obtained in the step 2 into a reactor for sewage culture, and applying the cultured domestic sewage to agricultural irrigation. The domestic sewage cultured by the method is a water source containing probiotic liquid, and after fermentation, the content of pollutants in the water body meets the standard of irrigation water. The method can be directly used for agricultural irrigation and is simple in process. The method is suitable for rural domestic sewage treatment.

Description

technical field [0001] The invention relates to a utilization method for treating rural domestic sewage as a resource and using it for agricultural irrigation, and belongs to the field of environmental protection and resource utilization. Background technique [0002] The existing rural domestic sewage treatment basically follows the method of municipal sewage treatment. For example, intermittent activated sludge method, oxidation ditch method, continuous water inflow cycle delay aeration activated sludge method, biological nitrogen and phosphorus removal process A2 / O, etc. However, these methods only apply large-scale water treatment processes to small-scale domestic sewage treatment, and do not take into account that these domestic sewage comes from rural areas. The reason why rural domestic sewage pollutes water bodies is because there is no resource utilization. The root cause of water eutrophication is the high nutrients in the water, and rural rivers are the main wat...

Claims

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Application Information

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IPC IPC(8): C02F9/14
CPCC02F3/34C02F1/001
Inventor 张雷商文明陈国东赵航徐伟于利丽
Owner 江苏汇龙水务集团有限公司
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