In-situ purification treatment method for rural toilet wastewater in cold region in winter

A technology for purification treatment and cold area, applied in water/sewage multi-stage treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc., which can solve problems such as low treatment efficiency

Active Publication Date: 2021-12-10
SHENYANG INST OF APPL ECOLOGY CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the rural areas of northern my country, the winter climate is cold and lasts for a long time, and there is a problem of low processing efficiency in the application of MBBR in the northern region.

Method used

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  • In-situ purification treatment method for rural toilet wastewater in cold region in winter
  • In-situ purification treatment method for rural toilet wastewater in cold region in winter
  • In-situ purification treatment method for rural toilet wastewater in cold region in winter

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Embodiment 1

[0043] 1. Materials and methods

[0044] 1.1 Test equipment and materials

[0045] Schematic see figure 1 . MBBR is made of plexiglass, with a length of 30cm, a width of 20cm, a height of 20cm, a total volume of 12L, and an effective volume of 8L; the primary sedimentation tank is also made of plexiglass; water is fed through a peristaltic pump and a liquid rotameter and the hydraulic retention time is regulated; the reactor The bottom is equipped with a microporous gas explosion disc, the oxygen pump provides oxygen and rotates the suspended packing, and the gas rotameter regulates the aeration volume. Suspended filler in MBBR is polyethylene filler modified by surfactant and roughening agent. 25mm and 10mm, the specific surface area is 600m 2 / m 3 Around, porosity over 90%, specific gravity 0.95±0.02g / cm 3 , suitable for urban sewage, domestic sewage and industrial wastewater.

[0046] 1.2 Test water quality and analysis method

[0047] Pollutants in toilet wastewate...

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Abstract

The invention provides an in-situ purification treatment method for rural toilet wastewater in a cold region in winter, belongs to the technical field of sewage treatment, and particularly relates to a method for carrying out purification treatment on to-be-treated toilet wastewater by utilizing an aerobic biofilm-forming moving bed biofilm reactor. The purification treatment procedure is as follows: the water inlet temperature is 8-10 DEG C, the hydraulic retention time is 16-24 hours, and the aeration rate is 0.8-2.4 L / min. The temperature is set to be 8-10 DEG C, so that the requirement for low temperature in winter in northern areas is met, and the microbial activity can be kept; the hydraulic retention time is set to be 16-24 hours, so that the reaction time of microorganisms and the toilet wastewater to be treated is sufficient, and aeration is more sufficient; and the aeration rate is set to be 0.8-2.4 L / min, so that the best treatment efficiency of the MBBR process is favorably maintained.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an in-situ purification treatment method for rural water closet wastewater in cold winter regions. Background technique [0002] Traditional rural toilets are generally dry toilets. Dry toilets are easy to construct, and manure can also be used as farm manure to increase crop yields, so it is widely used. However, dry toilets pollute the environment, and the leaking feces and sewage will pollute the shallow groundwater. A large number of parasite eggs and microbes in the feces will pollute the soil and crops during the fertilization process, causing human drinking water and food to be polluted and the body damaged. In summer, dry toilets breed mosquitoes and flies, which are easy to spread parasitic diseases. [0003] The toilet problem has become a key factor restricting the development of rural economy and environment, and toilet reconstruction is an important way to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F3/08C02F3/10C02F3/20C02F3/30C02F101/16C02F101/38C02F101/10
CPCC02F3/108C02F3/109C02F3/087C02F3/205C02F3/301C02F3/302C02F3/308C02F2001/007C02F2203/006C02F2209/08C02F2209/14C02F2209/16C02F2209/18C02F2209/38C02F2209/40C02F2209/02C02F2209/44C02F2101/16C02F2101/38C02F2101/105Y02W10/10
Inventor 迟光宇赵文斌马建陈欣
Owner SHENYANG INST OF APPL ECOLOGY CHINESE ACAD OF SCI
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