Treatment system for refractory biodegradable wastewater

A treatment system, biochemically difficult technology, applied in biological water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve problems such as high operating costs, low treatment efficiency, and complex operation and management , to achieve the effect of low maintenance cost, simple facility structure and simple maintenance

Active Publication Date: 2018-01-30
SICHUAN ACAD OF ENVIRONMENTAL SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects of high operating cost, complex operation management and low treatment efficiency in the prior art, and provide a kind of reoxygenation effect, low cost, continuous water intake and high impact load, easy operation and management, and easy treatment. Treatment system for refractory biodegradable wastewater with stable and up-to-standard effects

Method used

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  • Treatment system for refractory biodegradable wastewater
  • Treatment system for refractory biodegradable wastewater
  • Treatment system for refractory biodegradable wastewater

Examples

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Embodiment 1

[0030] The treatment system of the refractory biodegradable wastewater in this example is as follows: figure 1 , figure 2 , image 3 with Figure 4As shown, it consists of two-stage semi-aerobic biofilm filter, activated carbon biological aerated filter and suspended packing biological aerated filter connected in sequence, and the semi-aerobic biofilm filter is an anaerobic-semi-aerobic biological filter bed , the bottom of the pool is a concrete foundation, the side wall retaining wall 4 is made of bricks, and the pipe fittings of the water distribution system are all made of polyvinyl chloride resin (UPVC). 60-80 mm, the thickness of this layer is about 400 mm, the middle part uses gravel packing with a particle size of 10-50 mm, and the thickness is 300 mm, and the top uses fine sand with a particle size of 1.5 mm, and the thickness is 600 mm. The water in and out of the activated carbon aerated biological filter adopts the water inflow from the upper part and the water...

Embodiment 2

[0041] The treatment system of the refractory biodegradable waste water of this example is the same as the first embodiment except that there is no water distribution pool in front of the semi-aerobic biofilm filter.

Embodiment 3

[0043] The treatment system of the refractory biochemically degradable wastewater of this example is the same as the first embodiment except that there is no intermediate pool, and the activated carbon aerated biological filter is directly connected with the secondary semi-aerobic biofilm filter.

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Abstract

The invention belongs to the treatment system of refractory biochemically degradable waste water in the field of waste water treatment. The membrane filter is an anaerobic-semi-aerobic biological filter bed. The bottom layer of the filter bed is gravel packing with a particle size of 60-80 mm, the middle layer is gravel packing with a particle size of 10-50 mm, and the upper layer is fine sand with a particle size of 1.5 mm; The activated carbon aerated biological filter is filled with activated carbon packing, and the aeration device and backwashing equipment are installed. The aeration method is aeration at the bottom of the filter; the suspended packing is filled with cylindrical polyethylene plastic packing, and the aeration device is installed. , the aeration method is aeration at the bottom of the filter. The treatment system for refractory biochemically degradable wastewater provided by the invention has good reoxygenation effect, low cost, continuous water intake, high impact load, simple operation and management, and stable and up-to-standard treatment effect.

Description

technical field [0001] The invention belongs to the field of waste water treatment, and in particular relates to a treatment system for refractory biochemically degradable waste water. Background technique [0002] The environmental protection disposal and reuse of refractory biodegradable wastewater has always been one of the problems faced by industrial enterprises in our country. The types of refractory biodegradable wastewater are complex, mainly industrial wastewater, and the industries involve petrochemical, printing and dyeing, electroplating, pulp and paper, pharmaceuticals, pesticides and food, etc. The main characteristics are high concentration of organic matter, high toxicity, high chroma and high salinity , BOD / COD ratio is less than 0.3. Both the refractory biodegradable wastewater treatment methods provided by Chinese patents CN1295033 and CN101607751 require the use of electro-oxidation, which has high energy consumption, high operating costs, complicated op...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
CPCC02F3/02C02F3/1268C02F3/30C02F9/00
Inventor 雍毅吴怡钱骏付强马凡江竺美
Owner SICHUAN ACAD OF ENVIRONMENTAL SCI
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