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A kind of sewage treatment system and sewage treatment method

A sewage treatment system and sewage technology, applied in the direction of water/sewage treatment, biological water/sewage treatment, flotation water/sewage treatment, etc., can solve the problems of imperfect treatment process, single treatment method, high treatment cost, etc., and achieve operation Low stabilization costs, improved operating conditions, and low investment costs

Active Publication Date: 2018-08-14
HEBEI ZHONGKE WEIDE ENVIRONMENTAL ENG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the existing urban primary sewage treatment system generally has the disadvantages of imperfect treatment process, single treatment method, high treatment cost and poor effect.

Method used

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  • A kind of sewage treatment system and sewage treatment method
  • A kind of sewage treatment system and sewage treatment method
  • A kind of sewage treatment system and sewage treatment method

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Embodiment Construction

[0033] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0034] After inspection, the quality of urban sewage water has the following characteristics:

[0035] 1. The composition of sewage is complex, containing a large amount of organic compounds, and the raw water is acidic. Therefore, necessary pretreatment devices are required to remove some organic matter and adjust the pH value, and then mix with other wastewater to facilitate subsequent biochemical treatment.

[0036] 2. B / C of sewage = 3000: 25000 = 0.12 < 0.3 The biodegradability is low, the total nitrogen content is 3500mg / L, and the total phosphorus content is 200mg / L. It is not suitable for direct biochemical treatment, and it contains certain refractory organic matter, so it must be First decompose these refractory compounds into small molecules and easily degradable organic substances.

[0037] 3. Due to the high COD value of...

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Abstract

The invention discloses a sewage treatment system and a sewage treatment method, which relate to the technical field of sewage treatment and include domestic sewage inlet pipes and factory anaerobic fermentation sewage water inlet pipes. After the coagulation tank is added with chemicals for pretreatment and sedimentation, it all enters the adjustment tank for adjustment, and then enters the internal electrolytic tank, air flotation tank, first-level ABR reaction tank, biological contact oxidation tank, secondary sedimentation tank, second-level ABR reaction tank, and MBR membrane bioreactor. , Security filter and nanofiltration device are filtered and discharged, and the comprehensive utilization of physical, chemical and biological methods is used to treat urban sewage. The invention has the advantages of reliable and efficient process, reasonable structure, strong adaptability, low cost of stable operation, low investment cost, convenient maintenance, reduced energy consumption, improved operating conditions, improved labor efficiency, guaranteed preliminary sewage treatment effect, and further reduces the total cost of sewage treatment.

Description

technical field [0001] The invention relates to the technical field of sewage treatment. Background technique [0002] At present, with the continuous development of urbanization and the continuous improvement of people's quality of life, people will produce a large amount of domestic sewage in their daily life, and at the same time, they will often produce a large amount of industrial waste water in industrial production, and the ensuing environmental pollution is becoming more and more serious. . Therefore, urban sewage treatment is an important issue that must be dealt with in the process of urban development. Whether urban sewage treatment is in place is directly related to the work, life and health of urban residents. Due to the complex composition of these sewage, containing a large amount of organic compounds, and the raw water is acidic, B / C=3000:25000=0.12<0.3, the COD value of the wastewater is high, and the discharge of this kind of sewage will cause more and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
CPCC02F1/001C02F1/24C02F1/442C02F1/46104C02F1/52C02F1/72C02F3/1268C02F3/28C02F9/00Y02E50/30
Inventor 张锋张磊杜静刘星华田茂志任强兵王凌云
Owner HEBEI ZHONGKE WEIDE ENVIRONMENTAL ENG CO LTD
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