Physicochemical-biochemical superimposed enhanced treatment system for printing and dyeing wastewater

A technology for strengthening treatment, printing and dyeing sewage, applied in water/sewage multi-stage treatment, flotation water/sewage treatment, water/sludge/sewage treatment, etc. Equipment impact and other problems, to achieve the effect of shortening sedimentation time, sediment deposition concentration, and reducing hydrodynamic impact

Active Publication Date: 2021-02-19
浙江鑫广环保科技有限公司
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Problems solved by technology

Most of these projects have large investment, large site occupation, impact on intermediate equipment in the process of sewage conversion, resulting in poor treatment effect, and lack of local targeted biochemical and physical and chemical measures

Method used

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  • Physicochemical-biochemical superimposed enhanced treatment system for printing and dyeing wastewater
  • Physicochemical-biochemical superimposed enhanced treatment system for printing and dyeing wastewater
  • Physicochemical-biochemical superimposed enhanced treatment system for printing and dyeing wastewater

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Embodiment Construction

[0028] The technical solutions of the present invention will be further specifically described below through the embodiments and in conjunction with the accompanying drawings.

[0029] Such as figure 1 As shown, in this embodiment, a physical-chemical-biochemical superimposed enhanced treatment system for printing and dyeing sewage includes a regulating tank for receiving production wastewater. Then enter the hydrolysis anaerobic process, enter the hydrolysis primary sedimentation tank 20 after the hydrolysis anaerobic, the hydrolysis primary sedimentation tank 20 is connected to the aerobic process, then enter the aerobic secondary sedimentation tank 30, the aerobic secondary sedimentation tank 30 is after the physical and chemical dosing treatment After entering the sedimentation air flotation II, the sedimentation air flotation II is distributed to the reuse water pool and the clean water pool through the waterfall and impact oxygenation. The first settling air flotation t...

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Abstract

The invention discloses a physicochemical-biochemical superposition type enhanced treatment system for printing and dyeing wastewater. The system is characterized in that the wastewater enters a firstsedimentation air-floating tank after being subjected to physicochemical treatment and chemical feeding in a regulating tank, and a spiral type gradually low-wall flow buffer slot is formed in the inner wall of the first sedimentation air-floating tank; then, the wastewater enters a hydrolysis anaerobic process and a hydrolysis primary sedimentation tank, and the hydrolysis primary sedimentationtank is formed by a plurality of single pools which are arranged from large to small and from outside to inside in a containing way; the system also comprises an aerobic process and an aerobic secondary sedimentation tank; the aerobic secondary sedimentation tank is internally provided with an oxygen gun, and the oxygen gun comprises an oxygen pump and an oxygen filling rack; a hanging nest is placed on the oxygen filling rack. The system greatly reduces the hydrodynamic impact of a static working pool, greatly shortens the sedimentation time, enables a treatment tank of the same size and volume to more quickly precipitate and realize more reasonable diversion, enables precipitates to deposit in a more concentrated way, and enables sewage, entering the next process, to be more single; theoxygen gun is arranged, so that the aerobic and biological nest-hanging breathing requirements are fully met, and the sewage treatment effect is further improved.

Description

technical field [0001] The invention relates to a sewage treatment technology in the printing and dyeing industry, in particular to a physicochemical-biochemical superimposed enhanced treatment system for printing and dyeing sewage. Background technique [0002] Textile printing and dyeing wastewater is one of the key pollution sources in my country's industrial system. According to statistics, the total amount of printing and dyeing wastewater discharged by the printing and dyeing industry ranks fifth in the total discharge of various industrial sectors in the country. In 2004, the discharge volume of the whole industry was 1.36 billion cubic meters, and its total pollutant discharge (calculated by COD) ranked sixth among all industrial sectors. Printing and dyeing wastewater is organic wastewater containing a certain amount of refractory biodegradable substances. Its pollutant concentration is high (COD) and its color is deep. It is one of the most difficult industrial was...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F103/30
CPCC02F1/24C02F3/30C02F9/00C02F2001/007C02F2103/30
Inventor 傅月坤
Owner 浙江鑫广环保科技有限公司
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