System and method for treating wastewater by applying activated sludge

A technology for activated sludge and wastewater treatment, applied in water/sludge/sewage treatment, water/sewage treatment, biological water/sewage treatment, etc. To achieve the effect of improving the purification strength, not easy to sludge bulking, and obvious effect of phosphorus removal

Inactive Publication Date: 2015-12-23
HANGZHOU DINGLONG ENVIRONMENTAL PROTECTION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The effect of single aerobic and anaerobic treatment is not ideal, an

Method used

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  • System and method for treating wastewater by applying activated sludge
  • System and method for treating wastewater by applying activated sludge

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0037] Example 1

[0038] A system that uses activated sludge to treat wastewater, such as Figure 1-2 As shown, it includes a feed hopper 1, a homogenization tank 2, a biogas tank 3, an upflow anaerobic sludge bed reactor 4, an activated sludge reaction tank 5, a micro electrolysis reactor 10, and a baffled aerated organism. Filter 6 and ozone disinfection tank 7, biogas tank is connected with sludge thickening tank 8; biogas tank 3 is also connected with a biogas net storage and supply system, which in turn includes a gas-water separator 91 and a biogas desulfurization device 92 , The first flame arrestor 931, the gas storage tank 94, and the gas-water separator 91 are also connected to a biogas booster 95, a second flame arrestor 932, and a waste heat recovery device 96.

Example Embodiment

[0039] Example 2

[0040] A system that uses activated sludge to treat wastewater, such as Figure 1-2 As shown, it includes a feed hopper 1, a homogenization tank 2, a biogas tank 3, an upflow anaerobic sludge bed reactor 4, an activated sludge reaction tank 5, a micro electrolysis reactor 10, and a baffled aerated organism. The filter tank 6 and the ozone disinfection tank 7, the biogas tank is connected with a sludge thickening tank 8, and a regulating tank 11 is provided between the biogas tank 3 and the upflow anaerobic sludge bed reactor 4. The biogas digester 3 is also connected to a biogas net storage and supply system, which in turn includes a gas-water separator 91, a biogas desulfurization device 92, a first flame arrestor 931, and a gas storage cabinet 94. The gas-water separator 91 is also connected Biogas booster 95, second flame arrestor 932, waste heat recovery device 96.

[0041] The baffled biological aerated filter 6 includes a two-stage biological aerated filt...

Example Embodiment

[0044] Example 3

[0045] The method of using activated sludge to treat wastewater includes the following steps:

[0046] A. Anaerobic digestion treatment:

[0047] The aquaculture wastewater enters the homogenization tank 2 through the feed hopper 1, and is uniformly adjusted under the stirring action of the stirring device of the homogenization tank 2, and then passes into the biogas tank 3;

[0048] The aquaculture wastewater forms a mixed state under the action of the stirring device in the biogas tank 3 and the backflow spray system. The sediment produced in the anaerobic digestion process is discharged to the sludge thickening tank 8 through the sludge discharge port. The sediment is concentrated after precipitation. The sludge pump is pumped away, and the remaining aquaculture wastewater is then passed into the upflow anaerobic sludge bed reactor 4;

[0049] The aquaculture wastewater undergoes the combined action of anaerobic bacteria, facultative bacteria and methanogens in th...

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Abstract

The invention relates to the technical field of sewage treatment and discloses a system for treating wastewater by applying activated sludge. The system comprises a feed hopper (1), a homogenizing tank (2), a biogas tank (3), an up-flow anaerobic sludge bed (4), an activated sludge reaction tank (5), a microelectrolysis reactor (10), a baffled biological aerated filter (BBAF) (6) and an ozone disinfection tank (7), which are connected in sequence, wherein the biogas tank is connected with a sludge thickening tank (8). The invention also discloses a method for treating wastewater by applying activated sludge. The method comprises anaerobic digestion treatment, treatment by adopting an activated sludge method, microelectrolysis reaction, biochemical treatment with the BBAF and ozone disinfection. The system and the method have the beneficial effects that the process is simple; the concentration gradient in the reaction process is large, so that sludge bulking is not easy to happen; the system has strong load impact resistance and good treatment effects; and the simultaneous denitrification and dephosphorization effects of the BBAF are obvious by adjusting the cycle of operation and controlling the working procedure time length.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, relates to a system for treating wastewater by using activated sludge, and in particular to a method for treating wastewater by using activated sludge. Background technique [0002] Livestock and poultry breeding wastewater has a lot of suspended solids, high ammonia nitrogen concentration, high organic concentration, and strong odor. In terms of its discharge, the discharge of organic matter is twice the discharge of industrial and urban domestic waste, and it also contains The characteristics of pathogens excreted by poultry are difficult to deal with, and it is difficult to meet the discharge standards after treatment by traditional processes. At present, most of the aquaculture wastewater adopts natural biological treatment technology, anaerobic treatment technology, aerobic treatment technology, mixed treatment technology and other biological treatment processes. The effect of sing...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F3/28C02F3/12C02F1/461C02F1/78
CPCY02E50/30Y02W10/10
Inventor 徐雪祥詹参明陈锋段冬燕
Owner HANGZHOU DINGLONG ENVIRONMENTAL PROTECTION SCI & TECH
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