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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

AI Technical Summary

Problems solved by technology

The effect of single aerobic and anaerobic treatment is not ideal, and the current treatment methods for farm wastewater are not effective

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

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Experimental program
Comparison scheme
Effect test

Embodiment 1

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

Embodiment 2

[0040] Systems that use activated sludge to treat wastewater, such as Figure 1-2 As shown, it includes sequentially connected feed hopper 1, homogenization tank 2, biogas digester 3, upflow anaerobic sludge bed reactor 4, activated sludge reaction tank 5, micro-electrolysis reactor 10, baffled aerated biological The filter tank 6 and the ozone disinfection tank 7 are 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 with a biogas net storage and gas supply system. The biogas net storage and gas supply system sequentially includes a gas-water separator 91, a biogas desulfurization device 92, a first flame arrester 931, and a gas storage cabinet 94. The gas-water separator 91 is also connected to A biogas booster device 95 , a second flame arrester 932 , and a waste heat recovery device 96 .

[0041] The baffle biological aerated filt...

Embodiment 3

[0045] The method for using activated sludge to treat wastewater comprises the following steps,

[0046] A. Anaerobic digestion treatment:

[0047] The aquaculture wastewater enters the homogenization tank 2 through the feed hopper 1, and after being evenly prepared under the stirring action of the stirring device of the homogenization tank 2, it is passed into the biogas tank 3;

[0048] The aquaculture wastewater forms a mixed state under the action of the stirring device and the reflux spray system in the biogas tank 3, and the sediment produced in the anaerobic digestion process is discharged to the sludge concentration tank 8 through the sludge discharge port. 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 decomposes the organic matter in the remaining aquaculture wastewater into methane and carbon dioxide under the joint action of anaerobic bacter...

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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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