Domestic sewage integrated treatment unit

A treatment device and domestic sewage technology, applied in biological water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve problems such as high cost, complicated process, high operation requirements, etc., and achieve improvement Efficiency, simple water quality components, and the effect of promoting oxygen dissolution

Inactive Publication Date: 2010-07-07
SHENYANG INST OF APPL ECOLOGY CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high content of N and P in traditional domestic sewage, microbial treatment alone cannot achieve standard discharge, and membrane filtration alone cannot remove N and P. Therefore, most MBR reactors should consider setting an anaerobic environment for nitrification, Denitrification is used to efficiently remove TN and TP, but this will make the process complicated, high in operation requirements, and relatively high in cost

Method used

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  • Domestic sewage integrated treatment unit
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Treatment device: one side of the reaction vessel 5 is provided with a water inlet pipe 10, one end of the water inlet pipe 10 extends to the inner bottom of the reaction vessel 5, and is connected with the aeration pipe 7 of the water inlet system at the bottom of the reaction vessel 5; the other section of the water inlet pipe 10 passes through the inlet The water pump 2 is connected with the primary sedimentation tank 1 automatically controlled by PLC, so that specific sewage enters the reaction vessel 5 . The cross-section of the upper end of the reaction vessel 5 is provided with an overflow tank 14 , the overflow tank 14 is connected to one end of the water outlet pipe 11 , and the other end of the water outlet pipe 11 is connected to the water storage tank 15 . The other side in the reaction vessel 5 is provided with an air intake pipe 12, one end extends to the bottom of the reaction vessel 5, and is connected with the aeration pipe 8 of the air intake system at ...

Embodiment 2

[0025] The difference from Example 1 is that the proportion of sewage is adjusted slightly, the hydraulic retention time and the air-water ratio are adjusted, and the treatment effect under the condition of lower organic load is observed.

[0026] The specific operating parameters are: hydraulic retention time 60min, air-water ratio 9:1, DO 3mg / l, sludge concentration 5000mg / l. The treated effluent water quality (see Table 2).

[0027] Table 2 Sewage Treatment Effect

[0028]

[0029]

[0030] As can be seen from Table 2, when the hydraulic retention time (HRT) was 60min, the COD removal rate had reached 83%, and the BOD 5 Reached 85.7%, ammonia nitrogen, TP removal rates also reached 36% and 38%, respectively, and the number of E. coli was still lower than 3 / L in random detection of water.

Embodiment 3

[0032] The difference from the examples is that the proportion of sewage is slightly adjusted, the hydraulic retention time and the air-water ratio are adjusted, and the treatment effect under relatively high organic load conditions is observed.

[0033] The specific operating parameters of MBR are: hydraulic retention time 120min, air-water ratio 9:1, DO 5mg / l, sludge concentration 6000mg / l. The treated effluent water quality index (see Table 3).

[0034] Table 3 Sewage Treatment Effect

[0035]

[0036] As can be seen from Table 3, when the hydraulic retention time (HRT) was 120min, the COD removal rate had reached 91%, and the BOD 5Reached 87.3%, ammonia nitrogen, TP removal rates also reached 44.6% and 51.6% respectively, and the number of E. coli was still lower than 3 / L in random detection of water. However, an excessively long hydraulic retention time will increase the aeration cost, and may therefore provide insufficient nutrients to affect the concentration of ac...

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Abstract

The invention designs a sewage treatment device and particularly relates to a domestic sewage integrated treatment unit used for treating the non-traditional sewage (no flushing water). The domestic sewage integrated treatment unit comprises a reaction vessel, biology filler and a micro-filtration membrane module, wherein a water inlet pipe 10 is arranged at one side in the reaction vessel 5; one end of the water inlet pipe 10 extends into the bottom of the reaction vessel 5 and is connected with an aerator pipe 7 of a water inlet system arranged at the bottom of the reaction vessel 5; an air inlet pipe 12 is arranged at the other side in the reaction vessel 5; one end of the air inlet pipe 12 extends into the bottom of the reaction vessel 5 and is connected with an aerator pipe 8 of an air inlet system arranged at the bottom of the reaction vessel 5; and after being connected in series, the filler 4 is suspended on an aerator hole 13 of the aerator pipe 7 of the water inlet system. Aiming at the characteristics of the China specific domestic sewage, the invention provides the domestic sewage integrated treatment unit which is economically feasible really and has the advantages of small occupied area, simple process and low operating cost.

Description

technical field [0001] The invention is designed for sewage treatment, specifically an integrated domestic sewage treatment device for treating non-traditional domestic sewage (that is, domestic sewage excluding toilet flushing water). Background technique [0002] my country's water resources are short, and the per capita water resources are only 2300m 3 , which is only 1 / 4 of the world's average level. With the rapid development of my country's economy, the continuous expansion of industrial production, and the continuous improvement of people's living standards, my country's fresh water resources are becoming increasingly tense, and some large and medium-sized cities have experienced serious water shortages. At the same time, people's pursuit of high-quality life has led to the increasing use of domestic water. [0003] The commonly used methods of domestic sewage treatment mainly include activated sludge method, biological contact oxidation method, biofilm method, CASS s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F3/10
CPCY02W10/10
Inventor 卓君臣李培军董怡华韩艳萍郭艳丽
Owner SHENYANG INST OF APPL ECOLOGY CHINESE ACAD OF SCI
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