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Integrated sewage treatment equipment

A sewage treatment equipment, sewage technology, applied in the directions of oxidized water/sewage treatment, water/sewage treatment, biological water/sewage treatment, etc., can solve the problems of high investment and operation cost, small algae and difficult to separate, and secondary pollution of water quality. , to achieve the effect of promoting algae reproduction, improving disease resistance and adaptability, and improving utilization rate

Active Publication Date: 2020-05-19
无锡市远洲环保科技有限公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In recent years, various sewage treatment processes have been continuously developed. The activated sludge process for the secondary treatment of urban sewage has become the mainstream process due to its own advantages. However, the traditional urban sewage is mainly for the purpose of removing carbon source pollutants. Nitrogen, The removal of nutrients such as phosphorus is negligible, and the treated effluent will still cause environmental problems such as eutrophication after being discharged into the water body. Although the tertiary treatment can solve the above problems, it is difficult to promote on a large scale due to high investment and operating costs.
[0004] At present, the effective method for removing nitrogen and phosphorus in sewage is algae technology, which uses planktonic algae, chemical agents and microbial agents to effectively remove nitrogen and phosphorus in sewage, but the addition of various chemical components will cause secondary pollution of water quality , and the algae are small and difficult to separate, and the recycling rate is low
Therefore, some scholars have proposed to improve the method of cultivating algae biofilm with carriers, which refers to immobilizing algae on the surface of the carrier to reproduce and form biofilm. The conditions are not easy to control, and the simple use of algae biofilm for sewage treatment is not effective, so it is necessary to find a comprehensive sewage treatment equipment that can play a high-efficiency and high-quality role in domestic sewage.

Method used

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  • Integrated sewage treatment equipment
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as figure 1 As shown, an integrated sewage treatment equipment includes: a water storage tank 1 for containing sewage. There is a water inlet 13 on one side of the water inlet 13, which is lower than the coarse grid plate 12, and is used to introduce water flow from bottom to top to intercept large solid debris under the coarse grid plate 12 to form a sedimentation area, and from the conical bucket 11 The slag outlet 14 is discharged, and the side of the water storage tank 1 is provided with a water outlet 15. The position of the water outlet 15 is higher than the coarse grid plate 12, and the fine grid plate 16 is arranged at the port of the water outlet 15 to intercept small particles in the sewage. sundries.

[0036] Such as figure 1 As shown, the coagulation and sedimentation device 2 connected to the water outlet of the water storage tank 1, the coagulation and sedimentation device 2 includes a coagulation tank 21 made of non-magnetic austenitic stainless st...

Embodiment 2

[0053] This embodiment is basically the same as Example 1, and the difference points out that the preparation method of the magnetic coagulant of the present embodiment is: according to weight components, 25 parts of chitosan powder are dissolved in 150 parts of concentration of 0.1mol / L In the silicic acid solution, to obtain chitosan acidic solution, get 6 parts of ferric oxide powder whose particle size is 15nm, 0.4 part of citric acid as dispersant, 2 parts of glutaraldehyde, 17 parts of silicone and mix to obtain Ferric iron oily dispersion, at 40°C in a water bath, gradually add the ferric iron tetroxide oily dispersion into the chitosan acidic solution dropwise with a pipette gun, and mechanically stir evenly at the same time, as the chitosan cross Under the action of glutaraldehyde of the coupling agent, it becomes magnetic chitosan gel beads, then the gel beads are transferred to saturated sodium carbonate solution and soaked for 35min, filtered, and rinsed with deioni...

Embodiment 3

[0057] This embodiment is basically the same as Embodiment 1, the difference being that there is no plate-and-frame fiber membrane module 33 in the water storage tank 31 in the pre-demulsification device 3, but directly passes into ozone, and the ozone consumption is 0.25L / ( m 2 ·min), the running time is 25min.

[0058] The main water quality indicators of the effluent were measured, and the results were: CODCr=42-50mg / L, BOD5=4-8mg / L, SS=0mg / L, ammonia nitrogen=12-38mg / L, TN=8-15mg / L, TP< 3mg / L, the removal efficiencies are: CODCr≥94%, BOD5≥97%, ammonia nitrogen≥89%, SS=100%, TN≥93%, TP≥90%.

[0059] Comparing Example 3 and Example 1, it can be found that the CODCr, BOD5, ammonia nitrogen, and TN of Example 3 have all decreased, which may be due to the failure to achieve the desired effect in the pre-emulsification stage, resulting in subsequent algae biofilm cycle components 4 The burden is heavy, and the water quality declines.

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Abstract

The invention discloses integrated sewage treatment equipment. The equipment comprises a water storage tank, a coagulating sedimentation device, a pre-demulsification device, an algae biological membrane circulation assembly, a tubular membrane filtration assembly and a purified water tank, wherein a plate frame fiber membrane assembly is arranged in the pre-demulsification device and is used forintroducing ozone, the ozone and oil stains in the sewage are enriched on the surface of a fiber membrane under ultrasonic vibration, and the contact rate of the ozone and the oil stains in the sewageis increased, so that the demulsification efficiency is improved, and the operation burden of the subsequent algae biological membrane circulation assembly is reduced. The algae biological membrane circulation assembly is formed by connecting a plurality of algae biological membrane columns end to end in series, the algae biological membrane columns are filled with foaming polylactic acid carriers loaded with alkaline pectinase, algae propagation can be promoted, the disease resistance and adaptability of the algae can be improved, and the sewage treatment capacity of the algae biological membrane circulation assembly is improved. In a word, the integrated sewage treatment equipment disclosed by the invention is excellent in oil removal, nitrogen removal and phosphorus removal effects.

Description

technical field [0001] The invention specifically belongs to the technical field of sewage treatment, and in particular relates to an integrated sewage treatment equipment. Background technique [0002] With the improvement of people's living standards, great changes have taken place in the way of life. There is also more and more urban domestic sewage, and the direct discharge of the sewage and wastewater into the environment not only brings serious pollution to the ecological environment such as water and air, but also poses a non-negligible threat to human health and the survival of animals and plants. [0003] In recent years, various sewage treatment processes have been continuously developed. The activated sludge process for the secondary treatment of urban sewage has become the mainstream process due to its own advantages. However, the traditional urban sewage is mainly for the purpose of removing carbon source pollutants. Nitrogen, The removal of nutrients such as p...

Claims

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Application Information

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IPC IPC(8): C02F9/14
CPCC02F9/00C02F1/001C02F2001/007C02F1/5281C02F1/488C02F1/36C02F1/78C02F1/44C02F1/40C02F3/34C02F3/325C02F1/444C02F1/66C02F3/02C02F1/50C02F2303/04C02F1/5236C02F1/5263C02F1/56
Inventor 刘斌钟成洪孙飞
Owner 无锡市远洲环保科技有限公司
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