KR20200005393A

KR20200005393A - Technology of efficiency enhancement of Rotating Biological Contactor during winter

Info

Publication number: KR20200005393A
Application number: KR1020180079075A
Authority: KR
Inventors: 김미숙
Original assignee: 주식회사 대한엔지니어링
Priority date: 2018-07-07
Filing date: 2018-07-07
Publication date: 2020-01-15

Abstract

Although a conventional rotating circular plate contact tank is operating in a south area where the temperature in winter is relatively warm due to the problem of a temperature decrease in winter, the tank is still dealing with a temperature decrease by installing a lid on the top due to a temperature decrease in winter. However, a rotating circular plate contact disc rotates in a state in which two thirds of the same is exposed to atmosphere, microorganisms attached to the disc are deteriorated in activity or killed due to a decrease in temperature to be eliminated from the disc and thus, normal treatment efficiency is difficult to be achieved. The present invention relates to a rotating circular plate contact method (RBC) which is a treatment process of sewage and wastewater. Due to a temperature decrease during the winter of the RBC process, microorganisms attached and grown on the rotating circular plate contact disc in summer are killed and thus, sewage and wastewater are not treated. Therefore, the present invention relates to technology for maintaining the water temperature of the rotating circular plate contact tank in winter to be at 13°C or more at which microorganisms can grow. More specifically, the technology of the present invention induces denitrification and maintains the optimum temperature in winter by installing a heating device to introduce some of inflow raw water to the rotating circular plate contact tank and internally returning some of discharged water of the rotating circular plate contact tank to a front end in order to remove nitrogen and maintain the temperature.

Description

Technology of efficiency enhancement of Rotating Biological Contactor during winter

본 발명은 하·폐수의 처리공정인 회전원판접촉법(RBC)에 관한 것으로서, RBC공정의 동절기에 온도의 저하로 인하여 하절기에 회전원판접촉 디스크에 부착 성장한 미생물이 사멸되어 하·폐수가 처리되지 않고 있다. 따라서 겨울철에 회전원판접촉조의 수온이 미생물이 성장할 수 있는 온도인 13℃ 이상 유지시켜 주는 기술에 관한 것이다. The present invention relates to a rotating disk contact method (RBC), a process for treating sewage and wastewater, wherein microorganisms attached to a rotating disk contact disk in the summer are killed due to a decrease in temperature during the winter of the RBC process, and the sewage and wastewater are not treated. have. Therefore, it relates to a technology that maintains the water temperature of the rotating disk contact tank in the winter 13 ℃ or more temperature that can grow microorganisms.

구체적으로 본 발명은 유입 원수중 일부를 가온장치를 설치하여 회전원판접촉조에 유입시키고 질소제거와 온도유지를 위해 회전원판접촉조 방류수중 일부를 전단으로 내부반송시킴으로서 탈질산화 유도 및 동절기 적정온도를 유지하도록 하는 기술이다. Specifically, the present invention installs a part of the inlet raw water into the rotary disk contact tank by installing a heating device, and by transporting a part of the rotator disk contact tank discharge water to the front end in order to remove nitrogen and maintain the temperature to induce denitrification and maintain the appropriate temperature in winter It is a technique to make.

종래의 회전원판접촉조는 동절기 온도저하 문제로 말미암아 겨울철 온도가 비교적 따뜻한 남쪽 지방을 대상으로 설치 운영 중에 있었으나, 동절기 온도 저하로 상부에 뚜껑을 설치하여 온도저하에 대처하고 있다. 그러나 회전원판 접촉 디스크가 2/3가 대기 중에 노출되어 회전됨으로 디스크에 부착되어있던 미생물이 온도저하로 활성이 저하되거나 사멸로인해 디스크에서 탈락어 동절기에 정상적인 처리효율달성이 어렵다. Conventional rotating disc contact tank was installed in the southern region where the winter temperature is relatively warm in winter due to the problem of temperature decrease in winter, but it is coping with the temperature drop by installing a cap on the upper part due to the decrease in winter temperature. However, as the rotating disc contact disk rotates with two-thirds of exposure to the atmosphere, microorganisms attached to the disk are deteriorated due to a decrease in temperature or are killed, and it is difficult to achieve normal treatment efficiency during the winter due to death.

기존 설치된 회전원판접촉법 전·후단에 동절기 효율저하를 방지하기 위한 추가 고도처리시설을 설치하여 초기 설치비용의 증가와 유지관리비 증가의 요인으로 작용하고 있다.An additional advanced treatment facility is installed in front of and behind the existing rotating disk contact method to prevent the winter efficiency from dropping, thus increasing the initial installation cost and maintenance cost.

따라서 동절기에 안정적인 운영을 위해서는 온도 유지가 필수적이다. 본 발명은 동절기에 일부의 원수 온도를 올리는 가온조 및 온도를 균등하게 섞어주는 균등조를 기존 회전원판법 전단에 설치하여 13℃ 이상의 원수가 회전원판접촉조에 유입되도록 고안한 것이다. Therefore, maintaining temperature is essential for stable operation in winter. The present invention is designed to allow the raw water to be introduced into the rotating disk contact tank 13 ℃ or more by installing a heating tank and evenly mixing the temperature evenly mixing the temperature of the raw water temperature in the winter season.

본 발명에 관련되는 선행기술로서 대한민국 특허출원번호 제2001-0003577호, 제2002-0027398호 및 제 2001-0003578호 등이 있다.Prior arts related to the present invention include Korean Patent Application Nos. 2001-0003577, 2002-0027398, 2001-0003578, and the like. 상기와 같은 종래기술에 의하면, 회전원판법을 사용하여 하·폐수의 유기물질, 질소 및 인제거하기 위해 회전원판접촉조에 반송, 회전원판이 수중에 100% 침적시키고, 담체 등을 넣어 오염물질 처리효율 향상을 꾀하고 있고, 온도저하에 대처하기 위해 회전원판접촉조 상부에 뚜껑을 설치하는 것 등이 주를 이루고 있다.According to the prior art as described above, in order to remove organic matter, nitrogen and phosphorus in the sewage and waste water by using the rotary disk method, conveyed to the rotary disk contact bath, the rotary disk is deposited 100% in water, and the carrier is put into the pollutant treatment. The main purpose is to improve efficiency, and to install a lid on the upper portion of the rotating disc contact tank to cope with the temperature decrease. 이러한 기술은 모두 동절기에 적정 온도 저하로 말미암아 운전이 되지 않고 있는 실정이다All of these technologies are not operating due to the decrease in temperature in winter.

본 발명은 회전원판접촉조의 동절기 문제점인 회전원판접촉조의 동결문제 해결, 원판에 미생물 탈착방지 및 미생물의 사멸방지을 방지하여 하·폐수처리공정이 정상 가동되도록 유입 원수를 가온하여 회전원판접촉공정이 미생물성장에 방해가 되지 않는 최적의 온도를 유지하도록 하는 가온시설 그 목적이 있다. The present invention is to solve the freezing problem of the rotating disk contact tank, which is a winter problem of the rotating disk contact tank, to prevent the desorption of microorganisms on the disk and to prevent the killing of microorganisms by heating the incoming raw water so that the sewage and wastewater treatment process is normal, the rotating disk contact process is a microorganism The purpose of the heating system is to maintain an optimum temperature that does not interfere with growth.

본 발명은 상기와 같은 문제점을 해결하기 위한 것으로서, 회전원판접촉공정 전단에 유입되는 하·폐수의 일부를 가온하는 가온 시설(전기히터 혹은 보일러), 가온반응조 및 원수 균등조를 신설하고, 일정온도 유지 및 처리효율의 증대를 위해 내부반송을 추가하여 동절기에 회전원판접촉조에 유입되는 하·폐수의 온도가 미생물의 성장에 저해 받지 않는 일정온도 이상으로 유입되도록 하여 동절기 회전원판접촉조의 문제점을 해결하고자 하는 것을 그 목적으로 한다.The present invention is to solve the above problems, newly established a heating facility (electric heater or boiler), a heating reaction tank and raw water equalization tank to heat a part of the waste water flowing into the front end of the rotating disc contact process, and a constant temperature In order to solve the problem of the winter rotating disk contacting tank by adding an internal conveying to increase the maintenance and processing efficiency, the temperature of sewage and wastewater flowing into the rotating disk contacting tank in winter flows above a certain temperature which is not impeded by the growth of microorganisms. It is for that purpose.

현재 하·폐수처리를 위해 설치되어 있는 회전원판접촉공정이 처해 있는 동절기 미생물 사멸에 의한 처리효율저하로 인한 방류수수질기준이 초과되는 문제를 해결하고 회전원판접촉공정이 안정적인 효율을 얻어 방류수수질기준이내가 되도록 하여 방류수계보전에 도움이 되도록 하며, 동절기 온도저하에따른 효율저하를 대비하여 회전원판접촉공정 전·후단에 추가공정을 설치하지 안토록It solves the problem that the discharge water quality standard is exceeded due to the decrease of treatment efficiency by the killing of microorganisms during the winter when the rotating disc contact process currently installed for sewage and waste water treatment is solved. It is helpful for preservation of discharge water system, and additional process should not be installed before and after the rotating disc contact process in order to reduce efficiency due to winter temperature decrease.

도 1은 일반적인 회전원판접촉 공정과정을 나타낸 공정도.
도 2는 본 발명에 적용된 회전원판접촉공정의 동절기 효율향상 공정도.1 is a process chart showing a general rotating disc contact process.
Figure 2 is a winter efficiency improvement process diagram of the rotating disc contact process applied to the present invention.

본 발명을 첨부된 도면을 참조하여 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 2에서 회전원판법의 동절기 효율 향상 기술의 공정구성을 나타내고 있다.In FIG. 2, the process structure of the winter efficiency improvement technique of the rotating disc method is shown.

회전원판법의 가온을 위해 세가지를 추가하였다. 첫째 가온조(18)에 원수의 일부를 유입시켜 히터나 보일러를 통해 온도를 높인 후 원수와 균등조(6)함께 회전원판접촉조(22)에 유입시킨다. 둘째 회전원판접촉조의 상부에는 뚜껑(8)을 덮어 차가운 대기가 유입되지 않도록 한다. 셋째, 온도 보존과 고도처리효율을 향상시키기 위해 반송(26)을 실시한다.Three additions were made to warm the rotating disc method. First, a part of the raw water is introduced into the heating tank 18 to increase the temperature through the heater or the boiler, and then the raw water and the equalization tank 6 are introduced into the rotating disc contacting tank 22. Second, cover the lid (8) in the upper portion of the rotary disk contact tank to prevent cold air from entering. Third, conveyance 26 is carried out in order to improve the temperature storage and the high processing efficiency.

2 하,폐수 조정조
4 최초침전지
6 온도 균등조
8 회전원판조 뚜껑
10 회전원판
12 최종침전지
14 최초침전지 반송
16 원수 가온조로 유입
18 가온조
20 가온조 원수 온도 균등조로 이송
22 회전원판접촉조
24 최종침전지 슬러지 반송
26 회전접촉조 후단에서 전단으로 온도 유지 및 추가 처리를 위해 하,폐수 이송
28 폐슬러지
30 유출
32 가온균등조내 교반시설2 Sewage and wastewater adjustment tank
4 initial settler
6 temperature equalization tank
8 rotating disc lid
10 rotating disc
12 final settler
14 First settler return
16 Inflow into raw water heater
18 warm bath
20 Warming bath Transfer to raw water temperature equalizer
22 Rotary disc contact tank
24 Final Settler Sludge Return
26 Transfer of sewage and wastewater to maintain temperature from the rear end of rotary contact tank to further processing
28 Waste Sludge
30 outflow
32 Stirring Facility

Claims

Process and apparatus for maintaining the water temperature of 13 ℃ or higher even in winter by heating raw water flowing in front of rotating disk contacting tank in the rotating disk contacting method in order to efficiently operate sewage and wastewater in winter.

Heat the raw water and feed it into the rotating disk contacting tank so that the temperature and the properties of the raw water are equalized before and after the microbial process minimizes the adverse effects in the biological process.

Process of returning 100 ~ 300% from the rear end of the rotating disk contacting tank to the front end to maintain the proper water temperature in winter

Top cover of the rotating disk contacting tank is completely sealed to prevent the outside cold air from entering the rotating disk contacting tank.