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KR900002815B1 - Method and device for backwash drainage of rapid filter paper - Google Patents

Method and device for backwash drainage of rapid filter paper Download PDF

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KR900002815B1
KR900002815B1 KR1019870012823A KR870012823A KR900002815B1 KR 900002815 B1 KR900002815 B1 KR 900002815B1 KR 1019870012823 A KR1019870012823 A KR 1019870012823A KR 870012823 A KR870012823 A KR 870012823A KR 900002815 B1 KR900002815 B1 KR 900002815B1
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raw water
drainage
filter paper
backwash
water
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KR890007777A (en
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염병호
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염병호
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/46—Regenerating the filtering material in the filter

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  • Chemical Kinetics & Catalysis (AREA)
  • Filtration Of Liquid (AREA)

Abstract

내용 없음.No content.

Description

급속여과지의 역세척 배수 분리방법 및 장치Method and device for backwash drainage of rapid filter paper

제 1 도는 본 발명 방법에 의한 급속여과지의 구성을 보인 평면도.1 is a plan view showing the configuration of a rapid filter paper according to the method of the present invention.

제 2 도는 본 발명 방법에 의한 급속여과지의 구성을 보인 제 1 도의 A-A선 단면도.2 is a cross-sectional view taken along the line A-A of FIG. 1 showing the configuration of a rapid filter paper according to the method of the present invention.

제 3 도는 본 발명 방법에 의한 급속여과지의 운전공정을 보인 공정도.3 is a process chart showing an operation process of the rapid filter paper according to the method of the present invention.

제 4 도는 본 발명 방법에 의한 급속여과지의 운전에 따른 각종 변류의 조작공정을 보인 시퀀스타임 차트.4 is a sequence time chart showing an operation process of various currents according to the operation of a rapid filter paper according to the method of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 여과지 1a : 격벽1: filter paper 1a: partition wall

6 : 원수거 7 : 역세척수 배수통로6: raw water collection 7: backwash water drain passage

9 : 배수거 9a : 역세척수 배수거9: drainer 9a: backwash water drainer

9b : 원수배수거 13 : 원수회수번9b: Collection of enemies 13: Collection of enemies

14 : 분리벽 15 : 회수관14 separation wall 15 recovery pipe

본 발명은 급속여과지의 역세척 배수 분리방법 및 장치에 관한 것으로, 특히 급속여과지의 역세척을 위한 세척대기 공정에서 여과지내에 유입된 원수중 트라프의 상측에 위치하는 저탁도의 원수를 분리회수하기 위한 급속여과지의 역세척 배수 분리방법 및 장치에 관한 것이다.The present invention relates to a method and apparatus for separating backwash drainage of a rapid filter paper, and in particular, to separate and recover low turbidity raw water located above the trap of raw water introduced into the filter paper in the washing-waiting process for backwashing the rapid filter paper. The present invention relates to a method and apparatus for separating backwash drainage of rapid filter paper.

알려진 바와 같은 급속여과지의 운전공정은 통상, 여과공정→세척준비공정→세척대기공정→세척공정→여과준비공정등과 같은 일련의 반복 순환공정으로 이루어지며, 이와같은 종래의 운전공정중 세척 대기 공정에서는 역세척수에 의한 여과사층의 세척을 위하여 여과지내에 채워진 원수를 전량 배수시키게 된다.As is known, the operation process of a rapid filter paper usually consists of a series of repetitive circulation processes such as filtration process, washing preparation process, washing waiting process, washing process, and filtration preparation process. In the present invention, the raw water filled in the filter paper is drained for washing the filter sand layer by the backwash water.

따라서, 이와같은 종래 급속여과지의 운전방법에 의하면, 일정시간마다 주기적으로 반복 시행되는 매 세척대기 공정에서 각 단위여과지 내에 유입된 원수를 그대로 버리게 되는바, 이와같이 하여 배수되는 각 단위여과지의 원수는 침전조를 통과하는 동안 각종 약품에 의한 전처리 과정을 거쳐 침전분리된 침전수일 뿐만 아니라, 그 침전수의 배수량 또한 전체 여과지의 규모에 따라 차이는 있으나 대단위 여과지의 경우 방대한 양의 침전수를 매 세척시마다 버리지 않으면 안되는 결과를 갖게되므로, 버려지는 침전수의 침전과정에서 소요된 각종 갸품과 인위적인 노력이 함께 손실되어 막대한 경제적인 손실요인을 갖게됨은 물론, 귀중한 수자원의 낭비가 뒤따르게 되는 등의 문제점이 있었다.Therefore, according to the operation method of the conventional rapid filter paper, the raw water introduced into each unit filter paper is discarded as it is in every washing-waiting process that is repeatedly performed at regular intervals. Thus, the raw water of each unit filter paper discharged in this way is settling tank. Not only is the sediment water sedimented and separated through pretreatment with various chemicals during the passage, but the amount of sediment water is also different depending on the size of the whole filter paper. Since it has a bad result, various wastes and artificial effort lost in the sedimentation process of sedimentation water are lost together with the enormous economic loss factor, as well as the waste of precious water resources.

한편, 이와같은 막대한 손실 및 낭비를 배제하기 위하여 여과지내에 채워진 원수와 역세척수를 함께 회수하여 재사용하고자 하는 방법에 제안될 수 있으나, 이를 위하여는 버려지는 원수를 포함하는 역세척수를 함께 재처리 하기 위한 대용량의 회수조와 농축조등 필요로 하게 되므로 회수조 및 농축조등의 시설용량을 키우지 않으면 안되는 난점이 있다.On the other hand, in order to avoid such a huge loss and waste can be proposed in the method to recover and reuse the raw water and backwash water filled in the filter paper, but for this purpose to reprocess the backwash water including the raw water to be discarded together Since a large-capacity recovery tank and a concentration tank are needed, there is a difficulty in increasing the capacity of the recovery tank and the concentration tank.

본 발명은 상기와 같은 종래 급속여과지가 가지는 문제점을 감안하여 창안한 것으로, 여과지의 역세척을 위한 통상의 세척 대기공정에서 여과지내의 원수중 일부 즉, 트라프의 상측에 위치하는 원수를 회수함으로써 막대한 양의 원수를 재사용할 수 있는 급속여과지의 역세척 배수 분리방법 및 장치를 제공하기 위한 것인바, 이하 본 발명에 의한 급속여과지의 역세척수 배수 분리방법 및 장치를 첨부 도면에 의하여 상세히 설명하면 다음과 같다.The present invention was conceived in view of the problems of the conventional rapid filter paper, and by recovering a portion of the raw water in the filter paper, that is, the raw water located on the upper side of the trap, in a conventional washing standby process for backwashing the filter paper. It is to provide a method and apparatus for backwash drainage separation of rapid filter paper capable of reusing positive raw water. Hereinafter, the method and apparatus for backwash water drainage separation of rapid filter paper according to the present invention will be described in detail with reference to the accompanying drawings. same.

본 발명에 의한 역세척수 배수 분리방법에 의하면 여과공정, 세척준비공정, 세척대기공정, 세척공정 및 여과준비공정으로 이루어지는 급속여과지의 운전공정에 있어서, 상기 세척대기 공정에서 여과지내에 유입된 원수중 트라프의 상측에 채워진 저탁도의 원수를 회수하는 것이다.According to the method for separating the backwash water according to the present invention, in the operation of rapid filter paper comprising a filtration process, a washing preparation process, a washing standby process, a washing process, and a filtration preparation process, It is to recover the raw water of low turbidity filled to the top of the tank.

이와같은 원수의 회수를 위하여 본 발명은 제 1 도 및 제 2 도에 도시한 바와같이 통상의 급속여과지 즉, 일정규격을 가지는 단위여과지(1)의 여과사층(2) 상.하부에 트라프(3)와 압력실(4)이 각각 형성되고, 격벽(1a)으로 분리된 여과지(1)의 일측 상.하에는 원수유입변(5)이 구비된 원수거(6)와, 여과지(1) 중간의 역세척수 배수통로(7)와 역세척수 배수변(8)을 통하여 연통되는 배수거(9)가 중간격벽(10)의 상.하에 각기 설치되며, 그 반대측 격벽(1b)의 외측에는 상기 압력실(4)과 유통관(11)을 통하여 통되는 정수거(12) 및 역세척수 공급관(13)이 설치되는 급속여과지에 있어서, 상기 여과지(1)의 역세척수 배수통로(7)와 배수거(9)를 구획하는 일측격벽(1b)에 원수회수변(13)을 설치하여 그 원수회수변(13)이 상기 역세척수 배수변(8)의 상부 일측에 설치되게 하고, 그 원수회수변(13)을 통하여 배수통로(7)와 연통되는 배수거(9)의 중간부에는 일정높이의 분리벽(14)을 배수거(9)의 길이방향을 따라 설치하여, 배수거(9)의 내부를 고탁도의 역세척수가 배출되는 역세척수 배수거(9a)와 저탁도의 침전수가 배수되는 원수 배수거(9b)로 구획함과 아울러 상기 역세척수 배수거(9a)에는 역세척수 배수변(8)이 연통되게 하고, 그 외측원수배수거(9b)의 상측에는 원수회수변(13)이 설치된 회수관(15)의 일단이 연결되게한 것이다.In order to recover such raw water, the present invention is shown in FIG. 1 and FIG. 2 and the upper and lower filter sand layer 2 of the conventional rapid filter paper, that is, the unit filter paper 1 having a certain standard. 3) and the pressure chamber (4), respectively, and the raw water collection (6) having a raw water inlet side (5) above and below one side of the filter paper (1) separated by the partition (1a), and the filter paper (1) A drainage basin 9 communicating with the intermediate backwash water drain passage 7 and the backwash water drainage side 8 is provided above and below the intermediate partition 10, and the outer side of the opposite partition 1b is located outside the partition 1b. In a rapid filter paper in which a water purifier 12 and a backwash water supply pipe 13 communicated through a pressure chamber 4 and a distribution pipe 11 are installed, a backwash water drain passage 7 and a drainage tank of the filter paper 1 are provided. The raw water recovery side 13 is provided in one side partition 1b which divides (9), and the raw water recovery side 13 is installed in the upper one side of the said backwash water drainage side 8, and the raw water In the middle portion of the drainage basin 9 which communicates with the drainage passage 7 through the recovery side 13, a partition wall 14 having a predetermined height is provided along the longitudinal direction of the drainage basin 9. ) Is divided into a backwash water drainage basin 9a through which high turbidity backwash water is discharged and a raw water drainage basin 9b through which low turbidity sediment water is drained, and a backwash water drainage basin at the backwash water drainage basin 9a. The water side 8 is in communication with one end of the recovery pipe 15 provided with the raw water recovery side 13 is connected to the upper side of the outer water waste collection 9b.

도면중 미설명 부호 16 및 17은 유통관(11)의 정수 유출관부에 설치된 여과유량조절변 및 정수변이고, 18 및 19는 역세척수 공급관(13)에 부설된 역세변 및 역세유량 조절변이며, 20은 사수변, 가상선으로 도시된 21 및 22는 물.공기 역세척 방식이 적용될 경우에 설치되는 공기공급관 및 그 공기공급변을 각기 보인 것이다.In the drawings, reference numerals 16 and 17 are filtration flow rate control valves and purified water valves installed in the purified water outlet pipe part of the distribution pipe 11, 18 and 19 are backwashing and backwash flow rate control valves installed in the backwash water supply pipe 13, 20 is a shooter side, and 21 and 22, which are shown as imaginary lines, show air supply pipes and their air supply sides installed when water and air backwashing is applied.

이와같이된 본 발명의 급속여과지에 있어서는, 정상의 여과공정에는 원수거(6)로부터 원수유입변(5)을 통하여 공급되는 원수가 단위여과지(1)로 유입됨과 동시에 여과사층(2)을 통과하면서 여과되고, 여과된 정수는 압력실(4)로 모이게 된 후 그 일측의 유통관(11)이 설치된 여과유량 조절밸브(16) 및 정수변(17)을 통하여 정수거(12)로 유출되는 통상의 여과과정을 거치게 된다.In the rapid filtration paper of the present invention as described above, in the normal filtration process, the raw water supplied from the raw water collection 6 through the raw water inlet side 5 flows into the unit filter paper 1 and passes through the filter sand layer 2. The filtered and filtered purified water is collected in the pressure chamber (4), and then flows out to the water purifier (12) through the filtration flow rate control valve (16) and the purified water side (17) provided with a distribution pipe (11) on one side thereof. Filtration is performed.

한편, 상기와 같은 여과 작용이 진행됨에 따라, 여과사층(2)의 여과저항이 점차 증대되어 여과지(1)의 수위하 한계수위(H.W.L)에 도달하게 되면 여과사층(2)의 역세척을 필요로 하게 되는 바, 이와같은 역세척을 위하여는 제 3 도에 도시된 바와같은 세척준비 공정과 세척대기 공정 및 세척공정 그리고 재여과를 위한 통상의 여과준비 공정을 단계적으로 거치게 된다. 즉, 세척 준비공정에서는 제 4 도의 시퀀스 타임 차트에서 보는 바와같이 상기 원수유입변(5)을 폐쇄함과 아울러 정수변(17)과 여과유량조절변(16)을 닫고, 이어 세척 대기공정에서는 본 발명에 의한 원수회수변(13)을 개방하게 된다.On the other hand, as the filtration action as described above, when the filtration resistance of the filter sand layer (2) gradually increases to reach the water level limit level (HWL) of the filter paper 1, the backwashing of the filter sand layer (2) is required. In order to perform such backwashing, the washing preparation process, the washing standby process, the washing process, and the normal filtration preparation process for re-filtration as shown in FIG. 3 are performed step by step. That is, in the washing preparation process, as shown in the sequence time chart of FIG. 4, the raw water inlet side 5 is closed, and the purified water side 17 and the filtration flow rate adjusting side 16 are closed. The raw water recovery side 13 according to the invention is opened.

이와같이 하여 회수변(13)이 개방되면 만수위(H.W.L)을 유지하고 있던 단위여과지(1)내의 원수가 그 회수변(13)을 통하여 배출됨과 동시에 회수관(15)을 거쳐 분리벽(14)으로 구획된 원수배수거(9b)로 배출되는 바, 이와같이 원수배수거(9b)로 배출되는 원수는 기존의 역세척수 회수조(도면에 도시되지 않음)를 구획하여 형성한 원수 회수조등에 일시 유입 회수한 다음, 상기 단위여과지(1)의 차기 여과공정이 개시되면 곧바로 원수거(6)로 공급함으로써 대규모 시설용량을 가지는 별도의 회수조나 농축조등이 필요없이 순환공급시킬 수 있게 되는 것이다.When the recovery valve 13 is opened in this manner, the raw water in the unit filter paper 1 holding the water level HWL is discharged through the recovery valve 13, and at the same time through the recovery pipe 15 to the separation wall 14. As the raw water discharged into the raw water drainage (9b) partitioned in this way, the raw water discharged into the raw water drainage (9b) is temporarily collected into the raw water recovery tank formed by dividing the existing backwash water recovery tank (not shown). Then, as soon as the next filtration process of the unit filter paper (1) is to be supplied to the raw water collection (6) it will be able to circulate supply without the need for a separate recovery tank or concentration tank having a large capacity.

상기와 같이하여 여과지(1)내의 원수가 트라프(3)의 설치부위에 도달하여 최저수위(L.W.L)에 이르게 되면, 본 발명에 따른 원수의 회수공정이 완료되므로, 곧이어 개방된 원수회수변(13)을 닫아 막음과 아울러 역세척수 배수변(8)을 개방하고, 여과사층(2)의 표면세척용수 공급용 표세변(도면에 도시되지 않음)을 일시 개방하여 통상의 역세척을 시행하게 되면, 여과사층(2)을 역세척한 후 역세척수 배수변(8)을 통하여 배출되는 고탁도의 역세척수는 배수거(9)의 분리벽(14) 내측의 역세척수 배수거(9a)를 거쳐 배수되는 것이며, 이와같이 하여 단위여과지(1)의 역세척이 완료되면, 역세척수 배수변(8)과 역세벽(18)을 닫고 사수변(20)을 폐쇄함과 동시에 원수유입변(5)과 정수변(17) 및 여과유량조절변(16)을 개방하여 세척이 완료된 여과사층(2)를 통한 정상여과가 재개되는 것이다.As described above, when the raw water in the filter paper 1 reaches the installation site of the trap 3 and reaches the lowest water level (LWL), the recovery process of the raw water according to the present invention is completed. 13) to close and prevent the backwash water drainage side (8) and to open the surface washing water supply surface (not shown) of the filter sand layer (2) temporarily to perform normal backwashing The high turbidity backwash water discharged through the backwash water drainage side 8 after the backwashing of the filtered sand layer 2 passes through the backwash water drainage basin 9a inside the dividing wall 14 of the drainage basin 9. When the backwashing of the unit filter paper 1 is completed in this way, the backwash water drainage side 8 and the backwashing wall 18 are closed and the shooter side 20 is closed, and at the same time the raw water inlet side 5 and Normal filtration through the filtered sand layer (2) is completed by opening the purified water valve (17) and the filtration flow rate control valve (16). It will be.

이상에서는 본 발명에 따른 원수회수변(13)을 통해 배출되는 원수가 배수거(9)에 구획형성한 원수배수거(9b)를 거쳐 회수되는 것을 일예로 하였으나, 본 발명을 실시함에 있어서 배수거(9)내에 원수배수거(9b)를 분리형성하는 대신에 원수회수변(13)을 통해 배출되는 원수를 여과지(1)의 외부로 연장형성한 회수관을 거쳐 별도의 회수조등으로 직접 회수할 수도 있다.In the above, the raw water discharged through the raw water recovery side 13 according to the present invention has been recovered through the raw water collector 9b partitioned in the drainage tank 9, but in the practice of the present invention (9) Instead of separately forming the raw water drainage (9b) in the water, the raw water discharged through the raw water recovery side 13 is directly recovered to a separate recovery tank through a recovery pipe extending to the outside of the filter paper (1). You may.

상술한 바와같은 본 발명은 여과공정, 세척준비공정, 세척대기공정, 세척공정 및 여과준비공정을 가지는 금속여과지의 운전공정에 있어서, 배수거와 연통되는 역세수 배수통로의 배출단부에 원수 회수변을 설치하고 그 회수변이 설치된 회수관을 분리벽으로 구획한 저탁수 배수거에 연통되게 설치함과 아울러, 상기 세척대기 공정중에 원수 회수공정을 추가하여 한계수위에 도달한 여과지내의 원수를 원수변을 통하여 분리 회수 할 수 있게한 것이므로, 단위여과지의 매 역세척시마다 버려지던 다량의 원수 즉, 전처리된 침전수를 회수하여 재사용할 수 있게 함으로서, 회수량에 해당하는 원수의 직접적인 절약효과를 갖게됨은 물론, 그 전처리 과정에 투여된 약품을 포함하는 인위적인 노력의 낭비를 최소화하여 급속여과지의 운전방법을 보다 효율적으로 개선할 수 있게 되고 막대한 경제적 이익을 얻을 수 있게 될뿐만 아니라, 수자원의 효율적인 운용관리가 가능하게 되는 등의 효과가 있다.The present invention as described above is a raw water recovery valve in the discharge end of the backwash water drain passage in communication with the drainage in the operation process of the metal filter paper having a filtration process, the washing preparation process, the washing standby process, the washing process and the filtration preparation process And the recovery pipe with the recovery valve installed in communication with the low-drain water drainage partitioned by the dividing wall, and the raw water in the filter paper reaching the limit level by adding the raw water recovery process during the washing-waiting process. Since it is possible to separate and recover the wastewater through the unit filter paper, it is possible to recover and reuse a large amount of raw water, that is, pretreated sediment water, which has been discarded at every backwash of the unit filter paper, thereby directly saving the raw water corresponding to the recovered amount. In addition, the method of operating the rapid filter is more efficient by minimizing the waste of artificial effort including the drugs administered in the pretreatment process. In addition to being able to improve and obtain enormous economic benefits, it is possible to effectively manage and manage water resources.

Claims (2)

여과공정, 세척준비공정, 세척대기공정, 세척공정 그리고 여과준비공정으로 이루어지는 급속여과지의 운전공정에 있어서, 상기 세척대기공정에서 역세척수 배수통로와 배수거 사이에 설치된 원수배수변을 개방하여 한계수위에 도달한 여과지 내부의 원수중 트라프 상측에 채워진 원수를 역세척수 배수거의 일측에 형성한 원수배수거를 통하여 분리회수함을 특징으로 하는 급속여과지의 역세척 배수 분리방법.In the operation process of rapid filter paper which consists of filtration process, washing preparation process, washing waiting process, washing process and filtration preparation process, the raw water drainage installed between the backwash water drain passage and the drainage in the washing standby process A method for separating the backwash drainage of a quick filter, characterized in that the raw water filled in the upper part of the trap inside the filter paper reaching the wastewater is separated and recovered through a raw water drainage formed on one side of the backwashing water drainage. 격벽(1a)으로 분리된 여과지(1)의 일측 상.하에는 원수거(6)와 배수거(9)가 각기 형성되고, 그 배수거(9)와 여과지(1) 중간의 역세척수 배수통로(7)가 역세척수 배수변(8)을 통하여 연통되는 급속여과지에 있어서, 상기 격벽(1a)을 통하여 역세척수 배수통로(7)의 배수측단부로 관출시킨 회수관(15)의 일단에 원수회수변(13)을 설치하고, 상기 배수거(9)의 중간부에는 그 배수거(9)를 역세척수 배수거(9a)와 원수배수거(9b)로 분리 구획하는 분리벽(14)을 설치하여, 상기 원수회수변(13)이 설치된 회수관(15)의 배출측 단부를 원수배수거(9b)의 상단에 연통되게 구성함을 특징으로 하는 급속여과지의 역세척 배수 분리장치.On one side of the filter paper 1 separated by the partition wall 1a, a raw water collector 6 and a drainage tank 9 are respectively formed, and the backwash water drain passage between the drainage tank 9 and the filter paper 1 is formed. In the rapid filter (7) is communicated through the backwash water drainage side (8), to one end of the recovery pipe (15) which is passed through the partition (1a) to the drain side side of the backwash water drainage passage (7) A dividing wall (14) provided with a raw water recovery side (13) and separating and separating the drainage tank (9) into a backwash water drainage tank (9a) and a raw water drainage tank (9b) at an intermediate portion of the drainer; By installing, the backwash drainage separator of the quick filter, characterized in that the discharge side end of the recovery pipe (15) provided with the raw water recovery side (13) is configured to communicate with the upper end of the raw water drainage (9b).
KR1019870012823A 1987-11-13 1987-11-13 Method and device for backwash drainage of rapid filter paper Expired KR900002815B1 (en)

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