M-51 Seawage Treatment Plant [PDF]

Zitiervorschau

EC Declaration of Conformity We

IL SEUNG CO LTD supplier s name 1532-10, SONGJEONG-DONG, GANGSEO-GU, BUSAN, KOREA supplier s address Declare under our responsibility that the product

NAME SEWAGE TREATMENT PLANTS TYPE DESIGNATION ISS 25N To which this declaration relates is in conformity with the following standard s or Other normative document s MARPOL 73 78 as amended Annex

Regulation 9 1 IMO Resolution MEPC 159 55

Title and or number and date of issue of the standard s of other normative document s If applicable following the provisions of Module of conformity assessment

Module B EC Type Examination Certificate No MED MB-2005-11 Module D QS Certificate of Assessment No MED MD 1010-11 Council Directive 96 98 EC of 20 December 1996 on Marine Equipment Directive With Amendments 98 85 EC 2001 53 EC 2002 75 EC & 2008/67/EC 2009 26 EC The product has been approved by the following Notified Body Name KR HELLAS LTD. Address 41, Athinas Av., Vouliagmeni, GR-16671, Athens, Greece Identification 2198 Serial No. : ISS - 25N

656

Hull No. : 2553

NAME : D.E , HAN POSITION : PRESIDENT

BUSAN 2015-09-08 Places and date of issue

SIGNATURE

CE 402 2 2

IL SEUNG CO LTD

A4 210x297

Doc. No.

GREASE TRAP CUSTOMER

IL SEUNG

PROJECT NO.

2553

PROJECT NAME

-

MODEL

GT-20

Notes

Z

2016-01-20

ISSUED FOR AS-BUILT

REV.

DATE

DESCRIPTION

REMARK

PLAN HISTORY APPROVED BY

J.C.Kim

REVIEWED BY

D.S.Park

SAMKUN CENTURY CO.,LTD PREPARED BY

M.J.Shin

Anyone who uses the our documents without permission is subject to legal penalty. Reproduction of total or partial of this document is forbidden without any prior approval of the owner. Copyright© SAMKUN CENTURY CO.,LTD. All Rights Reserved #405 Miyul-ro, Samnangjin-eup, Miryang-si, Gyeongsangnam-do,Korea T.+82-55-338-3030, F.+82-325-0808, Contact : Sales Dep t([email protected])

Instruction Manual The Jets Sanitary System

Content

INSTALLATION Technical Information 2104 Principle & Function Vacuumarator .............................................................................1 2106 Jets Vacuumarator Mode of Operation ........................................................................2 2142 Vacuumarator Jets 15MB-D ........................................................................................3 Data Sheet Vacuum Gauge BM10063-1-0bar ......................................................................5 3120 El motor Jets 15MB-D .................................................................................................6 Operation 3106 Operation Vacuum Unit ...............................................................................................7 3105 Control Cabinet ...........................................................................................................8 41021 Vacuum Comparison .................................................................................................9 Maintenance 2166 Troubleshooting & Repair Jets 15MB-D ....................................................................10 2154 Disassembly & Assembly Instruction Jets 15MB - 15MB-D ......................................12 2180 Disassembly El motor for Jets 15MB-D .....................................................................13 Drawings 31739-029 Vacuumarator Jets 15MB/15MB-D Part Drawing ............................................14 31774-031 El motor MEZ 7AA90L02 for Jets 15MB-D Part Drawing .................................15 STD-102031-029 Macerator 15MB/15MB-D ......................................................................16 Watermark last page ..........................................................................................................1

Principle

Function

1

Mode of Operation

For details: See Data Sheet 2108.

2

Jets

Vacuumarator

pump

Technical Data:

Voltage/ Frequenzy

Part No.

3

5

Constant Vacuum System Operating

Discharge Pump

Pump used as Discharge

Note!

7

Note: Not applicable when Vacuum Unit is controlled by Sewage Treatment Plant Control Cabinet Control cabinet

General functions Constant vacuum:

Alarm

8

Functions Jets™ Vacuumarator™ pump

9

Jets 15MB-D Maintenance Job

Data Sheet No

Drawing No

Part No

Interval

Comments

10

Jets 15MB-D Problem

11

Causes

Action

Data Sheet No

Drawing No

Part No

Scheduled maintenance

WARNING:

Disassembly:

Assembly:

12

Reference to Drawing No. 31774-031.

Assembly:

13

14

020202900 036207620 029151900 037219250 036280101 029150400

036207610 029150500 037219220 029152401 029150601

10 11 12 13 14 15

16 17 18 19 20

Screw M8x20 Stationary Knife O-ring Bolt M10x170 End Flange

Plug 1/2" Screw M8x20 Nut O-ring Screw M8x35 Din 933 A4 Rotating Knife

Nut M6 Screw M6x16 Washer Suction Chamber Cover O-ring Suction Chamber

Flap Valve Complete 029151010 (15-04)

036232920 036305000 036304901 029150310 037219210 029150320

PART NO TITLE 029151001 Flap Valve Base 037302200 Flap 029151003 Plate

4 5 6 7 8 9

ITEM 1 2 3

15-06

15-18

15-17

15-03

25-18

15-02

15-01

4 1 1 4 1

2 4 1 1 1 1

2 8 8 1 1 1

30 32 33

24 25 26 27 28 29

O-ring Key Spacer Sleeve Shaft Seal Hose Clip Hose

029150391 Flange 029150901 Pressure Chamber 021217000 Plug 3/8"

037219200 021201800 029151800 038201500 034507420 034507500

DWG NO QTY ITEM PART NO TITLE 15-04-1 1 21 036150010 Split Sleeve 15-04-2 1 22 029150701 Rotor 15-04-4 1 23 029150800 Rotor Housing

1 1 1

Macerator 029150450 (15-30)

15-28 15-29 25-12

15-10 15-11

15-16

3 1 1 1 4 2

DWG NO QTY 1 15-25 1 15-07 1

EØ EØ EØ EØ

Checked

Part no.

Vacuumarator 15MB/15MB-D Drawing no. W/Flap Valve Part Drawing 31739-029

029150200

-

Replaces by Rev.

C

15.04.2008 -

AØ

30.03.2009

Date Date

EØ Design

Checked

Replaces Title

Sign. OAS OAS OAS OAS

Material

Weight

Jets AS

Dwg size:

X:X A4

Scale:

Project

ISO 2768-M

Tol.

029150902 (15-31)

Pressure Chamber Replacement Kit

Copyright - All rights reserved This information is the property of Jets AS and Mjøs Metallvarefabrikk AS. The information is confidential. No reproduction, disclosure to any third party or unauthorized use shall be made without the written consent of Jets AS or Mjøs Metallvarefabrikk AS.

N-6060 HAREID Tel. +47 70 03 91 00 Fax. +47 70 03 91 01 E.Mail [email protected] WWW.JETS.NO

®

08.10.2008 30.03.2009 01.12.2009 09.02.2010

Compensator 034307100 (15-09)

Date

Original Drawing New revision for item 20 Item 31 replaced with item 24. Flyttet pos. 21 inn i Macerator (15-30)

RevNo Revision note A B C

15

PART NO 037219240 036503400 020207800 031150250

038201710 031150270 031150240 See Table 038205910 036291500

031150230 031150210 031150220

ITEM 1 2 3 4

5 6 7 8 9 10

11 12 13

Endshield Fan Fan Cover

Part No. 029015002 029015001 029015004 029015006 029015007

Ball Bearing Shaft with rotor Terminal box Stator Ball Bearing Spacer Sleeve

TITLE Sealing Ring Screw M6x40 Split Sleeve Endshield / Bearing Housing

15-14

15-13

DWG NO

1 1 1

1 1 1 1 1 1

Part no. El Motor Stator No. 031150106 031150107 031150109 031150108 031150111

QTY 1 1 1 1

M-no M10 M11 M14 M15 M17

Voltage / Frequency 230/50, 1,5kW 230-380/50, 255-460/60 690/50 208/60 415/50 2,2kW

Weight

-

Title

Part no.

31774-031

Drawing no.

-

El Motor MEZ 7AA90L02 (Jets 15MB-D) Part Drawing

Replaces

Material

Jets AS

X:X A3

Dwg size:

Scale:

Project

ISO 2768-M

Tol.

Copyright - All rights reserved This information is the property of Jets AS andMjøs Metallvarefabrikk AS. The information is confidential. No reproduction, disclosure to any third party or unauthorized use shall be made without the written consent of Jets AS orMjøs Metallvarefabrikk AS.

N-6060 HAREID Tel. +47 70 03 91 00 Fax. +47 70 03 91 01 E.Mail [email protected] WWW.JETS.NO

®

See Table

Rev.

A

15.04.2008

AØ Replaces by

Date

08.10.2008

Date

EØ

Checked

Design

EØ

Checked

08.10.2008 OAS

Sign.

Date

Original Drawing

RevNo Revision note A

16

ITEM 1 2 3 4

PART NO 036280101 029150400 036207610 029150500

TITLE Screw M8x35 Din 933 A4 Rotating Knife Screw M8x20 Stationary Knife

15-18

15-17

DWG NO

QTY 1 1 4 1

Macerator 15MB/15MB-D Part no.

029150450

Rev.

A

15.04.2008

AØ Replaces by

Date

21.01.2009

Date

Checked EØ

Design

EØ

Checked

Date Sign. 21.01.2009 OAS

STD-102031-029

Drawing no.

Jets AS Title

Material Replaces

Dwg size:

-

Weight

Project

ISO 2768-M

Tol.

0,75 A4

Scale:

Copyright - All rights reserved This informationis the property of Jets AS and Mjøs MetallvarefabrikkAS. The informationis confidential. No reproduction, disclosure to any thirdparty or unauthorized use shall be made without the written consent of Jets AS orMjøs MetallvarefabrikkAS.

N-6060 HAREID Tel. +47 70 03 91 00 Fax. +47 70 03 91 01 E.Mail [email protected] WWW.JETS.NO

®

RevNo Revision note A Original Drawing

1

1

INSTRUCTION MANUAL Sewage Treatment Plant (New Type) MODEL : ISS-N Series

IL SEUNG CO., LTD

Published on 20150824

IL SEUNG CO., LTD

Rev.2

1

CONTENTS 1. Introduction

................................................................................................ 3

1.1 Overview ................................................................................................ 3 1.2 Warranty ................................................................................................. 3 1.3 Out of Warranty ...................................................................................... 3

2. Safety Instruction

................................................................................... 4

2.1 Safety in Operation Service .................................................................... 4 2.2 Safety in Maintenance ............................................................................ 5

3. Specification ................................................................................................ 6 3.1 Treatable Sewage

................................................................................. 6

3.2 Environmental Operating Condition ........................................................ 6 3.3 Quality Standard of Treated Sewage ...................................................... 6 3.4 Area Limitation for Sludge Discharge ..................................................... 7 3.5 Capacity of Sewage Treatment .............................................................. 7

4. Structure of Sewage Treatment Plant .......................................... 8 5. System Description ................................................................................. 9 5.1 Summary ................................................................................................ 9 5.2 Screen

.................................................................................................. 9

5.3 Fixed Media Biofilm Reactor Tank (No.1 & No.2) ..................................... 9 5.4 Sedimentation Tank .............................................................................. 10 5.5 Activated Carbon Tank

10

5.6 Sterilization Tank .................................................................................. 10

6. Installation ................................................................................................... 11 6.1 Main Body Installation .......................................................................... 11 6.2 Piping ................................................................................................... 11 6.3 Wiring ................................................................................................... 12 6.4 Installation of Vacuum Pump Combined Type (Option) ........................ 13

Published on 20150824

IL SEUNG CO., LTD

Rev.2

2

7. Operation ..................................................................................................... 14 7.1 Control Panel ........................................................................................ 14 7.2 Start-up

............................................................................................... 15

7.3 Stopping ............................................................................................... 16 7.3.1 Temporary Stop and Re-start ......................................................... 16 7.3.2 Long-term Stop and Re-start .......................................................... 17

8. Maintenance

............................................................................................. 18

8.1 Cleaning of Screen ............................................................................... 18 8.2 Discharging of Sludge in Reactors and Sedimentation Tank ............... 18 8.3 Back-flushing Procedure for Activated Carbon Tank ............................ 19 8.3.1 Back-flushing with Steam ............................................................... 20 8.3.2 Back-flushing with Hot Water (Over 70 ) ....................................... 20 8.3.3 Recommendation for Back-flushing Interval ................................... 21 8.4 Quality Check for Treated Water ............................................................ 21 8.5 Aeration Blower and Accessary ............................................................ 22 8.5.1 General .......................................................................................... 22 8.5.2 Cleaning of Aeration Blower Filter .................................................. 22 8.5.3 Structure of Aeration Blower .......................................................... 23 8.5.4 Maintenance of Aeration Blower .................................................. . 23 8.5.5 Other Check Points for Aeration Blower .. 24 8.6 Chemical Pump ................................................................................... 24 8.6.1 Structure of Chemical Pump .......................................................... 24 8.6.2 Adjustment of Chemical Injection Volume ...................................... 25 8.6.3 Handling of Sodium Hypochlorite (NaOCI) ..................................... 25 8.7 Discharge pump .................................................................................. 26 8.7.1 Structure of Discharge Pump ......................................................... 26 8.7.2 Maintenance Procedures ................................................................. 26

9. Trouble Shooting

................................................................................. 27

9.1 Aeration Blower .................................................................................... 27 9.2 Discharge Pump ................................................................................... 27 9.3 Chemical Pump .................................................................................... 28 9.4 Sedimentation Tank .............................................................................. 29 9.5 Reactor Tank ........................................................................................ 29

10. Spare Part List Published on 20150824

.................................................................................... 30

IL SEUNG CO., LTD

Rev.2

3

1. Introduction 1.1 Overview This instruction manual provides the vessel designer, engineer and the crews with the information required for the installation, operation and maintenance of ISS-N type sewage treatment plant. This instruction manual should be fully understood by the related persons to secure the safety of the workers and proper operation of the equipment.

1.2 Warranty IL SEUNG warrants the quality of the product in case when the crews performed proper operation and maintenance according to the manual, within the warranty period. If the warranty period has not been otherwise agreed, the warranty period expires 18 month after the delivery of the equipment to the shipyard or 12 months from the completion of commissioning, whichever comes first.

1.3 Out of Warranty Malfunctions or any defect of the product related to followings are excluded from the warranty. Modification of the equipment without the prior, written consent of IL SEUNG When the maintenance has not been performed according to the instruction manual. Use of not genuine or not recommended spare part Repaired by unqualified person. Damaged by the force measure

Published on 20150824

IL SEUNG CO., LTD

Rev.2

4

2. Safety Instruction 2.1 Safety in Operation Service In order to keep the design capacity of the sewage treatment, the following must be observed in proper manner. Use the toilet paper which is well resolvable in water. Do not throw any foreign substances into toilet bowl such as rubber products, cotton, cloth or vinyl. operation of sewage treatment equipment except only in emergency case, since the oxygen deficiency will cause the death of microorganisms in the sewage treatment tanks and will make loss of treating capability of the unit. The death of microorganisms will make toxic gas with stench in each processing tank and it can cause the clogging of the air supply tube. It takes one week at least to revive the microorganisms again. Do not put fingers or foreign materials in the rotating parts of the aeration blower or discharge pump. Do not use cleaning chemical for toilet such as hydrochloric acid, insecticides, deodorants etc. which may kill the microorganisms in the sewage treatment tank. When it has been used, be sure to discharge it directly overboard. After discharging, it must be cleaned with fresh water enough. Recommend to use the same type of water for cleaning, dilution of sewage treatment plant and toilet flushing used in normal operation of the vessel. Sudden change or mixture of the flushing water (like as fresh water to seawater) will have an adverse effect on the living condition of the microorganisms, since it may cause to destroy the microbial eco-system in the sewage treatment plant and in this case, re-incubation period for microorganisms may take longer than normal. Sodium hypochlorite solution is used in the sewage treatment system. Keep the storage container of this chemical be sealed to prevent leaking of the harmful gas for human. Close the top cover of the tanks and each inspection cover during the operation, to prevent the outflow of such harmful gas or stench. Make sure not to block the ventilation piping.

Published on 20150824

IL SEUNG CO., LTD

Rev.2

5

2.2 Safety in Maintenance Repair of electrical and/or mechanical equipment should be done by the authorized person who has sufficient technical knowledge and skills. glasses and rubber gloves when handling the sodium hypochlorite solution. Be careful not to inhale the gas of this chemical. In case when it touches the bear skin, wash enough with running fresh water. Confirm that ventilation system is performed well before starting of inspection inside of the tank or maintenance work, Shut off the electrical power of the control panel prior to the maintenance work of driving unit or each tank inside. During the maintenance period, put the warning tags on the outside of panel, such as "Power Off for M Do not have the welding work on the sewage treatment plant. The inside of the sewage treatment plant is coated with phenol (#3, 4 tanks) and epoxy paint (other tanks) to prevent from the corrosion. Welding heat will make damages to the coating, which may be the cause of corrosion of the tanks.

Published on 20150824

IL SEUNG CO., LTD

Rev.2

6

3. Specification 3.1 Treatable Sewage Based on the regulation of 73/78 MAPOL, the ISS-N STP is able to treat following sewages. Sewage from the Toilet Sewage from the Shower Room, Laundry and Gallery Sewage of which salinity level is less than max. 36,500 ppm

3.2 Environmental Operating Condition ISS-N Sewage Treatment Plant is designed to perform in the following environmental operating conditions. Do have prior consultation with IL SEUNG, if the operating of the plant should be done in different conditions. Temperature around the Unit (Ambient Temperature) : 2 ~ 50 Humidity around the Unit (Humidity) : 80% or Less Tilting Tolerance of the Unit (Inclination) : Max 22.5° Normal Operation, Hour/Day : 24 Hours

3.3 Quality Standard of Treated Sewage The following table shows the quality standard of treated sewage in accordance with the regulation of IMO MEPC 227(64)

Biochemical Oxygen Demand (BOD)

< 25mg/Liter

Total Suspended Solids (TSS)

Discharge Sludge

Little

Normal State

Stench of Corruption

Excessive Sludge Sewage Overload., => Discharge Sludge

Color

Smell

Published on 20150824

IL SEUNG CO., LTD

Rev.2

22

8.5 Aeration Blower and Accessary 8.5.1 General Aeration blower supplies air necessary for a maintaining of optimal living condition for the aerobic microorganisms in the reactor tank and also for a transfer of the sludge returned from the sedimentation tank, and the air volume can be adjusted by the valves installed in each tank and the pipe. Note that, as the blowing air volume of each blowing pipe is already set by the orifices before delivery, open those blowing valves fully during normal operation of the equipment.

8.5.2 Cleaning of Aeration Blower Filter Clean the aeration filter every month. .

1) Turn off the blower switch and close the valves of the air supply pipes 2) Remove the screws on the blower filter cover and take out the filter element. 3) Clean the filter with a compressed air. 4) Insert the filter in place and tighten the screws on the blower filter cover. And then open the valves of the air supply pipes. 5) Turn on the blower switch.

Published on 20150824

IL SEUNG CO., LTD

Rev.2

23

8.5.3 Structure of Aeration Blower

Fig. 5 Aeration Blower

8.5.4 Other Check Points for Aeration Blower

(1) Check whether the temperature of motor surface is higher than 80 . (2) Inject grease to the bearings periodically if the bearing is xxxxZ type. (Use No.2 Grease)

(1) Close the discharge valve of aeration blower or cock when the aeration blower is stopped. (2) For the repair or maintenance of the aeration blower, cut off the main power circuit breaker and attach a warning tag as M board.

Published on 20150824

IL SEUNG CO., LTD

Rev.2

24

8.6 Chemical Pump 8.6.1 Structure of Chemical Pump

Fig. 6 Chemical Pump

Published on 20150824

IL SEUNG CO., LTD

Rev.2

25

8.6.2 Adjustment of Chemical Injection Volume By spinning of Dial , set the chemical injection volume and then, tighten the fixing screw . The chemical injection volume can be adjusted from 0% to 100% with the Dial

Dial of chemical pump is set in the factory before delivery. Therefore, do not adjust the dial without right knowledge on it.

Fig. 7 Chemical Pump

8.6.3 Handling of Sodium hypochlorite (NaOCl) (1) It is lemon yellow colored oxidative fluid. Be careful not to contact with bear skin, cloth and etc. (2) When it contacted with the eyes, nose or mouth, wash immediately with clean water and go to doctor. (3) For the handling of this fluid, wear rubber glove, rubber boots and etc. (4) Do not inhale the gas and work in the place with the good air ventilation. Specification of Sodium hypochlorite (NaOCl) ; Effective Chlorine 12% Aqueous Solution

Published on 20150824

IL SEUNG CO., LTD

Rev.2

26

8.7 Discharge Pump 8.7.1 Structure of Discharge Pump

Fig. 8 Discharge Pump

8.7.2 Maintenance Procedures Check the direction of pump rotation (Looked from behind : Clockwise) Air in the flow of fluid shall be removed frequently for the prevention of pump cavitation. (Open the suction and discharge valves of pump and fill with the water to remove air until the air does not come out from the air vent cock in the pump body.) Keep the discharge and suction valves of spare pump that is not used be closed Avoid idling of the pump. In case of sudden variation of the electric currency and pressure discharge rate, abnormal temperature rise of the motor, vibration, and abnormal sound the pump shall be stopped immediately to determine the causes. For a long-term stop and repair of the pump, the suction and discharge valve of the pump should be closed. To prepare for the risk of freezing in the winter, drain the water in the equipment completely by opening of the drain valve provided in the pump bottom. This pump operates automatically in normal condition, therefore, when any trouble occurs, do maintenance or repair after changing of the AUTO/MANU S/W to MANU position and cut off the main power switch. During operation, check the amount of leakage from mechanical seal to decide the replacement Tolerance 3cc/H r( 1 Drop/min) Replace if there is continuous dropping. Normal value of the discharging pressure of pump : 0 ~ 3.6 kg/cm

The pressure can be changed depending on the S.W.L and installation level of sewage treatment plant. Published on 20150824

IL SEUNG CO., LTD

Rev.2

27

9. Trouble Shooting 9.1 Aeration Blower Troubles

Probable Causes

Remedies

Motor doesn t move. Noise

. Power supply is cut. . Impeller is pressed . Bearing Problem

. Check the power supply. . Check for the gap between impeller and cover . Replace the bearing or impeller.

When starting, circuit breaker drops.

. Electrical Leakage in Coil . Overload

. Check the insulation of coil . Clean the air filter

Insufficient Air Supply

. Wrong Rotating Direction. . Dirty Impeller or Deformed Wing

. Fix the rotating direction. . Clean impeller or replace.

. Too High Air Pressure. Noise(Blooper Sound) . Contamination of Silencer. . Bearing Problem

.Check clogging of discharge valves .Clean the silencer or replace .Replace the bearing

Pressure is higher than the green mark range.

. Clogging of Air Supply Line.

. Check air valves are open . Check the orifice on the line is clogged.

Air Leaking

. Gasket trouble

Replace the gasket.

9.2 Discharge Pump Troubles

Probable Causes

Remedies

Pump does not work.

. Cable disconnected or not linked well . Pump Stuck . Weak Voltage.

. Check connection or replace the cable. . Disassembly and cleaning . Supply rated voltage..

Discharge pressure . Weak Voltage drops low or discharging . Impeller clogged or rate is not enough damaged.

. Supply the rated voltage. . Check any piping clogged or damaged. . Check and clean the impeller or replace

Published on 20150824

IL SEUNG CO., LTD

Rev.2

28

9.3 Chemical Pump Troubles Air Inflow

Probable Causes Joint and sealing area leaking

Pump works but no chemical injection

Air Flow Out Chemical tank is empty Strainer is clogged or not come up. ball seat is damaged Fluid does

Not Sufficient Chemical Discharging

Pump does not working well.

Remedies Check O-ring and adjust the tightening Refill the chemical and remove air Clean strainer and replace the ball seat

Damage of Ball and Joint

Replace

Spring or diaphragm damaged

Replace

Motor

Fuse is disconnected

does not

Motor Insulation Defect

Check the cause and replace the Fuse Repair or Replace

rotate

Magnet Switch Defect

Repair or Replace

Damage of Deceleration Equip.

Replace

Damage of Eccentricity bearing

Replace

Gear Worn-out

Repair or Replace

Clogging Inside

Check and Repair

Not Enough Grease at Gear

Replenish Grease

Worn-out of Eccentricity Bearing

Repair or Replace

Motor rotates

Abnormal Noise or Heat

Published on 20150824

IL SEUNG CO., LTD

Rev.2

29

9.4 Sedimentation Tank Problem

Reason

Check Point

Remedies

. Sludge flocked in locally. . Stench . Sludge Emerging

Excessive sludge or corruption of suspended solids

. Sludge in the Tank . Sludge Corruption . Interval of Sludge Discharging

Discharge excessive sludge overboard or to bilge tank and sewage storage tank

9.5 Reactor Tank Problem

Formation of

Reason

Check Point

Due to overload of the reactor tank, F/M ratio imbalance

Inflow volume of sewage kg/ day

High Temperature Rise (Above 38 )

Check the temp. of the inflowing sewage

Bad Aeration.

Check the dissolved oxygen

the white, thick wave shape bubbles on the surface of the

Rapid Increase of pH

Formation of the glossy,

Lowering the temp. or put in the dilution water Maintain the dissolved oxygen in no.1 reactor tank to 3.5~4.0 mg/

Check pH of inflowing water Check any toxic s ubstance by smell(stench) or color in the inflowing water.

Control pH of inflowing water

Due to inflow of chemicals such as surfactant or drugs

Check the inflow of chemicals

Stop inflowing of the chemicals

Entering of Toxic Substances

Check desorption of microorganisms from the media in the reactor tank

Reduce the inflowing quantity and put the dilution water into the reactor tank.

Inflow volume of sewage kg/ day

Reduce the possible rapid load change by calculating the inflow load

water in the reactor tank.

Remedy Reduce the case of rapid load change by calculating the inflow load.

Entering of Toxic Substances

Reduce the inflowing quantity and put the dilution water into the reactor tank.

yellowish brown color bubbles on the surface of the water in

Due to overload of the reactor tank, F/M ratio imbalance

the reactor tank.

Published on 20150824

IL SEUNG CO., LTD

Rev.2

30

10. Spare Part List

The specification of the items marked with according to the maker provision. Published on 20150824

*

IL SEUNG CO., LTD

above can be changed

Rev.2